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The work presents an improved coaxial line fed ring-slot antenna system for microwave coagulation therapy. The performance of a hyperthermia applicator is characterized by both impedance matching and specific absorption rate (SAR) distribution in the tissue of interest. First, we analyze the antenna of a conventional applicator and modify the configuration(More)
In this paper, the aperture-coupled circular-polarized microstrip antenna for RFID reader system is presented. The feed structure is the slot-coupled configuration using single microstrip line, which can be designed and produced easily. This structure can also reduce a size of the antenna. A kind of pinwheel-slot is proposed as a shape of slot on the ground(More)
The paper describes a coaxial antenna system for treating cancer with catheter-based tissue heating. The performance of an antenna for hyperthermia is characterized by specific absorption rate (SAR) and temperature rise in the tissue of interest. First, we analyze the antenna of a conventional applicator and modify its configuration to improve the heating(More)
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