| Summary: | In the fifth-generation (5G) mobile system, extensive of new technologies are required such as millimetre wave, massive MIMO technology, small cell size of multibeam base station antenna and advanced multiple access. For 5G multibeam base station application, a dielectric lens antenna is a potential candidate due to more versatile with a simple structure, excellent multibeam shapes, very low network losses and good scanning performance. In this paper, a hollow cylindrical structure composed of a dielectric lens antenna is proposed for practical installation on the base station pole. The lens shaping program was developed by the ray-tracing method and implemented in MATLAB software which helps in designing and optimizing the shape of the dielectric lens. To assess the multibeam radiation characteristics on the cylindrical lens antenna, a full wave analysis is conducted using the FEKO electromagnetic simulator. Experimental measurements are performed on the cylindrical lens antenna at an operating frequency of 28 GHz. The measurements aim to validate the antenna performance in generating multibeam radiation patterns. As a result, the cylindrical lens antenna achieves good multibeam radiation patterns within a scanning angle from 0° to 55°. Good agreement between measured and simulated results with a gain difference of about 1.97 dBi. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2024.
|
|---|