The customizable built-in antenna made Mr. Huang extremely delighted and moved to tears.

A built-in antenna is an antenna located inside the device, which cannot be seen from the outside of the device. The industry where built-in antennas are most concentrated currently is the mobile phone industry. There are numerous antennas in a mobile phone, but none of them can be seen on the appearance of the mobile phone. The reason for this is that modern smartphones all use built-in LTE, 5G, Bluetooth, and Wi-Fi antennas.

However, when it comes to the theory of antennas, even general professional antenna technicians may find it difficult to explain it clearly. Moreover, the design of high-performance antennas relies heavily on simulation software and an anechoic chamber testing environment. In addition to the characteristics of small size and portability, modern electronic devices also emphasize industrial design to make the product appearance more aesthetically pleasing. Using built-in antennas is most in line with the design trend of wireless applications. But it is precisely because of the small size that the installation space for the antenna is narrow, the required clearance area for the antenna is insufficient, and there is strong interference from the surrounding circuits. For example, in mobile phone applications, to solve the above problems, most built-in antennas use LDS laser direct structuring antennas, which fall into the category of customized antennas.

Recently, Mr. Huang from Lanzhou called me anxiously, saying that he had a project for a built-in antenna used in mobile phones, which was extremely important and urgent. He had already approached several built-in antenna factories to make samples, but the samples were all designed as general built-in antennas, and the center frequency was higher than that required for the actual application, so they couldn't pass the test. As the sample submission deadline for the project was approaching, if a qualified sample couldn't be submitted soon, the project would fail. Mr. Huang was as anxious as an ant on a hot pan, and he had lost his appetite and suffered from insomnia for several days because of this project.

After communicating with us, Mr. Huang sent the samples to our company. Through the analysis of the samples, our company quickly confirmed the customization plan and successfully made the samples. When we informed Mr. Huang of this result, he received the samples with a lot of unease. After testing the samples, he finally saw hope and placed an order with our company for mass production.

The process of customizing an antenna is to hand over the entire device of the product to the antenna design engineer. Through a large number of repetitive passive and active tests, the antenna design is continuously optimized. The required equipment is very important in this process. In short, customizing an antenna requires a large investment of manpower, equipment, and time, and it is not feasible for general non-mass wireless product development work.

In addition to customized built-in antennas, there are also standard built-in antennas. These products cover various common frequency bands, and there are a large number of high-performance built-in standard antenna products in the market, which can meet the antenna requirements of most conventional applications and perfectly avoid the expensive demand for customizing built-in antennas.

With the popularization of 5G technology, there are more and more 5G modem chips, and naturally, there will be more 5G applications other than mobile phones, especially applications that pursue high data transmission rates, such as drones, intelligent driving, visual robots, and industrial communication.