Dual band oscillator circuit using strip line resonators

Details Dual band oscillator circuit using strip line resonators Dual band oscillator circuit using strip line resonators

1997-04-18

1998-12-22

Grimm, Siegfried H.

Oscillators

Plural oscillators

Adjustable frequency

331 49, 331 75, 331 99, 331117D, 331177V, 331179, H03B 512, H03B 518

Patent

active

058523847

ABSTRACT:
A dual band oscillator circuit according to the present invention comprises an oscillator circuit portion that oscillates at a first frequency, an oscillator circuit portion that oscillates at a second frequency, a buffer amplifier circuit portion to which an output of the first oscillator circuit portion is input through a first stage-to-stage coupling element and an output of the second oscillator circuit portion is input through a second stage-to-stage coupling element. Operation is switched between the first and second oscillator circuits by an externally applied control voltage signal.

REFERENCES:
patent: 3889210 (1975-06-01), Matsuura et al.
patent: 4353038 (1982-10-01), Rose et al.
patent: 4660002 (1987-04-01), Lijima et al.
patent: 5263182 (1993-11-01), Park
patent: 5420646 (1995-05-01), Dobrovolny
Chen Yu Chi, et al., "Switched Resonators Boost the Bandwidth of Microwave VCOs," Microwaves & RF, p. 131 ff, May 1990.

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