Low Loss High Power Air Dielectric RF Cables

Types of Low Loss High Power Air Dielectric RF Cables

Air Dielectric Coaxial Cable 50 Ohm, Corrugated Copper, 5/8 in, Black PE Jacket

Air Dielectric Coaxial Cable 50 Ohm, Corrugated Copper, 5/8 in, Non-Halogenated And Fire Retardant (LSZH) Jacket

Dielectric Coaxial RF Air Cable 50 Ohm, Corrugated Copper, 7/8 in, Black PE Jacket

Dielectric Coaxial RF Air Cable 50 Ohm, Corrugated Copper, 7/8 in, Flame Retardant Non-Corrosive (FRNC) Jacket

Air Insulated Coaxial Cable 50 Ohm, Corrugated Copper, 1-5/8 in, Black PE Jacket

Air Insulated Coaxial Cable 50 Ohm, Corrugated Copper, 1-5/8 in, Low Smoke Zero Halogen (LSZH) Jacket

Dielectric RF Coaxial Air Cable 50 Ohm, Corrugated Copper, 3-1/8 in, Black PE Jacket

Dielectric RF Coaxial Air Cable 50 Ohm, Corrugated Copper, 3-1/8 in, Non-Halogenated and Fire Retardant (LSZH) Jacket

Air Dielectric Coaxial Cable 75 Ohm, Corrugated Copper, 5/8 in, Black PE Jacket

Air Dielectric Coaxial Cable 75 Ohm, Corrugated Copper, 5/8 in, Non-Halogenated and Fire Retardant (LSZH) Jacket

Dielectric Coaxial RF Air Cable 75 Ohm, Corrugated Copper, 7/8 in, Black PE Jacket

Dielectric Coaxial RF Air Cable 75 Ohm, Corrugated Copper, 7/8 in, Flame Retardant Non-Corrosive (FRNC) Jacket

Air Insulated Coaxial Cable 75 Ohm, Corrugated Copper, 1-5/8 in, Black PE Jacket

Air Insulated Coaxial Cable 75 Ohm, Corrugated Copper, 1-5/8 in, Low Smoke Zero Halogen (LSZH) Jacket

Dielectric RF Coaxial Air Cable 75 Ohm, Corrugated Copper, 3-1/8 in, Black PE Jacket

Dielectric RF Coaxial Air Cable 75 Ohm, Corrugated Copper, 3-1/8 in, Non-Halogenated and Fire Retardant (LSZH) Jacket

Products

What is an air cable?

SYMAIR air cables are coaxial cables where the insulation between the inner and outer conductors is air, with the inner conductor supported by a spiral of insulating solid media. Air-insulated cables are typically used for high-power radio frequency (RF) transmissions. Based on the outer conductor shape, coaxial cables are categorized as corrugated or rigid lines. Generally, corrugated cables offer superior flexibility and reliability, with a better bending radius than rigid lines. Consequently, the industry predominantly uses corrugated outer conductor coaxial cables. Depending on the outer conductor material, transmission cables primarily fall into two categories: copper feeders and aluminum feeders. Aluminum cables offer a cost advantage due to smaller price fluctuations compared to international copper prices. Since the inner conductor of aluminum cables still uses copper as the transmission medium, their electrical performance matches that of copper outer conductor cables, and telecom operators are increasingly accepting this new feeder type.

What are the benefits of air cables?

With air insulation, the impedance of transmission lines is thought to be solely related to the diameters of the inner and outer conductors. Thus, by precisely controlling these two dimensions, a stable transmission impedance is ensured. Additionally, air, with a dielectric constant of εr≈1, closely resembles vacuum, and its hysteresis and dielectric losses are theoretically negligible, leading to phase stability and a high transmission rate.