用于天线阻抗失配检测的60GHz 65nm CMOS RMS功率检测器

2009 Proceedings of ESSCIRC Pub Date : 2009-11-10 DOI:10.1109/ESSCIRC.2009.5326027

J. Gorisse, A. Cathelin, A. Kaiser, E. Kerhervé

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引用次数: 35

摘要

本文介绍了一种用于功率放大器调节回路的60GHz 65nm CMOS RMS功率检测器。该测试芯片还集成了一个感应差分传输线上射频电压的差分电容耦合器。该电路在60GHz时显示25dB的线性检测范围，足以覆盖由天线阻抗失配引起的高达7∶1的驻波比，同时仍有10dB的输出功率调节余量。该探测器在1.2V电源下功耗仅为50µA，占用的有效面积为80×80µm2。

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A 60GHz 65nm CMOS RMS power detector for antenna impedance mismatch detection

This paper presents a 60GHz 65nm CMOS RMS power detector to be used in a Power Amplifier regulation loop. The presented test-chip integrates also a differential capacitive coupler sensing the RF voltage on a differential transmission line. The circuit shows 25dB of linear detection range at 60GHz, well enough to cover a VSWR of up to 7∶1 caused by antenna impedance mismatch while still having 10dB margin for output power regulation. The detector consumes only 50µA from a 1.2V power supply and occupies an active area of 80×80µm2.

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2009 Proceedings of ESSCIRC

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