| 单相单向换能器的低损耗SAW滤波器 |
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| 引用本文： | 黄广伦,杨毅生.单相单向换能器的低损耗SAW滤波器[J].压电与声光,1994,16(1):1-6. |
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| 作者姓名： | 黄广伦 杨毅生 |
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| 作者单位： | 四川压电与声光技术研究所 |
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| 摘 要： | 概述了采用分布式反射的单相单向换能器及其设计，特别推荐了电极宽度控制的单相单向换能器，并报道了我们制作的几种低损耗滤波器结果。单级低损耗滤波器插入损耗为４．７～６．５ｄＢ，带外抑制达５０ｄＢ。两级低损耗滤波器获得带外抑制近９０ｄＢ，而插损仅为１０ｄＢ。
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| 关 键 词： | 单相单向换能器，电极宽度控制，声表面波，低损耗滤波器 |
A Low Loss SAW Filter Employing Soingle-Phase Unidirectional Transducer |
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| HuangGuanglun,YangYisheng,LiYang,OuLi.A Low Loss SAW Filter Employing Soingle-Phase Unidirectional Transducer[J].Piezoelectrics & Acoustooptics,1994,16(1):1-6. |
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| Authors: | HuangGuanglun YangYisheng LiYang OuLi |
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| Abstract: | he present paper summarizes the desing of single-phase unidirectional transducers employingdistributed acoustic reflection with emphasis on the transducer controlled by electrode width.The results of several low loss SAW filters using single-phase unidirectional transducers are also introduced. The single stage SAW filters provide the insertion loss of 4.7-6.5dB.out-band attenuation of 50dB.and for the SAW filters with two stages of transducers,its out-band attenuation is 90dB, the insertion loss is only 10dB. |
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| Keywords: | single-phase unidirectional transducer SAW electrode width control low loss filter |
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