PIER C
 
Progress In Electromagnetics Research C
ISSN: 1937-8718
Home | Search | Notification | Authors | Submission | PIERS Home | EM Academy
Home > Vol. 74 > pp. 91-100

BROADBAND CPW-FED CIRCULARLY POLARIZED PLANAR MONOPOLE ANTENNA WITH INVERTED-L STRIP AND ASYMMETRIC GROUND PLANE FOR WLAN APPLICATION

By Q. Chen, H. Zhang, L.-C. Yang, B. Xue, and X.-L. Min

Full Article PDF (2,305 KB)

Abstract:
A novel broadband circularly polarized planar monopole antenna fed by coplanar waveguide (CPW) is proposed and fabricated. The proposed antenna consists of a rectangular monopole, an inverted-L strip and an asymmetric ground plane with cutting a horizontal slit on the right ground plane. Firstly, a narrow circularly polarized (CP) radiation at the upper band can be achieved by utilizing the asymmetric ground plane. Then, an inverted-L strip is introduced to obtain broadband CP characteristic matched with wide impedance bandwidth. The measured results demonstrate that a 10-dB bandwidth of 58.8% from 4.8 to 8.8 GHz and a 3-dB axial-ratio bandwidth (ARBW) of 47.8% from 5.375 to 8.75 GHz can be achieved which can completely cover the WLAN (5.725-5.85 GHz) band. Additionally, a 10-dB impedance bandwidth of 24% (3.3-4.2 GHz) with linear polarization is also obtained which can completely cover the WiMAX (3.3-3.7 GHz) bands. In additional, to explain the mechanism of dual-band CP operation, the analysis of magnetic fields distributions and a parametric study of the design are given. Compared to other recent works, a simpler structure, wider axial ratio and impedance bandwidths and a more compact size are the key features of the proposed antenna.

Citation:
Q. Chen, 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

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

2. Liu, Y. W. and P. Hsu, "Broadband circularly polarized square slot antenna fed by co-planar waveguide," Electron. Lett., Vol. 49, No. 16, 976-977, 2013.
doi:10.1049/el.2013.0905

3. Chen, Y. B., Y. C. Jiao, and F. S. Zhang, "Polarization reconfigurable cpw-fed square slot antenna using pin diodes," Microw. Opt. Technol. Lett., Vol. 49, No. 6, 1233-1236, 2007.
doi:10.1002/mop.22476

4. Augustin, G. and T. A. Denidni, "Coplanar waveguide-fed uniplanar trapezoidal antenna with linear and circular polarization," EEE Trans. Antennas Propag., Vol. 60, No. 5, 2522-2526, May 2012.
doi:10.1109/TAP.2012.2189724

5. Wang, C. J. and K. L. Hisao, "CPW-fed monopole antenna for multiple system integration," IEEE Trans. Antennas Propag., Vol. 62, No. 2, 1007-1011, Feb. 2014.
doi:10.1109/TAP.2013.2290551

6. Ghobadi, A. and M. Dehmollaian, "A printed circularly polarized Y-shaped monopole antenna," IEEE Antennas Wireless Propag. Lett., Vol. 11, 22-25, 2012.
doi:10.1109/LAWP.2011.2181314

7. Li, G., H. Zhai, T. Li, L. Li, and C. Liang, "A compact antenna with broad bandwidth and quad-sense circular polarization," IEEE Antennas Wireless Propag. Lett., Vol. 11, 791-794, 2012.

8. Ren, H., Y. Yu, and Z. Shen, "Broadband circularly-polarized antenna consisting of four notch slot radiators," Electron. Lett., Vol. 48, No. 23, 1447-1449, Nov. 2012.
doi:10.1049/el.2012.2635

9. Chen, Y. and C. Wang, "Characteristic-mode-based improvement of circularly polarized U-slot and E-shaped patch antennas," IEEE Antennas Wireless Propag. Lett., Vol. 11, 1474-1477, 2012.
doi:10.1109/LAWP.2012.2231046

10. Rezaeieh, S. A. and A. Abbosh, "Broadband CPW-fed slot antenna with circular polarization for on-body applications at ISM band," Proc. Asia-Paci c Microw. Conf., 1184-1186, Dec. 4-7, 2012.

11. Li, G., H. Zhai, T. Li, L. Li, and C. 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

12. Hu, Y. J., W. P. Ding, W. M. Ni, and W. Q. Cao, "Broadband circularly polarized cavity-backed slot antenna array with four linearly polarized disks located in a single circular slot," IEEE Antennas Wireless Propag. Lett., Vol. 11, 496-499, 2012.

13. 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

14. Ahdi Rezaeieh, S., A. Abbosh, and M. A. Antoniades, "Compact CPW-fed planar monopole antenna with wide circular polarization bandwidth," IEEE Trans. Antennas Propag., Vol. 12, 1295-1298, 2013.
doi:10.1109/LAWP.2013.2284003

15. Hu, B., Nasimuddin, and Z. Shen, "Moon-shaped printed monopole antenna for wideband circularly polarized radiation," Proc. IEEE-APS Topical Conf. on Antennas and Propagation in Wireless Communications (APWC), 825-827, 2013.
doi:10.1109/APWC.2013.6624912

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

17. Chang, H.-W. and S.-Y. Mu, "Semi-analytical solutions of the 3-D homogeneous Helmholtz Equation by the method of connected local fields," Progress In Electromagnetics Research, Vol. 142, 159-188, 2013.
doi:10.2528/PIER13060906

18. Sen, S. G., "A semi-analytical method to calculate the entries of the method of moments matrix for the mixed potential integral equation of a source reconstruction problem," Progress In Electromagnetics Research M, Vol. 41, 149-158, 2015.
doi:10.2528/PIERM15012602

19. Li, Y. L. and S. Sun, "Full-wave semi-analytical modeling of planar spiral inductors in layered media," Progress In Electromagnetics Research, Vol. 149, 45-54, 2014.
doi:10.2528/PIER14072404

20. Yang, S. L. S., A. A. Kishk, and K. F. Lee, "Wideband circularly polarized antenna with L-shaped slot," EEE Trans. Antennas Propag., Vol. 56, No. 6, 1780-1783, Jun. 2008.
doi:10.1109/TAP.2008.923340


© Copyright 2010 EMW Publishing. All Rights Reserved