This paper discusses the significance and prospects of low altitude small satellite aerial vehicles to ensure smooth aerial-ground communications for next-generation broadband networks.To achieve the generic goals of ...This paper discusses the significance and prospects of low altitude small satellite aerial vehicles to ensure smooth aerial-ground communications for next-generation broadband networks.To achieve the generic goals of fifthgeneration and beyondwireless networks,the existing aerial network architecture needs to be revisited.The detailed architecture of low altitude aerial networks and the challenges in resource management have been illustrated in this paper.Moreover,we have studied the coordination between promising communication technologies and low altitude aerial networks to provide robust network coverage.We talk about the techniques that can ensure userfriendly control and monitoring of the low altitude aerial networks to bring forth wireless broadband connectivity to a new dimension.In the end,we highlight the future research directions of aerial-ground communications in terms of access technologies,machine learning,compressed sensing,and quantum communications.展开更多
针对星载相控阵雷达应用背景,提出一款工作于Ku频段的低剖面轻量化一维相扫缝隙阵天线。天线基于射频-数字-供电一体化设计思路,并采用系统级封装(system in package,SiP)芯片实现高密度结构集成。与传统基于砖式或瓦片式收发(transmit/...针对星载相控阵雷达应用背景,提出一款工作于Ku频段的低剖面轻量化一维相扫缝隙阵天线。天线基于射频-数字-供电一体化设计思路,并采用系统级封装(system in package,SiP)芯片实现高密度结构集成。与传统基于砖式或瓦片式收发(transmit/receive,T/R)组件的相控阵天线相比,所提天线设计可以有效降低天线剖面高度和重量。天线中心工作频率为16 GHz,具有600 MHz工作带宽,可实现一维方向波束扫描。此外,天线设计了自校准网络,可用于在轨期间射频通道幅相特性实时检测。样机实测结果表明,天线扫描角度范围可达±30°,等效全向辐射功率(effective isotropic radiated power,EIRP)与接收增益与噪声温度比(gain-to-noise temperature ratio,G/T)值测试结果均与理论计算值吻合。展开更多
文摘This paper discusses the significance and prospects of low altitude small satellite aerial vehicles to ensure smooth aerial-ground communications for next-generation broadband networks.To achieve the generic goals of fifthgeneration and beyondwireless networks,the existing aerial network architecture needs to be revisited.The detailed architecture of low altitude aerial networks and the challenges in resource management have been illustrated in this paper.Moreover,we have studied the coordination between promising communication technologies and low altitude aerial networks to provide robust network coverage.We talk about the techniques that can ensure userfriendly control and monitoring of the low altitude aerial networks to bring forth wireless broadband connectivity to a new dimension.In the end,we highlight the future research directions of aerial-ground communications in terms of access technologies,machine learning,compressed sensing,and quantum communications.
文摘针对星载相控阵雷达应用背景,提出一款工作于Ku频段的低剖面轻量化一维相扫缝隙阵天线。天线基于射频-数字-供电一体化设计思路,并采用系统级封装(system in package,SiP)芯片实现高密度结构集成。与传统基于砖式或瓦片式收发(transmit/receive,T/R)组件的相控阵天线相比,所提天线设计可以有效降低天线剖面高度和重量。天线中心工作频率为16 GHz,具有600 MHz工作带宽,可实现一维方向波束扫描。此外,天线设计了自校准网络,可用于在轨期间射频通道幅相特性实时检测。样机实测结果表明,天线扫描角度范围可达±30°,等效全向辐射功率(effective isotropic radiated power,EIRP)与接收增益与噪声温度比(gain-to-noise temperature ratio,G/T)值测试结果均与理论计算值吻合。
