Oscillators – Solid state active element oscillator – Transistors
Reexamination Certificate
2006-07-11
2006-07-11
Mis, David (Department: 2817)
Oscillators
Solid state active element oscillator
Transistors
C331S1170FE, C331S17700V, C331S185000
Reexamination Certificate
active
07075379
ABSTRACT:
A voltage-controlled oscillator circuit connected to supply and reference voltage for radio frequency operation is disclosed. The circuit comprises at least one inductor and at least one varactor connected in parallel with the at least one inductor. The circuit also comprises a pair of p-channel MOS transistors connected across the at least one varactor, each p-channel MOS transistor having source, drain, and gate terminals, wherein the drain terminal of the first of the pair of p-channel MOS transistors is connected to the gate terminal of the second of the pair of p-channel MOS transistors and the drain terminal of second of the pair of MOS transistors being connected to the gate terminal of the first of the pair of MOS transistors. The circuit further comprises biasing means for providing a biasing current to the voltage-controlled oscillator circuit, the biasing means configured according to one of a biasing n-channel MOS transistor connected to the supply voltage and a biasing p-channel MOS transistor connected to the reference voltage.
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Rana Ram Singh
Xiangdong Zhou
Yong Lian
Agency for Science Technology and Research
Nath & Associates PLLC
Novick Harold L.
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