一种小型化的超宽带微带带通滤波器的设计  

Design of a compact ultra-wideband microstrip band-pass filter

作　　者：艾明贵 梁显锋[1] 

机构地区：[1]中国科学院空间科学与应用研究中心,北京100190 [2]中国科学院大学,北京100190

出　　处：《电子设计工程》2015年第24期113-115,共3页Electronic Design Engineering

摘　　要：提出了一种小型化超宽带(UWB)带通滤波器的设计方案。带通滤波器由一个环形槽线谐振器和两对嵌入式的圆形槽线结构组成,环形槽线谐振器用来获得良好UWB通带特性,圆形槽线结构可抑制阻带内的谐波。相对于利用级联低通滤波器抑制谐波的方法,这种结构能够有效地减小电路尺寸。基于该结构设计的滤波器尺寸仅为。仿真和测试结果表明,滤波器具有良好的谐波抑制作用,上阻带的工作频率达到20 GHz,抑制电平达到-20 d B。A compact uhra-wideband （UWB） band-pass filter （BPF）with a ring slot-line resonator and two pairs of embedded circular slot-line is proposedin this article. In the filter, the targeted UWB pass-band characteristics with the ring slot-line resonator is implemented,the spurious harmonics in the upper-stop band is suppressed by embedding the circular slot-line structures.Compared to the method of cascading band stop filter （BSF） ,the circuit size of the filter is reduced significantly. A prototype filter with compact size （13.82-6.7 mm2） based on the proposed structure is implemented.Both of the simulated and measured results showed that the UWB band-pass filter had a good performance in harmonic suppression, and the upperstopband with more than -20 dB attenuation was up to 20 GHz.

关 键 词：超宽带 环形槽线谐振器 谐波抑制 上阻带 

分 类 号：TN61[电子电信—电路与系统]