Voltage controlled oscillator with a resonator common to a reson

Details Voltage controlled oscillator with a resonator common to a reson Voltage controlled oscillator with a resonator common to a reson

1998-08-10

2000-08-15

Mis, David

Oscillators

Solid state active element oscillator

Transistors

331 96, 331117V, 331117R, H03B 518

Patent

active

061042552

ABSTRACT:
A voltage controlled oscillation circuit includes a resonance circuit and an oscillation circuit. The oscillation circuit includes a capacitor, a variable capacitance diode, and a resonator composed of a strip line one end of which is grounded. The oscillation circuit includes an oscillation transistor, bias resistors, and, a Colpitts capacitor, a harmonic bypass capacitor, and a chip capacitor, one end of which is connected in series with a resistor and the other end of which is grounded. A node between the bias resistor and the chip capacitor connects the resonator composed of a strip line provided within the resonance circuit via a connection line, whereby the emitter of the oscillation transistor provided within the resonance circuit is grounded via the bias resistor and the resonator. In addition, a parallel resonance circuit is composed of the resonator and the chip capacitor.

REFERENCES:
patent: 3723906 (1973-03-01), Pedersen
patent: 5185583 (1993-02-01), Ooi et al.
patent: 5512862 (1996-04-01), Avanic et al.
patent: 5576667 (1996-11-01), Goma

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