Dielectric waveguide resonator, dielectric waveguide filter, and

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

1997-06-09

2000-02-01

Ham, Seungsook

Wave transmission lines and networks

Coupling networks

Wave filters including long line elements

333248, H01P 120, H01P 710

Patent

active

060208007

ABSTRACT:
A conducting film is formed on a dielectric block in a dielectric waveguide resonator, and a through-hole is 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-hole as well as the outside dimensions of the dielectric block. A terminal electrode is formed on the outer surface of the dielectric block. A coupling hole is formed in the dielectric block and a coupling electrode is formed on the inner surface of the coupling hole. One end of the coupling electrode is connected to the terminal electrode and the other end of the coupling electrode is connected to the conducting film formed on the outer surface of the dielectric block. The above structure increases 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: 4607242 (1986-08-01), Cozzie
patent: 4691179 (1987-09-01), Blum et al.
patent: 4725793 (1988-02-01), Igarashi
patent: 5629656 (1997-05-01), Tada et al.

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