基于分形缺陷地结构的锐截止宽阻带低通滤波器
发布时间：2018-07-13 09:09
【摘要】：为解决传统的微带低通滤波器的宽阻带、窄过渡带和小型化性能不能兼顾的矛盾,本文设计出一种基于Hilbert分形DGS的微带低通滤波器。Hilbert分形DGS单元和半圆型并联枝节谐振单元级联构成该低通滤波器,Hilbert分形DGS单元可减小结构尺寸和通带内的反射损耗,并联谐振单元可有效抑制高次谐波分量。此外,针对DGS单元对微带线特性阻抗的影响,采用渐变微带线进行阻抗补偿,使滤波器的通带与阻带性能获得明显改善。测试结果显示滤波器通带范围为0~5.2GHz时,通带插入损耗0.3dB,阻带范围5.8~20.0GHz以上,面积为23.6mm×9.5mm。
[Abstract]:In order to solve the contradiction between wide stopband, narrow transition band and miniaturization performance of traditional microstrip low-pass filter, In this paper, a microstrip low pass filter based on Hilbert fractal DGS. Hilbert fractal DGS element and half circular parallel branch resonance unit are designed to construct the low pass filter Hilbert fractal DGS unit which can reduce the structure size and the reflection loss in the passband. Parallel resonant elements can effectively suppress high harmonic components. In addition, in view of the influence of DGS element on the characteristic impedance of microstrip line, the impedance compensation is carried out by using gradual microstrip line to improve the passband and stopband performance of the filter. The test results show that when the pass band range of the filter is 0 ~ 5.2GHz, the passband insertion loss is 0.3 dB, the stopband range is more than 5.8 ~ 20.0 GHz, and the area is 23.6mm 脳 9.5 mm.
【作者单位】： 湖北大学计算机与信息工程学院;武汉滨湖电子有限责任公司;
【基金】：国家自然科学基金资助项目(51472079)
【分类号】：TN713.4
[Abstract]:In order to solve the contradiction between wide stopband, narrow transition band and miniaturization performance of traditional microstrip low-pass filter, In this paper, a microstrip low pass filter based on Hilbert fractal DGS. Hilbert fractal DGS element and half circular parallel branch resonance unit are designed to construct the low pass filter Hilbert fractal DGS unit which can reduce the structure size and the reflection loss in the passband. Parallel resonant elements can effectively suppress high harmonic components. In addition, in view of the influence of DGS element on the characteristic impedance of microstrip line, the impedance compensation is carried out by using gradual microstrip line to improve the passband and stopband performance of the filter. The test results show that when the pass band range of the filter is 0 ~ 5.2GHz, the passband insertion loss is 0.3 dB, the stopband range is more than 5.8 ~ 20.0 GHz, and the area is 23.6mm 脳 9.5 mm.
【作者单位】： 湖北大学计算机与信息工程学院;武汉滨湖电子有限责任公司;
【基金】：国家自然科学基金资助项目(51472079)
【分类号】：TN713.4
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