Like many of the elements of an electronic system, the wires that carry signals and/or power are more than the sum of their parts. Paying attention to the attributes of the components that comprise the cable has a significant impact on the finished cable’s performance. That’s true of all cables, but nowhere is it truer than for helical wrap cable wire (Fig. 1).
In this article, we’ll look at how improving fast Fourier transform (FFT) limits in the helical wrap material translates into better voltage standing-wave ratios (VSWR). We’ll also examine how controlling mechanical properties ensures repeatable wrap-wire performance. Finally, we’ll consider how working collaboratively with a wire partner is a surer path to design success than working with a supplier of wire and cable.