Parametric Analysis of DGS Based Sub-6 GHz Antenna for WiFi Communication

The purpose of this paper is to design a rectangular defective ground structure (DGS) antenna. A cross slotted rectangular patch antenna without DGS has a return loss of −20.2 dB at 2.34 GHz, while an antenna with DGS has a return loss of -38.5dB at the same frequency. The rectangular defective ground structure slots are made to enhance the antenna's performance. The FR4 epoxy substrate was utilized to create the 29 mm x 37 mm antenna, which was measured using the coaxial feed technique. The electromagnetic Computer Simulation Technology (CST) studio suite simulates and optimizes the antenna. Because of its thinness and compactness, the antenna is very portable. The design process is based on calculated model significance, model radiogram, and reflection coefficient rather than empirical design techniques. VSWR values are always less than 2 and are suitable for wireless LANs from 2.2 to 5.8 GHz. The antenna is optimized and simulated for improved performance by adding rectangular slots with the help of an electromagnetic simulator. The antenna is verified to be suitable for sub-6 GHz broadband applications.