Abstract
A compact single probe feed asymmetrical semicircular fractal boundary patch antenna based on HIS (high impedance surface) is proposed for wide bandwidth at Wi-Fi band. Circular polarization operation can be obtained by embedding semi-circle fractal curves along the edges of the square patch antenna. The 10-dB return loss bandwidth is 15.13% (2.32GHz-2.70GHz). The 3-dB axial ratio bandwidth is 4.11% (2.38GHz-2.48GHz). The close relationship between simulation results and measured results establishes the antenna usefulness.
Highlights
A microstrip patch antenna is the most coveted candidate for modern day wireless communication applications
Metamaterials are classified into single negative materials (SNG) [1, 2, 9, 11], double negative materials (DNG) [5,6,7,8], electromagnetic band gap materials (EBG) [13, 14] and chiral materials
Equal indentation radii (Rx1=Rx2=Ry1=Ry2) along the four sides of the square patch antenna result in linear polarization
Summary
A microstrip patch antenna (being compact, low profile, easy to manufacture and multifunctioning) is the most coveted candidate for modern day wireless communication applications. Metamaterials are a good choice in designing novel antennas like compact wide band antennas because of their artificial electromagnetic properties [1,2,3,4,5,6,7,8,9,10, 12]. A compact microstrip antenna with dual-band operation having both unidirectional linear polarization and omni directional circular polarization properties based on epsilon negative materials is designed in [11]. Dual band patch antenna with unidirectional circular Polarization (CP) and omni directional CP based on EBG is designed in [14]. A compact microstrip patch antenna on HIS with semi-circle fractal curves is designed and simulated in single frequency with good 10-dB return loss bandwidth and 3-dB axial ratio bandwidth. Ansoft HFSS (high frequency structure simulator) software tool was used to simulate the antenna
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