A Metal mesh antenna, which has higher radiation efficiency, and whose light transmittance is higher than that of the ultrathin metal film. But the requirements for the processing technology of this material are very high. Considering the light transmittance, conductivity, and processing technology of the four materials, ITO film is the best choice currently to make transparent antennas. ITO film is also the most widely used material in the research and design of optically transparent antennas.
After over a decade of development, the study of materials that can be used to make transparent antennas has been very comprehensive and extensive. The basic principles of optically transparent antennas have been mastered. Nowadays, the applications of optically transparent antennas in actual scenarios are attracting more attention. An optically transparent GPS antenna can be integrated into a car’s windshield. A transparent RFID reader antenna can be fitted for smart fitting room applications. Optically transparent antennas can be placed over solar panels of satellites which would conserve space utilized to integrate antennas in the main body of satellites.
