DocumentCode :
1837914
Title :
Ka-band direct digital receiver using 0.25 /spl mu/m GaAs PHEMTs
Author :
Ovidiu Tatu, S. ; Moldovan, E. ; Brehm, G. ; Ke Wu ; Bosisio, R.G.
Author_Institution :
Dept. de Genie Electr., Ecole Polytech. de Montreal, Que., Canada
fYear :
2002
fDate :
3-4 June 2002
Firstpage :
155
Lastpage :
158
Abstract :
A new direct conversion wideband (26 GHz - 28.5 GHz) six-port millimeter wave receiver using MMIC technology is proposed to meet the needs of mass-market wireless communications. This six-port receiver is designed to operate without the need for precise power reading and the use of digital signal processor (DSP) that is usually required in other receivers. The proposed receiver architecture is chosen to satisfy requirements of hardware receiver used in QPSK communications. The receiver contains one MMIC module consisting of a wide band six-port junction with four RF Schottky detectors, a receiver front-end and a base hand module composed of video amplifiers and I&Q decoder. The maximum bit rate, at least 100 Mbs, is determined solely by the limiting speed of ancillary video amplifiers and analogue decoder. This new hardware receiver is proposed as a robust, rugged, low cost receiver for use in wide Ka-band wireless mass market QPSK communications such as LMDS services that are a prime example of communication equipment requiring such receivers. BER results are presented in the presence of noise and local oscillator (LO) phase shift.
Keywords :
HEMT integrated circuits; III-V semiconductors; S-parameters; decoding; digital radio; field effect MIMIC; gallium arsenide; quadrature phase shift keying; video amplifiers; 0.25 micron; 100 Mbit/s; 26 to 28.5 GHz; GaAs; Ka-band; LMDS services; MMIC technology; PHEMTs; QPSK communications; RF Schottky detectors; analogue decoder; ancillary video amplifiers; base band module; bit rate; direct digital receiver; hardware receiver; phase shift; receiver architecture; receiver front-end; six-port millimeter wave receiver; Decoding; Gallium arsenide; Hardware; MMICs; Millimeter wave communication; Millimeter wave technology; PHEMTs; Quadrature phase shift keying; Radiofrequency amplifiers; Wideband;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Radio Frequency Integrated Circuits (RFIC) Symposium, 2002 IEEE
Conference_Location :
Seattle, WA, USA
ISSN :
1529-2517
Print_ISBN :
0-7803-7246-8
Type :
conf
DOI :
10.1109/RFIC.2002.1011945
Filename :
1011945
Link To Document :
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