微带贴片背射天线的设计与分析

The Design of the Backfire Antenna Fed by a Microstrip Patch

介绍一种采用微带贴片天线作为馈源的新式天线。从理论上阐述了微带贴片天线、背射天线的工作原理并且详细介绍了天线的具体设计过程。通过实验,测试了天线的性能参数。使用微波信号发生器、HP8593频谱分析仪以及天馈仪实测了天线的输入阻抗、方向图、方向性系数和输入驻波比。用比较法获得天线增益。结果表明该天线增益高、频带宽、方向性好、主瓣对称、抗干扰性能强。

A new kind of antenna is proposed, which used the microstrip patch antenna as the feeding source. In the article, principle and the concrete design of the microstrip patch and the backfire antenna are introduced elaborately.The performance parameters were tested in the experiment by microwave signal analyzer,HP8593 spectral analyzer and Anritsu S331C ,The analysis results show that the Backfire Antenna fed by a Microstrip Patch not only achieves ideal gain and bandwidth, but also has good characteristics such as good directivity pattern, symmetry main petal and high interference resistance. The new kind of antenna has very high applied value.