辐射模缝隙馈源激励的2GHz无线电波在室内的传播

本文给出了用辐射模缝隙馈源作为发射天线时，2GHz窄带和宽带无线电波在室内传播特性的测量结果。对于窄带信号，主要测量了传播过程中的衰减，测量结果表明，沿缝隙馈源方向，接收信号电平按指数规律衰减，在垂直于电缆方向上，接收信号电平的衰减较慢，损耗指数较小：在平行和垂直于馈源方向上慢衰落基本服从正态分布，而快衰落分别服从Rayleigh和Rician分布。对于宽带信号，测量了多径脉冲相应，得到了均方根时延扩展及其概率分布。

Indoor coupled mode leaky feeder propagation at 2.0GHz

This paper presents the results of narrowband and wideband propagation measurements carried out at 2.0GHz in a large enclosed area using a coupled mode leaky feeder as the transmitting antenna . The narrowband measurements were devised to measure attenuation of radio signals and the wideband techniques to measure multipath impulse responses and their associated root mean square delay spread. Analysis of the narrowband data files shows that the received signal levels in the direction along the feeder generally decay exponentially due to the feeder specific attenuation . the received signal levels in the direction radial to the feeder decrease quickly . The slow variations basically follow the lognormal distribution , while the fast variations fit the Rayleigh distribution in the direction parallel to the feeder and the Ricial distribution in the direction radial to the feeder.