band switching

the output filter is a key component of sapf, considering the two indicators of compensation frequency band tracking performance and high-frequency band switching harmonic suppression performance, a parameter computation method of lrc type of output filter is proposed based on the volt-second characteristic.

输出滤波器是SAPF的关键组成部分，综合考虑补偿频段的跟踪性能和高频开关谐波抑制性能这两类指标，提出了基于伏秒特性的LRC型输出滤波器的参数计算方法。

with the increasing complexity of modern radar functions, the frequency source of radar target simulator that has coherent, high frequency, wide band, fast frequency switching, small step, low phase noise, low spurious, is required.

随着现代雷达功能的日趋复杂，往往要求其目标模拟器频率源同时具有全相参、高频率、宽频带、捷变频、小步进、低相噪和低杂散等性能。

The influences of different switching mode of PWM are discussed. Then a practical method, "three-state algorithm of invariable duty cycle under forced output mode" is brought out to eliminate the commutation dead band generated by switching among the output interfaces of PWM waveform.

详细分析了PWM脉冲的不同切换方式对电机换相控制的影响，提出消除换相死区的具体算法&强迫输出方式下的2001年上海大学博士学位论文三状态恒定占空比算法。