Title :
Broadband high frequency low noise amplifiers for connected phased array feeds
Author :
Ranga, Yogesh ; Shaw, Robert D. ; Hay, Stuart G.
Author_Institution :
Comput. Inf., CSIRO, Marsfield, NSW, Australia
Abstract :
A low noise amplifier (LNA) with 30 K noise temperature over a wide frequency range from 0.9 to 3.5 GHz is presented. The LNA to be described is suitable for high frequency connected arrays such as Phased Array Feeds (PAFs) operating in the 0.5 to 4 GHz frequency range. The LNA is implemented with unpackaged transistors. It combines single ended configurations to form a balanced amplifier with differential signal-and noise-match impedances in the order of 300Ω. Modeled results show a noise temperature of 48 K over the 0.5 to 4.0 GHz band for 150O input impedance.
Keywords :
UHF antennas; antenna feeds; antenna phased arrays; broadband antennas; low noise amplifiers; microwave antenna arrays; transistors; LNA; broadband high frequency low noise amplifiers; connected phased array feeds; frequency 0.5 GHz to 4 GHz; frequency 0.9 GHz to 3.5 GHz; high frequency connected arrays; input impedance; noise temperature; phased array feeds; signal-and noise-match impedances; temperature 30 K; temperature 48 K; Arrays; Feeds; Impedance; Impedance matching; Noise; Stability analysis; Thermal stability;
Conference_Titel :
Antennas and Propagation in Wireless Communications (APWC), 2014 IEEE-APS Topical Conference on
Conference_Location :
Palm Beach
Print_ISBN :
978-1-4673-5690-9
DOI :
10.1109/APWC.2014.6905590
