Stripline filter

Details Stripline filter Stripline filter

2011-07-19

2011-07-19

Lee, Benny (Department: 2817)

Wave transmission lines and networks

Coupling networks

Wave filters including long line elements

C333S203000

Reexamination Certificate

active

07982559

ABSTRACT:
A stripline filter with wide-band filter characteristics having an attenuation pole on a high frequency side of frequency characteristics. The stripline filter includes at least three resonant lines, and two of the resonant lines include parallel line parts and bent parts. The third resonant line has a U shape in which both ends thereof are open and interdigitally coupled to the two resonant lines located on both sides thereof. The parallel line parts extend from base ends connected to a ground electrode via side surface lines that are parallel to respective line parts of the third resonant line. The bent parts extend so as to be bent from ends of the parallel line parts, and face each other at an interval.

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PCT/JP2008/072745 International Search Report dated Mar. 3, 2009.
PCT/JP2008/072745 Written Opinion dated Mar. 3, 2009.

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