Asymmetric Coplanar Waveguide (ACPW) Zeroth-Order Resonant (ZOR) Antenna with High Efficiency and Bandwidth Enhancement

• Main Authors: Chen, Po-Wei, 陳柏偉
• Other Authors: Chen, Fu-Chiarng
• Format: Others
• Language: zh-TW
• Published: 2011
• Online Access: http://ndltd.ncl.edu.tw/handle/77798305499089596607

碩士 === 國立交通大學 === 電信工程研究所 === 100 === In this paper, we propose the new type of zeroth-ordered antenna (ZOR antenna) based on composite right/left-handed transmission line (CRLH-TL). The feature of ZOR based on periodic structure is employed to reduce the antenna size. Therefore, the researches of ZOR antenna have gathered great importance in recent years. However, these antennas are suffered from narrow bandwidth generally such that it is hard to apply to wireless communication systems. This new type of CRLH-TL is based on asymmetric coplanar-waveguide (ACPW). ACPW is proposed to realize a bandwidth-extended antenna. The ACPW structure not only provides the design freedom but also overcome the design constraint of the traditional CPW. The ACPW ZOR antenna is verified by both full-wave simulations and experiments. As an advantage of the proposed method, the size of antenna is reduced and has good radiation efficiency, extended fractional bandwidth and good peak gain with omni-direction.