volume | PIER Journals

Abstract

A wideband right-hand circularly polarized (RHCP) crossed-dipole antenna with wide impedance bandwidth (IBW) and axial ratio bandwidth (ARBW) is proposed in this paper. A pair of dipoles with modified arms and a novel back-cavity are introduced to enhance both the IBW and ARBW of a conventional crossed-dipole antenna. Simulated and measured results indicate that the proposed structure can improve the circularly polarized (CP) characteristics significantly. The IBW (|S₁₁|<-10 dB) and ARBW (AR<3 dB) are 100% and 89.1%, respectively. The total size is 0.4λ×0.4λ×0.15λ (λ being the corresponding free-space wavelength at the frequency of 2.2 GHz). With both the excellent CP operating bandwidth and compact size, the proposed antenna is attractive for broadband wireless communication systems.

1. Baik, J. W., K. J. Lee, W. S. Yoon, and T. H. Lee, "Circularly polarized printed crossed dipole antennas with broadband axial ratio," Electronics Letters, Vol. 44, No. 13, 785-786, 2008.
doi:10.1049/el:20080794 Google Scholar

2. Baik, J. W., T. H. Lee, S. Pyo, S. M. Han, J. Jeong, and Y. S. Kim, "Broadband circularly polarized crossed dipole with parasitic loop resonators and its arrays," IEEE Transactions on Antennas and Propagation, Vol. 59, No. 1, 80-88, 2011.
doi:10.1109/TAP.2010.2090463 Google Scholar

3. Ta, S. X. and I. Park, "Crossed dipole loaded with magneto-electric dipole for wideband and wide-beam circularly polarized radiation," IEEE Antennas and Wireless Propagation Letters, Vol. 14, 358-361, 2015.
doi:10.1109/LAWP.2014.2363944 Google Scholar

4. He, Y., W. He, and W. Hang, "A wideband circularly polarized cross-dipole antenna," IEEE Antennas and Wireless Propagation Letters, Vol. 13, 67-70, 2014. Google Scholar

5. Tran, H. H. and I. Park, "Wideband circularly polarized cavity-backed asymmetric crossed bowtie dipole antenna," IEEE Antennas and Wireless Propagation Letters, Vol. 15, 358-361, 2016.
doi:10.1109/LAWP.2015.2445939 Google Scholar

6. Yang, W., Y. Pan, S. Zheng, and P. Hu, "A low profile wideband circular polarized crossed-dipole antenna ," IEEE Antennas and Wireless Propagation Letters, Vol. 16, 2126-2129, 2017.
doi:10.1109/LAWP.2017.2699975 Google Scholar

7. Xu, R., J. Y. Li, and K. Wei, "A broadband circularly polarized crossed-dipole antenna," IEEE Transactions on Antennas and Propagation, Vol. 64, No. 10, 4509-4513, 2016.
doi:10.1109/TAP.2016.2588523 Google Scholar

8. Feng, G., L. Chen, X. Wang, X. Xue, and X. Shi, "Broadband circularly polarized crossed bowtie dipole antenna loaded with parasitic elements," IEEE Antennas and Wireless Propagation Letters, Vol. 17, 114-117, 2017. Google Scholar

9. Zhang, L., S. Gao, Q. Luo, P. R. Young, Q. Li, and Y. L. Geng, "Single-feed ultra-wideband circularly polarized antenna with enhanced front-to-back ratio," IEEE Transactions on Antennas and Propagation, Vol. 64, No. 1, 355-360, 2015.
doi:10.1109/TAP.2015.2501844 Google Scholar

10. Saurav, K., D. Sarkar, A. Singh, and K. V. Srivastava, "Multiband circularly polarized cavity-backed crossed dipole antenna," IEEE Transactions on Antennas and Propagation, Vol. 63, No. 10, 4286-4296, 2015.
doi:10.1109/TAP.2015.2459131 Google Scholar

11. Brar, R. S. and K. S. Sharma, "A triple-band dipole antenna for UMTS/LTE and UWB applications," International Journal of Electronics Letters, Vol. 5, 1-12, 2017. Google Scholar

Dr. Kaiwen Yang

Dr. Fu-Shun Zhang

Dr. Chao Li