Coaxial cable#Semi-rigid

Rigid coaxial cable are a group of coaxial cables, which are characterized by a rigid ( rigid english ) outer conductor and inner conductor in the form of metallic tubes. Rarely is the German term "solid -sheath coaxial " used. The advantage of the rigid coaxial cables is that the leakage radiation and the attenuation, in particular at higher frequencies in the GHz range, lower than that of conventional coaxial cable. This allows greater power to be transferred. The disadvantage is due to the rigidity of the complex processing, and the use is restricted to applications where mechanical flexibility of the coaxial cable is necessary.

Species

Semi-rigid coaxial cable

Semi-rigid coaxial cables are mainly used in the frequency range of a few GHz up to several 10 GHz. The shape of the cable can be determined by bending at corresponding Biegel honor as part of the cable assembly, then a change in shape is no longer possible in general. The cable is running normally without an outer insulation.

Typical diameters range from 1.5 to 5 mm. The dielectric is almost always made ​​of Teflon. The outer conductor example, can be soldered directly to corresponding SMA connectors as shown in the adjacent figure. For heavier cables the inner conductor also takes on the role as a connector pin with SMA connectors. The surface of the cable, even with aluminum outer conductor, be tinned.

Application in high-frequency technology, for example, for transmitters with power levels up to several 100 W.

An example of a semi-rigid coaxial cable is RG402 / U with the following data:

Rigid Coaxial Line

Rigid -Line Coaxial cable consists of fixed, unchanging in its form elements such as straight pieces of cable, angle elements, clamping elements and connectors. They can not be accommodated by bending in the form in contrast to the semi-rigid coaxial cables, the construction is made of both the inner conductor and the outer conductor of one metal tube. The area in between is not consistently filled with the dielectric, such as Teflon - it will instead be used at fixed intervals spacers in the form of discs of Teflon, the remaining portion of the dielectric is air.

Rigid -Line coaxial cables are designed for the transmission of large RF powers up to the area above 100 kW and are therefore preferably used for example in the area of ​​power amplifiers from radio stations.

Rigid -Line Coaxial cables are used with the following standard dimensions: