Phase Stable Cable Assemblies Phasing Solution

Based on the analysis of the mechanism affecting the phase consistency and the experience, we discuss the phase matching method and the specific steps of RF Phase Stable Cable Assemblies as follows. Then we obtain an efficient solution for the manufacturing of phase-matching assemblies.

The following is a list of catalogs:

• Short Assemblies

• Long Assemblies

Short Assemblies

The assemblies mentioned here mainly refer to short RF Phase Stable Cable Assemblies with lengths ≤ 1m. The method used for phase matching of these assemblies is mainly to guarantee their electrical length directly by ensuring the mechanical length. Because the assembly is short, the influence of media unevenness is less obvious. So it usually can be ignored. This type of Phase Stable Cable Assemblies on the precise requirements of the length of the drop chat higher. Its specific requirements are to what extent to use the frequency and the required phase width. At present, the domestic manufacture of the ordinary falling machine may not reach the usual accuracy requirements, and the quality of the cut is not good. The general practice is to design tooling with a line groove. The width of the line groove is the upper tolerance of the diameter of the line groove. The drop material can just be able to jam the cable into the line groove, both ends of the cable fixed with clamps, and then use the spacer to drop the material. The drop material shall ensure that the gap is as flush as possible. You can consider a laser cutting line or saw blade to achieve this. If the process can be installed first one end of the connector in the other end of the cable cutting will be a more accurate phase. The fixture can effectively avoid the measurement error in the mechanical length caused by the natural bending of the cable, which is easy to operate, and the consistency of the mechanical length between the cables is high. It ensures a consistent electrical length between the cables. In addition, the drop tooling can also be made of metal pipe parts, the cable will be loaded into the tube after the drop, and the same effect as the wire channel method. The tooling processing is relatively more difficult. This method is an efficient and convenient way to match short components, but it is not suitable for long components. It is more suitable for semi-steel or semi-flexible cables with uniform solid insulation.

Long Assemblies

For long Phase Stable Cable Assemblies (length > lm), due to the influence of media inhomogeneity. If only a consistent mechanical length is guaranteed, then after assembly. Phase dispersion will be found to be very serious, and the reworking workload will be very heavy. Sometimes it is not even possible to distinguish which assembly should be repaired, and the scrap volume will be large. Therefore, to reduce the component rework workload, improve the efficiency of component alignment and reduce scrap. Test instruments are used to measure its length as an auxiliary means during the assembly process, and ensure the consistency of electrical length by cutting before assembly.

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