With the development and evolution of wireless devices, the aggressive external antenna has gradually turned to the subtle internal antenna. However, customers may ask whether the performance of wireless products with built-in antennas in terms of signals will be greatly reduced, and their function performance will not be as good as that of external antennas?  

The antenna converts high-frequency electromagnetic energy in transmission into electromagnetic wave in free space, or conversely converts electromagnetic wave in free space into high-frequency electromagnetic energy in transmission line.  

In the wireless transmission system, antenna planning is particularly important. The quality of the antenna directly affects the quality of communication.  

After several tests and statistics in the equipment manufacturer's laboratory, we found that in the same environment, there is no big difference in the wireless signal strength between the wireless products equipped with internal antennas and the products equipped with external antennas, and the range of the large difference is only 1-3%. And the more barriers and the more complex the environment, the less obvious the gap will be. Therefore, we can conclude that the built-in and external antennas have little impact on the coverage of wireless routers.  

External antenna is mainly the psychological habit of most consumers. It is believed that the more antennas, the better the signal, and the stronger the antenna, the stronger the signal. The use of external antennas has virtually increased the number of faulty nodes in network engineering, and the construction quality of the defective antennas of engineering personnel is also a potential hazard.  

In the case of high requirements for node shape and size, the external antenna needs to occupy a large volume in space, which may not be suitable for some applications. At the same time, the external antenna reduces the user's acceptability in appearance, which has a certain impact on the market productization of related achievements.  

The design of built-in antenna is not only limited by size, but also, more importantly, performance challenges. There are problems in mechanical design when placing the antenna inside the equipment, such as the connection between the antenna and the equipment shell, the contact between the antenna feed point and the PCB board, and the design of the built-in antenna itself.  

With strong technical advantages and engineering accumulation, we have designed a series of high gain wireless products with built-in antennas. The built-in antenna is installed inside the equipment, which is mechanically rigid, not easy to be damaged, and has excellent mechanical performance. It does not need to consider the uneven antenna quality to reduce network hazards. The equipment antenna is highly integrated to ensure the perfect operation of the equipment.  

The external antenna has been replaced by the internal antenna, and most of the original concerns about the performance of the internal antenna are now gone. In terms of antenna efficiency, a key electrical parameter, a well-designed internal antenna can provide the same performance as an external antenna.

Compared with the external antenna, the internal antenna has the same performance, better appearance characteristics and more consolidation, so the change from external to internal antenna has become an irreversible trend.