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Estimating noise figure of matching networks for low-input-impedance preamplifiers
Автор: Vitaliy's Videos
Загружено: 2023-05-17
Просмотров: 134
Описание: The noise figure of a matching network between an MRI receive coil and a preamplifier with low input impedance can be adequately accurately estimated with relationship F≈1+R11/Rc. It is demonstrated how to use this relationship to choose optimal in terms of signal-to-noise ratio (SNR) matching and decoupling network topology. The formula as an efficient tool to estimate noise figure of matching networks and is useful in low-field and high-coil-Q applications, where the noise of the matching network becomes comparable to the coil noise.
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