SINUSOIDAL RESPONSE OF COAXIAL CURRENT SHUNTS.

Abstract

The coaxial shunt has been used to measure heavy surge current and continuous complex current for many years. However, shunt design has in general been inconsistent and unpredictable. For the design of an accurate coaxial current shunt, bandwidth and current carrying capability are the essential criteria to be established. This paper extends the previous work of J. H. Park, and others, by showing how the sinusoidal response of an uncompensated coaxial shunt can be more accurately predicted and verified in practice. A rigorous analysis is conducted on a coaxial shunt with axial potential connections in its uncompensated form. The analysis is free from any constraints of thin tubes (up to an overall limit on physical dimensions set in the text) and contains no unjustified mathematical simplifications which would otherwise detract from the accuracy of the final results. Skin-effect performance is evaluated. Computer predictions of coaxial shunt design are included to show the use of the method in the design of shunts having bandwidths of between 0 Hz and up to 5 MHz.