摘要
在通信信号密集、信号强度差别大的背景下,为保证多路接收系统既不饱和又不漏掉微弱的小信号,需要接收通路具有较大动态,同时还要求较低的噪声系数。针对大规模接收系统几项重要指标,如隔离度、噪声系数及动态值等,在反复设计基础上,对射频交换矩阵设备进行了仿真及试验。通过测试数据分析,各项指标达到综合权衡。多路射频全交换矩阵的技术设计方法可以获得较高接收性能。
In view of high signal density and large difference of signal intensity,in order to ensure the multi-channel receiving system being unsaturated and obtaining weak signals,it is required that the receiving channel has a large dynamic range and lower noise figure.Aiming at such key specifications of large-scale receiving system as isolation,noise figure and dynamic value,etc.,the simulation and experiment are implemented for RF exchange matrix equipment based on multiple designs.The results show that the tradeoff of specifications are performed.The technical design method of multi-channel RF exchange matrix has higher receiving performance.
作者
温明艳
WEN Mingyan(The 54th Research Institute of CETC, Shijiazhuang 050081, China)
出处
《无线电工程》
2019年第8期720-723,共4页
Radio Engineering
关键词
多路
噪声系数
隔离度
射频交换矩阵
multi-channel
noise figure
isolation degree
RF exchange matrix
