Experimental Focal Waveforms of a Prolate-Spheroidal Impulse-Radiating Antenna

Impulse-radiating antennas (IRAs) have been used for different applications and the basic motivation for developing IRA systems is to radiate large amplitude, large band ratio, undispersed pulses. This chapter discusses applying fast, high-electric-field pulses without direct contact for killing skin cancer, i.e., to irradiate them using a prolate-spheroidal IRA. This technique is less invasive than inserting electrodes near the tumor. Even though this chapter is devoted to discussion of the experimental aspect of this problem, analytical and numerical behaviors for the focal waveforms and spot sizes of two- and four-feed arm prolate-spheroidal IRAs are also explored for comparison.