ALL-IN-ONE ANTENNA FOR OPERATING MULTI FREQUENCY BANDS

摘要

PURPOSE: A multiband integrated antenna device is provided to enhance effectiveness of telecommunication infrastructure operation by adding a frequency reconfiguration circuit which selectively offers frequency. CONSTITUTION: A first antenna device comprises a first feeder(104) and a first feeding point(103). The first antenna device is driven in a first frequency band. A second antenna device comprises a second feeder(204) and a second feeding point(203). The second antenna device is driven in a second frequency band. A second radiation device is located within a similarity cavity formed in the center area of a first radiation device. A third radiation device is located at the upper side of the first radiation device.