Abstract
A new structure of interdigitaI transducer (IDT) of surface acoustic waves is proposed having useful property as concern the overtone frequency response. The proposed transducer utilizes both dispersive aperiodic system of electrodes, and apodization.References
[1] B. LEWIS, R.G. ARNOLD, Electrode reflection, directionality and passband ripple in wideband SAW chirp filter, IEEE Trans., SU-32, pp. 409—422 (1985).
[2] 1. FILIPIAK, A. KAWALEC, E. DANICKI, Wide-band SAW dispersive filter with a flat amplitude response, Ultrasonics, 28, pp. 355—357 (1990).
[3] E. DANICKI, Generation and Bragg reflection of SAW in nearly periodic system of elastic metal strips on piezoelectric halfspace, J. Acoust. Soc. Am., 93, 116—131 (1993).
[2] 1. FILIPIAK, A. KAWALEC, E. DANICKI, Wide-band SAW dispersive filter with a flat amplitude response, Ultrasonics, 28, pp. 355—357 (1990).
[3] E. DANICKI, Generation and Bragg reflection of SAW in nearly periodic system of elastic metal strips on piezoelectric halfspace, J. Acoust. Soc. Am., 93, 116—131 (1993).
