Voltage-controlled-oscillator with modulator

Details Voltage-controlled-oscillator with modulator Voltage-controlled-oscillator with modulator

1987-02-04

1988-01-26

Grimm, Siegfried H.

Modulators

Amplitude modulator

Nonlinear device controlled by modulating signal

331177V, 332 18, 455113, H03C 322

Patent

active

047219270

ABSTRACT:
A voltage-controlled-oscillator with a modulator, comprising a first variable capacitance diode and a second variable capacitance diode. The first variable capacitance diode is connected in series with the second variable capacitance diode to form a resonance device, wherein capacitance of the first variable capacitance diode is controlled by applying a reverse bias voltage and an oscillation frequency control voltage to both ends of the first variable capacitance diode, and capacitance of the second variable capacitance diode is controlled in a reverse direction to changes in the capacitance of the first variable capacitance diode with respect to the oscillation frequency control voltage by applying the oscillation frequency control voltage and a modulation signal to both ends of the second variable capacitance diode to thereby provide a frequency modulated wave.

REFERENCES:
patent: 4494090 (1985-01-01), Popek et al.
patent: 4510465 (1985-04-01), Rice et al.

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