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Abstract：
This proposed design presents a novel bandpass filter employing a Marchand balun to attain ultra-wideband (UWB) performance extending from 3.1 to 10.7 GHz with 6.8 GHz central frequency and 110% FBW. The UWB bandpass filter\'s fractional bandwidth can be tailored owing to the diverse input/output impedances of the planar Marchand balun. This adaptability is accomplished by connecting two planar Marchand baluns consecutively, leveraging the concepts of transversal filter ideas and multilayer LCP technology resulting in 0.3 dB and 12 dB insertion and return losses respectively. In-depth guidelines for the formulation and synthesis of the UWB bandpass filter are incorporated.
摘要：
此建议的设计提出了一种新颖的带通滤波器，采用Marchand巴伦来获得超宽带（UWB）性能，该性能从3.1扩展到10.7GHz，具有6.8GHz的中心频率和110％的FBW。由于平面Marchandbalun的不同输入/输出阻抗,可以调整UWB带通滤波器的分数带宽。这种适应性是通过连续连接两个平面Marchandbalun来实现的，利用横向滤波器思想和多层LCP技术的概念，分别导致0.3dB和12dB的插入和回波损耗。结合了UWB带通滤波器的配方和合成的深入指南。
