Millimeter-Wave Generation with Spiraling Electron Beams

Details

• Creators:
  Kulke, Bernhard
• Corporate Creators:
  John A. Volpe National Transportation Systems Center (U.S.)
• Corporate Contributors:
  United States. National Aeronautics and Space Administration
• Subject/TRT Terms:
  • Millimeter waves
  • Microwave detectors
  • Superhigh frequency
  • Electromagnetic wave propagation
  • Continuous radiation
  • Electronic beams
  • Electric generators
• Publication/ Report Number:
  DOT-TSC-NASA-71-7
• Resource Type:
  Tech Report
• Geographical Coverage:
  United States
• Corporate Publisher:
  John A. Volpe National Transportation Systems Center (U.S.)
• Abstract:
  An investigation has been carried out of the feasibility ; of using the interaction between a thin, solid, ; spiraling electron beam of 10-20kV energy and a microwave ; cavity to generate watts of CW millimeter-wave power. ; Experimental results are given for several prototype ; devices operating at 9.4 GHz and at 94 GHz. Power outputs ; of 5W, and electronic efficiencies near 3900 , were obtained ; at X-band, and moderate gain was obtained at 94 GHz. The ; small-signal theory gives a good fit to the X-band data, ; and the device behavior at 94 GHz is as expected from the ; given beam characteristics. The performance is limited ; chiefly by the velocity spread in the spiraling electron ; beam, and once this can be brought under control, highpower ; generation of millimeter waves appears quite ; feasible with this type of device.
  More +
• Format:
  PDF
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/11945/dot_11945_DS1.pdf
• File Type:
  [PDF - 3.08 MB]
• Collection(s):
  Volpe Center
• Main Document Checksum:
  urn:sha256:914db91caacb7492c40e2eba84bf486997c8a10be902433a5143ff3a80cb1cba