volume | PIER Journals

Abstract

In this paper, a very compact 6.1GHz band notched printed multiple-input multiple output (MIMO) antenna with the size of only 25×25 mm² is presented for Ultra-wideband (UWB) applications. Two symmetrical antenna elements are placed in vertical direction which make it easy to realize good diversity performance. The antenna elements are made up of a microstrip feed line and rounded patch. One slit is in the diagonal position, and one slot line is designed to improve the isolation between two orthogonal antenna elements. The 6.1 GHz band notch weakens the probable interference between C band satellite uplink communications and UWB system. Simulated and measured results show that it covers from 3.1 to 12 GHz with S₁₁<-10 dB except rejected band, and the isolation is better than 15 dB in full UWB spectrum.

1. Liu, Z., X. Wu, Y. Zhang, P. Ye, Z. Ding, and C. Hu, "Very compact 5.5 GHz band-notched UWB-MIMO antennas with high isolation," Progress In Electromagnetics Research C, Vol. 76, 109-118, 2017.
doi:10.2528/PIERC17053002

2. Liu, X. L., Z. Wang, Y.-Z. Yin, and J. H. Wang, "Closely spaced dual band-notched UWB antenna for MIMO applications," Progress In Electromagnetics Research C, Vol. 46, 109-116, 2014.
doi:10.2528/PIERC13120402

3. Zamir, W. and K. Dinesh, "Dual-band-notched antenna for UWB MIMO applications," International Journal of Microwave and Wireless Technologies, Vol. 9, No. 2, 381-386, 2015.

4. Malekpour, N., et al. "Compact UWB MIMO antenna with band-notched characteristic," Microwave & Optical Technology Letters, Vol. 59, No. 5, 1037-1041, 2017.
doi:10.1002/mop.30462

5. Huang, H. F. and S. Xiao, "MIMO antenna with high frequency selectivity and controllable bandwidth for band-notched UWB applications," Microwave & Optical Technology Letters, Vol. 58, No. 8, 1886-1891, 2016.
doi:10.1002/mop.29929

6. Lin, G. S., et al. "Isolation improvement in UWB MIMO antenna system using carbon black film," IEEE Antennas & Wireless Propagation Letters, Vol. PP, No. 99, 1-1, 2017.

7. Banerjee, J., A. Karmakar, R. Ghatak, and D. R. Poddar, "Compact CPW-fed UWB MIMO antenna with a novel modified Minkowski fractal defected ground structure (DGS) for high isolation and triple band-notch characteristic," Journal of Electromagnetic Waves and Applications, Vol. 31, No. 15, 1550-1565, 2017.
doi:10.1080/09205071.2017.1354727

8. Su, S. W., C. T. Lee, and F. S. Chang, "Printed MIMO-antenna system using neutralization-line technique for wireless USB-dongle applications," IEEE Transactions on Antennas & Propagation, Vol. 60, No. 2, 456-463, 2012.
doi:10.1109/TAP.2011.2173450

9. Tang, T. C. and K. H. Lin, "An ultrawideband MIMO antenna with dual band-notched function," IEEE Antennas & Wireless Propagation Letters, Vol. 13, 1076-1079, 2014.
doi:10.1109/LAWP.2014.2329496

10. Gao, P., et al. "Compact printed UWB diversity slot antenna with 5.5-GHz band-notched characteristics," IEEE Antennas & Wireless Propagation Letters, Vol. 13, No. 4, 376-379, 2014.

11. Ibrahim, A. A., J. Machac, and R. M. Shubair, "Compact UWB MIMO antenna with pattern diversity and band rejection characteristics," Microwave & Optical Technology Letters, Vol. 59, 2017.

12. Tao, J. and Q. Y. Feng, "Compact isolation-enhanced UWB MIMO antenna with band-notch character," Journal of Electromagnetic Waves and Applications, Vol. 30, No. 16, 2206-2214, 2016.
doi:10.1080/09205071.2016.1217173

13. Garima, S., B. K. Kanuijia, and P. Rajeev, "UWB MIMO antenna with common radiator," International Journal of Microwave & Wireless Technologies, Vol. 9, No. 3, 573-580, 2016.

14. Zhu, J., et al. "Compact CPW UWB diversity slot antenna with dual band-notched characteristics," Microwave & Optical Technology Letters, Vol. 58, No. 4, 989-994, 2016.
doi:10.1002/mop.29714

15. Nirmal, P. C., A. B. Nandgaonkar, S. Nalbalwar, and R. K. Gupta, "A compact MIMO antenna with improved isolation for 3G, 4G, WI-FI, Bluetooth and UWB applications," Progress In Electromagnetics Research C, Vol. 76, 87-98, 2017.
doi:10.2528/PIERC17051204

16. Liu, G., Y. Liu, and S. Gong, "Compact uniplanar UWB MIMO antenna with band-notched characteristic," Microwave & Optical Technology Letters, Vol. 59, No. 9, 2207-2212, 2017.
doi:10.1002/mop.30700

17. Khan, M. S., M. F. Shafique, A. D. Capobianco, E. Autizi, I. Shoaib, and I. Ali, "Compact UWB-MIMO Antenna Array with a floating Digitated Decoupling Structure," IET Microwaves, Antennas & Propagation, Vol. 8, No. 10, 747-753, March 2014.
doi:10.1049/iet-map.2013.0672

18. Dietrich, Jr., C. B., K. Dietze, J. R. Nealy, and W. L. Stutzman, "Spatial, polarization, and pattern diversity for wireless handheld terminals," IEEE Transactions on Antennas & Propagation, Vol. 49, 1271-1281, 2001.
doi:10.1109/8.947018

19. Chandu, D. S. and S. S. Karthikeyan, "A novel broadband dual circularly polarized microstrip-fed monopole antenna," IEEE Transactions on Antennas & Propagation, Vol. 65, 1410-1415, 2017.

Dr. Changye Liang

Dr. Rong Su

Prof. Peng Gao

Dr. Peng Wang