Christian Fager
Visar 265 publikationer
A Ka-Band Doherty-Like Non-Load Modulated Power Amplifier
Over-the-Air Linearization of Phased Array Transmitters Affected by Load Modulation
Sigma-Delta-Over-Fiber With WDM Serial Connection for Distributed MIMO
A GaN MMIC Wideband Continuous-Mode Doherty Power Amplifier for 6G FR3 cmWave Applications
6G Radio Testbeds: Requirements, Trends, and Approaches
EVM Analysis of Distributed Massive MIMO with 1-Bit Radio-Over-Fiber Fronthaul
56% PAE mm-Wave SiGe BiCMOS Power Amplifier Employing Local Backside Etching
Recent Developments in Active Load Modulation PA Architectures
Mm-wave Distributed MIMO Radio-over-Fiber Communication Architecture Using Sigma-Delta Modulation
Analysis and Design of RF-Input Doherty-Like Circulator Load Modulated Amplifier
Wideband mm-wave 6 × 2 Distributed MIMO Transmitter using Sigma-Delta-over-Fiber
Deep-Learning-Based Channel Estimation for Distributed MIMO with 1-bit Radio-Over-Fiber Fronthaul
A TDD Distributed MIMO Testbed Using a 1-bit Radio-Over-Fiber Fronthaul Architecture
Design and Validation of a Concurrent Dual-Band 1.84/2.65 GHz GaN Doherty Power Amplifier
Symmetrical Doherty Power Amplifier with High Efficiency and Extended Bandwidth
Improved Digital Predistortion for Concurrent Multiband Transmission Using Frequency Relocation
Dual-Band Dual-Output Four-Way Doherty Power Amplifier for Unsynchronized Time-Division Duplexing
Wideband mm-wave Spectrum-Efficient Transmitter Using Low-Pass Sigma–Delta-Over-Fiber Architecture
Enhancement of Power-Added Efficiency in GaAs Power Amplifiers by Dynamic Gate Biasing
Dual-Band Dual-Output Doherty Power Amplifier for Unsynchronized Time-Division Duplexing
Multilevel Outphasing With Over-the-Air Combining in Large Antenna Arrays
A Wideband and Highly Efficient Circulator Load Modulated Power Amplifier Architecture
VNA-Based Large-Signal Drain-Modulated Power Amplifier Measurement Setup With Digital Pre-Distortion
TX Beamforming EVM Performance of a 65 dBm-EIRP Slant-Polarized Gapwaveguide Phased Array at 28 GHz
Investigation of Fiber Length Differences in Distributed MIMO Sigma-Delta-over-Fiber Systems
Flexible Mm-Wave Sigma-Delta-Over-Fiber MIMO Link
Comparison of Co-located and Distributed MIMO for Indoor Wireless Communication
Design of a Compact GaN Power Amplifier with High Efficiency and Beyond Decade Bandwidth
A Generic Theory for Design of Efficient Three-stage Doherty Power Amplifiers
Localization With Distributed MIMO Using a High-Speed Sigma-Delta-Over-Fiber Testbed
A third order analogue pre-distorter MMIC for E-band PA linearisation
Multi-Stage Gate Modulation of E-Band MMIC Power Amplifier for Efficiency Improvement
FORMAT: A Reconfigurable Tile-Based Antenna Array System for 5G and 6G Millimeter-Wave Testbeds
Complexity Optimized Digital Predistortion Model of RF Power Amplifiers
Wideband Sequential Circulator Load Modulated Amplifier with Back-off Efficiency Enhancement
Algorithmic Radar, a Novel Low-Power Architecture for High-Accuracy PMCW Radar
RF PA Predistortion using Non-Linear RF-DACs
A W-Band Single-Chip Receiver in a 60 nm GaN-on-Silicon Foundry Process
Amplitude Varying Phased Array Linearization
Infinite Impulse Response Structure for Amplifier Modeling and Linearization
Investigation of power amplifier performance under load mismatch conditions
Evaluation of Simultaneous Wireless Information and Power Transfer with Distributed Antennas
E/W-Band CPW-based Amplifier MMICs Fabricated in a 60 nm GaN-on-Silicon Foundry Process
Millimeter-Wave Power Amplifier Integrated Circuits for High Dynamic Range Signals
A Real-Valued 4D Memory Polynomial Algorithm for Mixer Modeling
Emulation of Load Modulated Amplifiers Using Tabulated Load-Pull Data from a Single Amplifier
Automatic Distributed MIMO Testbed for beyond 5G Communication Experiments
Doherty Load Modulation Based on Non-Reciprocity
Analyzing the Back-Gating Effect in GaN HEMTs with Field-Plates Using an Empirical Trap Model
Circulator Load Modulated Amplifier: A Non-Reciprocal Wideband and Efficient PA Architecture
Implementation challenges and opportunities in beyond-5G and 6G communication
A 2x6b 8GS/s 17-24GHz I/Q RF-DAC based Transmitter in 22nm FDSOI CMOS
Welcome to the 15th European Microwave Integrated Circuits Conference
IC Design Aspects for 5G mm-Wave Systems
Antenna Systems for 5G mm-Wave Radio Access
Thermal analysis of GaN/SiC-on-Si assemblies: Effect of bump pitch and thickness of SiC Layer
Emulation of Doherty Amplifiers Using Single- Amplifier Load-Pull Measurements
Hybrid Beamforming Transmitter Modeling for Millimeter-Wave MIMO Applications
Performance simulation of a 5G hybrid beamforming millimeter-wave system
A Wideband and Low-Loss Spatial Power Combining Module for mm-Wave High-Power Amplifiers
Distributed Massive MIMO via all-Digital Radio Over Fiber
Augmented Hammerstein model for the calibration of six-port based dual band wireless receivers
Effect of VCSEL Characteristics on Ultra-High Speed Sigma-Delta-Over-Fiber Communication Links
Intra-Array Coupling Estimation for MIMO Transceivers Utilizing Blind Over-The-Air Measurements
Single Digital Predistortion Technique for Phased Array Linearization
Thermal characteristics of vertically-integrated GaN/SiC-on-Si assemblies: A comparative study
Improvement of AM-PM in a 33-GHz CMOS SOI Power Amplifier Using pMOS Neutralization
Reducing Motion Artifacts in Microwave-Based Hemorrhagic Stroke Detection
Evaluation of Distributed MIMO Communication Using a Low-Complexity Sigma-Delta-over-Fiber Testbed
Massive MU-MIMO-OFDM uplink with direct RF-sampling and 1-Bit ADCs
Combiner synthesis for active load-modulationbased power amplifiers
A Low-Complexity Distributed-MIMO Testbed Based on High-Speed Sigma-Delta-Over-Fiber
Accurate Modeling of GaN HEMT RF Behavior Using an Effective Trapping Potential
Lower Bound for the Normalized Mean Square Error in Power Amplifier Linearization
Modeling and Linearization of Multi-Antenna Transmitters Using Over-the-Air Measurements
A Flexible Multi-Gbps Transmitter Using Ultra-High Speed Sigma- Delta-over- Fiber
A Generalized 3-dB Wilkinson Power Divider/Combiner With Complex Terminations
Investigations of Active Antenna Doherty Power Amplifier Modules Under Beam-Steering Mismatch
Digital Predistortion for Multi-Antenna Transmitters Affected by Antenna Crosstalk
Design and Large-Signal Characterization of High-Power Varactor-Based Impedance Tuners
RF Front-End Circuits and Architectures for IoT/LTE-A/5G Connectivity
Design Considerations and Evaluation of a High-Speed SAR ADC
Analysis of Thermal Effects in Integrated Radio Transmitters
Characterization of linear power amplifiers for LTE applications
Analysis and Design of a Doherty-Like RF-Input Load Modulated Balanced Amplifier
Vector-corrected Nonlinear Multi-port IQ-mixer Characterization using Modulated Signals
Driver Topologies for RF Doherty Power Amplifiers
Prediction of Nonlinear Distortion in Wideband Active Antenna Arrays
Analysis of thermal coupling effects in integrated MIMO transmitters
Analysis of nonlinear distortion in phased array transmitters
Design of linear and efficient power amplifiers by generalization of the Doherty theory
Efficient Millimeter Wave Doherty PA Design Based on a Low-Loss Combiner Synthesis Technique
A Generalized Combiner Synthesis Technique for Class-E Outphasing Transmitters
Digital Predistortion Parameter Identification for RF Power Amplifiers Using Real-Valued Output Data
Accurate Circuit Characterization Methods for mm‐Wave 5G Systems
Digital Predistorter Model Derivation Based on Iterative Learning Control
Symmetrical Doherty Power Amplifier With Extended Efficiency Range
A Doherty Power Amplifier Design Method for Improved Efficiency and Linearity
Current scaled Doherty amplifier for high efficiency and high linearity
Iterative Learning Control for RF Power Amplifier Linearization
Structured Digital Predistorter Model Derivation Based on Iterative Learning Control
Wideband RF characterization setup with high dynamic range low frequency measurement capabilities
A class-J power amplifier with varactor-based dynamic load modulation across a large bandwidth
Outphasing combiner synthesis from transistor load pull data
WebLab: A Web-Based Setup for PA Digital Predistortion and Characterization
Optimized Design of a Dual-Band Power Amplifier With SiC Varactor-Based Dynamic Load Modulation
Symmetry based nonlinear model for GaN HEMTs
An Oscilloscope Correction Method for Vector-Corrected RF Measurements
Symmetry based Nonlinear Model for GaN
A new variant of the indirect learning architecture for the linearization of power amplifiers
Efficiency optimization for phase controlled multi-source microwave oven
Efficient and Wideband Power Amplifiers for Wireless Infrastructure Applications
Scalability Analysis and Modeling of Future Massive MIMO Antenna Array Systems
Linearization of Difficult Cases - MIMO, GaN and Deep Compression
Design Method for Quasi-Optimal Multiband Branch-Line Couplers
A GaN MMIC Modified Doherty PA With Large Bandwidth and Reconfigurable Efficiency
On the Impact of Hardware Impairments on Massive MIMO
Prediction of smart antenna transmitter characteristics using a new behavioral modeling approach
Digital predistortion of concurrent multiband communication systems
Symmetrical modeling of GaN HEMTS
Symmetrical doherty amplifier with high efficiency over large output power dynamic range
Linearization of dual-input Doherty power amplifiers
Symmetrical Large-Signal Modeling of Microwave Switch FETs
Investigation of Push-Pull Microwave Power Amplifiers Using an Advanced Measurement Setup
A packaged 86 W GaN transmitter with SiC varactor-based dynamic load modulation
Linearity, Intermodulation Distortion and ACLR in Outphasing Amplifiers
A Novel Active Load-pull System with Multi-Band Capabilities
A Modified Doherty Power Amplifier With Extended Bandwidth and Reconfigurable Efficiency
A 44 dBm 1.0-3.0 GHz GaN Power Amplifier with over 45% PAE at 6 dB back-off
A Wideband and Compact GaN MMIC Doherty Amplifier for Microwave Link Applications
Theory and Design of Class-J Power Amplifiers With Dynamic Load Modulation
Decade bandwidth high efficiency GaN HEMT power amplifier designed with resistive harmonic loading
Oscilloscope based two-port measurement system using error-corrected modulated signals
Digital Predistortion for Dual-Input Doherty Amplifiers
Concurrent Dual-Band GaN-HEMT Power Amplifier at 1.8 GHz and 2.4 GHz
A novel wideband and reconfigurable high average efficiency power amplifier
Multi-band/Multi-mode and Efficient Transmitter Based on a Doherty Power Amplifier
Linearization Study of a Highly Efficient CMOS-GaN RF Pulse Width Modulation Based Transmitter
2-D enhanced hammerstein behavior model for concurrent dual-band power amplifiers
An RF Carrier Bursting System using Partial Quantization Noise Cancellation
Branch-Line Coupler Design Operating in Four Arbitrary Frequencies
2-D Enhanced Hammerstein Behavior Model for Concurrent Dual-Band Power Amplifier
Design of a Concurrent Dual-Band 1.8-2.4-GHz GaN-HEMT Doherty Power Amplifier
Digital Predistortion Using a Vector Switched Model
Continuous Class-E Power Amplifier Modes
Modeling of Long Term Memory Effects in RF Power Amplifiers with Dynamic Parameters
High-Efficiency RF Pulsewidth Modulation of Class-E Power Amplifiers
A double stub impedance tuner with SiC diode varactors
Nonlinear Transistor Model Parameter Extraction Techniques
Varactor-Based Dynamic Load Modulation of RF PAs
Uncertainties in small-signal equivalent circuit modeling
Comparison of bandwidth reduction schemes in dynamic load modulation power amplifier architectures
High-Efficiency Power Amplifier
High efficiency RF pulse width modulation with tunable load network class-E PA
High efficiency power amplifier design using switch mode optimized transistor models
Highly efficient GaN-HEMT power amplifiers at 3.5 GHz and 5.5 GHz
Measurement setup for digital predistortion adaptation
Linearization of Efficiency-Optimized Dynamic Load Modulation Transmitter Architectures
Successive Cancellation of Power Amplifier Distortion for Multiuser Detection
Quantization Noise Minimization in ΣΔ-modulation based RF Transmitter Architectures
A highly efficient 1-GHz, 15-W power amplifier design based on a 50-V LDMOS transistor
Design of Highly Efficient Load Modulation Transmitter for Wideband Cellular Applications
High Efficiency Transmitter Using Varactor Based Dynamic Load Modulation
Band-reconfigurable LDMOS power amplifier
Highly Efficient Dynamic Load Modulation Transmitter
Design of a Highly Efficient 2–4-GHz Octave Bandwidth GaN-HEMT Power Amplifier
Model-Based Adaptation of RF Power Amplifiers
Complexity Analysis of Power Amplifier Behavioral Models
A highly efficient 3.5 GHz inverse class-F GaN HEMT power amplifier
Low-complexity volterra modeling of power amplifiers
A Comparative Analysis of the Complexity/Accuracy Tradeoff in Power Amplifier Behavioral Models
A broadband, efficient, overdriven class-J RF power amplifier for burst mode operation
Multi-line TRL calibration compared to a general de-embedding method
A general method for passband quantization noise suppression in pulsed transmitter architectures.
Nonideality sources and implementation considerations in polar transmitters
Time Mismatch Effects in a Dynamic Load Modulation Transmitter Architecture
An Inverse Class-F GaN HEMT Power Amplifier with 78% PAE at 3.5 GHz
I/Q Imbalance Compensation Using a Nonlinear Modeling Approach
Noise-Shaped Coding and Quantization Noise Suppression for Pulsed Transmitter Architectures
Characterization Setup for Device Level Dynamic Load Modulation Measurements
High-Efficiency LDMOS Power-Amplifier Design at 1 GHz Using an Optimized Transistor Model
Design of High Efficiency Ka-Band Harmonically Tuned Power Amplifiers
Dual-Input Nonlinear Modeling for I/Q Modulator Distortion Compensation
Dynamic load modulation of high power amplifiers with varactor-based matching networks
Evaluation of high efficiency PAs for use in supply- and load-modulation transmitters
Time Alignment in a Dynamic Load Modulation Transmitter Architecture
Practical realizations of high efficiency switched mode power amplifiers
Compensation of Transmitter Distortion Using a Nonlinear Modeling Approach
Comparative analysis of the complexity/accuracy tradeoff for power amplifier behavior models
An efficiency optimized controlling scheme for dynamic load modulation of power amplifiers
On-wafer network analyser uncertainty estimation
Nonideality Sources and Implementation Considerations in Polar Transmitters
Orthonormal-basis power amplifier model reduction
SiC Varactors for Dynamic Load Modulation of High Power Amplifiers
Identification of Distortions in a RF Measurement System
Voltage/Current mode class D amplifiers and their applications
Modeling of dual-input power amplifiers
Single stage CMOS Power Amplifier at 23 GHz
Large Signal IMD Behaviour: Load Line and Bias
60 GHz Single-Chip Front-End MMICs and Systems for Multi-Gbps Wireless Communication
System Level Modelling of RF Power Amplifiers Based on Large-Signal Measurements
Polar/ET Transmitters: Non-Idealities and Practical Implementation Aspects
High Efficiency Modulation of Switched Mode LDMOS Power Amplifiers
Improvement of Oscilloscope Based RF Measurements by Statistical Averaging Techniques
Modelling of LDMOSFET and GaN devices
Statistical estimation of the propagation constant in multiline calibrations
Single-Chip 60 GHz Transmitter and Receiver MMICs in a GaAs mHEMT Technology
Modelling of LDMOSFET and GaN devices (invited)
High Efficiency LDMOS Current Mode Class-D Power amplifier at 1 GHz
Understanding and accurate modelling of nonlinear LDMOS transistor dc characteristics
Highly Integrated 60 GHz Transmitter and Receiver MMICs in a GaAs pHEMT Technology
Systems and Applications for Broadband Wireless Communication in the 60 GHz band
Equivalent circuit modeling of LDMOS transistors
Understanding and prediction of IMD behaviour in power amplifiers
A general procedure for extraction of bias dependent dynamic self heating model parameters
Linearity versus efficiency in mobile handset power amplifiers: A battle without a loser
Optimization of power amplifier transfer characteristics
A comprehensive analysis of IMD behavior in RF CMOS power amplifiers
Statistical Estimation of small signal FET model parameters and their covariance
Optimal parameter extraction and uncertainty estimation in intrinsic FET small-signal models
Intermodulation distortion behavior in LDMOS transistor amplifiers
Prediction of IMD in LDMOS transistor amplifiers using a new large-signal model
Uncertainty estimation and optimal extraction of intrinsic FET small-signal model parameters
High output power, broadband 28-56 GHz MMIC frequency doubler
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Visar 24 forskningsprojekt
Multi-functional full-duplex radios for terrestrial and non-terrestrial communication and sensing
Konfigurerbara Mikrovågs Sändtagare för Multifunktionella Sensorer
classIC - Chalmers Lund Center for Advanced Semiconductor System Design
Affordable smart GaN IC solutions as enabler of greener applications (ALL2GaN)
A Dual-frequency Distributed MIMO Approach for Future 6G Applications
European Core Technologies for Next Generation Communication-Computing Hardware
Single-chip super-efficient frequency comb transmitter
Reconfigurable Intelligent Sustainable Environments for 6G Wireless Networks
Improving road safety by high-frequency 5G localization and sensing
Distributed massive MIMO with low-precision components
MyWave - Efficient Millimetre-Wave Communications for mobile users
gan-on-Silicon Efficient mm-wave euRopean systEm iNtegration plAtform (SERENA)
Kompakt Millimetervågsbyggsätt för Framtidens Kommunikations- och Sensorsystem
Smarta radiosändare för framtidens millimetervågssystem
Kompakt Millimetervågsbyggsätt för Framtidens Kommunikations- och Sensorsystem (Förstudie)
Millimetervåg-backhaul med över 100 Gbit/s - driva smarta antenner till sin spets
Digital Radio-över-Fiber: En ny typ av radiosändare för framtidens trådlösa tillämpningar
Energieffektiva millimetervågssändare
Modellering och signaloptimering för sändararkitekturer med flera antenner
High efficiency electronic cooking systems (HEECS)