A Broadband W-band Orthomode Transducer for KVN Polarization Observations
A W-band Orthomode Transducer (OMT) has been developed for Korean VLBI Network (KVN) polarization observation. The OMT design was based on E-plane split-block technique using septum structure. 3-dimensional electromagnetic simulation was fully employed to optimize the performance of the OMT. Measu...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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The Korean Space Science Society
2013-12-01
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| Series: | Journal of Astronomy and Space Sciences |
| Subjects: | |
| Online Access: | http://ocean.kisti.re.kr/downfile/volume/kosss/OJOOBS/2013/v30n4/OJOOBS_2013_v30n4_345.pdf |
| _version_ | 1797370419368427520 |
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| author | Moon-Hee Chung Do-Heung Je Seung-Rae Kim |
| author_facet | Moon-Hee Chung Do-Heung Je Seung-Rae Kim |
| author_sort | Moon-Hee Chung |
| collection | DOAJ |
| description | A W-band Orthomode Transducer (OMT) has been developed for Korean VLBI Network (KVN) polarization observation. The
OMT design was based on E-plane split-block technique using septum structure. 3-dimensional electromagnetic simulation
was fully employed to optimize the performance of the OMT. Measurements of the fabricated OMT show that the return losses
for the vertically and horizontally polarized modes are better than -20 dB across 80 ~ 108 GHz and the insertion losses for the
both modes are less than 0.47 dB. The cross-polarization level of the OMT is less than -30 dB. The bandwidth of the developed
OMT is estimated as around 30%. |
| first_indexed | 2024-03-08T18:02:19Z |
| format | Article |
| id | doaj.art-4bc70d8dbeab426b900ac2c3882e3b5e |
| institution | Directory Open Access Journal |
| issn | 2093-5587 2093-1409 |
| language | English |
| last_indexed | 2024-03-08T18:02:19Z |
| publishDate | 2013-12-01 |
| publisher | The Korean Space Science Society |
| record_format | Article |
| series | Journal of Astronomy and Space Sciences |
| spelling | doaj.art-4bc70d8dbeab426b900ac2c3882e3b5e2024-01-02T00:53:59ZengThe Korean Space Science SocietyJournal of Astronomy and Space Sciences2093-55872093-14092013-12-0130434535310.5140/JASS.2013.30.4.345A Broadband W-band Orthomode Transducer for KVN Polarization ObservationsMoon-Hee Chung0Do-Heung Je1Seung-Rae Kim2Korea Astronomy & Space Science Institute, Daejon 305-348, KoreaKorea Astronomy & Space Science Institute, Daejon 305-348, KoreaKorea Astronomy & Space Science Institute, Daejon 305-348, KoreaA W-band Orthomode Transducer (OMT) has been developed for Korean VLBI Network (KVN) polarization observation. The OMT design was based on E-plane split-block technique using septum structure. 3-dimensional electromagnetic simulation was fully employed to optimize the performance of the OMT. Measurements of the fabricated OMT show that the return losses for the vertically and horizontally polarized modes are better than -20 dB across 80 ~ 108 GHz and the insertion losses for the both modes are less than 0.47 dB. The cross-polarization level of the OMT is less than -30 dB. The bandwidth of the developed OMT is estimated as around 30%.http://ocean.kisti.re.kr/downfile/volume/kosss/OJOOBS/2013/v30n4/OJOOBS_2013_v30n4_345.pdfdual-circular polarizationorthomode transducermillimeter waveguide circuitsradio astronomy receiver system |
| spellingShingle | Moon-Hee Chung Do-Heung Je Seung-Rae Kim A Broadband W-band Orthomode Transducer for KVN Polarization Observations Journal of Astronomy and Space Sciences dual-circular polarization orthomode transducer millimeter waveguide circuits radio astronomy receiver system |
| title | A Broadband W-band Orthomode Transducer for KVN Polarization Observations |
| title_full | A Broadband W-band Orthomode Transducer for KVN Polarization Observations |
| title_fullStr | A Broadband W-band Orthomode Transducer for KVN Polarization Observations |
| title_full_unstemmed | A Broadband W-band Orthomode Transducer for KVN Polarization Observations |
| title_short | A Broadband W-band Orthomode Transducer for KVN Polarization Observations |
| title_sort | broadband w band orthomode transducer for kvn polarization observations |
| topic | dual-circular polarization orthomode transducer millimeter waveguide circuits radio astronomy receiver system |
| url | http://ocean.kisti.re.kr/downfile/volume/kosss/OJOOBS/2013/v30n4/OJOOBS_2013_v30n4_345.pdf |
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