发明名称 |
Oberflächenwellenbauelement und Verfahren zum Herstellen desselben |
摘要 |
A surface acoustic wave device includes a piezoelectric substrate, and at least one interdigital transducer disposed thereon which is made of a metal or an alloy that is heavier than Al. The acoustic velocity distribution of surface acoustic waves in the extending direction of electrode fingers of the at least one interdigital transducer is not greater than about 276 ppm, thereby effectively suppressing considerable ripples, which are noticeably found in the group delay time characteristic in particular, within the bandpass area. |
申请公布号 |
DE10146363(B4) |
申请公布日期 |
2007.10.25 |
申请号 |
DE2001146363 |
申请日期 |
2001.09.20 |
申请人 |
MURATA MFG. CO. LTD. |
发明人 |
NAKAO, TAKESHI;KADOTA, MICHIO |
分类号 |
H03H9/145;H03H9/25;H03H3/08;H03H9/00;H03H9/76 |
主分类号 |
H03H9/145 |
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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