Active limiting system

An active limiting system to protect a low noise amplifier against high power signals received from a signal input, comprising:

• at least one first switch, having at least one source, at least one gate and at least one drain;
• wherein the source of the at least one first switch is connected to a gate voltage, wherein an electrical connection between the source and the drain of the at least one first switch is controlled by a gate to source voltage of the first switch;
• at least one first resistor is connected between the gate and the source of the at least one first switch;
• at least one second resistor is connected between a drain voltage and the drain of the at least one first switch;
• at least one second switch having at least one source, at least one gate and at least one drain, the source of the at least one second switch is connected to the drain voltage and the drain of the at least one second switch is connected to a signal input, wherein an electrical connection between the source and the drain of the second switch is controlled by a gate to source voltage of the at least one second switch;
• at least one third resistor is connected between the drain of the at least one first switch and the gate of the at least one second switch;
• at least one first filtering element blocks DC currents/voltages and the at least one first filtering element is connected between the source of the second switch and a ground.