This article describes the design of the 18 m shaped offset Gregorian reflector system for the
Next Generation Very Large Array (ngVLA) radio interferometer and the associated 1.66: 1 …

Calibrating for the radiation pattern of a multi-beam Phased array feed (PAF) based radio
telescope largely depends on the accuracy of the pattern model, and the availability of …

We have developed, manufactured, and tested a new feed design for interferometric radio
telescopes with “large-N, small-D” designs. Such arrays require low-cost and low-complexity …

A novel beam expansion method is presented that requires employing only a few
Characteristic Basis Function Patterns (CBFPs) for the accurate prediction of antenna beam …

The design methodology of the MeerKAT L-band feed which consists of a wide flare angle
axially corrugated conical horn, a horn matching section and a compact orthomode …

This paper provides an overview of MeerKAT, the South African Square Kilometre Array
(SKA) precursor array that will form an integral part of phase 1 of the SKA. The telescope is …

Towards an optics design for the SKA Page 1 978-1-4673-5943-6/13/$31.00 ©2013 IEEE
Towards an optics design for the SKA IP Theron, R. Lehmensiek EMSS Antennas (Pty) Ltd …

Calibrating for the radiation pattern of a multi-beam Phased Array Feed (PAF) based radio
telescope largely depends on the accuracy of the pattern model, and the availability of …

Until recently, full-wave electromagnetic (EM) primary beam simulation results for MeerKAT's
offset-Gregorian reflector antennas in-band (856–1711 MHz) differed systematically and …

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