Predistortion-Based Linearization for 5G and Beyond Millimeter-Wave Transceiver Systems
The next-generation (5G/6G) wireless communication aims to leapfrog the currently occupied sub-6 GHz spectrum to the wideband millimeter-wave (MMW) spectrum. However MMW […]
Combined Sidelobe Reduction and Omnidirectional Linearization of Phased Array by Using Tapered Power Amplifier Biasing and Digital Predistortion
Power amplifier (PA) efficiency and linearity are among the key drivers to reduce energy consumption while enabling high data rates in the […]
Improving Analog Zero-Forcing Null Depth with N-bit Vector Modulators in Multi-beam Phased Array Systems
Multiantenna systems can increase the spatial reuse of the wireless spectrum by nulling the interfering directions. However, the efficiency of the spatial […]
5G mmW Link Range Uncertainties from RF System Calculations and OTA measurements
Phased arrays in 5G millimeter wave (mmW) communication are used at both link ends to separate users and to enhance the link […]
System EVM Characterization and Coverage Area Estimation of 5G Directive mmW Links
RF performance of fifth-generation (5G) new radio (NR) millimeter-wave (mmW) system will be characterized over-the-air (OTA) in 3GPP 5G NR performance and […]
Sidelobe reduction by subarray stacking for uniformly excited mmW phased arrays
The performance of multi-user millimeter-wave (mmW) systems is limited by relatively high sidelobe levels (SLLs) of antenna arrays. Per-antenna amplitude control can […]
A Wideband IF Receiver Module for Flexibly Scalable mmWave Beamforming Combining and Interference Cancellation
Large-scale phased arrays need to combine weighted signals from multiple sub-arrays either in analog or in digital domain. Sub-arrays are preferably implemented […]
A Differential Reflection-Type Phase Shifter Based on CPW Coupled-Line Coupler in 45nm CMOS SOI
This paper presents a mm-wave fully differential coplanar waveguide (CPW) vertically-coupled lines coupler and a reflection type phase shifter (RTPS) based on […]
A Fully Differential Single-Stage Four-way mmWave Power Combiner for Phased Array 5G Systems
This paper presents design of a fully differential four-way power combiner for receiver phased array applications. Depending on the system requirements several […]
Over-the-Air Phase Measurement and Calibration Method for 5G mmW Phased Array Radio Transceiver
In this paper, over-the-air (OTA) phase measurement and calibration method for a fifth generation (5G) millimeter wave radio frequency unit is presented. […]