| 摘要 |
PROBLEM TO BE SOLVED: To obtain a high frequency filter which has a low loss and superior group delay flatness. SOLUTION: The high frequency filter is provided with: a 1st transmission line; and a plurality of couples of resonance circuits each consisting of a 1st resonance circuit and a 2nd resonance circuit which are coupled with the 1st transmission line and also coupled with each other, and it is constituted so that the plurality of resonance circuit couples are coupled together. COPYRIGHT: (C)2005,JPO&NCIPI
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