Defected Ground Micro Strip Patch Antenna for WLAN Applications
S. Suganthi1, P. Thiruvalar Selvan2
1Santhanam Suganthi, Professor, Department of Electronics and Communication Engineering, K. Ramakrishnan College of Technology, Tiruchirappalli, (Tamil Nadu), India.
2Palavesanadar Thiruvalar Selvan, Professor, Department of Electronics and Communication Engineering, SRM-TRP Engineering College, Tiruchirappalli, (Tamil Nadu), India.

Manuscript received on 02 July 2019 | Revised Manuscript received on 05 July 2019 | Manuscript published on 30 July 2019 | PP: 1575-1579 | Volume-8 Issue-9, July 2019 | Retrieval Number: I7882078919/19©BEIESP | DOI: 10.35940/ijitee.I7882.078919

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Abstract: In this paper, a microstrip rectangular patch antenna (MRPA) with defect in ground in terms of reduction in dimension has been simulated, tested and analyze for multiband wireless applications. The defect (reduction in size) has been introduced to study the grounding effect in patch antennas for four configuration namely full ground, quarter ground, half ground right and half ground left antennas. After the comparison of simulated results of all four structures, the proposed better performed antenna with 23.815mm x 41 mm x 1.6mm dimension has been fabricated and tested. It operates in wide bandwidth from 2.5 GHz to 9.2 GHz suited for S band requirements which covers many wireless applications like Wifi, WLAN and WiMax. The experiment results shows that the proposed antenna has lower group delay and loss, ideal VSWR less than 1.5, impedance nearer to ideal 50 ohm and gain of 4.3 dBi. There is very good agreement between the simulated and tested results.
Keywords: Microstrip Rectangular Patch Antenna, Grounding Effect, Return loss, VSWR, Impedance Characteristics, Group Delay, Radiation Pattern, Wireless Applications.

Scope of the Article: Microstrip Antenna