| 摘要 |
The present invention relates to a calibration device (100) for calibrating a system (200) that is configured to process radio frequency, RF, signals, wherein said calibration device (100) comprises a plurality of input ports (110a, 110b) and a coupling structure (130) that is configured to receive a signal (sig) at at least one of said input ports (110a, 110b) and to forward a portion (sig12) of said received signal (sig) to at least another one of said input ports (110a, 110b), wherein said portion (sig12) of said received signal (sig) comprises a predetermined delay and/or attenuation with respect to said received signal (sig). |
