Improving Calibration Accuracy and Speed with Characterized Calibration Standards

S parameter error correction is the fundamental building block of the RF & microwave device characterization world. The accuracy of several advanced measurements depend on the accuracy of S parameter characterization. Therefore it has been one of the most extensively researched topics since the introduction of network analyzers. Error correction techniques can be accomplished using several calibration methods. The most commonly known methods are SOLT and TRL calibrations. The advantages and disadvantages of these methods have been covered in many documents since the 80's that explain the calibration theory. While it may have been generally accepted all along, the need for faster and accurate calibrations have always been driven by operational efficiency requirements within organizations. Hence the advent of Electronic calibration modules. This application note explains the lesser known characterized SOLT calibration which drives the means to meet the objective of faster, accurate and wide-band calibrations.