An Over-Moded TEM Cell System for in vivo Exposure at 2.45 GHz

Alessandra Paffi, Caterina Merla, Micaela Liberti, Fabio Fratta, Rosanna Pinto, Giorgio A. Lovisolo, Francesca Apollonio

Italian Inter-University Centre of Electromagnetic Fields and Bio-Systems, Department of Information Engineering, Electronic and Telecommunication, University of Rome “La Sapienza”, Rome 00184, Italy.
Italian Inter-University Centre of Electromagnetic Fields and Bio-Systems, Department of Information Engineering, Electronic and Telecommunication, University of Rome “La Sapienza”, Rome 00184, Italy;.
Italian Inter-University Centre of Electromagnetic Fields and Bio-Systems, Italian National Agency for New Technologies, Energy, and Sustainable Economic Development, Rome 00123, Italy..

DOI: 10.4236/jemaa.2012.49048                

Abstract

A TEM cell designed to operate at 900 MHz for exposing small-restrained animals (e.g. mice) has been theoretically, numerically and experimentally characterized at 2.45 GHz, which is the central frequency of the WiFi protocol. This study aims at evaluating the influence of higher order modes on the field homogeneity. The results demonstrate the superimposition of a tolerable standing wave, due to reflections at the cell terminations, and a slight beat wave due to the interference between different modes. Nevertheless, the final outcome is that the system can still be efficiently used to expose small animals in specific WiFi channels, provided they are properly placed in correspondence to the maxima of the electric field along the guide length.

Keywords

in vivo Experiments; Exposure System; TEM Cell; WiFi Signal

Conflicts of Interest

The authors declare no conflicts of interest.

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