Design of MIMO Antennas for WLAN Applications

• Main Authors: Hung-Wen Ke, 柯閎文
• Other Authors: Wen-Shan Chen
• Format: Others
• Language: zh-TW
• Published: 2011
• Online Access: http://ndltd.ncl.edu.tw/handle/09852123784057381595

碩士 === 南台科技大學 === 通訊工程研究所 === 99 === The MIMO antennas designed for WLAN applications consist of two or more antennas in the same substrate. One important requirement for MIMO antenna is good isolation between antennas. Usually, it is difficult to integrate multiple antennas closely in a small and compact mobile handset while maintaining good isolation between them. To increase the isolation between antennas is very important for design MIMO antenna. Two designs of compact planar antenna for multiple inputs multiple outputs (MIMO) system are proposed for 5 GHz and 2.4 GHz WLAN application. In 5 GHz for WLAN system the antenna structure consists of a open slot antenna and two dipole antennas with dimension of 23×23 mm2 and added inverted-U shaped slit to increase the isolation among them below -15 dB. And the design of 2.4 GHz for WLAN hand-held device, the antenna structure consists of a open slot antenna and two monopole antennas with dimension of 60×18.5 mm2. Then, we added U-slit to increase the isolation among them below -15 dB.