| 摘要 |
<p>IMPROVEMENTS IN OR RELATING TO CORRELATION CIRCUITS A circuit for cancelling unwanted components in two received signals has a first input for one of the signals and a second input for the other. The first input is connected by a first circuit path to an output and the second input by a second circuit path to an output. Each circuit path has an associated feedback which includes a correlating device which is arranged to receive fractions of both output signals. Each correlating device forms a control signal which is applied to a mixer. Each mixer operates under the control of the control signal to feed to its associated circuit path a signal which tends to cancel the unwanted component.</p> |
