5-GHz Antisymmetric Mode Acoustic Delay Lines in Lithium Niobate Thin Film

@article{Lu20205GHzAM,
  title={5-GHz Antisymmetric Mode Acoustic Delay Lines in Lithium Niobate Thin Film},
  author={Ruochen Lu and Yansong Yang and Ming-Huang Li and Michael S. Breen and Songbin Gong},
  journal={IEEE Transactions on Microwave Theory and Techniques},
  year={2020},
  volume={68},
  pages={573-589}
}
We present the first group of acoustic delay lines (ADLs) at 5 GHz using the first-order antisymmetric (A1) mode in Z-cut lithium niobate thin films. The demonstrated ADLs significantly surpass the operation frequencies of the prior art with similar feature sizes because of their simultaneously fast phase velocity, large coupling coefficient, and low loss. In this article, the propagation characteristics of the A1 mode in lithium niobate are analytically modeled and validated with finite… 
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