pulse-train frequency spectrum

This method can be applied to different countries' UWB frequency spectrum programming for its flexible control of pulse frequency and bandwidth.2.An improvement is made to the multi-user Prolate Spheroidal Wave Functions ( PSWF) IR UWB orthogonal pulse waveforms design.

该方法具有频率、带宽的灵活可控性，适用于不同国家的UWB频谱规划方案。2.对多用户椭球波函数（PSWF）脉冲UWB正交波形设计方法进行了改进。

互联网摘选

This paper analyzes the principle of time domain measurement function of high per-formance spectrum analyzer and its use in Amplitude modulation ( AM), Frequency modulation ( FM) and pulse modulation test.

本文分析了高性能频谱分析仪时域测量功能的原理，并给出其时域测量功能在调幅、调频、脉冲调制测试中的应用。

互联网摘选

Due to the frequency selectivity and high insertion loss of SAW device, the input must be high pulse whose spectrum width can cover the center frequency of SAW tap delay line.

由于SAW器件具有频率选择性及较高的插入损耗，使得它的输入必须为高脉冲且脉冲的频谱宽度能覆盖SAW抽头延迟线的中心频率。

互联网摘选

The Frequency Spectrum Dsitribution and Time Propagation of Voltage and Current pulse on a Transmission Line.

传输线上脉波电压及电流之频谱分布及时域传播.

互联网摘选

Study on Pulse Doppler Frequency Spectrum Parameter Changes During Left Ventricle Diastolic Period in Healthy People Over 50 Years Old

50岁以上正常人左室舒张期彩色多普勒血流频谱参数变化的研究

互联网摘选