Dielectric filter using the TEM mode

Details Dielectric filter using the TEM mode Dielectric filter using the TEM mode

1997-01-08

1999-07-27

Ham, Seungsook

Wave transmission lines and networks

Coupling networks

Wave filters including long line elements

333206, H01P 1202, H01P 1205

Patent

active

059297255

ABSTRACT:
A dielectric filter with a shorting conductor for improving a spurious response characteristic in a mode other than a fundamental mode (TEM mode). Two resonator holes having inner conductors formed on their inner surfaces are formed through a dielectric block between a pair of end surfaces. An outer conductor is formed on outer surfaces of the dielectric block. A through hole is formed through a central portion of the dielectric block between two major surfaces of the block, and a shorting conductor is formed on the inner surface of the through hole to be connected to outer conductor portions on the two major surfaces of the dielectric block. The shorting conductor is disposed at a location where the electric field strength of the undesired mode is high.

REFERENCES:
patent: 4151494 (1979-04-01), Nishikawa et al.
patent: 4386328 (1983-05-01), Masuda et al.
patent: 4559508 (1985-12-01), Nishikawa et al.
patent: 5311159 (1994-05-01), Miura et al.

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