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Characteristics of Radio Frequency Cable and Matters Needing Attention in Selection

Cables, as everyone should know, there will also be cables on telegraph poles. In fact, cables are indispensable for things we don't know, and cables are one of the indispensable keys to many things. All in all, its effect is really great, and its scope of application is really wide. But have you heard of RF cables? Some people may not understand RF cables. So what are RF cables? What are their characteristics?


1. Application of RF cables


RF cables are cables that transmit electromagnetic energy in the radio frequency range. RF antenna cable is an indispensable component in various radio communication systems and electronic equipment. They are widely used in wireless communication and broadcasting, television, radar, navigation, computers and instruments.


2. Characteristics of RF cables


RF cables are cables that transmit electromagnetic energy in the radio frequency range. It is composed of an inner conductor, an outer conductor, and a medium supporting the inner and outer conductors that are coaxial with each other. It is also called a coaxial cable. The characteristics of RF testing cable includes electrical and mechanical properties. Electrical properties include characteristic impedance, transmission loss and frequency characteristics, temperature characteristics, shielding characteristics, rated power, and maximum withstand voltage. Mechanical properties include the minimum bending radius, the weight per unit length, the maximum allowable tension, and the ageing characteristics and consistency of cables.


3. Selection requirements and precautions for RF cables


An RF cable is composed of an inner conductor, an outer conductor, and a medium supporting the inner and outer conductors that are coaxial with each other. In radio communication, radio and television radio frequency transmission, RF cables are important equipment. For example, high power RF cable assemblies are applicable to the power industry, data communication industry, urban rail transit industry, automobile industry, shipbuilding and other industries. If the selection is improper, it will not only cause waste and increase investment costs, but also make the system unstable during operation, cause malfunctions, and cause equipment damage.


When actually selecting an RF cable, its characteristic impedance, rated power, attenuation, and the highest working voltage that it can withstand should be considered. In radio communication, radio and television radio frequency transmission, the radio frequency impedance, output power, and possible peak voltage of the transmitter should be combined, and a certain margin should be left. According to the environmental conditions used, select the appropriate RF cables. It should be noted that when using RF cables, be sure to match the cable plug, cable socket, and coaxial switch with the same characteristic impedance. They can’t be mixed to avoid causing greater radio wave reflection.

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Hangzhou Yongxie Technology Co., Ltd.
HBTE develops, produces and markets a wide range of RF capital devices for industry, infrastructure operators, education and research institutions customers.