Qi Song, received his PhD in Electrical Engineering and Computer Science from the University of California, Irvine in 2012, now is CEO of Soleilware Photonics LLC and the joint Professor at Suzhou institute of Biomedical Engineering and Technology, Chinese academy of sciences. His research interest includes microwave and optical device design, metamaterial, photonics nano-device, machine vision and machine learning, with applications to autonomous vehicles and robot.
Metamaterial is the artificial structure under sub-wavelength dimension and could be designed to manipulate the electromagnetic wave radiation across the broad frequency range through microwave to much higher frequency, such as terahertz and optical regime. Lens antenna can generate the focused beam with high gain and shrink the bulky refractive body and feeds into a shape of flat form. This chapter will discuss the general concepts of metalens and the technology of metalens-based antenna at microwave, terahertz and optical frequency. The recent progress in the research and development of metalens antennas is reviewed with designs principle and typical applications. At last part, some innovative techniques such as dynamic focus-tuning of metalen are discussed in details.
Part of the book: Antenna Systems