The systems transfer function is analyzed, especially the one of the filter which is connected between VFD and the phase detector, and it should be established on the group delay concept.
根据功能，认为变频器输出电压滤波器的传递函数需要使用群时延概念，为更精确地分析这类问题提供了依据。
Group delay and dispersion characters are analyzed according to the above filter. In addition, the dynamic tunable feature is discussed.
详细分析了滤波器的群时延特性和色散特性，讨论了该滤波器的动态可调谐性质。
The OFDM system is very strict in orthogonality of sub-carries, thus it is extremely sensitive to the filter group delay.
OFDM系统对子载波间的正交性要求极其严格，因此对滤波器群延时较敏感。
The sample rate, filter corner frequency, settling time, group delay and output word rate will be reduced also, as these are proportional to the external clock frequency.
由于采样速率、滤波器转折频率、建立时间、群延迟和输出字速率与外部时钟频率呈比例变化关系，因此这些参数也会相应降低。
This group-delay equalizer can follow any type of HTS microstrip filter in order to reduce phase distortion, enhance group-delay performance, and improve communication quality.
该群时延均衡器能与不同类型超导微带滤波器级联，实现相位均衡，减小相位失真，改善接收机前端信号群时延特性，提高通信质量。
It describes clearly the software of vector signal demodulation, including the frequency offset calculation, magnitude and group-delay compensate, and pulse shaping filter.
在软件方面，详细介绍和分析了矢量信号解调分析软件设计与实现，其中包括载频频偏计算、幅度和群时延补偿、脉冲成形滤波器设计等。
It describes clearly the software of vector signal demodulation, including the frequency offset calculation, magnitude and group-delay compensate, and pulse shaping filter.
在软件方面，详细介绍和分析了矢量信号解调分析软件设计与实现，其中包括载频频偏计算、幅度和群时延补偿、脉冲成形滤波器设计等。
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