Title :
A 77 GHz GaAs pHEMT transceiver MMIC for automotive sensor applications
Author :
Tessmann, A. ; Verweyen, L. ; Neumann, N. ; Massler, H. ; Haydl, W.H. ; Hulsmann, A. ; Schlechtweg, M.
Author_Institution :
Fraunhofer Inst. for Appl. Solid State Phys., Freiburg, Germany
Abstract :
A very compact coplanar transceiver MMIC using space-saving dual-gate pHEMTs has been developed for an FMCW radar system. The chip consists of a two-stage medium power amplifier, a single-ended resistive mixer, a rat-race coupler and a single-stage high-gain amplifier, based on 0.15 /spl mu/m GaAs pHEMT technology. An output power of 10 dBm and a conversion loss of 1.5 dB were obtained at 77 GHz. The over-all chip size is only 1.75/spl times/1.75 mm/sup 2/.
Keywords :
CW radar; FM radar; HEMT integrated circuits; III-V semiconductors; MMIC mixers; MMIC power amplifiers; automotive electronics; field effect MIMIC; gallium arsenide; road vehicle radar; transceivers; 0.15 micron; 1.5 dB; 77 GHz; FMCW radar system; GaAs; automotive sensor applications; chip size; conversion loss; dual-gate pHEMTs; output power; pHEMT transceiver MMIC; rat-race coupler; single-ended resistive mixer; single-stage high-gain amplifier; two-stage medium power amplifier; Automotive engineering; Gallium arsenide; High power amplifiers; MMICs; PHEMTs; Power amplifiers; Power generation; Space technology; Spaceborne radar; Transceivers;
Conference_Titel :
GaAs IC Symposium, 1999. 21st Annual
Conference_Location :
Monterey, CA, USA
Print_ISBN :
0-7803-5585-7
DOI :
10.1109/GAAS.1999.803759
