Base station antenna is an intermediate component for transmitting and receiving signals, as a converter capable of interconverting the guided waves propagated on the line and the electromagnetic waves radiated from space. With the arrival of 5G era, the traditional antenna began to be replaced by high-end, high-tech base station antenna, more and more new technologies will be applied to the base station antenna. The future 5G base station will continue to increase, 5G base station antenna single value synchronization enhancement, will boost 5G base station antenna investment scale, promote the development of the whole base station antenna.
China's base station antenna development has experienced from the initial dependence on foreign imports to the current local independent production process. Simple structure, low performance base station antenna in the gradual introduction of a variety of technologies, from omnidirectional, unipolar to multi-frequency bands, multi-polar, directional transformation, today's 5G era, the domestic base station antenna manufacturers international status is further improved, huawei independent research and development, the industrial chain layout to become the global antenna market giants, China's base station antenna began to lead the global industry chain development.
The core of the current antenna technology is large-scale array antenna technology, base station antenna upgraded, active development improves the antenna design and production costs, and actively promotes the value-added base station antenna thus affecting the market size. 2016-2020 base station antenna market size CAGR of 36.72%, based on this growth rate, the base station antenna market size in 2021 reaches 41.6 billion yuan.
Base station antenna cable and PCB laser soldering application
In the field of mobile communications, the structure of the base station antenna is more complex, and its internal structure is mainly composed of sheet metal parts, die casting parts, PCB circuit boards, coaxial cables and other parts assembled or structural parts welded. Among them, the welding between the metal structural components is a more common process, the purpose of its welding is to ensure a good electrical connection, and the second is to ensure a durable mechanical connection. Therefore, there are extremely high requirements for the consistency of the amount of tin in the welded joints, the fusibility of the welded joints, the mechanical strength and other related parameters.
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In the existing technology, after the surface treatment of metal structural parts, a single welding head is usually used for point-to-point heating, and solder is added at the same time to form an alloy layer on the welding surfaces of the two metal structural parts to realize an effective connection. Due to the heating of a single welding head, the solder near the welding head is subjected to more heat and the solder far from the welding head is subjected to less heat, which results in the solder being subjected to different heat and uneven flow, resulting in poor consistency of the strength of the welded surface and reducing the stability of the connection.
