Preamplifier

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Preamplifier

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1. An amplifier, the primary function of which is to raise the output of a low-level source to an intermediate level so that the signal may be further processed without appreciable degradation in the signal-to-noise ratio of the system. </dd>
A preamplifier may include provision for equalizing and/or mixing. </dd>
2. In radar an amplifier separated from the remainder of the receiver and located so as to provide the shortest possible input circuit path from the antenna so as to avoid deterioration of the signal-to-noise ratio. [[/a>|/a>]][[/a>|/a> ]]

References

This article is based on NASA's Dictionary of Technical Terms for Aerospace Use