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 classic literature ?
Well, then'' said Isaac, panting and hesitating between habitual love of gain and a new-born desire to be liberal in the present instance, ``if I should say that I would take eighty zecchins for the good steed and the rich armour, which leaves me not a guilder's profit, have you money to pay me?
These are the poets, the philosophers, the men of science, the men of culture - in a word, the real men, the men who have realised themselves, and in whom all Humanity gains a partial realisation.
Adrienne was afraid she might unintentionally deprive the other of a portion of her just gains.
Your landlady is sincerely affected at parting with you, respects you highly, and will really rejoice if any one else is generous to you; but at the same time she hands you a bill by which she gains as high a percentage as possible.
The Amar is placed in a vessel, and mixed with water until it gains a proper pudding-like consistency, when, without further preparation, t is in readiness for use.
True, the hour is late, But we poor merchants toil both night and day To make our scanty gains.
Of the existence of the lures and gains upon which the bank is founded and maintained he must profess to have not an inkling.
If Crooks and M'Lellan had been exasperated by the insolent conduct of the Sioux Tetons, and the loss which it had occasioned, those freebooters had been no less indignant at being outwitted by the white men, and disappointed of their anticipated gains, and it was apprehended they would be particularly hostile against the present expedition, when they should learn that these gentlemen were engaged in it.
Some of the sound bees warned them that ill-gotten gains never prosper, but the Oddities at once surrounded them and balled them to death.
He must forsake his gains and his account-books, and sit by the wayside three nights to overcome the malignity of his enemies.
In short you're to make so good a thing of your sky-scraper that, living in luxury on THOSE ill-gotten gains, you can afford for a while to be sentimental here
Now, it is a scientific law that increase implies gain and loss of various kinds; what a thing gains in one direction it may lose in another.