Design of Miniaturized Antenna for RF Module and Laptop Computer Applications

• Main Authors: Fu-syuan Chen, 陳甫玹
• Other Authors: Chang-Fa Yang
• Format: Others
• Language: zh-TW
• Published: 2011
• Online Access: http://ndltd.ncl.edu.tw/handle/nc5pzb

碩士 === 國立臺灣科技大學 === 電機工程系 === 99 === This thesis proposes four kinds of miniature antennas for 2.4 GHz, WLAN (Wireless Local Area Network) and WWAN (Wireless Wide Area Network) applications, respectively. All of four antennas have a compact size and good radiation performance so that can built in RF module or laptop computer and suitable for commercial applications. The first design is about an inverted-L chip antenna using match network to improve the antenna performance which operating frequency is 2.4 GHz. The second antenna design is miniature planar inverted-F chip antenna for 2.4 GHz operation. It is based on a planar inverted-F structure and using shorted pin to adjust the input impedance, so that can optimization the antenna performance. Both antennas does not require any empty space so that can reduce waste and improve layout space of another circuit in the RF module. Using this antenna design can achieve minimize development of RF module. The third design is inverted-F antenna for WLAN application. This antenna using planar inverted-F structure and multiple resonance paths to excited more than one resonance frequency, therefore the antenna has a wide bandwidth for WLAN application. The final design is inverted-F antenna for WWAN application. It is similar to third design but the radiator is layout on different plane in the same PCB. Consequently the proposed designs fabricated on FR4 substrate to lower cost so that can integration into RF module or laptop computer and suitable for commercial applications.