Three-dimensional simulation of helix traveling-wave tube cold-test characteristics using MAFIA
Carol L. Kory
Abstract
Carol L. Kory
Abstract
The cold-test parameters including dispersion, impedance, and attenuation have been calculated for a helix traveling-wave tube (TWT) slow-wave circuit using MAFIA, the three-dimensional (3-D) electromagnetic finite-integration computer code. The helix model includes tape thickness, rectangular dielectric supports, and material properties consistent with the actual circuit. Measured cold-test data and computer-derived results for the helix circuit are presented with excellent agreement.
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The cold-test parameters including dispersion, impedance, and attenuation have been calculated for a helix traveling-wave tube (TWT) slow-wave circuit using MAFIA, the three-dimensional (3-D) electromagnetic finite-integration computer code. The helix model includes tape thickness, rectangular dielectric supports, and material properties consistent with the actual circuit. Measured cold-test data and computer-derived results for the helix circuit are presented with excellent agreement.
Key concepts: Traveling-wave tube, Helix (gastropod), Tube (container), Attenuation, Electrical impedance, Dispersion (optics), Dielectric, Acoustics