volume | PIER Journals

Abstract

A novel loop-like monopole antenna with dual-band circular polarization (CP) for the reception of WiMAX and WLAN is designed and implemented in this paper. The antenna consists of a radiating patch which is composed of an annular-ring linked by a square ring over the corner and a ground plane with embedded rectangular slit. The broad impedance bandwidth is achieved based on a novel monopole structure which is the combination of two perturbed loops and the perturbation causes the generation of right-hand circular polarization (RHCP) at 3.52 GHz and left-hand circular polarization (LHCP) at 5.75 GHz. In addition, by embedding a rectangular slit on the ground, the impedance bandwidth can be greatly enhanced. The measured results show that the proposed monopole antenna has an impedance bandwidth of 3.65 GHz from 2.65 to 6.3 GHz, reaching the particularly broad bandwidth of 81.6%. Furthermore, the measured 3-dB axial ratio (AR) bandwidths are about 440 MHz at the lower band (3.52 GHz) and 220 MHz at the upper band (5.75 GHz). The radiation characteristics of the implemented antenna are also presented.

1. Ren, W., J. Y. Deng, and K. S. Chen, "Compact PCB monopole antenna for UWB applications," Journal of Electromagnetic Waves and Applications, Vol. 21, No. 10, 1411-1420, 2007.
doi:10.1163/156939307783239401

2. Gopikrishna, M., D. D. Krishna, A. R. Chandran, and C. K. Aanandan, "Square monopole antenna for ultra wide band communication applications ," Journal of Electromagnetic Waves and Applications, Vol. 21, No. 11, 1525-1537, 2007.
doi:10.1163/156939307782000299

3. Zhang, H. T., Y. Z. Yin, and X. Yang, "A wideband monopole with G type structure," Progress In Electromagnetics Research, Vol. 76, 229-236, 2007.
doi:10.2528/PIER07071004

4. Heidari, A. A., M. Heyrani, and M. Nakhkash, "A dual-band circularly polarized stub loaded microstrip patch antenna for GPS applications ," Progress In Electromagnetics Research, Vol. 92, 195-208, 2009.
doi:10.2528/PIER09032401

5. Chen, J., G. Fu, G. D. Wu, and S. X. Gong, "A novel broadband circularly polarized irregular slot antenna," Journal of Electromagnetic Waves and Applications, Vol. 24, No. 2--3, 413-421, 2010.
doi:10.1163/156939310790735642

6. Pan, Y. M. and Wideband circularly polarized, "Wideband circularly polarized trapezoidal dielectric resonator antenna," trapezoidal dielectric resonator antenna Wireless Propagat. Lett., Vol. 9, 588-591, 2011.

7. Li, X., Y.-J. Yang, X. Tao, L. Yang, S.-X. Gong, Y. Gao, K. Ma, and X.-L. Liu , "A novel design of wideband circular polarization antenna array with high gain characteristic," Journal of Electromagnetic Waves and Applications, Vol. 24, No. 7, 951-958, 2010.
doi:10.1163/156939310791285245

8. Wang, C. J., "A wideband loop-like monopole antenna with circular polarization," Microwave Opt. Technol. Lett., Vol. 53, No. 11, 2556-2560, 2012.
doi:10.1002/mop.26353

9. Wang, C. J. and Y. C. Lin, "New CPW-fed monopole antennas with both linear and circular polarisations," IET Microwave, Antennas and Propagation, Vol. 2, No. 5, 466-472, 2008.
doi:10.1049/iet-map:20070145

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

11. Shynu, S. V., G. Augustin, C. K. Aanandan, P. Mohanan, and K. Vasudevan, "Design of compact reconfigurable dual frequency microstrip antennas using varactor diodes," Progress In Electromagnetics Research, Vol. 60, 197-205, 2006.
doi:10.2528/PIER05120101

12. Huang, C. R., J. H. Huang, and C. F. Jou, "Dual-band circularly polarized slotted monopole antenna," Microwave Conference Proceedings (APMC), 1866-1869, 2011.

13. Li, W. M., Y.-C. Jiao, L. Zhou, and T. Ni, "Compact dual-band circularly polarized monopole antenna," Journal of Electromagnetic Waves and Applications, Vol. 25, No. 14--15, 2130-2137, 2011.
doi:10.1163/156939311798072018

14. Liu, J. C., S. H. Chiu, K. D. Yeh, B. H. Zeng, H.-C.Wu, and T.-F. Hung, "CPW-fed sleeve monopole antenna with complementary SIR radiators for DTV signal reception and circularly polarized SIR radiators for DTV signal reception and circularly polarized ," Progress In Electromagnetics Research C, Vol. 14, 23-31, 2010.
doi:10.2528/PIERC10042703

15. , , High Frequency Structure Simulator (HFSS), Version 10.0, Ansoft Corporation, USA, 2005.

Dr. Kang Ding

Dr. Tongbin Yu

Dr. De-Xin Qu

Dr. Cheng Peng