Articles | Volume 5
Adv. Radio Sci., 5, 127–133, 2007
https://doi.org/10.5194/ars-5-127-2007
Adv. Radio Sci., 5, 127–133, 2007
https://doi.org/10.5194/ars-5-127-2007

  12 Jun 2007

12 Jun 2007

Extended post processing for simulation results of FEM synthesized UHF-RFID transponder antennas

R. Herschmann1,2, M. Camp1,2, and H. Eul1 R. Herschmann et al.
  • 1Leibniz Universität Hannover, Institute of Radiofrequency and Microwave Engineering, Appelstraße 9a, 30167 Hannover, Germany
  • 2Smart Devices GmbH & Co. KG, Schönebecker Allee 2, 30823 Garbsen, Germany

Abstract. The computer aided design process of sophisticated UHF-RFID transponder antennas requires the application of reliable simulation software. This paper describes a Matlab implemented extension of the post processor capabilities of the commercially available three dimensional field simulation programme Ansoft HFSS to compute an accurate solution of the antenna's surface current distribution. The accuracy of the simulated surface currents, which are physically related to the impedance at the feeding point of the antenna, depends on the convergence of the electromagnetic fields inside the simulation volume. The introduced method estimates the overall quality of the simulation results by combining the surface currents with the electromagnetic fields extracted from the field solution of Ansoft HFSS.

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