Analysis of an azimuthally periodic vane-loaded cylindrical waveguide for a gyro-travelling-wave tube

Te and Tm Modes of a Vane-Loaded Circular Cylindrical Waveguide for Gyro-TWT Applications

“…The earliest work on the modal analysis of a vane-loaded circular cylindrical waveguide appears to be by Singh et al [1] in 1999. A method of controlling the gain-frequency response by the beam and the magnetic-field parameters was proposed in [2] by the same authors based on the results of [1]. A two-stage vane-loading of gyro-TWT for high gains and bandwidths was proposed by Agarwal et al in [3] based again on the results of [1].…”

“…A method of controlling the gain-frequency response by the beam and the magnetic-field parameters was proposed in [2] by the same authors based on the results of [1]. A two-stage vane-loading of gyro-TWT for high gains and bandwidths was proposed by Agarwal et al in [3] based again on the results of [1]. The dispersion relations 'derived' in [1] were modified by the same authors for tapered vanes in [4].…”

“…A two-stage vane-loading of gyro-TWT for high gains and bandwidths was proposed by Agarwal et al in [3] based again on the results of [1]. The dispersion relations 'derived' in [1] were modified by the same authors for tapered vanes in [4]. In a paper [5] published in 2002, Singh et al have used the dispersion relations of [1] for finding the dispersion characteristics of 'TE 01 ' and 'TE 21 ' modes for a typical set of vane-parameter values.…”

“…The dispersion relations 'derived' in [1] were modified by the same authors for tapered vanes in [4]. In a paper [5] published in 2002, Singh et al have used the dispersion relations of [1] for finding the dispersion characteristics of 'TE 01 ' and 'TE 21 ' modes for a typical set of vane-parameter values. In the papers by Singh et al [6][7][8][9][10], various methods of analyzing/improving the frequency-response characteristics of gyro-TWT amplifiers have been proposed based again on the results from [1].…”

“…In a paper [5] published in 2002, Singh et al have used the dispersion relations of [1] for finding the dispersion characteristics of 'TE 01 ' and 'TE 21 ' modes for a typical set of vane-parameter values. In the papers by Singh et al [6][7][8][9][10], various methods of analyzing/improving the frequency-response characteristics of gyro-TWT amplifiers have been proposed based again on the results from [1]. The papers [11] by Singh and Basu and [12] by Singh were devoted to analytical studies of the interaction structure of vane-loaded gyro-TWT amplifiers starting again from the cold-wave dispersion relations appearing in [1].…”