The effects of aperture angle on the electrodynamic characteristics of the planar short slot antenna microwave band

Characteristics of symmetric planar slot antennas of axial radiation, the size of which is comparable with the radiation wavelength ( = 30 mm) having a linearly extending opening was studied. The same directional diagram investigated antennas have been theoretically calculated, experimentally measured and analyzed for Aperture angle of 30, 60, 90 and 120. Experimentally measured directional diagram of the antennas (at frequencies of 10 GHz) are in good agreement with the developed mathematical models.