Coaxial cables are used to transmit the energy of RF and microwave signals. This is a distributed constant circuit. The electrical length is a function of physical length and transmission speed, which is essentially different from low-frequency circuits.
RF cables can be roughly divided into semi rigid and semi flexible cables, flexible braided cables and physically foamed cables. Different types of cables should be selected according to different uses. Semi rigid and semi flexible cables are generally used for internal interconnection of equipment; In the field of testing and measurement, flexible cables shall be used; Foamed cables are commonly used in the air supply system of base stations.
1、 Semi rigid coaxial cable
0.085in/0.216cm semi-rigid cable, n-type male/N-type female
As the name implies, the semi-rigid cable is not easy to bend and form. Its outer conductor is made of aluminum tube or copper tube. The RF leakage is very small (- 120dB). The signal crosstalk in the system can be ignored.
The passive intermodulation characteristics of this cable are also ideal. To bend into a certain shape, a special molding machine or manual mold is required. The result of such a troublesome processing process is very stable performance. Semi rigid cables use solid PTFE as the filling medium, which has very stable temperature characteristics, especially in high temperature conditions with very good phase stability.
The cost of semi-rigid cable is higher than that of semi-flexible cable, which is mainly used in various RF and microwave systems.
2、 Semi flexible coaxial cable
Using LC141TBJ coaxial cable, wrap the 1.5 foot long male SMA around the SMA and thread it through the wall female cable assembly