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Articles by David Vondran

The Importance of Phase Accuracy in Differential VNA Measurements

The impact of phase errors in vector network analyzer measurements has become more significant with the increased use of balanced devices and non-50 Ω reference impedances. These significant phase errors are often traceable to calibration or de-em...
The rapidly increasing use of differential RF and microwave circuits has created many new measurement challenges. In S-parameter measurements, for example, transmission phase accuracy could often be ignored with little impact on specification-critical measurements. This is no longer true in the measurement of differential circuits, since seemingly small phase...
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