A novel magneto‐impedance sensor model based on the zeros of Bessel functions |
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| Authors: | Rafael Vargas‐Bernal Carlos A De la Cruz Blas Cristina Gómez‐Polo |
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| Affiliation: | 1. Departamento de Ingeniería en Materiales, Instituto Tecnológico Superior de Irapuato (ITESI), Irapuato, Guanajuato, México;2. Department of IREE, Public University of Navarre, Spain;3. Department of Physics, Public University of Navarre, Spain |
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| Abstract: | Nowadays, the design of magneto‐impedance (MI) sensors requires the development of lumped circuit models that can be simulated through equivalent impedance circuits relied on Bessel functions. A new impedance model based on Senani's equivalent using the zeros of Bessel functions is developed in this paper. The model allows to describe the impedance as a transfer function that can be easily synthesized by means of current conveyor circuits and passive elements. The mathematical representation was verified under simulation of transfer functions involving different number of poles and zeros. Moreover, the model has been verified using SPICE simulations and measurement results from a fabricated prototype demonstrating its scope and validity. Finally, a study of finite tracking errors of CCIIs used in the implementation of magneto‐impedance sensor has been realized. Copyright © 2014 John Wiley & Sons, Ltd. |
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| Keywords: | magneto‐impedance sensors Bessel functions current conveyors equivalent circuits analog integrated circuits |
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