High velocity lamb waves in LiTaO3 thin plate for high frequency filters

Najoua Assila; Michio Kadota; Yuji Ohashi; Shuji Tanaka

doi:10.1109/FCS.2016.7546796

High velocity lamb waves in LiTaO₃ thin plate for high frequency filters

Najoua Assila, Michio Kadota, Yuji Ohashi, Shuji Tanaka

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

1 Citation (Scopus)

Abstract

First anti-symmetric (Ai) mode Lamb wave propagating in a LiTaO₃ thin plate at an Euler angle around (0°, 45°, 0°) has a high velocity. Both phase velocity and electromechanical coupling factor have been evaluated at different propagation angles (0°, 45°, ψ°). A1 mode Lamb wave at (0°, 45°, 0°) offers the highest velocity and largest electromechanical coupling factor, thus proving suitable for high frequency devices. Leaky Lamb waves' velocities have been measured for A0 and zero-th symmetric (S0) modes at different propagation angles by ultrasonic microscopy and are almost similar to the calculated Lamb wave velocities. Whereas Ai mode Lamb wave response has been evaluated at (0°, 42°, 0°), (0°, 42°, 45°) and (0°, 42°, 90°) using a network analyzer. The influence of Al-interdigital transducers' (IDT) thickness on the reflection coefficient has been evaluated for thin (0°, 39°, 0°) LiTaO₃. An IDT's thickness larger than 0.03λ (λ is the wavelength) is needed to fabricate A1 mode Lamb wave resonators.

Original language	English
Title of host publication	2016 IEEE International Frequency Control Symposium, IFCS 2016 - Proceedings
Publisher	Institute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)	9781509020911
DOIs	https://doi.org/10.1109/FCS.2016.7546796
Publication status	Published - 2016 Aug 16
Event	70th IEEE International Frequency Control Symposium, IFCS 2016 - New Orleans, United States Duration: 2016 May 9 → 2016 May 12

Publication series

Name	2016 IEEE International Frequency Control Symposium, IFCS 2016 - Proceedings

Other

Other	70th IEEE International Frequency Control Symposium, IFCS 2016
Country/Territory	United States
City	New Orleans
Period	16/5/9 → 16/5/12

Keywords

High Frequency
Lamb waves
LiTaO
Propagation Angle
Reflection Coefficient

ASJC Scopus subject areas

Computer Networks and Communications
Instrumentation

Access to Document

10.1109/FCS.2016.7546796

Cite this

Assila, N., Kadota, M., Ohashi, Y., & Tanaka, S. (2016). High velocity lamb waves in LiTaO₃ thin plate for high frequency filters. In 2016 IEEE International Frequency Control Symposium, IFCS 2016 - Proceedings [7546796] (2016 IEEE International Frequency Control Symposium, IFCS 2016 - Proceedings). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/FCS.2016.7546796

High velocity lamb waves in LiTaO₃ thin plate for high frequency filters. / Assila, Najoua; Kadota, Michio; Ohashi, Yuji et al.
2016 IEEE International Frequency Control Symposium, IFCS 2016 - Proceedings. Institute of Electrical and Electronics Engineers Inc., 2016. 7546796 (2016 IEEE International Frequency Control Symposium, IFCS 2016 - Proceedings).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Assila, N, Kadota, M, Ohashi, Y & Tanaka, S 2016, High velocity lamb waves in LiTaO₃ thin plate for high frequency filters. in 2016 IEEE International Frequency Control Symposium, IFCS 2016 - Proceedings., 7546796, 2016 IEEE International Frequency Control Symposium, IFCS 2016 - Proceedings, Institute of Electrical and Electronics Engineers Inc., 70th IEEE International Frequency Control Symposium, IFCS 2016, New Orleans, United States, 16/5/9. https://doi.org/10.1109/FCS.2016.7546796

Assila N, Kadota M, Ohashi Y , Tanaka S. High velocity lamb waves in LiTaO₃ thin plate for high frequency filters. In 2016 IEEE International Frequency Control Symposium, IFCS 2016 - Proceedings. Institute of Electrical and Electronics Engineers Inc. 2016. 7546796. (2016 IEEE International Frequency Control Symposium, IFCS 2016 - Proceedings). doi: 10.1109/FCS.2016.7546796

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