| 摘要 |
<p>PROBLEM TO BE SOLVED: To remove the influence of amplitude/phase change caused by the temperature change of an outdoor reference signal lead-in section and a transmitting reference signal lead-out section in a radio section calibrator. SOLUTION: This calibrator is equipped with a temperature sensor 1, a temperature deviation compensating controller 2, a control temperature compensator 4 on reception side, a control temperature controller 3 on transmission side, a transmitting subtraction temperature compensator 5, and a receiving subtraction temperature compensator 6, as against conventional constitution, and this performs the temperature compensation to the quantity of attenuation of first and second variable attenuators 10 and 13, the control temperature compensation in each amplitude.phase controllers 18 and 19 on reception side and transmission side, and the temperature compensation to the amplitude and phase of an input reference signal or an output signal for a subtraction offset to the first and second subtracters 22 and 23.</p> |
