System and method of frequency synthesis to avoid gaps and...

Details System and method of frequency synthesis to avoid gaps and... System and method of frequency synthesis to avoid gaps and...

2005-11-22

2005-11-22

Tran, Khai (Department: 2637)

Pulse or digital communications

Receivers

Angle modulation

C375S376000

Reexamination Certificate

active

06968020

ABSTRACT:
A system and method for designing a broadband tuner such that VCO pulling is minimized and gaps in frequency coverage are avoided, while total power consumption is reduced, is disclosed. A broadband spectrum is divided into sub-bands and various multipliers to a local oscillator output are introduced. In this fashion, the present invention allows a local oscillator within the broadband tuner to always generate signals that lie outside of the broadband spectrum for a particular broadband application. Additionally, a modulus ratio for a dual modulus prescaler with the local oscillator is maximized, thereby reducing power consumption.

REFERENCES:
patent: 5572168 (1996-11-01), Kasturia
patent: 5789987 (1998-08-01), Mittel et al.
patent: 2003/0050029 (2003-03-01), Kaufmann et al.

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