400 GHz Easy-Packaging Waveguide Filters Based on Mixed-Mode and Off-Axis Couplings
Filters play an invaluable role in most detection and communication systems, blocking unwanted, harmonic or mirrored waves. In this paper, two <inline-formula> <tex-math notation="LaTeX">$3^{\mathrm {rd}}$ </tex-math></inline-formula>-order quasi-elliptical waveguid...
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| Format: | Article |
| Language: | English |
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IEEE
2021-01-01
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| Series: | IEEE Access |
| Subjects: | |
| Online Access: | https://ieeexplore.ieee.org/document/9438687/ |
| _version_ | 1819095582850940928 |
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| author | Jie Wang Yun Zhao Jiang-Qiao Ding |
| author_facet | Jie Wang Yun Zhao Jiang-Qiao Ding |
| author_sort | Jie Wang |
| collection | DOAJ |
| description | Filters play an invaluable role in most detection and communication systems, blocking unwanted, harmonic or mirrored waves. In this paper, two <inline-formula> <tex-math notation="LaTeX">$3^{\mathrm {rd}}$ </tex-math></inline-formula>-order quasi-elliptical waveguide bandpass filters working at 400 GHz are developed based on TE<sub>102</sub>-mode oversized resonators. Transmission zeros are generated through the physical cross-couplings and the mixed modal bypass couplings. <inline-formula> <tex-math notation="LaTeX">$H$ </tex-math></inline-formula>-plane off-axis coupling structures without any fragile irises are adopted to strengthen robustness and simplify manufacturing at such high terahertz frequencies. Effects of processing uncertainties on filters performance are discussed in detail to display error sensitivity. Two computer numerical control (CNC) machined filters exhibit a minimum insertion loss of about 1.5 dB in a 3 dB fractional bandwidth (FBW) with 12% centered at 390 GHz @ Filter-I, and 9% FBW with a center frequency of 394 GHz @ Filter-II, which are all mainly agreement with simulations. The performance is highlighted with the reported terahertz filters, which indicates that both architectural designs are still suited for the delicate CNC-milling restriction in such high WR-2.2 band. |
| first_indexed | 2024-12-21T23:45:36Z |
| format | Article |
| id | doaj.art-24ee82932cf54625a087c53a4f7119bd |
| institution | Directory Open Access Journal |
| issn | 2169-3536 |
| language | English |
| last_indexed | 2024-12-21T23:45:36Z |
| publishDate | 2021-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Access |
| spelling | doaj.art-24ee82932cf54625a087c53a4f7119bd2022-12-21T18:46:06ZengIEEEIEEE Access2169-35362021-01-019766427664810.1109/ACCESS.2021.30825699438687400 GHz Easy-Packaging Waveguide Filters Based on Mixed-Mode and Off-Axis CouplingsJie Wang0https://orcid.org/0000-0002-1933-1593Yun Zhao1https://orcid.org/0000-0002-9579-8275Jiang-Qiao Ding2https://orcid.org/0000-0003-0497-0816School of Electronic and Information Engineering, Nanjing University of Information Science and Technology, Nanjing, ChinaSchool of Electronic and Information Engineering, Nanjing University of Information Science and Technology, Nanjing, ChinaSchool of Electronic and Information Engineering, Nanjing University of Information Science and Technology, Nanjing, ChinaFilters play an invaluable role in most detection and communication systems, blocking unwanted, harmonic or mirrored waves. In this paper, two <inline-formula> <tex-math notation="LaTeX">$3^{\mathrm {rd}}$ </tex-math></inline-formula>-order quasi-elliptical waveguide bandpass filters working at 400 GHz are developed based on TE<sub>102</sub>-mode oversized resonators. Transmission zeros are generated through the physical cross-couplings and the mixed modal bypass couplings. <inline-formula> <tex-math notation="LaTeX">$H$ </tex-math></inline-formula>-plane off-axis coupling structures without any fragile irises are adopted to strengthen robustness and simplify manufacturing at such high terahertz frequencies. Effects of processing uncertainties on filters performance are discussed in detail to display error sensitivity. Two computer numerical control (CNC) machined filters exhibit a minimum insertion loss of about 1.5 dB in a 3 dB fractional bandwidth (FBW) with 12% centered at 390 GHz @ Filter-I, and 9% FBW with a center frequency of 394 GHz @ Filter-II, which are all mainly agreement with simulations. The performance is highlighted with the reported terahertz filters, which indicates that both architectural designs are still suited for the delicate CNC-milling restriction in such high WR-2.2 band.https://ieeexplore.ieee.org/document/9438687/CNC-millingeasy-packagingoff-axis couplingoversized cavitiesterahertzwaveguide filter |
| spellingShingle | Jie Wang Yun Zhao Jiang-Qiao Ding 400 GHz Easy-Packaging Waveguide Filters Based on Mixed-Mode and Off-Axis Couplings IEEE Access CNC-milling easy-packaging off-axis coupling oversized cavities terahertz waveguide filter |
| title | 400 GHz Easy-Packaging Waveguide Filters Based on Mixed-Mode and Off-Axis Couplings |
| title_full | 400 GHz Easy-Packaging Waveguide Filters Based on Mixed-Mode and Off-Axis Couplings |
| title_fullStr | 400 GHz Easy-Packaging Waveguide Filters Based on Mixed-Mode and Off-Axis Couplings |
| title_full_unstemmed | 400 GHz Easy-Packaging Waveguide Filters Based on Mixed-Mode and Off-Axis Couplings |
| title_short | 400 GHz Easy-Packaging Waveguide Filters Based on Mixed-Mode and Off-Axis Couplings |
| title_sort | 400 ghz easy packaging waveguide filters based on mixed mode and off axis couplings |
| topic | CNC-milling easy-packaging off-axis coupling oversized cavities terahertz waveguide filter |
| url | https://ieeexplore.ieee.org/document/9438687/ |
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