Harmonic tuning system for radio receivers

Details Harmonic tuning system for radio receivers Harmonic tuning system for radio receivers

1984-08-24

1986-07-01

Ng, Jin F.

Telecommunications

Receiver or analog modulated signal frequency converter

Signal selection based on frequency

455182, 455186, H04B 126

Patent

active

045984220

ABSTRACT:
A harmonic tuning system for multi-band radio receivers in which reference and harmonic signals are generated and utilized in combination with the output frequency of a voltage controlled oscillator to produce control signals indicating tuning to unique radio frequencies. The control signals are utilized to control operation of the voltage controlled oscillator to reach and retain a desired radio frequency channel. Separate sets of reference signals are utilized for each broadcast band to enable the use of common control circuitry for tuning to the different broadcast bands.

REFERENCES:
patent: 3864636 (1975-02-01), Fukuda et al.
patent: 3924192 (1975-12-01), George
patent: 4020419 (1977-04-01), Caspari et al.

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