WIDE-BAND AND LOW-LOSS UNIDIRECTIONAL SAW FILTER.

被引：0
|
作者：
Yamada, Jun [1 ]
Fujita, Yuuji [1 ]
Yuhara, Akitsuna [1 ]
机构：
[1] Hitachi Ltd, Yokohama, Jpn, Hitachi Ltd, Yokohama, Jpn
来源：
Japanese Journal of Applied Physics, Supplement | 1985年 / 25 suppl 25-1卷
关键词：
ACOUSTIC SURFACE WAVE DEVICES - ACOUSTIC TRANSDUCERS;
D O I：
暂无
中图分类号：
TB5 [声学工程]; TN912 [电声技术和语音信号处理];
学科分类号：
0702 ; 070206 ; 081002 ;
摘要：
An improved group-type unidirectional SAW transducer has been proposed which reduces the geometrical phase difference between sending and reflecting electrodes. A 90 degree phase shifter delays the phase of the reflection side electrodes. In consequence, both the wider frequency band width for triple transit suppression and low insertion loss can be achieved.
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页码：151 / 153
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