| 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。 |
| 关键词: 低通滤波器 微带线 缺陷地面结构 电磁带隙 |
| DOI： |
|
| 基金项目: |
|
| A Novel Compact Wide stopband Low pass Filter |
| ZHOU Ming,TONG Cuang-ming,FU Shu-hong,WU Li-nan,NI Guo-qi |
| (The Missile Institute,Air Force Engineering University, Sanyuan 713800,China;State Key Laboratory of Millimeter Waves, Nanjing 210096,China;G
uilin Air Force Academy,Guilin 541003,China) |
| Abstract: |
| A novel compact widestopband lowpass filter(LPF) with Cshape geometr
y is proposed. By employing Cshape geometry of the microstrip line, the physic
a
l size of the proposed structure is reduced significantly compared with the size
o
f the conventional straight structures. By employing compensated microstrip line
and linear tapering techniques, the proposed structure achieves lower ripple le
vel in the passband and wide bandwidth in the stopband. The structure is fabric
ated and measured, and the results show that the maximal return loss sidelobe le
vel is -19.5 dB, the stopband width (S21<-20 dB) is 10.1 GHz,and the
occupied area is only 6.28 cm2. |
| Key words: lowpass filter(LPF) microstrip line defected ground structure (DGS) ele
ctromagnetic bandgap (EBG) |
