摘要
为有效抑制印度国家卫星通信C频段和X卫星频段对超宽带通信系统的干扰,提出了一种新型双陷波超宽带滤波器。该滤波器采用阶梯T型多模谐振器(multimode resonator,MMR)与缺陷地结构(defected ground structure,DGS)的交趾耦合,实现超宽带特性。采用非对称耦合线及在MMR两侧耦合分裂环谐振器的方法,分别在6.67~7.06 GHz,7.47~7.57 GHz两个频段内产生陷波。实测结果与仿真结果吻合较好,该滤波器的通带范围为3.03~11.50 GHz,3 dB带宽达到123%,插入损耗仅有0.87 dB,两处陷波中心频率分别在6.87 GHz和7.52 GHz,陷波深度均大于20 dB,且整体尺寸紧凑,仅有16 mm×8 mm大小。
In order to effectively suppress the interference of the C-band of the Indian National Satellite Communication and X-satellite frequency bands to the ultra-wideband communication system,a new type of dual notch bands UWB filter is proposed.The filter adopts the intersection with a stepped T-type multimode resonator(MMR)and a defective ground structure(DGS)to achieve ultra-wideband characteristics.Using asymmetric coupling lines and coupling split ring resonators on both sides of the MMR,notchs are generated in the two frequency bands of 6.67~7.06 GHz and 7.47~7.57 GHz respectively.The measured results are in good agreement with the simulation results.The passband range of the filter is 3.03~11.50 GHz,the 3 dB bandwidth reaches 123%,the insertion loss is only 0.87 dB,and the center frequencies of the two notches are at 6.87 GHz and 7.52 GHz,respectively.The depth of notch bands is greater than 20 dB,and the overall size is compact,only 16 mm×8 mm.
作者
高明明
张雪曼
南敬昌
Gao Mingming;Zhang Xueman;Nan Jingchang(School of Electronic and Information Engineering,Liaoning Technical University,Huludao 125105,China;School of Information Science and Technology,Dalian Maritime University,Dalian 116026,China)
出处
《电子测量与仪器学报》
CSCD
北大核心
2022年第4期187-194,共8页
Journal of Electronic Measurement and Instrumentation
基金
国家自然科学基金青年科学基金(61701211)
国家自然科学基金(61971210)
北京市科技计划项目:基于硬件加速的三维重建体育展示平台(Z201100005820010)
辽宁工程技术大学横向课题:基于压缩感知的图像传输与重构技术研究(21-2067)项目资助
关键词
超宽带
陷波特性
阶梯T型谐振器
SRR谐振器
缺陷地结构
ultra-wideband
notch characteristics
stepped T-type resonator
SRR resonator
defected ground structure
