A low current GaAs monolithic image rejection downconverter for X-band broadcast satellite applications

Author

Yoshimasu, Toshihiko ; Sakuno, Keiichi ; Matsumoto, Nobuyuki ; Suematsu, Eiji ; Tsukao, Toshiya ; Tomita, Takashi

Author_Institution

Sharp Corp., Nara, Japan

Volume

40

Issue

12

fYear

1992

fDate

12/1/1992 12:00:00 AM

Firstpage

2433

Lastpage

2438

Abstract

The design, fabrication, and performance of a fully integrated X-band monolithic image rejection downconverter are described. The downconverter consists of a low-noise amplifier, an image rejection mixer, and an IF amplifier. The downconverter receives RF signals between 11.7 and 12.3 GHz and converts them down to IF frequency between 1.0 and 1.6 GHz. A conversion gain of 46±1 dB, a noise figure of less than 3.3 dB, and an image rejection of 30 dB have been achieved over the RF frequency range. The chip size of the downconverter is 1.9 mm×2.2 mm, and its current dissipation is only 43 mA. Since the downconverter has sufficient image rejection due to an on-chip bandstop filter, it requires no off-chip circuits. Therefore, the use of this downconverter in X-band broadcast satellite applications will lead to a great reduction in size and current dissipation

Keywords

III-V semiconductors; MMIC; direct broadcasting by satellite; field effect integrated circuits; frequency convertors; gallium arsenide; 1 to 1.6 GHz; 11.7 to 12.3 GHz; 3.3 dB; 43 mA; 46 dB; DBS; GaAs; IF amplifier; LNA; MESFET technology; SHF; X-band; broadcast satellite applications; conversion gain; current dissipation; fabrication; image rejection downconverter; low current type; low-noise amplifier; mixer; on-chip bandstop filter; Fabrication; Frequency conversion; Gain; Gallium arsenide; Image converters; Low-noise amplifiers; Mixers; Noise figure; Radiofrequency amplifiers; Satellite broadcasting;

fLanguage

English

Journal_Title

Microwave Theory and Techniques, IEEE Transactions on

Publisher

ieee

ISSN

0018-9480

Type

jour

DOI

10.1109/22.179913

Filename

179913