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L- and C-Frequency Space Traveling-Wave Tube Amplifiers Developed by IECAS with the Successful Launch of the Big Dipper Navigation Satellite
Update time: 2015-04-10
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    At 21:52 pm on 30 March, 2015, the first new Big Dipper Navigation Satellite (BDNS), developed by the Shanghai Engineering Center for Microsatellites (SECM), CAS, was launched from the Xichang Satellite Launch Center, and successfully entered a preset orbit. 

  As the core components of satellite, L- and C-Frequency Space Traveling-Wave Tube Amplifiers, developed by the Institute of Electronics, Chinese Academy of Sciences (IECAS), operated in orbit after the successful launch of BDNS, and led to two breakthroughs: 

  The first breakthrough is that this is the first time that BDNSs have used domestic traveling-wave tube amplifiers as key components. The traveling-wave tube amplifiers, one of the key components of satellites, were previously always imported. The new generation of BDNSs adopted a total of six traveling-wave tube amplifiers, which were independently developed by IECAS. This application not only further lays a leading position for IECAS in the industry, but also opens up a new chapter for the domestic independence and development of such enterprises in China.  

  The second breakthrough is that this is the first in-orbit application of domestic L- and C-Frequency Traveling-Wave Tube Amplifiers. Therefore, the L-Ka Frequency Amplifiers developed by IECAS have successfully transited in orbit, achieving the fixed target (namely the in-orbit application of full frequency amplifiers in 2015), and taking solid steps for the complete replacement of import by 2020.  

  The new generation of BDNS, as the first large platform satellite launched by CAS, has historical significance and has obtained great attention from CAS. In order to achieve the independence and control for these traveling-wave tube amplifiers, IECAS Office No. 3, the Technology Department and the Quality Department have together solved many technical problems, accomplished development tasks, and delivered six qualified amplifiers on time in two years' efforts when faced with urgent deadlines, heavy task loads, and countless difficulties. 

   IECAS did not waste these painstaking efforts, instead creating a milestone on the path of exploring science. In the new generation of Big Dipper navigation testing satellites, IECAS has delivered a total of 28 traveling-wave tube amplifiers, accounting for 90% of the total number. In the following network stars, there may be more in-orbit applications of traveling-wave tube amplifiers developed by IECAS, so as to completely replace import. 

  Before the launch of BDNS, a portion of the representatives who participated in the development of the projects performed by IECAS and Beijing Science, Electronics and Aerospace Space Technology Co., Ltd. were invited to take part in the launch and its guarantee at the Xichang Satellite Launch Center, and fulfilled this task. (Technology Department, Chen Zhenhai)  





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