Miscellaneous active electrical nonlinear devices – circuits – and – Signal converting – shaping – or generating – Synchronizing
Reexamination Certificate
2007-04-24
2007-04-24
Le, Dinh T. (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Signal converting, shaping, or generating
Synchronizing
C331S016000, C331S018000, C375S365000
Reexamination Certificate
active
11414087
ABSTRACT:
A frequency synthesizer and a method for synthesizing a microwave output signal frequency. The synthesizer uses a reference signal having a variable frequency and accumulation in feedback of a phase locked loop for synthesizing a microwave output frequency. The feedback accumulation rate is derived from a first seed word and the variable reference frequency is derived from a second seed word. A spur suppressor having arithmetic frequency conversions reduces the levels of in-band spurious signals of the variable reference frequency signal in order to reduce the spurious signal levels in the output signal.
REFERENCES:
patent: 3928813 (1975-12-01), Kingsford-Smith
patent: 4516084 (1985-05-01), Crowley
patent: 4609881 (1986-09-01), Wells
patent: 5028887 (1991-07-01), Gilmore
patent: 5038117 (1991-08-01), Miller
patent: 5180993 (1993-01-01), Dent
patent: 5351014 (1994-09-01), Ichiyoshi
patent: 5757239 (1998-05-01), Gilmore
patent: 5859570 (1999-01-01), Itoh et al.
patent: 6198353 (2001-03-01), Janesch et al.
patent: 6366174 (2002-04-01), Berry et al.
Giga-Tronics, Inc.
Gildea David R.
Le Dinh T.
Menlo Patent Agency LLC
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