英语翻译Periodic structures generally exhibit passband and stopband characteristics in various bands of wave number determined by the nature of the structure.This was originally studied in the case of waves in crystalline lattice structures,but t

英语翻译Periodic structures generally exhibit passband and stopband characteristics in various bands of wave number determined by the nature of the structure.This was originally studied in the case of waves in crystalline lattice structures,but t
英语翻译
Periodic structures generally exhibit passband and stopband characteristics in various bands of wave number determined by the nature of the structure.This was originally studied in the case of waves in crystalline lattice structures,but the results are more general.The presence or absence of propagating wave can be determined by inspection of the k-β or ω-β diagram.For our purposes it's enough to know the generality that periodic structures give rise to bands that are passed and bands that are stopped.
To construct specific filters,we'd like to be able to relate the desired frequency characteristics to the parameters of the filter structure.The general synthesis of filters
proceeds from tabulated low-pass prototypes.Ideally,we can relate the distributed parameters to the corresponding parameters of lumped element prototypes.
As we will see,the various forms of filter passband and stopband can be realized in distributed filters as well as in lumped element filters.
Over the years,lumped element filters have been developed that are non-minimum phase;that is,the phase characteristics are not uniquely determined by the amplitude characteristics.This technique permits the design of filters for communications systems that could not be constructed using only minimum phase filter concepts.This generally requires coupling between multiple sections,and can be extended to distributed filters.
The design of microwave filters is comprehensively detailed in the famous Stanford Research Institute publication1 Microwave Filters,Impedance Matching Networks and Coupling Structures.
翻译的通顺一定追加分,最低40
好多专业名词都没翻出来……

英语翻译Periodic structures generally exhibit passband and stopband characteristics in various bands of wave number determined by the nature of the structure.This was originally studied in the case of waves in crystalline lattice structures,but t
不太通顺,不好意思
周期结构一般展品通和阻带的特点在各个阶的波数的性质决定的结构.这本来是研究,在案件波的结晶网格结构,但结果是更普遍的.的存在或缺乏宣传波,可确定检查的K - β或ω - β图.为我们的目的,它的足够了解的一般性认为,周期结构引起阶是通过和乐队都已停止.
建设具体的过滤器,我们希望能够与理想的频率特性,以参数的过滤器结构.一般的合成过滤器
从表列的收益,低通原型.理想的情况是,我们可以与分布式参数,以相应的参数集总元素的原型.
正如我们将看到,各种形式的过滤器和通阻,才能实现在分布式过滤器,以及在集中元素的过滤器.
多年来,集中元素的过滤器已开发有非最小相位,这就是第二阶段的特点是不是非常确定的振幅的特点.这一技术的许可证,设计过滤器的通讯系统无法建造只用最小相位滤波器的概念.这通常需要之间的耦合多个区段,并可以扩大到分布式过滤器.
设计微波滤波器是全面详细的在著名的斯坦福研究所publication1微波滤波器,阻抗匹配网络与耦合结构.