Telecommunications – Receiver or analog modulated signal frequency converter – Local control of receiver operation
Patent
1986-02-28
1988-03-15
Griffin, Robert L.
Telecommunications
Receiver or analog modulated signal frequency converter
Local control of receiver operation
455173, 455182, 455183, H04B 116
Patent
active
047318740
ABSTRACT:
A radio receiver has a first radio receiving part which receives the signal of the desired radio broadcasting station, a first receiving field intensity detector which detects the receiving field intensity of the desired signal received by the first radio receiving part, a second radio receiving part which receives an interference signal having the frequency adjacent to the desired signal frequency, a second receiving field intensity detector which detects the receiving field intensity of the interference signal received by the second radio receiver, a receiving frequency controller which generates a control signal for controlling the frequency of the desired signal received by the first radio receiving part in such a direction to become more remote from the disturbing signal frequency based on the receiving field intensities of the desired signal and disturbing signal detected by the first and second receiving field intensity detectors, and a local oscillation frequency controller which controls a local oscillation frequency of the first radio receiving part based on the control signal.
Alpine Electronic, Ltd.
Griffin Robert L.
Seidenglanz Elissa
Shoup Guy W.
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