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A 60GHz Doppler radar for short-range presence detection applications in the unlicensed 60GHz band is described. The 1.1times2.1 mm2 SiGe:C BiCMOS IC includes a 60GHz VCO, a polyphase filter for quadrature signal generation, a low-noise amplifier with current reuse quadrature down-conversion mixer and a power amplifier. The VCO can be tuned from 59.5-61.5GHz. The receiver quadrature accuracy is better...
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