A single chip image rejecting downconverter for the 2.44 GHz band

Author

Baumberger, W.

Author_Institution

Swiss Federal Inst. of Technol., Zurich, Switzerland

fYear

1993

fDate

10-13 Oct. 1993

Firstpage

37

Lastpage

40

Abstract

The design and fabrication of a single chip image rejecting downconverter for the 2.44 GHz-frequency band is presented. The chip comprises an RF preamplifier, a phasing type image reject mixer, an IF preamplifier, a two-stage ring oscillator-type VCO and a prescaler. Except for the power supply and the frequency tuning voltage, no external components are required for basic operation. Chip size and power consumption are 3 mm/sup 2/ and 0.5 W, respectively. An image rejection of 33 dB is achieved over a 130 to 260 MHz IF bandwidth. With a simple input symmetrizing and matching network, a conversion gain of 34 dB and a noise figure of 6.5 dB are measured. The device is a prototype and has been produced with Triquint´s QED/A enhancement-depletion process using standard design rules.<>

Keywords

III-V semiconductors; UHF amplifiers; UHF frequency convertors; UHF integrated circuits; UHF mixers; UHF oscillators; differential amplifiers; gallium arsenide; intermediate-frequency amplifiers; preamplifiers; prescalers; voltage-controlled oscillators; IF preamplifier; QED/A enhancement-depletion process; RF preamplifier; conversion gain; design; fabrication; image rejecting downconverter; noise figure; phasing type image reject mixer; power consumption; prescaler; single chip; two-stage ring oscillator-type VCO; Bandwidth; Energy consumption; Fabrication; Impedance matching; Power supplies; Preamplifiers; Radio frequency; Tuning; Voltage; Voltage-controlled oscillators;

fLanguage

English

Publisher

ieee

Conference_Titel

Gallium Arsenide Integrated Circuit (GaAs IC) Symposium, 1993. Technical Digest 1993., 15th Annual

Conference_Location

San Jose, CA, USA

Print_ISBN

0-7803-1393-3

Type

conf

DOI

10.1109/GAAS.1993.394505

Filename

394505