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介绍了一种悬置带线超宽带高通滤波器。该滤波器采用了悬置带线结构,可以提供很高的Q值,减小了滤波器的插入损耗,具有极好的矩形度。这种结构还提供了双面电路,制作成宽边耦合线,可以解决微带线的边缘耦合量不够的问题。从高通滤波器的集总原型入手,分析了集总元件转换为悬置带线结构的实现过程,并且给出了仿真结果和实际测量的曲线。测量结果表明,用这种方法实现的超宽带高通滤波器带通可以到几个倍频程,具有很宽的通带,在各种宽带系统中有着广泛的应用,并且具有低损耗、小体积的优点,拥有广阔的应用前景。
A kind of suspension line ultra-wideband high-pass filter is introduced. The filter with suspended strip structure, can provide high Q value, reducing the insertion loss of the filter, with excellent rectangularness. This structure also provides a double-sided circuit, made into wide-side coupling lines, microstrip line edge can solve the problem of insufficient coupling. Starting from the lumped prototype of the high-pass filter, the realization of the conversion of the lumped elements to the suspended stripline structure is analyzed, and the simulation results and the curves of the actual measurement are given. The measurement results show that the ultra-wideband high-pass filter bandpass achieved by this method can reach several octaves with a wide passband and is widely used in various wideband systems and has the advantages of low loss, small volume The advantages of having a broad application prospects.