BANDWIDTH AND GAIN ENHANCEMENT OF TRUNCATED MICROSTRIP PATCH ANTENNA FOR WLAN APPLICATIONS

This research is on analysis of the stacked truncated microstrip patch for WLAN applications. The total size of 20 mm × 20 mm × 3.2<sup>3</sup> mm. The same height and different dielectric constants are proposed in this design. For the improvement of the antenna required parameters, the basic microstrip is truncated at the edges. Then after shaped slots are etched from the active patch. The proposed stacked design uses RT5880 as the bottom substrate with a height of 1.6 mm and FR-4 as the upper substrate with a height of 1.6 mm to improve gain and low return loss. The proposed antenna is designed with a truncated microstrip patch with a proximity feeding technique. The microstrip feed line is on the bottom of this stacked design, and the radiating patch is on the upper substrate. The proposed antenna has a two-layered substrate where the patch element is on the top substrate and a microstrip feed line on the bottom substrate. The operating frequency of the proposed design is 5.6 GHz. The operating bandwidth is from 5.3 GHz to 5.7 GHz. Computer Simulation Technology Microwave Studio (CSTMW) 2018 was used to generate the simulation results. The benefits of this proposed design include its simple structure and small size. The other important parameters of the system, such as radiation pattern, directivity, VSWR, and reflection coefficient, are also simulated and discussed. The simulated results of the reflection coefficient are -42 dB, VSWR is less than 2, gain is 5.43 dB. According to the simulation results, this structure is well suited for WALN applications.