Wireless Measurement System for Extracting Open Loop Micro Coil Parameters

Abstract We report here the wireless extraction of an open ended micro coil inductance L, parasitic capacitance C and resistance R using an inductively coupled passive system which consists of an electrically small magnetic loop antenna as a sensor coil and an open ended test micro coil. Wireless analytical model is developed which includes the gimmick effects generated due to parasitic coupling capacitances. The micro coil parameters i.e. inductance, inter winding capacitance and resistance are extracted from the wirelessly measured impedance signal and then compared with the analytical model. Further the inductively coupled system is simulated using COMSOL multiphyscics in ACDC module.

[1]  Douglas B. Miron,et al.  Small Antenna Design , 2006 .

[2]  Christos Christopoulos,et al.  Introduction to Electromagnetic Compatibility , 2007 .

[3]  Leonhard M. Reindl,et al.  A Wireless Sensor Readout System—Circuit Concept, Simulation, and Accuracy , 2011, IEEE Transactions on Instrumentation and Measurement.

[4]  G. Jacquemod,et al.  Sensitivity analysis of a passive inductive telemetry system for a capacitive sensor , 2006, 2006 Ph.D. Research in Microelectronics and Electronics.

[5]  M. Kazimierczuk,et al.  Modelling iron-powder inductors at high frequencies , 1994, Proceedings of 1994 IEEE Industry Applications Society Annual Meeting.

[6]  Sajeeda,et al.  Passive Telemetric Readout System , 2006, IEEE Sensors Journal.

[7]  M. Fonseca,et al.  Wireless micromachined ceramic pressure sensor for high-temperature applications , 2002 .

[8]  Hani A. Ghali,et al.  Understanding "Mutual Inductance" using COMSOL Multiphysics , 2009 .

[9]  Mauro Serpelloni,et al.  Contactless Transmission of Measurement Information Between Sensor and Conditioning Electronics , 2005, IEEE Transactions on Instrumentation and Measurement.

[10]  S.F. Pichorim,et al.  A Novel Method to Read Remotely Resonant Passive Sensors in Biotelemetric Systems , 2008, IEEE Sensors Journal.

[11]  Kyu-Jin Cho,et al.  A recursive frequency tracking method for passive telemetry sensors , 2003, Proceedings of the 2003 American Control Conference, 2003..

[12]  Leonhard M. Reindl,et al.  Wireless Readout of Passive LC Sensors , 2010, IEEE Transactions on Instrumentation and Measurement.

[13]  B. Ziaie,et al.  A self-resonant frequency-modulated micromachined passive pressure transensor , 2003 .

[14]  K. Murakami,et al.  Studies on Frequency Characteristics of Micro Inductors , 1994, IEEE Translation Journal on Magnetics in Japan.

[15]  Marian K. Kazimierczuk,et al.  Self-capacitance of inductors , 1997 .

[16]  Burhanuddin Yeop Majlis,et al.  A new passive telemetry LC pressure and temperature sensor optimized for TPMS , 2006 .

[17]  Marian K. Kazimierczuk,et al.  High-frequency models of ferrite core inductors , 1994, Proceedings of IECON'94 - 20th Annual Conference of IEEE Industrial Electronics.

[18]  Mark Mohammad Tehranipoor,et al.  Low-Transition Test Pattern Generation for BIST-Based Applications , 2008, IEEE Transactions on Computers.

[19]  Gilles Jacquemod,et al.  A wireless sensing platform for battery-free sensors , 2008, 2008 IEEE International Symposium on Circuits and Systems.