EFFECT OF CPW EDGES CHAMFERING TO THE PERFORMANCE OF ULTRA WIDEBAND ANTENNA
DOI:
https://doi.org/10.11113/jt.v77.6287Keywords:
Chamfering, reflection coefficient, wide bandwidthAbstract
In this paper, an Ultra Wideband (UWB) antenna is presented. The antenna radiating patch is circular in shape with coplanar waveguide (CPW) feeding technique. The proposed chamfering to the outer edges of the ground plane successfully widens the -10 dB impedance bandwidth of the antenna to cover from 1.92 GHz up to 15.16 GHz (correspond to 155% fractional bandwidth). The antenna gain varies from 2 to 5 dB over the operating band. Parametrical studies have been conducted for four different conditions of the ground plane; without chamfering, chamfering on the inner edges, chamfering on the outer edges and both chamfering of inner and outer edges. The effects of distinguished chamfering conditions to antenna performance are analyzed. Â The measured and simulated results for reflection coefficients and radiation patterns (2.45 GHz, 3.5 GHz and 5.8 GHz) are presented. The corresponding realized gains are 2.14 dB, 2.85 dB and 3.4 dB respectively. The measured results satisfactorily agreed with the simulated ones. The antenna is 8 - 37 % wider bandwidth than previous research.
References
Fiske, D. 2002. New Public Safety Applications And Broadband Internet Access Among Uses Envisioned By Fcc Authorization Of Ultrawideband Technology.
FCC. 2002. First Report And Order On Ultra-Wideband Technology. Rep:Tech.
Rahim, M.K.A.,Masri, T., Majid, H.A., Ayop,. O., and Zubir, F. 2011. Design And Analysis Of Ultra Wide Band (Uwb) Planar Monopole Antenna. WSEAS Transactions on Communications. 10: 212-221.
Mandal, T., and Das, S. 2015. Design Of A CPW Fed Simple Hexagonal Shape UWB Antenna With WLAN And Wimax Band Rejection Characteristics. Journal of Computational Electronics. 14: 300-308.
Ghaderi, M.R., and Mohajeri, F. 2011. A Compact Hexagonal Wide-Slot Antenna With Microstrip-Fed Monopole For UWB Application. IEEE Antennas and Wireless Propagation Letters. 10: 682-685.
Azim, R., Islam, M.T., Mandeep, J.S., and Mobashsher, A.T. 2012. A Planar Circular Ring Ultra-Wideband Antenna With Dual Band-Notched Characteristics. Journal of Electromagnetic Waves and Applications. 26: 2022-2032.
Kumar, Raj, Naidu, V. Praveen, Kamble, Vivek, and Ram, Krishna, R.V.S. 2015. Simulation, Design of Compact Multi-band Microstrip Slot Antennas for WiMAX/WLAN and UWB Applications. Wireless Personal Communications. 80: 1175-1192.
Jose, S.M., and Lethakumary, B. 2015. CPW-Fed Step-Shaped Microstrip Antenna For UWB Applications. Microwave and Optical Technology Letters.57: 589-591.
Tripathi,S., Mohan, A., and Yadav, S. 2015. A Compact Octagonal-Shaped Fractal UWB Antenna With Sierpinski Fractal Geometry. Microwave and Optical Technology Letters. 57: 570-574.
Rao, G. Sasibhushana, Kumar, S. Srinivasa, and Pillalamarri, Ramu. 2014. Printed Planar Circular Radiating Patch Ultra Wideband Antennas. Microsystem Technologies : 1-5.
Bitchikh, M., Aksas, R., Azrar, A., and Kimouche, H. 2013. A 2.3–14 GHz UWB Planar Octagonal Antenna With Modified Ground Plane. Microwave and Optical Technology Letters. 55: 479-482.
Gautam,A.K., yadav, Swati, and Kanaujia, Binod Kr. 2013. A CPW-FED Compact Inverted L-Strip UWB Microstrip Antenna. Microwave and Optical Technology Letters. 55: 1584-1589.
Naser-Moghadasi, M.,Hafezifard, R., Sadeghzadeh, R.A., Seyyedhatami, H., and Torkamanani, M. 2012. Small Circular-Shaped UWB Antenna For Wireless Communication Applications. Microwave and Optical Technology Letters. 54: 2885-2888.
S. S. Thwin. 2013. Highly Compact UWB Printed Monopole Antennas With Different Ground Plane Structures. Microwave and Optical Technology Letters. 55: 1191-1196.
Downloads
Published
Issue
Section
License
Copyright of articles that appear in Jurnal Teknologi belongs exclusively to Penerbit Universiti Teknologi Malaysia (Penerbit UTM Press). This copyright covers the rights to reproduce the article, including reprints, electronic reproductions, or any other reproductions of similar nature.
