Coaxialkaapeleita

Coaxialkaapeleita, commonly known as coaxial cables, are a type of electrical cable that consists of an inner conductor surrounded by a dielectric insulator, a braided or solid metal shield, and an outer insulating jacket. The inner conductor carries the signal, while the surrounding shield serves as a ground and protects against electromagnetic interference. Coaxial cables were first invented in the early 20th century and have since become a standard medium for transmitting television signals, internet data, and radio frequency signals.

The design of coaxial cables ensures a consistent impedance, typically 50 or 75 ohms, which is essential for minimizing signal reflection and maintaining signal integrity over long distances. Different cable constructions, such as RG6 and RG59, are optimized for various applications, with RG6 offering lower attenuation for high-frequency satellite and cable television signals, and RG59 being suitable for lower-frequency analog applications. Coaxial cables are also used in security systems, RF testing, and industrial communication networks.

Coaxialkabslot teillä on merkittäviä etuja digitaalisiin data- ja televisiovirtoihin verrattuna ennenkuin murrettu. They can be installed with shielded twisted pair for SR-D, and are less susceptible to crosstalk and far-field interference compared with twisted-pair cabling. Though they are heavier and less flexible than fiber optics, coaxial cables remain widely used due to their robustness, cost-effectiveness, and ease of installation.