Deflection modulated electron vacuum tubes

• Applicant: Professor Dr.-Ing. Heino Henke
• Subject Area: Electronic Semiconductors, Components and Circuits, Integrated Systems, Sensor Technology, Theoretical Electrical Engineering
• Term: from 2006 to 2010
• Project identifier: Deutsche Forschungsgemeinschaft (DFG) - Project number 26886396

• Final Report Year: 2015

Final Report Abstract

With the tracking code QPT a powerful instrument is available. It is much faster than full PIC codes and allows for first approaches over wide parameter ranges and for exploiting different designs. The planar deflection-modulated klystron is a possible solution especially if frequency multiplication to very high frequencies is used. A medium power 100GHz klystron seems possible. For some applications the poor linearity at small signals may be prohibitive. The most promising device is the corkscrew hollow beam klystron. Due to the large beam cross-section it is certainly well suited for high power applications in the 3 to 12GHz region. It has also high efficiency since the beam loses energy in the output cavity in a very mono- energetic way and is therefore well suited for depressed collectors. Because of the good results we have up to now, we will try to exploit this idea further in following projects. We will also look into the very high frequency range using frequency multiplication.

Publications

• Advances in the design of planar structures for deflection modulated electron vacuum tubes. 1st ITG Intern. Vacuum Electronics Workshop 2008, Bad Honnef
  A. Grede. H. Henke, R. Wegner, B. Breitkreutz
  
• Circular output cavities for deflection modulated electron vacuum tubes. 1st ITG Intern. Vacuum Electronics Workshop 2008, Bad Honnef
  B. Breitkreutz, A. Grede, H. Henke
  
• Design study for planar output cavities for deflection modulated electron vacuum tubes. IVEC 2008, Monterey, pp. 314-315
  A. Grede. H. Henke, R. Wegner, B. Breitkreutz
  
• Concepts for circular deflection modulated tubes and frequency multiplying millimeter wave sources. IVEC 2009, Rome, pp. 552-553
  A. Grede, H. Henke
  
• QPT a simple particle tracker for tube simulation. IVEC 2011, Bangalore, pp. 73-74
  A. Grede, H. Henke
  
• Corkscrew modulated hollow-beam klystron for high power and frequency multiplying applications. IVEC 2013, Paris, pp.1-2
  A. Grede, H. Henke
  (See online at https://doi.org/10.1109/IVEC.2013.6571124)