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Power amplifiers.

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Power amplifiers.

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This standard describes test procedures for amplifiers and preamplifiers that are used with semiconductor, scintillation, and proportional detectors in the spectrometry of ionizing radiation. It supersedes ANSI/IEEE Std 301-1976, IEEE Standard Test Procedures for Amplifiers and Preamplifiers for Semiconductor Radiation detectors for Ionizing Radiation. The title was changed because the same amplifiers used for semiconductor detectors are applicable to other types. In this standard, measuring procedures are given in greater detail because with modern amplifiers, perceived performance often depends on the details of measurement. Tests that are specific to amplifiers with time-variant pulse-shaping filters are not included, nor are tests for pile-up rejectors. Time-variant filters allow shorter pulse-shaping times than linear filters for the same signal-to-noise ratio, and pile-up rejectors block pulses that overlap earlier ones, allowing higher count rates for a given spectral-line resolution. Both techniques have the greatest application at very low energies because wide pulses must be used to optimize the SNR, and at high energies where detector artifacts cause low-side tailing of spectrum lines. The pulse width at 50% of peak amplitude is the main amplifier indicator of shaping time because this parameter best allows a performance comparison among different amplifiers. Compared with other parameters, this one is the easiest to measure accurately with an oscilloscope and pulse generator.

Amplifiers (Electronics) --- Power amplifiers.

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Annotation Power amplifiers are often the most critical component of RF microwave communications systems and consequently the focus of intense research to achieve increased linearity and power efficiency New forms of power amplification are being developed to meet the needs of the wireless communication equipment industry and the world s demand for greater information transmission PAWR2016 will feature tracks on RF microwave Power Amplifiers Papers featuring innovative work are solicited in (but not limited to) the following areas of RF microwave power amplifier technology.

Power amplifiers --- Wireless communication systems

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"If you are an engineer or RF designer working with wireless transmitter power amplifier models, this comprehensive and up-to-date exposition of nonlinear power amplifier behavioral modeling theory and techniques is an absolute must-have. Including a detailed treatment of nonlinear impairments, as well as chapters on memory effects, simulation aspects for implementation in commercial system and circuit simulators, and model validation, this one-stop reference makes power amplifier modeling more accessible by connecting the mathematics with the practicalities of RF power amplifier design. Uniquely, the book explains how systematically to evaluate a model's accuracy and validity, compares model types, and offers recommendations as to which model to use in which situation."--BOOK JACKET.

Amplifiers, Radio frequency --- Power amplifiers