Analysis of a Dual Bands WLAN Fractal Antenna

• Main Authors: 林柏汎 Lin, Po-Fan, 林柏汎
• Other Authors: 程光蛟 Tiong, Kwong-Kau
• Format: Others
• Language: zh-TW
• Published: 2016
• Online Access: http://ndltd.ncl.edu.tw/handle/92624307746364541379

碩士 === 國立臺灣海洋大學 === 電機工程學系 === 104 === In this thesis, a dual bands antenna operating at 2.45 GHz and 5.8 GHZ for WLAN applications was studied and presented. It is fabricated on an FR4 substrate. The dielectric constant of the substrate is εr=4.4 and thickness of the substrate is h=1.6mm.The fractal antenna fed by microstrip line covers the frequency band of the WLAN(IEEE 802.11a/b/g).The antenna uses the way of hollowing out and filling graphes to produce different levels. As the number of the iteration level increases, the return loss and the gain of the antenna showed improvement. In addition, square slots at the metallic bottom of the antenna were introduced. It can improve the return loss to have better impedance matching at both frequency bands. It also has the effect of widening the bandwidth. Keywords: WLAN, microstrip line, fractal antenna