Title :
A Spice model for magneto-impedance sensors
Author :
Blas, Carlos A De La Cruz ; Gómez-Polo, Cristina ; Carlosena, Alfonso ; Olivera, Jesús
Author_Institution :
Dept. of EEE, Public Univ. of Navarre, Pamplona, Spain
Abstract :
In this paper a Spice model of magneto-impedance sensors is proposed. The model is based on the equivalent circuits of a Padeacute´s approximation derived from the impedance relied on Bessel functions. The resulting model is fast and acceptably accurate since only lumped electrical passive elements are required. Besides, it can predict the nonlinear frequency response from DC to several megahertz taking into account the transverse permeability changes due to an external magnetic field. The model is verified using Spice simulations together with measurements results from a discrete prototype for generating the pulse voltage source and a simple modulation type configuration.
Keywords :
Bessel functions; SPICE; magnetic sensors; permeability; Bessel functions; Pade approximation; Spice model; discrete prototype; lumped electrical passive elements; magneto-impedance sensors; nonlinear frequency response; pulse voltage source; transverse permeability; Equivalent circuits; Frequency response; Impedance; Magnetic field measurement; Magnetic sensors; Permeability; Pulse generation; Pulse measurements; Pulse modulation; Virtual prototyping; Analog & mixed signal processing; Magnetic sensor; modeling;
Conference_Titel :
Circuits and Systems, 2009. MWSCAS '09. 52nd IEEE International Midwest Symposium on
Conference_Location :
Cancun
Print_ISBN :
978-1-4244-4479-3
Electronic_ISBN :
1548-3746
DOI :
10.1109/MWSCAS.2009.5236150
