%0 Journal Article %T 1-bit reconfigurable unit-cell based on PIN diodes for transmit-array applications in X-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) %+ Délégation générale de l'armement (DGA) %A Clemente, Antonio %A Dussopt, Laurent %A Sauleau, Ronan %A Patrick, Potier %A Pouliguen, Philippe %< avec comité de lecture %@ 0018-926X %J IEEE Transactions on Antennas and Propagation %I Institute of Electrical and Electronics Engineers %V 60 %N 5 %P 2260 - 2269 %8 2012 %D 2012 %R 10.1109/TAP.2012.2189716 %K Active unit-cell %K active transmit-array antennas %K reconfigurable antennas %K discrete lens %Z Engineering Sciences [physics]Journal articles %X An electronically reconfigurable unit-cell with 1-bit phase quantization (0°/180°) is proposed for X-band linear polarization transmit-arrays. It consists of two rectangular patch antennas loaded by U-and O-slots and connected by a metallized via hole. The transmission phase is controlled using two PIN diode switches integrated in the O-slot. An equivalent lumpedelement circuit model is implemented and compared successfully to full-wave simulations. The numerical results are validated experimentally using an ad-hoc waveguide simulator. The prototype exhibits low insertion loss (1.8 dB) with the same level for both phase states, a broad 3-dB transmission bandwidth (14.7%), a 1-dB compression point of 13-15 dBm and a gain of 5 dBi at 9.75 GHz. The performance and simplicity of the proposed unit-cell make it attractive to build electronically steerable transmit-arrays in X-band. %G English %2 https://cea.hal.science/cea-03637136/document %2 https://cea.hal.science/cea-03637136/file/TAP_Paper_v4.pdf %L cea-03637136 %U https://cea.hal.science/cea-03637136 %~ CEA %~ UNIV-RENNES1 %~ CNRS %~ INSA-RENNES %~ IETR %~ DRT %~ UR1-HAL %~ UR1-MATH-STIC %~ UR1-UFR-ISTIC %~ IETR-BEAMS %~ IETR-ADH %~ LETI %~ TEST-UR-CSS %~ UNIV-RENNES %~ INSA-GROUPE %~ CEA-GRE %~ UR1-MATH-NUM %~ IETR-SUMIT