This paper presents the design of a wideband blade shaped monopole antenna with a horizontally mounted aluminium tube on top of the blade covering 135-175 MHz frequency band using Electromagnetic Simulation software (CST Microwave StudioTM) along with a matching network whose characteristics have been evaluated by the Optimal Matching Network Identifier (OMNI) algorithm. OMNI algorithm is a search technique used in computing, to find out the optimum solution. The conventional quarter wavelength monopole antenna is a narrow band antenna with bandwidth of the order of 5% to 10% at its centre frequency. In order to increase the bandwidth of the antenna, a proper matching network has been incorporated along with it. Toroidal inductor based matching networks have been designed, and their characteristics are evaluated using Optimal Matching Network Identifier (OMNI) program in MATLAB software. By consolidating MATLAB and CST simulated results, the antenna prototype along with the optimal matching network has been practically implemented, and corresponding results have been verified. The details of simulated and measured results are also included. The proposed antenna finds numerous applications in various wideband communication systems.
2. Chen, W.-K., Broadband Matching: Theory and Implementations, 2nd Ed., World Scientific, Singapore, 1988.
doi:10.1142/0346
3. Chen, W.-K., "Explicit formulas for the synthesis of optimum broad-band impedance-matching networks," IEEE Trans. on Circuits and Systems, Vol. 24, No. 4, 157-169, Apr. 1977.
doi:10.1109/TCS.1977.1084324
4. Bowman, D. F. and E. F. Kuester, "Impedance matching, broadbanding, and baluns," Antenna Engineering Handbook, John L. Volakis, Ed., 4th Edition, 52-1-52-31, McGraw Hill, 2007.
5. Youla, D. C., "A new theory of broadband matching," IEEE Trans. Circuit Theory, Vol. 11, 30-50, Mar. 1964.
doi:10.1109/TCT.1964.1082267
6. Yang, S. N., H. Y. Li, M. Goldberg, X. Carcelle, F. Onado, and S. M. Rowland, "Broadband impedance matching circuit design using numerical optimization techniques and field measurements," 2007 IEEE International Symposium on Power Line Communications and Its Applications, ISPLC'07, 425-430, Mar. 26-28, 2007.
7. Gilat, A., MATLAB: An Introduction with Applications, John Wiley and Sons, 2004.
8. Higham, D. J. and N. J. Higham, MATLAB Guide, 2nd Ed., Siam, 2005.
doi:10.1137/1.9780898717891
9. The MathWorks Inc., MATLAB 7.0 (R14SP2), The MathWorks Inc., 2005.
10. Chapman, S. J., MATLAB Programming for Engineers, Thomson, 2004.
11. Balanis, C. A., Antenna Theory, Analysis and Design, 3rd Ed., John Wiley and Sons, 2005.
12. Ahirwar, S. D., C. Sairam, and A. Kumar, "Broadband blade monopole antenna covering 100-2000 MHz frequency band," 2009 Applied Electromagnetics Conference (AEMC), 1-4, 2009.
13. Sairam, C., T. Khumanthem, S. Ahirwar, and S. Singh, "Broadband blade antenna for airborne applications," 2011 India Conference (INDICON), 1-4, 2011.
14. Wunsch, D. A., et al., "A closed-form expression for the driving-point impedance of the small inverted L antenna," IEEE Transactions on Antennas and Propagation, Vol. 44, No. 2, 236-242, Feb. 1996.
doi:10.1109/8.481653
15. Rahim, T., A. Wahab, and J. Xu, "Open ended dielectric filled slot blade antenna design with coaxial feed for airborne applications," IET, 978-1-78561-038-7, Hangzhou, Oct. 14-16, 2015.
16. Agrawall, N. P., et al., "Wide-band planar monopole antennas," IEEE Transactions on Antennas and Propagation, Vol. 46, No. 2, 294-295, Feb. 1998.
doi:10.1109/8.660976
17. Akhoondzadeh-Asl, L., J. Hill, J.-J. Laurin, and M. Riel, "Novel low profile wideband monopole antenna for avionics applications," EEE Transactions on Antennas and Propagation, Vol. 61, No. 11, 5766-5770, Nov. 2013.
doi:10.1109/TAP.2013.2277615
18. Baratta, I. A. and C. B. Andrade, "Installed performance assessment of blade antenna by means of the infinitesimal dipole model," IEEE Latin America Transactions, Vol. 14, No. 2, Feb. 2016.
Submit
