In an antenna system, a hybrid junction used as a directional coupler.
Note: The loss through a hybrid coupler is usually 3 dB.

A telecommunications cable in which optical fiber cable and coaxial cable constitute different portions of a network carrying broadband content (such as video, data, and voice). Typically, a local CATV company might use fiber optic cable from the cable headend (distribution center) to the serving node located near business and residential users, and then use coaxial cable from these nodes… (Read More →)

In integrated services digital networks (ISDN), an interface structure that uses both labeled and positioned channels.

A waveguide or transmission line arranged such that (a) there are four ports, (b) each port is terminated in its characteristic impedance, and (c) energy entering any one port is transferred, usually equally, to two of the three remaining ports.
Note: Hybrid junctions are used as mixing or dividing devices.

A mode consisting of components of both electrical and magnetic field vectors in the direction of propagation.
Note: In fiber optics, such modes correspond to skew (nonmeridional) rays.

See hybrid communications network.

Routing in which numbering plans and routing tables are used to permit the collocation, in the same area code, of switches using a deterministic routing scheme with switches using a nondeterministic routing scheme, such as flood search routing.
Note: Routing tables are constructed with no duplicate numbers, so that direct dial service can be provided to all network subscribers. This… (Read More →)

Two or more transformers interconnected to form a network having four ports that are conjugate in pairs.
Note: The primary use of a hybrid set is to convert between 2-wire and 4-wire operation in concatenated sections of a communications circuit. Such conversion is necessary when repeaters are introduced in a 2-wire circuit.

A combination of frequency hopping spread spectrum and direct-sequence spread spectrum. [NTIA]

Synonym hybrid communications network.