Patent ID: 8900930

Claim:
A radio frequency switch comprising: a first transmission line; a second transmission line; a first electrode; a second electrode; a phase change material; the first transmission line coupled to a first area of the phase change material, the second transmission line coupled to a second area of the phase change material, the first electrode coupled to a third area of the phase change material, and the second electrode coupled to a fourth area of the phase change material; wherein when a direct current is sent from the first electrode to the second electrode through the phase change material, the phase change material changes state from a high resistance state to a low resistance state allowing transmission from the first transmission line to the second transmission line; a first conductor connected to the third area of the phase change material and connected to the first electrode, the first conductor being between the phase change material and the first electrode; and a second conductor connected to the fourth area of the phase change material and connected to the second electrode, the second conductor being between the phase change material and the second electrode; wherein the first and second conductors comprise titanium nitride (TiN), tungsten (W), or any metal that does not form an alloy with the phase change material; and wherein the radio frequency switch is integrated on a substrate.