6.25 Gbps coaxial structure differential data cable assembly for space navigation
A coaxial cable and cable assembly technology, applied in the direction of coaxial cables/analog cables, electrical components, insulated cables, etc., to achieve the effects of improving signal transmission rate and reliability, strong anti-interference ability, and low loss
Active Publication Date: 2021-03-26
CHINA AEROSPACE TIMES ELECTRONICS CORP
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Problems solved by technology
[0004] The technical problem solved by the present invention is: to overcome the problems of low-loss and low-distortion transmission of high-speed data in the existing aerospace model digital transmission subsystem, and propose a 6.25Gbps coaxial structure differential data cable assembly for aerospace, which can conveniently and reliably realize aerospace Physical channel for high-speed data transmission of model data transmission system
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[0042] The invention provides a 6.25Gbps coaxial structure high-speed differential data cable assembly for aerospace, which serves as a key physical path for TLK3118 high-speed data transmission, and mainly realizes low-loss and low-distortion transmission of high-speed data for payload data.
[0043] Specifically, the 6.25Gbps coaxial high-speed differential data cable assembly for aerospace includes a micro-rectangular coaxial connector 1, a micro-coaxial cable 2, a wave-proof sleeve 3, a nylon sheath 4, and a heat-shrinkable sleeve 5. Taking the four-core high-speed differential data cable assembly as an example, by designing the core micro-rectangular coaxial connector 4, such as figure 2 As shown, four low-loss micro-coaxial cables with a characteristic impedance of 50Ω are used to connect end to end to form a cable assembly. The first coaxial contact is a high-speed differential positive signal, and the second coaxial contact is a high-speed differential negative signal ...
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Abstract
The invention relates to a 6.25 Gbps coaxial structure differential data cable assembly for space navigation. A high-speed data cable assembly comprises a micro rectangular coaxial connector, micro coaxial cables, a wave-proof sleeve, a nylon sheath, a heat-shrinkable sleeve and the like. Common differential signals are transmitted through a twisted-pair differential cable, but when the twisted-pair differential cable is used for high-speed signal transmission, high-frequency attenuation is large, the signal anti-interference capacity is poor, and the high-speed data cable assembly is not suitable for long-distance use. The high-speed data cable assembly uses two paths of micro coaxial cables with 50-ohm impedance to achieve transmission of 6.25 Gbps differential high-speed signals, has the characteristics of low high-frequency loss, short time delay, strong anti-interference capability and high reliability, is widely accepted by aerospace models, and has been applied to aerospace model data transmission subsystems.
Description
technical field [0001] The invention relates to a 6.25Gbps coaxial structure high-speed differential data cable assembly used for serial data transmission in an aerospace environment, and belongs to the technical field of high-speed cable assemblies. Background technique [0002] The invention relates to a high-speed serial data transmission protocol TLK3118. The TLK3118 is a G-bit serial transceiver released by TI Company, which is suitable for an ultra-high-speed bidirectional point-to-point data transmission system. It has the advantages of high transmission rate, simple interface, and strong anti-interference ability. It has been gradually applied to aerospace model data transmission systems to realize high-speed transmission of massive data. The transmission rate of the TLK3118 protocol can reach up to 6.25Gbps, and the engineering application has been gradually realized in China at present. [0003] When the traditional twisted-pair differential cable is used for high...
Claims
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IPC IPC(8): H01R31/02H01B7/17H01B7/18H01B11/18H01R13/6591
CPCH01R31/02H01R13/6591H01B7/18H01B11/18H01B7/17
Inventor 王祥孙坤明姜伟彭清华徐金玲李翔杨皓深陈继伟
Owner CHINA AEROSPACE TIMES ELECTRONICS CORP