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A simplified form of the nonresonant perturbation technique is described which is suitable for measuring aspects of the performance of commonly used types of UHF and microwave antenna for biomedical radiometry and hyperthermia induction.<<ETX>>
An analytical model was developed to predict the specific absorption rate (SAR) pattern of helical antennas in a general medium. Experimental measurements verified the accuracy of the model and revealed the complicated nature of the heating pattern. The calculated and measured results show a distinct standing wave pattern along the length of the antenna, whose wave number depends strongly on the helical...
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