volume | PIER Journals

Abstract

This paper presents a new design for wide slot circularly polarized (CP) antenna (WSCPA). The proposed design possesses much larger return loss bandwidths and CP bandwidths than existing WSCPA. The main features of the antenna structure include a modified CPW feeding line and a wide and symmetric ellipse-aperture along the diagonal axis. By properly tuning axial ratio of ellipse-aperture and parameters of feeding line, wideband return loss and CP radiations can be achieved. The measured bandwidths of 10-dB return loss and 3-dB axial ratio (AR) are as large as 112.5% (2.1-7.5 GHz) and 109% (2.3-7.8 GHz), respectively. The improvement process of the AR and S₁₁ properties is completely presented and discussed in this paper.

1. Iwasaki, H., "A circularly polarized small-size microstrip antenna with a cross slot," IEEE Trans. Antennas Propag., Vol. 44, No. 10, 1399-1401, 1996. Google Scholar

2. Wong, K. L. and Y. F. Lin, "Circularly polarized microstrip antenna with tuning stub," Electron. Lett., Vol. 34, No. 9, 831-832, 1998. Google Scholar

3. Lu, , J. H., C. L. Tang, and K. L. Wong, "Circular polarization design of single feed equilateral triangular microstrip antenna," Electron. Lett., Vol. 34, No. 4, 319-321, 1998. Google Scholar

4. Wong, K. L., J. Y. Wu, and C. K. Wu, "A circularly polarized patch-loaded square-slot antenna," Microwave Opt. Technol. Lett., Vol. 23, 363-365, 1999. Google Scholar

5. Chou, C. C., K. H. Lin, and H. L. Su, "Broadband circularly polarized cross-patch-loaded squre slot antenna," Electron. Lett., Vol. 43, No. 9, 485-486, 2007. Google Scholar

6. Sze, J. Y. and C. C. Chang, "Circularly polarized square slot antenna with a pair of inverted-L grounded strips," IEEE Antennas Wirel. Propag. Lett., Vol. 7, 149-151, 2008. Google Scholar

7. Row, J. S. and S. W. Wu, "Circularly-polarized wide slot antenna loaded with a parasitic patch," IEEE Trans. Antennas Propag., Vol. 56, No. 9, 2826-2832, 2008. Google Scholar

8. Han, T. Y., Y. Y. Chu, L. Y. Tseng, and J. S. Row, "Unidirectional circularly-polarized slot antennas with broadband operation," IEEE Trans. Antennas Propag., Vol. 56, No. 6, 1777-1780, 2008. Google Scholar

9. Sze, J. Y., J. C. Wang, and C. C. Chang, "Axial-ratio-bandwidth enhancement of asymmetric-CPW-fed circularly-polarized square slot antenna," Electron. Lett., Vol. 44, No. 18, 1048-1049, 2008. Google Scholar

10. Wong, K. L., C. C. Huang, and W. S. Chen, "Printed ring slot antenna for circular polarization," IEEE Trans. Antennas Propag., Vol. 50, No. 1, 75-77, 2002. Google Scholar

11. Row, J. S., "The design of a squarer-ring slot antenna for circular polarization," IEEE Trans. Antennas Propag., Vol. 53, No. 6, 1967-1972, 2005. Google Scholar

12. Sze, J. Y., C.-I. G. Hsu, M. H. Ho, Y. H. Ou, and M. T. Wu, "Design of circularly polarized annular-ring slot antennas fed by a double-bent microstripline," IEEE Trans. Antennas Propag., Vol. 55, No. 11, 3134-3139, 2007. Google Scholar

13. Pourahmadazar, J., C. Ghobadi, J. Nourinia, N. Felegari, and H. Shirzad slot antenna with inverted-L strips for UWB application, "Broadband CPW-fed circularly polarized square," IEEE Antennas Wirel. Propag. Lett., Vol. 10, 369-372, 2011. Google Scholar

14. Felegari, N., J. Nourinia, C. Ghobadi, and J. Pourahmadazar, "Broadband CPW-fed circularly polarized square slot antenna with three inverted-shape grounded strips," IEEE Antennas Wirel. Propag. Lett., Vol. 10, 274-277, 2011. Google Scholar

15. Chang, T. N., "Wideband circularly polarized antenna using two linked annular slots," Electron. Lett., Vol. 47, No. 13, 737-739, 2011. Google Scholar

16. Nasimuddin, Z., N. Chen, and X. M. Qing, "Symmetric-aperture antenna for broadband circular polarization," IEEE Trans. Antennas Propag., Vol. 10, No. 10, 3932-3936, 2011. Google Scholar

17. Wang, C. J. and C. M. Lin, "A CPW-fed open slot antenna for multiple wireless communication systems," IEEE Antennas Wirel. Propag. Lett., Vol. 11, 620-623, 2012. Google Scholar

18. Chang, T. N. and J. M. Lin, "Wideband circularly polarized antenna on slor-loaded ground plane," Electron. Lett., Vol. 48, No. 14, 818-819, 2012. Google Scholar

19. Lee, W. S., S. Y. Cha, K. S. Oh, and J. W. Yu, "Wideband circularly polarized planar monopole antenna array," Electron. Lett., Vol. 47, No. 25, 1358-1360, 2012. Google Scholar

20. Pan, Y. M. and K. W. Leung, "Wideband omnidirectional circularly polarized dielectric resonator antenna with parasitic strips," IEEE Trans. Antennas Propag., Vol. 60, No. 6, 2992-2997, 2012. Google Scholar

21. Li, D., P. F. Guo, Q. Dai, and Y. Q. Fu, "Broadband capacitively coupled stacked patch antenna for GNSS applications," IEEE Antennas Wirel. Propag. Lett., Vol. 11, 701-704, 2012. Google Scholar

22. Rezaeieh, S. A. and M. Kartal, "Broadband CPW-fed circularly polarized square slot antenna with inverted-L strips for wireless applications," Microwave Opt. Technol. Lett., Vol. 54, No. 6, 1399-1402, 2012. Google Scholar

23. Yang, S. S., K.-F. Lee, A. A. Kishk, and K.-M. Luk, "Design and study of wideband single feed circularly polarized microstrip antennas," Progress In Electromagnetics Research, Vol. 80, 45-61, 2008. Google Scholar

24. Lai, C.-H., T.-R. Chen, and T.-Y. Han, "Circularly-polarized reconfigurable microstrip antenna," Journal of Electromagnetic Waves and Applications, Vol. 23, No. 2-3, 195-201, 2009. Google Scholar

25. Lin, C., F.-S. Zhang, Y. Zhu, and F. Zhang, "A novel three-fed microstrip antenna for circular polarization application," Journal of Electromagnetic Waves and Applications, Vol. 24, No. 11-12, 1511-1520, 2010. Google Scholar

26. Kasabegoudar, V. G. and K. J. Vinoy, "A broadband suspended microstrip antenna for circular polarization," Progress In Electromagnetics Research, Vol. 90, 353-368, 2009. Google Scholar

27. Chen, X., G. Fu, S.-X. Gong, Y.-L. Yan, and J. Chen, "Parametric studies on the circularly polarized stacked annular-ring microstrip antenna," Progress In Electromagnetics Research C, Vol. 12, 65-77, 2010. Google Scholar

28. Tsai, C.-L., S.-M. Deng, C.-K. Yeh, and S.-S. Bor, "A novel shorted rectangular-loop antenna for circularly polarized wave operations," Journal of Electromagnetic Waves and Applications, Vol. 23, No. 10, 1323-1334, 2009. Google Scholar

29. Bai, X., X.-M. Zhang, L. Li, Q. Yang, and J. Li, "Double-side printed four rhombic-loop antenna with parasitic loops for circular polarization," Journal of Electromagnetic Waves and Applications, Vol. 23, No. 13, 1795-1802, 2009. Google Scholar

30. Kumar, C. K. and S. N. Sinha, "A patch-loaded ring-slot antenna for wide band circular polarization," Journal of Electromagnetic Waves and Applications, Vol. 23, No. 17-18, 2409-2419, 2009. Google Scholar

31. Deng, S.-M., C.-L. Tsai, M.-F. Chang, and S.-S. Bor, "A study on the non-uniform rectangle-ring slot antenna for broadband circular polarization operations," Journal of Electromagnetic Waves and Applications, Vol. 24, No. 4, 543-555, 2010. Google Scholar

32. Joseph, R., S. Nakao, and T. Fukusako, "Circular slot antennas using L-shaped probe for broadband circular polarization," Progress In Electromagnetics Research C, Vol. 18, 153-168, 2011. Google Scholar

33. Joseph, R. and T. Fukusako, "Bandwidth enhancement of circularly polarized square slot antenna," Progress In Electromagnetics Research B, Vol. 29, 233-250, 2011. Google Scholar

34. Liao, W. and Q. X. Chu, "CPW-fed square slot antenna with lightening-shaped feedline for broadband circularly polarized radiation," Progress In Electromagnetics Research Letters, Vol. 18, 61-69, 2010. Google Scholar

35. Sze, J. Y. and S.-P. Pan, "Design of broadband circularly polarized square slot antenna with a compact size," Progress In Electromagnetics Research, Vol. 120, 513-533, 2011. Google Scholar

Dr. Xi Li

Dr. Yi Wang

Dr. Ai-Qin Li

Dr. Lin Yang