From：Zhaoqing Xiangjiasheng Technology Co., Ltd Release time：2021-03-26
Base station antenna is developed with the development of network communication. Engineers design different antennas according to the network requirements. Therefore, in the past several generations of mobile communication technology, antenna technology has been evolving.
The first generation of mobile communication almost used omni-directional antenna. At that time, the number of users was small and the transmission rate was low. At this time, it was also an analog system.
It is the second generation of mobile communication technology that we have entered the cellular era. In this stage, the antenna gradually evolved into directional antenna, and the general lobe width includes 60 ° and 90 ° and 120 °. Take 120 ° for example, it has three sectors.
In the 1980s, monopolarized antenna was the main antenna, and the concept of array was introduced. Although omnidirectional antenna also has array, but only vertical array, monopolarized antenna appears planar and directional antenna. In terms of form, the present antenna is very similar to the second generation antenna.
In 1997, the dual polarization antenna (± 45 ° cross dual polarization antenna) began to go on the stage of history. At this time, the antenna performance has been greatly improved compared with the previous generation. Whether it is 3G or 4G, the main trend is dual polarization antenna.
In the era of 2.5G and 3G, there are many multi band antennas. Because the system at this time is very complex, such as GSM, CDMA and so on need to coexist, so multi band antenna is an inevitable trend. In order to reduce the cost and space, multi band has become the mainstream in this stage.
In 2013, we introduced MIMO (multiple input multiple output) antenna system for the first time. It was originally a 4 × 4 MIMO antenna.
MIMO technology improves the communication capacity. At this time, the antenna system has entered a new era, that is, from the initial single antenna to the array antenna and multi antenna.
But now we need to look far away. The deployment of 5g has started. What role will antenna technology play in 5g and what impact will 5g have on antenna design? This is a problem we need to explore.
In the past, the design of antenna is usually very passive: after the system design is completed, the index is proposed to customize the antenna. However, the current concept of 5g is still unclear. The R & D personnel for antenna design need to be prepared in advance to provide solutions for 5g communication system, and even influence 5g standard customization and development through new antenna solutions or technologies.
From the cooperation and exchange experience with mobile communication companies in the past few years, there are two major trends of base station antenna in the future.