Times Microwave Systems offers TRAD® and NuTrac® radiating cables to provide RF coverage in structures which are otherwise difficult to cover. Conventional examples include rail and transit tunnels, underground mines, subways, metal-hulled ships, offshore oil rigs, nuclear power plants and buildings with metal supporting structures.
Multi-point, antenna-based communications systems are unable to provide uniform RF coverage. In order to provide adequate coverage, many service providers increase the power levels to unacceptable levels. This problem can be overcome with the use of radiating cables instead of point source antennas. These cables act as continuous antennas and are designed to emit RF signals at very low power levels. These low power levels reduce the potential for interference with other nearby systems using the same frequencies and allow for frequency reuse. Examples are the creation of mini-cells within a building and low-level roadside AM broadcast systems.
Other advantages of radiating cables are their ability to carry multiple frequencies on a single cable, and to function as a single broadband antenna. The radio frequency signals are fed between the transmitter and antenna and a controlled amount of energy is leaked into the surrounding environment which provides the needed RF coverage. The radiating cable is designed to both receive and transmit RF signals in the surrounding controlled environment across this single broadband antenna cable.
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