基于闭合环和短路棒的宽阻带带通滤波器

Wide Stopband Bandpass Filter Based on Closed Loops and Short-circuited Bar

为减小微带宽阻带带通滤波器的结构尺寸,抑制滤波器的高次谐波干扰,拓宽滤波器阻带,提出一种新的基于闭合环和短路棒的紧凑型宽阻带带通滤波器。该滤波器采用闭合环和短路棒结构,将滤波器设计为改进型1/4波长谐振器结构的宽阻带带通滤波器,以达到抑制高次谐波,减小滤波器尺寸的目的。实验结果表明该方法具有良好的效果。

In order to reduces the design size of microstrip wide stopband bandpass filter and achieves the spurious suppression and wide stopband, a new compact microstrip wide stopband bandpass filter based on closed loops and short-circuited bar is designed. This filter makes use of closed loops and short-circuited bar to obtain improved A/4 resonator structure and realize the wide stopband bandpass filter, and then spurious suppression and miniaturi- zation are achieved. Experimental results has demonstrated the designed filter available.