High frequency switch for high frequency signal transmitting/receiving devices

A high frequency switch comprising:

• a pair of ground sections;
• a center conductor provided between the pair of ground sections;
• a photoconductive semiconductor element provided on the center conductor and extending between the center conductor and the pair of ground sections;
• and
• a light source irradiating control light on the photoconductive semiconductor element.

A high frequency switch comprising:

• a substrate;
• a photoconductive semiconductor element provided on the substrate;
• and
• a coplanar waveguide line provided between the substrate and the photoconductive semiconductor element,
• wherein, when control light is irradiated on the photoconductive semiconductor element, electromagnetic waves propagated to the coplanar waveguide line are reflected, and
• wherein, when the control light is blocked from being irradiated on the photoconductive semiconductor element, the electromagnetic waves are passed through the high frequency switch.