volume | PIER Journals

Abstract

Many applications of microstrip antenna are rendered by their inherent narrow bandwidth. In this paper a new approach is proposed to design inset feed microstrip antenna with slots in it to improve the antenna bandwidth. This paper deals with the design of slotted microsrip antenna on a substrate of thickness 1.588 mm that gives wideband characteristics using ANN. The illustrated patch antenna gives enhanced bandwidth as compared to antenna with out slots of the same physical dimensions. In the present work an Artificial Neural Network (ANN) model is developed to analyse the bandwidth of the example antenna. The Method of Moments (MOM) based IE3D software has been used to generate training and test data for the ANN. The example antenna is also designed physically with glass epoxy substrate with ε_r = 4.7 for few results for testing the artificial neural network model. The different variants of training algorithm of MLPFFB-ANN (Multilayer Perceptron feed forward back propagation Artificial Neural Network) and RBF -ANN (Radial basis function Artificial Neural Network) has been used to implement the network model. The results obtained from artificial neural network when compared with experimental and simulation results, found satisfactory and also it is concluded that RBF network is more accurate and fast as compared to different variants of backpropagation training algorithms of MLPFFBP.

1. Zhang, Q. J. and K. C. Gupta, Neural Networks for RF and Microwave Design, Artech House Publishers, 2000.

2. Watson, P. M. and K. C. Gupta, "Design and optimization of CPW circuits using EM ANN models for CPW components," IEEE Transactions on Microwave Theory and Techniques, Vol. 45, No. 12, 2515-2523, Dec. 1997.
doi:10.1109/22.643868 Google Scholar

3. Zaabab, A. H., Q. J. Zhang, and M. Nakhla, "Analysis and optimization of microwave circuits & devices using neural network models," IEEE MTT-S Digest, 393-396, 1994. Google Scholar

4. Naser-Moghaddasi, M., P. D. Barjoei, and A. Naghsh, "Heuristic artificial neural network for analysing and synthesizing rectangular microstrip anteena," IJCSNS International Journal of Computer Science and Network Security, Vol. 7, No. 12, Dec. 2007. Google Scholar

5. Turker, N., F. GÄunes, and T. Yildirim, "Artificial neural design of microstrip antennas," Turk. J. Elec. Engin., Vol. 14, No. 3, 2006. Google Scholar

6. Peik, S. E., G. Coutts, and R. R. Mansour, "Application of neural networks in microwave circuit modelling," Electrical and computer Engineering, 1998, IEEE Canadian Conference, Vol. 2, 928-931, May 24--28, 1998. Google Scholar

7. Devi, S., D. C. Panda, and S. S. Pattnaik, "A novel method of using artificial neural networks to calculate input impedance of circular microstrip antenna," Antennas and Propagation Society International Symposium, Vol. 3, 462-465, June 16--21, 2002. Google Scholar

8. Mishra, R. K. and A. Patnaik, "Neural network-based CAD model for the design of square-patch antennas," IEEE Trans. on Antennas Propagat., Vol. 46, No. 12, 1890-1891, Dec. 1998.
doi:10.1109/8.743842 Google Scholar

9. Patnaik, A., R. K. Mishra, G. K. Patra, and S. K. Dash, "An artificial neural network model for effective dielectric constant of microstrip line," IEEE Trans. on Antennas Propagat., Vol. 45, No. 11, 1697, Nov. 1997.
doi:10.1109/8.650084 Google Scholar

10. Karaboga, D., K. Guney, S. Sagiroglu, and M. Erler, "Neural computation of resonant frequency of electrically thin and thick rectangular microstrip antennas," IEEE Proceedings --- Microwaves, Antennas and Propagation, Vol. 146, No. 2, 155-159, Apr. 1999.
doi:10.1049/ip-map:19990136 Google Scholar

11. Guney, K. and N. Sarikaya, "Resonant frequency calculation for circular microstrip antennas with a dielectric cover using adaptive network-based fuzzy inference system optimized by various algorithms," Progress In Electromagnetic Research, Vol. 72, 279-306, 2007.
doi:10.2528/PIER07031302 Google Scholar

12. Pattnaik, S. S., D. C. Panda, and S. Devi, "Radiation resistance of coax-fed rectangular microstrip antenna using artificial neural networks," Microwave and Optical Technology Lett., Vol. 34, No. 1, 51-53, Jul. 5, 2002.
doi:10.1002/mop.10370 Google Scholar

13. James, J. R., P. S. Hall, and C.Wood, Microstrip Antenna Theory and Design, Peter Peregrines (IEE), 1981.

14. Guney, K., "Resonant frequency of a tuneable rectangular microstrip patch antenna," Microwave and Optical Technology Lett., Vol. 7, 581-585, 1994.
doi:10.1002/mop.4650071216 Google Scholar

15. Herscovici, N., "New consideration in the design of microstrip antenna," IEEE Trans. on Antennas Propagat., Vol. 46, No. 6, 807-812, Jun. 1998.
doi:10.1109/8.686766 Google Scholar

16. Pattnaik, S. S., G. Lazzi, and O. P. Gandhi, "On the use of wideband wide band high gain microstrip antenna for mobile telephones," IEEE Transaction on Antenna and Propagation Magzine, Vol. 40, No. 1, 88-90, Feb. 1998.
doi:10.1109/74.667369 Google Scholar

17. Palit, S. K. and N. Vijayasinghe, "Broadband microstrip antenna design," China J. Radio Sci., 670-673, 1995. Google Scholar

18. Croq, F., G. Kossiavas, and A. Papienik, "Stacked resonators for bandwidth enhancement: A comparison of two feeding techniques," IEEE Proc. Microwave Antennas Propagation, Vol. 40, No. 4, 303-308, 1993.

19. Sanchez-Hernadaz, D. and I. D. Robertson, "A survey of broadband microstrip patch antennas," Microwave Journal, 60-84, Sept. 1996. Google Scholar

20. Lee, K. F., K. M. Luk, K. F. Tong, Y. L. Yung, and T. Huyuh, "Experimental study of the rectangular patch with a U-shaped slot," IEEE International Symposium on Antennas and Propagation Digest, 10-13, Jul. 21--26, 1996.

21. Palit, S. K. and A. Hamadi, "Design and development of wideband and dual band microstrip antenna," IEEE Proceedings --- Microwave, Antennas, and Propagation, Vol. 146, No. 1, 1094-1100, Feb. 1999.

22. Robert, B., T. Razvan, and A. Papernik, "Compact patch antenna integrates monolithic amp," Microwave & RF, Vol. 34, No. 4, 115-125, Mar. 1995. Google Scholar

23. Palit, S. K. and A. Hamadi, "Design and development of wideband and dual microstrip antennas," IEEE Proceedings --- Microwaves, Antenna and Propagation, Vol. 146, No. 1, 35-39, Feb. 1999.

24. Yong, F., X. Zhang, X. Ye, and Y. Rahmat-Samii, "Wide-band E-shaped patch antennas for wireless communication," IEEE Trans. on Antennas Propagat., Vol. 49, No. 7, 1094-1100, Jul. 2001.
doi:10.1109/8.933489 Google Scholar

25. Balanis, C. A., Antenna Theory, John Wiley & Sons, Inc., 1997.

26. Pozar, D. M., "Microstrip antenna," Proc. IEEE, Vol. 80, 79-81, 1992.

27. Hassoun, M. H., Fundamentals of Artificial Neural Networks , Chapter 8, New Delhi, Prentice Hall of India, 1999.

28. Haykin, S., Neural Networks, 2nd edition, pHI, 2003.

Dr. Vandana Vikas Thakery

Prof. Pramod Kumar Singhal