This paper presents the first 28-/37-/39-GHz linear Doherty power amplifier (PA) in silicon for
broadband fifthgeneration (5G) applications. We introduce a new transformer-based on-chip …

Two 4-bit active phase shifters integrated with all digital control circuitry in 0.13-μm RF
CMOS technology are developed for X-and K u-band (8–18 GHz) and K-band (18–26 GHz) …

Active reconfigurable intelligent surfaces (RISs) have recently been proposed to
complement and generalize passive RIS. In this work, the design for an active RIS based on …

We propose the concept and design of terahertz (THz) phase shifters for phased antenna
arrays based on integrally-gated graphene parallel-plate waveguides (GPPWGs). We show …

This dissertation presents three new approaches to the design of phased array antennas in
order to reduce their complexity. The first approach is based on extended resonance …

CMOS spiral inductors have found a broad range of applications in highspeed analog signal
processing and data communications. These applications include bandwidth enhancement …

Single-ended and differential phased array front-ends are developed for Ka-band
applications using a 0.12 mum SiGe BiCMOS process. The phase shifters are based on …

Transmitarrays have been shown to be viable architectures for achieving high-directivity
reconfigurable apertures. Two reconfigurable transmitarray elements, using single and …

This paper presents the design and analysis of an improved wideband in-phase/quadrature
(I/Q) network and its implementation in a wideband phased-array front-end. It is found that …

A fully integrated CMOS ultra-wideband 4-channel timed array receiver for high-resolution
imaging application is presented. A path-sharing true time delay architecture is implemented …