CALIBRATION DEVICE FOR ARRAY ANTENNA WIRELESS RECEIVER

摘要

PURPOSE: A calibration system is provided for the array antenna radio communication apparatus capable of accurately detecting the delay characteristic and amplitude characteristic at the radio reception units. CONSTITUTION: An array antenna containing a plurality of antenna elements and a plurality of radio reception units is provided for the antenna elements. A calibration signal with substantially the same frequency band as a spread signal used for spread spectrum communications is passed through the radio reception units and the delay characteristic or amplitude characteristic of radio reception units is detected from the calibration signal that has passed the radio reception units.