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

fYear

2014

fDate

3-9 Aug. 2014

Firstpage

852

Lastpage

855

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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/APWC.2014.6905590

Filename

6905590