What are the precautions for RF cable assembly?

RF Coaxial cables are higher-grade cables designed to meet specific impedances and transmit higher-quality signals, which can work at higher frequencies and data rates. A coaxial cable contains two conductors located in the center of the same axis. The coaxial cable contains an internal signal wire, which is usually made of copper and wrapped with a dielectric material. The central conductor and insulator wrap the shielding layer or grounding conductor and the insulating shell or sheath.

Excellent performance of RF cable assemblies：

1.Excellent resistance performance can extend the service life of the module

Cost-effective cable assemblies usually have good resistance performance. This performance is one of the conditions that determines the transmission power of the radio frequency cable assembly and whether the signal meets the requirements. Only with excellent resistance performance, the radio frequency cable assembly will not cause additional cable equipment loss when transmitting signals, and can greatly increase the service life of the device.

2.Very small return loss can make signal transmission easier

Low-priced and high-quality cable components generally have relatively low loss, and some common cable components have a large return loss, which will interfere with the signal transmission of the device and may even cause signal reflection. If there is signal reflection, then It will weaken or even disappear the signal transmitted by the RF cable assembly.

3.The heat generation value is in a reasonable range to protect the safety of components

The radio frequency cable assembly generates a part of heat energy when it is working. Normally, the heat value of a good radio frequency cable assembly is within a reasonable range and will not cause damage to the assembly. However, the general assembly encounters some heat energy during signal transmission. The twists and turns cause the heat value to be high, which will have a certain impact on the safety of the components.

So what are the precautions when assembling the RF cable?

1.The choice of cable assembly

When selecting radio frequency cable components, try to pay attention to the relevant requirements of the equipment, and also pay attention to the detailed understanding of the corresponding interface, power and parameters in advance, and then choose a more suitable and reliable cable type. After all, the current application range of cable assemblies continues to expand, so many different welding and shielding forms have been introduced, and these forms will also have a corresponding impact on the later installation. Therefore, pay attention to the performance indicators of the cable assembly and the corresponding environmental capabilities. Carefully consider and choose a more suitable welding method.

2.Soldering heat resistance design

When carrying out the soldering and heat-resistant operation of the cable assembly, it is necessary to fully consider the insulator fixing and the assembly positioning tooling in the coaxial cable. This is because the insulator is often designed into the shell during the production design process, and the cable is solder. Deformation is also prone to occur during operation. Only by adopting more reliable soldering methods to improve the welding quality of the components can the offset phenomenon be avoided. At the same time, during the installation of the cable assembly, attention should be paid to the reasonable calculation of the diameter of the outer conductor of the cable and the inner diameter of the pin to understand its fundamental voltage resistance.

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