FDTD Analysis of Rectangular Waveguide in Receiving Mode as EMI Sensors

Testing electronic equipment for radiated emissions requires the accurate calibration of EMI sensor. The performance of the sensor depends on its Antenna Factor (AF), which is the ratio of the incident electric field on the antenna surface to the received voltage at the load end across 50Ω resistance. The theoretical prediction of the AF of EMI sensors is a very attractive alternative if one takes into consideration the enormous expenditure and time required for calibrating a sensor experimentally. In this work, FDTD is developed to predict the performance of rectangular waveguide for EMI sensors.

[1]  M. Sadiku.  Numerical Techniques in Electromagnetics , 2000 .

[2]  T. Iwasaki,et al.  Systematic uncertainties of the complex antenna factor of a dipole antenna as determined by two methods , 2004, IEEE Transactions on Electromagnetic Compatibility.

[3]  J. S. Shang,et al.  Computational electromagnetics , 1996, CSUR.

[4]  Dennis M. Sullivan,et al.  Electromagnetic Simulation Using the FDTD Method , 2000 .

[5]  R. Harrington.  Time-Harmonic Electromagnetic Fields , 1961 .

[6]  A. Chakraborty,et al.  ANALYSIS OF RECTANGULAR WAVEGUIDES AND THICK WINDOWS AS EMI SENSORS , 1999 .

[7]  J. L. Norman Violette,et al.  An Introduction to Electromagnetic Compatibility , 1987 .

[8]  C. Paul.  Introduction to electromagnetic compatibility , 2005 .

[9]  Dennis M. Sullivan,et al.  An unsplit step 3-D PML for use with the FDTD method , 1997 .

[10]  S. Sanyal,et al.  A Numerical Investigation of Finite Ground Planes and Reflector Effects on Monopole Antenna Factor using FDTD Technique , 2007 .

[11]  Analysis of waveguide-fed thick radiating rectangular windows in a ground plane , 1991 .

[12]  Luc Martens,et al.  An improved method to determine the antenna factor , 2005, IEEE Transactions on Instrumentation and Measurement.

[13]  Melinda Piket-May,et al.  9 – Computational Electromagnetics: The Finite-Difference Time-Domain Method , 2005 .

[14]  Sushrut Das,et al.  A Novel Modeling Technique to Solve a Class of Rectangular Waveguide Based Circuits and Radiators. , 2006 .

[15]  K. P. Ray,et al.  Measurement and modeling of near- and far-field antenna factor , 1994, Proceedings of IEEE Symposium on Electromagnetic Compatibility.

[16]  Subrata Sanyal,et al.  FDTD Analysis of Dipole Antenna as EMI Sensor , 2007 .

[17]  Raj Mittra,et al.  CFDTD: Conformal Finite Difference Time Domain Maxwells Equations Solver, Software and Users Guide , 2003 .