New structure for a slow-wave Rogowski coil

The author proposes the construction of a slow-wave Rogowski coil wound by using a novel type of three-layered wire that is formed by placing a flexible dielectric strip between two conducting strips. This structure results in a distributed capacitance along the wire. The construction of a slow-wave Rogowski coil can then be easily achieved by directly winding this kind of wire on a toroid with either rectangular or circular cross sections. The construction is then as simple as that for a conventional self-integrating Rogowski coil. Design and experimental results are presented