Low-Complexity Dynamic Directional Modulation: Vulnerability and Information Leakage
In this article, the privacy of wireless transmissions is improved through an efficient technique termed dynamic directional modulation (DDM) and is subsequently […]
Chip-to-chip interfaces for large-scale highly configurable mmWave phased arrays
This article presents a chip-to-chip (C2C) interface for constructing reconfigurable phased arrays to be used in fifth-generation (5G)/sixth-generation (6G) wireless systems. The […]
Hardware Aspects of Sub-THz Antennas and Reconfigurable Intelligent Surfaces for 6G Communications
The need for unrestricted, high-quality, and high-speed communications in planned sixth generation (6G) wireless systems drives the development and research towards the […]
A Wideband IF Receiver Chip for Flexibly Scalable mmWave Subarray Combining and Interference Rejection
Large-scale multibeam phased array systems suffer from interbeam interference (IBI) that should be canceled either in the analog or digital domain. In […]
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 […]