Ultra-high frequency filter with a dielectric resonator tunable

Details Ultra-high frequency filter with a dielectric resonator tunable Ultra-high frequency filter with a dielectric resonator tunable

1981-08-27

1984-07-10

Nussbaum, Marvin L.

Wave transmission lines and networks

Coupling networks

Wave filters including long line elements

333207, 333219, 333235, H01P 120, H01P 700, H01P 1202

Patent

active

044595700

ABSTRACT:
A dielectric resonator ultra-high frequency filter tunable in a large band width in which each dielectric resonator is constituted by a dielectric component with a high dielectric constant, which is fixed relative to an enclosure and a component made from the same dielectric material which is movable relative to the first component, in such a way that the distance d between facing surfaces of these two dielectric components varies, leading to a variation in the tuning frequency of the filter by modifying the coupling conditions.

REFERENCES:
patent: 3475642 (1969-10-01), Karp et al.
patent: 3713051 (1973-01-01), Kell
patent: 4184130 (1980-01-01), Nishikawa et al.
Harrison, "Microwave Filters Utilizing Dielectric Resonators", Technical Report Ecom-02088-4, U.S. Army Electronics Command, Fort Monmouth, N.J., Title Page and pp. 5-10, (Scientific Library, Apr. 25, 1973).
Pospieszalski, IEEE Trans. on Microwave Theory and Techniques, vol. MTT-27, No. 3, Mar. 1979, pp. 233-238.
Plourde et al., IEEE MTT-S International Microwave Symposium, Jun. 21-23, 1977, San Diego, New York, (U.S.), pp. 290-293.
Patent Abstracts of Japan, vol. 4, No. 14, Jan. 31, 1980, p. 131E169.
Gerdine, "A Frequency-Stabilized Microwave Band-Rejection Filter Using High Dielectric Constant Resonators", IEEE Trans. on Microwave Theory and Techniques, vol. MTT-17, No. 7, Jul. 1969, pp. 354-359.

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