Abstract

Reflector backed dipole antenna (RBD) is a typical configuration used for mobile base station antennas because the antenna has broadband characteristics and it is easy to form dual-polarized sector radiation pattern. Recent mobile communication systems are working in multiple frequency bands from 700 MHz to 2 GHz bands, thus multi-band operation is required for the base station antenna. Several types of multi-band antennas have been developed and installed in commercial systems so far. Recently, 3.5 GHz band has much attention as a new mobile communication frequency band.

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