volume | PIER Journals

Abstract

A compact omnidirectional vertical-polarized broadband slot antenna for indoor distributed antenna systems is presented. The proposed antenna consists of a deformed printed monopole on one side of the substrate and a polygon slot in the circular ground plane on the other side. Due to the utilization of the wideband slot structure, the antenna achieves small electrical dimension of 0.327λ×0.327λ×0.0046λ at the lowest operating frequency, and an impedance bandwidth of about 129% (0.66-3.07 GHz) for VSWR≤1.5 is achieved, covering all frequency bands for 2G, 3G, 4G and some Wi-Fi communications. The proposed antenna has stable radiation patterns over the operating bands. The measured gains of the antenna range from 1.5 dBi (lower band) to 5.5 dBi (higher band). Compact planar structure makes the proposed antenna a perfect candidate for ceiling or surface mounted indoor distributed antenna applications.

1. Wu, Q., X.-J. Ding, and A.-X. Chen, "A broadband dipole antenna for multiservice indoor distributed antenna system (MS-IDAS)," IEEE Antennas and Wireless Propagation Letters, Vol. 14, 839-842, 2015.
doi:10.1109/LAWP.2014.2381876 Google Scholar

2. Ammann, M. J. and Z. N. Chen, "Wideband monopole antennas for multi-band wireless systems," IEEE Antennas and Propagation Magazine, Vol. 45, No. 2, 146-150, 2003.
doi:10.1109/MAP.2003.1203133 Google Scholar

3. Aten, D. W. and R. L. Haupt, "A wideband, low profile, shorted top hat monocone antenna," IEEE Transactions on Antennas and Propagation, Vol. 60, No. 10, 4485-4491, Oct. 2012.
doi:10.1109/TAP.2012.2207313 Google Scholar

4. Zuo, S. L., Y. Z. Yin, Z. Y. Zhang, and K. Song, "Enhanced bandwidth of low-profile sleeve monopole antenna for indoor base station application," Electronics Letters, Vol. 46, No. 24, 1587-1588, 2010.
doi:10.1049/el.2010.2708 Google Scholar

5. Zhang, Z.-Y., G. Fu, W.-J. Wu, J. Lei, and S.-X. Gong, "A wideband dual-sleeve monopole antenna for indoor base station application," IEEE Antennas and Wireless Propagation Letters, Vol. 10, 45-48, 2011.
doi:10.1109/LAWP.2011.2108255 Google Scholar

6. Behdad, N., M. Li, and Y. Yusuf, "A very low-profile, omnidirectional, ultrawideband antenna," IEEE Antennas and Wireless Propagation Letters, Vol. 12, 280-283, 2013.
doi:10.1109/LAWP.2013.2248693 Google Scholar

7. Zhou, L., Y.-C. Jiao, Y. Qi, Z.-B. Weng, and T. Ni, "Wideband ceiling-mount omnidirectional antenna for indoor distributed antenna systems," IEEE Antennas and Wireless Propagation Letters, Vol. 13, 836-839, 2014.
doi:10.1109/LAWP.2014.2319087 Google Scholar

8. Liu, Y. F., K. L. Lau, Q. Xue, and C. H. Chan, "Experimental studies of printed wide-slot antenna for wide-band applications," IEEE Antennas and Wireless Propagation Letters, Vol. 3, 273-275, 2004.
doi:10.1109/LAWP.2004.837510 Google Scholar

9. Dastranj, A., A. Imani, and M. Naser-Moghaddasi, "Printed wide-slot antenna for wideband applications," IEEE Transactions on Antennas and Propagation, Vol. 56, No. 10, 3097-3102, Oct. 2008.
doi:10.1109/TAP.2008.929459 Google Scholar

10. Liang, X.-L., T. A. Denidni, L.-N. Zhang, R.-H. Jin, J.-P. Geng, and Q. Yu, "Printed binomial-curved slot antennas for various wideband applications," IEEE Transactions on Microwave Theory and Techniques, Vol. 59, No. 4, 1058-1065, Apr. 2011.
doi:10.1109/TMTT.2011.2113990 Google Scholar

11. Pan, G.-P., Y. Li, Z.-J. Zhang, and Z.-H. Feng, "A compact wideband slot-loop hybrid antenna with a monopole feed," IEEE Transactions on Antennas and Propagation, Vol. 62, No. 7, 3864-3868, Jul. 2014.
doi:10.1109/TAP.2014.2320535 Google Scholar

12. Fan, S. T., Y. Z. Yin, B. Lee, W. Hu, and X. Yang, "Bandwidth enhancement of a printed slot antenna with a pair of parasitic patches," IEEE Antennas and Wireless Propagation Letters, Vol. 11, 1230-1233, 2012.
doi:10.1109/LAWP.2012.2224311 Google Scholar

13. Tang, M.-C., R. W. Richard, W. Ziolkowski, and S.-Q. Xiao, "Compact hyper-band printed slot antenna with stable radiation properties," IEEE Transactions on Antennas and Propagation, Vol. 62, No. 6, 2962-2969, 2014.
doi:10.1109/TAP.2014.2314299 Google Scholar

14. Agrawall, N. P., G. Kumar, and K. P. Ray, "Wide-band planar monopole antennas," IEEE Transactions on Antennas and Propagation, Vol. 46, No. 2, 294-295, Feb. 1998.
doi:10.1109/8.660976 Google Scholar

Dr. Bo Wang

Dr. Yong-Chang Jiao

Professor Zibin Weng

Dr. Tao Ni