Dielectric resonator filter

Details Dielectric resonator filter Dielectric resonator filter

2006-08-01

2006-08-01

Ham, Seungsook (Department: 2817)

Wave transmission lines and networks

Coupling networks

Wave filters including long line elements

C333S212000

Reexamination Certificate

active

07084719

ABSTRACT:
A direct coupled resonator filter having a plurality of resonant cavities (15) such that they are separated by inner walls (18) and a coupling structure (16) couples two adjoining resonant cavities (15) since the coupling structure is located in a slot (20) defined in the inner wall (18). Thus, a portion of an edge of the slot (20) comes into electrical contact with the coupling structure (16). In general, this portion of the edge of the slot (20) corresponds to a horizontal edge surface of the inner wall (18). It should be noted that the coupling structure (16) is perpendicular to a vertical plane defined by the slot (20).

REFERENCES:
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patent: 5608363 (1997-03-01), Cameron et al.
patent: 5805033 (1998-09-01), Liang et al.
patent: 6239673 (2001-05-01), Wenzel et al.
patent: 6342825 (2002-01-01), Hershtig
patent: 6522225 (2003-02-01), Liang et al.
patent: 6559740 (2003-05-01), Schulz et al.

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