[外文翻譯]用FDTD方法計(jì)算鋼筋混凝土墻對(duì)短徑傳播超寬帶脈沖信號(hào)的影響

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摘要：在時(shí)域用有限差分時(shí)域（FDTD）法研究超寬帶短徑傳播脈沖信號(hào)從寬帶圓錐單極天線通過鋼筋混凝土墻的建筑物所生成的數(shù)值。結(jié)果表明，鋼筋混凝土墻影響兩個(gè)發(fā)射天線的脈沖信號(hào)和散射濾波的波形。
一，引言
當(dāng)美國聯(lián)邦通信委員會(huì)（FCC）宣布在允許排放的限制下無牌使用頻譜從3.1到10.6 GHz，超寬帶（UWB）通信逐漸成為一項(xiàng)有趣的技術(shù)。
一個(gè)超寬帶通信信道特性強(qiáng)烈取決于它工作環(huán)境的電磁特性。在室內(nèi)環(huán)境下房間內(nèi)的短路徑傳輸?shù)腢WB信號(hào)，超寬帶脈沖的傳播主要依靠人造建筑物墻壁和其他障礙物。因此，脈沖信號(hào)波形，穿透混凝土墻建筑物或反射后到達(dá)接收天線，往往和發(fā)射天線輻射的信號(hào)沒有多少相似之處，因?yàn)槊}沖信號(hào)和建筑物的墻壁 ......


Abstract ¬ The short path propagation of an UWB pulse generated numerically from a wideband conical monopole antenna through reinforced concrete wall of buildings has been studied in the time-domain using the finite-difference time-domain (FDTD) method. Results demonstrated the effects of both filtering of transmitting antenna and scattering of the reinforced concrete wall on pulse signal waveform.
I. INTRODUCTION
Ultra-wideband (UWB) communication becomes an interesting technology when the Federal Communications Commission (FCC) announced the unlicensed usage of spectra from 3.1 to 10.6 GHz under certain emission restrictions. The characterization of an UWB communication channel strongly depends on the electromagnetic characteristics of the environment in which it operates. In the environments of the indoor short path propagation of UWB signals inside a room, the UWB pulse propagation is dominated by man-made building walls and other obstacles. As a result, the pulse signal waveform, when reaching receiving antenna after ......