DC-Offset Compensation Concept for Monostatic FMCW Radar Transceivers
- 3 August 2010
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Microwave and Wireless Components Letters
- Vol. 20 (9) , 525-527
- https://doi.org/10.1109/lmwc.2010.2056359
Abstract
A novel dc-offset compensation technique for monostatic frequency-modulated continuous-wave (FMCW) transceivers is presented. This approach uses the intermediate frequency (IF) port of the active direct-conversion mixer to access its collector resistors. Additional external variable resistors in parallel connection can vary the total load resistance in each branch and hence compensate or generate a dc-offset voltage at the output. Since the wiring is located on the low-frequency side of the mixer, the variable resistors can also be external (off-chip), which offers great flexibility and eases application. The concept was successfully tested with an integrated 77 GHz automotive radar mixer fabricated in a 200 GHz fT Silicon Germanium (SiGe) bipolar technology.Keywords
This publication has 4 references indexed in Scilit:
- DC-offset compensation of a 77 GHz monostatic FMCW-radar transceiver for automotive applicationPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2008
- A Fully-Automated Measurement System for 77-GHz Mixers2007 IEEE Instrumentation & Measurement Technology Conference IMTC 2007, 2007
- Tx Leakage Cancellers for 24 GHz and 77 GHz Vehicular Radar ApplicationsPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2006
- Design considerations for direct-conversion receiversIEEE Transactions on Circuits and Systems II: Analog and Digital Signal Processing, 1997