Radiofrequency thermal ablation (RTA) as one of the microwave hyperthermia is becoming the treatment of choice for small but inoperable tumors of the liver. In this paper, we deigned semi-rigid coaxial cable antenna with a ring slot for RTA applicator...
Radiofrequency thermal ablation (RTA) as one of the microwave hyperthermia is becoming the treatment of choice for small but inoperable tumors of the liver. In this paper, we deigned semi-rigid coaxial cable antenna with a ring slot for RTA applicator. To optimize the maximum output of radiation at 2450㎒, we simulated the antenna using 2D Electromagnetic Simulation Tools HFSS program and analyzed the return loss and the electric field Etot at the near-field region between the simulation results and measurement results.
As a result, we obtained the return loss of -29.786㏈ at 2450㎒ when the antenna was placed between two blocks of a pig's liver, and the measurement results agreed with the simulation results well. Therefore, this semi-rigid coaxial cable antenna with a ring slot can be used very usefully as the applicator for RTA.