摘要
提出了一种新颖的具有C-型几何结构的小型宽阻带低通滤波器。通过弯曲微带线,缩减了低通滤波器尺寸。采用补偿线和渐变技术对微带线进行调整,使所提出的低通滤波器获得了低插损,同时获得宽阻带。对提出的结构作了加工并进行了实物测量,结果表明,所设计滤波器的通带反射损耗的最大旁瓣幅度为-19.5 dB,阻带(S21<-20 dB)宽度为10.1 GHz,而且面积只有6.28 cm2。
A novel compact wide-stopband low-pass filter（LPF） with C-shape geometry is proposed. By employing C-shape geometry of the microstrip line, the physical size of the proposed structure is reduced significantly compared with the size of the conventional straight structures. By employing compensated microstrip line and linear tapering techniques, the proposed structure achieves lower ripple level in the passband and wide bandwidth in the stopband. The structure is fabricated and measured, and the results show that the maximal return loss sidelobe level is - 19.5 dB, the stopband width （S21 〈 -20 dB） is 10.1 GHz,and the occupied area is only 6.28 cm2.
出处
《电讯技术》
北大核心
2010年第4期74-77,共4页
Telecommunication Engineering
基金
毫米波国家重点实验室自然科学基金项目(K200818)~~
关键词
低通滤波器
微带线
缺陷地面结构
电磁带隙
lowpass filter（LPF）
microstrip line
defected ground structure （DGS）
electromagnetic bandgap（EBG）
