Gain Degradation of KVN 21-m Shaped Cassegrain Antenna due to Misalignment of Antenna Optics
In this paper, gain loss of KVN (Korean VLBI Network) 21-m shaped Cassegrain antenna due to misalignment of antenna optics is calculated using ray-tracing method. It enables us to estimate alignment tolerances of feed and sub-reflector positioning. According to numerical results, KVN 21-m shaped Cas...
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
The Korean Space Science Society
2006-12-01
|
| Series: | Journal of Astronomy and Space Sciences |
| Subjects: | |
| Online Access: | http://ocean.kisti.re.kr/downfile/volume/kosss/OJOOBS/2006/v23n4/OJOOBS_2006_v23n4_327.pdf |
| _version_ | 1797369773854556160 |
|---|---|
| author | Moon-Hee Chung Do-Young Byun Vladimir B. Khaikin |
| author_facet | Moon-Hee Chung Do-Young Byun Vladimir B. Khaikin |
| author_sort | Moon-Hee Chung |
| collection | DOAJ |
| description | In this paper, gain loss of KVN (Korean VLBI Network) 21-m shaped Cassegrain antenna due to misalignment of antenna optics is calculated using ray-tracing method. It enables us to estimate alignment tolerances of feed and sub-reflector positioning. According to numerical results, KVN 21-m shaped Cassegrain antenna's gain loss is more sensitive to positions of feed and sub-reflector than in case of the equivalent classical Cassegrain antenna. The result of calculation is believed to be utilized as a possible guideline when checking the performance of the antenna system. |
| first_indexed | 2024-03-08T17:51:40Z |
| format | Article |
| id | doaj.art-fee3b3f8f57d4bec9147e15ff3330875 |
| institution | Directory Open Access Journal |
| issn | 2093-5587 2093-1409 |
| language | English |
| last_indexed | 2024-03-08T17:51:40Z |
| publishDate | 2006-12-01 |
| publisher | The Korean Space Science Society |
| record_format | Article |
| series | Journal of Astronomy and Space Sciences |
| spelling | doaj.art-fee3b3f8f57d4bec9147e15ff33308752024-01-02T08:00:03ZengThe Korean Space Science SocietyJournal of Astronomy and Space Sciences2093-55872093-14092006-12-0123432733610.5140/JASS.2006.23.4.327Gain Degradation of KVN 21-m Shaped Cassegrain Antenna due to Misalignment of Antenna OpticsMoon-Hee Chung0Do-Young Byun1Vladimir B. Khaikin2Radio Astronomy Division, KASI, 61-1, Hwaam-dong, Yusong-gu, Taejon 305-348, Korea Radio Astronomy Division, KASI, 61-1, Hwaam-dong, Yusong-gu, Taejon 305-348, Korea The Special Astrophysical Observatory of RAS, 194021 St. Petersburg, RussiaIn this paper, gain loss of KVN (Korean VLBI Network) 21-m shaped Cassegrain antenna due to misalignment of antenna optics is calculated using ray-tracing method. It enables us to estimate alignment tolerances of feed and sub-reflector positioning. According to numerical results, KVN 21-m shaped Cassegrain antenna's gain loss is more sensitive to positions of feed and sub-reflector than in case of the equivalent classical Cassegrain antenna. The result of calculation is believed to be utilized as a possible guideline when checking the performance of the antenna system.http://ocean.kisti.re.kr/downfile/volume/kosss/OJOOBS/2006/v23n4/OJOOBS_2006_v23n4_327.pdfray tracingantenna opticsshaped Cassegrain antennaalignment tolerance |
| spellingShingle | Moon-Hee Chung Do-Young Byun Vladimir B. Khaikin Gain Degradation of KVN 21-m Shaped Cassegrain Antenna due to Misalignment of Antenna Optics Journal of Astronomy and Space Sciences ray tracing antenna optics shaped Cassegrain antenna alignment tolerance |
| title | Gain Degradation of KVN 21-m Shaped Cassegrain Antenna due to Misalignment of Antenna Optics |
| title_full | Gain Degradation of KVN 21-m Shaped Cassegrain Antenna due to Misalignment of Antenna Optics |
| title_fullStr | Gain Degradation of KVN 21-m Shaped Cassegrain Antenna due to Misalignment of Antenna Optics |
| title_full_unstemmed | Gain Degradation of KVN 21-m Shaped Cassegrain Antenna due to Misalignment of Antenna Optics |
| title_short | Gain Degradation of KVN 21-m Shaped Cassegrain Antenna due to Misalignment of Antenna Optics |
| title_sort | gain degradation of kvn 21 m shaped cassegrain antenna due to misalignment of antenna optics |
| topic | ray tracing antenna optics shaped Cassegrain antenna alignment tolerance |
| url | http://ocean.kisti.re.kr/downfile/volume/kosss/OJOOBS/2006/v23n4/OJOOBS_2006_v23n4_327.pdf |
| work_keys_str_mv | AT moonheechung gaindegradationofkvn21mshapedcassegrainantennaduetomisalignmentofantennaoptics AT doyoungbyun gaindegradationofkvn21mshapedcassegrainantennaduetomisalignmentofantennaoptics AT vladimirbkhaikin gaindegradationofkvn21mshapedcassegrainantennaduetomisalignmentofantennaoptics |