Future antenna development trends and key technology analysis
Source: | Author:XJS TECHNOLOGY | Publish time: 2020-06-08 | 240 Views | Share:
1 Future antenna technology development forecast

From the perspective of wireless network development trends and various challenges facing operators, the future development of antenna technology will definitely follow the following directions.

⑴Small size of antenna

The miniaturization of the antenna is to reduce the volume of the antenna under the condition that the performance of the antenna is basically unchanged. Miniaturization is a basic technology and the eternal development direction of antennas.

⑵Multi-standard network common antenna feed application

In the future, multiple systems will share an ultra-wideband antenna. Not only will the antenna operating frequency band cover multiple systems, but also each system can be independently adjusted according to the different requirements of the system. The application of multi-standard antennas will save station construction costs and sky resources, and flexibly meet the network coverage requirements of each standard.

⑶The antenna function mode is developing towards the intelligent function

In the future, the antenna will realize intelligent beam forming, beam pointing control, beam splitting and remote control, which can flexibly meet the application requirements of various scenarios. The intelligent operation of the antenna realizes the interoperability between systems and the optimized utilization of resources, and finally realizes an intelligent operation and maintenance method.

⑷The connection between the antenna and the RF module develops from a separate type to a centralized type

In the future, centralized equipment will replace separate equipment, optical fiber will replace cables, and antennas and main equipment will be miniaturized and integrated and fully integrated to realize the saving of sky resources and flexible deployment methods, adapting to the trend of flat network development.

2 Key technology analysis of new antenna

2.1 Miniaturized antenna technology

There are two ways to achieve antenna miniaturization. The first is to optimize the antenna design to achieve a rapid drop in the level outside the service area, lower side lobes and back lobes, reduce cross-polarization levels, and adopt a feed network with low loss, no surface wave parasitic radiation, and low VSWR. Improve the antenna radiation efficiency, so as to achieve the reduction of antenna volume under the same gain. In this way, the performance index of the antenna is unchanged, but it is limited to technical difficulty, the volume reduction is limited, and the implementation is relatively difficult and the cost is high. The second implementation is to reduce the volume by reducing the antenna gain. The volume reduction in this way is obvious, and the volume will be reduced by half every time the gain drops by 3 dB, which is easier to achieve, but the decrease in the gain index after miniaturization will limit the application range of the antenna. In order to ensure the performance of the antenna after miniaturization to meet the application requirements of different scenarios, the future antenna miniaturization technology should be developed in the first implementation.

At present, mobile communication antennas have achieved a certain degree of miniaturization through the first method. There are also application cases of miniaturized antennas in the industry, but they are limited to various factors. At present, the installation of miniaturized antennas still requires certain sky resources, and the performance indicators need to be improved. , The working frequency band is narrow. If the application in the network requires multiple miniaturized antennas to work simultaneously to cover the entire frequency band, this loses the advantages and significance of miniaturization.

In the future, operators should guide the industry's superior strength, promote the full integration of antenna back-end equipment, meet the requirements of using the environment to beautify and stealth, and realize the real savings and flexible deployment of sky resources. While promoting the miniaturization of the antenna, the broadband of the working frequency band of the antenna is realized, which is beneficial to reducing the number of antennas and future system upgrades, and fully reflects the advantages of the miniaturized antenna.

2.2 Multi-standard antenna technology

The multi-standard antenna is to allow different communication systems to share an antenna in order to effectively save installation space. The realization of the multi-standard antenna is mainly to realize the broadbandization of the antenna working frequency band by reasonably placing the radiation unit inside the antenna, and to realize the adjustment and control of signals in different frequency bands by combining and splitting the signal.