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Compact Patch Antenna for Electromagnetic Interaction With Human Tissue at 434 MHz

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4 Author(s)
Curto, S. ; Antennas & High Freq. Res. Group, Dublin Inst. of Technol., Dublin, Ireland ; McEvoy, P. ; Xiulong Bao ; Ammann, M.J.

Single element loop, dipole and conventional square patch antennas have been used as hyperthermia applicators in the treatment of cancerous human cells at superficial depths inside the body. A smaller novel patch antenna in very close proximity to a phantom tissue model produces an enhanced specific absorption rate pattern without significant frequency detuning or impedance mismatch. The new patch increases its coupling aperture by supporting a combination of resonances that are also typical for loop, dipole and square patch antennas. For computation efficiency and clarity in the synthesized hyperthermia treatment conditions, simplified planar tri-layered tissue models interfaced with a water-bolus are used to study the permittivity loading on the antennas and the resultant specific absorption rates.

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Antennas and Propagation, IEEE Transactions on  (Volume:57 ,  Issue: 9 )