The Square Kilometre Array (SKA) project is an international effort to build the world's largest
radio telescope, enabling science with unprecedented detail and survey speed. The project …

In this communication, we present a new optimization and realization of a quadruple-ridge
flared horn (QRFH) as a feed for reflector antennas of the square kilometer array (SKA) …

Antenna noise temperature calculation for a reflector antenna system can be a
computationally expensive operation if the structure is electrically large. Several …

We present the design, manufacture, and measured performance of a dielectrically loaded
quad-ridge flared horn (QRFH) feed for decade bandwidth radio astronomy application. The …

This communication proposes a compact, high performance, quadruple-ridged flared horn
operating from 8 to 50 GHz. A prototype fed by two coaxial connectors has been designed …

Advances in wideband feed technology for radio telescopes enable high sensitivity
observations over large bandwidths. The wideband quad-ridge flared horn (QRFH) feed …

Reflector-based radio telescopes are used as tools for observations in both radio astronomy
and space geodesy. To observe the weak sources in space, highly sensitive receivers …

We present the design of an ultra-wideband dielectrically loaded Quad-Ridge Flared Horn
(QRFH) feed for the European Very Long Baseline Interferometry Network (EVN) developed …

A sinuous antenna, projected onto a pyramidal structure, is presented as a possible wide
band single pixel feed candidate for the Square Kilometre Array reflector system. Simulated …

This paper presents a surrogate based optimization strategy for the rapid design of reflector
antenna feeds. A multi-fidelity optimization scheme is employed, where the fast coarse …