volume | PIER Journals

Abstract

This paper reports the design and performance of a compact planar arrangement of concentric rings designed with defected ground plane. The radiating circular patch and ground plane of antenna are modified in several steps to achieve a broadband circularly polarized antenna. In each stage of modification, antenna is simulated by applying CST Microwave Studio simulator, and finally, a prototype is developed and tested in free space. The developed prototype efficiently operates at frequencies 2.34 GHz and 4.41 GHz, and provides an overall impedance bandwidth close to 2.31 GHz or 67.45% with respect to central frequency 3.425 GHz. This antenna provides nearly flat gain in the desired frequency band with maximum measured gain close to 2.94 dBi at frequency 3.02 GHz. It also provides circularly polarized radiations in the frequency bands extended from 2.67 to 3.05 GHz and 3.44 to 3.57 GHz. The co-polar and cross-polar radiation patterns of the antenna in azimuth and elevation planes are obtained at frequencies 2.316 GHz and 4.41 GHz. The proposed antenna can be used for mobile and lower bands of Wi-Max and UWB communication systems.

1. Garg, R., P. Bhartia, I. J. Bahl, and A. Ittipiboon, Microstrip Antenna Design Handbook, Artech House, 2001.

2. James, J. R., Handbook of Microstrip Antenna, Peter Peregrinus Ltd., 1989.

3. Hsu, C.-H., C.-H. Lai, and Y.-S. Chang, "A compact planar microstrip-fed feed patch antenna using high permittivity substrate," PIERS Proceedings, 239-241, Suzhou, China, Sep. 12-16, 2011. Google Scholar

4. Wong, K. L., Compact and Broadband Microstrip Antennas, J. Wiley and Sons, 2002.
doi:10.1002/0471221112

5. Sharma, V., S. Shekhawat, V. K. Saxena, J. S. Saini, K. B. Sharma, B. Soni, and D. Bhatnagar, "Right isosceles triangular microstrip antenna with narrow L-shaped slot," Microwave Opt. Technol. Lett., Vol. 51, No. 12, 3006-3010, Dec. 2009.
doi:10.1002/mop.24781 Google Scholar

6. Hsu, W. H. and K. L. Wong, "Broadband aperture-coupled shorted patch antenna," Microwave Opt. Technol. Lett., Vol. 28, 306-307, Mar. 5, 2001. Google Scholar

7. Shekhawat, S., P. Sekra, D. Bhatnagar, V. K. Saxena, and J. S. Saini, "Stacked arrangement of rectangular microstrip patches for circularly polarized broadband performance," IEEE Antennas and Wireless Propagation Letters, Vol. 9, 910-913, 2010.
doi:10.1109/LAWP.2010.2076361 Google Scholar

8. Anguera, J., L. Boada, C. Puente, C. Borja, and J. Soler, "Stacked H-shaped microstrip patch antenna," IEEE Transactions on Antennas and Propagation, Vol. 52, No. 4, 983-993, 2004.
doi:10.1109/TAP.2004.825812 Google Scholar

9. Anguera, J., G. Font, C. Puente, C. Borja, and J. Soler, "Multifrequency microstrip patch antenna using multiple stacked elements," IEEE Microwave and Wireless Component Letters, Vol. 13, No. 3, 123-124, 2003.
doi:10.1109/LMWC.2003.810126 Google Scholar

10. Davidson, S. E., S. A. Long, and W. F. Richards, "Dual-band microstrip antennas with monolithic reactive loading," Electron. Lett., Vol. 21, No. 20, 936-937, 1985.
doi:10.1049/el:19850662 Google Scholar

11. Anguera, J., C. Puente, and C. Borja, "Dual frequency broadband microstrip antenna with a reactive loading and stacked elements," Progress In Electromagnetics Research Letters, Vol. 10, 1-10, 2009.
doi:10.2528/PIERL09040704 Google Scholar

12. Wong, K. L., J. S. Kuo, and T. W. Chiou, "Compact microstrip antennas with slots loaded in the ground plane," 11th International Conference on Antennas and Propagation, No. 480, 623-626, Apr. 2001.
doi:10.1049/cp:20010364 Google Scholar

13. Anguera, J., I. Sanz, J. Mumbrú, and C. Puente, "Multi-band handset antenna with a parallel excitation of PIFA and slot radiators," IEEE Transactions on Antennas and Propagation, Vol. 58, No. 2, 348-356, 2010.
doi:10.1109/TAP.2009.2038183 Google Scholar

14. Wu, C. K. and K. L. Wong, "Broadband microstrip antenna with directly coupled and gap-coupled parasitic patches," Microwave Opt. Technol. Lett., Vol. 22, 348-349, Sep. 5, 1999. Google Scholar

15. Huang, C. Y., J. Y. Wu, C. F. Yang, and K. L. Wong, "Gain enhanced compact broad band microstrip antenna," Electron. Lett., Vol. 34, 138-139, 1998.
doi:10.1049/el:19980167 Google Scholar

16. Zhou, W. and P. F. Wahid, "Analysis of microstrip antennas on finite ground planes," Microwave Opt. Technol. Lett., 204-207, 1997.
doi:10.1002/(SICI)1098-2760(199707)15:4<204::AID-MOP5>3.0.CO;2-J Google Scholar

17. Guha, D., M. Biswas, and Y. M. M. Antar, "Microstrip patch antenna with defected ground structure for cross polarization suppression," IEEE Antennas and Wireless Propagation Letters, Vol. 4, 455-458, 2005.
doi:10.1109/LAWP.2005.860211 Google Scholar

18. Gautam, A. K., S. Yadav, and B. K. Kanaujia, "A CPW-fed compact UWB microstrip antenna," IEEE Antennas and Wireless Propagation Letters, Vol. 12, 151-154, 2013.
doi:10.1109/LAWP.2013.2244055 Google Scholar

Dr. Neelam Choudhary

Dr. Ajay Tiwari

Dr. Jaswant Singh Saini

Dr. Virender Kumar Saxena

Dr. Deepak Bhatnagar