28 GHz下对毫米波透射特性的分析

毫米波段拥有高速传输数据的优点，是目前第5代(the 5th Generation，5G)移动通信系统的重要候选频段之一.为了研究毫米波的透射特性，将一对喇叭天线相向放置在玻璃门的两侧，在28 GHz频率下使用800 MHz带宽设备进行了一系列透射特性的测量.研究了不同入射角，极化方式及不同发射端与接收端(Transmitter-Receiver，Tx-Rx)距离对透射系数的影响.将测量结果与菲涅耳传播定律(包括光滑表面和提出的高斯粗糙表面模型)进行了对比.结果表明，文中提出的高斯粗糙表面模型与垂直和水平极化信号的透射特性更拟合.此外，实验也研究了收发端距离对透射的影响，并得出了不同入射角度下的穿透损耗值.

Penetration characteristics for millimeter wave band at 28 GHz

Millimeter-wave (mm Wave) band can offer ultra-high-speed wireless data transmission,which is considered as an important candidate band for the 5G mobile communication system.To gain further insights into mm Wave penetration characteristics,we present a series of penetration measurements at 28 GHz with 800 MHz bandwidth,a pair of 25 dBi horn antennas were placed on the two sides of the glass door.The penetration coefficients are measured for different incident angles and transmitter-receiver (TxRx) spatial positions.This paper presents results stemming from a comparison between the measurement data and the Fresnel transmission formula coefficients which include ideal smooth surface model and proposed Gaussian rough surface model.The results illustrate that the Gaussian rough surface model proposed in this letter describes penetration performance of horizontal and vertical polarization signals more adequately.In addition,the effects of distances on the penetration coefficients are investigated,we also provide the penetration loss of different incident angles.