A down-conversion I/Q-mixer for a W-CDMA zero-IF receiver implemented in a 75 GHz f/sub t/ bipolar SiGe technology is reported. Including I/Q-generation and biasing, it consumes a supply current of 18 mA from a 2.7 V supply. A voltage gain of 10.2 dB and an IIP3 of 8 dBm have been achieved. Using frequency division to derive the I- and Q-phases for the local oscillator signals results in LO-RF leakage lower than -68 dBm and an IIP2 better than 56 dBm. DC offsets at the I and Q mixer baseband outputs are typically below 5 mV.
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机译：据报道，采用75 GHz f / sub t /双极SiGe技术实现的W-CDMA零中频接收机的下变频I / Q混频器。包括I / Q生成和偏置，它从2.7 V电源消耗的电源电流为18 mA。实现了10.2 dB的电压增益和8 dBm的IIP3。使用分频来导出本地振荡器信号的I相和Q相将导致LO-RF泄漏低于-68 dBm，IIP2高于56 dBm。 I和Q混频器基带输出的直流失调通常低于5 mV。
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