Designs of Chip Antennas

• Main Author: 方智逸
• Other Authors: C. F. Yang
• Format: Others
• Language: zh-TW
• Published: 2004
• Online Access: http://ndltd.ncl.edu.tw/handle/35461489358986911864

碩士 === 國立臺灣科技大學 === 電機工程系 === 92 === This thesis applies a finite difference time domain simulation software package, XFDTD from Remcom inc. The XFDTD is employed to develop the analysis model of the concealed antennas and to perform simulations, which can be used to design antennas for wireless communication devices or to receive multi-band broadcasting signals. The tiny chip antenna is designed by enclosing the radiating structure of the antenna with high dielectric constant composite materials. The radiating structure has single input and is formed by combining multiple meandered strips. Thus, more designing flexibility can be employed. Some single band and dualband tiny chip antennas for applications in the 2.4GHz and 5.2GHz ISM band have been designed, and the return loss S11 has been measured for a design of the tiny chip antenna. Good agreements between measurements and XFDTD simulations are obtained, which verify the program simulations. Furthermore, the designed single band and dualband tiny chip antennas has been applied to a PCMCIA card and the influence, which is package of a PCMCIA card and environment, of chip antennas has been analyzed. Lastly a dualband tiny chip antenna applied to a PCMCIA card has been designd. This study is quite valuable for practical applications. Patent applications in Taiwan and other countries have therefore been submitted for many new solutions presented here.