Abstract
In this paper, a TRS band(Trunked Radio System: ) array antenna has a good front-to-back ratio characteristics for the mobile communication base station is proposed. The proposed array antenna is composed of the radiated elements which are the microstrip dipole antennas with the cavity-backed reflector. For the validity of the proposed antenna, the array antenna is designed, fabricated, and its radiation characteristics are measured. As a result of measurements, the antenna gain is over 13.3 dBi and the front-to-back ratio is over 40 dB at the useable frequency band. We confirm that the designed antenna can be used as the mobile communication base station antenna with the excellent back lobe characteristics.
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