Method for confirming electromagnetic delay of network analyser and measuring high frequency circuit impedance
A network analyzer, high-frequency circuit technology, applied in the direction of measuring resistance/reactance/impedance, measuring electrical variables, measuring devices, etc.
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[0073] The inventors of the present invention have found that the inaccurate testing impedance method of the prior art is mainly due to the fact that the method of the prior art measures the phase deviation caused by the probe by opening or short-circuiting the input end of the probe, so that Electromagnetic delay is used to compensate the phase deviation caused by the probe; however, there may be other factors besides the probe that may cause measurement deviation. When performing electromagnetic delay compensation calibration on the probe, there are two methods, one is after the probe is calibrated , to be welded into the circuit under test, and the other is to solder the ground end of the probe to the ground of the circuit under test, and calibrate the input end in the air or ground; the first method is used for calibration, and the maximum error is "the probe's The grounding point is not consistent with the grounding point of the probe during measurement", resulting in inac...
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