1·This paper analyses a triple pole antenna using orthogonal coordinate transform.
文中通过直角坐标转换的方法，分析了一种三振子天线。
2·Because at present there is no millimeter wave single pole triple throw switch (SP3T) product in our country, so the research has its practically significance.
由于国内目前还没有毫米波单刀三掷开关的产品，本课题的研究有一定的实际意义。