Patent ID: 8231534

Claim:
An ultrasonic transmitter/receiver device comprising: a laminate comprising a transmission section and a reception section superposed on each other, wherein: the transmission section comprises one or more first piezoelectric elements and is configured to transmit a first ultrasonic wave according to a transmission signal; the reception section comprises one or more second piezoelectric elements and is configured to output a reception signal generated by reception of a second ultrasonic wave; and the laminate has an emission/entry surface for emission and entry of the ultrasonic waves, and a plurality of side surfaces substantially perpendicular to the emission/entry surface; a set of transmission signal wire and transmission grounding wire for supplying the transmission signal to the transmission section; and a set of reception signal wire and reception grounding wire for picking up the reception signal from the reception section, wherein the transmission grounding wire and the reception grounding wire are integrated as a common grounding wire, and wherein the common grounding wire and the transmission signal wire are arranged on different side surfaces of the laminate, and the common grounding wire and the reception signal wire are arranged on different side surfaces of the laminate.