Controlling oscillator

Details Controlling oscillator Controlling oscillator

1986-09-29

1988-12-06

Edlow, Martin H.

357 3, 357 15, 357 47, 357 49, H01L 2906, H01L 2712, H01L 2726

Patent

active

047898879

ABSTRACT:
A voltage controlled oscillator includes a VCO chip that is a monolithic circuit with a Gunn diode and varactor diode intercoupled by a resonant circuit. A detector/discriminator/power divider chip is coupled to the VCO chip through a directional coupler and is a monolithic circuit having a pair of discriminator diodes and amplitude detector diode on a semi-insulating substrate with associated circuit components. Connected-together electrodes of the discriminator diodes are connected to one output of the power divider. An electrode of the amplitude detector diode is connected to the other output of the power divider. Stagger-tuned resonant circuits are coupled to the other electrodes of the discriminator diodes. Conducting portions forming low pass filters couple the amplitude detector diode and the discriminator detector diodes to respective outputs. The outputs of the discriminator and amplitude detector are coupled to respective inputs of an analog divider that provides a ratio signal that is coupled to the - input of a differential amplifier. The + input of the differential amplifier receives a frequency designating potential. The output of the differential amplifier is coupled to the varactor diode.

REFERENCES:
patent: 3617911 (1971-11-01), Gopeland
patent: 3874918 (1975-04-01), Nechtow et al.
patent: 4028147 (1977-06-01), Kamath et al.
patent: 4316201 (1982-02-01), Christou et al.
patent: 4374394 (1983-02-01), Camisa
patent: 4437109 (1984-03-01), Anthony et al.
patent: 4505799 (1985-03-01), Baxter
patent: 4507845 (1985-04-01), McIver et al.

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