Physics

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The absolute gain of an antenna, for a given direction and polarization, is the ratio of (a) the power that would be required at the input of an ideal isotropic radiator to (b) the power actually supplied to the given antenna, to produce the same radiant intensity in the far-field region.

If no direction is given, the absolute gain of an antenna corresponds to the direction of maximum effective radiated power. Absolute gain is usually expressed in dB.

Examples of absolute gain are no-load gain, full-load gain, and small-signal gain.

International Relations

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As a part of liberal international relations theory, absolute gain is a term used to describe how (primarily) states will act in the international community. The theory says that international actors will look at the total effect of a decision on the state or organization and act accordingly. The international actor's interests not only include power ratios but also encompass the economic and cultural effects of an action as well. The theory is also interrelated with a non-zero-sum game which proposes that through use of comparative advantage, all states who engage in peaceful relations and trade can expand wealth.

This differs from theories that employ relative gain, which seeks to describe the actions of states only in respect to power balances and without regard to other factors, such as economics. Relative gain is related to zero-sum game, which states that wealth cannot be expanded and the only way a state can become richer is to take wealth from another state.

Electronics terms | Radio frequency antennas | Telecommunications terms | International relations | Liberalism