What are the design principles of RF coaxial connectors?

Connection and separation of this mechanical process requires the realization of the connector has a reliable connection interface; connector applicability and convenience requirements of the connection interface has a variety of different specifications and connection forms; connector versatility and interchangeability requirements of the connection interface standardization; connection and separation of the reliability and stability of the connector interface dimensions and inside and outside the conductor of the relative position of the stability of the mechanical retention force and enough. This is the basic requirements of the connector interface and structure, on the other hand, the connector needs to be connected to the coaxial cable, microstrip and other transmission lines, the same need to consider the matching of the connection transition, stability and reliability of the connection. Technicians believe that the stability and reliability of the mechanical connection is to achieve RF coaxial connector electrical connection reliability and stability of the foundation, stable and reliable mechanical structure coupled with uniformly matched impedance, reasonable dielectric materials, you can get excellent electrical performance of the RF coaxial connector. At the same time, the technical staff to point out that the impedance discontinuity is difficult to avoid: the interface of the mechanical connection and the interface of the tolerance leads to the connection interface impedance discontinuity; used to ensure the mechanical stability of the step positioning structure leads to the existence of discontinuous capacitance; mechanical tolerances and dielectric electrical parameters of the drift leads to the drift of the characteristics of the impedance; connectors and cables and microstrips and other parts of the RF transmission line connected to the suitability and electromagnetic field field shape Changes will also produce characteristic impedance discontinuity. Only these discontinuities one by one to identify and compensate, in order to make RF coaxial connectors have better electrical performance indicators.

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