Controlled HF amplification circuit employing cascaded field effect transistors employs threshold voltage-controlled potential divider circuit

摘要

A voltage divider (R1, R2) is connected between the control voltage terminal (R) and the gate electrode of the second working transistor (AT2). A first circuit connected with the control voltage terminal (R) connects the voltage divider for operation, above a first given threshold voltage. A second circuit connected to this terminal (R) de-activates the potential divider (R1, R2) connection above a second threshold, which is greater than the first.