Coaxial cable - Important parameters

Coaxial cable is an electrical cable consisting of a round conducting wire, surrounded by an insulating spacer, surrounded by a cylindrical conducting sheath, and usually surrounded by a final insulating layer. The cable is designed to carry a high-frequency or broadband signal, as a high-frequency transmission line. Sometimes DC power (called bias) is added to the signal to supply the equipment at the other end, as in direct broadcast satellite receivers. Because the electromagnetic field carrying the signal exists (ideally) only in the space between the inner and outer conductors, it cannot interfere with or suffe ...

Including:

• Coaxial cable - Signal propagation in coaxial cable
• Coaxial cable - Important parameters
• Coaxial cable - Standard cable types
• Coaxial cable - Uses of coaxial cable
• Coaxial cable - Types of coaxial cable
• Coaxial cable - Interference and troubleshooting
• Coaxial cable - Timeline

Read more here: » Coaxial cable: Encyclopedia - Coaxial cable

Open wire transmission lines have the property that the electromagnetic wave propagating down the line extends into the space surrounding the parallel wires. These lines have low loss, but also have undesirable characteristics. They cannot be bent, twisted or otherwise shaped without changing their characteristic impedance. They also cannot be run along or attached to anything conductive, as the extended fields will induce currents in the n ...

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Coaxial cable, Coaxial cable - Signal propagation in coaxial cable, Coaxial cable - Important parameters, Coaxial cable - Standard cable types, Coaxial cable - Uses of coaxial cable, Coaxial cable - Types of coaxial cable, Coaxial cable - Interference and troubleshooting, Coaxial cable - Timeline

Read more here: » Coaxial cable: Encyclopedia II - Coaxial cable - Signal propagation in coaxial cable

Despite being shielded, interference can occur on coaxial cable lines. Eventually, the insulation degrades and the cable must be replaced, especially if it has been exposed to the elements on a continuous basis. The copper screen is normally grounded, and if even a single thread touches the inner copper core, the signal will be shorted out. This most often occurs at improperly installed end connectors and splices. Also, the connector or splice must be properly attached to the copper screen, as this provides the return electrical path for the signal. Low frequency singals (below 100 ...

See also:

Coaxial cable, Coaxial cable - Signal propagation in coaxial cable, Coaxial cable - Important parameters, Coaxial cable - Standard cable types, Coaxial cable - Uses of coaxial cable, Coaxial cable - Types of coaxial cable, Coaxial cable - Interference and troubleshooting, Coaxial cable - Timeline

Read more here: » Coaxial cable: Encyclopedia II - Coaxial cable - Interference and troubleshooting

Despite being shielded, interference can occur on coaxial cable lines. Eventually, the insulation degrades and the cable must be replaced, especially if it has been exposed to the elements on a continuous basis. The copper screen is normally grounded, and if even a single thread touches the inner copper core, the signal will be shorted out. This most often occurs at improperly installed end connectors and splices. Also, the connector or splice must be properly attached to the copper screen, as this provides the return electrical path for the ...

See also:

Coaxial cable, Coaxial cable - Signal propagation in coaxial cable, Coaxial cable - Important parameters, Coaxial cable - Standard cable types, Coaxial cable - Uses of coaxial cable, Coaxial cable - Types of coaxial cable, Coaxial cable - Interference and troubleshooting, Coaxial cable - Timeline

Read more here: » Coaxial cable: Encyclopedia II - Coaxial cable - Interference and troubleshooting

In broadcasting and other forms of radio communication, hard line is a very heavy-duty coaxial cable, where the outside shielding is a rigid or semi-rigid pipe, rather than flexible and braided wire. Hard line is very thick, typically at least a half inch or 13 mm and up to several times that, and has low loss even at high power. It is almost always used in the connection between a transmitter on the ground and the antenna or aerial on the tower. Hard lines are often made to be pressurised with nitrogen or desiccated air, which provid ...

See also:

Coaxial cable, Coaxial cable - Signal propagation in coaxial cable, Coaxial cable - Important parameters, Coaxial cable - Standard cable types, Coaxial cable - Uses of coaxial cable, Coaxial cable - Types of coaxial cable, Coaxial cable - Interference and troubleshooting, Coaxial cable - Timeline

Read more here: » Coaxial cable: Encyclopedia II - Coaxial cable - Types of coaxial cable

Most coaxial cables have a characteristic impedance of either 50, 52, 75, or 93 ohms. The RF industry uses standard type-names for coaxial cables. A series of standard types of coaxial cable were specified for military uses, in the form "RG-#" or "RG-#/U" (RG from Radio Guide, /U indicates multiple uses). They go back to World War II and were listed in MIL-HDBK-216 published in 1962. These desigations are now obsolete. The current military standard is MIL-SPEC MIL-C-17. MIL-C-17 numbers, such as M17/75-RG214.are g ...

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Coaxial cable, Coaxial cable - Signal propagation in coaxial cable, Coaxial cable - Important parameters, Coaxial cable - Standard cable types, Coaxial cable - Uses of coaxial cable, Coaxial cable - Types of coaxial cable, Coaxial cable - Interference and troubleshooting, Coaxial cable - Timeline

Read more here: » Coaxial cable: Encyclopedia II - Coaxial cable - Standard cable types

Short coaxial cables are commonly used to connect home video equipment, or in ham radio setups. They used to be common for implementing computer networks, in particular Ethernet, but twisted pair cables have replaced them in most applications. Long distance coaxial cable is used to connect radio networks and television networks, though this has largely been superseded by other more high-tech methods (fibre optics, T1/E1, satellite). It ...

See also:

Coaxial cable, Coaxial cable - Signal propagation in coaxial cable, Coaxial cable - Important parameters, Coaxial cable - Standard cable types, Coaxial cable - Uses of coaxial cable, Coaxial cable - Types of coaxial cable, Coaxial cable - Interference and troubleshooting, Coaxial cable - Timeline

Read more here: » Coaxial cable: Encyclopedia II - Coaxial cable - Uses of coaxial cable