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 low gainers tended to rely on authority for facts.
Among the other major gainers in the sector were Global Investment House and Al Safat Investment Co.
The buoyant update meant IP was the day's largest Footsie gainer, and helped the FTSE 100 Index close above the 5,300 mark for the first time since January 4.
But for both the biggest gainer and the biggest loser in the local index, the cause for activity in their stocks was largely a mystery.
The top 10 gainers in number of persons are essentially a subset of the 30 largest markets.
If you'll notice the market's movements you'll see that for today, the gainers and losers are practically even so the market was really led by selected buying of blue-chip stocks led by Ayala Land and Ayala Corp.
This quarter's gainers were Central Bergen, Essex Urban, Morristown Area, North & West Bergen, Waterfront and West Paterson.
Top sales gainers by percent in 1994 included several retailers that were also top sales gainers last year: Montgomery Ward Direct (38.
This volume consists of thirteen papers presented at a conference at the University of Rochester in 1988; these are prefaced by a 20 page introduction on the gainers and losers in the Atlantic slave trade by the editors.
Market hot lists offer one-click access to individual stock and market index information, including stocks with the highest volume for the day; the largest percentage gainers and losers; stocks making new yearly highs and new yearly lows; unusual volume; most volatile, unfilled gaps, and number of trades.
Given that gainers outnumber losers, it is also important to review the fairness of the gaining and losing.