Deflection modulated electron vacuum tubes

• Antragsteller: Professor Dr.-Ing. Heino Henke
• Fachliche Zuordnung: Elektronische Halbleiter, Bauelemente und Schaltungen, Integrierte Systeme, Sensorik, Theoretische Elektrotechnik
• Förderung: Förderung von 2006 bis 2010
• Projektkennung: Deutsche Forschungsgemeinschaft (DFG) - Projektnummer 26886396

The field of microwave tubes is very old and it is improbable to find new principles. On the other hand, new fabricational technologies have become available and the push to higher frequencies is ever increasing. This may open avenues to realize new devices which were not possible before. The proposal aims for investigating trajectory-modulated or deflection-modulated devices in the range of 30 - 100 GHz. It is expected, that the linearity is better than in existing devices due to reduced spacecharge effects, and that the efficiency of a depressed collector is higher in case of monoenergetic beams. In particular, planar devices should be studied which are well suited for new technologies like deep x-ray lithography (LIGA) and wire electro-discharge-machining (EDM). As an example, a planar oscillator tube should be modeled and simulated. Here a continuous beam passes through a cavity resonator and will be energy modulated. In a following dipole magnet the beam is bent by 180° and performs transverse displacement oscillations. The backward traveling beam passes the same cavity at a different transverse position with a voltage node and pumps energy into the cavity. The field in the cavity builds up from noise until it reaches saturation.

• DFG-Verfahren: Sachbeihilfen