发明公开
EP1339130A2 High-frequency circuit device and transmitter/receiver including the same
审中-公开
Hochfrequenzschaltungsanordnung und Sender /Empfängerunter Verwendung dieser Anordnung
- 专利标题： High-frequency circuit device and transmitter/receiver including the same
- 专利标题（中）： Hochfrequenzschaltungsanordnung und Sender /Empfängerunter Verwendung dieser Anordnung
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申请号： EP03004096.8申请日： 2003-02-25
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公开(公告)号： EP1339130A2公开(公告)日： 2003-08-27
- 发明人: Mikami, Shigeyuki , Kochi, Tetsuya , Matsuzaki, Hiroyasu , Mukaiyama, Kazutaka , Sakamoto, Koichi
- 申请人： Murata Manufacturing Co., Ltd.
- 申请人地址： 26-10, Tenjin 2-chome Nagaokakyo-shi Kyoto-fu 617-8555 JP
- 专利权人： Murata Manufacturing Co., Ltd.
- 当前专利权人： Murata Manufacturing Co., Ltd.
- 当前专利权人地址： 26-10, Tenjin 2-chome Nagaokakyo-shi Kyoto-fu 617-8555 JP
- 代理机构： Schoppe, Fritz, Dipl.-Ing.
- 优先权： JP2002050082 20020226
- 主分类号： H01P7/00
- IPC分类号： H01P7/00 ; H01P3/02
摘要：
A high-frequency circuit device includes a dielectric substrate (1). A planar conductor (2) is provided on each of top and bottom surfaces (1A,1B) of the dielectric substrate and a slot line (4) is formed on the top surface. Also, undesired-wave propagation preventing circuits (5), each including multistage band-elimination filters (6), are provided on the top surface of the dielectric substrate, with the slot line therebetween. Each of the band-elimination filters includes two conductive lines and a resonator which is provided at a portion of one of the conductive lines and which includes two spiral lines. Accordingly, propagation of an undesired wave of the band whose center is the resonance frequency of the resonator can be prevented.
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