Study and Fabrication of Ceramic Helical Antennas

• Main Authors: Ta-Chih Huang, 黃大智
• Other Authors: Ken-Huang Lin
• Format: Others
• Language: zh-TW
• Published: 2001
• Online Access: http://ndltd.ncl.edu.tw/handle/12570670271898375322

碩士 === 國立中山大學 === 電機工程學系研究所 === 89 === Antennas are designed to radiate or receive electromagnetic waves in the part of transmitting or receiving system. They are transducers which transform electric energy into waves so as to radiate radio waves, that’s the primary purpose of antennae. Utilizing the characteristics of helical antennae operating in the axial mode including high directivity, broad bandwidth and circular polarization in satellite communication (ex. GPS) is detailed described in this thesis. The microwave dielectric ceramic material becomes very popular in satellite and wireless communication in recent years because of its high-K, high-Q,and stable-temperature-coefficient characteristics.Our study also utilizes its feature of high dielectric coefficient to shrink the size of the antenna significantly. In this study, we fabricate and analyze the antenna combining the advantages of the helical antenna and the microwave dielectric ceramic material.