A Wideband Cryogenic Phased Array Receiver for Radio Astronomy

Phased array receivers can dramatically increase the utility of existing large aperture radio telescopes. Here we present the design and measured performance of a cryogenic phased array receiver for the Parkes radio telescope. The receiver covers the 0.7GHz to 1.95GHz frequency range and exhibits noise performance equivalent to similar single pixel receivers but with a larger field of view.