High-frequency oscillator for 1.6 to 3 GHz frequency range

Details High-frequency oscillator for 1.6 to 3 GHz frequency range High-frequency oscillator for 1.6 to 3 GHz frequency range

1994-09-30

1995-07-18

Grimm, Siegfried H.

Oscillators

With distributed parameter resonator

Parallel wire type

331117D, 331177V, H03B 518

Patent

active

054345421

ABSTRACT:
A high-frequency oscillator is provided for a frequency range of 1.6 to 3 GHz. An oscillator stage includes an oscillator transistor and a voltage-controlled resonator unit. A buffer stage is connected at an output of the oscillator stage. The resonator unit includes an open resonator in the form of an etched structure with a wavelength which is shorter than lambda/4 (where lambda is an oscillator length). The resonator unit includes a voltage-controlled variable-capacitance diode, and a resonator terminal is connected between the voltage-controlled variable-capacitance diode of the resonator unit and the oscillator transistor of the oscillator stage. The resonator is preferably an open microstrip resonator, and the stages are disposed in a standardized housing in SMD (surface mounted device) technology.

REFERENCES:
patent: 4709409 (1987-11-01), Ma et al.
patent: 4990865 (1991-02-01), Martheli
patent: 4990866 (1991-02-01), Martheli
patent: 5187451 (1993-02-01), Nakamoto et al.

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