Oscillators – With frequency adjusting means – With voltage sensitive capacitor
Patent
1986-12-01
1987-07-28
LaRoche, Eugene R.
Oscillators
With frequency adjusting means
With voltage sensitive capacitor
333221, 333235, 334 78, H03J 318
Patent
active
046834478
ABSTRACT:
Tuning varactor circuitry is disclosed for a dielectric resonator stabilized oscillator (2). A varactor diode (22) is electrically connected in a loop (24) with an RF bypass capacitor (26), and the voltage across the diode is varied. In a first embodiment, first and second dielectric substrates (36, 38) face each other along the plane of the loop (24), with the loop (24) therebetween. In another embodiment, the loop (24) is around a peripheral side wall (52) of the dielectric resonator substrate (46). In another embodiment, the loop (24) is formed on the same surface (54) of a microstrip circuit substrate (56) with a transmission line (10).
REFERENCES:
patent: 4121182 (1978-10-01), Makimoto et al.
Kang W. Lee et al, "Varactor Tuned Dielectric Resonator GaAs FET Oscillator N X-Band", 1982 IEEE MTT-S Digest, 0149-645X/82/0000-0274, pp. 274-276.
Uve H. W. Lammers et al, "Microwave Dielectric Resonator-Tuning", Air Force Cambridge Research Laboratories, Hanscom Air Force Base, Mass., Oct. 3, 1974, AD/A-006 689, Distributed by: National Technical Information Service, U.S. Dept. of Commerce.
Poole, Jr. William E.
Steinkolk Richard B.
Talwar Ashok K.
Eaton Corporation
LaRoche Eugene R.
Pascal Robert J.
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