Surface acoustic wave losses of thin-film gratings
- 15 May 1973
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 22 (10) , 484-486
- https://doi.org/10.1063/1.1654478
Abstract
Measurements of surface acoustic wave losses of thin‐film gratings on piezoelectric substrates have been made by a real‐time laser probe technique. For a 130‐line chrome‐aluminum shorted grating on Y‐cut Z‐propagating LiNbO3, 70% of the power incident on the grating was reflected, 4% was transmitted, and 26% was lost at the resonant grating frequency of 308.5 MHz. A transmission‐line model applied to the measurements indicates an impedance discontinuity ratio between the film and substrate of Z = 1.018.Keywords
This publication has 7 references indexed in Scilit:
- Second Order Effects in Surface Wave DevicesIEEE Transactions on Sonics and Ultrasonics, 1972
- Excitation of Shear Elastic Waves by an Interdigital Transducer Operated at Its Surface-Wave Center FrequencyJournal of Applied Physics, 1972
- Reduction of reflections in surface-wave delay lines with quarter-wave tapsProceedings of the IEEE, 1972
- Electrical and Mechanical Loading of a Piezoelectric Surface Supporting Surface WavesThe Journal of the Acoustical Society of America, 1970
- Microwave acoustic surface wave investigations using laser light deflectionProceedings of the IEEE, 1970
- The Generation and Propagation of Acoustic Surface Waves at Microwave FrequenciesIEEE Transactions on Microwave Theory and Techniques, 1969
- Filters and Dispersive Delay Lines Using Repetitively Mismatched Ultrasonic Transmission LinesIEEE Transactions on Sonics and Ultrasonics, 1968