Programmable nonreciprocal meta-prism

S Taravati, GV Eleftheriades - Scientific Reports, 2021‏ - nature.com
Optical prisms are made of glass and map temporal frequencies into spatial frequencies by
decomposing incident white light into its constituent colors and refract them into different …

Wideband inter-beam interference cancellation for mmW/sub-THz phased arrays with squint

MY Javed, N Tervo, ME Leinonen… - IEEE Transactions on …, 2023‏ - ieeexplore.ieee.org
As relative bandwidth increases, beam squint, ie, frequency dependent directivity, limits the
wideband performance of phase-shifter steered arrays. This effect is already notable in 5G …

Novel application of the hollow dielectric resonator antenna as a packaging cover

EH Lim, KW Leung - IEEE Transactions on Antennas and …, 2006‏ - ieeexplore.ieee.org
The dual functions of the rectangular hollow dielectric resonator antenna (DRA) as an
antenna and a packaging cover are investigated. The design methodology is discussed, and …

Noise cancellation effects in integrated photonics with Wilkinson power dividers

A Ortega-Gomez, O Hernández, D Oña… - ACS …, 2023‏ - ACS Publications
Wilkinson power dividers (WPDs) are a popular element in RF and microwave technologies
known for providing isolation capabilities. However, the benefits that WPDs could offer to …

Noise figure of an active antenna array and receiver system

KF Warnick - IEEE Antennas and Wireless Propagation Letters, 2022‏ - ieeexplore.ieee.org
Progress has been made in extending traditional antenna terms to complex phased array
receivers, but a satisfactory definition for the noise figure of an active antenna and receiver …

A four-channel bi-directional CMOS core chip for X-band phased array T/R modules

S Sim, B Kang, JG Kim, JH Chun… - 2015 IEEE Radar …, 2015‏ - ieeexplore.ieee.org
This paper presents a four-channel bi-directional core chip in 0.13 um CMOS for X-band
phased array Transmit/Receive (T/R) module. Each channel consists of a 5-bit step …

Spatial interference reduction by subarray stacking in large two-dimensional antenna arrays

MY Javed, N Tervo, ME Leinonen… - IEEE Transactions on …, 2020‏ - ieeexplore.ieee.org
This article proposes a systematic approach for stacking uniform linear arrays (ULAs) of
different sizes to reduce sidelobes and form nulls to the radiated beam pattern. In sidelobe …

Specification, verification, and calibration of active electronically scanned array (AESA) antennas

M Lisi - 2021 4th International Symposium on Advanced …, 2021‏ - ieeexplore.ieee.org
Active Electronically Scanned Arrays (AESA's) have gained over the last years an increasing
interest and utilization, for both space and ground applications. On board satellites, such …

Orthogonal Thermal Noise and Transmission Signals: A New Coherent Perfect Absorption's Feature

D Oña, A Ortega-Gomez, O Hernández, I Liberal - Physical Review Letters, 2024‏ - APS
Coherent perfect absorption (CPA) is an interference process associated with the zeros of
the scattering matrix of interest for optical computing, data processing, and sensing …

An AESA antenna comprising an RF feeding network with strongly coupled antenna ports

MJP Porras, T Bertuch, C Loecker… - … on Antennas and …, 2014‏ - ieeexplore.ieee.org
This paper presents an S-band AESA antenna with inexpensive T/R-modules and a novel
RF feeding network operation technique. The antenna ports of the front-end's feeding …