Synthesis and characterization of a focused-beam transmitarray antenna at 300 GHz

Francesco Foglia Manzillo (1) , Orestis Koutsos (1) , Benjamin Fuchs (2) , Ronan Sauleau (2) , Antonio Clemente (1)

1 CEA-LETI - Commissariat à l'énergie atomique et aux énergies alternatives - Laboratoire d'Electronique et de Technologie de l'Information
2 IETR - Institut d'Électronique et des Technologies du numéRique

This paper presents the synthesis, design and characterization of a centrosymmetric transmitarray antenna operating at 300 GHz. A broadside pencil beam with reduced sidelobe levels is obtained by fixing the illumination (i.e. feed and focal distance) and using a phase-only array synthesis procedure. The optimal aperture phase distribution is determined by means of an iterative convex optimization algorithm using semidefinite relaxation. Based on this distribution, a 400-element transmitarray comprising eight different unit cells is designed at 300 GHz, fabricated using low-cost printed circuit board technology and characterized. The measured results provide a first experimental validation of the synthesis approach.

Keywords: array synthesis; lens antennas; convex optimization; millimeter-wave antennas; sub-THz antennas

Domains: Engineering Sciences [physics]

Francesco Foglia Manzillo, Orestis Koutsos, Benjamin Fuchs, Ronan Sauleau, Antonio Clemente. Synthesis and characterization of a focused-beam transmitarray antenna at 300 GHz. EuCAP 2022, Mar 2022, Madrid, Spain. ⟨cea-03637057⟩