Design of Novel High Sensitive MEMS Capacitive Fingerprint Sensor
Publish Year: 1391
نوع سند: مقاله ژورنالی
زبان: English
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شناسه ملی سند علمی:
JR_IJE-25-3_013
تاریخ نمایه سازی: 17 خرداد 1393
Abstract:
In this paper a new design of MEMS capacitive fingerprint sensors is presented. The capacitive sensor is made of two parallel plates with air gap. In these sensors, the capacitance changes is very importantfactor. It is caused by deformation of the upper electrode of sensor. In this study with making slots inupper electrode, using T-shaped protrusion on diaphragm in order to concentrate the force from finger ridges, making holes in lower electrode to reduce the air damping and using low stress material for diaphragm, we have been succeeded to design a novel MEMS fingerprint sensor with high sensitivitycompared with the previous one. In the present research, simulations were carried out using FEA method.
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Authors
m.s nateri
Department of Electrical Engineering, Babol University of Technology, Iran
b.a ganji
Department of Electrical Engineering, Babol University of Technology, Iran