Ashraf Uz Zaman

Senior forskare vid Antennsystem

Ashraf Uz Zaman är docent i forskargruppen Antennsystem.

Källa: chalmers.se
Image of Ashraf Uz Zaman

Visar 213 publikationer

2024

Development of a High-Efficiency Circularly Polarized Ka-Band Satcom Antenna Utilizing Ridge-loaded U-shaped Radiator

Raha Roosefid, Sadegh Mansouri Moghaddam, Lukas Nystrom et al
IEEE Antennas and Wireless Propagation Letters. Vol. In Press
Artikel i vetenskaplig tidskrift
2024

A Comparative Study of Decoupling Techniques for Waveguide Slot Array Antennas

Mu Fang, Jian Yang, Ashraf Uz Zaman
18th European Conference on Antennas and Propagation, EuCAP 2024
Paper i proceeding
2024

Analysis of Radiating Transverse Slot Unit Cell and Reflection Cancellation at D-Band

Usman Shehryar, Jian Yang, Ashraf Uz Zaman
18th European Conference on Antennas and Propagation, EuCAP 2024
Paper i proceeding
2024

Compact Circularly Polarized Antenna based on Gapwaveguide for SATCOM Applications

Raha Roosefid, Jian Yang, Ashraf Uz Zaman
18th European Conference on Antennas and Propagation, EuCAP 2024
Paper i proceeding
2024

A 50 dBi E-Band Dual-reflector Antenna for 5G Backhauling with Auto-beam-tracking Function

Enlin Wang, Sam Agneessens, Oskar Talcoth et al
IEEE Transactions on Antennas and Propagation. Vol. 72 (6), p. 4874-4887
Artikel i vetenskaplig tidskrift
2024

Antenna and Mechanical Co-Design for Auto-Beam-Tracking in Backhaul Systems

Enlin Wang, Anders Wennergren, Henrik Stalrud et al
18th European Conference on Antennas and Propagation, EuCAP 2024
Paper i proceeding
2024

Millimeter wave Wideband and Low-loss Compact Power Divider Based on Gap Waveguide: For Use in Wideband Antenna Array System

Arefeh Kalantari Khandani, A. Farahbakhsh, D. Zarifi et al
IEEE Access. Vol. 12, p. 116478-116488
Artikel i vetenskaplig tidskrift
2024

Low-cost Coaxial Slot Array Antenna for E-band Automotive Corner Radar Applications Based on Gap Waveguide MLW Technology

Juan Luis Albadalejo Lijarcio, Abbas Vosoogh, Carlo Bencivenni et al
18th European Conference on Antennas and Propagation, EuCAP 2024
Paper i proceeding
2024

W-Band Filtering Antenna Based on a Slot Array and Stacked Coupled Resonators Using Gap Waveguide Technology

David Santiago, Mu Fang, Ashraf Uz Zaman et al
IEEE Antennas and Wireless Propagation Letters. Vol. 23 (8), p. 2546-2550
Artikel i vetenskaplig tidskrift
2024

Low-Cost Center-Fed Slot Array Based on Gap Waveguide MLW Coaxial Line Technology for E-band Automotive Radar

Juan Luis Albadalejo Lijarcio, Abbas Vosoogh, Carlo Bencivenni et al
IEEE Transactions on Antennas and Propagation. Vol. 72 (7), p. 5674-5681
Artikel i vetenskaplig tidskrift
2024

D-Band High Gain Planer Slot Array Antenna using Gap Waveguide Technology

A. Farahbakhsh, D. Zarifi, Ashraf Uz Zaman
IEEE Transactions on Antennas and Propagation. Vol. In Press
Artikel i vetenskaplig tidskrift
2024

1-Dimensional Wide Scanning Gap Waveguide Based Slot Array Antenna using Decoupling Technique for 100 GHz Applications

Mu Fang, Jian Yang, Thomas Emanuelsson et al
IEEE Transactions on Antennas and Propagation. Vol. 72 (4), p. 3438-3450
Artikel i vetenskaplig tidskrift
2024

77-GHz Fully Polarimetric Antenna System With Compact Circularly Polarized Slots in Gap Waveguide for Automotive Radar

Zhaorui Zang, Qiannan Ren, Ashraf Uz Zaman et al
IEEE Transactions on Antennas and Propagation. Vol. 72 (7), p. 5578-5588
Artikel i vetenskaplig tidskrift
2024

High-efficiency single-layer corporate-feed gap waveguide based circularly polarized antenna array with compact size

Liangyu Sun, Ashraf Uz Zaman, Binyun Yan et al
AEU - International Journal of Electronics and Communications. Vol. 183
Artikel i vetenskaplig tidskrift
2024

An Automotive Polarimetric Radar Sensor With Circular Polarization Based on Gapwaveguide Technology

Qiannan Ren, Olof Eriksson, Prateek Thalya et al
IEEE Transactions on Microwave Theory and Techniques. Vol. 72 (6), p. 3759-3771
Artikel i vetenskaplig tidskrift
2024

Wideband High Efficiency Slot Array Antenna Based on Gap Waveguide Single-Layer Feeding Network

Rahman Askarzadeh, A. Farahbakhsh, D. Zarifi et al
IEEE Antennas and Wireless Propagation Letters. Vol. In Press
Artikel i vetenskaplig tidskrift
2024

Wideband High-Efficiency Single-Layer Ridge Gap Waveguide Based Circular Polarized Magneto-Electric Dipole Antenna Array

Liangyu Sun, Ashraf Uz Zaman, Binyun Yan et al
IEEE Transactions on Antennas and Propagation. Vol. 72 (8), p. 6735-6740
Artikel i vetenskaplig tidskrift
2023

E-Band Low-Loss Reconfigurable Phase Shifters

Enlin Wang, Sam Agneessens, Ashraf Uz Zaman et al
IEEE Microwave and Wireless Technology Letters. Vol. 33 (7), p. 999-1002
Artikel i vetenskaplig tidskrift
2023

Design of a Gap Waveguide Based Unit Cell for 1-D Beam Scanning Application at W-band

Mu Fang, Jian Yang, Ashraf Uz Zaman
17th European Conference on Antennas and Propagation, EuCAP 2023
Paper i proceeding
2023

High Gain Linearly Polarized 1D Beam Scanning Array Antenna based on Gap Waveguide Technology

Viktor Mattsson, Sebastian Ekman, Ashraf Uz Zaman et al
17th European Conference on Antennas and Propagation, EuCAP 2023
Paper i proceeding
2023

A Gap Waveguide-Based D-Band Slot Array Antenna with Interdigital Feed Network

D. Zarifi, A. Farahbakhsh, Ashraf Uz Zaman
IEEE Transactions on Antennas and Propagation. Vol. 71 (9), p. 7124-7131
Artikel i vetenskaplig tidskrift
2023

Pattern Distributed Pins in Half-mode Groove Gap Waveguide for Stable Performance and Low Cost

Enlin Wang, Ashraf Uz Zaman, Zehong Yan et al
17th European Conference on Antennas and Propagation, EuCAP 2023
Paper i proceeding
2023

Design of a dual-CP gap waveguide fed aperture array antenna

Davoud Zarifi, Ali Farahbakhsh, Ashraf Uz Zaman
IET Microwaves, Antennas and Propagation. Vol. 17 (9), p. 723-730
Artikel i vetenskaplig tidskrift
2023

Single Layer Dual Circularly Polarized Series-fed Gap Waveguide Based Slot Array for 77 GHz Automotive Radar

Zhaorui Zang, Ashraf Uz Zaman, Jian Yang
IEEE Transactions on Antennas and Propagation. Vol. 71 (5), p. 3775-3784
Artikel i vetenskaplig tidskrift
2023

Low-Cost Ball-Pen Gap Waveguide With Nearly Zero Friction for Sliding Movements

Enlin Wang, Ashraf Uz Zaman, Zehong Yan et al
IEEE MICROWAVE AND WIRELESS TECHNOLOGY LETTERS. Vol. 33 (11), p. 1580-1583
Artikel i vetenskaplig tidskrift
2023

Single Layer Antenna based on Gap Waveguide Technology with Dual-Circular Polarization for 60-GHz Band

A. Farahbakhsh, D. Zarifi, Ashraf Uz Zaman
17th European Conference on Antennas and Propagation, EuCAP 2023
Paper i proceeding
2023

Gapwaveguide Automotive Imaging Radar Antenna with Launcher in Package Technology

Qiannan Ren, Carlo Bencivenni, Giorgio Carluccio et al
IEEE Access. Vol. 11, p. 37483-37493
Artikel i vetenskaplig tidskrift
2023

Substrate-Less Vertical Chip-to-Waveguide Transition for W-Band Array Antenna Integration

Juan Luis Albadalejo Lijarcio, Abbas Vosoogh, Vessen Vassilev et al
2023 17TH EUROPEAN CONFERENCE ON ANTENNAS AND PROPAGATION, EUCAP
Paper i proceeding
2023

A Multi Beam Slot Array Antenna Fed by Contactless Multi-Layered 4x8 Buttler Matrix Using Gap Waveguide Technology for 60GHz Fixed Wireless Access Applications

Seyed Ali Razavi, Ashraf Uz Zaman
2023 17TH EUROPEAN CONFERENCE ON ANTENNAS AND PROPAGATION, EUCAP
Paper i proceeding
2023

Applications of Contactless Characteristics of Gap Waveguides in Mechanical Reconfigurability

Enlin Wang, Carlo Bencivenni, Sam Agneessens et al
2023 IEEE International Symposium on Antennas and Propagation, ISAP 2023
Paper i proceeding
2023

A 2 × 2 Ka-Band Wideband Circularly Polarized Sub-Array Antenna Based on U-shaped Slots and Gap Waveguide Technology

Raha Roosefid, Sadegh Mansouri Moghaddam, Lukas Nystrom et al
2023 IEEE International Symposium on Antennas and Propagation, ISAP 2023
Paper i proceeding
2023

Multilayer Dry Film Photoresist Fabrication of a Robust >100 GHz Gap Waveguide Slot Array Antenna

Sadia Farjana, Esperanza Alfonso Alos, Per Lundgren et al
IEEE Access. Vol. 11, p. 43630-43638
Artikel i vetenskaplig tidskrift
2023

A Dual-Circularly Polarized Gap Waveguide-Based Linear Array Antenna for 60 GHz-Band

D. Zarifi, A. Farahbakhsh, Ashraf Uz Zaman
17th European Conference on Antennas and Propagation, EuCAP 2023
Paper i proceeding
2023

A Multi Beam Slot Array Antenna Fed by Contactless Multi-Layered 4×8 Buttler Matrix Using Gap Waveguide Technology for 60GHz Fixed Wireless Access Applications

Seyed Ali Razavi, Ashraf Uz Zaman
17th European Conference on Antennas and Propagation, EuCAP 2023
Paper i proceeding
2023

A Millimeter-Wave Six-Port Junction Based on Ridge Gap Waveguide

D. Zarifi, A. Farahbakhsh, Ashraf Uz Zaman
IEEE Access. Vol. 11 , p. 68699-68705
Artikel i vetenskaplig tidskrift
2022

An E-band Reconfigurable Phase Shifter Based on Gap Waveguide

Enlin Wang, Jian Yang, Ashraf Uz Zaman
2022 16th European Conference on Antennas and Propagation, EuCAP 2022
Paper i proceeding
2022

Dual-Polarized Highly Folded Bowtie Antenna with Slotted Self-Grounded Structure for Sub-6 GHz 5G Applications

Mohammad Alibakhshikenari, Bal Singh Virdee, Chan Hwang See et al
IEEE Transactions on Antennas and Propagation. Vol. 70 (4), p. 3028-3033
Artikel i vetenskaplig tidskrift
2022

Using a Conical Horn as Compact Antenna Test Range Feed in Millimetre Bands

Sergiy Pivnenko, Ashraf Uz Zaman, Marianna Ivashina
2022 16th European Conference on Antennas and Propagation, EuCAP 2022
Paper i proceeding
2022

Design of Dual Circularly Polarized Inclined Slot Pair Based on Stepped-Height Ridge Gap Waveguide with Series Excitation

Zhaorui Zang, Ashraf Uz Zaman, Jian Yang
2022 16th European Conference on Antennas and Propagation, EuCAP 2022
Paper i proceeding
2022

Novel Integration Techniques for Gap Waveguides and MMICs Suitable for Multilayer Waveguide Applications

Qiannan Ren, Ashraf Uz Zaman, Jian Yang et al
IEEE Transactions on Microwave Theory and Techniques. Vol. 70 (9), p. 4120-4128
Artikel i vetenskaplig tidskrift
2022

A Single Layer Dual-Polarization Array Antenna Based on Parallel Plate Gap Waveguide

A. Farahbakhsh, D. Zarifi, Ashraf Uz Zaman
2022 16th European Conference on Antennas and Propagation, EuCAP 2022
Paper i proceeding
2022

Micromachined Wideband Ridge Gap Waveguide Power Divider at 220-325 GHz

Sadia Farjana, Ashraf Uz Zaman, Per Lundgran et al
IEEE Access. Vol. 10, p. 27432-27439
Artikel i vetenskaplig tidskrift
2022

Single Layer Dual Circularly Polarized Antenna Array Based on Ridge Gap Waveguide for 77 GHz Automotive Radar

Zhaorui Zang, Ashraf Uz Zaman, Jian Yang
IEEE Transactions on Antennas and Propagation. Vol. 70 (7), p. 5977-5982
Artikel i vetenskaplig tidskrift
2022

Dual-Circularly Polarized Array Antenna Based on Gap Waveguide Utilizing Double-grooved Circular Waveguide Polarizer

Qiannan Ren, Ashraf Uz Zaman, Jian Yang
IEEE Transactions on Antennas and Propagation. Vol. 70 (11), p. 10436-10444
Artikel i vetenskaplig tidskrift
2022

A 60 GHz-Band 4x4 Butler Matrix Based on Ridge Gap Waveguide

Davood Zarifi, Ali Farahbakhsh, Ashraf Uz Zaman
2022 16TH EUROPEAN CONFERENCE ON ANTENNAS AND PROPAGATION (EUCAP)
Paper i proceeding
2022

Monopulse Feeding Network Based on New Gap Waveguide Planar Magic-Tees

Enlin Wang, Tianling Zhang, Ashraf Uz Zaman et al
2022 International Symposium on Antennas and Propagation, ISAP 2022, p. 101-102
Paper i proceeding
2022

A 60 GHz-Band 4×4 Butler Matrix Based on Ridge Gap Waveguide

D. Zarifi, A. Farahbakhsh, Ashraf Uz Zaman
2022 16th European Conference on Antennas and Propagation, EuCAP 2022
Paper i proceeding
2022

A Compact Gap-Waveguide Dual-Polarized Ka-Band Feed for 50dBi Reflector Antennas With Tracking Function

Enlin Wang, Tianling Zhang, Ashraf Uz Zaman et al
IEEE Access. Vol. 10, p. 91622-91630
Artikel i vetenskaplig tidskrift
2022

Design and development of broadband gap waveguide-based 0-dB couplers for Ka-band applications

Davoud Zarifi, Ali Farahbakhsh, Ashraf Uz Zaman
IET Microwaves, Antennas and Propagation. Vol. 16 (11), p. 718-724
Artikel i vetenskaplig tidskrift
2022

High Gain and Fixed Broadside radiation at 140GHz Band by a Leaky Wave Slotted Waveguide

Seyed Ali Razavi, Ashraf Uz Zaman
2022 16th European Conference on Antennas and Propagation, EuCAP 2022
Paper i proceeding
2021

Low Loss Gap Waveguide Transmission line and Transitions at 220-320 GHz Using Dry Film Micromachining

Sadia Farjana, Mohammadamir Ghaderi, Ashraf Uz Zaman et al
IEEE Transactions on Components, Packaging and Manufacturing Technology. Vol. 11 (11), p. 2012-2021
Artikel i vetenskaplig tidskrift
2021

Micromachined Ridge Gap Waveguide Transmission Line and Transition at 220-310 GHz

Sadia Farjana, Per Lundgren, Peter Enoksson et al
2021 IEEE International Symposium on Antennas and Propagation and North American Radio Science Meeting, APS/URSI 2021 - Proceedings, p. 1297-1298
Paper i proceeding
2021

Ultra-Wideband Millimeter-wave Planar Array Antenna with an Upside-down Structure of Printed Ridge Gap Waveguide for Stable Performance and High Antenna Efficiency

Tianling Zhang, Lei Chen, Ashraf Uz Zaman et al
IEEE Antennas and Wireless Propagation Letters. Vol. 20 (9), p. 1721-1725
Artikel i vetenskaplig tidskrift
2021

A Dual Circularly Polarized Array Antenna for Ka-Band Satellite Communications

Qiannan Ren, Ashraf Uz Zaman, Jian Yang
2021 International Symposium on Antennas and Propagation, ISAP 2021
Paper i proceeding
2021

Millimeter-Wave Vertical Transitions between Ridge Gap Waveguides and Microstrip Lines for Integration of MMIC with Slot Array

Qiannan Ren, Ashraf Uz Zaman, Jian Yang et al
15th European Conference on Antennas and Propagation, EuCAP 2021
Paper i proceeding
2021

Compact Low-Loss Chip-to-Waveguide and Chip-to-Chip Packaging Concept Using EBG Structures

Ahmed Adel Hassona, Vessen Vassilev, Ashraf Uz Zaman et al
IEEE Microwave and Wireless Components Letters. Vol. 31 (1), p. 9-12
Artikel i vetenskaplig tidskrift
2021

3D Printed Periodic Structures for RF Packaging of Integrated Array Module at sub-6GHz Band

Ashraf Uz Zaman, Marianna Ivashina
2021 International Symposium on Antennas and Propagation, ISAP 2021
Paper i proceeding
2021

Single Layer Dual Circularly Polarized Antenna Elements for Automotive Radar at 77 GHz

Zhaorui Zang, Ashraf Uz Zaman, Jian Yang et al
15th European Conference on Antennas and Propagation, EuCAP 2021
Paper i proceeding
2021

An unequal power divider based on ridge gap waveguide with an inserted conductor plate

Yu Quan, Jian Yang, Hao Wang et al
Microwave and Optical Technology Letters. Vol. 63 (2), p. 443-449
Artikel i vetenskaplig tidskrift
2021

Realizing a 140 GHz Gap Waveguide–Based Array Antenna by Low-Cost Injection Molding and Micromachining

Sadia Farjana, Mohammadamir Ghaderi, Ashraf Uz Zaman et al
Journal of Infrared, Millimeter, and Terahertz Waves. Vol. 42 (8), p. 893-914
Artikel i vetenskaplig tidskrift
2021

High-performance UWB mmWave smart bowtie array antenna technology for 5G access and backhauling systems

Jian Yang, Sadegh Mansouri Moghaddam, Tianling Zhang et al
2020 International Symposium on Antennas and Propagation, ISAP 2020, p. 243-244
Paper i proceeding
2021

Millimeter-Wave Ultrawideband Circularly Polarized Planar Array Antenna Using Bold-C Spiral Elements with Concept of Tightly Coupled Array

Tianling Zhang, Lei Chen, Sadegh Mansouri Moghaddam et al
IEEE Transactions on Antennas and Propagation. Vol. 69 (4), p. 2013-2022
Artikel i vetenskaplig tidskrift
2020

D-band waveguide-to-microstrip transition implemented in eWLB packaging technology

Ahmed Adel Hassona, Vessen Vassilev, Zhongxia Simon He et al
Electronics Letters. Vol. 56 (4), p. 187-+
Artikel i vetenskaplig tidskrift
2020

Packaging Technique of Highly Integrated Circuits Based on EBG Structure for +100 GHz Applications

Ahmed Adel Hassona, Vessen Vassilev, Ashraf Uz Zaman et al
14th European Conference on Antennas and Propagation, EuCAP 2020
Paper i proceeding
2020

Ultra-wideband linearly polarised planar bowtie array antenna with feeding network using dielectric-based inverted microstrip gap waveguide

Tianling Zhang, Lei Chen, Sadegh Mansouri Moghaddam et al
IET Microwaves, Antennas and Propagation. Vol. 14 (6), p. 485-490
Artikel i vetenskaplig tidskrift
2020

Fully-Planar Ultrawideband Tightly-Coupled Array (FPU-TCA) with Integrated Feed for Wide-Scanning Millimeter-Wave Applications

Sadegh Mansouri Moghaddam, Jian Yang, Ashraf Uz Zaman
IEEE Transactions on Antennas and Propagation. Vol. 68 (9), p. 6591-6601
Artikel i vetenskaplig tidskrift
2020

Oil, water, and ice detection on road surfaces with a millimeter-wave radiometer

Olivier Auriacombe, Vessen Vassilev, Ashraf Uz Zaman
Proceedings of SPIE - The International Society for Optical Engineering. Vol. 11533
Paper i proceeding
2020

A V-Band Low Sidelobe Cavity-Backed Slot Array Antenna Based on Gap Waveguide

Davoud Zarifi, Ali Farahbakhsh, Ashraf Uz Zaman
14th European Conference on Antennas and Propagation, EuCAP 2020
Paper i proceeding
2020

Ka band microstrip fed slot array antenna with PMC packaging

Carlos Sánchez-Cabello, Luis Fernando Herrán, Ashraf Uz Zaman et al
IET Microwaves, Antennas and Propagation. Vol. 14 (14), p. 1837-1845
Artikel i vetenskaplig tidskrift
2020

A Series-fed High-Gain Gap Waveguide Planar Array Antenna Fed by Quasi-TEM Wave

Tianling Zhang, Lei Chen, Ashraf Uz Zaman et al
14th European Conference on Antennas and Propagation, EuCAP 2020
Paper i proceeding
2020

A Compact Double-Layer Groove Gap Waveguide Power Divider with High Isolation

Enlin Wang, Tianling Zhang, Lei Chen et al
14th European Conference on Antennas and Propagation, EuCAP 2020
Paper i proceeding
2020

A wideband 3-dB directional coupler in GGW for use in V-Band communication systems

Marzieh Nasri, D. Zarifi, Ashraf Uz Zaman
IEEE Access. Vol. 8, p. 17819-17823
Artikel i vetenskaplig tidskrift
2020

Nongalvanic Generic Packaging Solution Demonstrated in a Fully Integrated D-Band Receiver

Ahmed Adel Hassona, Vessen Vassilev, Ashraf Uz Zaman et al
IEEE Transactions on Terahertz Science and Technology. Vol. 10 (3), p. 321-330
Artikel i vetenskaplig tidskrift
2020

Groove Gap Waveguide Filter Based on Horizontally Polarized Resonators for V-Band Applications

Morteza Rezaee, Ashraf Uz Zaman
IEEE Transactions on Microwave Theory and Techniques. Vol. 68 (7), p. 2601-2609
Artikel i vetenskaplig tidskrift
2020

Road Surface Characterization Using a Radiometer at 100 GHz

Olivier Auriacombe, Vessen Vassilev, Ashraf Uz Zaman
International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz. Vol. 2020-November, p. 136-137
Paper i proceeding
2020

A Method of Reducing Mutual Coupling for a Finite Array

Lei Chen, Tianling Zhang, Ashraf Uz Zaman et al
14th European Conference on Antennas and Propagation, EuCAP 2020
Paper i proceeding
2020

A Simple Asymmetric Orthomode Transducer Based on Groove Gap Waveguide

Yu Quan, Jian Yang, Hao Wang et al
IEEE Microwave and Wireless Components Letters. Vol. 30 (10), p. 953-956
Artikel i vetenskaplig tidskrift
2020

Planar H-Plane Horn Antenna Based on Groove Gap Waveguide Technology

Mahsa Hamedani, Homayoon Oraizi, Amrollah Amini et al
IEEE Antennas and Wireless Propagation Letters. Vol. 19 (2), p. 302-306
Artikel i vetenskaplig tidskrift
2019

Two Types of High Gain Slot Array Antennas based on Ridge Gap Waveguide in the D-Band

Jinlin Liu, Ashraf Uz Zaman, Jian Yang
Proceedings of the 2019 9th IEEE-APS Topical Conference on Antennas and Propagation in Wireless Communications, APWC 2019. Vol. September 2019, p. 75-78
Paper i proceeding
2019

An Unequal Power Divider Based on Ridge Gap Waveguide

Yu Quan, Jian Yang, Hao Wang et al
13th European Conference on Antennas and Propagation, EuCAP 2019
Paper i proceeding
2019

D-Band Slot Array Antenna Using Combined Ridge and Groove Gap Waveguide Feeding Network

A. Farahbakhsh, D. Zarifi, Ashraf Uz Zaman
13th European Conference on Antennas and Propagation, EuCAP 2019
Paper i proceeding
2019

A Slot Array Antenna with Single-Layered Corporate-Feed based on Ridge Gap Waveguide in the 60-GHz Band

Jinlin Liu, Abbas Vosoogh, Ashraf Uz Zaman et al
IEEE Transactions on Antennas and Propagation. Vol. 67 (3), p. 1650-1658
Artikel i vetenskaplig tidskrift
2019

Wideband Sub-6 GHz Self-Grounded Bow-Tie Antenna with New Feeding Mechanism for 5G Communication Systems

Mohammad Alibakhshikenari, Sadegh Mansouri Moghaddam, Ashraf Uz Zaman et al
13th European Conference on Antennas and Propagation, EuCAP 2019. Vol. March 2019
Paper i proceeding
2019

Overview of High Frequency Electronics Integration Concepts for Gap waveguide based High Gain Slot Antenna Array

Ashraf Uz Zaman, Abbas Vosoogh, Jian Yang et al
2019 IEEE International Conference on Microwaves, Antennas, Communications and Electronic Systems, COMCAS 2019
Paper i proceeding
2019

5G mmWave Beam Steering Antenna Development and Testing

Carlo Bencivenni, Magnus Gustafsson, Abolfazl Haddadi et al
13th European Conference on Antennas and Propagation, EuCAP 2019
Paper i proceeding
2019

A Method of Reducing Mutual Coupling Using an Extra Coupling Path

Lei Chen, Tianling Zhang, Sadegh Mansouri Moghaddam et al
13th European Conference on Antennas and Propagation, EuCAP 2019
Paper i proceeding
2019

A Low Sidelobe Double-Layer Corporate-Feed Array Antenna by Inverted Microstrip Gap Waveguide at 28 GHz

Jinlin Liu, Ashraf Uz Zaman, Jian Yang
2019 International Symposium on Antennas and Propagation, ISAP 2019 - Proceedings
Paper i proceeding
2019

An E-band Compact Frequency Division Duplex Radio Front-end Based on Gap Waveguide Technology

Abbas Vosoogh, M. S. Sorkherizi, Vessen Vassilev et al
13th European Conference on Antennas and Propagation, EuCAP 2019
Paper i proceeding
2019

Ultrawide Band Tightly-Coupled Aperture Magneto-Electric Dipole Array over 20 - 40 GHz

Sadegh Mansouri Moghaddam, Ashraf Uz Zaman, Jian Yang et al
13th European Conference on Antennas and Propagation, EuCAP 2019
Paper i proceeding
2019

Polymer based 140 GHz Planar Gap Waveguide Array Antenna for Line of Sight (LOS) MIMO Backhaul Links

Sadia Farjana, Sofia Rahiminejad, Ashraf Uz Zaman et al
IMWS-AMP 2019 - 2019 IEEE MTT-S International Microwave Workshop Series on Advanced Materials and Processes for RF and THz Applications. Vol. July 2918, p. 148-150
Paper i proceeding
2019

A Low Sidelobe Double-Layer Corporate-Feed Array Antenna by Inverted Micro strip Gap Waveguide at 28 GHz

Jinlin Liu, Ashraf Uz Zaman, Jian Yang
2019 INTERNATIONAL SYMPOSIUM ON ANTENNAS AND PROPAGATION (ISAP 2019)
Paper i proceeding
2019

Design of a 38 dBi Slot Array on Gap Waveguide at 140 GHz

Jinlin Liu, Ashraf Uz Zaman, Jian Yang
2019 Cross Strait Quad-Regional Radio Science and Wireless Technology Conference, CSQRWC 2019 - Proceedings
Paper i proceeding
2019

Compact Integrated Full-Duplex Gap Waveguide-Based Radio Front End For Multi-Gbit/s Point-to-Point Backhaul Links at E-Band

Abbas Vosoogh, Milad Sharifi Sorkherizi, Vessen Vassilev et al
IEEE Transactions on Microwave Theory and Techniques. Vol. 67 (9), p. 3783-3797
Artikel i vetenskaplig tidskrift
2019

Design and Fabrication of Wideband Millimeter-Wave Directional Couplers with Different Coupling Factors Based on Gap Waveguide Technology

D. Zarifi, A. Farahbakhsh, Ashraf Uz Zaman
IEEE Access. Vol. 7, p. 88822-88829
Artikel i vetenskaplig tidskrift
2019

Gap Waveguide Technology

Eva Rajo, Z. Sipus, Ashraf Uz Zaman
Surface Electromagnetics: With Applications in Antenna, Microwave, and Optical Engineering, p. 198-230
Kapitel i bok
2019

8 x 8 Ka-Band Dual-Polarized Array Antenna Based on Gap Waveguide Technology

Miguel Ferrando-Rocher, Jose Ignacio Herranz-Herruzo, Alejandro Valero-Nogueira et al
IEEE Transactions on Antennas and Propagation. Vol. 67 (7), p. 4579-4588
Artikel i vetenskaplig tidskrift
2019

Wideband Dual-polarized Array Antenna on Dielectric-based Inverted Microstrip Gap Waveguide

Tianling Zhang, Lei Chen, Sadegh Mansouri Moghaddam et al
13th European Conference on Antennas and Propagation, EuCAP 2019
Paper i proceeding
2019

A D-Band Center-Feed Linear Slot Array Antenna Based on Gap Waveguide

D. Zarifi, A. Farahbakhsh, Ashraf Uz Zaman
13th European Conference on Antennas and Propagation, EuCAP 2019
Paper i proceeding
2019

Ultra-wideband Circularly Polarized Planar Array Antenna Using Single-Arm-Spiral Elements and Dielectric-based IMGW

Tianling Zhang, Lei Chen, Sadegh Mansouri Moghaddam et al
2019 International Symposium on Antennas and Propagation, ISAP 2019 - Proceedings
Paper i proceeding
2018

Capacity Gains of (3 × 3)×(3 × 3) MIMO Fixed Links with Planar Aperiodic Sparse Arrays in Pure-LOS Channels

Andres Alayon Glazunov, Navid Amani, Ashraf Uz Zaman et al
Proceedings of the 2018 8th IEEE-APS Topical Conference on Antennas and Propagation in Wireless Communications, APWC 2018, p. 734-736
Paper i proceeding
2018

A V-band branch guide 3-dB Coupler based on gap waveguide for use in antenna array

D. Zarifi, A. Farahbakhsh, Ashraf Uz Zaman
IET Conference Publications. Vol. 2018 (CP741)
Paper i proceeding
2018

Millimeter wave Microstrip Fed Slot Array Antenna with PMC Packaging for Future 5G Systems

Ashraf Uz Zaman, Eva Rajo-Iglesias
2018 IEEE ANTENNAS AND PROPAGATION SOCIETY INTERNATIONAL SYMPOSIUM ON ANTENNAS AND PROPAGATION & USNC/URSI NATIONAL RADIO SCIENCE MEETING, p. 1513-1514
Paper i proceeding
2018

Millimeter wave high gain antenna based on gap waveguide technology

Ashraf Uz Zaman, Thomas Emanuelsson
2017 IEEE 6th Asia-Pacific Conference on Antennas and Propagation, APCAP 2017 - Proceeding, p. 1-3
Paper i proceeding
2018

A Planar Single-Polarized Ultra-Wideband Antenna Element for Millimeter-Wave Phased Array

Sadegh Mansouri Moghaddam, Jian Yang, Andres Alayon Glazunov et al
2018 INTERNATIONAL SYMPOSIUM ON ANTENNAS AND PROPAGATION (ISAP), p. 797-798
Paper i proceeding
2018

Gap waveguide technology for millimeter-wave antenna systems

Eva Rajo, M. Ferrando-Rocher, Ashraf Uz Zaman
IEEE Communications Magazine. Vol. 56 (7), p. 14-20
Artikel i vetenskaplig tidskrift
2018

A wideband high-gain and high-efficiency slot array antenna based on groove gap waveguide

A. Farahbakhsh, D. Zarifi, Ashraf Uz Zaman
IET Conference Publications. Vol. 2018 (CP741)
Paper i proceeding
2018

PCB Based UWB mm-Wave Smart Capped Bowtie Array for 5G Communication Systems

Jian Yang, Sadegh Mansouri Moghaddam, Ashraf Uz Zaman et al
IEEE Antennas and Propagation Society International Symposium, p. 631-632
Paper i proceeding
2018

A mmWave Wideband Slot Array Antenna Based on Ridge Gap Waveguide With 30% Bandwidth

Ali Farahbakhsh, Davood Zarifi, Ashraf Uz Zaman
IEEE Transactions on Antennas and Propagation. Vol. 66 (2), p. 1008-1013
Artikel i vetenskaplig tidskrift
2018

An Integrated Ka-Band Diplexer-Antenna Array Module Based on Gap Waveguide Technology With Simple Mechanical Assembly and No Electrical Contact Requirements

Abbas Vosoogh, Milad Sharifi Sorkherizi, Ashraf Uz Zaman et al
IEEE Transactions on Microwave Theory and Techniques. Vol. 66 (2), p. 962-972
Artikel i vetenskaplig tidskrift
2018

Simple and Broadband Transition Between Rectangular Waveguide and Groove Gap Waveguide for mm-Wave Applications

Abbas Vosoogh, Ashraf Uz Zaman, Jian Yang
IEEE Antennas and Propagation Society International Symposium, p. 1101-1102
Paper i proceeding
2018

Design of A Wideband Array Antenna Prototype with Gap Waveguide for W-Band Wireless Links

Jinlin Liu, Ashraf Uz Zaman, Jian Yang
IET Conference Publications. Vol. 2018 (CP741)
Paper i proceeding
2018

A compact phase shifter in groove gap waveguide for millimeter-wave applications

Seyed Ali Razavi, Ashraf Uz Zaman
IET Conference Publications. Vol. 2018 (CP741)
Paper i proceeding
2018

A New Calibration Kit for VNA Measurements of General Microstrip Line Devices Using Gap Waveguide Technology

Julius Petersson, Ashraf Uz Zaman, Jian Yang
ISAP 2018 - 2018 International Symposium on Antennas and Propagation
Paper i proceeding
2018

Bandwidth Investigation on Half-Height Pin in Ridge Gap Waveguide

Fangfang Fan, Jian Yang, Vessen Vassilev et al
IEEE Transactions on Antennas and Propagation. Vol. 66 (1), p. 100-108
Artikel i vetenskaplig tidskrift
2018

W-Band Low-Profile Monopulse Slot Array Antenna Based on Gap Waveguide Corporate-Feed Network

Abbas Vosoogh, Abolfazl Haddadi, Ashraf Uz Zaman et al
IEEE Transactions on Antennas and Propagation. Vol. 66 (12), p. 6997-7009
Artikel i vetenskaplig tidskrift
2018

Towards Integrated Active Antennas for 5G mm-wave Applications at Gapwaves

Carlo Bencivenni, Ashraf Uz Zaman, Abolfazl Haddadi et al
2018 IEEE Antennas and Propagation Society International Symposium and USNC/URSI National Radio Science Meeting, APSURSI 2018 - Proceedings, p. 415-416
Paper i proceeding
2018

Study of Dielectric Loss and Conductor Loss among Microstrip, covered Microstrip and inverted Microstrip Gap Waveguide utilizing variational Method in Millimeter Waves

Jinlin Liu, Jian Yang, Ashraf Uz Zaman
ISAP 2018 - 2018 International Symposium on Antennas and Propagation
Paper i proceeding
2018

Design of Wideband Slot Array Antenna by Groove Gap Waveguide in Millimeter Waves

Jinlin Liu, Ashraf Uz Zaman, Jian Yang
2018 IEEE-APS Topical Conference on Antennas and Propagation in Wireless Communications (APWC)
Paper i proceeding
2018

Analytical Solutions to Characteristic Impedance and Losses of Inverted Microstrip Gap Waveguide Based on Variational Method

Jinlin Liu, Jian Yang, Ashraf Uz Zaman
IEEE Transactions on Antennas and Propagation. Vol. 66 (12), p. 7049-7057
Artikel i vetenskaplig tidskrift
2018

Capacitive-coupled groove gap waveguide filter

Morteza Rezaee, Ashraf Uz Zaman
IET Conference Publications. Vol. 2018 (CP741)
Paper i proceeding
2018

140 GHz Planar Gap Waveguide Array Antenna for Line of Sight (LOS) MIMO Backhaul Links

Ashraf Uz Zaman, Sofia Rahiminejad, Thomas Eriksson et al
IET Conference Publications. Vol. 2018 (CP741)
Paper i proceeding
2018

Gap waveguide based 1-D steerable beam antenna concept for millimeter-wave 5G application

Ashraf Uz Zaman, Thomas Emanuelsson
IET Conference Publications. Vol. 2018 (CP741)
Paper i proceeding
2018

Zero-Gap Waveguide: A Parallel Plate Waveguide With Flexible Mechanical Assembly for mm-Wave Antenna Applications

Abbas Vosoogh, Ashraf Uz Zaman, Vessen Vassilev et al
IEEE Transactions on Components, Packaging and Manufacturing Technology. Vol. 8 (12), p. 2052-2059
Artikel i vetenskaplig tidskrift
2017

Design and Fabrication of a High Gain 60-GHz Cavity-backed Slot Antenna Array fed by Inverted Microstrip Gap Waveguide

Jinlin Liu, Abbas Vosoogh, Ashraf Uz Zaman et al
IEEE Transactions on Antennas and Propagation. Vol. 65 (4), p. 2117-2122
Artikel i vetenskaplig tidskrift
2017

A High-Gain High-Efficiency Corporate-Fed Slot Array Antenna directly Fed by Ridge Gap Waveguide at 60-GHz

Jinlin Liu, Abbas Vosoogh, Ashraf Uz Zaman et al
2017 International Symposium on Antennas and Propagation (ISAP). Vol. 2017-January
Paper i proceeding
2017

Pick and place assembly technique for fabrication of groove gapwaveguide resonator

Sadia Farjana, Ashraf Uz Zaman, Peter Enoksson
Journal of Physics: Conference Series. Vol. 922 (1)
Paper i proceeding
2017

An E-band Antenna-diplexer Compact Integrated Solution Based on Gap Waveguide Technology

Abbas Vosoogh, Milad Sharifi Sorkherizi, Ashraf Uz Zaman et al
2017 INTERNATIONAL SYMPOSIUM ON ANTENNAS AND PROPAGATION (ISAP 2017). Vol. 2017-January
Paper i proceeding
2017

A dual-polarized slotted-waveguide antenna based on gap waveguide technology

M. Ferrando-Rocher, Ashraf Uz Zaman, Jian Yang et al
2017 11th European Conference on Antennas and Propagation, EUCAP 2017, p. 3726-3727
Paper i proceeding
2017

Novel Low-Loss Millimeter- Wave Transition From Waveguide-to-Microstrip Line Suitable for MMIC Integration and Packaging

Ashraf Uz Zaman, Vessen Vassilev, Herbert Zirath et al
IEEE Microwave and Wireless Components Letters. Vol. 27 (12), p. 1098-1100
Artikel i vetenskaplig tidskrift
2017

E-band 3-D metal printed wideband planar horn array antenna

Abbas Vosoogh, Per-Simon Kildal, Vessen Vassilev et al
21st International Symposium on Antennas and Propagation, ISAP 2016, Okinawa, Japan, 24-28 October 2016, p. 304-305
Paper i proceeding
2017

Novel Millimeter Wave Transition From Microstrip Line to Groove Gap Waveguide for MMIC Packaging and Antenna Integration

Uttam Nandi, Ashraf Uz Zaman, Abbas Vosoogh et al
IEEE Microwave and Wireless Components Letters. Vol. 27 (8), p. 691-693
Artikel i vetenskaplig tidskrift
2017

Wideband cavity-backed slot subarray with gap waveguide feed-network for D-band applications

Abbas Vosoogh, Ashraf Uz Zaman, Vessen Vassilev
2017 11th European Conference on Antennas and Propagation, EUCAP 2017, p. 207-209
Paper i proceeding
2017

60-GHz Groove Gap Waveguide Based Wideband H-Plane Power Dividers and Transitions: For Use in High-Gain Slot Array Antenna

A. Farahbakhsh, D. Zarifi, Ashraf Uz Zaman
IEEE Transactions on Microwave Theory and Techniques. Vol. 65 (11), p. 4111-4121
Artikel i vetenskaplig tidskrift
2017

Diplexer integration into a Ka-band high-gain gap waveguide corporate-fed slot array antenna

Abbas Vosoogh, Milad Sharifi Sorkherizi, Ashraf Uz Zaman et al
2017 IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting. Vol. 2017-January
Paper i proceeding
2017

Design of a double layer cavity backed slot array antenna in gap waveguide technology

Peiye Liu, Ashraf Uz Zaman, Per-Simon Kildal
21st International Symposium on Antennas and Propagation, ISAP 2016, Okinawa, Japan, 24-28 October 2016, p. 682-683
Paper i proceeding
2017

Ridge gap waveguide slot antenna array with 30% bandwidth for 60-GHz applications

A. Farahbakhsh, D. Zarifi, Ashraf Uz Zaman
2017 11th European Conference on Antennas and Propagation, EUCAP 2017, p. 3050-3052
Paper i proceeding
2017

Realisation of carved and iris groove gap waveguide filter and E-plane diplexer for V-band radio link application

M. Rezaee, Ashraf Uz Zaman
IET Microwaves, Antennas and Propagation. Vol. 11 (15), p. 2109-2115
Artikel i vetenskaplig tidskrift
2017

Slot Antenna Array Unit Cell Directly Fed by Inverted Microstrip Gap Waveguide

Jinlin Liu, Abbas Vosoogh, Ashraf Uz Zaman et al
2017 International Symposium on Antennas and Propagation (ISAP). Vol. 2017-January
Paper i proceeding
2017

A Ridge Gap Waveguide fed apperture-coupled microstrip antenna array for 60 GHz applications

D. Zarifi, A. Farahbakhsh, Ashraf Uz Zaman
2017 11th European Conference on Antennas and Propagation, EUCAP 2017, p. 953-955
Paper i proceeding
2017

Millimeter wave wideband high gain antenna based on gap waveguide technology

Ashraf Uz Zaman, Andres Alayon Glazunov
2017 32nd General Assembly and Scientific Symposium of the International Union of Radio Science, URSI GASS 2017. Vol. 2017-January, p. 1-2
Paper i proceeding
2017

Millimeter wave contactless microstrip-gap waveguide transition suitable for integration of RF MMIC with gap waveguide array antenna

Uttam Nandi, Ashraf Uz Zaman, Abbas Vosoogh et al
2017 11th European Conference on Antennas and Propagation, EUCAP 2017, p. 1682-1684
Paper i proceeding
2017

A GapWaveguide-Fed Wideband Patch Antenna Array for 60-GHz Applications

D. Zarifi, A. Farahbakhsh, Ashraf Uz Zaman
IEEE Transactions on Antennas and Propagation. Vol. 65 (9), p. 4875-4879
Artikel i vetenskaplig tidskrift
2017

A Wideband Contactless and Bondwire-Free MMIC to Waveguide Transition

Alhassan Aljarosha, Ashraf Uz Zaman, Rob Maaskant
IEEE Microwave and Wireless Components Letters. Vol. 27 (5), p. 437-439
Artikel i vetenskaplig tidskrift
2017

Design of 8 × 8 Slot Array Antenna based on Inverted Microstrip Gap Waveguide

Jinlin Liu, Abbas Vosoogh, Ashraf Uz Zaman et al
2016 International Symposium on Antennas and Propagation (ISAP), p. 760-761
Paper i proceeding
2016

Demonstration of a micromachined planar distribution network in gap waveguide technology for a linear slot array antenna at 100 GHz

Sofia Rahiminejad, Ashraf Uz Zaman, Sjoerd Haasl et al
Journal of Micromechanics and Microengineering. Vol. 26 (7), p. Art. no. 074001-
Artikel i vetenskaplig tidskrift
2016

Design and Fabrication of a High-Gain 60-GHz Corrugated Slot Antenna Array With Ridge Gap Waveguide Distribution Layer

D. Zarifi, A. Farahbakhsh, Ashraf Uz Zaman et al
IEEE Transactions on Antennas and Propagation. Vol. 64 (7), p. 2905-2913
Artikel i vetenskaplig tidskrift
2016

Micromachined Linear Slot Array Antenna for 100 GHz with 10 dB Gain Using GAP Waveguide Technology

Sofia Rahiminejad, Ashraf Uz Zaman, Sjoerd Haasl et al
10th European Conference on Antennas and Propagation (EUCAP 2016)
Paper i proceeding
2016

In memory of Professor Per-Simon Kildal

Arne Svensson, Jan Carlsson, John Conway et al
IEEE Antennas and Propagation Magazine. Vol. 58 (4), p. 116-117
Övrig text i vetenskaplig tidskrift
2016

Design of transition from WR-15 to inverted microstrip gap waveguide

Jinlin Liu, Ashraf Uz Zaman, Per-Simon Kildal
2016 Global Symposium on Millimeter Waves, GSMM 2016 and ESA Workshop on Millimetre-Wave Technology and Applications, Espoo, Finland, 6-8 June 2016, p. 131-134
Paper i proceeding
2016

Mm-Wave contactless connection for MMIC integration in gap waveguides

Alhassan Aljarosha, Rob Maaskant, Ashraf Uz Zaman et al
2016 IEEE Antennas and Propagation Society International Symposium, APSURSI 2016, Fajardo, Puerto Rico, 26 June - 1 July 2016, p. 253-254
Paper i proceeding
2016

Millimeter Wave E-Plane Transition From Waveguide to Microstrip Line With Large Substrate Size Related to MMIC Integration

Ashraf Uz Zaman, Vessen Vassilev, Per-Simon Kildal et al
IEEE Microwave and Wireless Components Letters. Vol. 26 (7), p. 481-483
Artikel i vetenskaplig tidskrift
2016

Optimizing the numerical port for inverted microstrip gap waveguide in full-wave simulators

Jinlin Liu, Ashraf Uz Zaman, Per-Simon Kildal
10th European Conference on Antennas and Propagation, EuCAP 2016
Paper i proceeding
2016

Corporate distribution networks for slot array antenna based on groove gap waveguide technology

A. Farahbakhsh, D. Zarifi, Ashraf Uz Zaman et al
10th European Conference on Antennas and Propagation, EuCAP 2016, Davos, Switzerland, 10-15 April 2016, p. Art. no. 7481157-
Paper i proceeding
2016

A high gain ridge gap waveguide fed slot antenna array for 60 GHz applications

D. Zarifi, A. Farahbakhsh, Ashraf Uz Zaman et al
10th European Conference on Antennas and Propagation, EuCAP 2016; Davos; Switzerland; 10 April 2016 through 15 April 2016, p. Art. no. 7481703-
Paper i proceeding
2016

Different gap waveguide slot array configurations for mmwave fixed beam antenna application

Ashraf Uz Zaman, Per-Simon Kildal
10th European Conference on Antennas and Propagation, EuCAP 2016; Davos; Switzerland; 10 April 2016 through 15 April 2016, p. Art. no. 7481541-
Paper i proceeding
2016

Design of a Cavity-backed Slot Array Unit Cell on Inverted Microstrip Gap Waveguide

Jinlin Liu, Abbas Vosoogh, Ashraf Uz Zaman et al
International Symposium on Antennas and Propagation (ISAP)
Paper i proceeding
2016

W-band spatial power combiner and splitter in gap waveguide technology

Waqar Ali Shah, Rob Maaskant, Ashraf Uz Zaman et al
2016 IEEE Antennas and Propagation Society International Symposium, APSURSI 2016, Fajardo, Puerto Rico, 26 June - 1 July 2016, p. 255-256
Paper i proceeding
2016

GAP waveguides

Ashraf Uz Zaman, Per-Simon Kildal
Handbook of Antenna Technologies. Vol. 4, p. 3273-3347
Kapitel i bok
2016

Spatial Power Combining and Splitting in Gap Waveguide Technology

Rob Maaskant, Waqar Ali Shah, Ashraf Uz Zaman et al
IEEE Microwave and Wireless Components Letters. Vol. 26 (7), p. 472-474
Artikel i vetenskaplig tidskrift
2015

A groove gap Waveguide Iris Filter for V-band Application

Morteza Rezaee, Ashraf Uz Zaman, Per-Simon Kildal
23rd Iranian Conference on Electrical Engineering (ICEE), 2015. Vol. 10, p. 462-465
Paper i proceeding
2015

V-Band Groove Gap Waveguide Diplexer

Morteza Rezaee, Ashraf Uz Zaman, Per-Simon Kildal
9th European Conference on Antennas and Propagation, EuCAP 2015, Lisbon, Portugal, 13-17 May 2015, p. 1-4
Paper i proceeding
2015

A New 2x2 Microstrip Patch Sub-array for 60GHz Wideband Planar Antenna with Ridge Gap Waveguide Distribution Layer

Ashraf Uz Zaman, Per-Simon Kildal
9th European Conference on Antennas and Propagation, EuCAP 2015, Lisbon, Portugal, 13-17 May 2015
Paper i proceeding
2014

Prospective new PMC based gap waveguide shielding for microwave modules

Ashraf Uz Zaman, Eva Rajo, Per-Simon Kildal
IEEE International Symposium on Electromagnetic Compatibility, p. 459-463
Paper i proceeding
2014

Gap Waveguide PMC Packaging for Improved Isolation of Circuit Components in High-Frequency Microwave Modules

Ashraf Uz Zaman, Mats Alexanderson, Tin Vukusic et al
IEEE Transactions on Components, Packaging and Manufacturing Technology. Vol. 4 (1), p. 16-25
Artikel i vetenskaplig tidskrift
2014

60GHz Slot-Array Antenna Design Based on Gap Waveguide Cavity and Gap Waveguide Feed

Ashraf Uz Zaman, Per-Simon Kildal
Paper i proceeding
2014

MICROMACHINED GAP WAVEGUIDE DEVICES FOR ABOVE 100 GHZ

Sofia Rahiminejad, Elena Pucci, Ashraf Uz Zaman et al
10TH MICRONANO SYSTEM WORKSHOP
Paper i proceeding
2014

Micromachined gap waveguide devices for above 100 GHz

Sofia Rahiminejad, Elena Pucci, Ashraf Uz Zaman et al
Swedish Microwave Days March 11-12, 2014
Paper i proceeding
2014

Wide-Band Slot Antenna Arrays With Single-Layer Corporate-Feed Network in Ridge Gap Waveguide Technology

Ashraf Uz Zaman, Per-Simon Kildal
IEEE Transactions on Antennas and Propagation. Vol. 62 (6), p. 2992-3001
Artikel i vetenskaplig tidskrift
2013

Micromachined Groove Gap Waveguides for 100 GHz applications

Sofia Rahiminejad, Syed Hasan Raza Zaidi, Ashraf Uz Zaman et al
7th European Conference on Antennas and Propagation, EuCAP 2013, Gothenburg, Sweden, 8-12 April 2013
Paper i proceeding
2013

Ka-Band Gap Waveguide Coupled-Resonator Filter for Radio Link Diplexer Application

Esperanza Alfonso Alos, Ashraf Uz Zaman, Per-Simon Kildal
IEEE Transactions on Components, Packaging and Manufacturing Technology. Vol. 3 (5), p. 870-879
Artikel i vetenskaplig tidskrift
2013

Micromachined gap waveguides for 100 GHz applications

Sofia Rahiminejad, Syed Hasan Raza Zaidi, Ashraf Uz Zaman et al
2013 7th European Conference on Antennas and Propagation, EuCAP 2013, p. 1935-1938
Paper i proceeding
2013

Packaging of MMIC by using gap waveguide and design of a microstrip to ridge gap waveguide transition

Ashraf Uz Zaman, Per-Simon Kildal
2013 3rd Asia-Pacific Microwave Conference, APMC 2013; Seoul; South Korea; 5 November 2013 through 8 November 2013, p. 10-12
Paper i proceeding
2013

Study of Q-Factors of Ridge and Groove Gap Waveguide Resonators

Elena Pucci, Ashraf Uz Zaman, Eva Rajo et al
IET Microwaves, Antennas and Propagation. Vol. 7 (11), p. 900-908
Artikel i vetenskaplig tidskrift
2013

Design of a simple transition from microstrip to ridge gap waveguide suited for MMIC and antenna integration

Ashraf Uz Zaman, Tin Vukusic, Mats Alexanderson et al
IEEE Antennas and Wireless Propagation Letters. Vol. 12, p. 1558 - 1561
Artikel i vetenskaplig tidskrift
2013

Ku band linear slot-array in ridge gapwaveguide technology

Ashraf Uz Zaman, Per-Simon Kildal
2013 7th European Conference on Antennas and Propagation, EuCAP 2013, p. 3078-3081
Paper i proceeding
2013

SU8 Ridge Gap Resonator

Sofia Rahiminejad, Elena Pucci, Ashraf Uz Zaman et al
MEMSWAVE, 2013, Potsdam, Germany
Paper i proceeding
2013

Linear slot array design in ridge gap waveguide technology

Ashraf Uz Zaman, Per-Simon Kildal
7th European Conference on Antennas and Propagation, EuCAP 2013, Gothenburg, Sweden, 8-12 April 2013
Paper i proceeding
2012

Micromachined Ridge Gap Waveguide and Resonator for Millimeter-Wave Applications

Sofia Rahiminejad, Ashraf Uz Zaman, Elena Pucci et al
Sensors and Actuators, A: Physical. Vol. 186, p. 264-269
Artikel i vetenskaplig tidskrift
2012

Slot antenna in ridge gap waveguide technology

Ashraf Uz Zaman, Per-Simon Kildal
Proceedings of 6th European Conference on Antennas and Propagation, EuCAP 2012. Prague, 26-30 March 2012, p. 3243-3244
Paper i proceeding
2012

Bed of Springs for Packaging of Microstrip Circuits in the Microwave Frequency Range

Eva Rajo, Per-Simon Kildal, Ashraf Uz Zaman et al
IEEE Transactions on Components, Packaging and Manufacturing Technology. Vol. 2 (10), p. 1623-1628
Artikel i vetenskaplig tidskrift
2012

Gap waveguide components for millimeter-wave systems. Couplers, filters, antennas, MMIC packaging

Esperanza Alfonso Alos, Ashraf Uz Zaman, Elena Pucci et al
IEEE Antennas and Propagation Society, AP-S International Symposium (Digest), p. 243-246
Paper i proceeding
2012

Micromachined Ridge Gap Waveguide and Resonator for 220-325 GHz

Sofia Rahiminejad, Ashraf Uz Zaman, Elena Pucci et al
Micronano Systems Workshop
Poster (konferens)
2012

Design of a coplanar waveguide-to-ridge gap waveguide transition via capacitive coupling

Astrid Algaba Brazalez, Ashraf Uz Zaman, Per-Simon Kildal
Proceedings of 6th European Conference on Antennas and Propagation, EuCAP 2012. Prague, 26-30 March 2012, p. 3524-3528
Paper i proceeding
2012

Investigation of a Microstrip-to-Ridge Gap Waveguide transition by electromagnetic coupling

Astrid Algaba Brazalez, Ashraf Uz Zaman, Per-Simon Kildal
IEEE Antennas and Propagation Society, AP-S International Symposium (Digest), p. 1-2
Paper i proceeding
2012

Numerical Prepackaging with PMC Lid - Efficient and Simple Design Procedure for Microstrip Circuits Including the Packaging

A. Kishk, Ashraf Uz Zaman, Per-Simon Kildal
Applied Computational Electromagnetics Society Journal. Vol. 27 (5), p. 389-398
Artikel i vetenskaplig tidskrift
2012

Metamatrial based packaging method for improved isolation of circuit elements in microwave modules

Ashraf Uz Zaman, Mubarak Ellis, Per-Simon Kildal
7th European Microwave Integrated Circuits Conference, EuMIC 2012 - Held as Part of 15th European Microwave Week, EuMW 2012; Amsterdam; Netherlands; 29 October 2012 through 30 October 2012, p. 834-837
Paper i proceeding
2012

Improved Microstrip Filters Using PMC Packaging by Lid of Nails

Astrid Algaba Brazalez, Ashraf Uz Zaman, Per-Simon Kildal
IEEE Transactions on Components, Packaging and Manufacturing Technology. Vol. 2 (7), p. 1075-1084
Artikel i vetenskaplig tidskrift
2012

Narrow-Band Microwave Filter Using High-Q Groove Gap Waveguide Resonators With Manufacturing Flexibility and No Sidewalls

Ashraf Uz Zaman, Per-Simon Kildal, A. A. Kishk
IEEE Transactions on Components, Packaging and Manufacturing Technology. Vol. 2 (11), p. 1882-1889
Artikel i vetenskaplig tidskrift
2011

Micromachined ridge gap waveguide for sub millimeter and millimeter wave applications

Sofia Rahiminejad, Ashraf Uz Zaman, Elena Pucci et al
MME 2011: 22nd Micromechanics and Micro Systems Europe Workshop, June 19-22, 2011, Toensberg, Norway
Paper i proceeding
2011

Improving microstrip filters with gap waveguide packaging

Astrid Algaba Brazalez, Ashraf Uz Zaman, Elena Pucci et al
Proceedings of the 5th European Conference on Antennas and Propagation, EUCAP 2011. Rome, 11-15 April 2011, p. 1080-1084
Paper i proceeding
2011

Design of Micromachined Ridge Gap Waveguides for Millimeter-Wave Applications

Sofia Rahiminejad, Ashraf Uz Zaman, Elena Pucci et al
Proc. Eurosensors XXV, September 4-7, 2011, Athens, Greece. Vol. 25, p. 519-522
Paper i proceeding
2011

Design and experimental verification of ridge gap waveguides in bed of nails for parallel plate mode suppression

Per-Simon Kildal, Ashraf Uz Zaman, Eva Rajo et al
IET Microwaves, Antennas and Propagation. Vol. 5 (3), p. 262-270
Artikel i vetenskaplig tidskrift
2011

New low loss inverted microstrip line using gap waveguide technology for slot antenna applications

Elena Pucci, Ashraf Uz Zaman, Eva Rajo et al
Proceedings of the 5th European Conference on Antennas and Propagation, EUCAP 2011. Rome, 11-15 April 2011, p. 979-982
Paper i proceeding
2011

Design of Band-Pass Filter Using Gap Waveguide Technology

Ashraf Uz Zaman, Astrid Algaba Brazalez, Per-Simon Kildal
Millimetre Wave Days, 23-25 May 2011, Espoo Finland (6th ESA Workshop on Millimetre-Wave Technology and Applications and 4th Global Symposium on Millimeter Waves)
Paper i proceeding
2011

Progress report on developing metamaterial EBG-based gap waveguide components and packaging solutions between 1 GHz and several 100 Ghz

Per-Simon Kildal, Ashraf Uz Zaman, Eva Rajo et al
URSI National Radio Science Meeting, Spokane, USA, 3-8 July, 2011
Paper i proceeding
2011

Increasing parallel plate stop-band in gap waveguides using inverted pyramid-shaped nails for slot array application above 60GHz

Ashraf Uz Zaman, Vessen Vassilev, Per-Simon Kildal et al
Proceedings of the 5th European Conference on Antennas and Propagation, EUCAP 2011. Rome, 11-15 April 2011, p. 2254-2257
Paper i proceeding
2010

Using lid of pins for packaging of microstrip board for descrambling the ports of Eleven antenna for radio telescope applications

Ashraf Uz Zaman, Jian Yang, Per-Simon Kildal
2010 IEEE International Symposium on Antennas and Propagation, Toronto, July 11-17, 2010
Paper i proceeding
2010

Q-factor comparisons between new gap waveguide technology and standard rectangular waveguide

Elena Pucci, Ashraf Uz Zaman, Eva Rajo et al
Gigahertz Symposium 2010, Lund University, 9-10 March 2010
Paper i proceeding
2010

Cryogenic integration of 2-14 GHz Eleven Feed in wideband receiver for VLBI 2010

Miroslav Pantaleev, Jian Yang, Yogesh Karandikar et al
Sixth IVS General Meeting (International VLBI Service for Geodesy and Astrometry), February 7-13, 2010, Hobart, TAS, Australia, p. 415-419
Övrigt konferensbidrag
2010

Design of cryogenic 2-14 GHz Eleven feed for reflector antennas for future radio telescopes

Jian Yang, Miroslav Pantaleev, Per-Simon Kildal et al
Gigahertz Symposium 2010, Lund University, 9-10 March 2010
Paper i proceeding
2010

Concept of gap waveguide and measured results for first demonstrator

Ashraf Uz Zaman, Per-Simon Kildal, Eva Rajo et al
Gigahertz Symposium 2010, Lund University, 9-10 March 2010
Paper i proceeding
2010

Losses in ridge gap waveguide compared with rectangular waveguide and microstrip lines

Elena Pucci, Ashraf Uz Zaman, Eva Rajo et al
EuCAP 2010 Fourth European Conference on Antennas and Propagation, Barcelona, 12-16 April 2010
Paper i proceeding
2010

Validation of ridge gap waveguide performance using in-house TRL calibration kit

Ashraf Uz Zaman, Per-Simon Kildal, Mattias Ferndahl et al
EuCAP 2010 Fourth European Conference on Antennas and Propagation, Barcelona, 12-16 April 2010
Paper i proceeding
2010

Cryogenic 2-14GHz low noise receiver for radio astronomy using Eleven feed

Miroslav Pantaleev, Jian Yang, Per-Simon Kildal et al
Gigahertz Symposium 2010, Lund University, 9-10 March 2010
Övrigt konferensbidrag
2010

Packaging of microstrip circuits using gap waveguide approach

Eva Rajo, Ashraf Uz Zaman, Per-Simon Kildal et al
Gigahertz Symposium 2010, Lund University, 9-10 March 2010
Paper i proceeding
2009

Alternative ridge gap waveguide design using a mushroom-type EBG surface

Eva Rajo, Ashraf Uz Zaman, E. Alfonso et al
IEEE AP-S International Symposium on Antennas and Propagation, Charleston, USA, June 1-5, 2009
Paper i proceeding
2009

Wideband, lowloss, low-cost, quasi-TEM metamaterial-based local waveguides in air gaps between parallel metal plates

Per-Simon Kildal, Eva Rajo, E. Alfonso et al
International Conference on Electromagnetics in Advanced Applications (ICEAA 2009), Torino, Italy, September 14-18, 2009. Vol. 1-2, p. 565-568
Paper i proceeding
2009

Design of Transition from Coaxial Line to Ridge Gap Waveguide

Ashraf Uz Zaman, Eva Rajo, E. Alfonso et al
2009 IEEE International Symposium on Antennas and Propagation and USNC/URSI National Radio Science Meeting, APSURSI 2009; North Charleston, SC; United States; 1 June 2009 through 5 June 2009
Paper i proceeding
2009

Parallel plate cavity mode suppression in microstrip circuit packages using a lid of nails

Eva Rajo, Ashraf Uz Zaman, Per-Simon Kildal
IEEE Microwave and Wireless Components Letters. Vol. 20 (1), p. 31-33
Artikel i vetenskaplig tidskrift
2009

Design of Transitions and Calibration Kit in New Wideband Metamaterial-based Gap Waveguide Transmission Line Technology For Millimeter and Submillimeter Waves

Ashraf Uz Zaman, Eva Rajo, Elena Pucci et al
Joint 5th ESA Workshop on Millimetre Wave Technology and Applications and 31st ESA Antenna Workshop on “Millimetre and sub-millimetre waves - From technologies to systems”, 18 - 20 May 2009, ESTEC, Noordwijk, The Netherlands
Paper i proceeding
2007

Dual polarised microstrip patch antenna with high port isolation

Ashraf Uz Zaman, Lars Manholm, Anders Derneryd
Electronics Letters. Vol. 43 (10), p. 551-552
Artikel i vetenskaplig tidskrift

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Visar 5 forskningsprojekt

2021–2024

Uppgradering av den nationella infrastrukturen för terahertzkarakterisering för att möjliggöra nästa generation trådlösa tillämpningar och instrument för fjärranalys

Jan Stake Terahertz- och millimetervågsteknik
Dan Kuylenstierna Mikrovågselektronik
Marianna Ivashina Antennsystem
Christian Fager Mikrovågselektronik
Mats Myremark Terahertz- och millimetervågsteknik
Niklas Rorsman Mikrovågselektronik
Ashraf Uz Zaman Antennsystem
Helena Rodilla Terahertz- och millimetervågsteknik
Vetenskapsrådet (VR)

4 publikationer finns
2021–2024

Eureka CELTIC: Energy-Efficient Radio Systems at 100 GHz and beyond: Antennas, Transceivers and Waveforms

Ashraf Uz Zaman Antennsystem
VINNOVA

6 publikationer finns
2019–2022

Hardware For Next generation Millimeter Wave Automotive Radar Sensor

Ashraf Uz Zaman Antennsystem
VINNOVA

5 publikationer finns
2017–2019

SmartBowtie: PCB/LTCC/silikon baserad UWB mm-Wave Smart Capped Bowtie Gruppantenn för 5G kommunikationssystem

Zhongxia Simon He Mikrovågselektronik
Vessen Vassilev Mikrovågselektronik
Jian Yang Antennsystem
Ashraf Uz Zaman Antennsystem
VINNOVA

9 publikationer finns
2015–2017

Millimeter Wave Massive MIMO Gap Waveguide Antenna Module Design Based on Pick and Place Technique

Ashraf Uz Zaman Antennsystem
VINNOVA

2 publikationer finns
Det kan finnas fler projekt där Ashraf Uz Zaman medverkar, men du måste vara inloggad som anställd på Chalmers för att kunna se dem.