点聚焦透镜天线及分辨率的分析与测量  

Spot Focused Antenna and Its Spatial Resolution Study and MeasurementHe Changwei Liu Shuzhang

作　　者：何昌委[1] 刘述章[1] 

机构地区：[1]电子科技大学物理电子学院,成都610054

出　　处：《电子测量与仪器学报》2004年第2期72-76,共5页Journal of Electronic Measurement and Instrumentation

摘　　要：本文分析了点聚焦透镜天线的一些基本特性 ,采用波动理论方法分析了电磁波经透镜会聚的焦斑的大小和横向空间分辨率 ,指出点聚焦透镜天线在会聚点的天线特性与相同场分布的平面口径天线在无穷远处的天线特性的关系 ,提出了透镜天线的分辨率的一种测量方法和使用条件。通过实测 。A spot focused antenna is described, and its spatial resolution is discussed using diffraction theory. The fields in the focal areas of focused antenna and the far-field of a flat are very good similar radiation parameters. Interesting results are obtained for the focused location and its spot size, which may be used in near field focusing of microwave power, or, diagnosis. A method of measured focal region of focus antenna is presented with particular conditions. Focus size of a spot focused antennas were measured. The experimental results agree very favorably with the theoretical predictions.

关 键 词：点聚焦透镜天线 横向空间分辨率 散焦技术 焦斑 波动理论 

分 类 号：TN82[电子电信—信息与通信工程]