Bandwidth Enhancement of Coaxial Feed U Slotted Microstrip Antenna Modeled with FDTD Algorithm (original) (raw)

The aim of this paper is to design a U slotted rectangular patch antenna by way of direct coaxial probe feed technique and compare it’s performance with non slotted and rectangular slotted microstrip patch antenna. The composite effect of integrating these techniques offers a low profile, high gain, broadband and compact antenna element. Parameters like return loss, radiation pattern and bandwidth are analyzed using FDTD algorithm in MATLAB. From the simulated results, Bandwidth for the rectangular slotted antenna and U slotted antenna was found to be 2.4 times and 2.84 times respectively, that of the non slotted rectangular microstrip antenna. Also better directivity was observed. The experimental results supported the same. The U slotted microstrip antenna is fabricated and the radiation pattern is measured. Details of the antenna design and simulated results are presented and discussed.