Problems of development of broadband traveling wave tube of millimeter and sub millimeter ranges

 

N. A. Bushuev

"Almaz" Scientific Company
 

The paper is received on October 24, 2016

 

Abstract. The work presents an analytical review of the current state of development of broadband TWT millimeter and sub millimeter ranges, made by leading Russian enterprises and foreign companies. The main trends in the development of these devices have been identified.  Approximate analytical expressions for TWT to quickly assess changes in the parameters of cylindrical and ribbon electron beams (geometric dimensions of the transit channel, the accelerating voltage, the magnitude of the focusing of the magnetic field) when promoting them in the short-wave part of the millimeter range were found. The modern methods of manufacturing slow-wave terahertz systems (Photolithography, DRIE, LIGA- and MEMS technology were considered.

Key words:  traveling wave tube, slow wave system, magnetic focusing system, millimeter wave band, terahertz band, sheet beam.

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