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A new Synthesis Method for Equiripple Dual-Passband Microwave Filters

机译:等波纹双通带微波滤波器的一种新的合成方法

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This paper introduces one new method to synthesize S parameters' polynomials of dual-passband filters, which have two passbands separated by one stopband. Both symmetric and asymmetric dual-passband filters can employ this method. A serial of optimization procedures were carried on to optimize one function with the band edges of stopbands as variables. The band edges of stopbands have their own ranges reassured by the design specifications. The optimization procedures begin with initial values of transmission zeros, which are the function of stopbands edges, and reflection zeros according to specifications. A characteristic that in every frequency band is equiripple and the maximum return loss in passbands are optimum same is obtained after the optimization. Three design examples are given out at the end of this paper.
机译:本文介绍了一种合成双通滤波器的S参数多项式的新方法,该方法具有两个通带,一个阻带隔开。对称和非对称双通带滤波器都可以采用此方法。进行了一系列优化程序,以阻带的频带边缘作为变量来优化一个函数。阻带的带边缘具有自己的范围,可以通过设计规范来保证。优化程序从传输零的初始值开始,该零是阻带边缘的函数,而反射零则根据规格。在优化之后,获得了在每个频带上均等波纹并且通带的最大回波损耗最佳的特性。本文末尾给出了三个设计实例。

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