Radio receiver with automatic adjustment of oscillation frequenc

Details Radio receiver with automatic adjustment of oscillation frequenc Radio receiver with automatic adjustment of oscillation frequenc

1994-07-29

1998-05-12

Urban, Edward F.

Telecommunications

Receiver or analog modulated signal frequency converter

Signal selection based on frequency

455302, 455316, H04B 116

Patent

active

057521743

ABSTRACT:
A radio selective calling receiver having at least two, i.e., a first and a second, local oscillators constituted by respective synthesizers. The oscillation frequencies of the local oscillator are controlled by the apparatus including a frequency calculator for executing frequency calculations according to the received call signal frequency and the oscillation frequencies of the first and second local oscillators so that harmonics of either one of the oscillation frequencies are not interference frequencies to the other oscillation frequency or the received signal frequency.

REFERENCES:
patent: 4512035 (1985-04-01), Victor et al.
patent: 4545072 (1985-10-01), Skutta et al.
patent: 4575761 (1986-03-01), Carlson et al.
patent: 4661842 (1987-04-01), Ishige et al.
patent: 4703520 (1987-10-01), Rozanski, Jr. et al.
patent: 4817195 (1989-03-01), Kubo et al.
patent: 4879758 (1989-11-01), DeLuca et al.
patent: 5390346 (1995-02-01), Marz

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