Ashraf Uz Zaman

Senior Researcher at Antennas
Image of Ashraf Uz Zaman

Showing 183 publications

2023
Open Access icon

Gapwaveguide Automotive Imaging Radar Antenna with Launcher in Package Technology

Qiannan Ren, Carlo Bencivenni, Giorgio Carluccio et al
IEEE Access. Vol. In Press
Journal article
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
Journal article
2023

E-Band Low-Loss Reconfigurable Phase Shifters

Enlin Wang, Sam Agneessens, Ashraf Uz Zaman et al
IEEE MICROWAVE AND WIRELESS TECHNOLOGY LETTERS. Vol. In Press
Journal article
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. In Press
Journal article
2023
Open Access icon

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
Journal article
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 in 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 in proceeding
Show project
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 in 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. In Press
Journal article
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 in proceeding
2022
Open Access icon

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
Journal article
Show project
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 in proceeding
Show project
2022
Open Access icon

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
Journal article
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 in proceeding
2022
Open Access icon

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
Journal article
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 in proceeding
2022
Open Access icon

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

Sadia Farjana, Ashraf Uz Zaman, Per Lundgran et al
IEEE Access. Vol. In Press
Journal article
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. In Press
Journal article
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. In Press
Journal article
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 in 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
Journal article
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 in proceeding
Show project
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 in 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
Journal article
2021
Open Access icon

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 in 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
Journal article
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 in proceeding
2021
Open Access icon

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 in proceeding
Show project
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 in 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
Journal article
Show project
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
Journal article
2021
Open Access icon

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
Journal article
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 in 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
Journal article
Show project
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
Journal article
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 in 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 in proceeding
2020
Open Access icon

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
Journal article
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
Journal article
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 in proceeding
Show project
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-+
Journal article
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 in proceeding
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
Journal article
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
Journal article
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
Journal article
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 in 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 in 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
Journal article
2019
Open Access icon

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
Journal article
2019
Open Access icon

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 in proceeding
2019

Gap Waveguide Technology

Eva Rajo, Z. Sipus, Ashraf Uz Zaman
Surface Electromagnetics: With Applications in Antenna, Microwave, and Optical Engineering, p. 198-230
Book chapter
2019
Open Access icon

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 in proceeding
Show project
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 in 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 in 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 in 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 in 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 in proceeding
2019
Open Access icon

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 in proceeding
Show project
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 in proceeding
2019
Open Access icon

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 in proceeding
Show project
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 in proceeding
Show project
2019
Open Access icon

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
Journal article
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 in proceeding
2019
Open Access icon

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
Journal article
2019
Open Access icon

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
Journal article
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 in proceeding
2019
Open Access icon

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 in proceeding
2019
Open Access icon

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 in proceeding
2019

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

Sadegh Mansouri Moghaddam, Jian Yang, Andres Alayon Glazunov et al
ISAP 2018 - 2018 International Symposium on Antennas and Propagation
Paper in proceeding
Show project
Show project
2019
Open Access icon

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 in 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 in proceeding
2019
Open Access icon

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 in 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 in proceeding
2018

Capacitive-coupled groove gap waveguide filter

Morteza Rezaee, Ashraf Uz Zaman
IET Conference Publications. Vol. 2018 (CP741)
Paper in proceeding
2018
Open Access icon

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 in 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 in proceeding
2018
Open Access icon

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
Journal article
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 in proceeding
2018
Open Access icon

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
Journal article
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 in 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 in 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 in proceeding
Show project
2018
Open Access icon

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 in proceeding
Show project
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
Journal article
2018
Open Access icon

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 in proceeding
2018
Open Access icon

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
Journal article
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 in proceeding
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 in proceeding
2018
Open Access icon

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 in 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
Journal article
2018
Open Access icon

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
Journal article
Show project
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 in proceeding
Show project
2018
Open Access icon

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
Journal article
Show project
2017
Open Access icon

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 in 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 in proceeding
2017
Open Access icon

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)
Paper in proceeding
2017
Open Access icon

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)
Paper in proceeding
2017
Open Access icon

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 in proceeding
2017
Open Access icon

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 in proceeding
2017
Open Access icon

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
Journal article
2017
Open Access icon

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 in proceeding
2017
Open Access icon

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
Journal article
2017
Open Access icon

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 in 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 in proceeding
2017
Open Access icon

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 in proceeding
2017
Open Access icon

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
Paper in proceeding
2017
Open Access icon

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 in proceeding
2017
Open Access icon

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
Journal article
2017
Open Access icon

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
Journal article
2017
Open Access icon

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
Journal article
2017
Open Access icon

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
Journal article
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
Journal article
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)
Paper in proceeding
2017
Open Access icon

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 in 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-
Journal article
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 in proceeding
2016
Open Access icon

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 in proceeding
2016
Open Access icon

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 in proceeding
2016
Open Access icon

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 in proceeding
2016
Open Access icon

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 in proceeding
2016
Open Access icon

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
Journal article
2016
Open Access icon

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 in proceeding
2016

GAP waveguides

Ashraf Uz Zaman, Per-Simon Kildal
Handbook of Antenna Technologies. Vol. 4, p. 3273-3347
Book chapter
2016
Open Access icon

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 in proceeding
2016
Open Access icon

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
Journal article
2016
Open Access icon

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 in proceeding
2016
Open Access icon

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
Journal article
2016
Open Access icon

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
Other text in scientific journal
2016
Open Access icon

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 in proceeding
2015
Open Access icon

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, p. 462-465
Paper in proceeding
2015
Open Access icon

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 in proceeding
2015
Open Access icon

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 in proceeding
2014

MICROMACHINED GAP WAVEGUIDE DEVICES FOR ABOVE 100 GHZ

Sofia Rahiminejad, Elena Pucci, Ashraf Uz Zaman et al
10TH MICRONANO SYSTEM WORKSHOP
Paper in proceeding
2014
Open Access icon

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

Ashraf Uz Zaman, Per-Simon Kildal
Paper in proceeding
2014
Open Access icon

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
Journal article
2014
Open Access icon

Prospective new PMC based gap waveguide shielding for microwave modules

Ashraf Uz Zaman, Eva Rajo, Per-Simon Kildal
IEEE International Symposium on Electromagnetic Compatibility, EMC Europe 2014; Swedish Exhibition and Congress CentreGothenburg; Sweden; 1 September 2014 through 4 September 2014, p. 459-463
Paper in 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 in proceeding
2014
Open Access icon

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
Journal article
2013
Open Access icon

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 in 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 in proceeding
2013
Open Access icon

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
Journal article
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 in 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 in proceeding
2013

SU8 Ridge Gap Resonator

Sofia Rahiminejad, Elena Pucci, Ashraf Uz Zaman et al
MEMSWAVE, 2013, Potsdam, Germany
Paper in proceeding
2013
Open Access icon

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
Journal article
2013
Open Access icon

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
Journal article
2013
Open Access icon

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 in proceeding
2012
Open Access icon

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
Journal article
2012
Open Access icon

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 in proceeding
2012
Open Access icon

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 in proceeding
2012
Open Access icon

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 in proceeding
2012
Open Access icon

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 in proceeding
2012
Open Access icon

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
Journal article
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
Paper in proceeding
2012
Open Access icon

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
Journal article
2012
Open Access icon

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

Esperanza Alfonso Alos, Ashraf Uz Zaman, Elena Pucci et al
International Symposium on Antennas and Propagation, ISAP 2012, Oct 29-Nov. 2 2012, Nagoya, Japan, p. 243-246
Paper in proceeding
2012

Micromachined Ridge Gap Waveguide and Resonator for 220-325 GHz

Sofia Rahiminejad, Ashraf Uz Zaman, Elena Pucci et al
Micronano Systems Workshop
Conference poster
2012
Open Access icon

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
Journal article
2011
Open Access icon

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 in proceeding
2011
Open Access icon

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 in proceeding
2011
Open Access icon

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 in proceeding
2011
Open Access icon

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
Journal article
2011
Open Access icon

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 in 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 in proceeding
2011
Open Access icon

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 in proceeding
2011
Open Access icon

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 in 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 in proceeding
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 in proceeding
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 in 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 in 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 in 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 in 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 in 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
Other conference contribution
2010
Open Access icon

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
Other conference contribution
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
Journal article
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 in proceeding
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 in 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 in 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 in 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
Journal article

Download publication list

You can download this list to your computer.

Filter and download publication list

As logged in user (Chalmers employee) you find more export functions in MyResearch.

You may also import these directly to Zotero or Mendeley by using a browser plugin. These are found herer:

Zotero Connector
Mendeley Web Importer

The service SwePub offers export of contents from Research in other formats, such as Harvard and Oxford in .RIS, BibTex and RefWorks format.

Showing 4 research projects

2019–2022

Hardware For Next generation Millimeter Wave Automotive Radar Sensor

Ashraf Uz Zaman Antennas
VINNOVA

2 publications exist
2017–2019

SmartBowtie: PCB/LTCC/Silicon Based UWB mm-Wave Smart Capped Bowtie Array Antenna for 5G Communication Systems

Zhongxia Simon He Microwave Electronics
Vessen Vassilev Microwave Electronics
Jian Yang Antennas
Ashraf Uz Zaman Antennas
VINNOVA

9 publications exist
2015–2017

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

Ashraf Uz Zaman Antennas
VINNOVA

2 publications exist
There might be more projects where Ashraf Uz Zaman participates, but you have to be logged in as a Chalmers employee to see them.

Feedback and support

If you have questions, need help, find a bug or just want to give us feedback you may use this form, or contact us per e-mail research.lib@chalmers.se.

About

Research.chalmers.se contains research information from Chalmers University of Technology, Sweden. It includes information on projects, publications, research funders and collaborations.

More about coverage period and what is publicly available

Privacy and cookies

Accessibility

Citation Style Language
citeproc-js (Frank Bennett)

Links

Chalmers Library
Chalmers Research
Chalmers Student Theses

Chalmers University of Technology

SE-412 96 GOTHENBURG, SWEDEN
PHONE: +46 (0)31-772 10 00
WWW.CHALMERS.SE