The Development of Q-Band HEMT Receiver for VLBI
A ultra low noise Q-band HEMT receiver for VLBI has been developed using a local oscillator with a very high phase stability. The performance of receiver was verified by comparison with receivers which were developed at the other countries. The receiver noise temperature shows 65 K in the frequency...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
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The Korean Space Science Society
2004-03-01
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| Series: | Journal of Astronomy and Space Sciences |
| Subjects: | |
| Online Access: | http://ocean.kisti.re.kr/downfile/volume/kosss/OJOOBS/2004/v21n1/OJOOBS_2004_v21n1_29.pdf |
| _version_ | 1797370095785213952 |
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| author | Do-Heung Je Seog-Tae Han Tae-Sung Kim Hyun-Joo Kim Kang-Dong Kim Moon-Hee Chung Chang-Hoon Lee Duk-Goo Roh |
| author_facet | Do-Heung Je Seog-Tae Han Tae-Sung Kim Hyun-Joo Kim Kang-Dong Kim Moon-Hee Chung Chang-Hoon Lee Duk-Goo Roh |
| author_sort | Do-Heung Je |
| collection | DOAJ |
| description | A ultra low noise Q-band HEMT receiver for VLBI has been developed using a local oscillator with a very high phase stability. The performance of receiver was verified by comparison with receivers which were developed at the other countries. The receiver noise temperature shows 65 K in the frequency ragne from 42 GHz to 44 GHz, less than 100 K from 39 GHz to 46 GHz, respectively. A receiver noise temperature at SiO major line of 43GHz which will be mainly observed by using this receiver has been optimized. |
| first_indexed | 2024-03-08T17:57:31Z |
| format | Article |
| id | doaj.art-ad08c1246956489cbad06239a46d5c95 |
| institution | Directory Open Access Journal |
| issn | 2093-5587 2093-1409 |
| language | English |
| last_indexed | 2024-03-08T17:57:31Z |
| publishDate | 2004-03-01 |
| publisher | The Korean Space Science Society |
| record_format | Article |
| series | Journal of Astronomy and Space Sciences |
| spelling | doaj.art-ad08c1246956489cbad06239a46d5c952024-01-02T04:18:13ZengThe Korean Space Science SocietyJournal of Astronomy and Space Sciences2093-55872093-14092004-03-01211293810.5140/JASS.2004.21.1.029The Development of Q-Band HEMT Receiver for VLBIDo-Heung Je0Seog-Tae Han1Tae-Sung Kim2Hyun-Joo Kim3Kang-Dong Kim4Moon-Hee Chung5Chang-Hoon Lee6Duk-Goo Roh7Division of Radio Astronomy, Korea Astronomy Observatory 36-1 Whaamdong, Yousunggu, Daejeon Korea, 305-348Division of Radio Astronomy, Korea Astronomy Observatory 36-1 Whaamdong, Yousunggu, Daejeon Korea, 305-348Division of Radio Astronomy, Korea Astronomy Observatory 36-1 Whaamdong, Yousunggu, Daejeon Korea, 305-348Division of Radio Astronomy, Korea Astronomy Observatory 36-1 Whaamdong, Yousunggu, Daejeon Korea, 305-348Division of Radio Astronomy, Korea Astronomy Observatory 36-1 Whaamdong, Yousunggu, Daejeon Korea, 305-348Division of Radio Astronomy, Korea Astronomy Observatory 36-1 Whaamdong, Yousunggu, Daejeon Korea, 305-348Division of Radio Astronomy, Korea Astronomy Observatory 36-1 Whaamdong, Yousunggu, Daejeon Korea, 305-348Division of Radio Astronomy, Korea Astronomy Observatory 36-1 Whaamdong, Yousunggu, Daejeon Korea, 305-348A ultra low noise Q-band HEMT receiver for VLBI has been developed using a local oscillator with a very high phase stability. The performance of receiver was verified by comparison with receivers which were developed at the other countries. The receiver noise temperature shows 65 K in the frequency ragne from 42 GHz to 44 GHz, less than 100 K from 39 GHz to 46 GHz, respectively. A receiver noise temperature at SiO major line of 43GHz which will be mainly observed by using this receiver has been optimized.http://ocean.kisti.re.kr/downfile/volume/kosss/OJOOBS/2004/v21n1/OJOOBS_2004_v21n1_29.pdflow noise receiverHEMTVLBI |
| spellingShingle | Do-Heung Je Seog-Tae Han Tae-Sung Kim Hyun-Joo Kim Kang-Dong Kim Moon-Hee Chung Chang-Hoon Lee Duk-Goo Roh The Development of Q-Band HEMT Receiver for VLBI Journal of Astronomy and Space Sciences low noise receiver HEMT VLBI |
| title | The Development of Q-Band HEMT Receiver for VLBI |
| title_full | The Development of Q-Band HEMT Receiver for VLBI |
| title_fullStr | The Development of Q-Band HEMT Receiver for VLBI |
| title_full_unstemmed | The Development of Q-Band HEMT Receiver for VLBI |
| title_short | The Development of Q-Band HEMT Receiver for VLBI |
| title_sort | development of q band hemt receiver for vlbi |
| topic | low noise receiver HEMT VLBI |
| url | http://ocean.kisti.re.kr/downfile/volume/kosss/OJOOBS/2004/v21n1/OJOOBS_2004_v21n1_29.pdf |
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