| Presentation | 2014-02-21 Ipplication of Small satellite: High speed downlink communication system : High efficiency GaN-HEMT power amplifier Hiromi WATANABE, Tomoya FUKAMI, Hirobumi SAITO, Naohiko IWAKIRI, Atsushi TOMIKI, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | A high-speed downlink communication system is required to meet various applications for nano/small satellites. Therefore, it is essential to implement a transmitter with small weight and power in such satellites. Our recent research has focused on an efficient system with the compact transmitter incorporating a powerful error correction on ground station receiver. Generally, an operation at nonlinear region of RF power amplifier provides a RF power amplifier with high energy efficiency. However, an amplitude-phase modulation, which is an efficient scheme in term of frequency band, requires high linearity. GaN-HEMT SSPA, which has high efficiency and linearity, and Digital-pre-distortion can provide better answer. Also, I'm developing a new measurement method to evaluate Pas and transmitter systems. We will demonstrate a high-speed down link communication system in "Hodoyoshi-4" satellite. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Small satellite / Downlink / GAN-HEMT SSPA |
| Paper # | SANE2013-137 |
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| Conference Information | |
| Committee | SANE |
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| Conference Date | 2014/2/13(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Vice Chair | |
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| Paper Information | |
| Registration To | Space, Aeronautical and Navigational Electronics (SANE) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Ipplication of Small satellite: High speed downlink communication system : High efficiency GaN-HEMT power amplifier |
| Sub Title (in English) | |
| Keyword(1) | Small satellite |
| Keyword(2) | Downlink |
| Keyword(3) | GAN-HEMT SSPA |
| 1st Author's Name | Hiromi WATANABE |
| 1st Author's Affiliation | School of Engineering,, The University of Tokyo() |
| 2nd Author's Name | Tomoya FUKAMI |
| 2nd Author's Affiliation | School of Engineering,, The University of Tokyo |
| 3rd Author's Name | Hirobumi SAITO |
| 3rd Author's Affiliation | JAXA |
| 4th Author's Name | Naohiko IWAKIRI |
| 4th Author's Affiliation | School of Engineering,, The University of Tokyo |
| 5th Author's Name | Atsushi TOMIKI |
| 5th Author's Affiliation | JAXA |
| Date | 2014-02-21 |
| Paper # | SANE2013-137 |
| Volume (vol) | vol.113 |
| Number (no) | 435 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |