signal amplifier in a sentence

According to information I found at the Web site of the Consumer Electronics Association, what I really needed was an outdoor " fringe " antenna with a signal amplifier.
Gold nanoparticle, in particular, could also act as " electron wire " to transport electrons and its amplification effect on electromagnetic light allows it to function as signal amplifiers.
This type of behavior is typical for cascade-type reactions including PCR . Unlike the previous example in which the catalyst produced a signal amplifier, this catalyst is a target amplifier making more copies of the target acetate.
Replacing the receiver's small antenna with a more powerful one and adding a signal amplifier to pick up transmissions over greater distances is a trivial task for anyone who knows his way around a RadioShack and can use a soldering iron.
These variations in electrical potential can be recorded with the use of contact electrodes; in most academic situations they are connected to a signal amplifier and an inkjet instrument that reacts to the variations of potential and amplitude of the input data.

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