发明名称 |
FILTER |
摘要 |
The present invention provides a filter exhibiting excellent filter characteristics and having less number of stages. A dielectric substrate (1) has one surface connected to a top conductor (2) and an opposite surface connected to a bottom conductor (3). A pair of rows of via-holes connecting together the top conductor (2) and the bottom conductor (3) are formed along the signal transfer direction. A slit (6) is formed in a portion of the top conductor (2) overlying the central resonator among a plurality of resonators. The slit (6) extends in a direction perpendicular to the signal transfer direction. Slits (7, 8) are formed in each of portions of the top conductor (2) overlying resonators disposed at both ends. A coplanar waveguide (9) mounted on the top conductor (2) is connected to the silt (7). <IMAGE> |
申请公布号 |
EP1300908(A4) |
申请公布日期 |
2004.03.17 |
申请号 |
EP20010947893 |
申请日期 |
2001.07.06 |
申请人 |
NEC CORPORATION |
发明人 |
MARUHASHI, KENICHI;ITO, MASAHARU;OHATA, KEIICHI |
分类号 |
H01P1/205;H01P1/208;H01P5/08;H01P5/107 |
主分类号 |
H01P1/205 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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