Whispering gallery mode dielectric resonator oscillator circuit

Details Whispering gallery mode dielectric resonator oscillator circuit Whispering gallery mode dielectric resonator oscillator circuit

1997-06-30

1998-11-10

Grimm, Siegfried H.

Oscillators

With distributed parameter resonator

Parallel wire type

331117D, 331117FE, 3332191, H03B 518

Patent

active

058349812

ABSTRACT:
A microwave source has an amplifying transistor capable of operating at microwave frequencies and a frequency selection circuit. The circuit has a whispering mode dielectric resonator and a feedback loop having a first microstrip line connected by an impedance adaptation circuit to a gate of said transistor and a second microstrip line connected by an impedance adaptation circuit to a drain of said transistor. The dielectric resonator is located between the first line and the second line for magnetic field coupling therewith.

REFERENCES:
patent: 4713632 (1987-12-01), Nishikawa et al.
patent: 4992763 (1991-02-01), Bert et al.
patent: 5652556 (1997-07-01), Flory et al.
Gross et al, "Design of Series Feedback Millimeter Wave Oscillators employing Whispering Gallery Mode Dielectric Resonators", 22nd European Microwave Conference, vol. 1, Aug. 24-27, 1992, Helsinki, Finland, pp. 491-496.
Bermudez et al, "A 94 GHz Low Noise GaAs FET Oscillator using Whispering-Gallery Dielectric Resonator Modes And a New Push-Push Configuration Reducing 1/f Converted Noise", 1988 IEEE MTT International Microwave Symposium Digest, vol. 1, May 25-27, 1988, New York, pp. 481-484.
Patent Abstracts of Japan, vol. 11, No. 314 (E-549) Patent No. 62107502, May 18, 1987.

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