Summary
International Symposium on Antennas and Propagation
2011
Session Number:ThE3
Session:
Number:ThE3-6
Experimental Study on Improving MIMO Channel by Dual-antenna System (DAS)
Lin Wang, Shi-Wei Qu, Qiang Chen, Qiaowei Yuan, Kunio Sawaya,
pp.-
Publication Date:2011/10/25
Online ISSN:2188-5079
Summary:
Recently, Li et al. designed a broadband reflectarray antenna as a passive repeater to overcome a problem of blind areas [1]. However, the aperture efficiency of the reflectarray degraded greatly when a very large scattering angle was desired because of a physical limitation of the reflectarray. In [2], although a dual-antenna system (DAS), composed of patch array and open-ended waveguide, was proposed to realize a large scattering angle, there were still some disadvantages in the design such as bulky size, high cost, small equivalent bi-static radar cross section (BRCS), etc. A quasiplanar DAS was proposed for solving these problems in [3], but only numerical analyses were performed. It is important to demonstrate the effectiveness of the proposed DAS in wireless communication applications. In this research, a quasi-planar DAS, which consists of a 4-element folded-patch antenna (FPA) array, a planar Yagi-Uda antenna, and a power combiner, was fabricated. Experiments were carried out in a multipath environment to demonstrate the improvement of multiple-input-multiple-output (MIMO) channel by using the DAS.