Low-cost, low-noise, temperature-stable, tunable dielectric reso

Details Low-cost, low-noise, temperature-stable, tunable dielectric reso Low-cost, low-noise, temperature-stable, tunable dielectric reso

1992-03-27

1993-08-03

Pascal, Robert J.

Wave transmission lines and networks

Resonators

Dielectric type

333235, 331 96, 331117D, H01P 710

Patent

active

052333191

ABSTRACT:
A dielectric resonator oscillator having a resonant structure connected to an amplifier the output of which is fed back to the input of the resonant structure. The resonant structure includes a metal cavity in which a dielectric disk is centrally mounted by a low-loss dielectric post. A pair of microstrip transmission lines extend into the cavity to provide energy outputs and inputs. Dielectric and conductive tuning screws are mounted on the cavity walls. Electrical tuning is provided via a varactor diode whose bias is adjustable. The diode may be connected in series or parallel with the microstrip transmission line.

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patent: 4780691 (1988-10-01), Fiedziuszko
patent: 4871983 (1989-10-01), Graycar
patent: 5130675 (1992-07-01), Sugawara
G. K. Montress and T. E. Parker, "Design Techniques for Achieving State-ohe Art Oscillator Performance", Proceedings of the 44th Annual Symposium on Frequency Control 1990, pp. 522-535, IEEE Catalog No. 90CH2818-3.
Mizan et al., "Temperature Stable, Low-Phase Noise 2 HGz Dielectric Resonator Oscillator", IEEE MTT-S Digest, LL-4, pp. 1183-1186, IEEE Catalog No. 91CH2870-4, Jun. 1991.
M. Mizan et al., "Ultra-Low Noise, 8.3 GHz Dielectric Resonator Oscillator", Proceedings of the 45th Annual Symposium on Frequency Control May 1991, pp. 693-699 IEEE Catalog No. 91CH2965-2.
M. Mizan et al., "Extremely Low-Phase Noise X-Band Field Effect Transistor Dielectric Resonator Oscillator", Jun. 1991 IEEE MTT-S Digest, AA-5, pp. 891-894 IEEE Catalog No. 91CH2870-4.
M. Mizan et al., "Determination of the Limiting Factors in the Absolute Phase Noise of an L-Band Dielectric Resonator Oscillator", Proceeding of the 45th Annual Symposium on Frequency Control, May 1991, pp. 687-692 IEEE Catalog No. 91CH2965-2.

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