Design and Optimization of H-shaped Fractal Microstrip Patch Antenna with Defected Ground Structure for Wireless Applications
Journal Title: International Journal for Research in Applied Science and Engineering Technology (IJRASET) - Year 2014, Vol 2, Issue 9
Abstract
Microstrip antennas find applications in aircraft, satellite and missile applications where important characteristics are size, weight and complexity. They are less bulky and capable of resonating at different bands but suffer from disadvantages like low bandwidth and low gain. There are number of techniques for improving these factors like cutting slots in patch, using fractal geometry and using DGS. Design and simulation has been carried out using IE3D simulation software. Minkowski fractal geometry has been applied on patch of antenna to form self similar H-shaped patch antenna. By applying four iterations of fractal geometry, When third iteration of fractal geometry is applied, characteristics slightly improves as antenna resonated at two bands namely 4.63 GHz and 6.2 GHz with return loss of -18.76 dB, -15.04 dB and -18.76 dB, gain of 1.52 dBi and 2.78 dBi and directivity of 5.44 dBi and 8.25 dBi. This antenna can be useful for WLAN, defense and secure communication applications.
Authors and Affiliations
Kapil Thakur, Sumit Kaushik, Dr. Abhay Sharma
Keywords
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