Microwave antenna design for myocardial tissue ablation applications
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Some of the advantages, design challenges, and recent research on the myocardial transcatheter microwave probe are discussed. In this application, the same power will produce almost twice the ablated depth that can be obtained with a DC-induced current or RF probe, even though the heart has relatively high attenuation. A design challenge is to improve the probe impedance match so that insertion loss levels at the 2.45 GH7 biological frequency are minimized. This is necessary in order to reduce reported catheter, heating in the access vein. Design results that have been obtained using the finite difference time domain (FDTF) method are presented and compared with measurements of power density and insertion loss for several different impedance matching structures. Other design features are analyzed by the same numerical method, thereby allowing a consistent determination of their benefit to the overall system.
IEEE Antennas and Propagation Society, AP-S International Symposium (Digest)
author list (cited authors)
Nevels, R. D., Arndt, D., Carl, J., Raffoul, G., & Pacifico, A.
complete list of authors
Nevels, RD||Arndt, D||Carl, J||Raffoul, G||Pacifico, A