single frequency signalling meaning in Chinese

单频信令

Single frequency signalling
单频信令
This dissertation is mainly concerned about the radiation of the tem - horn arrays which radiate uwb ( ultra wideband ) pulse , it mainly involves three parts : theory , numerical stimulation and experiment . the uwb antenna is a new research field in the world which has many differences from nb ( narrow band ) antenna . the most difference is that the uwb antenna such as tem - horn radiates nanosecond pulse which has wide frequency spectrum , but the nb antenna radiates single frequency signal
超宽带天线是一项新兴的研究领域，它与窄带天线有很多不同之处，最根本的不同在于：超宽带天线例如tem喇叭天线是辐射纳秒级短脉冲信号，这种脉冲信号有很宽的频谱；而窄带天线大都是辐射单一频率时谐信号的。