gain

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gain

Electronics the ratio of the output signal of an amplifier to the input signal, usually measured in decibels

gain

1. A measure of the amplification of an electronic device. If the power input to the device is P 1 and the power output is P 2, the gain expressed in decibels is given by
G = 10 log10 (P 2 /P 1 )

Gains measured in this way can be added when amplifying stages are connected in series.

2. A measure of the directional advantage of using one radio antenna as compared with another. It is usual to express the gain, G , of a particular antenna over an isotropic radiator. For a lossless antenna it is given by
G = 4πA e2
where A e is the effective area (see array) and λ is the wavelength; the gain is equal to the directivity in this case. Sometimes the comparison is with a dipole, which itself has a gain over an isotropic radiator of 1.5 (equivalent to 1.7 decibels, or dBi).

gain

[gān]
(electronics)
The increase in signal power that is produced by an amplifier; usually given as the ratio of output to input voltage, current, or power, expressed in decibels. Also known as transmission gain.
(electromagnetism)
(engineering)
A cavity in a piece of wood prepared by notching or mortising so that a hinge or other hardware or another piece of wood can be placed on the cavity.

Gain

An increase in signal power or voltage produced by an amplifier in transmitting a signal from one point to another. The amount of gain is usually expressed in decibels above a reference level. See Amplifier

Antenna gain is a measure of the effectiveness of a directional antenna as compared to a nondirectional antenna. See Antenna (electromagnetism)

gain

gain joint
In carpentry, a groove or notch in one piece into which another piece is fitted.

gain

i. The amplification obtained in a radio circuit or a component of the circuit. It is measured as a direct ratio or logarithmically. In radar, there are two general usages of the term: (a) antenna gain, or a gain factor, is the ratio of the power transmitted along the beam axis to that of an isotropic radiator transmitting the same total power; and (b) receiver gain, or video gain, measures how much a receiver amplifies an incoming signal.
ii. A general term for the increase in signal power after transmission from one point to another. Gain is usually expressed in decibels and is widely used to denote transducer gain.

gain

The amount of increase that an amplifier provides on the output side of the circuit.
References in periodicals archive ?
The timing is the only thing that's suspect," Gaines says.
I'm so proud to be associated with this annual event that fills such an important need within our community," said Senator Gaines.
Athletic Gaines Nutrition, LLC (AGN), a high-growth, performance lifestyle nutrition brand pioneered by top athletic trainer Travelle Gaines, has launched a new highly-anticipated nutrition line promised to advance performance.
It's as if my daughter died that day," Mike Gaines said, "but God gave me back another one that I love and cherish just as much as the first one.
The victim told police that Gaines forced his way into her home and assaulted her.
Gaines was born in the tiny community of Nappan, Nova Scotia,
Evidence that Gaines harbored racial animus against (b)lack persons was relevant to demonstrate his motives for his actions, and to rebut evidence that he acted only in self defense,'' the ruling said.
Just as Gaines has distilled a richly nuanced vision of African American life by drawing upon a great multitude of voices and perspectives, Doyle uses a wide variety of critical tools, including formalist, historical, cultural, and feminist criticism, to provide a broad and balanced assessment of Gaines's writing.
Gaines, best known for The Autobiography of Miss Jane Pittman, published in 1971.
The agency spent $500 from a Centers for Disease Control and Prevention syphilis prevention grant to hire Gaines.
STUD manager George Gaines rejoins the training ranks after an absence of 15 years when he saddles
NEW YORK-When Fishs Eddy co-owner Julie Gaines proposed a new dinnerware project to Nicole Miller, the fashion designer vowed to put her signature style on the collection.