2.92 mm connectors Design and Structure
2.92 mm connector is an RF coaxial connector with the following features in its design and structure:
2.92 mm connector overall structure:
Housing: usually made of metallic material that protects the internal structure and provides mechanical support. The shell surface is usually plated with metals such as nickel or silver to improve its corrosion resistance and external shielding properties. The screw thread structure is designed to facilitate a firm screw connection with other equipment or connectors.
Center Pin: located in the Center of a connector, it is a key component of signal transmission and is usually made of metal. The center pin is connected to the peripheral equipment through a hole in the connector and is responsible for transmitting signals from one end to the other.
Insulator: located between the center needle and the external shield. The main function of the Insulator is to separate the two and to support the center needle. Insulators are usually made of insulating materials such as plastics or ceramics to prevent short-circuit between the signal and the external shield and ensure the normal transmission of the signal.
External Shield: wrapped around the inner central needle, used to Shield electromagnetic interference from the outside world, to protect the internal signal from External interference. The external shield is also made of metallic material and is closely connected to the housing to form a complete shield structure.
2.92 mm connector Size:
The outer conductor has an internal diameter of 2.92 mm, hence its name. The diameter of inner conductor is 1.27 mm. This size design enables the 2.92 mm connector to meet the requirements of high frequency signal transmission while maintaining a small size.
The dimension of different parts has strict tolerance range, for example, the dimension precision of the connecting parts directly affects the inserting and pulling force of the connector and the stability of the connection.
Connection: generally using thread connection, this connection has the advantages of strong connection, high reliability, to ensure that in a variety of complex working environment to maintain a stable connection.
2.92 mm connector performance optimization design:
Center pin design: the shape and size of the center pin are carefully designed to ensure good contact with the center pin of the paired connector, reduce the contact resistance and reduce the loss in the process of signal transmission. For example, the head of the center pin may have a special shape, such as a cone or sphere, to allow smooth contact with the center pin of the paired connector during insertion and extraction.
Slotting design: some 2.92 mm connector sockets will be slotted to increase the flexibility of the socket, making the process smoother and reducing wear on the center pin, improve the life and reliability of the connector.
Impedance matching: the characteristic impedance of the 2.92 mm connector is 50ω, which is a commonly used impedance standard in RF systems. In order to achieve good impedance matching, the size and material selection of each part of the connector need to be accurately calculated and designed, to ensure that the signal in the transmission process because of impedance mismatch will not produce reflection and loss.
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