Abstract—This paper presents analyses of non-asymmetry antenna configuration for microwave ablation at 2450 MHz using three-dimensional finite element analyses. Treatment of hepatic cancer often requires removal or destruction. Using coaxial-slot antenna is opened slot at one-side of antenna. We study the characteristics of various slot size and various power for non-asymmetry structure antenna to observe temperature distributions and SAR. The results illustrate that the coaxial- slot non-asymmetry structure antenna can be used in microwave ablation for destruction of the cancer cell in the area closed to the very fragile tissue or blood vessel.

Index Terms—Microwave(MW) ablation, finite-element(FE) analysis, non-asymmetry structure antenna.

W. Wongtrairat is with Department of Electronics Engineering, Faculty of Engineering and Architecture, Rajamangala University of Technology Isan, Nakhonratchasima 30000, Thailand (e-mail: wannaree. wo@rmuti.ac.th).
P. Phasukkit is with Department of Electronics Engineering, Faculty of Engineering, King Mongkut’s Institute of Technology Ladkrabang, Bangkok 10520, Thailand (corresponding author to provide e-mail: kppattar@ kmitl.ac.th).
S. Tungjitkusolmun is with Department of Electronics Engineering, Faculty of Engineering, King Mongkut’s Institute of Technology Ladkrabang, Bangkok 10520, Thailand (e-mail: ktsupan@kmitl.ac.th).
P. Nantivatana is with Department of Electronics Engineering, Faculty of Engineering, King Mongkut’s Institute of Technology Ladkrabang, Bangkok 10520, Thailand (e-mail: petch.na@spu.ac.th).

Cite: Wannaree Wongtrairat, Pattarapong Phasukkit, Supan Tungjitkusolmun, and Petch Nantivatana, "The Effect of Slot Sizes on Non-Asymmetry Slot Antenna for Microwave Coagulation Therapy," International Journal of Bioscience, Biochemistry and Bioinformatics vol. 1, no. 3, pp. 192-198, 2011.