Wave transmission lines and networks – Coupling networks – Wave filters including long line elements
Reexamination Certificate
2005-05-25
2008-05-06
Pascal, Robert J. (Department: 2817)
Wave transmission lines and networks
Coupling networks
Wave filters including long line elements
C333S202000, C333S02400C
Reexamination Certificate
active
07369017
ABSTRACT:
A narrowband microstrip type bandpass filter adapted for a home network, telematics, an intelligent traffic system, and a satellite Internet, includes: an input terminal for receiving a predetermined signal; an output terminal for outputting a selection signal in a characteristic band; a first resonator electrically coupled with at least a portion of the input terminal; a second resonator electrically coupled with at least a portion of the first resonator; and a third resonator electrically coupled with at least a portion of the output terminal and the second resonator. A magnetic coupling is provided using a cross coupling gap or a cross coupling line between non-adjacent resonators, so that a pattern can be simplified by optimizing the design and the manufacturing process to provide low-cost millimeter-wave parts. The manufacturing cost can be reduced by miniaturizing the parts, and the mass production can be readily realized.
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Cho Kyoung Ik
Jun Dong Suk
Kim Dong Young
Lee Hong Yeol
Lee Sang Seok
Electronics and Telecommunications Research Institute
Glenn Kimberly E
Lowe Hauptman & Ham & Berner, LLP
Pascal Robert J.
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