Millimeter-Wave Wide-Scanning Phased Array Integrated in Package for Applications in Satellite Communication

A novel low-profile wideband dual-circularly polarized metasurface antenna is proposed. It consists of dual-layer rectangle metasurface cells and is excited by a simple two-port feeding network based on traveling-wave sequential feeding mechanism, which includes four crossed slots etched on the ground and a ring strip line. By adjusting the length and width of the four crossed slots and feedline, the equal amplitude of two orthogonal electric fields can be achieved and good right- and left-handed circular polarization (RHCP, LHCP) can be realized. Moreover, a dual-layer metasurface is used as a radiator for miniaturization and improving the radiation performance. For demonstration, one prototype is fabricated and measured. The array system adopts an integrated stacked design of antenna and chip. The measured results show that the proposed array integrated in package can scan up to 60°, which indicates a good application prospect in satellite communication.