volume | PIER Journals

Abstract

A novel CPW-fed planar printed monopole antenna with broadband circular polarization (CP) characteristic is presented. The proposed antenna consists of a copper coin-shaped patch (CCSP) and an asymmetrical ground plane. To achieve a broadband CP wave, a vertical stub is added to the CCSP to produce orthogonal surface currents for right-hand circular polarization (RHCP). The design of the CCSP greatly increases the impedance bandwidth (IBW) of 89.2% which can cover the whole CP bandwidth of 71% completely. The measured results show that the proposed antenna has not only a broad 3-dB AR bandwidth (ARBW) of 71% (3900 MHz, 3.1-7 GHz) with respect to the CP center frequency 5.8 GHz, but also a wide 10-dB return loss bandwidth of 89.2% (5040 MHz, 2.16-7.2 GHz) centered at 5.65 GHz.

1. Sze, J. Y. and C. C. Chang, "Circularly polarized square slot antenna with a pair of inverted-L grounded strips," IEEE Antennas Wireless Propag. Lett., Vol. 7, 149-151, 2008.
doi:10.1109/LAWP.2008.921341

2. Ferrero, F., C. Luxey, G. Jacquemod, et al. "Dual-band circularly polarized microstrip antenna for satellite applications," IEEE Antennas Wireless Propag. Lett., Vol. 4, 13-15, 2005.
doi:10.1109/LAWP.2004.841622

3. Counselman, III, C. C., "Multipath-rejecting GPS antennas," Proc. IEEE, Vol. 87, 86-91, 1999.
doi:10.1109/5.736343

4. Mousavi, P., B. Miners, and O. Basir, "Wideband L-shaped circular polarized monopole slot antenna," IEEE Antennas Wireless Propag. Lett., Vol. 9, 822-825, 2010.
doi:10.1109/LAWP.2010.2066251

5. Kumar, T. and A. R. Harish, "Broadband circularly polarized printed slot-monopole antenna," IEEE Antennas Wireless Propag. Lett., Vol. 12, 1531-1534, 2013.
doi:10.1109/LAWP.2013.2291436

6. Ding, K., C. Gao, and Y. Wu, "A broadband circularly polarized printed monopole antenna with parasitic strips," IEEE Antennas Wireless Propag. Lett., Vol. 16, 2509-2516, 2017.
doi:10.1109/LAWP.2017.2728124

7. 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, 581-585, 2019.
doi:10.1109/LAWP.2019.2896900

8. Wang, C. J. and C. M. Lin, "A CPW-fed slot antenna for multiple wireless communication systems," IEEE Antennas Wireless Propag. Lett., Vol. 11, 620-623, 2012.
doi:10.1109/LAWP.2012.2203289

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, 1418-1422, 2013.
doi:10.1109/TAP.2012.2231926

10. Li, G. H., H. Q. Zhai, T. Li, and C. H. Liang, "CPW-fed S-shaped slot antenna for broadband circular polarization," IEEE Antennas Wireless Propag. Lett., Vol. 12, 619-622, 2013.
doi:10.1109/LAWP.2013.2261652

11. Chen, Q., H. Zhang, L.-C. Yang, B. Xue, and X.-L. Min, "Broadband CPW-fed circularly polarized planar monopole antenna with inverted-L strip and asymmetric ground plane for WLAN application," Progress In Electromagnetics Research C, Vol. 74, 91-100, 2017.
doi:10.2528/PIERC17021203

12. Midya, M., S. Bhattacharjee, and M. Mitra, "Compact CPW-fed circularly polarized antenna for WLAN application," Progress In Electromagnetics Research M, Vol. 67, 65-73, 2018.
doi:10.2528/PIERM18021505

13. Pourahmadazar, J., C. H. Ghobadi, J. Nourinia, et al. "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

14. Zhang, L., Y. C. Jiao, Y. Ding, et al. "CPW-fed broadband circularly polarized planar monopole antenna with improved ground-plane structure," IEEE Trans. Antennas Propag., Vol. 61, 4824-4828, 2013.
doi:10.1109/TAP.2013.2267719

15. Jan, J. Y. and C. Y. Hsiang, "Wideband CPW-fed slot antenna for DCS, PCS, 3G and bluetooth bands," IEE Electron. Lett., Vol. 42, 1377-1378, 2006.
doi:10.1049/el:20062750

16. Stutzman, W. L. and G. A. Thiele, Antenna Theory and Design, 2nd Ed., Wiley, 1998.

Dr. Tingting Chen

Dr. Jingjing Zhang

Dr. Weijiang Wang