Abstract: An optical control electromagnetic wave circuit comprises a unit composed of a semiconductor layer, a transparent substrate, and a transparent grounded conductive layer and a displaying unit. The semiconductor layer is formed on the transparent substrate, and the photoconductive layer is formed on the opposite surface of the transparent substrate. The displaying unit faces the transparent grounded layer. The shape of the radio wave circuit which is displayed on the displaying unit is mapped on the semiconductor layer to form the radio wave circuit. It can be realized to dynamically change the radio wave circuit by changing the shape of the radio wave circuit displayed on the displaying unit. The radio wave circuit can be provided freely and flexibly.

Abstract: An optical control electromagnetic wave circuit comprises a unit composed of a semiconductor layer, a transparent substrate, and a transparent grounded conductive layer and a displaying unit. The semiconductor layer is formed on the transparent substrate, and the photoconductive layer is formed on the opposite surface of the transparent substrate. The displaying unit faces the transparent grounded layer. The shape of the radio wave circuit which is displayed on the displaying unit is mapped on the semiconductor layer to form the radio wave circuit.

Abstract: A phase control device to control an optical control phased array antenna includes a wavelength splitter to split an input optical signal having multiplexed wavelengths corresponding to at least the number of control units of the antenna elements to be controlled for each wavelength, the optical signal, a plurality of phase shifters with different amounts of phase shift to change the phase of the optical signal in accordance with an excitation distribution of antenna elements, an optical switch matrix to assign a required amount of phase shift to an output at each wavelength from the wavelength splitter in accordance with each wavelength to lead it to one of the plurality of phase shifters, and an optical multiplexer to multiplex the outputs from the plurality of phase shifters to output a multiplexed optical signal.