single frequency signalling वाक्य

Single frequency signalling
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