Performance Analysis of Novel Compact Octagonal Shaped Fractal Antenna for Broadband Wireless Applications

Antenna plays an important role in any part of the communication system. It has to be designed very cautiously to provide improved system performance to meet the developments in wireless technologies with various design constraints such as small size, low cost, high data, low power consumption and wideband capabilities. Several efforts have been made by various investigators around the globe to amalgamate benefits of fractal structures with electromagnetic concepts and applications to reduce the size of the antenna without obstructing the performance of the antennas. This paper proposes a novel compact octagonal shaped broadband fractal antenna. The proposed antenna was designed on an inexpensive FR4-epoxy substrate and simulated using the High Frequency Structure Simulator. The antenna resonates in dual bands in 3.8 and 1 GHz with lowest return loss of − 32.80 dB and gain of 10.22 dB while maintaining the VSWR in the 2:1 level. Attempts have been made to reduce the size and improve the bandwidth using fractal concept and truncation of ground plane. The fabricated antenna was verified experimentally and the results are agreeing with the simulations. The point of attraction of this antenna is the use of single patch for broadband coverage with easy fabrication.

[1]  D. K. Srivastava,et al.  Bandwidth enhancement of modified square fractal microstrip patch antenna using gap-coupling , 2015 .

[2]  Swagata B. Sarkar.  DESIGN AND ANALYSIS OF MULTIBAND OCTAGONAL MICROSTRIP PATCH ANTENNA WITH DIFFERENT ANNULAR RING , 2016 .

[3]  K. J. Vinoy,et al.  Dual-frequency characteristics of Minkowski-square ring antennas , 2010 .

[4]  I. Adam,et al.  Design and Simulation of a Modified Minkowski Fractal Antenna for Tri-Band Application , 2010, 2010 Fourth Asia International Conference on Mathematical/Analytical Modelling and Computer Simulation.

[5]  A. D’assunção,et al.  A Minkowski fractal Frequency Selective Surface with high angular stability , 2013, 2013 SBMO/IEEE MTT-S International Microwave & Optoelectronics Conference (IMOC).

[6]  Shobhit K. Patel,et al.  Broadband compact microstrip patch antenna design loaded by multiple split ring resonator superstrate and substrate , 2017 .

[7]  Akhilesh Mohan,et al.  A multinotched octagonal shaped fractal UWB antenna , 2014 .

[8]  Raj Kumar,et al.  Design of CPW‐FEED inscribed square circular fractal antenna for UWB applications , 2011 .

[9]  Changiz Ghobadi,et al.  Novel Modified Pythagorean Tree Fractal Monopole Antennas for UWB Applications , 2011, IEEE Antennas and Wireless Propagation Letters.

[10]  S. Raghavan,et al.  Design and simulation of planar Minkowski fractal antennas , 2011, 2011 2nd International Conference on Wireless Communication, Vehicular Technology, Information Theory and Aerospace & Electronic Systems Technology (Wireless VITAE).

[11]  Nasimuddin,et al.  Analysis of circular microstrip patch antenna as an equivalent rectangular microstrip patch antenna on iso/anisotropic thick substrate , 2003 .

[12]  C. Balanis.  Antenna theory , 1982 .

[13]  D. Pozar.  Microwave Engineering , 1990 .

[14]  G. Yamuna,et al.  Crown shaped broadband monopole fractal antenna for 4G wireless applications , 2017, 2017 International Conference on Wireless Communications, Signal Processing and Networking (WiSPNET).

[15]  Akhilesh Mohan,et al.  Ultra‐wideband antenna using Minkowski‐like fractal geometry , 2014 .

[16]  Surinder Singh,et al.  A Compact Multiband Hybrid Fractal Antenna for Multistandard Mobile Wireless Applications , 2015, Wirel. Pers. Commun..

[17]  Y. Rahmat-Samii,et al.  A Miniaturized Elliptic-Card UWB Antenna With WLAN Band Rejection for Wireless Communications , 2007, IEEE Transactions on Antennas and Propagation.

[18]  Jianhua Zhang,et al.  Energy Efficient Spectrum Access in Cognitive Wireless Access Networks , 2012 .

[19]  Guangjun Wen,et al.  Compact CPW-fed planar monopole antenna with distinct triple bands for WiFi/WiMAX applications , 2012 .

[20]  Binod Kr Kanaujia,et al.  A CPW-Fed Compact UWB Microstrip Antenna , 2013, IEEE Antennas and Wireless Propagation Letters.

[21]  Jagtar Singh Sivia,et al.  Minkowski and Hilbert curves based hybrid fractal antenna for wireless applications , 2018 .

[22]  Georgios Kyriazis,et al.  Joint Access and Backhaul Power Consumption Optimization in Heterogeneous Mobile Broadband Networks , 2017 .

[23]  S. Krishnan,et al.  Determination of resonance frequency of hexagonal and half hexagonal microstrip antennas , 2007 .

[24]  S. K. Behera,et al.  A hexagonal shaped fractal antenna for UWB application , 2012, 2012 International Conference on Communications, Devices and Intelligent Systems (CODIS).

[25]  Kenneth Falconer,et al.  Fractal Geometry: Mathematical Foundations and Applications , 1990 .

[26]  M.K.A. Rahim,et al.  Analysis of Fractal Koch Dipole Antenna for UHF band application , 2008, 2008 IEEE International RF and Microwave Conference.