| 摘要 |
Proposed is a method of calculating the Voltage Standing Wave Ratio (VSWR) of a radio frequency transmission line (16) which is operatively coupled with a first (22) and a second directional coupler (24), the first directional coupler (22) developing a first voltage indicative of the forward power propagating along the radio frequency transmission line (16) in a first direction, the second directional coupler (24) developing a second voltage indicative of a reflected power propagating along the radio frequency transmission line (16) in a reverse direction. The method is characterized by the steps of, in a second stage of installation, collecting values of the first and the second voltage, combining at least one correction value with the second voltage to form a corrected second voltage, and forming the Voltage Standing Wave Ratio on the basis of the first voltage and the corrected second voltage. The correction value may be obtained in a calibration process in a first stage of installation. Further, a base station in a mobile communication system implementing this method is disclosed. <IMAGE>
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