Inductance Calculations of Variable Pitch Helical Inductors
Abstract
A technique has been developed to calculate the inductance of variable pitch helicoil inductors of rectangular cross section that use a coaxial return feed along the center of the coil. The calculations discretize the coil into a series of rings of current that take into account the diffusion of current or skin depth. The inductance is a combination of each ring???s self-inductance and the mutual inductances of all the current rings. To validate the technique, a series of coils were machined from aluminum tubes and then their inductances were measured at 3 different frequencies. The calculated inductances are compared to the measured inductances.
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 01, 2015
- Accession Number
- ADA625194
Entities
People
- Paul R. Berning
- Peter T. Bartkowski
Organizations
- United States Army Research Laboratory