Microwave transistor oscillator for wide band frequency tuning

Details Microwave transistor oscillator for wide band frequency tuning Microwave transistor oscillator for wide band frequency tuning

1976-11-17

1978-02-21

Grimm, Siegfried H.

Oscillators

With distributed parameter resonator

331117R, 331117D, 331177V, H03B 518

Patent

active

040755800

ABSTRACT:
A transistor oscillator for microwave frequency ranges has a transistor with interelectrode capacitances used for feedback. A series connection of a voltage controlled variable capacitor and line element are connected to the collector of the transistor as a frequency determining element. A line element is connected to the base for feedback and bias means are connected to the base and emitter through high frequency choking means constructed of two quarter wavelength line elements, one of which is arranged in no-load fashion. An attenuation network for frequency selection action is connected to the collector feedback path to dampen the oscillating circuit and prevent frequency jumping of the oscillator outside of the band intended for useful operation.

REFERENCES:
patent: 3270292 (1966-08-01), Harwood
patent: 3649937 (1972-03-01), Carlson
patent: 4010428 (1977-03-01), Sunkler
Bowman, "S-Band Solid-State Swept Frequency Oscillators," Electronic Engineering, vol. 42, July 1970, pp. 37-41.

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