An FSS-Based Nonplanar Quad-Element UWB-MIMO Antenna System

作者：Bilal Muhammad; Saleem Rashid; Abbasi Hammad H; Shafique Muhammad Farhan; Brown Anthony K

来源：IEEE Antennas and Wireless Propagation Letters, 2017, 16: 987-990.

DOI：10.1109/LAWP.2016.2615884

• Frequency selective surfaces (FSSs)
• microstrip antennas
• multiple-input-multiple-output (MIMO)
• mutual coupling
• ultrawideband (UWB) antennas

In this letter, a low-profile, miniaturized four-element ultrawideband (UWB) antenna for four-port multiple-inputmultiple-output (MIMO) configuration is proposed. The MIMO antenna elements are organized in a cuboidal geometry around a polystyrene block. An inverted L-shaped structure provides decoupling among the antenna elements. This structure is frequency selective-surface-based and has slotted Y-shapes etched in it. In addition to that, a square spiral parasitic structure improves input impedance matching over the desired frequency band. Antenna elements are realized on low-profile FR-4 substrate having compact dimensions of 32x36x1.5mm(3). The proposed three-dimensional (3-D) UWB-MIMO system achieves good impedancematching and an effective isolation of 20 dB among antenna elements in most of the band. The reported configuration is suitable for nonplanar/3-D system-in-package applications where a planar arrangement of four elements is not possible due to size limitations.

• 出版日期2017