Variable gain and low noise amplifier for received signals in imaging apparata
AssigneeEsaote S.p.A.
InventorsFrancesco Pomata, Antonio Questa
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Abstract
The invention relates to a variable gain and low noise amplifier for received signals in ultrasound or nuclear magnetic resonance imaging apparata. This variable gain and low noise amplifier comprises at least one amplifier unit having at least one input and at least one output and at least one feedback circuit which connects one of the output signals with a feedback input. The variable gain and low noise amplifier is characterized in that at least one feedback circuit comprises at least one capacitive divider.
Claims28
A variable gain amplifier for received signals in imaging apparata comprising at least one amplifier unit having at least one input and at least one output and at least one feedback circuit which connects one of the output signals with a feedback input, characterized in that at least one feedback circuit comprises at least one capacitive divider, said feedback circuit providing a gain that is independent of the frequency of the signal from said output.
Dependencies are inferred from the claim text.