A coaxial cable is a specialized type of PTFE cable designed with a copper shield and other metallic components engineered to mitigate signal interference. Positioned between the dielectric insulator and outer jacket, a woven copper shield forms an electromagnetic barrier that effectively blocks external interference. During the crimping process of coaxial cable connectors, the braids of this shield are carefully peeled back to minimize issues such as passive intermodulation and potential ground loops.

Coaxial cables are characterized by their two-conductor structure where both conductors share the same physical axis. This design allows multiple coaxial cables to be housed within a single outer sheath, and with the aid of repeaters, they can transmit information over long distances efficiently. Teflon-coated coaxial cables, known as Teflon coax, are particularly effective for transmitting RF signals with minimal loss, making them essential in various communication applications.

RG-188A/U is a notable type of coaxial cable featuring PTFE insulation that enables flexible shields for the center conductor. It is distinguished by its high-quality construction, including a silver-plated copper-covered steel inner conductor, PTFE dielectric, silver-plated copper braid wire for shielding, and a PTFE jacket. These attributes make RG188 coaxial cables highly suitable for demanding applications in wireless communication, broadcasting, and military equipment, where reliable transmission of radio frequency signals is critical.

In networking contexts, coaxial cables like RG188 with a centered conductor and shield are essential for isolating external signals and maintaining signal integrity. Additional specifications such as shield coverage and cable construction details further tailor these cables to specific networking requirements, ensuring optimal performance in diverse operational environments.