发明申请
- 专利标题： Surface acoustic wave apparatus and communications equipment
- 专利标题（中）： 表面声波装置和通信设备
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申请号： US11169303申请日： 2005-06-28
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公开(公告)号： US20050285700A1公开(公告)日： 2005-12-29
- 发明人: Wataru Koga , Takanori Ikuta , Masayuki Funami , Kiyohiro Iioka
- 申请人： Wataru Koga , Takanori Ikuta , Masayuki Funami , Kiyohiro Iioka
- 专利权人： KYOCERA CORPORATION
- 当前专利权人： KYOCERA CORPORATION
- 优先权： JP2004-190460 20040628; JP2004-220058 20040728
- 主分类号： H03H9/64
- IPC分类号： H03H9/64 ; H03H9/72
摘要：
An IDT electrode 2 and an electrode pad 3 are formed on one principal face of a piezoelectric substrate 1 and a circular electrode 4 is formed so as to surround these components. The circular electrode 4 is connected to a radiating conductor 15 formed on a bottom face of a circuit board 11 through a via conductor 14 formed within the circuit board 11. Thus, since heat generated in the IDT electrode 2 is easy to be released to the outside through the circular electrode 4, the via conductor 14 and the radiating conductor 15, adverse effects due to the heat can be prevented, thereby improving high power durability.
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