Skew-symmetrical defected ground structure for...

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2007-05-08

2007-05-08

Jones, Stephen E. (Department: 2817)

Wave transmission lines and networks

Coupling networks

Wave filters including long line elements

C333S246000, C333S219000

Reexamination Certificate

active

11050385

ABSTRACT:
A system and method are disclosed for improving the reliability of parallel-coupled line filters. In one embodiment, a parallel-coupled line filter system is disclosed which comprises at least one open-line resonator, at least one defected ground structure arranged on opposite sides of the line resonator having a first lattice and a second lattice in a skew-symmetrical fashion and coupled through a slim gap, wherein the first and second lattices are formed on a ground plane.

REFERENCES:
Park, Jun-Seok, “A Design of the Novel Coupled-Line Bandpass Filter Using Defected Ground Structure With Wide Stopband Performance”, IEEE Transactions on Microwave Theory and Techniques, vol. 50, No. 9, (Sep. 2002), pp. 2037-2043.

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