Linear TWT with feedforward linearizing circuit

Abstract

The travelling wave tube has great potential to provide high power for wireless communication. However, its poor linearity has limited its application. This paper describes a feedforward linear technology for improving a TWT linearity where a dual loop is implemented in order to reduce IMD components of the TWT. A low gain, X-band helix-TWT is designed by the use of the Pierce theory and nonlinear numerical simulations codes.