Title :
A switched-beam three-element printed loop antenna array for MIMO systems
Author :
Ahmed, Ishtiaq ; Shoaib, Imran ; Shoaib, Sultan ; Shoaib, Nosherwan
Author_Institution :
Dept. of Electr. Eng., COMSATS Inst. of Inf. Technol., Islamabad, Pakistan
Abstract :
In this paper, a novel switched-beam antenna is proposed to deliver high performance gains in the Multiple-Input Multiple-Output (MIMO) systems. The antenna is composed of three identical loop elements separated at 120 degrees from each other. Such an antenna is a planar structure and can rotate the beam over the whole azimuthal angle. To prove the concept, an antenna is developed and optimized to cover 3.08-3.72 GHz and 5-5.4 GHz frequency bands appropriate for the mobile WiMAX (3.5 GHz) and Wi-Fi (IEEE802.11 5.25 GHz) standards. The envelope correlation coefficient and radiation characteristics of the proposed antenna are also discussed. Its compact size and simple structure combined with low manufacture cost makes it promising solution for indoor base stations to overcome multipath problems and enhance system performance.
Keywords :
MIMO communication; WiMax; antenna radiation patterns; correlation methods; indoor radio; loop antennas; microstrip antenna arrays; microwave antenna arrays; mobile radio; switched networks; wireless LAN; MIMO systems; Wi-Fi standard; azimuthal angle; bandwidth 3.08 GHz to 3.72 GHz; bandwidth 5 GHz to 5.4 GHz; envelope correlation coefficient; frequency 3.5 GHz; frequency 5.25 GHz; frequency bands; high performance gains; identical loop elements; indoor base stations; mobile WiMAX standard; multiple-input multiple-output systems; planar structure; radiation characteristics; switched-beam three-element printed loop antenna array; system performance enhancement; Antenna arrays; Antenna radiation patterns; Arrays; MIMO; Switches; Loop antenna; multiple-input multiple-output (MIMO); smart antennas; switched-beam technology;
Conference_Titel :
Antennas and Propagation (EuCAP), 2013 7th European Conference on
Conference_Location :
Gothenburg
Print_ISBN :
978-1-4673-2187-7
Electronic_ISBN :
978-88-907018-1-8
