Dielectric waveguide resonator, dielectric waveguide filter, and

Details Dielectric waveguide resonator, dielectric waveguide filter, and Dielectric waveguide resonator, dielectric waveguide filter, and

1999-12-16

2000-12-12

Pascal, Robert

Wave transmission lines and networks

Coupling networks

Wave filters including long line elements

333208, 3332191, 333222, H01P 120, H01P 500, H01P 710

Patent

active

061604631

ABSTRACT:
A conducting film is formed on a dielectric block in a dielectric waveguide resonator, and through-holes are formed in the dielectric block. The unloaded Q is set by selecting the outside dimensions of the dielectric block. The resonance frequency is set by selecting the size and location of the through-holes as well as the outside dimensions of the dielectric block. Terminal electrodes are formed on the outer surface of the dielectric block. Coupling electrodes are formed on the inner surfaces of the through-holes. One end of each coupling electrode is connected to the corresponding terminal electrode and the other end of the coupling electrode may be connected to the conducting film formed on the outer surface of the dielectric block. Alternatively, the other end of the coupling electrode may be partially removed to adjust the amount of coupling; or may be completely removed so as to isolate the coupling electrode from the conducting film on the outer surface. The above-described structures increase the degree of freedom in the design of the characteristics, including the resonance frequency and unloaded Q, of the dielectric waveguide resonator. The invention also provides a dielectric waveguide filter with a simple coupling mechanism whereby it is possible to couple to an external circuit without having to use an additional member and without electromagnetic leakage.

REFERENCES:
patent: 5327108 (1994-07-01), Hoang et al.
patent: 5410285 (1995-04-01), Konishi
patent: 5629656 (1997-05-01), Tada et al.
patent: 5731751 (1998-03-01), Vangala
patent: 5926079 (1999-07-01), Heine et al.

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