受限空间内不同形状波束的电波覆盖特性研究

Research on the radio coverage properties of antennas with different beam shapes in confined space

介绍了受限空间内电波覆盖的研究背景及意义,阐述了研究现状。然后以矩形隧道为例,建立了受限空间电波覆盖仿真模型,并研究了四种形状不同但半功率波瓣宽度相同的天线辐射波束在隧道内产生的电波覆盖特性。通过对比,得出了波瓣宽度较窄的矩形波束更适用于隧道内电波覆盖的结论,为受限空间新型天线设计提供了参考。

The background and significance ol the research on radio coverage in confined space are introduced,and the research on status in this field is presented. Then,a radio wave coverage simulation model in confined space is built lor a rectangular tunnel. The coverage properties ol lour antennas with different beam shapes but with same hall-power beamwidth in tunnel are studied. By comparison, it is found that the antenna with narrower beamwidth is more suitable lor radio coverage in confined space, which provides a relerence lor the design ol the new antenna in conlined space.