| 应用耦合模理论分析S型声表面波器件特性 |
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| 引用本文： | 章安良,朱大中. 应用耦合模理论分析S型声表面波器件特性[J]. 传感技术学报, 2005, 18(3): 557-560 |
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| 作者姓名： | 章安良 朱大中 |
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| 作者单位： | 宁波大学电气工程与自动化系,浙江,宁波,315211;浙江大学信息与电子工程学系,杭州,310027 |
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| 基金项目： | 浙江省教育厅资助项目，浙江省宁波市博士科研项目 |
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| 摘 要： | 报道了在128°旋转Y切割X传播方向的LiNbO3基片上研制的结构新型的S型声表面波器件, 它将输入换能器激发的声表面波中心对称分成两路,分别由各自输出换能器检测输出.应用耦合模理论详细分析了该声表面波器件的特性,并应用网络分析仪测量该声表面波器件的特性以验证分析结果的正确性.结果表明,理论计算值与实验结果相近.
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| 关 键 词： | 声表面波 耦合模参数 插入损耗 |
| 文章编号： | 1005-9490（2005）03-0557-04 |
| 收稿时间： | 2004-12-07 |
| 修稿时间： | 2004-12-07 |
Analysis of Characteristics of S2Type Surface Acoustic WaveDevice Using Coupl ing of Modes Theory |
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| Z HA N G A nl i an g,Z HU Daz hon g. Analysis of Characteristics of S2Type Surface Acoustic WaveDevice Using Coupl ing of Modes Theory[J]. Journal of Transduction Technology, 2005, 18(3): 557-560 |
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| Authors: | Z HA N G A nl i an g Z HU Daz hon g |
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| Affiliation: | 1. Department of Elect rical Engineering and A utomation , N ingbo Uni versit y , Zhej iang N ingbo 315211 , China;2. Department of I nf ormation Science and Elect ronics Engineering , Zhej iang Universi t y , Hangz hou 310027 , China |
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| Abstract: | A new S2type SAW device fabricated on 128°rotated Y cut X LiNbO3 is reported. SAW excitedby inp ut IDT is divided cent rosymmet rily into two pat hs and detected by t heir outp ut IDT. Characteristicsof t his surface acoustic wave device are analyzed using the coupling of modes t heory and measured by net2work analyzer . Result s show t hat t heoretical values are near to measured values. |
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| Keywords: | surface acoustic wave device coupling of modes parameters insertion loss |
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