发明授权
- 专利标题： Transceiver duplex filter utilizing saw filter
- 专利标题（中）： 收发双工滤波器利用锯式滤波器
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申请号： US350037申请日： 1994-11-28
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公开(公告)号： US5515015A公开(公告)日： 1996-05-07
- 发明人: Izumi Nakata
- 申请人： Izumi Nakata
- 申请人地址： JPX Tokyo
- 专利权人： Mitsubishi Denki Kabushiki Kaisha
- 当前专利权人： Mitsubishi Denki Kabushiki Kaisha
- 当前专利权人地址： JPX Tokyo
- 优先权： JPX4-159298 19920618
- 主分类号： H01P1/205
- IPC分类号： H01P1/205 ; H01P1/213 ; H03H9/02 ; H03H9/64 ; H03H9/72 ; H03H7/46
摘要：
A miniaturized portable telephone is provided in which a receiving radio-frequency filter is formed by a SAW filter, while a transmitting radio-frequency filter is formed by a dielectric filter and they are mounted on a substrate. The transmitting and receiving sides are connected to an antenna by transmission lines, the length of which is set to have a high impedance in the mutual transmitting and receiving frequency.
公开/授权文献
- US4981901A Water-borne coating composition 公开/授权日：1991-01-01
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