Dielectric filter construction having resonators of trapezoidal

Details Dielectric filter construction having resonators of trapezoidal Dielectric filter construction having resonators of trapezoidal

1992-09-21

1995-04-04

Ham, Seungsook

Wave transmission lines and networks

Coupling networks

Wave filters including long line elements

333134, H01P 1205

Patent

active

054041201

ABSTRACT:
A dielectric filter having at least two adjacently-positioned resonators extended therethrough. The two adjacently-positioned resonators are of trapezoidal cross-sections to form thereby trapezoidal resonators. By suitable selection of the configurations of such resonators, the amount of coupling between such adjacent resonators may be controlled. For instance, a minor base side of the first trapezoidal resonator may be positioned adjacent to a corresponding minor base side of the adjacent trapezoidal resonator, or a major base side of the first trapezoidal resonator may be positioned adjacent to a major base side of the adjacent trapezoidal resonator, or a minor base side of the first trapezoidal resonator may be positioned adjacent to a major base side of the second trapezoidal resonator. Such electromagnetic coupling between the adjacent resonators is controlled by the relative configurations of such resonators rather than by increasing the spacings between such adjacent resonators.

REFERENCES:
patent: 4431977 (1984-02-01), Sokola et al.
patent: 4742562 (1988-05-01), Kommrusch
patent: 4823098 (1989-04-01), DeMuro et al.
patent: 4829274 (1989-05-01), Green et al.
patent: 4879533 (1989-11-01), de Muro et al.
patent: 5208566 (1993-05-01), Kenoun et al.
IEEE Transactions on Microwave Theory and Techniques, vol. 39, No. 6, Jun. 1991, New York, USA, pp. 1040-1043.

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