The pulseamplitude of narrow band operating approaches to that of broadband operating, it means that, the energy loss caused by narrowing spectrum is only a few.
窄带运转的脉冲幅度接近宽带运转，这意味着由于谱线压窄引起的能量损耗不大。
2
Then it studied the pulse waveform distortion from two aspects of the amplitudespectrum and phase spectrum.