| Popis: |
Inthis study, a new microstrip patch geometry, called Seljuk star, is proposed.The performance of the designed antennais compared with the performances of square and circular microstrip antennas,which are two other popular patch geometries inliterature. The design procedure consists of two phases: First, the patchdimensions of circular and square antennas aretaken as the same with Seljuk star dimension. Then the patch surface areas ofantennas are fixed to the area of Seljuk star patch and patch dimensions arecalculated for the new designs. The effect of different patch types onbandwidth are investigated. Rogers Duroid 6010 (h= 3.175 mm, ɛr=10.2)is chosen as the substrate of the antennas which are expected to have abandwidth center at 5800 MHz. All antenna designs are simulated in HFSS. Eachindividual antenna is intended to be working at a single frequency, but duringthe simulations multiple resonance are obtained in many designs. Therefore, thebandwidth and frequency comparisons are done for each resonant frequency amongthemselves. In comparison to the circular patch geometry with the same surfacearea, bandwidth is improved 10.57 times, as a result. The deviation between thetheoretical calculations and simulations is % 1.38, which is the smallestdeviation among all results. Based on this, it isobserved that Seljuk star microstrip patch antenna has a better performance whenits dimension or surface area is chosen as same with circular or squareantennas. The proposed Seljuk star patch shape is believed to have a highpotential to be used in future research. |
