Voltage controlled oscillator apparatus

Details Voltage controlled oscillator apparatus Voltage controlled oscillator apparatus

2007-03-20

2007-03-20

Pascal, Robert (Department: 2817)

Oscillators

Solid state active element oscillator

Transistors

C331S167000, C331S046000, C331S1170FE

Reexamination Certificate

active

11097863

ABSTRACT:
A voltage controlled oscillator apparatus includes at least two voltage controlled oscillators, each of the voltage controlled oscillators being formed on a semiconductor substrate and having an LC-resonant circuit including a three-terminal inductor or a two-terminal inductor, and a continuously variable capacitor, and an amplifier including n-channel transistors or n-channel transistors and p-channel transistors. Two of the three-terminal or two-terminal inductors constructing the first and second voltage controlled oscillators have a coil shape formed with a wiring layer of an integrated circuit formed on the semiconductor substrate, and one of the three-terminal or two-terminal inductors has such a shape that its inductance value differs from that of the other of the three-terminal or two-terminal inductors, and is disposed in a region inside of the other of the three-terminal or two-terminal inductors with respect to its planar shape. Broadband in oscillation frequencies can be achieved while avoiding deterioration of the phase noise characteristics and enlarged chip sizes.

REFERENCES:
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patent: 7005930 (2006-02-01), Kim et al.
patent: 2005/0184820 (2005-08-01), Hung et al.
patent: 2006/0033587 (2006-02-01), Cabanillas
patent: 8-97377 (1996-04-01), None

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