Improve Bandwidth of Microstrip Slotted Patch Antenna Using Two Square Shape Defected Ground Structure

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Provided by: International Journal of Advanced Research in Electrical, Electronics and Instrumentation Engineering (IJAREEIE)
Topic: Networking
Format: PDF
In this paper, two square shape defected ground structure is proposed to improve the bandwidth, return loss, efficiency and compactness of microstrip patch antenna. The performance of antenna is characterized by the shape, dimension and location of defected ground structure at specific position on ground plane. By incorporating a square shape slot of optimum geometries at suitable location on ground plane, the bandwidth is increases from 44.6 MHz to 90.8MHz, return loss is enhanced from -13.94 dB to -39.25dB, and radiation efficiency is improved 79.91% to 98.91%, and compactness is achieved over the conventional antenna.
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