Broadband frequency synthesizer

Details Broadband frequency synthesizer Broadband frequency synthesizer

1997-08-01

2000-12-19

Hunter, Daniel S.

Telecommunications

Receiver or analog modulated signal frequency converter

Signal selection based on frequency

4551761, 4551803, 375376, H04B 116

Patent

active

061636843

ABSTRACT:
A broadband frequency synthesizer including a first local oscillator signal generated in a first phase locked loop. A second local oscillator signal is generated in a second phase locked loop. Third and fourth phase locked loops provide inputs to the second phase locked loop to control the second local oscillator frequency. The system and method provides for small step size tuning while maintaining wide phase lock loop bandwidth.

REFERENCES:
patent: 3769589 (1973-10-01), Buntschuh
patent: 4061980 (1977-12-01), Sato
patent: 4223406 (1980-09-01), Someno
patent: 4703520 (1987-10-01), Rozanski et al.
patent: 5448763 (1995-09-01), Gillig
patent: 5471652 (1995-11-01), Hulkko
patent: 5717730 (1998-02-01), Parkash et al.
patent: 5752174 (1998-05-01), Matai et al.
patent: 5752175 (1998-05-01), Roullet et al.

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