A Broadband Reflectarray for Millimeter Wave Applications

An Millimeter-Wave (MMW) broadband reflectarray, which consists of metallic three parallel dipoles loaded by double square loop units, is investigated in this paper. The enough phasing range of 420° and nearly linearly reflected phase curve benefit from the stable outer square loop, which adds a resonant structure and implements relatively stable local periodic environment. The reflectarray is designed and simulated, which covers an aperture of 64×64 mm
²
.