| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method for high-accuracy calibration of voltage and current detected by a high-frequency measurement device, and the high-frequency measurement device capable of executing the calibration. <P>SOLUTION: A preliminary step is to use values obtained by measuring three reference loads and true values of the values to calculate both a basic calibration parameter enabling low-accuracy calibration within a wide range of impedance and a quadrant-by-quadrant calibration parameter enabling high-accuracy calibration using each of four quadrants into which a range on a Smith chart is divided. A first calibration part 382 calibrates a detected voltage and current with the basic calibration parameter. A quadrant determination part 385 determines in which quadrant the impedance calculated from the calibrated voltage and current is located. A second calibration part 386 executes further calibration with the quadrant-by-quadrant calibration parameter corresponding to a determination result input from the quadrant determination part 385. <P>COPYRIGHT: (C)2012,JPO&INPIT |
