A low-current Ku-band GaAs monolithic image rejection down-converter

Author

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

Author_Institution

Sharp Corp., Nara, Japan

Volume

27

Issue

10

fYear

1992

fDate

10/1/1992 12:00:00 AM

Firstpage

1448

Lastpage

1451

Abstract

A single-chip image rejection downconverter has been designed, fabricated. and tested for broadcast satellite receivers operating in the 11.7- to 12.2-GHz range. The downconverter consists of an RF low-noise amplifier (LNA), a filter-type image rejection mixer (IRM), and an intermediate frequency amplifier (IFA). It receives 11.7- to 12.2-GHz RF signals and down converts to 1.0- to 1.5-GHz IF signals with an external local oscillator. Since the filter integrated on the downconverter produces an image rejection of more than 30 dB, the downconverter requires no off-chip circuits for the image rejection. A conversion gain of 37±1 dB and a noise figure of less than 3.5 dB have been achieved over the RF frequency range. The current dissipation is only 40 mA, and the chip size is 2.8 mm×2.8 mm×0.45 mm

Keywords

III-V semiconductors; MMIC; direct broadcasting by satellite; frequency convertors; gallium arsenide; radio receivers; satellite ground stations; 1 to 1.5 GHz; 11.7 to 12.2 GHz; 3.5 dB; 37 dB; 40 mA; DBS; GaAs; broadcast satellite receivers; external local oscillator; filter-type; image rejection downconverter; image rejection mixer; intermediate frequency amplifier; low-current; low-noise amplifier; single-chip; Filters; Image converters; Local oscillators; Low-noise amplifiers; Mixers; RF signals; Radio frequency; Radiofrequency amplifiers; Satellite broadcasting; Testing;

fLanguage

English

Journal_Title

Solid-State Circuits, IEEE Journal of

Publisher

ieee

ISSN

0018-9200

Type

jour

DOI

10.1109/4.156452

Filename

156452