Key component of wind profilier - printed Yagi antenna design

• Main Authors: Geng-Yi Huang, 黃耿毅
• Other Authors: Tsen-Chieh Chiu
• Format: Others
• Language: zh-TW
• Published: 2004
• Online Access: http://ndltd.ncl.edu.tw/handle/29937096752872209210

碩士 === 國立中央大學 === 通訊工程研究所 === 92 === The goal of the thesis is to study the effects of many arguments, including the dimensions and the feeding structure of the printed Yagi antenna, on the center frequency, mid-band gain, and front-to-rear(F/R) ratio. Then, the guidelines of the antenna design will be proposed based on the simulation results. Basically, using the traditional configuration of the printed Yagi antenna, the mid-band gain or the F/R ratio cannot be improved without scarifying the other. Therefore, at the end of the thesis, a novel reflector formed by multiple dipoles is proposed. Through simulations and measurements, it is found the proposed configuration highly improves the F/R ratio while the mid-band gain remains almost unchanged.