SHF band oscillator circuit using FET

Details SHF band oscillator circuit using FET SHF band oscillator circuit using FET

1978-01-30

1980-02-05

Grimm, Siegfried H.

Oscillators

Solid state active element oscillator

Transistors

331 99, 331176, H03B 504, H03B 518

Patent

active

041874765

ABSTRACT:
An SHF band oscillation circuit using a field effect transistor (FET) having a feedback path between gate and drain or source and a resonator connected to the gate. Impedances connected to the respective terminals of the FET comprise microstrip lines. A gate bias circuit includes a temperature-sensitive semiconductor device so that a gate bias is changed with the change in ambient temperature. In this manner, the change of oscillation frequency which would otherwise occur by the change of the ambient temperature is compensated. The resonator connected to the gate comprises a dielectric resonator to further stabilize the oscillation frequency.

REFERENCES:
patent: 2823312 (1958-02-01), Keonjian
patent: 3199050 (1965-08-01), Schleenbecker
patent: 3246258 (1966-04-01), Boreen
patent: 3721918 (1973-03-01), Rosen et al.
IEEE Trans on Microwave Theory and Tech. vol. MTT-23, No. 8, Aug. 1975, pp. 661-667, Maeda et al.

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