Switch, negative resistance cell, and differential voltage...

Oscillators – Solid state active element oscillator – Transistors

Reexamination Certificate

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Details

C331S1170FE, C257S401000

Reexamination Certificate

active

07741922

ABSTRACT:
The present invention relates to a switch, a negative resistance cell, and a differential voltage controlled oscillator using the same. The present invention includes a first signal line provided in a first direction, a second signal line provided in parallel with the first signal line, and first to fourth gate electrodes, first to third source electrodes, and first to fourth drain electrodes formed between the first signal line and the second signal line, and provides a switch having electrodes in the order of the first gate electrode, the first drain electrode, the second gate electrode, the first source electrode, the third gate electrode, the second drain electrode, the fourth gate electrode, the second source electrode, the fifth gate electrode, the third drain electrode, the sixth gate electrode, the third source electrode, the seventh gate electrode, the fourth drain electrode, and the eighth gate electrode. According to the present invention, a differential voltage controlled oscillator for RF oscillation operation in the broadband area is realized by minimizing generation of parasitic components.

REFERENCES:
patent: 5352939 (1994-10-01), Hirabayashi et al.
patent: 1999-0050403 (1999-07-01), None
patent: 2006-0030932 (2006-04-01), None
patent: 2007-0052143 (2007-05-01), None
patent: WO-2005/034357 (2005-04-01), None
De Ranter et al., “A 0.25μm CMOS 17GHz VCO”, 2001 IEEE International Solid-State Circuits Conference, 3 pages.
Cao et al., “Millimeter-Wave Voltage-Controlled Oscillators in 0.13-μm CMOS Technology”, IEEE Journal of Solid-State Circuits, vol. 41, No. 6, Jun. 2006, pp. 1297-1304.
Hajimiri et al., “A General Theory of Phase Noise in Electrical Oscillators”, IEEE Journal of Solid-State Circuits, vol. 33, No. 2, Feb. 1998, pp. 179-194.

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