volume | PIER Journals

Abstract

A CPW-fed printed square slot antenna (PSSA) based on characteristic modes (CMs) theory is investigated for broadband circular polarization (CP). It consists of an I-shaped patch and CPW ground plane loaded with a rectangular stub, a pair of asymmetric inverted-L grounded strips, and a spiral slot to get CP radiation over a wide-angle range. CMs of this strip and slot loaded PSSA show that the entire structure takes participation to excite magnetic and electric modes to provide broadband performance. First six characteristic modes are excited using CPW feeding to find resonating frequencies and radiating behavior. The proposed antenna is fabricated over RO-3003 substrate material with a floor area of 20×20 mm². Experimental results showcase the broadband CP performance with wide 3-dB ARBW of 56 % (6.6-11.8 GHz) and impedance bandwidth (IBW) (|S11| ≤-10dB) about 115 % (4-11 GHz) which make it suitable for C-band and X-band wireless and satellite communication applications. The antenna has a peak gain about 5.5 dBi with good LHCP radiations in the broadside direction.

1. Gao, S. S., Q. Luo, and F. Zhu, Circularly Polarized Antennas, Wiley-IEEE Press, UK, 2013.

2. Lin, Y. F., H. M. Chen, and S. C. Lin, "A new coupling mechanism for circularly polarized annularring patch antenna," IEEE Trans. Antennas Propag., Vol. 56, 11-16, Jan. 2008.
doi:10.1109/TAP.2007.912961 Google Scholar

3. Prajapati, P. R., G. G. K. Murthy, A. Patnaik, and M. V. Kartikeyan, "Design and testing of a circularly polarisedmicrostrip antenna with fractal defected ground structure for L-band applications," IET Microw. Antennas Propag., Vol. 9, No. 11, 1179-1185, 2015.
doi:10.1049/iet-map.2014.0596 Google Scholar

4. Kumar, A., J. K. Deegwal, and M. M. Sharma, "Miniaturized wideband dual linearly and circularly polarized printed square slot antenna for multiradio wireless systems," Int. J. Electron Commun., Vol. 88, 44-51, 2018.
doi:10.1016/j.aeue.2018.03.006 Google Scholar

5. Nosrati, M. and N. Tavassolian, "Miniaturized circularly polarized square slot antenna with enhanced axial-ratio bandwidth using an antipodal Y-strip," IEEE Antennas Wireless Propag. Lett., Vol. 16, 817-820, 2016. Google Scholar

6. Pirooj, A., M. Naser-Moghadasi, F. B. Zarrabi, and A. Sharifi, "A dual band slot antenna for wireless applications with circular polarization," Progress In Electromagnetics Research C, Vol. 71, 69-77, 2017.
doi:10.2528/PIERC16111401 Google Scholar

7. Xin, Y., Q. Feng, and J. Tao, "A CPW-fed dual-band slot antenna with circular polarization," Progress In Electromagnetics Research Letters, Vol. 61, 77-83, 2016.
doi:10.2528/PIERL16051305 Google Scholar

8. Guo, J.-L., J.-N. Zhou, Y.-B. Guan, and B.-H. Sun, "A broadband circularly polarized slot antenna with a compact microstrip to CPW transition," Int. J. RF Microw. Comput. Aided Eng., Vol. 28, No. 5, e21260, 2018.
doi:10.1002/mmce.21260 Google Scholar

9. Jan, J.-Y., C.-Y. Pan, K.-Y. Chiu, and H.-M. Chen, "Broadband CPW-fed circularly-polarized slot antenna with an open slot," IEEE Trans. Antennas Propag., Vol. 61, No. 3, 1418-1422, 2013.
doi:10.1109/TAP.2012.2231926 Google Scholar

10. Pourahmadazar, J., C. Ghobadi, J. Nourinia, N. Felegari, and H. Shirzad, "Broadband CPW-fed circularly polarized square slot antenna with inverted-L strips for UWB applications," IEEE Antennas Wireless Propag. Lett., Vol. 10, 369-372, 2011.
doi:10.1109/LAWP.2011.2147271 Google Scholar

11. Sze, J.-Y., C.-G. Hsu, Z.-W. Chen, and C.-C. Chang, "Broadband CPW-fed circularly polarized square slot antenna with lightening-shaped feedline and inverted-L grounded strips," IEEE Trans. Antennas Propag., Vol. 58, No. 3, 973-977, 2010.
doi:10.1109/TAP.2009.2039335 Google Scholar

12. Midya, M., S. Bhattacharjee, and M. Mitra, "Pair of grounded L strips loaded broadband circularly polarised square slot antenna with enhanced axial ratio bandwidth," Electron. Lett., Vol. 54, No. 15, 917-918, 2018.
doi:10.1049/el.2018.1096 Google Scholar

13. Verma, M. K., B. K. Kanaujia, J. P. Saini, and P. Saini, "A novel circularly polarized gap-coupled wideband antenna with DGS for X/Ku-band applications," Electromagnetics, Vol. 39, No. 3, 186-197, 2019.
doi:10.1080/02726343.2018.1558620 Google Scholar

14. Midya, M., S. Bhattacharjee, and M. Mitra, "Broadband circularly polarized planar monopole antenna with G-shaped parasitic strip," IEEE Antennas Wireless Propag. Lett., Vol. 18, No. 4, 581-585, Apr. 2019.
doi:10.1109/LAWP.2019.2896900 Google Scholar

15. Oteng Gyasi, K., J. Li, Y. Huang, and W. Guangjun, "Broadband circularly polarized square slot antenna with a G-shaped feedline," Microw. Opt. Technol. Lett., Vol. 59, 3055-3063, 2017.
doi:10.1002/mop.30869 Google Scholar

16. Jhajharia, T., V. Tiwari, D. Yadav, S. Rawat, and D. Bhatnagar, "Wideband circularly polarised antenna with an asymmetric meandered-shaped monopole and defected ground structure for wireless communication," IET Microw. Antennas Propag., Vol. 12, No. 9, 1554-1558, Jul. 2018.
doi:10.1049/iet-map.2018.0092 Google Scholar

17. Karamzadeh, S., V. Rafii, M. Kartal, and H. Saygin, "Compact UWB CP square slot antenna with two corners connected by a strip line," Electron. Lett., Vol. 52, No. 1, 10-12, 2016.
doi:10.1049/el.2015.2817 Google Scholar

18. Han, R. and S. Zhong, "Broadband circularly-polarised chifre-shaped monopole antenna with asymmetric feed," Electron. Lett., Vol. 52, No. 4, 256-258, 2016.
doi:10.1049/el.2015.3319 Google Scholar

19. Chen, C. and E. K. N. Yung, "Dual-band dual-sense circularly-polarized CPW-fed slot antenna with two spiral slots loaded," IEEE Trans. Antennas Propag., Vol. 57, No. 6, 1829-1833, 2009.
doi:10.1109/TAP.2009.2019990 Google Scholar

20. Sadeghi, P., J. Nourinia, and C. Ghobadi, "Square slot antenna with two spiral slots loaded for broadband circular polarisation," Electron. Lett., Vol. 52, No. 10, 787-788, May 12, 2016.
doi:10.1049/el.2016.0470 Google Scholar

21. Garbacz, R. J., "Modal expansions for resonance scattering phenomena," Proc. IEEE, Vol. 53, No. 8, 856-864, 1965.
doi:10.1109/PROC.1965.4064 Google Scholar

22. Harrington, R. F. and J. R. Mautz, "The theory of characteristic modes for conducting bodies," IEEE Trans. Antennas Propag., Vol. 19, No. 5, 622-628, 1971.
doi:10.1109/TAP.1971.1139999 Google Scholar

23. Lau, B. K., D. Manteuffel, H. Arai, and S. V. Hum, "Guest editorial theory and applications of characteristic modes," IEEE Trans. Antennas Propag., Vol. 64, No. 7, 2590-2594, Jul. 2016.
doi:10.1109/TAP.2016.2579668 Google Scholar

24. Yang, X., Y. Liu, and S.-X. Gong, "Design of a wideband omnidirectional antenna with characteristic mode analysis," IEEE Antennas Wireless Propag. Lett., Vol. 17, No. 6, 993-997, 2018.
doi:10.1109/LAWP.2018.2828883 Google Scholar

25. Zhao, X., S. P. Yeo, and L. C. Ong, "Planar UWB MIMO antenna with pattern diversity and isolation improvement for mobile platform based on the theory of characteristic modes," IEEE Trans. Antennas Propag., Vol. 66, No. 1, 420-425, 2018.
doi:10.1109/TAP.2017.2768083 Google Scholar

27. Wu, W. and Y. P. Zhang, "Analysis of ultra-wideband printed planar quasi-monopole antennas using the theory of characteristic modes," IEEE Trans. Antennas Propag. Mag., Vol. 52, No. 6, 67-77, 2010.
doi:10.1109/MAP.2010.5723225 Google Scholar

28. Tran, H. H., N. Nguyen-Tron, and A. M. Abbosh, "Simple design procedure of a broadband circularly polarized slot monopole antenna assisted by characteristic mode analysis," IEEE Access, Vol. 6, 78386-78396, 2018.
doi:10.1109/ACCESS.2018.2885015 Google Scholar

29. Ghalib, A. and M. S. Sharawi, "New antenna mode generation based on theory of characteristic modes," Int. J. RF Microw. Comput. Aided Eng., e21686, 2018.
doi:10.1002/mmce.21686 Google Scholar

30. Lu, W.-J. and L. Zhu, "Wideband stub-loaded slotline antennas under multi-mode resonance operation," IEEE Trans. Antennas Propag., Vol. 63, No. 2, 818-823, 2015.
doi:10.1109/TAP.2014.2379921 Google Scholar

31. Garbacz, R. J. and R. H. Turpin, "A generalized expansion for radiated and scattered fields," IEEE Trans. Antennas Propag., Vol. 19, No. 3, 348-358, Mar. 1971.
doi:10.1109/TAP.1971.1139935 Google Scholar

Dr. Jaiverdhan Jaiverdhan

Dr. Mahendra Mohan Sharma

Dr. Rajendra Prasad Yadav

Dr. Reshmi Dhara