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- W3144906215 abstract "The RF performance of a new K-Band helix conduction cooled traveling-wave tube amplifier (TWTA), is presented in this paper. A total of three such units were manufactured, tested and delivered. The first unit is currently flying onboard NASA's Lunar Reconnaissance Orbiter (LRO) spacecraft and has flawlessly completed over 2000 orbits around the Moon. The second unit is a proto-flight model. The third unit will fly onboard NASA's International Space Station (ISS) as a very compact and light weight transmitter package for the Communications, Navigation and Networking Reconfigurable Testbed (CoNNeCT), which is scheduled for launch in 2012. These TWTAs were characterized over the frequencies 25.5 to 25.8 GHz. the saturated RF output power is 40 W and the saturated RF gain is 46dB. The saturated AM-to-PM conversion is 3.5 deg/dB and the small signal gain ripple is 0.46 dB peak-to-peak. The overall efficiency of the TWTA, including that of the electronic power conditioner is as high as 45%." @default.
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- W3144906215 date "2010-05-01" @default.
- W3144906215 modified "2023-10-14" @default.
- W3144906215 title "High-efficiency K-band space traveling-wave tube amplifier for near-earth high data rate communications" @default.
- W3144906215 doi "https://doi.org/10.1109/mwsym.2010.5516163" @default.
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