A THz Slot Antenna Optimization Using Analytical Techniques

Abstract

Slot antennas are very popular microwave antennas and slotted wave guides are used for high frequency radar systems. A thin slot in an infinite ground plane is the complement to a dipole in free space. This was described by H.G. Booker [2] who extended Babinet's principle from optics to show that the slot will have the same radiation pattern as a dipole such that the E and H fields are swapped. As a result, the polarization is rotated, so that radiation from vertical slot is polarized horizontally. In this work we show how analytical techniques can be used for optimization of THz slot antennas, the analysis is then corroborated by using a numerical simulation which validates the performance parameters predicted by the analytical technique.