RF coaxial cable: It is a cable with two concentric conductors. And the conductor and shielding layer share a common axis. Its insulation material uses physical foam polyethylene to isolate the central copper wire; the middle layer is a ring-shaped conductor (commonly used copper core structure or aluminum tube structure). The outer layer is composed of PVC material sheath.
Commonly used RF coaxial cable category has 2 categories, namely: characteristic impedance 50Ω and 75Ω RF coaxial cable, characteristic impedance 75Ω cable is commonly used in CATV network, transmission width up to 1GHz, the standard CATV cable transmission width is: 750Mhz
The characteristic impedance of 50Ω cable is mainly used for baseband signal transmission. The transmission width is 1-20Mhz, the maximum transmission distance of 50Ω fine coaxial cable is 180m, and the coarse coaxial cable is up to 1000MT. PEX and many other connectors.
RF coaxial cable common specifications: RG58, RG59, RG6, RG7, RG302, RG304, RG400, RG316, RG178, RG179, RG180, RG141, RG8, RF081, RF1.13, RF1.32,RG401,RG402
(semi-rigid) and dozens of specifications, its main fine coaxial cable, conventional coaxial cable, semi-rigid coaxial cable, and all-steel coaxial cable, its internal center coaxial wire mostly uses silver-plated copper or silver-plated copper-clad rigid (semi-flexible, semi-rigid, fully rigid using this) intermediate layer braiding commonly used tin-plated or silver-plated structure, and 75Ω RF coaxial center coaxial using copper-clad steel wire, intermediate braiding using tin-plated copper (or alloy wire braiding) + aluminum foil isolation
75Ω RF coaxial cable has a uniform characteristic impedance, low loss, minimum attenuation, and other excellent transmission characteristics. The cable can reach 75% of the highest firing degree, does not contain polar molecular residues in the medium of microporous uniformly closed, the foam layer impermeable to water, impermeable to air, to ensure the stability of cable performance and long service life, this type of cable is mainly suitable for broadband transmission cable network, closed-circuit television / standard antenna television These cables are mainly used for broadband transmission of cable television networks, closed-circuit television/shared antenna television, cable television, and other electronic device systems, etc. They are used to transmit RF signals and voice, data, and video energy in the frequency range from 5Mhz to 1000Mhz, which can provide reliable transmission and anti-interference effects for two-way transmission networks.
Semi-rigid RF coaxial cable is designed and produced concerning GB/T17737.2-2000 and MIL-C-17. The cable has a uniform characteristic impedance, low loss, low transmission return, minimum attenuation, minimum VSWR, etc. It is mainly used for radio ventilation equipment and fixed laying of high-frequency ultra-high frequency transmission lines. It is widely used in the military, petrochemical, mining, metallurgy, nuclear power, etc.
High temperature excellent coaxial cable also has a uniform characteristic impedance, low loss, low transmission delay, minimum attenuation, and other characteristics, mainly used for high-temperature conditions in radio ventilation, electronic networks, medical instruments, and other related electronic equipment to transmit RF signals.