Title :
A pattern reconfigurable dielectric resonator antenna array for adaptive MIMO systems
Author :
Shoaib, Imran ; Chen, Xiaodong ; Ying, Zhinong
Author_Institution :
Sch. of Electron. Eng. & Comput. Sci., Queen Mary, Univ. of London, London, UK
Abstract :
This paper presents our latest study on the design of reconfigurable antennas and the performance achievable by employing such antennas in multiple-input multiple-output (MIMO) systems. The proposed antenna system consists of two identical dielectric resonator antennas (DRA) placed on a horizontal ground plane and separated by a distance of 0.2λ at design frequency of 2.45 GHz. Each element has three different radiation modes: TEx mode, TEy mode and a monopole mode. By switching between these modes, the induced current distribution on DRA can be changed, resulting in different radiation patterns, which can achieve pattern reconfiguration to increase channel capacity in varying channel conditions. The performance with such reconfigurable antennas in a 2×2 MIMO system is evaluated using ray-tracing simulations in an indoor environment.
Keywords :
MIMO communication; adaptive antenna arrays; antenna radiation patterns; channel capacity; ray tracing; adaptive MIMO system; channel capacity; horizontal ground plane; indoor environment; multiple-input multiple-output system; pattern reconfigurable dielectric resonator antenna array; radiation pattern reconfiguration; ray tracing simulation; varying channel conditions; Antenna arrays; Antenna radiation patterns; Arrays; Channel capacity; Dielectric resonator antennas; MIMO;
Conference_Titel :
Antennas and Propagation Conference (LAPC), 2011 Loughborough
Conference_Location :
Loughborough
Print_ISBN :
978-1-4577-1014-8
Electronic_ISBN :
978-1-4577-1015-5
DOI :
10.1109/LAPC.2011.6114092
