DC-Offset Compensation Concept for Monostatic FMCW Radar Transceivers

被引：8

作者：

Jahn, Martin ^{[1
]}

Wagner, Christoph ^{[2
]}

Stelzer, Andres ^{[1
,3
]}

机构：

[1] Univ Linz, Inst Commun Engn & RF Syst, A-4040 Linz, Austria

[2] DICE GmbH&Co KG, A-4040 Linz, Austria

[3] Univ Linz, Christian Doppler Lab Integrated Radar Sensors, A-4040 Linz, Austria

来源：

IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS | 2010年 / 20卷 / 09期

关键词：

DC-offset compensation; frequency-modulated continuous-wave (FMCW) radar; millimeter wave circuits; SiGe technology; zero-intermediate frequency (IF);

D O I：

10.1109/LMWC.2010.2056359

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

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 Silicon Germanium (SiGe) bipolar technology.

引用

页码：525 / 527

页数：3

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