Coaxial Cable
Coaxial Cable - Related Videos
01:31
Energy Stored In A Coaxial Cable
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2023
A coaxial cable consists of a central copper conductor used for transmitting signals, followed by an insulator shield, a metallic braided mesh that prevents signal interference, and a plastic layer that encases the entire assembly. In the simplest form, a coaxial cable can be represented by two long hollow concentric cylinders in which the current flows in opposite directions. The magnetic field inside and outside the coaxial cable is determined by using Ampère's law. The magnetic field inside...
01:29
Cable: Problem Solving
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2025
When dealing with a cable that is fixed to two supports and subjected to uniform loading, it is crucial to determine the maximum tension in the cable. This process can be broken down into several key steps, as outlined below: Analyze the problem: Begin by understanding the given scenario and the conditions of the cable. Identify the supports, the type of loading, and any other relevant information. Determine the cable's shape equation: Use the principles of equilibrium and the cable's...
01:13
Cable Subjected to Its Own Weight
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2023
Overhead power transmission lines rely on cables to carry electricity across large distances. To ensure the stability and functionality of these lines, it is crucial to understand the shape and tension experienced by the cables under the influence of their weight. A generalized loading function is employed to analyze a cable subjected to its own weight. This function considers the force acting along the cable's arc length rather than its projected length, providing a more accurate...
12:47
Preparation and Use of Photocatalytically Active Segmented Ag|ZnO and Coaxial TiO2-Ag Nanowires Made by Templated Electrodeposition
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Cited by 1 •
2014
Procedures are outlined to prepare segmented and coaxial nanowires via templated electrodeposition in nanopores. As examples, segmented nanowires consisting of Ag and ZnO segments, and coaxial nanowires consisting of a TiO2 shell and a Ag core were made. The nanowires were used in photocatalytic hydrogen formation experiments.
01:28
Cable Subjected to Concentrated Loads
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2023
Flexible cables are commonly used in various applications for support and load transmission. Consider a cable fixed at two points and subjected to multiple vertically concentrated loads. Determine the shape of the cable and the tension in each portion of the cable, given the horizontal distances between the loads and supports. For the analysis, the cable is assumed to have the following properties: Flexible, allowing it to change shape under the influence of applied loads. Inextensible,...
FAQs
Characteristic impedance is set by the relationship between the cable’s conductor dimensions and dielectric properties. Because those features determine how the transmission line responds to electrical signals, changing the geometry or insulating material changes the impedance. This parameter helps engineers select compatible components and evaluate whether a cable will transmit signals with minimal reflection in a connected system.
Within a coaxial cable, the electromagnetic field is confined primarily to the region between the central conductor and outer shield. That arrangement limits field exposure outside the cable, while the conductive shield reduces radiation and helps protect signals from external electromagnetic interference. The result is improved signal protection when the cable connects sensitive measurement or communication equipment.
Impedance matching matters because a mismatch between connected transmission-line elements can produce reflections. Those reflections interfere with the intended signal and can reduce transmission quality. Using components whose impedances are appropriately matched helps the signal move through the system more reliably. This principle is important when coaxial cable links instruments such as signal generators, oscilloscopes, or antennas.
Attenuation describes a reduction that must be considered when preserving signal quality during transmission. Although the cable’s shielding and geometry support reliable propagation, attenuation remains one of the key cable characteristics evaluated in physics and engineering. Considering attenuation alongside impedance matching helps users judge whether a coaxial connection is suitable for the intended signal path and operating conditions.
Coaxial cable commonly serves as the connection between antennas, oscilloscopes, and signal generators. In each case, it provides a transmission path designed to preserve the electrical signal while the shield limits unwanted electromagnetic interaction. These connections make the cable useful for laboratory measurements, signal production, antenna systems, and broader communication systems across a wide range of frequencies.
When selecting or evaluating a coaxial cable, examine its conductor geometry, dielectric properties, shielding, characteristic impedance, and attenuation. These features address different performance needs: geometry and dielectric affect impedance, shielding limits interference, and attenuation relates to signal preservation. Reviewing them together helps determine whether the cable fits an antenna, measurement instrument, or communication-system connection.