Antenna Performance Improvement in Elliptical Array Using RMI Method of Mutual Coupling Compensation
- 1 Department of ECE, SSNCET, Ongole, India,
- 2 ECIL, Hyderabad, India,
- 3 Departement of ECE, GIT, GITAM University, Visakhapatnam, India
Abstract
The number of wireless electronic gadgets used in mobile communication, vehicle collision avoidance system, compact radars, etc. is extremely increasing at a rapid rate. Thus, the characteristics of the antennas involved in these gadgets are to be designed very stringently so as to avoid interferences & coupling and to improve compatibility, susceptibility, etc. Compact smart antenna with improved performance is highly essential to meet this challenging scenario. Mutual coupling between various elements of an array is one of the main factors which can be considered for improvement of performance of the antenna. Influence of mutual coupling on performance of the antenna is considered in this paper and various techniques to minimize this effect are presented. Effect of mutual coupling on radiation characteristics of the antenna can be compensated employing various methods like Conventional Mutual Impedance (CMI), Receiving Mutual Impedance (RMI). Analysis is presented as comparison between the two methods for different number of elements in the array. Analysis is also presented for different geometries of the array like circular and elliptical for improved performance. The results show performance improvement in the proposed array for parameters like SNR and Speed of convergence.
- Okamoto, G.T. (2002) Smart Antenna Systems and Wireless LANs. Kluwer Academic, Santa Clara.
- Haupt, R.L. (2010) Antenna Arrays: A Computational Approach. John Wiley and Sons, Hoboken, New Jersey. http://dx.doi.org/10.1002/9780470937464
- Fenn, A.J. (2008) Adaptive Antennas and Phased Arrays for Radar and Communications. Artech House Publishers, Massachusetts Institute of Technology, Norwood, MA.
- Balanis, C.A. (2008) Modern Antenna Handbook. John Wiley and Sons, Hoboken, New Jersey, 135. http://dx.doi.org/10.1002/9780470294154
- Ioannidis, P. and Balanis, C.A. (2005) Uniform Circular Arrays for Smart Antennas. IEEE Antennas and Propagation Magazine, 47, 192-206. http://dx.doi.org/10.1109/MAP.2005.1589932
- Arrival Estimation for Antenna Arrays. Morgan & Claypool, Arizona State University, Tempe, AZ.
- Lui, H.-S. Hui, H. T. and Leong, M. S. (2008) Investigation of Direction-of-Arrival Estimation Using Uniform Linear Arrays with Different Antenna Separations and Array Apertures. Presented at the Asia Pacific Microwave Conference.
- Balanis, C.A. (1997) Antenna Theory: Analysis and Design. Wiley, New York.
- Collin, R.E. and Zucker, F.J., Eds. (1968) Antenna Theory. McGraw-Hill, New York.
- Balanis, C.A. and Ioannides, P.I. (2007) Introduction to Smart Antenna. Morgan and Claypool, Arizona.
- Singh, H., Sneha, H.L. and Jha, R.M. (2013) Mutual Coupling in Phased Arrays: A Review. International Journal of Antennas and Propagation, 2013, Article ID: 348123.
- Hopkins, G.D., Ratner, J., Traille, A. and Tripp V. (2007) Aperture Efficiency of Amplitude, Weighting Distributions for Array Antennas. 2007 IEEE Aerospace Conference, Big Sky, 3-10 March 2007, 1-9. http://dx.doi.org/10.1109/aero.2007.352856
- Cao, W.Q., Xiang, Y., Zhang, B.N., Liu, A.J., Yu, T.B. and Guo, D.S. (2011) A Low-Cost Compact Patch Antenna with Beam Steering Based on CSRR Loaded Ground. IEEE Antennas and Wireless Propagation Letters, 10, 1520-1523. http://dx.doi.org/10.1109/LAWP.2011.2181316
- Chan, S.C. and Chen, H.H. (2006) Uniform Concentric Circular Arrays with Frequency Invariant Characteristics— Theory, Design, Adaptive Beam Forming and DOA Estimation. IEEE Transactions on Signal Processing, January 2007, 165-177.
- Tvrdik, J., Pavliska, V. and Habiballa, H (2008) Stochastic Self-Adaptive Algorithms for Global Optimization— MATLAB and C++ Library. http://www1.osu.cz/home/habibal/optimization/index.html