| 摘要 |
PROBLEM TO BE SOLVED: To provide an ultrasonic phased array transceiver which reduces the number of ultrasonic resonators and the number of transformers required, simplifies assembly and is low-priced. SOLUTION: An ultrasonic phased array transceiver comprises: an ultrasonic resonator group in which ultrasonic resonators 2 each having a front-side electrode installed on a radiation plane and a rear-side electrode installed on a counter surface are arrayed in 10 rows and 10 columns on a plane; a transformer T1 including balanced secondary-side terminals F1, F2; and a transformer T2 including balanced secondary-side terminals R1, R2. When an underwater wavelength of an ultrasonic wave is defined asλ, a center interval P of rows and columns is set to 0.75λ≤P≤1.25λ. The front-side electrodes are connected for each of rows as a row connection group 31, and the rear-side electrodes are connected by column as a column connection group 32. The row connection group 31 is divided into connection groups of odd-numbered rows and connection groups of even-numbered rows and connected to the balanced secondary-side terminals F1, F2 of one transformer T1. The column connection group 32 is divided into connection groups of odd-numbered columns and connection groups of even-numbered columns and connected to the balanced secondary-side terminals R1, R2 of the other transformer T2. COPYRIGHT: (C)2010,JPO&INPIT
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