ANTENNA DEVICE AND METHOD FOR DETERMINING RADIATION PATTERN

An antenna device includes antennas to receive and transmit signals; and a processor to divide radiation patterns of combinations of the antennas into a predetermined number of characteristic patterns, and to calculate similarities of the characteristic patterns and a RSSI of each of the characteristic patterns. When the antenna device is in operation, the processor reads and analyzes RSSI of the signals received by the antennas, compares the RSSI of the signals of the antennas with the RSSI of the characteristic patterns, and determines a matched characteristic pattern group according to results of comparisons and the similarities of the characteristic patterns.