![]() ![]() Sheath helix waveguide mode effective pitch angleĪxial propagation factor of n = 0 sheath helix waveguide mode at the design frequency 7, 8Ĭharacteristic impedance of n = 0 sheath helix waveguide mode at the design frequency 7 Wire or tube conductor physical wire length Proximity factor interpolated from empirical Medhurst data 1, 2Įffective coil diameter according to Stroobandt (see below)Ĭorrection factors correction factor for field non-uniformity according to Lundin 1, 3Ĭorrection factor for the self-inductance of the round conductor according to Knight and Rosa 1, 4, 5Ĭorrection factor for the mutual-inductance between round conductor windings according to Knight 1, 6 Length of the coil, measured from the connecting wires centre to centre ![]() Mean diameter of the air core coil, measured from conductor centre to conductor centre (include the wire insulation thickness, if any) Input Input round wire coil with dimensions and current-sheet approximation 1 Stroobandt, ON4AA Copyright 2007–2020, licensed under Creative Commons BY-NC-SA ![]() RF Inductance Calculator for Single‑Layer Helical Round‑Wire Coils Serge Y. ![]()
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