%0 Journal Article %T Circularly polarized transmitarray with sequential rotation in Ka-band %+ Commissariat à l'énergie atomique et aux énergies alternatives - Laboratoire d'Electronique et de Technologie de l'Information (CEA-LETI) %+ Institut d'Électronique et des Technologies du numéRique (IETR) %+ DGA Mission Recherche et Innovation Scientifique (DGA MRIS) %A Di Palma, L. %A Clemente, A. %A Dussopt, L. %A Sauleau, R. %A Potier, P. %A Pouliguen, P %Z French Ministry of Defense %< avec comité de lecture %@ 0018-926X %J IEEE Transactions on Antennas and Propagation %I Institute of Electrical and Electronics Engineers %V 63 %N 11 %P 5118--5124 %8 2015-11 %D 2015 %R 10.1109/TAP.2015.2474149 %K antenna radiation patterns %K Arrays %K axial ratio bandwidth %K Bandwidth %K circularly polarized transmitarray antenna %K circular polarization %K Circular polarization (CP) %K CP unit cell %K discrete lens %K electromagnetic wave polarisation %K frequency 30 GHz %K full array configuration %K Gain %K Gain measurement %K hybrid in-house simulation tool %K Insertion loss %K Ka band %K linearly polarized source %K loss 0.2 dB %K microwave antenna arrays %K millimetre wave antenna arrays %K right-handed CP %K sequential rotation %K transmitarray %K Transmitting antennas %K word length 1 bit %Z Engineering Sciences [physics]/Electronics %Z Computer Science [cs]/Networking and Internet Architecture [cs.NI]Journal articles %X We present here the design and demonstration of a circularly polarized (CP) transmitarray antenna operating in Ka-band and illuminated by a linearly polarized (LP) source. The proposed design is based on a CP unit-cell with simulated insertion loss of 0.2 dB at 30 GHz. In order to improve the axial ratio (AR) bandwidth, the sequential rotation technique is applied to the full array configuration. A model based on a hybrid in-house simulation tool is also proposed to predict accurately the array performance. The realized prototype, formed by 400 unit-cells, has 1 bit of phase resolution. The measured broadside gain is 22.8 dBi at 30 GHz with a 3-dB bandwidth of 20% in right-handed CP (RHCP). The obtained 3-dB AR bandwidth of 24.4% is comparable with higher resolution designs %G English %L hal-01300892 %U https://hal-univ-rennes1.archives-ouvertes.fr/hal-01300892 %~ CEA %~ UNIV-NANTES %~ UNIV-RENNES1 %~ CNRS %~ INSA-RENNES %~ IETR %~ IETR_SRC %~ STATS-UR1 %~ CENTRALESUPELEC %~ DRT %~ UR1-HAL %~ UR1-MATH-STIC %~ UR1-UFR-ISTIC %~ IETR-BEAMS %~ IETR-ADH %~ TEST-UNIV-RENNES %~ LETI %~ TEST-UR-CSS %~ UNIV-RENNES %~ INSA-GROUPE %~ CEA-GRE %~ UR1-MATH-NUM %~ IETR-SUMIT %~ NANTES-UNIVERSITE %~ UNIV-NANTES-AV2022