在这些情况下，可向开关加入滤波器来改变信号的频率带宽，或者从发射到DUT的信号中消除有害频率的杂散信号。
In these cases, filters can be added to the switch to modify the signal frequency bandwidth, or spurious signals at unwanted fre quencies can be eliminated from the signal to the DUT.
同时随机化零矢量，通过约束保证平均开关频率等于采样频率。
Zero vectors are randomized with the sample frequency and the average switching frequency equals to sample frequency with some constraint.
介绍了数字化开关电容滤波技术，并设计了可以通过改变开关时钟频率来自由调整中心频率的开关电容带阻滤波器，使中心频率具有很高的精度和稳定度。
Meanwhile, the switched capacitor notch filter is designed, which can adjust center frequency freely by changing the switching clock frequency and make the center frequency highly accurate and stable.
理论分析和仿真结果表明，在输出频率不是很高，开关频率非常高，且考虑到死区的影响时，基于新型空间矢量选择模式的逆变器具有比传统SVPWM更好的输出特性。
Theory analysis and simulation show it's output performance is better than traditional SVPWM, when the output frequency is not high, switch frequency is very high and dead zone is considered.
倍频式感应加热电源负载输出频率为功率开关管工作频率的二倍，且功率开关器件工作时具有软开关特性，在需要高频应用的场合很有意义。
Since its output frequency is as twice as the device frequency and it has the merit of soft-switching characteristic, multiple-frequency induction heater is widely used in high frequency application.
为了研究开关式电容滤波器的输出特性和频率响应，采用了连续系统时域分析方法，建立了滤波器的输出特性模型和频率响应模型，并进行了仿真。
A method of time field analysis in continuous system is adopted to study the output characteristic and the frequency response of switch type capacitor filter.
在第二子模式（“低输出功率子模式”）中，使用脉冲宽度调制来调节VOUT，但转换器开关频率固定在第一频率。
In a second sub-mode ('low output power sub-mode'), VOUT is regulated using pulse width modulation, but the converter switching frequency is fixed at a first frequency.
在某些实施例中，转换器具有第三子模式(“高输出功率子模式”)，其中使用脉冲宽度调制，但开关频率固定在第二频率。
In some embodiments, the converter has a third sub-mode (' high output power sub-mode '), in which pulse width modulation is used but the switching frequency is fixed at a second frequency.
同时给出了在不同的声光开关时间的输出脉冲特性，描述和讨论了输出的单重复频率脉冲和半重复频率脉冲现象。
Meanwhile, the behaviors of Q-switched pulses are achieved by regulating the switching time of AOM. The single-repetition-rate and half-repetition-rate phenomena are described and discussed.
并采用高集成度的开关电容滤波器，系统的采样频率和反混迭滤波器的截止频率可在一定范围内任意给定。
Using the highly-integrated Switch-Capacitor filter, the sampling rate and the cut-off frequency of the anti-alias filter can be arbitrarily selected within some range.
反之，通过根据升压时的开关频率来降低降压时的开关频率，可弥补 降压比的不足部分。
Conversely, step-down ratio insufficiency is compensated for by making the switching frequency during the step-down operation lower than the switching frequency during the step-up operation.
反之，通过根据升压时的开关频率来降低降压时的开关频率，可弥补 降压比的不足部分。
Conversely, step-down ratio insufficiency is compensated for by making the switching frequency during the step-down operation lower than the switching frequency during the step-up operation.
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