José Antonio Encinar Garcinuño

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José Antonio Encinar Garcinuño

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José A. Encinar José A. Encinar (Fellow, IEEE) is a Professor at Universidad Politécnica de Madrid (UPM) since 1991. He received the Master and Ph.D. degrees on the Electrical Engineering, both from UPM, in 1979 and 1985, respectively. Since January 1980, he has been with the Applied Electromagnetics Research Group (GAE) at UPM, as a Teaching and Research Assistant (1980 – 1986), Associate Professor (1986–1991) and Full-Professor (1991– present). He is the leader of the Research Group GEA, which is currently integrated in the “Department of Signals, Systems and Radio Communications” and in the “Information Processing and Telecommunications Center”, both from UPM. He was with the Polytechnic University, Brooklyn, NY, as a Post-doctoral Fellow of the NATO Science Program (1987); and the Institute of Electronics, Communication and Information Technology (ECIT), Queen’s University Belfast, U.K. (2006 and 2011), as a Visiting Professor.

Prof. José A. Encinar has a large experience in developing software tools for the analysis and design of multilayer printed array and reflectarray antennas, and in the design, manufacturing and test of dichroic subreflectors, printed array and reflectarray antennas for space applications. The most significant contribution made by Prof. Encinar in the topic of reflectarray antennas is the development of several concepts, as stacked patches, True Time Delay (TTD) and multi-fed reflectarrays, that allow significant improvements of the electrical performances, such as bandwidth, efficiency, losses, beam-shaping accuracy, polarization purity, dual-frequency and multi-beam operation. He is co-author of the first book published on reflectarray antennas [J. Huang, J. A. Encinar, Reflectarray Antennas, New York: Wiley-IEEE Press, 2008]. He is the author of the chapter “Printed Reflectarray Antennas for Space Applications” in the “Space Antenna Handbook”, Ed. W. A. Imbriale, S. Gao, L. Boccia, John Wiley & Sons 2012. ISBN: 978-1-119-99319-3. He has received the 2005 H. A. Wheeler Applications Prize Paper Award, and the 2007 S. A. Schelkunoff Transactions Prize Paper Award, given by IEEE Antennas and Propagation Society for two papers on reflectarray antennas for space applications. He has been elevated to IEEE Fellow with the citation: “for contributions to analysis and design of reflectarray antennas”. He keeps a worldwide top record in the development of new reflectarray antenna architectures including fixed beam and reconfigurable antennas for point to multipoint communications, beam scanning and space applications, supported by the European Space Agency (ESA), the Spanish Government and by the European Commission for research.

The research activity carried out by Prof. Encinar are mostly focused in applications to space antennas, such as Direct Broadcast Satellite (DBS) antennas and multi-beam satellite antennas in Ka-band. He was in charge of the electrical design of the S/X-band dichroic subreflector for the High Gain Antenna (HGA) of “Mars Express” and “Venus Express” missions, which have been in operation with satisfactory results. Currently his research lines focus on the development of new reflectarray antenna configurations for space applications and for 5G communications networks.

SOME RELEVANT RESEARCH PROJECTS

ARIADNE: “Artificial Intelligence Aided D-band Network for 5G Long Term Evolution” (2019-2022).
MYRADA: “Advanced Multiple Antenna Subsystems for Terrestrial and Satellite Broadband Communications”, TEC2016-75103-C2-1-R, (2017-2020).
MARTA: “Multiple Beam Antennas based on Reflectarrays and Transmitarrays” ESA ITT AO/1-8438/15/NL/AF (2016-2019)
“Advanced Electromagnetic Surfaces for Next-Generation Communication Systems”, NSERC – P Grant, Univ. Toronto (2016 – 2018).
SPADERADAR: “Space Debris Radar”, Comunidad de Madrid, S2013/ICE-3000 (2014-2018).
“New Concepts in Reflectarrays and Transmitarrays for Innovative Antennas and their Experimental Validation”, TEC2013-43345-P. (2014-2016).
RAIPAD: “Reflectarray Antennas with Improved Performances and Design Techniques, ESA TRP AO/1-7064/12/NL/MH, (2012-2016).
Analysis, Design and Prototyping of Reflectarray Antennas and Related Technologies for Space, Telecommunications and Security Applications TEC2010-17567 (2010-2013).
“Innovative Reconfigurable Systems Based on Liquid Crystals”. ESA-ESTEC/Contract 4000103061 (2011-2014).
RESKUE: “Transportable Reflectarray Antenna for Satellite KU-band Emergency Communications”, ESA ITT AO/1-5609/08/NL/ST, (2009-2013).
TERASENSE: “Terahertz technology for information-gathering applications using electromagnetic sensors”, CONSOLIDER-INGENIO 2010, CSD2008-00068 (2008-2013).
ARASCOM: “MEMS & Liquid Crystals based Agile Reflectarry Antennas for Security &COMunications”, Eurpean Comission FP7-ICT, (2008-2011).
X/Ka-band High Gain Data Transmission Antennas, ESA-CASA Espacio (Airbus), RYMSA, UPM (2007-2012).
DEMORATA: Demonstration Model of a Reflectarray for Telecommunications Antenna ESA-ESTEC ARTES-5, Contract 1957/06/NL/JA (2006-2010).
ACE: “Antenna Centre of Excellence”, European Commission FP6, FIST-2004-508009 & IST-2006-026957 (2004-2007).
System application and realization of novel deployable antenna concepts for future development and tests ESA-ESTEC, (2004-2006).
RAFP: Reflect-array Antennas in Flat Panels, ESA TRP AO/1-4133/02/NL/JA (2003-2005).
“Design of a contoured beam Reflectarray in European Coverage”, Centre National D’Etudes Spatiales (CNES), (2002-2005).
“Design of dichroic sub-reflector for the Mars Express Mission”, Airbus-ESA, (1999-2001).

patents

“Double-band and dual-polarization multi-purpose radiating element”, ES2657486A1 (2017).
“Wideband reflectarray antenna for dual polarization applications”, WO2015166296A1 (2014).
“Reconfigurable beam reflectarray antenna for frequencies in the terahertz and millimeter wave ranges”, ES2388213A1 (2010).
“Dual-polarisation reflectarray antenna with improved cross-polarization properties”, EP2337152A1 (2009).
“Flat reflector antenna with metallic parallel dipoles of different lengths and made of dielectric laminate material for performing phase control and orthogonal polarization”, ES2249984A1 (2004).
“Grouping of broadband printed antennas located on cavities and excited by coaxial capacitive probes” ES2180425A1 (2001).
“Printed circuit technology multilayer planar reflector and method for the design thereof”, WO0076026A1 (1999).

Some relevant PhD Thesis Advised

“New advances on multi-frequency and multi-beam reflectarrays with application to satellite antennas in Ka-band”, Eduardo Martinez de Rioja del Nido, (2018). Award best PhD thesis UPM, Award HISDESAT to the best PhD Thesis on Governmental Satellite Services XXXIX Edition Awards COIT/AEIT (2019).
“Contribution to the analysis and design of reflectarray antennas for reconfigurable beam applications at frequencies above 100 GHz using liquid crystal technology”, Gerardo Pérez Palomino (2016).
“Contribución al análisis eficiente y a la mejora de prestaciones de antenas reflectarray”, Rafael Florencio (2016). Award best PhD thesis UPM.
“Development of Efficient Techniques for the Analysis and Design of Antennas in Dual-Reflectarray Configuration”, Carolina Tienda Herrero (2012).
“Contribution to the design of reflectarrays based on delay lines and aperture coupled patches”, Eduardo Carrasco Yépez (2008).
“Contribución al análisis y diseño de de reflectarrays impresos de haz conformado en configuraciones complejas”, Manuel Arrebola Baena (2008). Premio Extraordinario de Doctorado UPM. Award “Fundación Telefónica” to the best PhD Thesis on Telecomunication Networks and Services, given by “Colegio Oficial de Ingenieros de Telecomunicación (COIT)”.

BOOKS AND BOOK CHAPTERS

J. Huang, J. A. Encinar, “Reflectarray Antennas”, John Wiley & Sons, 2008, ISBN: 047008491X.
J. A. Encinar, J. Huang, “Reflectarray Antennas”, Ch. 38, in book “Antenna Engineering Handbook”, Volakis, John (Ed.), McGraw-Hill Education Ltd, 2018, ISBN: 1259644693.
E. Carrasco, J. A. Encinar, “Reflectarray Antennas”, in book “Developments in Antenna Analysis and Design Reflectarray Antennas”, R. Mittra (Ed.) pp. 323-359, IET, 2018, ISBN: 978-1-78561-890-1.
J. A. Encinar, “A Printed Reflectarray Antennas for Space Applications” Ch. 10 in book “Space Antenna Handbook”, W. A. Imbriale, S. Gao, L. Boccia (Ed.), pp. 385-434, Wiley, 2012, ISBN: 9781119945130.
M. E. Bialkowski, J. A. Encinar, J. A. Zornoza, F. C. Tsai, “Printed Reflectarray Antennas” in book “Printed Antennas for Wireless Communications”, R. Waterhouse (Ed.), pp. 299-330, 2007, ISBN: 978-0-470-51224-1.
J. A. Encinar, E. Carrasco, M. Arrebola, “Reflectarray Antennas” in book “Advances on Antennas, Reflectors and Beam Control”,A. Tazon (Ed.) Research Signpost, 2005, ISBN: 81-308-0067-5.

SOME RELEVANT JOURNAL PAPERS

P. Gay-Balmaz, J. A. Encinar and J. R. Mosig, “Analysis of multilayer printed arrays by a modular approach based on the generalized scattering matrix,” in IEEE Trans.on Antennas and Propagation, vol. 48, no. 1, pp. 26-34, Jan. 2000.
J. A. Encinar, “Design of two-layer printed reflectarrays using patches of variable size,” in IEEE Trans. on Antennas and Propagation, vol. 49, no. 10, pp. 1403-1410, Oct. 2001.
J. A. Encinar and J. A. Zornoza, “Broadband design of three-layer printed reflectarrays,” in IEEE Trans. on Antennas and Propagation, vol. 51, no. 7, pp. 1662-1664, July 2003.
J.A. Encinar, J.A. Zornoza, “Three-layer printed reflectarrays for contoured beam space applications”, IEEE Trans. on Antennas and Propagation Vol.52 p.1138-1148, May 2004. received the “2005 H. A. Wheeler Applications Prize Paper Award” from IEEE.
J. A. Zornoza, R. Leberer, J. A. Encinar and W. Menzel, “Folded multilayer microstrip reflectarray with shaped pattern,” in IEEE Trans. on Antennas and Propagation, vol. 54, no. 2, pp. 510-518, Feb. 2006.
J. A. Encinar et al., “Dual-Polarization Dual-Coverage Reflectarray for Space Applications,” in IEEE Trans. on Antennas and Propagation , vol. 54, no. 10, pp. 2827-2837, Oct. 2006. received the “2007 S. A. Schelkunoff Transactions Prize Paper Award” from IEEE.
E. Carrasco, J. A. Encinar and M. Barba, “Bandwidth Improvement in Large Reflectarrays by Using True-Time Delay,” in IEEE Trans. on Antennas and Propagation, vol. 56, no. 8, pp. 2496-2503, Aug. 2008.
W. Hu et al., “94 GHz Dual-Reflector Antenna With Reflectarray Subreflector,” in IEEE Trans. on Antennas and Propagation, vol. 57, no. 10, pp. 3043-3050, Oct. 2009.
J. A. Encinar, M. Arrebola, L. F. de la Fuente and G. Toso, “A Transmit-Receive Reflectarray Antenna for Direct Broadcast Satellite Applications,” in IEEE Trans. on Antennas and Propagation, vol. 59, no. 9, pp. 3255-3264, Sept. 2011.
C. Tienda, J. A. Encinar, M. Arrebola, M. Barba and E. Carrasco, “Design, Manufacturing and Test of a Dual-Reflectarray Antenna With Improved Bandwidth and Reduced Cross-Polarization,” in IEEE Trans. on Antennas and Propagation, vol. 61, no. 3, pp. 1180-1190, March 2013.
R. Florencio, J. A. Encinar, R. R. Boix, V. Losada and G. Toso, “Reflectarray Antennas for Dual Polarization and Broadband Telecom Satellite Applications,” in IEEE Trans. on Antennas and Propagation, vol. 63, no. 4, pp. 1234-1246, April 2015.
S. Montori et al., “A Transportable Reflectarray Antenna for Satellite Ku-band Emergency Communications,” in IEEE Trans.on Antennas and Propagation, vol. 63, no. 4, pp. 1393-1407, April 2015.
R. Florencio, R. R. Boix and J. A. Encinar, “Fast and Accurate MoM Analysis of Periodic Arrays of Multilayered Stacked Rectangular Patches With Application to the Design of Reflectarray Antennas,” in IEEE Trans.on Antennas and Propagation, vol. 63, no. 6, pp. 2558-2571, June 2015.
G. Perez-Palomino et al., “Design and Demonstration of an Electronically Scanned Reflectarray Antenna at 100 GHz Using Multiresonant Cells Based on Liquid Crystals,” in IEEE Trans. on Antennas and Propagation, vol. 63, no. 8, pp. 3722-3727, Aug. 2015.
R. Florencio, R. R. Boix, J. A. Encinar and G. Toso, “Optimized Periodic MoM for the Analysis and Design of Dual Polarization Multilayered Reflectarray Antennas Made of Dipoles,” in IEEE Trans.on Antennas and Propagation, vol. 65, no. 7, pp. 3623-3637, July 2017.
H. Nematollahi, J. Laurin, M. Barba and J. A. Encinar, “Realization of Focused Beam and Shaped Beam Transmitarrays Based on Broadband Unit Cells,” in IEEE Trans.on Antennas and Propagation, vol. 65, no. 8, pp. 4368-4373, Aug. 2017.
E. Martinez-de-Rioja, J. A. Encinar, R. Florencio and C. Tienda, “3-D Bifocal Design Method for Dual-Reflectarray Configurations With Application to Multibeam Satellite Antennas in Ka-Band,” in IEEE Trans.on Antennas and Propagation, vol. 67, no. 1, pp. 450-460, Jan. 2019.
D. Martinez-De-Rioja, E. Martinez-De-Rioja, J. A. Encinar, R. Florencio and G. Toso, “Reflectarray to Generate Four Adjacent Beams per Feed for Multispot Satellite Antennas,” in IEEE Trans.on Antennas and Propagation, vol. 67, no. 2, pp. 1265-1269, Feb. 2019.
R. Florencio, R. R. Boix and J. A. Encinar, “Efficient Spectral Domain MoM for the Design of Circularly Polarized Reflectarray Antennas Made of Split Rings,” in IEEE Trans.on Antennas and Propagation, vol. 67, no. 3, pp. 1760-1771, March 2019.
R. Florencio, J. A. Encinar, R. R. Boix, M. Barba and G. Toso, “Flat Reflectarray That Generates Adjacent Beams by Discriminating in Dual Circular Polarization,” in IEEE Trans.on Antennas and Propagation, vol. 67, no. 6, pp. 3733-3742, June 2019.
M. Abdollahvand, K. Forooraghi, J. A. Encinar, Z. Atlasbaf and E. Martinez-de-Rioja, “A 20/30 GHz Reflectarray Backed by FSS for Shared Aperture Ku/Ka-Band Satellite Communication Antennas,” in IEEE Antennas and Wireless Propagation Letters, vol. 19, no. 4, pp. 566-570, April 2020.
D. Martinez-de-Rioja, R. Florencio, E. Martinez-de-Rioja, M. Arrebola, J. A. Encinar and R. R. Boix, “Dual-Band Reflectarray to Generate Two Spaced Beams in Orthogonal Circular Polarization by Variable Rotation Technique,” in IEEE Trans. on Antennas and Propagation, vol. 68, no. 6, pp. 4617-4626, June 2020.

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