研究目的
Investigating the development of a mechanical beam steering circular patch antenna for 5G indoor cellular access networks with sub-6 GHz operation.
研究成果
The proposed mechanical beam steering circular patch antenna demonstrates the capability to steer its main beam over 360o in the azimuth plane and from -30o to 30o in the elevation plane with a gain up to 8.01 dBi at 4.6 GHz. It offers a viable solution for future wireless networks with significant cost reduction compared to phased antenna arrays.
研究不足
The antenna input impedance is slightly influenced by the reconfiguration mechanism, requiring a definition of a common bandwidth that satisfies all beam steering configurations. The bandwidth varies from 2.79 to 3.03%, depending on the plane that demands beam steering.
1：Experimental Design and Method Selection:
The antenna design involves a circular patch radiator surrounded by 18 screws acting as a dynamic reflector to achieve beam steering. The design was optimized using ANSYS HFSS.
2：Sample Selection and Data Sources:
The antenna prototype was printed on an Arlon DiClad 880 substrate with specific dimensions and dielectric properties.
3：List of Experimental Equipment and Materials:
Arlon DiClad 880 substrate, screws for mechanical reconfiguration, coaxial cable for feeding.
4：Experimental Procedures and Operational Workflow:
The beam steering was achieved by adjusting the position and height of the screws around the circular patch. Two scenarios were analyzed for beam steering in azimuth and elevation planes.
5：Data Analysis Methods:
The antenna's performance was evaluated based on reflection coefficient (S11), bandwidth, gain, and radiation pattern using numerical simulations.
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