Capacitance meaurement in fF range

Author

Huang, Yuchung ; Gung, Furen ; Hu, Jiaming ; Lai, Chao Sung ; Lin, Yi-Ting

Author_Institution

Dept. of the Electr. Eng., Tunghai Univ., Taichung, Taiwan

Volume

1

fYear

2012

Firstpage

112

Lastpage

116

Abstract

In this paper, a capacitive measurement circuit is proposed. This interface circuit is characterized by its low cost, compact to simplify the circuit complexity. Besides it could be easily implemented by the discrete integrated circuits in the readymade market for capacitance measuring. Capacitive variations in fF range of diversified capacitive sensors can be detected and converted into voltage changes by the interface circuit. All the functions of the interface circuit are proved successfully through SPICE simulation. Simulation results and an implemented PCB have successfully confirmed the correct functions and performance of the capacitive measuring circuits.

Keywords

SPICE; capacitance measurement; capacitive sensors; printed circuits; PCB; SPICE simulation; capacitance meaurement; capacitive measuring circuits; circuit complexity; correct functions; discrete integrated circuits; interface circuit; Capacitance; Capacitance measurement; Capacitive sensors; Capacitors; RLC circuits; Voltage measurement; SPICE; capacitance measurement; interface circuit;

fLanguage

English

Publisher

ieee

Conference_Titel

Instrumentation & Measurement, Sensor Network and Automation (IMSNA), 2012 International Symposium on

Conference_Location

Sanya

Print_ISBN

978-1-4673-2465-6

Type

conf

DOI

10.1109/MSNA.2012.6324526

Filename

6324526