Ultra-wideband (UWB) phased array antennas are essential for radar, communication, and
Electronic Warfare (EW) applications. Systems can operate over wide-band coverage. The …

In order to meet the requirements of the new generation of radio telescopes, we have
developed a new topology called DYQSA, which stands for DYson Quad-Spiral Array. The …

This paper presents a super-wideband multiple-input multiple-output (SWB MIMO) antenna
with low profile, low mutual coupling, high gain, and compact size for microwave and …

Dielectric resonator antennas have been demonstrated to be an efficient radiator, especially
with the possibility of fabricating it at low cost based on 3-D printing technologies. However …

A broadband dual-polarized crossed dipole antenna is proposed in this paper. To achieve a
wide impedance bandwidth and low-profile configuration, a novel bow-tie balun is applied to …

This doctoral thesis is divided into three principal parts where each one is corresponding to
one topology of radio astronomy receivers (direct detection, down-conversion, and up …

Abstract 5G and future mobile communications increasingly emphasize massive Multiple-
Input Multiple-Output (MIMO) technology to meet the demanding requirements for higher …

New radiometer technology is a key enabling factor for the upcoming new generation of
space missions; earth observation applications, with the use of cubesats and nanosatellites …

A complete reflector antenna architecture solution has been developed for Cryorad mission
operating from 400 MHz to 2 GHz. This paper analyzes the antenna feed requirements and …

This paper presents the design of an updated version of the dual polarized ultra wideband
feed system for covering the new VGOS (VLBI Global Observation System). This feed system …