Receiver having a local oscillator first synchronized to a reference frequency and then to a received signal
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United States of America Patent
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Feb 1, 1994
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N/A
app pub date -
Jun 5, 1992
filing date -
Jun 8, 1991
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Abstract
A receiver array in accordance with the reception principle of synchronous demodulation, in which a controllable oscillator array is pre-synchronized to a set value for the oscillator frequency by a digital first control circuit having a reference frequency source during a pre-synchronization phase, and a heterodyne signal derived from the oscillator frequency is then synchronized with phase locking to the received useful signal by switching the oscillator control input to an analog second control circuit.
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