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This paper describes full-wave analysis of the SiO2 overlay with finite thickness/metal grating/rotated YX-LN substrate structure. The influence of thickness and surface topology of the SiO2 overlay, metal grating selection (copper or aluminum) upon excitation and propagation characteristics of acoustic guided modes are discussed in detail. It is shown that in the structure there propagate several...
This paper describes the development of extremely wideband and very low-loss RF SAW filters of ladder type for future communication systems. Because of its large electromechanical coupling factor for SH-type SAWs, a Cu-grating/15degYX-LiNbO3 structure was employed as a substrate. At first, four-stage ladder type filter was designed and fabricated, where width/length weighted dummy electrodes were...
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