Document Type



Master of Science (MS)


Electrical Engineering

First Advisor's Name

Tadeusz M.Babij

First Advisor's Committee Title

Committee Chair

Second Advisor's Name

Antonio Faraone

Third Advisor's Name

Chung-Kwang Chou

Fourth Advisor's Name

Malcom Heirner

Fifth Advisor's Name

Subbarao V. Wunnava

Date of Defense



The "Ferris Wheel" RE Exposure System was designed by Motorola Inc. to study the long-term biological effects due to RE exposure [3]. The main goal of this research project was to characterize the "Ferris Wheel" to know how efficient and symmetrical was the exposure system in distributing the RE power among its loads. The characterization of the system was done in terms of power efficiency, SAR, Whole-Body SAR and Localized SAR.

Exposure to RF sources is quantified in terms of SAR which defines the rate of electromagnetic deposition per unit mass. Determination of Whole-Body averaged SAR requires to have the actual amount of energy absorbed where as the temperature increase in the tissue material yields the Localized SAR. Calorimetric Techniques were used to characterize the "Ferris Wheel" exposure system in terms of Whole-Body SAR and efficiency. Microwave Studio and XFDTD simulation programs based on Finite Difference Time Domain method were also used to determine the Whole-Body SAR and B-field distribution in the "Ferris Wheel." The B-field distribution inside the FW was measured by using B-field probes and result was compared to that of simulated.




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