Interaction Impedance of an Inhomogeneously Loaded Helical Slow-Wave Structure of a TWT

V.N. SinghCentre of Research in Microwave Tubes, Department of Electronics Engineering, Institute of Technology, Banaras Hindu University, Varanasi221 005.

Ved P. SinghCentre of Research in Microwave Tubes, Department of Electronics Engineering, Institute of Technology, Banaras Hindu University, Varanasi221 005.

B.N. BasuCentre of Research in Microwave Tubes, Department of Electronics Engineering, Institute of Technology, Banaras Hindu University, Varanasi221 005.

R.K. JhaCentre of Research in Microwave Tubes, Department of Electronics Engineering, Institute of Technology, Banaras Hindu University, Varanasi221 005.

Abstract

The simple Pierce's theory for the interaction impedance of a helix in free-space is extended to the case of an inhomogeneously loaded helical structure of a TWT in order to estimate the quality of the latter from the “gain-frequency” consideration. The characteristic impedance, the impedance parameter and the gain-frequency response of the structure are compared with those of a homogeneously loaded helical structure.

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Interaction Impedance of an Inhomogeneously Loaded Helical Slow-Wave Structure of a TWT

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Interaction Impedance of an Inhomogeneously Loaded Helical Slow-Wave Structure of a TWT

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