Design of 4 × 4 MIMO Antennas for Small Cell

• Main Authors: YU, CHIN, 余瑾
• Other Authors: CHEN, HUA-MING
• Format: Others
• Language: zh-TW
• Published: 2018
• Online Access: http://ndltd.ncl.edu.tw/handle/zd65a6

碩士 === 國立高雄應用科技大學 === 光電與通訊工程研究所 === 106 === In this thesis, the design of 4 × 4 MIMO (Multi-input Multi-output) antennas applicable to small cell of wireless local area network has been proposed. The first design to adopt a modified dipole antenna, the transmission lines after feeding which is bent 90 degree make end of antennas cross, and there is great directivity in radiation patterns. The second design continues to use dipole excitation, in order to achieve impedance matching for the antenna, we add the structure of the cross loop. The antennas placement compact, so we additional decoupling measures, the radiation pattern produces directivity and pattern diversity technique The last antenna is uses microstrip lines to couple open slots created a dual band, that makes the directivity in radiation patterns. All antennas assemblies are placed at corners board to meet the multi-input multi-output operation needs, which is an isolation mechanism at -15 dB, gain of 5 dBi and simple structure, low cost, and low profile.