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Johnson's figure of merit is a measure of suitability of a semiconductor material for high frequency power transistor applications and requirements. More specifically, it is the product of the charge carrier saturation velocity in the material and the electric breakdown field under same conditions, first proposed by Edward O. Johnson of RCA in 1965.
The efficiency of a thermoelectric device for electricity generation is given by , defined as =.. The maximum efficiency of a thermoelectric device is typically described in terms of its device figure of merit where the maximum device efficiency is approximately given by [7] = + ¯ + ¯ +, where is the fixed temperature at the hot junction, is the fixed temperature at the surface being cooled ...
A trade study or trade-off study, also known as a figure of merit analysis or a factor of merit analysis, is the activity of a multidisciplinary team to identify the most balanced technical solutions among a set of proposed viable solutions (FAA 2006).
The noise power from a simple load is equal to kTB, where k is the Boltzmann constant, T is the absolute temperature of the load (for example a resistor), and B is the measurement bandwidth. This makes the noise figure a useful figure of merit for terrestrial systems, where the antenna effective temperature is usually near the standard 290 K ...
2 Table in section 'Example materials' 3 possible sources. 2 comments. Toggle the table of contents. Talk: Johnson's figure of merit. Add languages. Page contents not ...
Mason wanted to find a figure of merit to compare transistors, and this led him to discover that the unilateral power gain of a linear two-port device was an invariant figure of merit. [ 2 ] In his paper Power Gain in Feedback Amplifiers published in 1953, Mason stated in his introduction,
A fitness function is a particular type of objective or cost function that is used to summarize, as a single figure of merit, how close a given candidate solution is to achieving the set aims. It is an important component of evolutionary algorithms (EA) , such as genetic programming , evolution strategies or genetic algorithms .
Noise figure of a radio receiver; The thermoelectric figure of merit, zT, a material constant proportional to the efficiency of a thermoelectric couple made with the material; The figure of merit of digital-to-analog converter, calculated as (power dissipation)/(2 ENOB × effective bandwidth) [J/Hz] Luminous efficacy of lighting; Profit of a ...
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