Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)
- 2001.07c
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- Pages.1872-1874
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- 2001
A Telemetry Silicon Pressure Sensor of LC Resonance Type
LC공진을 이용한 원격측정용 압력센서의 제작 및 실험
- Kim, Hak-Jin (School of electronics engineering, Ajou University) ;
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Kim, Soon-Young
(School of electronics engineering, Ajou University) ;
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Yang, Sang-Sik
(School of electronics engineering, Ajou University)
- Published : 2001.07.18
Abstract
This paper presents an implantable telemetry LC resonance-type pressure sensor to measure the cerebral ventricle pressure. The sensor consists of an inductor and a capacitor. The LC resonant circuit consists of the sensor and an external antenna coil that are coupled magnetically. The resonance frequency of the circuit decreases as the applied pressure increases the capacitance of the sensor. The sensor is designed in consideration of the biocompatibility and long lifetime for continuous monitoring of the ventricle pressure. The sensor is simple to fabricate and small in comparison with others reported previously. The inductor is fabricated by electroplating and the variable capacitor is constructed with a flexible p+ diaphragm. Also, the deflection of the diaphragm, the variation of the capacitance and the resonance frequency are analyzed and calculated.
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