对幅频特性和群时延特性进行精细调整。
The amplitude and group delay characteristics can be controlled exactly.
而对相频特性优化的目的是要在通带内获得平坦的群时延特性。
The purpose of optimizing phase response characteristic is to obtain flat group delay characteristic at Pass band.
通过理论推导得出非理想的BPF的群时延特性，对系统输出信号会造成干扰。
The deduced result shows that the non-ideal group delay characteristic of BPF will cause interference on the output signal of the OFDM system.
首先从理论上分析了射频BPF的群时延特性对OFDM系统产生影响的原因。
First of all, the reasons of the effects of BPF group delay on the OFDM system is deduced in theory.
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。
Group delay and dispersion characters are analyzed according to the above filter. In addition, the dynamic tunable feature is discussed.
因此，它在带外衰减与带内幅度特性和带内群时延特性之间有了一个较好的折中。
Therefore, there is a perfect compromise between attenuation in stopband and group delay or loss variation in passband.
本文的研究结论为射频系统中设计发射机BPF的群时延特性设计提供了参考依据。
The result of the research supplies a reference to the design of group delay of BPF in the RF system.
本论文主要研究OFDM系统中的射频BPF的群时延特性对OFDM接收机误码率的影响。
This paper is to research the effects of the RF BPF group delay characteristics on the bit error rate (BER) of the OFDM receiver.
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。
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.
群时延是系统和网络的一项重要传输特性，它表征系统和网络的线性失真。
The group delay, which characterizes the linear distortion of the system and network, is an important transmission characteristic.
这种滤波器采用灵活的拓扑结构和耦合结构，可以实现传输零点，从而提高滤波器带外抑制特性，或者使群时延更加平坦。
Flexible topology and coupling structures are used to realize transmission zeros, thereby enhancing the stop band rejection or making more flat group delay.
这种滤波器采用灵活的拓扑结构和耦合结构，可以实现传输零点，从而提高滤波器带外抑制特性，或者使群时延更加平坦。
Flexible topology and coupling structures are used to realize transmission zeros, thereby enhancing the stop band rejection or making more flat group delay.
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