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Radiation patterns of present mobile base station antennas are designed to be low sidelobe characteristics. To achieve this radiation pattern, linear array feeds are employed. For simplicity of antenna configuration, authors considered to replace antenna radome by a lens antenna. The array feed also replaced by a single feed. However, it is considered that lens thickness will be main problem. This...
In mobile base station antennas, linear array antennas are employing and asymmetrical radiation patterns are achieved. For multi frequency use, unequally spaced array configurations are preferable because of reducing grating lobes in higher frequency operations. Previously, radiation pattern synthesis methods were developed for equally spaced array configurations. In radiation pattern synthesis method,...
In the conventional base station antenna, a linear array antenna is used. For suppressing the interference between neighbouring cells, the main beam is down-tilted to the cell edges of own radio zones [1]. Recently, the multi-frequency base station antenna is used due to a limited space in the base station [2]. The beam tilt angle is usually designed by conventional phase shifters. For example, in...
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