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

Volume

63

Issue

2

fYear

2015

fDate

Feb. 2015

Firstpage

525

Lastpage

533

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;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/TAP.2014.2378316

Filename

6979215