Gain Enhancement of Waveguide Slot Antennas Using Quasi-TEM Mode in Rectangular Waveguide

In this paper, First the structure of a rectangular waveguide with a longitudinal slot is presented to show the quasi-TEM wave with uniform distribution in the waveguidewidth. This Quasi-TEM wave improves the aperture field illumination of the slot and enhances the efficiency in this kindof antennas. Finally, by simulation a slot antenna is excited by aquasi-TEM wave. The results indicate the high efficiency of this antenna.

کلیدواژه ها:

Gain enhancement ، quasi-TEM wave ، rectangular waveguide ، slot antenna