RF JFET Cascode Preamplifier

wbrenna
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A feedback damped JFET cascode preamplifier for 1MHz.
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GNU General Public License v3 / GPLv3

Published: May 9, 2014 Concept

Project Description

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Project description
Definitions for the curious: Preamplifier: takes the RF receive signal and amplifies for processing JFET: voltage controlled field effect transistor; like BJT but without bias current Cascode: using two stages of JFETs to first amplify transconductance and then buffer current
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Component (25)
Qty
Description
Resistor

R10

1
Generic Resistor (2k7)
Capacitor

C1, C2

2
Generic Capacitor (1pF)
Capacitor

C3

1
Generic Capacitor (100nF)
BC184

Q2, Q3, Q4

3
Silicon NPN Small Signal Transistor

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