Title :
AMC-Loaded Wideband Base Station Antenna for Indoor Access Point in MIMO System
Author :
Guihong Li ; Huiqing Zhai ; Long Li ; Changhong Liang ; Rongdao Yu ; Sheng Liu
Author_Institution :
Nat. Key Lab. of Antennas & Microwave Technol., Xidian Univ., Xi´an, China
Abstract :
Wideband indoor base station antenna (operating at 5.2 /5.8 GHz WLAN and 5.5 GHz WiMAX), loaded with artificial magnetic conductor (AMC), is proposed for multiple-input multiple-output (MIMO) system. The MIMO system has sixteen elements, and each element has a pair of folded dipoles, fed by a coupling E-shape microstrip feedline. Periodical AMC surfaces are introduced underneath the dipole elements to achieve unidirectional radiation and low profile. They also contribute to antenna miniaturization and bandwidth enhancement. The MIMO system has the advantages of wide bandwidth, good isolation, enhanced radiation, and low correlation, all within a compact volume. The MIMO array was fabricated and tested, and the results are in good agreement with those of the simulations.
Keywords :
MIMO communication; antenna feeds; antenna radiation patterns; broadband antennas; dipole antenna arrays; microstrip lines; microwave antenna arrays; MIMO array; MIMO system; WLAN; WiMAX; antenna miniaturization; artificial magnetic conductor; bandwidth enhancement; coupling E-shape microstrip feedline; dipole elements; folded dipoles; frequency 5.2 GHz; frequency 5.5 GHz; frequency 5.8 GHz; multiple-input multiple-output system; periodical AMC surfaces; unidirectional radiation; wideband indoor base station antenna; Antenna arrays; Arrays; Broadband antennas; Dipole antennas; Gain; MIMO; Surface impedance; Artificial magnetic conductor (AMC); compact volume; good isolation; indoor base station; multiple-input multiple-output (MIMO) system; sixteen elements;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
DOI :
10.1109/TAP.2014.2378316
