Abstract
In this paper, a pentagon slot inside fractal circular patch microstrip resonator to design compact antenna over partial ground plane is introduced using 3rd iteration of adopted fractal geometry. This antenna is modeled on FR4 substrate with a size of (20 x 18) mm2, thickness of 1.5mm, permittivity of 4.3 and loss tangent of 0.02. The used type of feeding is microstrip line feed. It is designed to operate at wide frequency range of (4.5-9.3) GHz at resonant frequencies of 5.7GHz and 7.9GHz with impedance bandwidth of 4.8 GHz. Both lengths of ground plane Lg and width of feed line Wf are optimized in order to acquire optimum bandwidth. The simulated return loss values are -33 and -41 dB at two resonant frequencies of 5.7 and 7.9 GHz with gain of 3.2 dB. The simulated results offered noteworthy compatibility with measured results. Also, the proposed wideband microstrip antenna has substantial compactness that can be integrated within numerous wireless devices and systems.
Highlights
Wireless communication system has testified enormous expansions and augmentation in the request for high data rate through wide bandwidth, Micro Strip Antenna (MSA) is used to meet that demand [1]
Koch fractal based hexagonal patch antenna for circular polarization has been designed for ultra-wideband application as explained by [12] using microstrip inset feed and a combination of two fractal geometries of Koch and Sierpinski
This study presents the design of highly compact fractal MSA for wideband applications and investigates the advantages of circular patch with a slot of pentagon shape up to three iteration levels
Summary
Wireless communication system has testified enormous expansions and augmentation in the request for high data rate through wide bandwidth, Micro Strip Antenna (MSA) is used to meet that demand [1]. In [10], a miniature wideband fractal MSA for wireless applications was proposed using circle inscribed octagon and Coplanar Waveguide (CPW) feed It uses FR4 substrate with dimensions of (60 x 60) mm. Koch fractal based hexagonal patch antenna for circular polarization has been designed for ultra-wideband application as explained by [12] using microstrip inset feed and a combination of two fractal geometries of Koch and Sierpinski. Partial rectangular shape ground plane has been employed to acquire wider bandwidth This MSA is appropriate for C and X frequency band applications under IEEE and Multimedia standards. This study presents the design of highly compact fractal MSA for wideband applications and investigates the advantages of circular patch with a slot of pentagon shape up to three iteration levels.
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