Improved side-coupled three-line wideband bandpass filter

被引：1
|
作者：
Li, Li [1 ]
Lin, Haodong [2 ]
Tian, Shu Lin [1 ]
机构：
[1] Univ Elect Sci & Technol China, Sch Automat Engn, 2006 Xiyuan Ave, Chengdu 611731, Peoples R China
[2] Univ Elect Sci & Technol China, Sch Elect Engn, 2006 Xiyuan Ave, Chengdu 611731, Peoples R China
来源：
MICROWAVE AND OPTICAL TECHNOLOGY LETTERS | 2017年 / 59卷 / 08期
关键词：
short-ended microstrip stub; side-coupled; three-line filter; wideband bandpass filter; DESIGN; RESONATORS;
D O I：
10.1002/mop.30676
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
This letter presents an improved side-coupled three-line filter, which is loaded by two short-ended microstrip stubs. The mechanism of improved filter is that the order of original three-line filter is increased from third order to fifth order. As a result, the fractional reflection bandwidth below -10 dB of improved filter is raised from 75% to 98%, and its selectivity (skirt factor) is enhanced from 64% to 75%. The proposed filter has been fabricated and verified on the substrate of 0.508 mm thickness. It is effective on this thin substrate.
引用
收藏
页码：2075 / 2078
页数：4
相关论文
共 50 条
  • [31] Compact wideband bandpass filter based on coupled line stub with high selectivity
    La, Dong-Sheng
    Guan, Xin
    Wang, Meng-Yuan
    Mi, Rong-Qi
    AEU-INTERNATIONAL JOURNAL OF ELECTRONICS AND COMMUNICATIONS, 2021, 138
  • [32] Design of Wideband Filters With High Skirt-Selectivity Using Improved Parallel-Coupled Three-line Units
    Oda, J.
    Chen, C-P
    Kamata, K.
    Kato, T.
    Kato, N.
    Anada, T.
    Takeda, S.
    2013 ASIA-PACIFIC MICROWAVE CONFERENCE PROCEEDINGS (APMC 2013), 2013, : 957 - 959
  • [33] Planar wideband in-phase power divider using three-line coupled structure
    Henin, Bassem
    Abbosh, Amin
    MICROWAVE AND OPTICAL TECHNOLOGY LETTERS, 2014, 56 (04) : 1010 - 1012
  • [34] Wideband Tunable In-Phase Power Divider Using Three-Line Coupled Structure
    Guo, L.
    Zhu, H.
    Abbosh, A. M.
    IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS, 2016, 26 (06) : 404 - 406
  • [35] Wideband Hybrid Using Three-Line Coupled Structure and Microstrip-Slot Transitions
    Henin, B.
    Abbosh, A.
    IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS, 2013, 23 (07) : 335 - 337
  • [36] Compact Wideband Parallel-Coupled Microstrip Line Bandpass Filter with In-Line Structure
    Shao, Chuan
    Li, Yang
    Wang, Liang
    Jin, Chen
    APPLIED COMPUTATIONAL ELECTROMAGNETICS SOCIETY JOURNAL, 2017, 32 (02): : 153 - 157
  • [37] TRANSIENT ANALYSIS OF MICROSTRIP SIDE-COUPLED FILTER IN THREE-DIMENSIONAL SPACE.
    Koike, Shoichi
    Yoshida, Norinobu
    Fukai, Ichiro
    Transactions of the Institute of Electronics and Communication Engineers of Japan. Section E, 1986, E69 (11): : 1199 - 1205
  • [38] A side-coupled photonic crystal filter with sidelobe suppression
    Li, X. C.
    Wu, J.
    Xu, K.
    Liu, A. Q.
    Lin, T.
    APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING, 2007, 89 (02): : 327 - 332
  • [39] Design of A Wideband Filter With Attenuation Poles Using A Novel Parallel-Coupled Three-line Unit Based on Cross-Coupling
    Chen, Chun-Ping
    Oda, Junya
    Anada, Tetsuo
    IEICE TRANSACTIONS ON ELECTRONICS, 2014, E97C (07) : 689 - 696
  • [40] A side-coupled photonic crystal filter with sidelobe suppression
    X.C. Li
    J. Wu
    K. Xu
    A.Q. Liu
    J.T. Lin
    Applied Physics A, 2007, 89 : 327 - 332
12345