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AUTO RECONFIGURABLE PATCH ANTENNA FOR BIOMEDICAL SINGLE CHANNEL MULTI-FREQUENCY MICROWAVE RADIOMETRY APPLICATIONS

By C. D. Nikolopoulos, A. T. Baklezos, and C. N. Capsalis

Full Article PDF (626 KB)

Abstract:
A small patch antenna is associated with passive (reactively loaded) elements (varactors) in order to auto adjust the resonant frequency in a single-channel multi-frequency configuration appropriate for biomedical applications. As a supplementary study of the authors in the field of detection of temperature abnormalities in human tissue phantom using microwave radiometry, this paper adds a contribution to frequency readjustment when a shift occur due to the fact that the human body is a complex and stratified dielectric object. The optimization of the array is performed using a Genetic Algorithm (GA) tool as a method of choice. The adjustment in the measurement frequency is performed by altering the values of the passive elements according to the shift needed.

Citation:
C. D. Nikolopoulos, A. T. Baklezos, and C. N. Capsalis, "Auto Reconfigurable Patch Antenna for Biomedical Single Channel Multi-Frequency Microwave Radiometry Applications," Progress In Electromagnetics Research C, Vol. 49, 19-29, 2014.
doi:10.2528/PIERC14021904

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