Semiconductor differential circuit, oscillation apparatus,...

Details Semiconductor differential circuit, oscillation apparatus,... Semiconductor differential circuit, oscillation apparatus,...

2006-07-18

2006-07-18

Vuong, Quochien B. (Department: 2685)

Telecommunications

Receiver or analog modulated signal frequency converter

Frequency modifying or conversion

C257S347000, C257S501000, C438S151000, C438S586000

Reexamination Certificate

active

07079829

ABSTRACT:
A semiconductor differential circuit comprising a semiconductor substrate, a first semiconductor device on the semiconductor substrate having a gate electrode for having one of differential signals conveyed thereto and a drain electrode for outputting one of the differential signals controlled by the gate electrode, a second semiconductor device formed on the semiconductor substrate having a gate electrode for having the other of the differential signals conveyed thereto and a drain electrode for outputting the other of the differential signals controlled by the gate electrode, and wherein the drain electrode and drain electrode are placed in the proximity so that, at a predetermined frequency, it is equivalent to the one in which the drain electrode is grounded via a predetermined resistance, and the drain electrode is grounded via the predetermined resistance.

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M. Tiebout, “Low-Power Low-Phase-Noise Differentially Tuned Quadrature VCO Design in Standard CMOS”, IEEE Journal of Solid-State Circuits, vol. 36, No. 7, pp. 1018-1024, Jul. 2001.

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