Design and Analysis of The IFA Bandwidth Enhancement for 639 MHz UHF Channel

 
 
 
  • Abstract
  • Keywords
  • References
  • PDF
  • Abstract


    Bandwidth characteristic enhancement of the antenna is engaging and challenging problems for antenna engineers. The design of the 639 MHz frequency of the low-profile inverted F antenna (IFA) on a finite conducting plane proposed and its characteristics are analyzed numerically. The IFA is typically a narrowband antenna, due to the bandwidth enhancement the antenna parameters are considered. When the size of the conducting plane is 115 mm by 230 mm, the return loss bandwidth (-10 dB) becomes 2.4 % and the gain becomes 6.58 dB. The results found that when the height of the antenna reduced the return loss bandwidth becomes narrower. However, the return loss bandwidth can be improved by extending the length of the short stub. The gains of IFA are more than 6.5 dB in all the calculation conditions.  This means that the gain characteristics are not significantly affected by variations in short stub length, the antenna heights and the size of conducting plane. The results show that by extending the height of the antenna and enlarge the size of the conducting plane improved the bandwidth enhancement of the IFA. The proposed inverted F antenna is promising for the UHF channel receiver.

     


  • Keywords


    Bandwidth Enhancement; Inverted F Antenna; Method of Moment; Short Stub; WIPL-D

  • References


      [1] A. T. Gobien, Investigation of low profile antenna designs for ue in hand-held radios, in Doctoral Disertation, Virginia Tech, (1997), pp. 98-103.

      [2] H. Kuboyama, Y. Tanaka, K. Sato, K. Fujimoto and K. Hirasawa, “Experimental results with mobile antennas having cross-polarization components in urban and rural areas”, IEEE Transactions on Vehicular Technology, vol. 39, no. 2, pp. 150-160.

      [3] K. Fujimoto, A. Henderson, K. Hirasawa and J. R. James, Small Antennas. England: Research Studies Press, 1987.

      [4] K. Ogawa and T. Uwano, “A diversity antenna for very small 800-MHz band portable telephones”, IEEE Transactions on Antennas and Propagation, Vol. 42, No. 9, pp. 1342-1345.

      [5] T. Fujimoto and J. Taguri, “Wideband printed inverted-F antenna with unidirectional radiation pattern”, IEEE-APS Topical Conference on Antennas and Propagation in Wireless Communications (APWC), (2016), pp. 181-182.

      [6] T. Fujimoto and T. Yoshida, “A printed inverted-F antenna for circular polarization”, IEEE International Symposium on Antennas and Propagation (APSURSI), (2016), pp. 2171-2172.

      [7] Y. Saita, T. Ito, N. Michishita and H. Morishita, “Low-frequency inverted-F antenna on hemispherical ground plane”, in International Symposium on Antennas and Propagation (ISAP), (2014), pp. 183-184.

      [8] N. K. Nikolova, “Other Practical Dipole/Monopole Geometries Matching Techniques for Dipole/Monopole Feeds”, Department of Electrical and Computer Engineering, ITB/A308 McMaster University, (2003), pp. 15-16.

      [9] C. A. Ballanis, Antenna theory analysis and design (4th ed). New York: John Willey and Son's Inc, 1997.

      [10] W. L. Stutzman and G. A. Thiele, Antenna theory and design (3rd ed). New York: John Willey and Son's Inc, 2012.

      [11] W. Sinnema, Electronic transmission technology: lines, waves, and antennas (Vol. 330). Englewood Cliffs, NJ: Prentice-Hall, 1979.

      [12] E. Rohadi and M. Taguchi, “Ultra-low profile, unbalanced fed inverted F antenna for 2.45 GHz wireless communication system”, Proceedings of URSI International Symposium on Electromagnetic Theory (EMTS), (2013), pp. 585-588.

      [13] E. Rohadi and M. Taguchi, “Ultra Low Profile Antenna for 2.45 GHz Wireless Communication”, Proceedings of IEEE International Conference on Communication, Network and Satellite (ComNetSat), (2012), pp. 103-107.

      [14] T. A. Milligan, Modern Antenna Design (2nd ed). John Wiley & Sons, (2005), pp. 67-72.

      [15] J. Shao, Mathematical Statistic (2nd ed). New York: Springer-Verlag, (2003), pp. 207-212.

      [16] B. M. Kolundžija, et al. WIPL-D Microwave: Circuit and 3D EM Simulation for RF & Microwave Applications: Software and User's Manual. WIPL-D. Artech House, Inc: Norwood, MA, 2005.

      [17] N. Khan, “Design of Planar Inverted-F Antenna”, International Journal of Advanced Technology in Engineering and Science, Vol. 2, No. 5, (2014), pp. 20-31.

      [18] D. Liu and B. Gaucher, “The inverted-F antenna height effects on bandwidth”, IEEE Antennas and Propagation Society International Symposium, Vol. 2, (2005) pp. 367-370.

      [19] G. Marrocco, “The art of UHF RFID antenna design: Impedance-matching and size-reduction techniques”, IEEE Antennas and Propagation Magazine, Vol. 50, No. 1, (2008), pp. 66-79.


 

View

Download

Article ID: 26864
 
DOI: 10.14419/ijet.v7i4.44.26864




Copyright © 2012-2015 Science Publishing Corporation Inc. All rights reserved.