Sualtı iletişimi için geniş bandlı ve çift yönlü akustik çevirici modellemesi

A two ceramic layer stacked transducer structure for short range underwatercommunications at high frequencies is studied in this work. The structure has awide bandwidth of one octave and operates at 350 kHz center frequency.Transducer structure inherently has two electrical and two acoustic ports. Ceramiclayers are matched to water load through quarter wavelength thick matching layerson each radiating face. Using electrical ports separately to compensate for the largeacoustic length of the structure in water is also investigated. It is shown that thewide bandwidth operation can be maintained. The beamwidth of the structure isnarrow due to end - fire effect of two back-to-back radiating elements.