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Method and assembly for improving mechanical phase stability of flexible microwave coaxial cable

A coaxial cable, microwave technology, applied in electrical components, parts of connecting devices, circuit/collector parts, etc., can solve the problems of low pass rate, non-uniformity, length processing error, etc., to improve the yield and Consistency, reducing the effect of transmission phase, reducing the effect of stress variation

Active Publication Date: 2017-10-13
NANJING ARANCE ELECTRONICS CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These will lead to changes in transmission characteristics
Therefore, in the testing process of the existing test cable assemblies, the transmission phase will still change to a certain extent with the bending of the cable, and the mechanical phase stability still cannot meet the high-precision test requirements.
In addition, due to the existence of material property errors and length processing errors of coaxial cables and sheaths, the initial stress states of the cables and sheath materials after assembly of the test cable assemblies are different, so the mechanical phase stability of each test cable assembly is different. Larger, lower pass rate
Generally, the screening method is used for production, the cost is high and the efficiency is low, even if the mechanical phase stability performance index of qualified products is relatively large.

Method used

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  • Method and assembly for improving mechanical phase stability of flexible microwave coaxial cable
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  • Method and assembly for improving mechanical phase stability of flexible microwave coaxial cable

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Embodiment Construction

[0020] The present invention will be further illustrated below in conjunction with the accompanying drawings and specific embodiments. This embodiment is implemented on the premise of the technical solution of the present invention. It should be understood that these embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention.

[0021] A method of improving the mechanical phase stability of a flexible microwave coaxial cable by applying pretension at both ends of the coaxial cable. The pre-tensioning force makes the coaxial cable in a tensioned state. At this time, the elongation of the coaxial cable becomes smaller under the same bending radius, and the pre-tensioning force causes the materials on both sides of the inner and outer sides of the bending radius to be subjected to tensile stress at the same time. The stress variation range of the material during reciprocating bending is reduced. This will signific...

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Abstract

The invention provides a flexible microwave coaxial cable mechanical phase stability improving method which applies pre-tensioning force at two ends of coaxial cables. The invention also discloses a flexible microwave coaxial cable assembly. The flexible microwave coaxial cable assembly comprises the coaxial cables and a protection sleeve which covers the coaxial cable outer layer, wherein pre-tensioning force adjusting mechanisms are arranged on welding structures at two ends of the coaxial cables. The flexible microwave coaxial cable mechanical phase stability improving method and assembly has the advantages of obviously reducing influences to transmission phase from testing cable assembly mechanical bending, enabling the pre-tensioning force of the coaxial cables to be consistent and accordingly eliminating mechanical phase stability difference caused by the material characteristic difference of the coaxial cables and the protection sleeve and the length machining difference; obviously improving the phase stability of the testing cable assembly mechanical bending; being applicable to microwave flexible cable assemblies having requirements for a mechanical stationary phase characteristic except for a testing cable assembly.

Description

technical field [0001] The invention relates to a method and an assembly for improving the mechanical phase stability of a flexible microwave coaxial cable. Background technique [0002] In the field of microwave communication and testing, flexible microwave coaxial cable assemblies are mainly used for the transmission of microwave signals between communication and testing systems. One of its typical applications is the measurement and analysis of power loss, gain and phase characteristics of microwave components. This kind of measurement and analysis is generally accomplished by a vector network analyzer (referred to as vector network) and a high-performance stable amplitude and phase microwave coaxial test cable assembly (referred to as a test cable assembly). Among them, the test cable assembly is used to connect the VNA test port and the input and output ports of the device under test, and is a flexible transmission channel for microwave signals (such as figure 1 ). D...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01R43/00H01R13/502H01R31/06
CPCH01R13/502H01R31/06H01R43/00
Inventor 曹刚
Owner NANJING ARANCE ELECTRONICS CO LTD
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