The Selection Of RF Coaxial Connectors Is Mainly In The Following Five Factors

- Dec 03, 2018 -

1. Interface mechanism type Connector connection mechanism is not only to provide convenient and fast connection or separation of coaxial transmission line, the key is to provide stable electrical performance and environmental protection devices, when the use of this space is not enough to rotate the connection nut, should choose non-torsional connection mechanism.

In addition, for frame connectors, non-torsional connection mechanism is also very useful,

2. Electrical performance aspects

A characteristic impedance: the connector should match the impedance of the transmission system and cable, otherwise it will cause the system performance to degrade

B. Voltage resistance: The high pressure resistance of the connector should meet the pressure resistance requirements used by the system.

In general, if it is in a broadband application, some favorable wideband impedance matching characteristics should be sacrificed to obtain the required high voltage rating.

C High Efficiency

3. Cable mounting method and cable type. A cable Connection: Connector Cable mounting method has two kinds: one welding center conductor, combing braided wire standard tightening method is still universal, especially suitable for the case of no special installation tools, and easy on-site maintenance. Two. Welding center conductor, clamping method of crimping braided layer. Because of the high efficiency of the Crimping method.

Reliable termination performance and good consistency have become a common approach today.

b Cable Type: Suitable connectors should be selected according to the characteristics of various types of cables used (such as soft cables, semi-rigid cables, wrinkle conductor insulated cables, blister insulated cables), and the general outer diameter of small cables to match the small connectors.

4. Termination form

Connectors can be used in RF coaxial cables, printed circuit boards, frame drawer type functional components and their connection interface.

5. Materials & amp; plating

The shell and inner conductor are mainly brass, beryllium copper, tin bronze, insulating material is mainly tetrafluoroethylene. Central conductors are generally coated with silver or gold, with nickel or silver shells.

SMA, SMB,SSMB,SMC external conductors are all gold coated. RF coaxial connectors are used to transmit RF energy with a frequency range of up to 18GHz or higher.

The basic structure includes: Positive and negative neutral contact parts, outside the interface material, outside is the contact parts, the outside part plays like the cable outside the shielding layer function: both transmission signal, shielding grounding.