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Propagation characteristics of longitudinal leaky SAW in Al-gratingstructure

机译:纵向渗漏声表面波在铝栅结构中的传播特性

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New orientations for longitudinal leaky SAW with small propagationnlosses and high velocities in lithium niobate (LN) and lithium tantalaten(LT) have been found. Their velocities are 6100 to 6500 m/s in LN andn5200 to 5800 m/s in LT. Their propagation losses are almost negligiblenonly in the case of an Al-grating structure. For example, the Alnthickness relative to the SAW wavelength must be 8.4% forn171°YZ'-LN; for 133°YZ'-LT, the value must be 9.2%. Thesenpropagation properties were obtained by using a simulator that combinednboth finite-element and analytical methods. These results were also wellnconfirmed by measuring the impedance responses of one-port SAWnresonators
机译:在铌酸锂(LN)和钽钽酸锂(LT)中发现了具有较小传播损耗和高速度的纵向泄漏声表面波的新取向。 LN的速度为6100至6500 m / s,LT的速度为5200至5800 m / s。在铝栅结构的情况下,它们的传播损耗几乎可以忽略不计。例如,对于171°YZ'-LN,相对于声表面波波长的Alnthickness必须为8.4%。对于133°YZ'-LT,该值必须为9.2%。通过使用结合了有限元和分析方法的模拟器获得了正传播特性。通过测量单端口声表面波谐振器的阻抗响应也很好地证实了这些结果

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