The quality control of spring antennas is very important. As spring antennas are produced using spring machines, the performance of each batch of antennas may not be completely consistent. In this case, quality control is particularly important. Professional antenna companies will conduct targeted quality control tests to ensure the consistency of antenna performance, while unprofessional companies often do not have such control.
The welding of spring antennas is also a crucial step, because the characteristics of the antenna determine that even if the antenna is welded in the same position, if the welding direction and method are not consistent, it will still lead to differences in antenna performance. How big is the specific difference? Let's still conduct an experiment. Weld the same antenna in the same position on the test board, but intentionally weld the antenna in a different direction.
The same antenna is soldered to the same position on the same test circuit board, but the soldering direction is different. However, in this case, there is also a significant difference in the resonant frequency of the antenna during testing. It can be seen that if the soldering method is not consistent when using spring antennas, it can also cause antenna performance problems.
This requires us to ensure that the welding direction of the antenna during mass production is consistent with the welding direction of the antenna manufacturer when selecting the antenna, especially when arranging antenna welding with the assistance of the OEM factory. Only in this way can we ensure the consistency of antenna performance.
In fact, as mentioned earlier, the selection of spring antennas requires specialized debugging and selection, and the issue of maintaining consistency in the installation direction when using spring antennas is not unique to spring antennas. Any built-in antenna has the aforementioned issues, which are caused by the physical characteristics of the antenna. For example, FPC antenna is also a common built-in antenna solution. If an FPC antenna is not customized and debugged, it is likely to have poor antenna performance due to impedance mismatch. FPC antenna may also have inconsistent performance between antennas due to inconsistent pasting position and direction deviation. These phenomena are determined by the characteristics of the antenna itself, and we can only and can completely overcome them through technological means.
