| 摘要 |
<p>A mixer circuit directs input signals to an amplifier (16) and a delay unit (18) from which amplified and delayed signals pass to a signal mixer (20) and a correction mixer (24) respectively for mixing with a common local oscillator signal. The signal mixer output signal is connected to an attenuator (30). A subtractor (26) subtracts the correction mixer output signal from the attenuator output signal, which provides a difference signal consisting largely of distortion introduced by amplification and mixing. The difference signal is used to counteract distortion in the signal mixer output signal.</p> |
