Dual-oscillator signal synthesizer having high frequency...

Details Dual-oscillator signal synthesizer having high frequency... Dual-oscillator signal synthesizer having high frequency...

2006-01-31

2006-01-31

Mis, David (Department: 2817)

Oscillators

Automatic frequency stabilization using a phase or frequency...

Plural oscillators controlled

C331S018000, C327S105000, C327S147000, C327S356000

Reexamination Certificate

active

06992531

ABSTRACT:
A signal synthesizer includes a high frequency offset stage having a high frequency offset source and frequency translation element in the feedback path of a dual-oscillator offset loop synthesizer. The signal synthesizer achieves low phase noise via noise cancellation when used to provide the first local oscillator of a spectrum analyzer and when the second local oscillator of the spectrum analyzer provides the high frequency offset source to the signal synthesizer.

REFERENCES:
patent: 4673891 (1987-06-01), Remy
patent: 6373344 (2002-04-01), Mar
patent: 6806746 (2004-10-01), Mar
patent: 1 395 604 (1971-06-01), None
Agilent Technologies, Inc. U.S. Appl. No. 10/633,225 filed Jul. 31, 2003; “Direct Frequency Synthesizer For Offset Loop Synthesizer”; Inventor—Wing J. Mar.

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