| Presentation | 2004/10/15 Engineering Verification of the RF Active Equipment for the COMS (Communication, Ocean and Meteorological Satellite) Ka band Communications Transponder(Advanced Technology)(Joint Conference on Satellite Communications 2004(JC-SAT 2004)) In bok Yom, Dong pil Jang, Jong heung Park, Seung Hyeup Oh, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | This paper describes the engineering verification of the active RF equipment that consists of the Ka band satellite transponder for the COMS (Communication, Ocean and Meteorological Satellite). The COMS communications transponder receives 30 GHz signals and down-converts to 3 GHz for beam switching and then up-converts to 20 GHz for transmitting to ground. Therefore a 30 GHz LNA, 30/3 GHz Downconverter, 3GHz Switch matrix 3/20 GHz Upconverter and Channel amplifier have been developed for the performance verification. These are designed by using MMIC technology to reduce size and mass, and to secure high stable performances. The LNA shows 2.0 dB noise figure with the compact size of 50 mm × 35 mm × 20 mm. The Downconverter triplicates the 8 GHz from DRVCO type LO for downconverting 30 GHz signal to 3 GHz and the Upconverter doubles the 8 GHz signals for upconverting 3 GHz signals to 20 GHz. Each frequency converter has a redundant chain in one housing. The Switch matrix has 4×4 arrays composed by pin-diode switches and power combiners/dividers. The Channel amplifier has a 32 dB commandable gain control range and 20 dB automatic level control range to use transponders at optimum operating condition. In addition to engineering verification of the RF active equipment, Thermal/Mechanical analysis and the other environmental analysis shall be performed to secure successful development of the flight model equipment. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | COMS / Satellite transponder / RF active equipment / Amplifier |
| Paper # | SAT2004-149 |
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| Conference Information | |
| Committee | SAT |
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| Conference Date | 2004/10/15(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
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| Paper Information | |
| Registration To | Satellite Telecommunications (SAT) |
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| Language | ENG |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Engineering Verification of the RF Active Equipment for the COMS (Communication, Ocean and Meteorological Satellite) Ka band Communications Transponder(Advanced Technology)(Joint Conference on Satellite Communications 2004(JC-SAT 2004)) |
| Sub Title (in English) | |
| Keyword(1) | COMS |
| Keyword(2) | Satellite transponder |
| Keyword(3) | RF active equipment |
| Keyword(4) | Amplifier |
| 1st Author's Name | In bok Yom |
| 1st Author's Affiliation | Electronics and Telecommunications Research Institute() |
| 2nd Author's Name | Dong pil Jang |
| 2nd Author's Affiliation | Electronics and Telecommunications Research Institute |
| 3rd Author's Name | Jong heung Park |
| 3rd Author's Affiliation | Electronics and Telecommunications Research Institute |
| 4th Author's Name | Seung Hyeup Oh |
| 4th Author's Affiliation | Chungnam National University |
| Date | 2004/10/15 |
| Paper # | SAT2004-149 |
| Volume (vol) | vol.104 |
| Number (no) | 352 |
| Page | pp.pp.- |
| #Pages | 8 |
| Date of Issue | |