Oscillators – Solid state active element oscillator – Transistors
Reexamination Certificate
2006-12-26
2006-12-26
Mis, David (Department: 2817)
Oscillators
Solid state active element oscillator
Transistors
C331S1170FE, C331S17700V, C331S179000
Reexamination Certificate
active
07154349
ABSTRACT:
A multi-band VCO employs a coupled-inductor based resonator having N≧2 ports. Each port has an inductor and at least one capacitor. The N inductors for the N ports are magnetically coupled. The inductors/ports may be selectively enabled and disabled to allow the VCO to operate at different frequency bands. The capacitor(s) for each port may include one or more fixed capacitors, one or more variable capacitors (varactors), one or more switchable capacitors, or any combination of fixed, variable, and switchable capacitors. The switchable capacitors (if any) in the enabled ports may be selectively enabled and disabled to vary the VCO oscillation frequency. The varactors (if any) in the enabled ports can vary the oscillation frequency to lock the VCO to a desired frequency. The multi-band VCO may be implemented with various oscillator topologies and can replace multiple single-band VCOs.
REFERENCES:
patent: 2647252 (1953-07-01), Moore, Jr.
patent: 2994864 (1961-08-01), Van Allen
patent: 3001129 (1961-09-01), Knowles
patent: 3229229 (1966-01-01), Tozzi
patent: 3289074 (1966-11-01), Jones
patent: 3413560 (1968-11-01), Van Aurooy
patent: 3509485 (1970-04-01), Czerny
patent: 6121850 (2000-09-01), Ghoshal
patent: 6133798 (2000-10-01), Nagano et al.
patent: 6215374 (2001-04-01), Petrovic
patent: 6621365 (2003-09-01), Hallivuori et al.
patent: 6791423 (2004-09-01), Leenaerts et al.
patent: 6943635 (2005-09-01), Kaltenecker
patent: 2002/0109556 (2002-08-01), Leenaerts et al.
patent: 2004/0196110 (2004-10-01), Boccuzzi et al.
patent: 2006/0033587 (2006-02-01), Cabanillas
patent: 03005559 (2003-01-01), None
Straayer et al. A Low-Noise Transformer-Based 1.7GHz CMOS VCO, ISSCC 2002; Session 17, Advanced RF Techniques, 17.1; EECS Department, University of Michigan.
Brown Charles D.
Chen Alex C.
Mis David
Qualcomm Incorporated
Wadsworth Philip R.
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