Method and materials for tuning the center frequency of narrow-b

Wave transmission lines and networks – Coupling networks – Electromechanical filter

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29 2535, 310313R, 333154, H03H 964, H03H 942, H03H 925, H01L 4122

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active

042439604

ABSTRACT:
A method and device for adjusting the center frequency after fabrication of surface acoustic wave (SAW) devices by the deposition of a nonconducting coating which alters the SAW propagation velocity of the device.

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Helmick, Jr. et al., "Fine Tuning of Narrow-Band SAW Devices Using Dielecc Overlays", 1977 Ultrasonics Symposium Proceedings, IEEE Cat., #77CH1264-ISU; pp. 659-663.
Sander et al., "Impact of Charge Coupled Devices and Surface Acoustic Waves on Signal Processing and Imagery in Advanced Systems," Paper No. 3-10 to 34th Technical Meeting of Agard/AVP, Ottawa, Canada, Oct. 1977, pp. 1-21.

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