更进一步，控制器可以 被耦合以接收对应于可变阻抗位准的控制信号，并响应于所述控制信 号来控制耦合到混频器的本机振荡器。

Still further, a controller may be coupled to receive a control signalcorresponding to a variable impedance level, and control a local oscillator coupled to the mixer responsive to the control signal.

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从 PSK调制器20输出的连续波在延迟电路26I和延迟电路26Q中被延迟， 然后作为参考信号提供给接收混频器30的每个混频器。

The continuous wave output from the PSK modulator 20 is delayed in delay circuits 26I and 26Q and is then supplied, as a reference signal, to each of mixers of a receiving mixer 30.

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