High frequency battery saver for a radio receiver

Details High frequency battery saver for a radio receiver High frequency battery saver for a radio receiver

1992-07-02

1995-09-05

Urban, Edward F.

Telecommunications

Transmitter and receiver at separate stations

455343, H04B 116

Patent

active

054487560

ABSTRACT:
A radio receiver receives information on a radio carrier and switches portions of the receiver (12, 14, 18) OFF and ON at a rate greater than the bandwidth of the information, thereby reducing the power consumed by the radio receiver. A signal quality detector (42) determines the amount of distortion introduced by the switching and controls a duty cycle modulator (44) in order to maximize the OFF time while maintaining adequate signal quality. If receiving a data transmission, a synchronizer (46) may be used to synchronize the switching to the bit timing. A transmission gate (24) and capacitor (26) holds the input of filter (32) constant while portions of the receiver are OFF or generating transients due to being switched ON.

REFERENCES:
patent: 4188585 (1980-02-01), Wissel et al.
patent: 4631496 (1986-12-01), Borras et al.
patent: 4811362 (1989-03-01), Yester, Jr. et al.
patent: 4995099 (1991-02-01), Davis
patent: 4996526 (1991-02-01), DeLuca
patent: 5152006 (1992-09-01), Klaus
patent: 5193211 (1993-03-01), Nobusawa
patent: 5193212 (1993-03-01), Son
patent: 5241568 (1993-08-01), Fernandez et al.

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