Guest Column | May 17, 2011

Guest Column: Calibration Techniques Help Ensure Accurate VNA Measurements

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By Bob Buxton, Anritsu Company

In this installment, we focus on a critical element in making accurate S-parameter measurements with a VNA — calibration. While the VNA is a highly linear receiver that has sufficient spectral purity in its sources to make accurate measurements, imperfections exist that limit measurements done without calibrations.