Title:
CAPACITIVE MICROMACHINED ULTRASONIC TRANSDUCER AND INFORMATION ACQUISITION APPARATUS INCLUDING CAPACITIVE MICROMACHINED ULTRASONIC TRANSDUCER
Document Type and Number:
WIPO Patent Application WO/2017/068761
Kind Code:
A1
Abstract:
A capacitive micromachined ultrasonic transducer having a wide reception band is provided. The capacitive micromachined ultrasonic transducer includes an element including a first sub-element and a second sub-element each including a cell. The cell includes a vibrating membrane that includes one of two electrodes formed with a spacing therebetween and that is vibratably supported. The capacitive micromachined ultrasonic transducer further includes a first detection circuit, a second detection circuit, and a combining circuit that combines a signal from the first detection circuit and a signal from the second detection circuit. The first sub-element is electrically connected to the first detection circuit, and the second sub-element is electrically connected to the second detection circuit. The first detection circuit and the second detection circuit have different cut-off frequencies.
Inventors:
MARUYAMA AYAKO (JP)
TORASHIMA KAZUTOSHI (JP)
KANDORI ATSUSHI (JP)
TORASHIMA KAZUTOSHI (JP)
KANDORI ATSUSHI (JP)
Application Number:
PCT/JP2016/004553
Publication Date:
April 27, 2017
Filing Date:
October 12, 2016
Export Citation:
Assignee:
CANON KK (JP)
International Classes:
H04R19/00; A61B8/14; H04R3/00
Foreign References:
| JP2014197846A | 2014-10-16 | |||
| JP2015100093A | 2015-05-28 |
Attorney, Agent or Firm:
ABE, Takuma et al. (JP)
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