![]() The prototype operating in porcine muscle created an ∼10 cm 3 symmetric ablation zone after 10 min of ablation with a power level of 18 W. Both fabricated prototypes exhibited good impedance matching and produced localized coagulation zones as predicted by the simulations. Two prototypes were fabricated and tested in ex vivo ablation experiments: one was designed to produce symmetric heating patterns and the other was designed to generate asymmetric heating patterns. We analyzed the specific absorption rate and temperature profiles using electromagnetic and thermal simulations. The angle and direction of the deployed dipole arms are used to control the heating pattern. ![]() The antenna design is based on a dipole fed by a balanced parallel-wire transmission line. We present an investigation of a new class of microwave ablation (MWA) antennas capable of producing axially symmetric or asymmetric heating patterns. ![]()
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