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首页> 外文期刊>Microwave and Wireless Components Letters, IEEE >DC-Offset Compensation Concept for Monostatic FMCW Radar Transceivers
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DC-Offset Compensation Concept for Monostatic FMCW Radar Transceivers

机译：单基地FMCW雷达收发器的直流偏移补偿概念

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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 $f_{T}$ Silicon Germanium (SiGe) bipolar technology.
机译：提出了一种用于单频调频连续波（FMCW）收发器的新颖的直流偏移补偿技术。这种方法使用有源直接变频混频器的中频（IF）端口访问其集电极电阻。并联的附加外部可变电阻器可以改变每个分支中的总负载电阻，从而补偿或在输出端产生直流偏移电压。由于布线位于混频器的低频侧，因此可变电阻器也可以位于外部（片外），这提供了极大的灵活性并简化了应用。该概念已通过采用200 GHz硅锗（SiGe）双极技术制造的集成77 GHz汽车雷达混频器成功进行了测试。

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