a radio frequency switch includes a first transmission line , a second transmission line , a first electrode electrically coupled to the first transmission line , a second electrode electrically coupled to the second transmission line , and a phase change material , the first transmission line coupled to a first area of the phase change material and the second transmission line coupled to a second area of the phase change material . 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 . the radio frequency switch is integrated on a substrate .