Kalpana Singh - Academia.edu (original) (raw)
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Papers by Kalpana Singh
Progress in Electromagnetics Research-pier, 2004
The analysis was developed for a coaxial waveguide for two configurations -one in which the centr... more The analysis was developed for a coaxial waveguide for two configurations -one in which the central conductor is corrugated in axial slot-wedges, with ridge-wedges between them, and the other in which the outer conductor is provided with radial metal vane-wedges. Azimuthal harmonics were considered in the structure regions, the effects of which were ignored in earlier published analyses based on the surface impedance model to replace the interface between the two structure regions by a homogeneous reactive surface. For both the structure configurations, one and the same form of the dispersion relation with proper interpretation of the symbol for the radius of the ridge/vane was obtained. The dispersion relation obtained by the present analysis was validated against that obtained by other analytical methods reported in the literature.
IEEE Transactions on Plasma Science, 2005
The analysis of a coaxial waveguide resonator with its central conductor corrugated with wedge-sh... more The analysis of a coaxial waveguide resonator with its central conductor corrugated with wedge-shaped slots, considering space harmonic effects due to slot periodicity, was used to study the problem of mode competition in a gyrotron. A more positive slope of the plot of the eigenvalue versus the ratio of the waveguide wall to outer slot radii (coaxial parameter) for the
Progress in Electromagnetics Research-pier, 2004
The analysis was developed for a coaxial waveguide for two configurations -one in which the centr... more The analysis was developed for a coaxial waveguide for two configurations -one in which the central conductor is corrugated in axial slot-wedges, with ridge-wedges between them, and the other in which the outer conductor is provided with radial metal vane-wedges. Azimuthal harmonics were considered in the structure regions, the effects of which were ignored in earlier published analyses based on the surface impedance model to replace the interface between the two structure regions by a homogeneous reactive surface. For both the structure configurations, one and the same form of the dispersion relation with proper interpretation of the symbol for the radius of the ridge/vane was obtained. The dispersion relation obtained by the present analysis was validated against that obtained by other analytical methods reported in the literature.
IEEE Transactions on Plasma Science, 2005
The analysis of a coaxial waveguide resonator with its central conductor corrugated with wedge-sh... more The analysis of a coaxial waveguide resonator with its central conductor corrugated with wedge-shaped slots, considering space harmonic effects due to slot periodicity, was used to study the problem of mode competition in a gyrotron. A more positive slope of the plot of the eigenvalue versus the ratio of the waveguide wall to outer slot radii (coaxial parameter) for the