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WR-3 Band Quasi-Elliptical Waveguide Filters Using Higher Order Mode Resonances
Ding, Jiang-Qiao1; Shi, Sheng-Cai2,3; Zhou, Kang1; Zhao, Yun4; Liu, Dong2,3; Wu, Wen1
2017-05-01
Source PublicationIEEE TRANSACTIONS ON TERAHERTZ SCIENCE AND TECHNOLOGY
ISSN2156-342X
Volume7Issue:3Pages:302-309
Abstract

Two types of WR-3 band quasi-elliptical waveguide bandpass filters (BPFs) using higher order mode resonators are presented based on physical cross coupling and modal bypass coupling, respectively. Under the situation of physical folded structure, a TE102-mode in an oversized waveguide resonator is utilized to reverse the magnetic field direction of main path to implement a negative cross coupling (Filter-I). Limited to the structure of Filter-I itself, the simulated 3 dB fractional bandwidth (FBW) of 8.5% is slightly narrower than desired 10% FBW. For the other case, two TE101/TE201 overmode resonant cavities with suitable input and output coupling locations are employed to generate two transmission zeros in the vicinity of the passband through modal bypass couplings (Filter-II). The benefit from the realization of the wide-band source and load couplings in the fringe first and fourth oversized cavities is that the FBW of 10% is achieved in the Filter-II. The two BPFs fabricated by computer numerical control milling technology exhibit an insertion loss (IL) of about 0.7 dB and a 3 dB FBW of 8.77% centered at 257.7 GHz (Filter-I), IL of around 0.5 dB, and FBW of 9.83% with center frequency of 256.3 GHz (Filter-II), which are all in good agreement with the simulations. The performance of the two BPFs based on one or two oversized waveguide resonators is highlighted comparing with the reported similar terahertz waveguide filters.

KeywordBandpass filter (BPF) computer numerical control (CNC) milling higher order mode quasi-elliptical terahertz (THz) waveguide
DOI10.1109/TTHZ.2017.2686007
WOS KeywordTECHNOLOGY ; SUBSTRATE ; DESIGN ; GHZ
Indexed BySCI
Language英语
WOS Research AreaEngineering ; Optics ; Physics
WOS SubjectEngineering, Electrical & Electronic ; Optics ; Physics, Applied
WOS IDWOS:000401094100009
PublisherIEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Citation statistics
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/23070
Collection中国科学院紫金山天文台
Corresponding AuthorDing, Jiang-Qiao
Affiliation1.Nanjing Univ Sci & Technol, Sch Elect & Opt Engn, Nanjing 210094, Jiangsu, Peoples R China
2.Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Jiangsu, Peoples R China
3.Chinese Acad Sci, Key Lab Radio Astron, Nanjing 210008, Jiangsu, Peoples R China
4.Univ Shanghai Sci & Technol, Sch Opt Elect & Comp Engn, Shanghai 200093, Peoples R China
Recommended Citation
GB/T 7714
Ding, Jiang-Qiao,Shi, Sheng-Cai,Zhou, Kang,et al. WR-3 Band Quasi-Elliptical Waveguide Filters Using Higher Order Mode Resonances[J]. IEEE TRANSACTIONS ON TERAHERTZ SCIENCE AND TECHNOLOGY,2017,7(3):302-309.
APA Ding, Jiang-Qiao,Shi, Sheng-Cai,Zhou, Kang,Zhao, Yun,Liu, Dong,&Wu, Wen.(2017).WR-3 Band Quasi-Elliptical Waveguide Filters Using Higher Order Mode Resonances.IEEE TRANSACTIONS ON TERAHERTZ SCIENCE AND TECHNOLOGY,7(3),302-309.
MLA Ding, Jiang-Qiao,et al."WR-3 Band Quasi-Elliptical Waveguide Filters Using Higher Order Mode Resonances".IEEE TRANSACTIONS ON TERAHERTZ SCIENCE AND TECHNOLOGY 7.3(2017):302-309.
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