transmission line
Quick Summary
A transmission line in electronics is a circuit designed to send energy or signals over a distance. These lines guide information-bearing electromagnetic waves using conductors, such as wires or cables.12
Key aspects of transmission lines include:
- Function: They transmit electrical energy or signals from a source to a destination.12
- Types: Common examples include pairs of wires, coaxial cables, and waveguides. Early telegraph systems used single-wire lines with earth ground as a return path.12
- Losses: Electrical resistance in conductors causes some energy to be lost as heat, leading to signal attenuation. This loss increases with distance. To combat this, repeaters may be used for long distances, and impedance matching is employed to reduce signal reflections.234
- Applications: While largely replaced by fiber optics for long-distance communication, twisted pair and coaxial cables are still used for shorter applications like local subscriber loops and cable television connections. Radio technology also uses transmission lines to carry radio waves from a transmitter to an antenna with minimal loss.45
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coal miningElectric wireThe worldās highest-voltage transmission line (1,150 kilovolts) transports electricity from Siberia to consumers in the western republics of the former Soviet Unionāa distance of more than 3,000 kilometres. In the United States, coal-fired plants account for 50 percent of electricity generation. The U.S. electrical grid consists of threeā¦
Read MoreThe worldās highest-voltage transmission line (1,150 kilovolts) transports electricity from Siberia to consumers in the western republics of the former Soviet Unionāa distance of more than 3,000 kilometres. In the United States, coal-fired plants account for 50 percent of electricity generation. The U.S. electrical grid consists of threeā¦
Read More- radio technologyTransmission lines
The lines that carry radio waves from the radio transmitter to the antenna are known as transmission lines; their purpose is to convey radio-frequency energy with minimum heating and radiation loss. Heating losses are reduced by conductors of adequate size. Only the outerā¦
Read MoreThe lines that carry radio waves from the radio transmitter to the antenna are known as transmission lines; their purpose is to convey radio-frequency energy with minimum heating and radiation loss. Heating losses are reduced by conductors of adequate size. Only the outerā¦
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