Abstract
An analysis of a unique compact planar antenna with a multiband microstrip square patch slotted in the form of Swastik on FR4 substrate is proposed in this paper. The proposed design has a Swastik shaped slot etched on the square radiating patch and the antenna is fed using a microstrip feed line. The FR4 substrate (εr = 4.4) is used for the simulation analysis. The current flow is altered by the Swastik shaped slot which resonates at the 5 bands (penta band), which are suitable for 5G sub-GHz applications. The antenna has a compact size of 32 × 32 × 1.6 mm3 and has a return loss, S11 of less than -10dB for all resonant five frequencies. The analysis was performed taking into account S11 (Return loss), directivity, antenna gain, and VSWR. In this proposed microstrip patch antenna design, patch is slotted in the shape of Swastik. In order to increase the number of resonant bands and to support multi band operation, the concept of DGS (Defective Ground System) is applied where purposefully the ground is etched out. This paper illustrates the proposed antenna design methodology and its results. The simulation work for the proposed design is carried out using HFSS (High Frequency Structure Simulator) tool.
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