Importance

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Abstract

An RF parameter calibration method comprises steps: measuring an open-circuit parameter, a short-circuit parameter and a load parameter of an RF parameter circuit of a tested object; respectively substituting measured values of the open-circuit parameter, the short-circuit parameter and the load parameter into a directivity error equation, a signal source matching error equation, and a reflection path error equation to obtain a directivity error, a signal source matching error, and a reflection path error; substituting the directivity error, the signal source matching error and the reflection path error into an RF parameter equation to work out an actual value of an RF parameter; examining whether the actual value of the RF parameter is smaller than a preset dB value; if yes, undertaking calibration; if no, returning to undertake measurements once again. The present invention can replace the expensive standard calibration kit and achieve more precise parameter calibration.

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First Claim