Circularly-polarized reconfigurable transmitarray in Ka-band

L. Di Palma (1) , A. Clemente (1) , L. Dussopt (1) , R. Sauleau (2) , P. Potier (3) , P. Pouliguen (4)

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
3 DGA MRIS - DGA Mission Recherche et Innovation Scientifique
4 DGA.MI - DGA Maîtrise de l'information

In this contribution, we present the design of a 400-element electronically reconfigurable transmitarray working in Ka-band with 180° phase-shifting unit-cells. The sequential rotation technique is applied to generate a circularly-polarized beam over a broad frequency band. The proposed configuration exhibits a broadside gain of 20.3 dBi at 29.0GHz and cross polarization discrimination of 30.0 dB. Multiple focal sources are also used to reduce the overall antenna thickness. © 2016 European Association of Antennas and Propagation.

Keywords: Antennas; Circular polarization; Frequency bands; Phase shift; Polarization; Reconfigurable hardware; Circularly polarized; Circularly polarized beam; Cross polarization discrimination; Discrete lens; Planar lens; Reconfigurable antenna; Sequential rotations; Transmit arrays; Lens antennas

Domains: Computer Science [cs]; Networking and Internet Architecture [cs.NI]; Engineering Sciences [physics]; Electronics

L. Di Palma, A. Clemente, L. Dussopt, R. Sauleau, P. Potier, et al.. Circularly-polarized reconfigurable transmitarray in Ka-band. 10th European Conference on Antennas and Propagation, EuCAP 2016, Apr 2016, Davos, Switzerland. pp.7481441, ⟨10.1109/EuCAP.2016.7481441⟩. ⟨hal-01368113⟩