Compact <italic>Ku</italic>-Band Orthomode Transducer Using Plus-Shaped Waveguide
This paper presents a compact Ku-band orthomode transducer (OMT) utilizing a plus-shaped waveguide (P-WG), which allows for the effective separation of vertical and horizontal polarization fields in a compact form factor. The proposed P-WG, with a characteristic impedance intermediate between that o...
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| Format: | Article |
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IEEE
2025-01-01
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| Series: | IEEE Access |
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| Online Access: | https://ieeexplore.ieee.org/document/10855630/ |
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| author | Jongmin Lee Sungmin Noh Sangpil Lee Jinho Jeong |
| author_facet | Jongmin Lee Sungmin Noh Sangpil Lee Jinho Jeong |
| author_sort | Jongmin Lee |
| collection | DOAJ |
| description | This paper presents a compact Ku-band orthomode transducer (OMT) utilizing a plus-shaped waveguide (P-WG), which allows for the effective separation of vertical and horizontal polarization fields in a compact form factor. The proposed P-WG, with a characteristic impedance intermediate between that of the input square waveguide (S-WG) and the output rectangular waveguide (R-WG), enables the use of an iris for impedance matching instead of a bulky multi-step impedance transformer, thereby facilitating miniaturization. Additionally, small-square waveguides (SS-WGs) are employed to effectively suppress in-band spurious resonances, further broadening the bandwidth. Measurements of the fabricated OMT demonstrate notable characteristics: return loss exceeding 10 dB for vertical polarization from 13.5 to 17.5 GHz and for horizontal polarization from 13.6 to 16.7 GHz, insertion loss below 0.8 dB, isolation over 46 dB, and cross-polarization levels above 41 dB, confirming its suitability for Ku-band applications. |
| format | Article |
| id | doaj-art-c0917aa566de4287b3aaf4a34cd0a10f |
| institution | Kabale University |
| issn | 2169-3536 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Access |
| spelling | doaj-art-c0917aa566de4287b3aaf4a34cd0a10f2025-02-07T00:01:14ZengIEEEIEEE Access2169-35362025-01-0113226562266210.1109/ACCESS.2025.353550310855630Compact <italic>Ku</italic>-Band Orthomode Transducer Using Plus-Shaped WaveguideJongmin Lee0https://orcid.org/0009-0008-9950-0596Sungmin Noh1https://orcid.org/0009-0005-9353-9113Sangpil Lee2Jinho Jeong3https://orcid.org/0000-0003-2487-6958Department of Electronic Engineering, Sogang University, Seoul, South KoreaC4I Research Center, LIG NEX1, Seongnam-si, Gyeonggi-do, South KoreaC4I Research Center, LIG NEX1, Seongnam-si, Gyeonggi-do, South KoreaDepartment of Electronic Engineering, Sogang University, Seoul, South KoreaThis paper presents a compact Ku-band orthomode transducer (OMT) utilizing a plus-shaped waveguide (P-WG), which allows for the effective separation of vertical and horizontal polarization fields in a compact form factor. The proposed P-WG, with a characteristic impedance intermediate between that of the input square waveguide (S-WG) and the output rectangular waveguide (R-WG), enables the use of an iris for impedance matching instead of a bulky multi-step impedance transformer, thereby facilitating miniaturization. Additionally, small-square waveguides (SS-WGs) are employed to effectively suppress in-band spurious resonances, further broadening the bandwidth. Measurements of the fabricated OMT demonstrate notable characteristics: return loss exceeding 10 dB for vertical polarization from 13.5 to 17.5 GHz and for horizontal polarization from 13.6 to 16.7 GHz, insertion loss below 0.8 dB, isolation over 46 dB, and cross-polarization levels above 41 dB, confirming its suitability for Ku-band applications.https://ieeexplore.ieee.org/document/10855630/Orthomode transducerpolarizationspurious resonancewaveguide |
| spellingShingle | Jongmin Lee Sungmin Noh Sangpil Lee Jinho Jeong Compact <italic>Ku</italic>-Band Orthomode Transducer Using Plus-Shaped Waveguide IEEE Access Orthomode transducer polarization spurious resonance waveguide |
| title | Compact <italic>Ku</italic>-Band Orthomode Transducer Using Plus-Shaped Waveguide |
| title_full | Compact <italic>Ku</italic>-Band Orthomode Transducer Using Plus-Shaped Waveguide |
| title_fullStr | Compact <italic>Ku</italic>-Band Orthomode Transducer Using Plus-Shaped Waveguide |
| title_full_unstemmed | Compact <italic>Ku</italic>-Band Orthomode Transducer Using Plus-Shaped Waveguide |
| title_short | Compact <italic>Ku</italic>-Band Orthomode Transducer Using Plus-Shaped Waveguide |
| title_sort | compact italic ku italic band orthomode transducer using plus shaped waveguide |
| topic | Orthomode transducer polarization spurious resonance waveguide |
| url | https://ieeexplore.ieee.org/document/10855630/ |
| work_keys_str_mv | AT jongminlee compactitalickuitalicbandorthomodetransducerusingplusshapedwaveguide AT sungminnoh compactitalickuitalicbandorthomodetransducerusingplusshapedwaveguide AT sangpillee compactitalickuitalicbandorthomodetransducerusingplusshapedwaveguide AT jinhojeong compactitalickuitalicbandorthomodetransducerusingplusshapedwaveguide |