发明公开
- 专利标题： FILTER CIRCUIT AND HIGH FREQUENCY COMMUNICATION CIRCUIT USING THE SAME
- 专利标题（中）： 滤波电路和高频通信电路
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申请号： EP01943796申请日： 2001-06-20
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公开(公告)号： EP1317014A4公开(公告)日： 2005-10-12
- 发明人: AMANO YOSHIHISA , YAMADA ATSUSHI
- 申请人： SHARP KK
- 专利权人： SHARP KK
- 当前专利权人： SHARP KK
- 优先权： JP2000206319 2000-07-07
- 主分类号： H01P1/201
- IPC分类号： H01P1/201 ; H01P1/203 ; H01P1/205 ; H04B1/18
摘要：
In a distributed constant filter, two open-circuited line resonators (8,9) of lambda /2 are capacitively coupled with each other by an electromagnetic field coupling section (13), while the input (2) and output (3) terminals are mutual-inductively coupled with each other by an electromagnetic field coupling section (10). The frequency of the attenuation pole can be set close to the center frequency, and the steepness of the filter response can be enhanced.
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