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Coplanar integrated mixers for 77-GHz automotive applications

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5 Author(s)
Verweyen, L. ; Fraunhofer Inst. for Appl. Solid State Phys., Freiburg, Germany ; Massler, H. ; Neumann, M. ; Schaper, U.
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For integration in receivers at 77 GHz, three passive mixers, a balanced diode mixer, a single ended and a balanced resistive mixer, as well as an active single-ended gate mixer have been realized in coplanar 0.15-μm PM-HEMT technology on GaAs. The passive mixers achieved conversion losses of about 9 dB. The resistive mixers required an LO power of only 3 dBm and the diode mixer 10 dBm for optimum conversion. The gate mixer obtained a conversion gain of 1 dB for an LO power of 6 dBm, but showed higher sensitivity to the IF load.

Published in:

Microwave and Guided Wave Letters, IEEE  (Volume:8 ,  Issue: 1 )