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Home > Reference > Research and information: general > Research methods: general > Efficiency Enhancement of Dual-Mode Traveling Wave Tubes at Saturation and in the Linear Range by Use of Spent-Beam Refocusing and Multistage Depressed Collectors
Efficiency Enhancement of Dual-Mode Traveling Wave Tubes at Saturation and in the Linear Range by Use of Spent-Beam Refocusing and Multistage Depressed Collectors

Efficiency Enhancement of Dual-Mode Traveling Wave Tubes at Saturation and in the Linear Range by Use of Spent-Beam Refocusing and Multistage Depressed Collectors


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About the Book

An axisymmetric, multistage depressed collector of fixed geometric design was evaluated in conjunction with an octave-bandwidth, dual-mode TWT. The TWT was operated over a wide range of conditions to simulate different applications. The collector was operated in three-, four-, and five-stage configurations, and its performance was optimized (within the constraint of fixed geometric design) over the range of TWT operating conditions covered. For operation of the dual-mode TWT at and near saturation, the collectors increased the TWT overall efficiency by a factor of 2 1/2 to 3 1/2. Collector performance was relatively constant for both the high and low TWT modes and for operation of the TWT across an octave bandwidth. For operation of the TWT in the linear, low-distortion range, collector efficiencies of 90 percent and greater were obtained, leading to a five- to twelvefold increase in the TWT overall efficiency for the range of operating conditions covered and reasonably high (greater than 25 percent) overall efficiencies well below saturation. Ramins, P. and Fox, T. A. Glenn Research Center NASA-TP-1486, E-9912 RTOP 506-20


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Product Details
  • ISBN-13: 9781723368486
  • Publisher: Createspace Independent Publishing Platform
  • Publisher Imprint: Createspace Independent Publishing Platform
  • Height: 279 mm
  • No of Pages: 28
  • Spine Width: 2 mm
  • Width: 216 mm
  • ISBN-10: 1723368482
  • Publisher Date: 20 Jul 2018
  • Binding: Paperback
  • Language: English
  • Returnable: N
  • Weight: 91 gr


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Efficiency Enhancement of Dual-Mode Traveling Wave Tubes at Saturation and in the Linear Range by Use of Spent-Beam Refocusing and Multistage Depressed Collectors
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