A coaxial radio frequency cable adapter

Abstract

The invention provides an adaptor for thick-thin coaxial radio frequency cables. The coaxial radio frequency cable adaptor comprises a shell which is of a ladder transition structure, adaptor components arranged in the shell and adaptor accessories located on the two ends of the adaptor; the adaptor components comprise a core connection pipe, an insulator, an insulating ring, compensating pieces and a pressing sleeve which all make close contact with one another. The core connection pipe is connected with the thick cable core wire and the thin cable core wire in a soldering tin brazing mode, the insulator and the core connection pipe and the shell which are connected with the insulator are arranged outside the core connection pipe, and the large compensating piece and the small compensating piece are arranged between the thick end and the thin end of the core connection pipe and insulating layers of the thick cable and the thin cable; the fastening connection between the adaptor and the thick cable and the thin cable is achieved through the adaptor accessories such as spacing cones, clamp springs, locking ring sleeves, plug screws and the like. According to the coaxial radio frequency cable adaptor, multistage ladder compensation transition is adopted for cable adaptation from the thick cable to the thin cable, a fastened solid structure is formed by the adaptor components in the shell of the adaptor and the shell after the cables are connected, and the coaxial radio frequency cable adaptor has the advantages that the cable adaptation reflection coefficient is small and the adaptation state is stable and reliable.

Description

technical field [0001] The invention relates to a cable adaptor, in particular to a coaxial radio frequency cable adaptor which can be used for adapting thick cables and thin cables with large diameter differences, and has a small signal transmission reflection coefficient at the adaption point and a stable and reliable state of transition. device. Background technique [0002] Long-distance coaxial RF cables (outer diameter greater than 22mm, referred to as thick cables) are often used in long-distance test systems for precision pulse signals (IF or / and VHF), which are often used to connect measurement equipment. For coaxial RF cables with short and thin cable diameters (outer diameter less than 12mm, referred to as thin cables), the test requires thick cables to be transferred to thin cables. The transfer point must have a low reflection coefficient, and the transfer state is stable and reliable. In the prior art, for coaxial radio frequency cable transfer, different form...

AI Technical Summary

Problems solved by technology

The cable transfer process is complicated and the transfer cost is high. After transfer, the connection status of thick cables and thin cables and the reflection coefficient of transfer points cannot be completely and reliably controlled, which cannot meet the requirements of thick cable transfer to thin cable in the precision pulse signal long-distance test system. Requirements

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