A 38/76 GHz automotive radar chip set fabricated by a low cost PHEMT technology

Two complex transmit MMICs have been developed for the conversion of a 38 GHz VCO signal to 76 GHz. They consist of a 38 GHz driver amplifier, a frequency doubler and 76 GHz output amplifiers. These MMICs achieve a saturated output power of 14 dBm at 76 GHz and a maximum conversion gain of 9 dB and 12 dB, respectively. The transmit chips are supplemented by a 38 GHz voltage-controlled oscillator with 1.5 GHz tuning bandwidth and 10 dBm output power. The developed MMICs are designed for flip-chip mounting and have been fabricated by a production oriented PHEMT technology. They are suited for low cost automotive radar systems.

[1]  L. Verweyen,et al.  A GaAs HEMT MMIC Chip Set For Automotive Radar Systems Fabricated By Optical Stepper Lithography , 1997, GaAs IC Symposium IEEE Gallium Arsenide Integrated Circuit Symposium. 18th Annual Technical Digest 1996.

[2]  K. Maruhashi,et al.  Miniature Front-End MMIC's for 76-GHz-Band Automotive Radar Applications , 1999, 1999 29th European Microwave Conference.

[3]  D. Pons,et al.  Full MMIC millimeter-wave front end for a 76.5 GHz adaptive cruise control car radar , 1999, 1999 IEEE MTT-S International Microwave Symposium Digest (Cat. No.99CH36282).

[4]  A. Werthof,et al.  High gain PHEMT frequency doubler for 76 GHz automotive radar , 2001, 2001 IEEE MTT-S International Microwave Sympsoium Digest (Cat. No.01CH37157).

[5]  H.J. Siweris,et al.  Monolithic 38 GHz coplanar feedback VCOs fabricated by a production PHEMT technology , 2001, 2001 IEEE MTT-S International Microwave Sympsoium Digest (Cat. No.01CH37157).

[6]  Erwin M. Biebl,et al.  A 76.5 GHz Transceiving Mixer Using Flip-Chip Mounted Silicon Schottky-Diodes for Automotive Radar Applications , 2002, 2002 32nd European Microwave Conference.

[7]  H.J. Siweris,et al.  A monolithic W-band HEMT VCO with feedback topology , 1999, 1999 IEEE MTT-S International Microwave Symposium Digest (Cat. No.99CH36282).

[8]  H.J. Siweris,et al.  A mixed Si and GaAs chip set for millimeter-wave automotive radar front-ends , 2000, 2000 IEEE Radio Frequency Integrated Circuits (RFIC) Symposium Digest of Papers (Cat. No.00CH37096).