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首页> 外文期刊>IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control >Longitudinal-mode leaky SAW resonator filters on 64/spl deg/ Y-X lithium niobate
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Longitudinal-mode leaky SAW resonator filters on 64/spl deg/ Y-X lithium niobate

机译：纵向模式泄漏SAW谐振滤波器在64 / spl度/ Y-X铌酸锂上

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摘要

Y-parameter modeling is applied to obtain the frequency response of a first/third dual-mode longitudinally-coupled leaky-SAW (LSAW) resonator-filter on 64/spl deg/C Y-X LiNbO/sub 3/. Conventional driving-point and transfer admittance relationships for SAW filters are modified to incorporate the effects of LSAW reflection and bulk-wave scattering in the interdigital transducers and are expanded to include reflection gratings with shorted-metal strips. As inferred from experiment, the grating parameters incorporate a phase-shift term to relate the anomalous dispersion of shorted gratings, as well as a modified phase-slope parameter between input and output interdigital transducers (IDT's). Good agreement is obtained with experimental results published for 836.5 MHz two- and four-pole structures in the maximum-bandwidth configuration.
机译：应用Y参数建模来获得在64 / spl deg / C Y-X LiNbO / sub 3 /上的第一/第三双模式纵向耦合泄漏SAW（LSAW）谐振滤波器的频率响应。修改了SAW滤波器的常规驱动点和传输导纳关系，以在叉指式换能器中纳入LSAW反射和体波散射的影响，并扩展为包括带有短金属条的反射光栅。根据实验推断，光栅参数包含相移项以关联短路光栅的异常色散，以及输入和输出叉指换能器（IDT）之间的修改后的相坡参数。在最大带宽配置下，针对836.5 MHz两极和四极结构发布的实验结果获得了良好的一致性。

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