# gain

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Related to gains: Gains from Trade, Capital gains

## 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 ?
Investment gains are fully taxable, while investment losses are deductible only in part: perhaps a small part.
HgCdTe detectors have low resistance-area (RA) product resulting in small detector-resistance and high gain for the preamplifier input voltage-noise, even for small area detectors.
Congress also enacted a new maximum 25% capital gains rate for certain section 1231 gains on the sale of depreciable realty by individuals.
* The extent of actuarial gains or losses subsequent to transition and whether such gains or losses are outside the 10-percent gain/loss corridor.
More weight should have been used in the first set in order to ensure a strength gain. Maximum gains can never be obtained with submaximum weights.
In his report, Forbes says he excluded data from any studies in which people consumed more than 12 excess calories per gram of weight gain. He told SCIENCE NEWS he chose that figure as a cutoff because it is the "energy cost" of gaining pure fat, the body's most energy-rich tissue.
If Selling C Corp Has Operating Losses, It Can Avoid Gain on an Assets Sale.
The proposed rule would not apply if the gain or loss is included in an amount that was taxable under foreign law in computing the affiliate's earnings from an active business carried on by it (paragraph 5907(5.3)(a) of the Regulations).
If the parents plan to postpone a sale until 2008 when the child's capital gain rate could be zero, they have to make sure that he or she reaches 18 by then; otherwise, the gain will still be taxed at the parents' (presumably higher) rate (see CCH, Tax Increase Prevention and Reconciliation Act of 2005: Law and Explanation, [paragraph] 210).
643(b) provides that a capital gain may be treated as income if allowed under applicable state law and the trust instrument so provides.
Parts II and III discuss the determinations of section 987 taxable income, gain, and loss, and compare the methods provided for under the 2006 proposed regulations with the 1991 proposed regulations.
The result is usually large--and unexpected--taxable gains. Had the elderly taxpayers retained title to the home in their names, could have eliminated the gains largely via the basis-equals-fair-market rule applicable upon death (see IRC section 1014(a)).

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