IEEE Transactions on Plasma Science
A dielectrically loaded wideband rod antenna has been studied as a pulse delivery system to subcutaneous tissues. Simulation results applying 100-ps electrical pulse show that it allows us to generate a critical electric field for biological effects, such as brain stimulation, in the range of several centimeters. In order to reach the critical electric field for biological effects, which is similar to 20 kV/cm, at a depth of 2 cm, the input voltage needs to be 175 kV. The electric field spot size in the brain at this position is similar to 1 cm(2). Experimental studies in free space with a conical antenna (part of the antenna system) with aluminum nitride as the dielectric have confirmed the accuracy of the simulation. These results set the foundation for high-voltage in situ experiments on the complete antenna system and the delivery of pulses to a biological tissue.
Original Publication Citation
Petrella, R. A., Schoenbach, K. H., & Xiao, S. (2016). A dielectric rod antenna for picosecond pulse stimulation of neurological tissue. IEEE Transactions on Plasma Science, 44(4), 708-714. doi:10.1109/tps.2016.2537213
Petrella, Ross A.; Schoenbach, Karl H.; and Xiao, Shu, "A Dielectric Rod Antenna for Picosecond Pulse Stimulation of Neurological Tissue" (2016). Bioelectrics Publications. 158.