Cylindrical Harmonics In Hexagonal Patch Antennas

The hexagonal microstrip antenna had been analysed using its equivalence with both; a circular and a rectangular microstrip antennae and contrasts are highlighted. In this paper, modal analysis for impedance distribution and radiation patterns has been carried out for the first (fundamental mode) and second harmonics. Simulations have been validated with experimental results with good agreement to establish that the hexagonal microstrip antennas are analogous to circular microstrip antennas rather than the rectangular microstrip antennas. Results presented here establish that cylindrical harmonics get excited in the hexagonal geometry, similar to Circular geometry. This work will help in mitigating radiated EMI generated at various harmonics of hexagonal microstrip antenna when operated at fundamental mode.