基于高阻结构的埋藏引向天线研究与设计

Study and Design of Buried Yagi Antenna Based on the Structure of High Resistance

引向天线以其结构简单,方向性较好,调节方便,而广泛应用于雷达,电视,通信及其它无线电技术设备中。贴片天线由于结构小巧,剖面低,便于与电路实现一体化设计,成为了现在小型化天线的主要设计选取形式。本论文利用CST仿真软件对引向天线进行了贴片形式的设计和仿真,并基于高阻结构对设计给予改进和优化。设计优化后的基于高阻结构的贴片引向天线在5.2GHZ至6.25GHZ的频带内,反射系数低于-10d B,6GHz处中心辐射强度达到9.3 d B,显示了理想的引向天线的指标要求。

With its simple structure, better direction, convenient adjustment, Yagi antenna is widely used in radar, television, com-munications and other radio equipment. The patch antenna becomes the primary form of now miniaturized antenna because of its com-pact structure, low profile, easy to realize the integrated circuit design. This thesis is the design and simulation of patch Yagi antennaby using the CST simulation software. It gives improvement and optimization to the design by introducing high resistance structure.Based on the structure of high resistance, the patch Yagi antenna is designed and optimized, in the 5.2 GHZ to 6.25 GHZ frequencyband, the reflection coefficient is lower than - 10 dB. At 6 GHz, center radiation intensity is 9.3 dB. These parameters are ideal toantenna index requirements.