微带交指滤波器抽头的结构改进

doi:10.3788/OPE.20182609.2261

	微带交指滤波器抽头的结构改进
	Zhang, Da-Peng; 张大鹏; Gao, Yang; Wen, Shu-Wen
刊名	光学精密工程
	2018
卷号	26 期号:9 页码:2261-2268
ISSN号	1004-924X
DOI	10.3788/OPE.20182609.2261
其他题名	Structure improvement of tapped-line in microstrip interdigital filter
文献子类	Article
英文摘要	According to the theory of coupled resonant circuits, the design of the microstrip interdigital filter is quite flexible. However, when the substrate thickness and the center frequency increase to a certain value, the external quality factor Qe cannot reach the theoretical value when using the traditional 50 Ω tapped-line. In order to increase the Qe in the actual design and match the source and load, the traditional tapped-line structure was improved to an SIR-like tapped-line, with the combination of a 50 Ω microstrip line and a narrower microstrip line. To reduce the return loss caused by the step change of the microstrip line, the SIR-like tapped-line was improved to a gradual tapped-line with the combination of a 50 Ω microstrip line and a narrower microstrip line. Then, taking a Ka-band filter as an example, the microstrip interdigital filter was designed by using the SIR-like tapped-line and the gradual tapped-line, respectively. The simulation indicates that both the Qe of the SIR-like tapped-line and the gradual tapped-line can match the theoretical values. In addition, compared with the filter with the SIR-like tapped-line, the return loss of the filter with a gradual tapped-line is reduced by 8.31 dB, and its insertion loss is reduced by 0.16 dB. The feasibility of the proposed two kinds of tapped-line structure improvement is verified. © 2018, Science Press. All right reserved.
语种	中文
CSCD记录号	CSCD:6337425
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/286985]
专题	高能物理研究所_实验物理中心
作者单位	中国科学院高能物理研究所
推荐引用方式 GB/T 7714	Zhang, Da-Peng,张大鹏,Gao, Yang,等. 微带交指滤波器抽头的结构改进[J]. 光学精密工程,2018,26(9):2261-2268.
APA	Zhang, Da-Peng,张大鹏,Gao, Yang,&Wen, Shu-Wen.(2018).微带交指滤波器抽头的结构改进.光学精密工程,26(9),2261-2268.
MLA	Zhang, Da-Peng,et al."微带交指滤波器抽头的结构改进".光学精密工程 26.9(2018):2261-2268.