Computational study of frequency steered helical antennas for high power application

The advancement of linear mode photoconductive semiconductor devices provides increased timing control capabilities for arrayed antenna systems, especially those requiring high power. The temporal response of the switch is dependent upon photonic energy and therefore is capable of yielding specific frequency content per excitation. The versatility with respect to frequency content provides differing center frequencies dependent upon the desired application and effects. This paper explores the effect of driving helical antennas with mesoband signals using two unique center frequencies. The simulated antennas range from 4 to 8 turns. This paper presents computational results for a proposed frequency steering technique designed to achieve greater electric fields off boresight than are possible with axial mode driven helical antennas.