RF connectors can be far and near in people’s lives, but in our daily life, they are inseparable from RF connectors. They play a major role in our daily lives, so we can learn more and Learn about RF connectors.

    In addition to the requirements of general characteristics, RF coaxial connectors also have a very key requirement that they must be good in touch, reliable in work, and convenient in maintenance. The reliability of the work of the radio frequency connector will immediately endanger all the normal work of the airport power circuit, and even the misfortune of all the hosts. Therefore, the host power circuit has very strict requirements for the quality and stability of the radio frequency connector.

    Therefore, the high quality and high reliability of the radio frequency connector make it widely used in aviation, aerospace, national defense and security and other military system software.

    There are three common classifications of radio frequency connectors: appearance design, structure, and main purpose.

    1. Appearance design

    Circular RF connector: mostly used in military equipment (such as airlines, aerospace)

    Rectangular RF connector: simple structure, mostly used for printed pcb circuit boards of electronic products 

    2. Structure

    The composition of the fixed-end radio frequency connector (female contact-power socket) and the free end radio frequency connector (male contact-power plug). The power socket is fixed on the power consumption component according to its square (circle) plate (some or welding methods are selected). The power plug is generally connected to the cable, and the power plug and the power socket are connected according to the docking screw cap.

    Structural features of radio frequency connector: resistant to natural environment, interface type (rapid) docking, multi-button (error insertion prevention), touch body

    The three basic elements of the radio frequency connector are composed of the shell, the conductor and the insulator, the contact body and the transmission line riveting butt, (single root is easy to solve the common fault).

    1) Shell

    Refers to the housing, connection screw cap, and end fittings of the socket plug.

    The function of the case is to protect the internal components of the radio frequency connector such as the conductor, the insulator, and the contact body (collectively called the pin socket) from being damaged. The precise positioning key slot on the top ensures the precise positioning of the power plug and the power socket. The connecting screw cap is used to connect and separate the power plug socket. The end fittings are used to maintain the connection between the power line and the touch body line from being damaged and to fix the cable.

    The shell has the function of a certain magnetic shielding material, and the shielding ring is added to ensure the 360° interference signal shielding ability.

    The shell is generally made of aluminum alloy processing (machined, hot forged, aluminum die-casting). Steel shells are mostly used for glass-breaking sealing and welding and heat-resistant RF connectors.

    2) Conductor and insulator

    It is composed of a pin-mounted conductor and an insulator, a socket-mounted conductor and an insulator, an interface sealing body, and a wire sealing body.

    Promote the pin socket to be stable on the set position, and make each touch body and each touch body between the shell to achieve mutual electrical equipment insulation.

    Use conductor and insulator plus interface sealing body and wire sealing body to obtain sealing countermeasures, thereby improving the environmental resistance of RF connectors.

    Most of the conductors and insulators are made of thermosetting plastic rubber products, and the interface sealing body and the sealing body are made of silicone molds. It can be more strongly integrated into the product's heat resistance, ultra-low temperature, and flame retardancy, thereby ensuring the stable and reliable geometric dimensions of the components.

    3) Touching body

    It is composed of yang touch body and yin touch body (also called pin plug and socket).

    Welding, crimping, press-in, and winding are common interface methods for touch bodies, and the key is to complete the power circuit docking.

    The pin socket is an important component of the radio frequency connector, which directly affects the stability of the radio frequency connector. Most of the pin sockets are machine-added with ductile alloy copper materials with excellent conductivity, and the surface layer is gold-plated and electroplated to achieve low contact resistance and corrosion resistance. Sockets generally include split slot sockets, wire spring sockets, crown spring sockets and punched sockets.

    3. Main purpose

    Radio frequency connectors, hermetic radio frequency connectors (glass sealing welding), high temperature radio frequency connectors, etc.

    Future trends

    In the future, with the development of science and technology, the high quality and reliability of radio frequency connectors will grow to perfection in the high, precise and cutting-edge industries.

    1. The technology of growing high-speed and high-frequency RF coaxial connectors

    With the prevalence of the 5G network era, 5G's high data information and high transmission requirements are destined to require upgrades in the characteristics of radio frequency connectors. The radio frequency connector is responsible for the conversion of optical and electronic signals in 5G communications. 

    2. The technicality of the RF connector with higher growth accuracy and lower cost

    In the automobile trading market, automobile connectors are a very large sales market, and vehicles have very high requirements for safety factors. With the growth of pure electric vehicles, the requirements for precision and cost of radio frequency connectors have become higher and higher, which has promoted the popularization of radio frequency connectors.

    3. The technology of RF connector that grows smaller and more convenient and faster

    The previous RF connector was used for many contacts, and more of it was added to the expansion card slot. In the growth of the 5G era, a piece of fiber optic equipment is likely to have dozens of RF connectors, which prompts RF connectors to be more sophisticated and capable of excellent performance.

    During the period of rapid development of radio frequency connectors, we must follow the footsteps and update and upgrade to better solve the challenges in the future. The growth of radio frequency connectors is also to better and stronger to ensure the quality of people's lives.