| Presentation | 1999/7/23 A novel C/I improvement technique for an HPA array using intermodulation distortion controllers Takana Kaho, Hiroshi Okazaki, Kohji Horikawa, Katsuhiko Araki, Takashi Ohira, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | The transponders for future communications satellite must have high output power with high efficiency and low intermodulation distortion. The new technique was proposed to improve the Carrier to Interference ratio (C/I) in an active-phased-array-antenna system that uses even-order-distortion implemented intermodulation distortion controllers (EODIC). The technique combine the intermodulation distortions of each array element in such a way that they are canceled or distributed away from the main-lobe direction. This paper examine the third-order intermodulation distortion (IM3) reduction performance of a single high-power-amplifier (HPA) with EODIC. The applicability of this technique is evaluated using the measured performance of the EODIC in an HPA to an active-phased-array-antenna system in a simulations of the radiation patterns of the carrier and the IM3. The calculated results show that the C/IM3 in the main-lobe direction is greatly improved by this technique. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | High-power amplifier / Linearizer / Active-phased-array antenna / MMIC |
| Paper # | SAT99-65 |
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| Conference Information | |
| Committee | SAT |
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| Conference Date | 1999/7/23(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Satellite Telecommunications (SAT) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | A novel C/I improvement technique for an HPA array using intermodulation distortion controllers |
| Sub Title (in English) | |
| Keyword(1) | High-power amplifier |
| Keyword(2) | Linearizer |
| Keyword(3) | Active-phased-array antenna |
| Keyword(4) | MMIC |
| 1st Author's Name | Takana Kaho |
| 1st Author's Affiliation | NTT Network Innovation Laboratories Wireless Systems Laboratory() |
| 2nd Author's Name | Hiroshi Okazaki |
| 2nd Author's Affiliation | NTT Network Innovation Laboratories Wireless Systems Laboratory |
| 3rd Author's Name | Kohji Horikawa |
| 3rd Author's Affiliation | NTT Network Innovation Laboratories Wireless Systems Laboratory |
| 4th Author's Name | Katsuhiko Araki |
| 4th Author's Affiliation | NTT Network Innovation Laboratories Wireless Systems Laboratory |
| 5th Author's Name | Takashi Ohira |
| 5th Author's Affiliation | ATR Adaptive Communications Research Labs |
| Date | 1999/7/23 |
| Paper # | SAT99-65 |
| Volume (vol) | vol.99 |
| Number (no) | 213 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |