Radio receiver with a high speed and accurate search operation a

Details Radio receiver with a high speed and accurate search operation a Radio receiver with a high speed and accurate search operation a

1994-12-14

1996-11-12

Pham, Chi H.

Telecommunications

Receiver or analog modulated signal frequency converter

Signal selection based on frequency

4551651, 4551681, 4551832, H04B 116

Patent

active

055749950

ABSTRACT:
A controller shifts the frequency of the local oscillator with a frequency shift circuit so that as many channels to be scanned as possible will be included within specified bandwidths, detects a desired received signal by scanning each of the specified bandwidths with the shifted frequency, scans each channel within the bandwidth where the desired received signal was detected, and changes the frequency of the local oscillator or shifts the frequency of the local oscillator with the frequency shift circuit so that the desired channel frequency identified above will be at the center of said bandwidth.

REFERENCES:
patent: 4451850 (1984-05-01), Kamemoto
patent: 4763195 (1988-08-01), Tults
patent: 5199109 (1993-03-01), Baker

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