Ultrasonic transmitting/receiving device and method for fabricating the same
AssigneeMurata Manufacturing Co., Ltd.
InventorsTakaaki Asada, Akiteru Takatsuka
Life of this patent
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Abstract
An ultrasonic transmitting/receiving device that effectively suppresses ringing during emission of ultrasonic waves and improves time resolution when measuring a sonic velocity includes a pair of ultrasonic transducers. Each of the ultrasonic transducers has a piezoelectric vibrator including a first electrode and a second electrode that are separated by a piezoelectric body and a backing disposed in contact with the first electrode and composed of the same material as a material of the piezoelectric body. The ultrasonic transducers are connected by a support so as to face each other and have a substantially rectangular U-shape as a whole when viewed from the side.
Claims24
An ultrasonic transmitting/receiving device comprising a pair of ultrasonic transducers and a support, each of the ultrasonic transducers comprising:
- a piezoelectric body;
- a piezoelectric vibrator including a first electrode and a second electrode that are separated by the piezoelectric body;
- and
- a backing disposed in contact with the first electrode and composed of the same material as a material of the piezoelectric body;
- wherein
- the pair of ultrasonic transducers are positioned between the support such that the second electrodes face each other with a predetermined gap therebetween and the ultrasonic transmitting/receiving device has a substantially rectangular U-shape when viewed from the side.
An ultrasonic transmitting/receiving device comprising a pair of ultrasonic transducers and a support, each of the ultrasonic transducers comprising:
- a piezoelectric body;
- a piezoelectric vibrator including a first electrode and a second electrode that are separated by the piezoelectric body;
- and
- a backing which is disposed in contact with the first electrode and has the same acoustic characteristic impedance as the piezoelectric body;
- wherein
- the pair of ultrasonic transducers are positioned between the support such that the second electrodes face each other with a predetermined gap therebetween and the ultrasonic transmitting/receiving device has a substantially rectangular U-shape when viewed from the side.
Dependencies are inferred from the claim text.