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Vol. 116, Issue 5, May 2010, pp. 83-88

 

Bullet

 

Approximations in Calculating Stray Capacitance of Printed Spiral Inductors

 

R. C. WOODS

Department of Electrical and Computer Engineering, Louisiana State University,

Baton Rouge, LA 70803-5901, USA

Tel.: (225) 578 8961, fax: (225) 578 5200

E-mail: cwoods@lsu.edu

 

 

Received: 11 March 2010   /Accepted: 24 May 2010   /Published: 31 May 2010

 

Abstract: Jia, Heuer, Hillmann, and Meyendorf recently reported some simulations of the stray capacitance of two-dimensional spiral coils of the kind often used in eddy-current sensors. In this Letter, some amendments to the analysis are suggested, together with some approximations that permit more efficient computation.

 

Keywords: Eddy current sensor, Matrix methods, Sparse matrix, Spiral coil, Stray capacitance

 

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