Voltage-control oscillator circuits with combined MOS and...

Details Voltage-control oscillator circuits with combined MOS and... Voltage-control oscillator circuits with combined MOS and...

2008-09-24

2010-02-16

Pascal, Robert (Department: 2817)

Oscillators

Solid state active element oscillator

Transistors

C331S1170FE, C331S17700V, C331S10800D

Reexamination Certificate

active

07663445

ABSTRACT:
A voltage controlled oscillator includes: a first merged device having a first bipolar transistor and a first MOS transistor, the first bipolar transistor having a collector sharing a common active area with a source/drain of the first MOS transistor, and an emitter sharing the common active area with another source/drain of the first MOS transistor, a second merged device having a second bipolar transistor and a second MOS transistor, the second bipolar transistor having a collector sharing a common active area with a source/drain of the second MOS transistor, and an emitter sharing the common active area with another source/drain of the second MOS transistor, and a first inductor connected to both the collector of the first bipolar transistor and a base of the second bipolar transistor.

REFERENCES:
patent: 6970048 (2005-11-01), Devnath et al.
patent: 7034623 (2006-04-01), Khalil
patent: 7145407 (2006-12-01), Jeon et al.
patent: 2007/0105301 (2007-05-01), Chen et al.
Kakani et al., “A 5GHz Series Coupled BiCMOS Quadrature VCO with Wide Tuning Range”, Bipolar/BiCMOS Circuits and Technology Meeting, 2006, Oct. 8-10, 2006, pp. 1-4.
Rofougaran et al., “A 900 MHz CMOS LC-Oscillator with Quadrature Outputs”, Solid-State Circuits Conference, 1996. Digest of Technical Papers. 43rd ISSCC., 1996 IEEE International, Feb. 8-10, 1996, pp. 392-393.

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