The present-day ocean remote sensing instruments that operate at low microwave
frequencies are limited in spatial resolution and do not allow for monitoring of the coastal …

Phased array feeds (PAFs) for large diameter single dish radio telescopes offer the
capability for multiple simultaneous beam formation and wide field-of-view surveys. An L …

We have developed a fully cryogenically cooled phased array feed (PAF) prototype camera
and tested it on the Arecibo Radio Telescope in the summer of 2013. The camera consists of …

PHased Arrays for Reflector Observing Systems (PHAROS) is a C-band (4–8 GHz) Phased
Array Feed (PAF) receiver designed to operate from the primary focus of a large single-dish …

This chapter is an account of the creativity of a host of engineers and scientists to build a
groundbreaking radio telescope with the performance needed to extract the scientific …

The Five‐Hundred‐Meter Aperture Spherical Telescope (FAST) is a Chinese megascience
project that aims to build the largest single dish radio telescope in the world. Given its …

A cryogenic phased array feed operating at L-band is in development for the Green Bank
Telescope (GBT). The feed consists of electrically small feed elements optimized for active …

We have developed a fully cryogenically cooled, 19-element phased array feed (PAF),
prototype camera for the Arecibo Radio Telescope. The 19 PAF elements are dual polarized …

Among the research topics needing to be addressed to further the development of phased
array feeds (PAFs) for radio astronomical use are challenges associated with calibration …

In order to ensure higher accuracy and better electrical performance of large antennas in
future, this paper does some research for deformation of antenna's reflector: modeling for …