Voltage controlled oscillator having digitally controlled...

Oscillators – Automatic frequency stabilization using a phase or frequency... – Particular frequency control means

Reexamination Certificate

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C331S057000, C331S17700V, C327S158000, C327S159000

Reexamination Certificate

active

11251467

ABSTRACT:
A VCO has a plurality of MIGFETs coupled to provide phase adjustment in response to receiving digital phase adjustment control signals. The VCO includes a ring oscillator implemented as a plurality of serially coupled inverters. A phase adjustment circuit is coupled to the output of each inverter. The phase adjustment circuit of each stage comprises a predetermined number of MIGFETs. In one embodiment, half of the MIGFETs are used to speed-up the phase/frequency of the OUTPUT signal a predetermined amount in response to receiving speed-up control signals. The other half of the MIGFETs are used to slow-down the phase/frequency of the OUTPUT signal a predetermined amount in response to the receiving slow-down control signals. The VCO requires relatively less surface area, is simple, and is easy to implement.

REFERENCES:
patent: 4872010 (1989-10-01), Larson et al.
patent: 5144170 (1992-09-01), Parker
patent: 5463353 (1995-10-01), Countryman et al.
patent: 5675341 (1997-10-01), Vallancourt et al.
patent: 5912591 (1999-06-01), Yamada
patent: 5936433 (1999-08-01), Holloway
patent: 6222395 (2001-04-01), Bertin et al.
patent: 6462527 (2002-10-01), Maneatis et al.
patent: 6677569 (2004-01-01), Beusch
patent: 6720812 (2004-04-01), Tumer et al.
patent: 6756826 (2004-06-01), Klein et al.
patent: 6759875 (2004-07-01), Mano et al.
patent: 6774733 (2004-08-01), Arima
patent: 6842136 (2005-01-01), Agarwal et al.
patent: 6969656 (2005-11-01), Du et al.
patent: 6972702 (2005-12-01), Moon
Mathew et al, “Multiple Independent Gate Field Effect Transistor (MIGFET)—Multi-Fin RF Mixer Architecture, Three Independent Gates (MIGFET-T) Operation and Temperature Characteristics”; 2005 Symposium on VLSI Technology Digest of Technical Papers, pp. 200-201.
Mathew et al; “CMOS Vertical Multiple Independent Gate Field Effect Transistor (MIGFET)”; SOI Conference 2004; 4 pp.
Leme et al.; “High Performance CMOS Comparator for Analogue-Digital Convertors”; Electronics Letters; Sep. 20, 1990; 2pp; vol. 26, Issue 20; IEEE.
Mathew et al; Abstract: “Multiple Independent Gate Field Effect Transistor (MIGFET)—Device, Process, Applications ”; 207thECS Conference; May 15-20, 2005, Quebec City, Canada, 1 pgs.
Mathew et al; “Multiple Independent Gate Field Effect Transistor (MIGFET)—Device, Process, Applications ”; 207thECS Conference; May 15-20, 2005, Quebec City, Canada, 10pg.

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