Knowles Acoustics Introduces MEMS Ultrasonic Acoustic Sensor Element

Itasca, IL, July 11, 2005

Knowles Acoustics introduces an Ultrasonic Acoustic Sensor (UAS) Element for use in Ultrasonic Sensor Transducers or as a component to detect ultrasonic sound in air. The Ultrasonic Acoustic Sensor utilizes the latest technology in MEMS (Micro Electro Mechanical Systems) to provide a robust mechanical acoustic sensor which performs over a wide environmental range.

The sensor is ideal for capturing a wide frequency range applicable to a variety of ultrasonic applications: Ultrasonic Range Detection, Condition Monitoring, Fault detection, Level Sensing and Position Sensing.

The sensor can be utilized to monitor and detect frequencies from 10kHz to 100kHz with minimal attenuation across the frequency range. It has been used in the scientific community above 200Khz with reduced performance. The Ultrasonic Acoustic Sensor is an outgrowth of the highly successful Knowles SiSonic microphone utilized in high volume consumer applications such as cell phones. A typical sensor comprises a MEMS element and a CMOS circuit within a housing. Either the MEMS or the CMOS can be easily adapted through custom processing to meet specific application needs.

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The McCoy Group

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