Abstract
This paper discusses about miniaturized size of the antipodal Vivaldi antenna by using triangular and circular slots on the Vivaldi antenna. A normal antipodal Vivaldi antenna using FR4 epoxy substrate with a dielectric constant of 4.4 and thickness 1.6mm has been designed. Then, the triangular and the circular slots are added at the upper layer of the miniaturized size of the antenna, the triangular slot plays a major role in reduction of size of the antenna and also results in the better improvement of return loss, gain and bandwidth operated at a frequency in the range of 3GHz to 25GHz and the circular slot placed at the exponential part of the antenna helps to reduce excessive mutual coupling between different slots of the antenna. The feeding technique used for designing of this antenna is micro strip feedline. The proposed antenna results in different applications by incrementing the frequency. The results of simulation are been realized using HFSS 13.0, a high frequency simulator structure program. The structured antipodal Vivaldi radio wire and the triangular and round openings antipodal Vivaldi receiving wire are manufactured. The arrival misfortune reaction and the increase of the manufactured radio wires are estimated and contrasted and the re-enactment results.
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