Wideband High Gain Fractal Antenna for Wireless Applications

Abstract

Abstract-The paper focuses on design and analysis of hexagon inspired fractal geometry and defected ground plane to evaluate the performance of patch antenna for wireless applications. It also emphasizes increasing the antenna bandwidth by incorporating novel rectangular Defected Ground Surface (DGS) structure with CPW feed. In the proposed work, antenna is simulated and fabricated for wireless applications using FR4 as the substrate, and it covers wide band with high gain. The antenna resonates at frequencies of 3.79 GHz and 5.5 GHz with measured return losses of −25.02 dB and −26.03 dB, respectively, making the proposed antenna suitable for Wi-Fi, cordless phone, wireless devices and wireless sensor networks applications.

Design and Analysis of Sierpinski Carpet Fractal Antenna for UHF Spaced Antenna Wind Profiler Radar

“…This process is repeated for the eight remaining square microstrip patch portions as to get iteration 2 which is shown in Fig.6. The Sierpinski Carpet fractal is generated by doing iterative process many number of times [8][9][10][11]. In the design of conventional Rectangular microstrip patch antenna with sierpinski carpet geometry, aluminium metal is used as patch as well as ground with air used as dielectric substrate which is shown in Fig.…”

Ultra Wide Band CPW Fed Patch Antenna With Fractal Elements and DGS for Wireless Applications

“…The authors of both the papers used CPW feeding technique. Desai et al [2] obtained a higher bandwidth of 135% after adding a defective ground structure which was better than that of [3]. Tripathi et al [4] reported a hexagonal fractal antenna using Koch geometry for DGS and obtained a bandwidth of 122%.…”

“…As per FCC, the UWB range is defined from 3.1 GHz to 10.6 GHz [1]. The ultra-wideband (UWB) patch antennas have advantages for its conformability, wideband operability, high data rate, low power consumption, robustness to fading, response to high speed pulses, small size, light weight, and low cost [1][2][3][4][5]. Many techniques have been reported in the literature for enhancing patch antenna bandwidth and multifrequency operation.…”

“…Fractal elements are space-filling self-repeating structures that can be used in the form of Koch island, Sierpinski Carpet, Sierpinski gasket, Minkowski loop, Hilbert Curve, branches of tree, rough terrains, etc. In some recently published works Desai et al [2] and Fallahi and Atlasbaf [3] used hexagonal shaped fractal geometries to obtain multiresonance and wideband response. The authors of both the papers used CPW feeding technique.…”

High Gain Flexible CPW Fed Fractal Antenna for Bluetooth/Wlan/Wpan/Wimax Applications

“…In literature, fractal antennas are widely accepted as a method for increasing the impedance bandwidth of the antennas by using various natural and artificially shaped geometries which are repeated in iterations [6]. In [7], a wideband antenna using fractal geometry is proposed for wireless applications which use hexagonally shaped fractal resonating in the range of (1.31 GHz-6.81 GHz). Another multiband fractal antenna using E shaped fractal is proposed for applications in mobile communication working in LTE/WWAN [8,9].…”