Patent ID: 6907269
Filing Date: 2005-06-14
Classification: H01Q

Abstract:
1. A mobile communication base station equipment comprising a wide angle beam forming antenna assembly which forms a pair of wide angle beams located close to each other and directed in a common direction; a narrow angle beam forming antenna assembly for forming a plurality of narrow angle beams having directivity responses which are directed in different directions and collectively covering the wide angle beam; a communication transmitter; a beam switcher connected between the communication transmitter and the narrow angle beam antenna assembly for selectively feeding transmitting power from the communication transmitter to the plurality of narrow angle beams; a communication receiver connected to the wide angle beam forming antenna assembly and fed with a received signal from one of the pair of wide angle beams formed by the wide angle beam forming antenna assembly; a direction finder receiver connected to the wide angle beam forming antenna assembly and fed with a received signal from the other wide angle beam of the pair from the wide angle beam forming assembly; a direction measuring unit for measuring a direction on which a mobile station transmitting the received signal is located from a phase difference between the both received signals from the communication receiver and the direction finder receiver; and a beam selection control circuit connected to the direction measuring unit and the beam switcher for controlling the beam switcher by feeding an output from the transmitter to one of the plurality of narrow angle beams in accordance with the measured direction.