High frequency filter

Details High frequency filter High frequency filter

2006-06-20

2006-06-20

Ham, Seungsook (Department: 2817)

Wave transmission lines and networks

Coupling networks

Wave filters including long line elements

Reexamination Certificate

active

07064631

ABSTRACT:
A high-frequency filter whose main structure is formed by stacking a plurality of patterned substrates. The high-frequency filter includes a metal grounding layer, a signal input port, a signal output port, and a plurality of resonator layers having resonators coupled to one another for transmitting signals. By utilizing coupling among resonators located on adjacent layers respectively instead of coupling among resonators on a single layer in the prior planar patterned filter, the structure of the high-frequency filter in the invention can be changed according to process limitations.

REFERENCES:
patent: 3668569 (1972-06-01), Herring
patent: 4701727 (1987-10-01), Wong
patent: 5311159 (1994-05-01), Miura et al.
patent: 5525942 (1996-06-01), Horii et al.
patent: 6483404 (2002-11-01), Ammar et al.
patent: 6597259 (2003-07-01), Peters
patent: 6670206 (2003-12-01), Kim et al.
patent: 2004/0012467 (2004-01-01), Salmela et al.

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