What Is a Screw Joint?

In communication terminology, a connector is a device that is installed between a cable and a cable and has a certain degree of insulation and sealing performance that allows two or more cables to run continuously. In genetic engineering technology, two DNA molecules or two ends of a DNA molecule can be paired and then covalently linked by a ligase. Now commonly used synthetic hexamer linkers (containing a nick for a specific enzyme), multiple hexamer linkers can also be linked together to form a polylinker.

Chinese Entry Name: Connector

English entry name: fixing connecting terminal connection adapter connector adapter spigotand socket joint

1.Type of connector: SMA, SMB, BNC, TNC, SMC, N type, BMA, etc.

2.Characteristic impedance: 50 ohm standard 50 or 50 non-standard, 75 ohm standard 75

3.Contact key method: male, female

4.Shell form: straight: no standard; curved: W

5.Installation form: flange: F nut: Y welding: H

6.Wiring type: Adapted cable type, inner diameter and outer diameter requirements, etc.

7.Attenuation: attenuation of signal strength caused by radio frequency signals corresponding to different frequency bands

8.Thread type: external thread, internal thread

Common transmission cable connector-L9

The L9 series is a small screw-type coaxial connector. It has the characteristics of small size, light weight, and excellent electromechanical performance. It is used to connect radio frequency coaxial cable in the high frequency loop of communication equipment and radio equipment.

DDF transmission racks commonly used in central computer rooms.

Common transmission cable connector-SMB

SMB type coaxial connector is a small push-in locking type RF coaxial connector, which has the characteristics of small size, light weight, convenient use, and excellent electrical performance. For connecting coaxial cables. It is often used on the wireless device to connect the base station side E1 transmission cable to the base station DDF small transmission box.

Common transmission cable connector-BNC

BNC type coaxial connector is a bayonet-type RF coaxial connector. It has the characteristics of fast connection and reliable contact. It is widely used in radio equipment and electronic instruments to connect RF coaxial cables.

It is often used in wireless test cables or cable connectors on microwave transmission equipment.

Common RF cable connectors

Common RF cable connector-DIN type-N type

Common RF Cable Connectors-SMC

SMC coaxial connector is a small screw-type RF coaxial connector, which has the characteristics of small size, light weight, good shock resistance, high reliability, etc. It is used to connect RF coaxial cables in radio equipment and instruments.

Common Transmission Cable Connectors-SMA

SMA series connector is a kind of widely used coaxial connector with small screw connection, long life, superior performance, high reliability, widely used in microwave equipment and digital communication equipment RF loop RF coaxial cable or microstrip.

It is often used on a wireless device for a GPS clock interface on a board and a test port for a radio frequency module of a base station.

Common RF cable connector-TNC

TNC type coaxial connector is a screw connector type RF coaxial connector, which has the characteristics of working frequency bandwidth, reliable connection, good seismic performance, etc. It is used to connect RF coaxial cables in radio equipment and instruments, and is especially suitable for In mobile communication equipment under shock conditions.

Common RF Cable Connectors-Type N

N-type coaxial connector is a medium and high power connector with threaded connector structure. It has the characteristics of strong shock resistance, high reliability, excellent mechanical and electrical properties, etc., and is widely used in radios under severe vibration and harsh environments. Used to connect RF coaxial cables in equipment and instruments.

Commonly used for GPS antenna feeders, RF connections of RF modules, lightning arresters, power dividers, combiners and other connectors.

Common RF cable connector-DIN type

DIN type (also called 7/16 or L29) series coaxial connector is a larger type of threaded connector, which has the characteristics of strong stability, low loss, high working voltage, etc., and most of them have waterproof structure, which can be used outdoors as Connectors for medium and high energy transmission are widely used in microwave transmission and mobile communication systems. ^[1]

Commonly used in base station antenna feeder connector, antenna connector, etc.

Common fiber connectors

The optical fiber connector is a device for detachable (movable) connection between the optical fiber and the optical fiber.It precisely connects the two end faces of the optical fiber so that the optical energy output by the transmitting fiber can be coupled to the receiving fiber to the maximum extent. And to minimize its impact on the system due to its involvement in the optical link, which is the basic requirement for fiber optic connectors. To a certain extent, fiber optic connectors also affect the reliability and performance of optical transmission systems.

Optical fiber connectors can be divided into common silicon-based optical fiber single-mode and multi-mode connectors according to the different transmission media, as well as other optical fiber connectors such as plastic, etc .; according to the structure of the connector, they can be divided into: FC , SC, ST, LC, D4, DIN, MU, MT and so on. Among them, ST connectors are usually used in wiring equipment, such as fiber distribution frames, fiber modules, etc .; SC and MT connectors are usually used in network equipment. There are FC, PC (including SPC or UPC) and APC according to the shape of the end face of the fiber; there are also single core and multi-core (such as MT-RJ) according to the number of fiber cores.