The principle of impulse radio (IR), several kinds of pulse generators, pulse modulation and signal emission for UWB radio, as well as characteristics of UWB-IR are mainly presented and concluded.
重点分析了脉冲无线电方式的原理，脉冲的几种产生方法，调制、发射以及脉冲信号的技术特点。
2
The emission spectra were obtained by using the concentration modulation spectroscopic technique.
采用浓度调制光谱技术对放电辉光光谱进行探测。
3
The numerical simulation results show that the modulation bandwidths is obviously different by varying the active volume at an high spontaneous emission coupling ratio.