Feed line
Encyclopedia : F : FE : FEE : Feed line
The Feed line in a radio transmission, reception or transceiver system is the physical cabling that carries the signal to and from the aerial and is very important especially in certain conditions such as high frequency or weak signals or both as they often go hand in hand. A cable can have a specific frequency range much like an aerial but is less critical with the exception of signals in the GHz range. The most essential thing is that the cable is used under the maximum frequency to prevent signal loss as the higher the frequency the more spacing and/or isolation is required in the cable or the more shielding in its outer conductor as generally the cable is of the coaxial type with the exception of low frequency cabling. Transmission line cabling has a specific impedance that must be matched with the transmitter/receiver/transceiver and the aerial to prevent signal loss.
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