Substrate Integrated Cavity Higher Order Mode Excitation Array and Improved Radiation Technology: (Invited Paper)

In millimeter-wave and terahertz bands, the antenna bandwidth, gain and radiation efficiency of substratebased antennas are highly limited, especially in the thin dielectric substrate. Moreover, there are challenges in fabrication and micro-assembly processes, bringing high accuracy requirements. In this paper, the substrate integrated cavity higher order mode excitation arrays in 0.2 THz band proposed previously in our group are introduced. The higher order mode cavity fed slot arrays can be improved using L-slot apertures, dielectric plate lens or silicon-based dielectric array. The higher order mode cavity excitation and their improved radiation technology will be presented in the conference. The presented solutions are suitable for the integrated high gain antenna and antenna in package.