Compact and integrated agile antennas based on tunable ferroelectric materials


Project Director: Dr. Liviu NEDELCU

The project will develop an integrated compact and low power consumption reconfigurable antenna exploiting the agility of ferroelectric materials. Indeed, the main property of such a material is to change their dielectric permittivity depending on an external electric field through a non-linear dielectric effect. To reach both low power consumption and the best trade-off between miniaturization and efficiency.

 

The objective of the MAESTRO project is to reach functional antenna demonstrators with state-of-the-art performances that will be used for future integrated transceiver modules. In particular, the project will:

  •  Develop and realize ferroelectric films on different substrates, metals or oxide electrodes corresponding to the antenna requirements.
  • Characterize ferroelectric films properties from RF to microwaves.
  •  Perform a rigorous full-wave analysis of thin ferroelectric films in order to determine the electromagnetic model of the realized MFM (Metal-Ferroelectric-Metal) capacitor.
  • Determine a very accurate model, which will take into account the frequency range (RF to microwaves), the injected power and the impedance seen in both input and output.

Coordinator: XLIM Research Institute, University of Limoges

Project Manager: Prof. Valerie Mandragean

 

Partener: Science of Ceramic Processing and surface Treatments (SPCTS), University of Limoges

Head of the SPCTS team: Prof. Corine Champeaux

 

Partner: National Institute of Materials Physics (NIMP)

Head of the NIMP team: Dr. Liviu Nedelcu

  • Ir(001) on MgO(001) substrates
  • Ir(011) on MgO(011) substrates
  • Ir(111) on MgO(111) substrates
  • highly oriented Ir(111) on Ti(0001)/Si substrates
  • (00l) textured BST on MgO(001) substrates
  • Ir electrodes with stability at high temperature in oxygen atmosphere (J. Mater. Sci. 51, 8711, 2016)
  • single phase BNT-BT0.08 films by sol-gel method
  • 16 % tunability of Au/Ti//Ir/Ti/SiO2/Si structure at 2.4 GHz
  • 12 % tunability of  Au/Ti/BST20/Ir/MgO(001) structure at 2.4 GHz
  • 30 % tunability of Au/Ti/BNT-BT/Ir/Ti/SiO2/Si structure at 2.4 GHZ
  • ferroelectric varactors based on BNT-BT0.08 films with 50 % tunability (J. Appl. Phys. 119,  144103, 2016)
  • ferroelectric varactors based on Ba2/3Sr1/3TiO3 films with 80 % tunability (IEEE Microwave Wireless Compon. Lett. 26, 504, 2016)
  • modelling of electrostrictive resonance phenomena in Ba2/3Sr1/3TiO3 thin films (J. Appl. Phys. 120, 184101, 2016)

Papers in ISI journals

  1. L. Trupina, L. Nedelcu, C. Negrila, M. G. Banciu, L. Huitema, A. Crunteanu, M. Rammal, A. Ghalem, Growth of highly textured iridium thin films and their stability at high temperature in oxygen atmosphere, J. Mater. Sci. 51 (2016) 8711.
  2. L. Huitema, M. Cernea, A. Crunteanu, L. Trupina, L. Nedelcu, M. G. Banciu, A. Ghalem, M. Rammal, V.Madrangeas, D. Passerieux, P. Dutheil, F. Dumas-Bouchiat, P. Marchet, C. Champeaux, Microwave dielectric properties of BNT-BT0.08 thin films prepared by sol-gel technique, J. Appl. Phys. 119, (2016) 144103.
  3. A. Ghalem, L. Huitema, A. Crunteanu, M. Rammal, L. Trupina, L. Nedelcu, M. G. Banciu, P. Dutheil, C. Constantinescu, P. Marchet, F. Dumas-Bouchiat, C. Champeaux, Electrical transport properties and modelling of electrostrictive resonance phenomena in Ba2/3Sr1/3TiO3 thin films, J. Appl. Phys. 120 (2016) 184101.
  4. A. Ghalem, M. Rammal, L. Huitema, A. Crunteanu, V. Madrangeas, P. Dutheil, F. Dumas Bouchiat, P. Marchet, C. Champeaux, L. Trupina, L. Nedelcu, and M. G. Banciu, Ultra-High tunability of Ba2/3Sr1/3TiO3-based capacitors under low electric fields, IEEE Microwave Wireless Compon. Lett. 26 (2016) 504.

 

Papers presented at international conferences

  1. Highly textured iridium thin films grown on MgO and Si substrates, L. Trupina, L. Nedelcu, C. C. Negrila, M. Cioangher, International Balkan Workshop on Applied Physics, IBWAP 2014.
  2. Dielectric properties of Ba2/3Sr1/3TiO3 ferroelectric ceramics, L. Nedelcu, L. Trupina, C. P. Ganea, C. D. Geambasu, M. Cioangher, M. G. Banciu, International Balkan Workshop on Applied Physics, IBWAP 2014.
  3. P. Dutheil, F. Dumas-Bouchiat, C. Goldner-Constantinescu, S. Quignon, P. Marchet, C. Champeaux,  M. Rammal, L. Huitema, A. Crunteanu, D. Passerieux, D. Cros, T. Monédière, V.Madrangeas, L. Nidelcu, L. Trupina, G. Banciu, M. Cernea, (Ba,Sr)TiO3 thin films integrated in miniature antenna, European Materials Research Society (E-MRS), May 11-15 2015, Lille, France.
  4. P. Dutheil, F. Dumas-Bouchiat, C. Goldner-Constantinescu, S. Quignon, P. Marchet, C. Champeaux,  M. Rammal, L. Huitema, A. Crunteanu, D. Passerieux, D. Cros, T. Monédière, V.Madrangeas, L. Nedelcu, L. Trupina, G. Banciu, M. CerneaFerroelectric thin films deposited by PLD for tunable capacitors, , 20th International Colloquim on Plasma Processes (CIP), June 1-5 2015, Saint –Etienne, France.
  5. M. Rammal, L. Huitema, A. Crunteanu, D. Passerieux, D. Cros, T. Monediere, V. Madrangeas, C. Champeaux, F. Dumas-Bouchiat, P. Marchet, L. Nedelcu, L. Trupina, G. Banciu, M. Cernea, Antenne fil-plaque accordable en fréquence par l’utilisation de matériaux ferroélectriques, Journées Nationales Micro-Ondes, Bordeaux, Juin 2015
  6. P. Dutheil, F. Dumas-Bouchiat, C. Goldner-Constantinescu, S. Quignon, P. Marchet, C. Champeaux, M. Rammal, L. Huitema, A. Crunteanu, D. Passerieux, D. Cros, T. Monédière, V.Madrangeas, L. Nidelcu, L. Trupina, G. Banciu, M. Cernea, Tunable thin films (Ba,Sr)TiO3 and multilayers for miniature antenna, 14th International Conference, European Ceramic Society (ECERS), June 21 -25 2015, Toledo, Spain.
  7. L.Trupina, L. Nedelcu, M.G. Banciu, C. Champeaux, F.Dumas-Bouchiat, P. Marchet, L. Huitema, V. Madrangeas, A. Crunteanu, D. Passerieux, Growth of highly (110)-, (001)- and (111)-textured iridium thin films on MgO single-crystal substrates, 15th International Balkan Workshop on Applied Physics, IBWAP 2015, Constanta, Romania.
  8. L. Nedelcu, L. Trupina, C. P. Ganea, C. D. Geambasu, M. Cioangher, M. G. Banciu, Ferroelectric transitions in Ba1-xSrxTiO3 solid solutions, 15th International Balkan Workshop on Applied Physics, IBWAP 2015, Constanta, Romania.
  9. L. Huitema, V. Madrangeas, A. Cruntenau, D. Passerieux, D. Cros, T. Monediere, C. Champeaux, F. Dumas-Bouchiat, P. Marchet, L. Nedelcu, L.Trupina, G. Banciu, M. Cernea, Tunable ferroelectric materials for RF- microwave applications: high-frequency properties and integration in frequency-agile devices, The 8th International Conference on Advanced Materials, ROCAM 2015, July 2015, Bucharest, Romania.
  10. L. Trupina, L. Nedelcu, M.G. Banciu, C.C. Negrila, C. Champeaux, F. Dumas-Bouchiat, P. Marchet, L. Huitema, V. Madrangeas, A. Cruntenau, D. Passerieux, D. Cros, T. Monediere, Thermal stability of highly textured iridium thin films grown on silicon substrates, 8th International Conference on Advanced Materials, ROCAM 2015, July 2015, Bucharest, Romania.
  11. M. Cernea, L. Nedelcu, L. Trupina, M.G. Banciu, L. Huitema, A. Crunteanu, A. Ghalem, M. Rammal, V. Madrangeas, D. Passerieux, P. Dutheil, F. Dumas-Bouchiat, P. Marchet, C. Champeaux, BNT-BT0.08 thin films for electrically-controlled microwave devices, Electroceramics XV, June 2016, Limoges, France.
  12. .Trupina, L. Nedelcu, M. G. Banciu, C. C. Negrila, C. Champeaux, F. Dumas-Bouchiat, P. Marchet, L. Huitema, V. Madrangeas, A. Cruntenau, D. Passerieux, D. Cros, T. Monediere, Iridium bottom electrodes for tunable microwave components, Electroceramics XV, June 2016, Limoges, France.
  13. L.Trupina, L. Nedelcu, R. Radu, M.G. Banciu, C. Champeaux, F.Dumas-Bouchiat, P. Marchet, L. Huitema, V. Madrangeas, A. Crunteanu, D. Passerieux, (Ba,Sr)TiO3 thi films for tunable microwave devices, 16th International Balkan Workshop on Applied Physics, IBWAP 2016, Constanta, Romania.
  14. L. Nedelcu, L. Trupina, M. Cernea, M. G. Banciu, L. Huitema, A. Crunteanu, A. Ghalem, M. Rammal, V. Madrangeas, D. Passerieux, P. Dutheil, F. Dumas-Bouchiat, P. Marchet, C. Champeaux, Ferroelectric thin film varactors for compact tunable antennas, 16th International Balkan Workshop on Applied Physics, IBWAP 2015, Constanta, Romania.

Dr. Liviu Nedelcu

Scientific researcher rank II

Laboratory of Complex Heterostructures and Multifunctional Materials

Phone: +40-(0)21-2418 123

nedelcu@infim.ro

 

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