Voltage-controlled oscillator

Details Voltage-controlled oscillator Voltage-controlled oscillator

1988-03-17

1989-01-31

LaRoche, Eugene R.

Oscillators

Negative resistance or negative transconductance oscillator

331177V, 332 30V, H03B 700, H03B 706, H03C 320

Patent

active

048018988

ABSTRACT:
A voltage-controlled oscillator includes a negative resistance generator, a resonant circuit, a first series circuit, a second series circuit, and a third series circuit. The first series circuit controls an oscillation frequency for changing a resonant frequency of the resonant circuit, and the second series circuit modulates this frequency. The third series circuit consists of a capacitor and a variable capacitance diode to which the modulation signal is supplied. The third series circuit changes the resonant frequency of the resonant circuit in a direction for cancelling a change in modulation sensitivity caused by the second series circuit.

REFERENCES:
patent: 4503402 (1985-03-01), Englund, Jr.
patent: 4684904 (1987-08-01), Watkins et al.

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