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Coaxial cable of the radio frequency components low-frequency connector refers to the working frequency is lower than 3 MHZ electric connector, military low-frequency connector mainly include circular connector, rectangular connector, connector and separated off printed circuit boards, etc. The circular connector is mainly used for the external connection between the equipment and the equipment, which is used to connect the solid conductor, multi-core cable and cable, and the shape is cylindrical. The rectangular connector is mainly used for the connection between the bottom plate and the bottom plate. The tantalum capacitor is rectangular or trapezoid. The printed circuit connector is mainly used to print the connection of the circuit to the conductor or the printed board, including the edge connector, the plate connector, and the board to ask the connector. The separation of the detached connector is the general term for the detached connector, which is an important element in the missile, rocket, spacecraft and aircraft. The circular connector has a wide working voltage and working current range, tolerable environmental conditions, and specifications, which can produce high-density contact products.
Since the shape is net, it has the following advantages: easy sealing and easy to manufacture c. Facilitates the manufacture of fast connections, separation and strong locking connections. The disadvantage of circular connector is that it is not good to use ribbon cable; Install on panel, take up space big. When choosing circular connector, in addition to consider the factors usually, also should pay attention to the following factors of the connector contact number and the structure of the rated voltage and rated current contact element spacing and use wire termination with contact element method connector assembly free end connector and fixed connection method of materials, fastness and reliability of the connector installation method, shell form and environment can tolerate standardization degree and the applicable standards or specification. Application and select the rectangular connector rectangle should consider the problem, the main military standard GJB 142 a - 1994 "the cabinet with the shell positioning small rectangle electric connection code for total, GBJ 176 a - 1998 T491U686K004AT the J7 environmental line spring hole rectangular electric connector specifications and GJB 177 a - 1999 the contact pressure to a rectangle electrical connector general specification". The printed circuit connector includes the edge connector, the plate connector, and the board connector. Typical type of printed circuit connector.
Separation separable connector connector in missile "line in the process of rocket interstage circuit connection, disconnect the effect, say again so" connector "between level. Separable connector before the missile launch missile circuit and connect and disconnect the role of the ground equipment, so vividly called" umbilical cord type connector. Separation of separable connector is to rely on outside force to achieve separation and release. The coaxial cable of the radio frequency components many connector use only - time, But this time is absolutely reliable. The separation of fall off a way can be divided into thread cutting (rod), explosion separation and separation, through separation, knife, pneumatic separation, isolation, electromagnetic fuse, TDK, separation and thermal separation etc. This separation from falling out ways have their advantages and disadvantages. Such as explosion separation, advantage is available in missile separation before departure, can still use after change some parts, can be combined with its form, response speed, low cost; the disadvantage is that the fuse or explosive, working temperature below 205 ℃.
Its main military standard GJB 3159-3159 "cabinets and panels with rectangle electrical connector general specification", the GJB2905-1997 "environmental push/pull round electric connector total code fast separation and GJB 599 a - 1993 the environmental code for quick separation of high density small round electric connector. The adapter and rf connector are the electrical connection and separation functions of the transmission system through the mechanical meshing and separation of the plug and socket. To protect wang rf signal transmission effectively, rf coaxial connector should guarantee the reliable connection and separation in terms of mechanical and reliable contact, must, in accordance with rf coaxial transmission line in electric transmission theory rationally determine the diameter of the inner and outer conductor and the ratio of inner and outer conductor diameter, reasonable choose rf reflection and compensation structure size, coaxial cable of the radio frequency components and reasonable choose medium material, make it meet the effectiveness and consistency of rf transmission characteristics; The user must reasonably select the rf coaxial connector. Broad general international rf coaxial connectors, rf coaxial cable components in be used actually, inevitable problems involving mutual cross connection, including general within the q and series of rf coaxial connector series connecting to each other. Its applicable military standard for CIB, 680-1989 "standard of total rf coaxial connector adapter", GJB 681 a - 2002 the rf coaxial connector general specification and GJB 1920-1920 "environmental type of miniature coaxial connector total specification".
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