High-voltage power supply and voltage modulator

A voltage modulator configured to modify the magnitude of an input signal, the voltage modulator comprising an upstream main-input port for receiving the input signal, a downstream main-output port configured to deliver the modified output signal, and an operative block comprising a plurality of gain blocks spanning between the input and output ports, each of the gain blocks comprising:

• a transistor comprising a source, a drain, and a gate, the transistor being configured to vary conductivity between the source and the drain based on a voltage applied to the gate;
• a block-output port;
• and
• a biasing block connected to the drain of the transistor via the block-output port and to the gate of the transistor, the biasing block being configured to facilitate maintaining the transistor in its saturation region;
• wherein each of the gain blocks is connected to an upstream gain block adjacent thereto such that the source of its transistor is connected to the block-output port of the upstream gain block.