3Thompson SC, Johnson MP. Performance and recent developments with doubly resonant wideband transducers[J]. Transducer for Sonics and Ultrasonics, 1992, (3): 287-293.
4Miyama T, Nada T. Investigation for tonpilz piezoelectric transducers with acoustic matching plates[J]. Ultrasonics Symposium, 1987, (2): 779-783.
5David W. Hawkins, Peter T. Gough. Multiresonance design of a Tonpilz transducer using the finite element method [JJ. IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequecny control, 1996, 43(5): 782-790.
6Dhilsha Rajapan. Performance of a low-frequency, multiresonant broadband tonpilz transducer[J]. J. Acoust. Soc. Am. 2002, 111(4): 1692-1694.
7YAO Q, L Bjorno. Broadband tonpilz underwater acoustic transducers based on multimode optimization[J]. IEEE Trans. Ultrason. Ferroelectr. Freq. Control, 1997, 44: 1060- 1065.
