![]() Recall that the electrical length of an RF line in degrees is defined by: In general, phase is affected by the physical length of the cable assembly, the cable bend radius, and the cable assembly technique. Extends the length of time between calibrations and minimizes drift between calibrations.Provides better bit error rate (BER) which increases effective range.Improves antenna gain for better system performance and accuracy. ![]() Ensures good phase tracking with changing temperature, and lowers residual errors and uncertainties. ![]() Phase stability is desirable in test cables because it: Two methods of testing phase change versus flexure will be explored, and the preferred method used to qualify Mini-Circuits’ T40- and T50-series phase-stable cables presented and explained in detail. This article will review the basics of phase stability in RF coaxial cables and identify the factors that affect phase performance. Therefore, in choosing the right test cableįor your needs, it’s important to consider how bending affects cable phase performanceĪnd how a cable is (or isn’t) qualified for stability of phase versus Significant enough to degrade the accuracy and precision of your measurements. ![]() Depending on the cable, these changes can be Most test environments, cables undergo frequent bending during normal use, whichĬan result in changes in phase and other performance parameters. Accurate, repeatable measurements in RF test applications is the stability of
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