Widely tuneable and fully differential LC oscillator...

Details Widely tuneable and fully differential LC oscillator... Widely tuneable and fully differential LC oscillator...

2006-07-11

2006-07-11

Chang, Joseph (Department: 2817)

Oscillators

Solid state active element oscillator

Transistors

C331S1170FE

Reexamination Certificate

active

07075380

ABSTRACT:
An inductor-capacitor voltage controlled oscillator is implemented using an active inductor. The active inductor may use bipolar technology or CMOS technology. The VCO with an active inductor offers a more compact design and is useable with flip chip technology. The active inductor may be implemented in bipolar junction or complementary metal oxide semiconductor technology. The configuration of the voltage controlled oscillator with an active inductor of the present invention is fully differential and fully symmetric.

REFERENCES:
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patent: 5821825 (1998-10-01), Kobayashi
patent: 5850163 (1998-12-01), Drost et al.
patent: 6107893 (2000-08-01), Forbes
VHF CMOS integrated active inductor; A. Thanachayanont and A. Payne; Electronics Letters, May 23, 1996, vol. 32, No. 11.
2.5 GHZ Second- and Fourth-Order Inductorless RF Bandpass Filters; Apinunt Thanachayanont; King Mongkut's Institute of Technology.
A Sixth-Order UHF Bandpass Filter Using Silicon Bipolar Active Inductors; Choon Haw Leong and Gordon W. Roberts; Microelectronics and Computer Systems Laboratory; McGill University Jun. 1998.
Study and Simulation of CMOS LC Oscillator Phase Noise and Jitter; Michael S. McCorquodale, Mei Kim Ding and Richard B. Brown; Department of Electrical Engineering and Computer Science; Solid State Electronics Laboratory; University of Michigan.

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