Skip to main content Accessibility help

Low-profile, extremely wideband, dual-band-notched MIMO antenna for UWB applications

  • Ankan Bhattacharya (a1) (a2), Bappadittya Roy (a3), Rafael F. S. Caldeirinha (a4) and Anup K. Bhattacharjee (a1)


In this article, an extremely wideband, isolation-enhanced, low-profile “Multiple-Input-Multiple-Output” (MIMO) antenna along with dual-band-notched features has been investigated. The antenna proposed herein, possesses two mutually orthogonal staircase-etched radiators for achieving a wide bandwidth. The radiating elements are placed mutually perpendicular in order to achieve polarization diversity and high isolation, i.e. for minimization of mutual coupling effect between adjacent radiating elements. The antenna exhibits an extremely wide frequency bandwidth covering 1.2–19.4 GHz except two frequency band notches centered at 3.5 and 5.5 GHz, respectively, originated due to the incorporation of a “Rectangular Complementary Split Ring Resonator (RCSRR)” structure and by etching dual “L-shaped” slits in the ground plane. The center frequency of the notched bands is adjusted by fine tuning of the dimensions of the incorporated band-notching structures. Isolation level (S21) better than −20 dB has been obtained due to the insertion of a “T-shaped” parasitic element as a decoupling structure. A prototype of the proposed antenna having dimension of 20 mm × 20 mm (0.08 λo × 0.08 λo) is fabricated and the antenna responses have been measured. Obtained results show that the miniaturized MIMO diversity antenna is undoubtedly a capable contender for communications supporting an extremely wide impedance bandwidth along with band-notched features for WLAN and WiMAX.


Corresponding author

Author for correspondence: Ankan Bhattacharya, E-mail:


Hide All
1.Mak, A, Rowell, C and Murch, R (2008) Isolation enhancement between two closely packed antennas. IEEE Transactions on Antennas and Propagation 56, 34113419.
2.Li, Z, Du, Z, Takahashi, M, Saito, K and Ito, K (2012) Reducing mutual coupling of MIMO antennas with parasitic elements for mobile terminals. IEEE Transactions on Antennas and Propagation 60, 473481.
3.Khan, M, Capobianco, A, Najam, A, Shoaib, I, Autizi, E and Shafique, M (2014) Compact ultra-wideband diversity antenna with a floating parasitic digitated decoupling structure. IET Microwaves, Antennas & Propagation 8, 747753.
4.Zhang, S, Ying, Z, Xiong, J and He, S (2009) Ultrawideband MIMO/diversity antennas with a tree-like structure to enhance wideband isolation. IEEE Antennas and Wireless Propagation Letters 8, 12791282.
5.Ren, J, Hu, W, Yin, Y and Fan, R (2014) Compact printed MIMO antenna for UWB applications. IEEE Antennas and Wireless Propagation Letters 13, 15171520.
6.Chacko, B, Augustin, G and Denidni, T (2013) Uniplanar polarisation diversity antenna for ultra wideband systems. Microwaves, Antennas & Propagation 7, 854857.
7.Gao, P, He, S, Wei, X, Xu, Z, Wang, N and Zheng, Y (2014) Compact printed UWB diversity slot antenna with 5.5 GHz band-notched characteristics. IEEE Antennas and Wireless Propagation Letters 13, 376379.
8.Lee, J, Kim, K, Ryu, H and Woo, J (2012) A compact ultra wideband MIMO antenna with WLAN band-rejected operation for mobile devices. IEEE Antennas and Wireless Propagation Letters 11, 990993.
9.Toktas, A (2017) G-shaped band-notched ultra-wideband MIMO antenna system for mobile terminals. IET Microwaves, Antennas & Propagation 11, 718725.
10.Li, J, Chu, Q, Li, Z and Xia, X (2013) Compact dual band-notched UWB MIMO antenna with high isolation. IEEE Transactions on Antennas and Propagation 61, 47594766.
11.Liu, L, Cheung, S and Yuk, T (2015) Compact MIMO antenna for portable UWB applications with band-notched characteristic. IEEE Transactions on Antennas and Propagation 63, 19171924.
12.Cho, YJ, Kim, KH, Choi, DH, Lee, SS and Park, SO (2006) A miniature UWB planar monopole antenna with 5.0 GHz band-rejection filter and the time-domain characteristics. IEEE Transactions on Antennas and Propagation 54, 14531460.
13.Jan, J and Kao, J (2007) Novel printed wideband rhombus like slot antenna with an offset microstrip fed line. IEEE Antennas and Wireless Propagation Letters 06, 249251.
14.Toktas, A and Akdagli, A (2014) Wideband MIMO antenna with enhanced isolation for LTE, WiMAX and WLAN mobile handsets. Electronics Letters 50, 723724.
15.Rehman, SU, Sheta, AFA and Alkanhal, MAS (2011) Compact bandpass filters with bandwidth control using Defected Ground Structure (DGS). Applied Computational Electromagnetics Society (ACES) Journal 26, 624630.
16.Najam, A, Duroc, Y and Tedjini, S (2012) Multiple-input multiple-output antennas for ultra wideband communications. IntechOpen 10, 209236.



Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed