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2022

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Factors affecting the voltage standing wave ratio of china rf cable assemblies products

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China rf cable assemblies products The size of the stripped head of the cable core wire, the stripped size of the shielding layer, and the welding quality of the welding and cover will affect the characteristic impedance of the cable assembly, and affect the voltage standing wave ratio and transmission loss of the assembly.

  1. China rf cable assemblies products The size of the stripped head of the cable core wire, the stripped size of the shielding layer, and the welding quality of the welding and cover will affect the characteristic impedance of the cable assembly, and affect the voltage standing wave ratio and transmission loss of the assembly.

China rf cable assemblies products

  2. China rf cable assemblies products The stripping head of the cable core wire is too long. The characteristic impedance of the cable selected for this cable assembly is 50 Ω, and the size of the cable stripping head required by the connector. Dimensions mean that a part of the core wire will be exposed in the air, and the lack of this part of the insulation layer will cause the cable impedance to deviate.

  3. China rf cable assemblies products The peeling size of the cable shielding layer is too long If the peeling size of the cable shielding layer is larger than the required size, the cable of this part length is not covered by the outer conductor, and the characteristic impedance here is equivalent to the height of the polytetrafluoroethylene insulated wire. Impedance, far greater than the 50 Ω impedance requirement, will cause a sudden change in the impedance of the cable assembly, and the VSWR will increase.

  During the design process of china rf cable assemblies products connectors, the diameter of the inner conductor and the insulation sleeve has a sudden change, and the insulation sleeve has been cut, so the size of the stripped head of the cable insulation layer has been compensated to make the component standing wave To achieve the best performance, the stripping head size given in the connector design should be followed at this time, otherwise it will easily cause impedance mismatch between the cable and the connector, resulting in larger standing waves.

  After improving the processing technology of china rf cable assemblies products, the standing wave ratio is reduced, and the self-excitation phenomenon of the receiver amplifier is eliminated. Improper handling of every small link in the cable assembly process will affect the performance, and the cable process management also needs to be strengthened.

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