| 摘要 |
A common channel duplex AM transceiver comprises a pair of multiplicative mixers arranged to receive signals from two sources, receiver aerial means, transmitter aerial means, phase quadrature means connected to provide a phase quadrature relationship, a pair of signal combiners, a pair of low pass filters, a pair of correlator arrangements, the first input port of each correlator arrangement, detector means, the correlator arrangements being operative to correlate signals derived from the low-pass filters with detected signals from oscillator/modulator means and an AM demodulator responsive to signals fed from the low-pass filters.
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