排序方式: 共有14条查询结果,搜索用时 15 毫秒
11.
Miroslav Plavec R. Hoekstra C. De Jager Ji⋖´ Grygar J. Otterman H. M. van den Dool O. Namba C. J. Th. Gunsing Jean-Claude Pecker K. K. Kwee L. Perek D. Callebaut Jan Kuijpers W. de Graaff G. C. M. Reijnen B. Swanenburg N. Grevesse J. Kleczek P. P≙quet A. D. Fokker H. G. van Bueren D. Edgar Page R. J. van Duinen Franco Pacini 《Space Science Reviews》1978,21(4):469-483
12.
D. E. Page M. Pick L. Kresák G. C. M. Reijnen A. G. W. Cameron Cornelius J. E. Schuurmans Mikhail Ya Marov B. Goldberg T. R. Kaiser J. Lemaire L. Sehnal H. Elsässer B. Valniček W. de Graaff Franco Pacini K. Rohlfs A. C. De Landtsheer I. D. Zhongolovich C. de Jager A. Greve J. Ruprecht R. J. Tayler G. Kockarts W. I. Axford H. Tabor H. J. Bolle E. Kaldis Gijsbertha C. M. Reijnen C. de Loore J. Kleczek C. A. Murray Åke Wallenquist 《Space Science Reviews》1981,28(1):105-118
13.
14.
The technology of gallium arsenide field-effect transistors has advanced to the point where these devices can serve to replace traveling wave tubes in spaceborne communication transponders.This paper describes interim results of a C-band FET amplifier which is currently being developed by RCA for INTELSAT. The FETA is designed to provide a 6-W output with an efficiency greater than 25%, and a backed-off 1.5-W output level with low distortion and efficiency of 13%.The third order intermodulation () of a FETA at saturation is typically 15 dB as compared to 10 dB for a TWTA. At 10 dB input power back-off the improves to 24 dB while that of a TWTA is only 16 dB.We fabricated a breadboard 5-W FETA which demonstrates that a linear operation can be achieved at an output level of 1.5 W with 10% efficiency. By contrast the efficiency of a typical 5 W TWTA in the same linear region is no greater than 3–5%. 相似文献