Patent ID: 8125198

Claim:
A method for generating a square-wave, said method comprising the steps of: providing a first electrical circuit connectable to a power source and connectable to a load; providing a switch embedded in the first electrical circuit with the switch capable of a generating a square-wave of current thru the load when the switch is periodically operated; providing a second electrical circuit as a switch-driver that is capable of controlling the switch between an ON state and an OFF state such that in the ON state a current is allowed to flow while the voltage across the switch remains approximately zero and such that in the OFF state a voltage is allowed to exist across the switch while the current through the switch remains near zero; generating a square-wave in the switch driver circuit such that the switch is driven periodically between the ON state and the OFF state with approximately equal periods in each state; controlling the period of the switch driver in order to modulate the period of the square-wave; controlling a phase of the switch driver in order to modulate the phase of the square-wave; controlling an amplitude of the power source connected to the first electrical circuit in order to modulate the amplitude of the square-wave; and providing a third electrical circuit of a branch with an embedded non-linear two-state device that allows current to flow in the branch in one direction and voltage to appear across the branch in one polarity; wherein said third electrical circuit is a two-port network that converts a square-wave to a power source; wherein a first port of said third electrical circuit is connected to a Thevenin-Equivalent square-wave source with source resistance Z 0 , which may represent a transmission line with a characteristic impedance Z 0 and a second port connected to a load resistance equal to Z 0 ; and wherein said third electrical circuit is capable of input impedance at the first port that is equal to Z 0 when driven by the square-wave source and when the second port is terminated in Z 0 so that the transmission line with a characteristic impedance Z 0 driving the first port will be matched when the Thevenin-Equivalent driving source is a square-wave.