Design of high port isolation access point MIMO system using centrally located hexahedron

• Published in: Electronics letters 2014-02, Vol.50 (4), p.248-249
• Main Authors: Wang, Shun-Min, Hwang, Lih-Tyng, Chang, Fa-Shian, Liu, Chih-Fang
• Format: Article
• Language: English
• Subjects: antenna radiation patterns; Antennas; Antennas and propagation; Applied sciences; Bands; centrally located hexahedron; Circuit properties; diversity polarisation; Electric, optical and optoelectronic circuits; Electronics; Exact sciences and technology; frequency 2.44 GHz; frequency 5.25 GHz; Ground plane; Grounds; hexagon ground plane; Hexagons; high port isolation access point MIMO system; microwave antenna arrays; Microwave circuits, microwave integrated circuits, microwave transmission lines, submillimeter wave circuits; MIMO communication; multifrequency antennas; novel dual‐band multiple‐input multiple‐output antenna system; Ports; Radiocommunications; Sidelobes; Simulation; Telecommunications; Telecommunications and information theory; UHF antennas
• ISSN: 0013-5194; 1350-911X; 1350-911X
• DOI: 10.1049/el.2013.3440

A novel dual-band multiple-input multiple-output (MIMO) antenna system with diversity polarisation and high port isolation is proposed. The antenna system consists of six antennas (three antennas operate at 2.44 GHz and the others at 5.25 GHz) mounted on a hexagon ground plane and backed by a centrally located hexahedron. The antennas for different bands are arranged in an alternative fashion along the peripheral of the hexagonal ground. From simulation and experimental results, the proposed MIMO system has been shown to perform superbly at both the 2.44 and 5.25 GHz bands, with significant and consistent improvements in sidelobe levels and envelope correlation coefficients at the lower band due to the presence of the hexahedron.