Next generation wireless communication deploys high frequency spectrum to accommodate text, data, image and videos. In the similar way the design of antenna is an essential component. Demand of small size antenna with adequate properties makes the antenna engineers busy in research. In this paper, an approach is taken to design an array antenna with coaxial feed. It is fed through the rectangular patch at the centre and is surrounded by the array of circular parasitic patches. Since the geometry with rectangular and circular shapes have been proposed by researchers earlier, the modification of the geometry is considered in this case. The substrate is considered with high dielectric constant material and is chosen FR4-epoxy as substrate material that has 0.02 loss tangent and 4.4 relative permittivity. Dimension of the proposed antenna is considered as 30mmX30mmX1.6mm. The size of the rectangular patch is taken as 11mmX11mm, whereas the dimensions of circular patches are considered as of 4mm radius each. The circular patches of 3X3 array are designed to achieve less space. The measured parameters are compared with rectangular patches around the central rectangular along with the reference results. The performance found better than other said antennas and suitable for next generation communication. The impedance bandwidth obtained with planned antenna is 2.25 GHz and the return loss found is 37dB. The antenna resonates at 15.5 GHz, 9 GHz, and 5 GHz. For next generation digital radio system and wireless communication, the results can be properly applicable.
Volume 12 | 04-Special Issue