Creating and sharing knowledge for telecommunications

IT Member Profile

... Afonso Manuel dos Santos Barbosa

Senior Researcher

Afonso Barbosa

Academic position: Full Professor
Joining date: 10-04-1992
Roles in IT: Senior Researcher
Thematic Line: Wireless Technologies
Group: Antennas and Propagation – Lx

Email: Send Email
Address: IT – Lisboa
Instituto Superior Técnico - Torre Norte - Piso 10
Av. Rovisco Pais, 1
1049 - 001 Lisboa
Tel: +351 21 841 84 54
Fax: +351 21 841 84 72

Alternative Personal Web Page

SCOPUS

Scientific Achievements

  • Agregação, Instituto Superior Técnico, 29-07-1992
  • PhD, Instituto Superior Técnico, 13-04-1984
  • MSc, NUFFIC, 19-02-1974
  • Licenciatura, Instituto Superior Técnico, 30-09-1972
  • Electromagnetics Academy,MIT, 01-01-1995, Fellow
  • Instituto Superior Técnico, 01-01-1995, Professor Catedrático
  • AMTA,Antenna Measurement Techniques Association, 01-01-1989, Member
  • Optical Society of America, 01-01-1987, Membro
  • Ordem dos Engenheiros, 23-07-1981, Membro
  • IEEE - Institute of Electrical and Electronics Engineers, 01-01-1980, Senior Member
  • Electromagnetic wave theory and applications with emphasis on complex media
  • Guided wave propagation
  • Microwave field theory and devices
4Books Chapters
  • A. Topa, C. R. Paiva, A. Barbosa, Dispersion and losses in metamaterial DNG H-guides, Chapter in, Metamaterials and Plasmonics: Fundamentals, Modelling and Applications, S. Zouhdi, A. Sihvola, and A. Vinogradov, Springer, 2009
  • A. Topa, C. R. Paiva, A. Barbosa, Electromagnetic Wave Propagation in Omega Waveguides:Discrete Complex Modes and Application to a Ridge Waveguide, Chapter in, Progress in Electromagnetic Research, J. A. Kong, EMW Publishing, Cambridge, Massachussets, 2004
  • A. Topa, C. R. Paiva, A. Barbosa, Surface and Leaky Modes of Multilayered Omega Structures, Chapter in, Advances in Electromagnetics of Complex Media and Metamaterials, Saïd Zouhdi, Ari Sihvola, and Mohamed Arsalane, Kluwer Academic, Dordrecht, Netherlands, 2002
  • A. Topa, C. R. Paiva, A. Barbosa, Complete Spectral Representation for the Electromagnetic Field of Planar Multilayered Waveguides Containing Pseudochiral Omega Media, Chapter in, Progress In Electromagnetic Research, J. A. Kong, EMW Publishing, Cambridge, Massachussets, 1998
41Papers in Journals
  • João R. Canto, C. R. Paiva, A. Barbosa, Dispersion and Losses in Surface Waveguides Containing Double Negative or Chiral Metamaterials, Progress in Electromagnetics Research, Vol. 116, No. -, pp. 409 - 423, May, 2011,
    | Abstract     | BibTex
  • João R. Canto, C. R. Paiva, A. Barbosa, Modal analysis of bi-isotropic H-guides, Progress in Electromagnetics Research, Vol. 111, No. -, pp. 1 - 24, January, 2011,
    | Abstract     | BibTex
  • A. Topa, C. R. Paiva, A. Barbosa, Electromagnetic Wave Propagation in Chiral H-Guides, Progress in Electromagnetics Research, Vol. PIER 103, No. 103, pp. 285 - 303, April, 2010 | Full text (PDF 785 KBs) | BibTex
  • S.A. Matos, C. R. Paiva, A. Barbosa, Anisotropy done right: a geometric algebra approach, EPJ Applied Physics, Vol. 49, No. 3, pp. 33006-1 - 33006-10, February, 2010,
    | Abstract     | BibTex
  • A. Topa, C. R. Paiva, A. Barbosa, Guidance and Leakage Behavior of Uniaxial Ridge Waveguides, Journal of Electromagnetic Waves and Applications, Vol. 23, No. 13, pp. 1675 - 1684, September, 2009,
    | Abstract     | Full text (PDF 270 KBs) | BibTex
  • S.A. Matos, João R. Canto, C. R. Paiva, A. Barbosa, Complex aberration effect in moving dispersive DNG media: a spacetime algebra approach, PIERS Online, Vol. 4, No. 6, pp. 611 - 614, June, 2008,
    | Abstract     | BibTex
  • João R. Canto, S.A. Matos, C. R. Paiva, A. Barbosa, Effect of Losses in a Layered Structure Containing DPS and DNG Media, PIERS Online, Vol. 4, No. 5, pp. 546 - 550, May, 2008,
    | Abstract     | BibTex
  • S.A. Matos, C. R. Paiva, A. Barbosa, Surface and Proper Leaky-Modes in a Lossless Grounded Pseudochiral Omega Slab, Microwave and Optical Tech. Letters, Vol. 50, No. 3, pp. 814 - 818, March, 2008,
    | Abstract     | BibTex
  • S.A. Matos, C. R. Paiva, João R. Canto, A. Barbosa, New Physical Effects At An Air-Pseudochiral Omega Interface: Surface Polaritons and Proper Leaky-Modes, Microwave and Optical Tech. Letters, Vol. 48, No. 12, pp. 2517 - 2520, December, 2006,
    | Abstract     | BibTex
  • A. Topa, C. R. Paiva, A. Barbosa, Novel propagation features of double negative H-guides and H-guide couplers, Microwave and Optical Tech. Letters, Vol. 47, No. 2, pp. 185 - 190, October, 2005 | Full text (PDF 141 KBs) | BibTex
  • J.R. Costa, P. M. Ramos, C. R. Paiva, A. Barbosa, Numerical study of passive gain equalization with twin-core fiber coupler amplifiers for WDM systems, IEEE Journal of Quantum Electronics, Vol. 37, No. 12, pp. 1553 - 1561, December, 2001,
    | Abstract     | Full text (PDF 198 KBs) | BibTex
  • A. Topa, C. R. Paiva, A. Barbosa, Complex Eigenmodes in Planar Waveguides with Pseudochiral Omega Media, Izvestiya Gomel'skogo Gosundarstvennogo Universitet, Vol. 9, No. 6, pp. 84 - 88, November, 2001 | BibTex
  • A. Topa, C. R. Paiva, A. Barbosa, Least Squares Boundary Residual Method for the Analysis of Step Discontinuities in Open Chiral Waveguides, AEU - International Journal of Electronics and Communications, Vol. 55, No. 4, pp. 281 - 291, July, 2001 | BibTex
  • W. Weiglhofer, A. Barbosa, A. Topa, Guest Editorial, AEU - International Journal of Electronics and Communications, Vol. 55, No. 4, pp. 209 - 210, July, 2001 | BibTex
  • J.R. Costa, C. R. Paiva, A. Barbosa, Modified Split-Step Fourier Method for the Numerical Simulation of Soliton Amplification in Erbium-Doped Fibers with Forward Propagating Noise, IEEE Journal of Quantum Electronics, Vol. 37, No. 1, pp. 145 - 152, January, 2001,
    | Abstract     | Full text (PDF 173 KBs) | BibTex
  • C. R. Paiva, A. Topa, A. Barbosa, Influence of intermodal dispersion on the switching of solitons at different wavelengths in twin-core fiber couplers, Journal of the Optical Society of America B: Optical Physics, Vol. 16, No. 10, pp. 1636 - 1641, October, 1999 | Full text (PDF 141 KBs) | BibTex
  • A. Topa, C. R. Paiva, A. Barbosa, Propagation Characteristics of the Rectangular Waveguide Inhomogeneously Filled with Uniaxial Omega Media, IEICE Transactions on Electronics, Vol. E82-C, No. 7, pp. 1166 - 1171, July, 1999 | BibTex
  • A. Topa, C. R. Paiva, A. Barbosa, Full-Wave Analysis of a Nonradiative Dielectric Waveguide with a Pseudochiral Omega Slab, IEEE Transactions on Microwave Theory and Techniques, Vol. 46, No. 9, pp. 1263 - 1269, September, 1998,
    | Abstract     | Full text (PDF 246 KBs) | BibTex
  • A. Topa, C. R. Paiva, A. Barbosa, Complete Spectral Representation for the Electromagnetic Field of Planar Multilayered Waveguides Containing Pseudochiral Omega Media - Abstract, Journal of Electromagnetic Waves and Applications, Vol. 12, No. 3, pp. 349 - 350, March, 1998 | BibTex
  • D. Lemaire, C. A. Fernandes, P. Sobieski, A. Barbosa, A method to overcome the limitations of G.O. in the design of axis-symmetrical lenses, Intrnl. Journal of Infrared and Millimetrewaves, Vol. 17, No. 8, pp. 1377 - 1390, August, 1996 | BibTex
  • C. A. Fernandes, A. Barbosa, Analysis of the radiation from a class of finite-length structures, using the Wiener-Hopf formulation: application to a multi-filar helix, Journal of Electromagnetic Waves and Applications, Vol. 8, No. 7, pp. 909 - 931, June, 1994,
    | Abstract     | Full text (PDF 1010 KBs) | BibTex
  • A. Topa, C. R. Paiva, A. Barbosa, New Biorthogonality Relations for Inhomogeneous Biisotropic Planar Waveguides, IEEE Transactions on Microwave Theory and Techniques, Vol. 42, No. 5, pp. 629 - 634, April, 1994 | BibTex
  • C. R. Paiva, A. Topa, A. Barbosa, Novel propagation features of dielectric planar chirowaveguides due to nonreciprocity, Microwave and Optical Tech. Letters, Vol. 6, No. 3, pp. 182 - 185, March, 1993 | BibTex
  • C. Peixeiro, A. Barbosa, Rigorous modelling of coaxial feeds for microstrip antennas on anisotropic multilayered structures, Journal of Electromagnetic Waves and Applications, Vol. 7, No. 2, pp. 285 - 300, March, 1993 | BibTex
  • C. R. Paiva, A. Topa, A. Barbosa, Semileaky waves in dielectric chirowaveguides, Optics Letters, Vol. 17, No. 23, pp. 1670 - 1672, December, 1992 | Full text (PDF 354 KBs) | BibTex
  • A. Topa, C. R. Paiva, A. Barbosa, Rigorous Analysis of a Step Discontinuity in a Dielectric Planar Anisotropic Waveguide, Microwave and Optical Tech. Letters, Vol. 5, No. 11, pp. 602 - 606, October, 1992 | BibTex
  • C. Peixeiro, A. Barbosa, Leaky and surface waves in anisotropic printed antenna structures, IEEE Transactions on Antennas and Propagation, Vol. 40, No. 5, pp. 566 - 569, May, 1992 | BibTex
  • C. R. Paiva, A. Barbosa, A linear-operator formalism for the analysis of inhomogeneous biisotropic planar waveguides, IEEE Transactions on Microwave Theory and Techniques, Vol. 40, No. 1, pp. 672 - 678, April, 1992 | BibTex
  • C. R. Paiva, A. Barbosa, A method for the analysis of biisotropic planar waveguides - Application to a grounded chiroslabguide, Electromagnetics, Vol. 11, No. 1, pp. 209 - 221, March, 1991 | BibTex
  • C. R. Paiva, A. Barbosa, Spectral characterization of self-adjoint problems for layered anisotropic waveguides, IEEE Transactions on Microwave Theory and Techniques, Vol. 39, No. 1, pp. 330 - 338, February, 1991 | BibTex
  • C. A. Fernandes, A. Barbosa, Complex Wave Radiation from a Sheath Helix Excited by the Circular Waveguide TE11 Mode, Journal of Electromagnetic Waves and Applications, Vol. 4, No. 6, pp. 549 - 571, June, 1990,
    | Abstract     | BibTex
  • C. A. Fernandes, A. Barbosa, Radiation From a Sheath Helix Excited by a Cicular Waveguide - a Wiener-Hopf Analysis, IET Microwaves, Antennas and Propagation, Vol. 137, No. 5, pp. 269 - 275, June, 1990 | BibTex
  • C. R. Paiva, A. Barbosa, An analytical approach to stratified waveguides with anisotropic layers in the longitudinal or polar configurations, Journal of Electromagnetic Waves and Applications, Vol. 4, No. 1, pp. 75 - 93, April, 1990 | BibTex
  • C. R. Paiva, A. Barbosa, Conductor-backed dielectric slab: effect of upper-shielding, Técnica, Vol. 3/88, No. 3, pp. 45 - 47, November, 1988 | BibTex
  • C. R. Paiva, A. Barbosa, Matrix formulation for electromagnetic wave propagation in multilayered bianisotropic media, Técnica, Vol. 2/88, No. 2, pp. 24 - 36, September, 1988 | BibTex
  • J. Figanier, A. Barbosa, A simple procedure to implement the two stubs and a quarter wavelength line impedance matching method, Técnica, Vol. 85, No. 1/2, pp. 86 - 87, January, 1985 | BibTex
  • A. Barbosa, J. Figanier, Strip grating leaky wave antenna, IEEE Transactions on Antennas and Propagation, Vol. 84, No. 3/4, pp. 102 - 104, June, 1984 | BibTex
  • A. Barbosa, A. Santos, J. Figanier, Radiation field of a periodic strip grating excited by an aperiodic source, Radio Science, Vol. 19, No. 3, pp. 829 - 839, May, 1984 | BibTex
  • A. Barbosa, A. Santos, J. Figanier, Wave propagation on a strip grating over an impedance plane:Solution by reduction to a modified Riemann-Hilbert problem :, Radio Science, Vol. 18, No. 4, pp. 519 - 531, July, 1983 | BibTex
  • A. Barbosa, A. Santos, J. Figanier, Leaky waves supported by a wire mesh with bonded junctions above a reactive surface, Radio Science, Vol. 17, No. 1, pp. 219 - 228, January, 1982 | BibTex
  • A. Barbosa, A. Santos, J. Figanier, Leaky waves supported by a wire grid above a reactive surface, IET Microwaves, Antennas and Propagation, Vol. 128, No. 5, pp. 243 - 246, October, 1981 | BibTex
117Papers in Conferences
  • S.A. Matos, C. R. Paiva, A. Barbosa, Biaxial Media Beyond Electric Anisotropy, Encuentro Ibérico de Electromagnetismo Computacional - EIEC, Sesimbra, Portugal, Vol. -, pp. - - -, November, 2011 | BibTex
  • A. Topa, C. R. Paiva, A. Barbosa, Recent Investigation on Indefinite Medium Waveguides, Encuentro Ibérico de Electromagnetismo Computacional - EIEC, Sesimbra, Portugal, Vol. 1, pp. 1 - 1, November, 2011,
    | Abstract     | BibTex
  • A. Topa, C. R. Paiva, A. Barbosa, Dispersion Diagrams of Waveguides Filled With Indefinite Media, Conf. on Telecommunications - ConfTele, Lisbon, Portugal, Vol. 1, pp. 1 - 1, April, 2011,
    | Abstract     | BibTex
  • S.A. Matos, C. R. Paiva, A. Barbosa, Conical Refraction in Generalized Biaxial Media A Geometric Algebra Approach, Conf. on Telecommunications - ConfTele, Lisbon, Portugal, Vol. -, pp. - - -, April, 2011 | BibTex
  • S.A. Matos, C. R. Paiva, A. Barbosa, Relativistic Effects for Superluminal (Bi)-isotropic Media, Metamorphose International Congress on Advanced Electromagnetic Materials in Microwaves and Optics - METAMATERIALS, Karlsruhe, Germany, Vol. -, pp. - - -, September, 2010,
    | Abstract     | BibTex
  • S.A. Matos, C. R. Paiva, A. Barbosa, Complex Aberration and a New Cerenkov Effect for Superluminal Phase Velocities, URSI International Symp. in Electromagnetic Theory, Berlin, Germany, Vol. -, pp. - - -, August, 2010,
    | Abstract     | BibTex
  • A. Topa, C. R. Paiva, A. Barbosa, Electromagnetic Wave Propagation in Waveguides with Indefinite Media, IEEE AP-S/URSI International Symp., Toronto, Canada, Vol. 1, pp. 1 - 1, July, 2010,
    | Abstract     | BibTex
  • João R. Canto, C. R. Paiva, A. Barbosa, A building block approach to H-guides containing biisotropic media, Encuentro Ibérico de Electromagnetismo Computacional - EIEC, Monfragüe - Cáceres, Spain, Vol. -, pp. - - -, May, 2010 | BibTex
  • A. Topa, C. R. Paiva, A. Barbosa, Variable Omega Directional Couplers, Encuentro Ibérico de Electromagnetismo Computacional - EIEC, Cáceres, Spain, Vol. 1, pp. 1 - 1, May, 2010,
    | Abstract     | BibTex
  • S.A. Matos, C. R. Paiva, A. Barbosa, Advantages of Geometric Algebra as a New Coordinate-free Approach to Complex Media, Encuentro Ibérico de Electromagnetismo Computacional - EIEC, Monfragüe- Cáceres, Spain, Vol. -, pp. - - -, May, 2010,
    | Abstract     | BibTex
  • S.A. Matos, C. R. Paiva, A. Barbosa, A geometric perspective on omega-like media, NATO Advanced Research Workshop: Metamaterials for Secure Information and Communication Technologies - ARW, Cairo, Egypt, Vol. -, pp. - - -, February, 2010 | BibTex
  • João R. Canto, C. R. Paiva, A. Barbosa, Guidance and Leakage Properties of Tellegen H-guides, NATO Advanced Research Workshop: Metamaterials for Secure Information and Communication Technologies - ARW, Cairo, Egypt, Vol. -, pp. - - -, February, 2010,
    | Abstract     | BibTex
  • A. Topa, C. R. Paiva, A. Barbosa, NRD Directional Couplers using Omega Media, NATO Advanced Research Workshop: Metamaterials for Secure Information and Communication Technologies - ARW, Cairo, Egypt, Vol. 1, pp. 1 - 1, February, 2010,
    | Abstract     | BibTex
  • S.A. Matos, C. R. Paiva, A. Barbosa, A New Geometric Perspective on Bianisotropy Using Clifford Algebra, Metamorphose International Congress on Advanced Electromagnetic Materials in Microwaves and Optics - METAMATERIALS, London, United Kingdom, Vol. -, pp. - - -, September, 2009,
    | Abstract     | BibTex
  • S.A. Matos, C. R. Paiva, A. Barbosa, Vacuum Form Reduction for Moving Bi-isotropic Media, Metamorphose International Congress on Advanced Electromagnetic Materials in Microwaves and Optics - METAMATERIALS, London, United Kingdom, Vol. -, pp. - - -, September, 2009,
    | Abstract     | BibTex
  • João R. Canto, C. R. Paiva, A. Barbosa, A geometric algebra approach to the reflection and transmission of electromagnetic waves at interfaces between isotropic and general anisotropic media, Metamorphose International Congress on Advanced Electromagnetic Materials in Microwaves and Optics - METAMATERIALS, London, United Kingdom, Vol. -, pp. - - -, September, 2009,
    | Abstract     | BibTex
  • A. Topa, C. R. Paiva, A. Barbosa, New NRD-waveguide Devices Using Metamaterials, Progress in Electromagnetics Research Symp. - PIERS, Moscow, Russia, Vol. 1, pp. 1 - 1, August, 2009,
    | Abstract     | BibTex
  • S.A. Matos, C. R. Paiva, A. Barbosa, Beyond Isotropic Metamaterials: From Anisotropic to Bianisotropic Media Using the Geometric Perspective Provided by Clifford Algebra, Young Scientist Meeting on Metamaterials, Leganés, Spain, Vol. -, pp. - - -, July, 2009,
    | Abstract     | BibTex
  • S.A. Matos, C. R. Paiva, A. Barbosa, A Spacetime Algebra Approach to Moving Bi-isotropic Media, IEEE AP-S/URSI International Symp., Charleston, United States, Vol. -, pp. - - -, June, 2009,
    | Abstract     | BibTex
  • A. Topa, C. R. Paiva, A. Barbosa, Leakage, Dispersion and Losses in Omega H-Guides, IEEE AP-S/URSI International Symp., Charleston, United States, Vol. 1, pp. 1 - 1, June, 2009,
    | Abstract     | BibTex
  • João R. Canto, C. R. Paiva, A. Barbosa, Analysis of Tellegen H-Guides, IEEE AP-S/URSI International Symp., Charlston, United States, Vol. -, pp. - - -, June, 2009,
    | Abstract     | BibTex
  • S.A. Matos, C. R. Paiva, A. Barbosa, Optic axes of general anisotropic media: a geometric algebra perspective, Conf. on Telecommunications - ConfTele, Santa Maria da Feira, Portugal, Vol. -, pp. - - -, May, 2009,
    | Abstract     | BibTex
  • A. Topa, C. R. Paiva, A. Barbosa, Leaky Mode Dispersion in Omega NRD Waveguides, Conf. on Telecommunications - ConfTele, Vila da Feira, Portugal, Vol. 1, pp. 1 - 1, May, 2009,
    | Abstract     | BibTex
  • João R. Canto, C. R. Paiva, A. Barbosa, A novel approach to the reflection and transmission of electromagnetic waves at interfaces between isotropic and general anisotropic media, Conf. on Telecommunications - ConfTele, Santa Maria da Feira, Portugal, Vol. -, pp. - - -, May, 2009,
    | Abstract     | BibTex
  • A. Topa, C. R. Paiva, A. Barbosa, Metamaterial Dispersion and Loss in a Double Negative Nonradiative Dielectric Waveguide, IEEE CONVENTION OF ELECTRICAL AND ELECTRONICS ENGINEERS IN ISRAEL, Eilat, Israel, Vol., pp. - - -, December, 2008,
    | Abstract     | BibTex
  • A. Topa, C. R. Paiva, A. Barbosa, Guided Waves in Metamaterials, URSI Seminar of the Portuguese Committee, Lisboa, Portugal, Vol., pp. - - -, November, 2008,
    | Abstract     | BibTex
  • S.A. Matos, C. R. Paiva, A. Barbosa, Electromagnetics of Complex Media using Geometric Algebra, Encuentro Ibérico de Electromagnetismo Computacional - EIEC, Cádiz, Spain, Vol. -, pp. - - -, October, 2008,
    | Abstract     | BibTex
  • A. Topa, C. R. Paiva, A. Barbosa, Guided Waves in Metamaterial Three-dimensional Waveguides, Encuentro Ibérico de Electromagnetismo Computacional - EIEC, Cádiz, Spain, Vol., pp. 1 - 1, October, 2008,
    | Abstract     | BibTex
  • João R. Canto, S.A. Matos, C. R. Paiva, A. Barbosa, Interfaces between air and general anisotropic media: A geometric approach, Encuentro Ibérico de Electromagnetismo Computacional - EIEC, Cádiz, Spain, Vol. -, pp. - - -, October, 2008 | BibTex
  • S.A. Matos, João R. Canto, C. R. Paiva, A. Barbosa, New insights into anisotropy and bianisotropy using geometric algebra, Metamorphose International Congress on Advanced Electromagnetic Materials in Microwaves and Optics - METAMATERIALS, Pamplona, Spain, Vol. 1, pp. 43 - 43, September, 2008,
    | Abstract     | BibTex
  • João R. Canto, S.A. Matos, C. R. Paiva, A. Barbosa, Dispersion and Losses at Air-DNG and Air-Chiral Interfaces, Metamorphose International Congress on Advanced Electromagnetic Materials in Microwaves and Optics - METAMATERIALS, Pamplona, Spain, Vol. 1, pp. 353 - 355, September, 2008,
    | Abstract     | BibTex
  • A. Topa, C. R. Paiva, A. Barbosa, The effect of material dispersion in omega nonradiative dielectric waveguides, URSI General Assembly, Chicago, United States, Vol. 1, pp. 1 - 1, August, 2008,
    | Abstract     | BibTex
  • João R. Canto, S.A. Matos, C. R. Paiva, A. Barbosa, Effect of Losses in a Layered Structure Containing DPS and DNG Media, Progress in Electromagnetics Research Symp. - PIERS, Cambridge, United States, Vol. 1, pp. 817 - 821, July, 2008,
    | Abstract     | BibTex
  • S.A. Matos, João R. Canto, C. R. Paiva, A. Barbosa, Complex Aberration Effect in Moving Dispersive DNG Media: A Spacetime Algebra Approach, Progress in Electromagnetics Research Symp. - PIERS, Cambridge, United States, Vol. 1, pp. 822 - 825, July, 2008,
    | Abstract     | Full text (PDF 24 KBs) | BibTex
  • S.A. Matos, João R. Canto, C. R. Paiva, A. Barbosa, A New Framework Based on Geometric Algebra for the Analysis of Materials and Metamaterials with Electric and Magnetic Anisotropy, IEEE AP-S/URSI International Symp., San Diego, United States, Vol. -, pp. - - -, July, 2008,
    | Abstract     | Full text (PDF 376 KBs) | BibTex
  • João R. Canto, S.A. Matos, C. R. Paiva, A. Barbosa, Isotropic-Uniaxial Interfaces for Anisotropic Media with Biaxial Electric and Magnetic Functions: A New Approach with Geometric Algebra, IEEE AP-S/URSI International Symp., San Diego, United States, Vol. 1-9, pp. 1380 - 1383, July, 2008,
    | Abstract     | BibTex
  • João R. Canto, S.A. Matos, C. R. Paiva, A. Barbosa, A geometric algebra approach to media with both general electric and magnetic anisotropy, NATO Advanced Research Workshop: Metamaterials for Secure Information and Communication Technologies - ARW, Marrakesh, Morocco, Vol. 1, pp. 371 - 371, May, 2008 | BibTex
  • A. Topa, C. R. Paiva, A. Barbosa, The effect of metamaterial losses in DNG H-guide performance, NATO Advanced Research Workshop: Metamaterials for Secure Information and Communication Technologies - ARW, Marrakesh, Morocco, Vol. 1, pp. 569 - 569, May, 2008 | BibTex
  • S.A. Matos, João R. Canto, C. R. Paiva, A. Barbosa, A geometric algebra approach to bianisotropy, NATO Advanced Research Workshop: Metamaterials for Secure Information and Communication Technologies - ARW, Marrakesh, Morocco, Vol. 1, pp. 86 - 86, May, 2008,
    | Abstract     | BibTex
  • S.A. Matos, C. R. Paiva, A. Barbosa, A Coordinate-Free Approach to a Pseudochiral Omega Medium, Metamorphose International Congress on Advanced Electromagnetic Materials in Microwaves and Optics - METAMATERIALS, Rome, Italy, Vol. 1, pp. 45 - 45, October, 2007,
    | Abstract     | BibTex
  • João R. Canto, C. R. Paiva, A. Barbosa, Bloch Waves with Negative Phase Velocity in Multilayered Structures Containing Uniaxial Chiral Media, Metamorphose International Congress on Advanced Electromagnetic Materials in Microwaves and Optics - METAMATERIALS, Roma, Italy, Vol. 1, pp. 226 - 229, October, 2007 | BibTex
  • A. Topa, C. R. Paiva, A. Barbosa, Proper Leaky Modes in DNG Ridge Waveguides, Progress in Electromagnetics Research Symp. - PIERS, Prague, Czech Republic, Vol. 1, pp. 1 - 4, August, 2007 | BibTex
  • João R. Canto, C. R. Paiva, A. Barbosa, Multilayered Structures Containing Isotropic Chiral Media: Bloch Waves with Negative Phase Velocity and Forbidden Bands, URSI International Symp. in Electromagnetic Theory, Ottawa, Canada, Vol. -, pp. - - -, July, 2007 | BibTex
  • S.A. Matos, C. R. Paiva, A. Barbosa, New Approach on the Electromagnetics of a Moving Chiral Media, URSI International Symp. in Electromagnetic Theory, Ottawa, Canada, Vol. -, pp. - - -, July, 2007,
    | Abstract     | BibTex
  • A. Topa, C. R. Paiva, A. Barbosa, Dispersive Leaky-Mode Propagation in Metamaterial Nonradiative Dielectric Waveguides, IEEE AP-S/URSI International Symp., Honolulu, United States, Vol. 1, pp. 1 - 4, June, 2007 | BibTex
  • João R. Canto, C. R. Paiva, S.A. Matos, A. Barbosa, Leaky wave propagation in a uniaxial chiroslabguide, Conf. on Telecommunications - ConfTele, Peniche, Portugal, Vol. 1, pp. 41 - 44, May, 2007 | BibTex
  • S.A. Matos, C. R. Paiva, João R. Canto, A. Barbosa, Complex Waves in a Grounded Bianisotropic Slab with Omega Inclusions, Conf. on Telecommunications - ConfTele, Peniche, Portugal, Vol. 1, pp. 97 - 100, May, 2007,
    | Abstract     | BibTex
  • A. Topa, C. R. Paiva, A. Barbosa, Propagation Analysis of Chiral H-Guides, Conf. on Telecommunications - ConfTele, Peniche, Portugal, Vol. 1, pp. 5 - 8, May, 2007 | BibTex
  • João R. Canto, C. R. Paiva, A. Barbosa, Forbidden bands in periodic multilayered structures containing DNG media, Encuentro Ibérico de Electromagnetismo Computacional - EIEC, Aiguablava, Spain, Vol. -, pp. - - -, April, 2007 | BibTex
  • S.A. Matos, C. R. Paiva, A. Barbosa, Effect of Dispersion on a Moving DNG Medium, Encuentro Ibérico de Electromagnetismo Computacional - EIEC, Aiguablava, Spain, Vol. 1, pp. 1 - 4, April, 2007,
    | Abstract     | BibTex
  • A. Topa, C. R. Paiva, A. Barbosa, Assessment of the Effective Index Method in the Analysis of DNG Metamaterial Waveguides, Encuentro Ibérico de Electromagnetismo Computacional - EIEC, Barcelona, Spain, Vol. 1, pp. 1 - 4, April, 2007 | BibTex
  • A. Topa, C. R. Paiva, A. Barbosa, Electromagnetic-Wave Propagation in Chiral H-Guides, USNC/URSI National Radio Science Meeting, Albuquerque, United States, Vol. 1, pp. 1 - 1, July, 2006 | BibTex
  • João R. Canto, C. R. Paiva, S.A. Matos, A. Barbosa, Surface and Leaky-Modes in a Uniaxial Grounded Chiroslabguide, Workshop on metamaterials and Special materials for Electromagnetic Applications and TLC, Roma, Italy, Vol. 1, pp. 56 - 56, March, 2006 | BibTex
  • S.A. Matos, C. R. Paiva, João R. Canto, A. Barbosa, Guided Electromagnetic Wave Propagation at an Air-Pseudochiral Omega Interface, Workshop on metamaterials and Special materials for Electromagnetic Applications and TLC, Rome, Italy, Vol. 1, pp. 84 - 84, March, 2006,
    | Abstract     | BibTex
  • A. Topa, C. R. Paiva, A. Barbosa, DNG-NRD Directional Couplers, Progress in Electromagnetics Research Symp. - PIERS, Hangzhou, China, Vol. 1, pp. 115 - 115, August, 2005 | BibTex
  • A. Topa, C. R. Paiva, A. Barbosa, Mode Coupling in Parallel DNG/DPS H-Guides: A Full-wave Analysis, USNC/URSI National Radio Science Meeting, Washington, United States, Vol. 1, pp. 1 - 1, July, 2005 | BibTex
  • A. Topa, C. R. Paiva, A. Barbosa, Electromagnetic Wave Propagation in Waveguiding Structures Containing DNG Metamaterials, Conf. on Telecommunications - ConfTele, Tomar, Portugal, Vol. 1, pp. 1 - 1, April, 2005 | BibTex
  • A. Topa, C. R. Paiva, A. Barbosa, Guided Wave Propagation in H-guides using Double Negative Materials, USNC/URSI National Radio Science Meeting, Monterey, United States, Vol. 1, pp. 156 - 156, June, 2004 | BibTex
  • A. Topa, C. R. Paiva, A. Barbosa, Electromagnetic Wave Propagation in 3D Planar Waveguides Using Unconventional Media, Encuentro Ibérico de Electromagnetismo Computacional - EIEC, Burgos, Spain, Vol. 1, pp. 1 - 4, December, 2003 | BibTex
  • A. Topa, C. R. Paiva, A. Barbosa, Discrete Complex Spectrum of 3D Omega Waveguides, USNC/URSI National Radio Science Meeting, Columbus, United States, Vol. 1, pp. 221 - 221, June, 2003 | BibTex
  • A. Topa, C. R. Paiva, A. Barbosa, Recent Results on the Electromagnetic Characterization of Chiral Planar Waveguides, Conf. on Telecommunications - ConfTele, Aveiro, Portugal, Vol. 1, pp. 115 - 118, June, 2003 | BibTex
  • A. Topa, C. R. Paiva, A. Barbosa, Complex Spectrum of 3D Open Chiral Waveguides, USNC/URSI National Radio Science Meeting, San Antonio, United States, Vol. 1, pp. 111 - 111, June, 2002 | BibTex
  • A. Topa, C. R. Paiva, A. Barbosa, Surface and Leaky Modes of Multilayered Omega Structures, International Conf. on Electromagnetics of Complex Media - BIANISOTROPICS, Marrakech, Morocco, Vol. 1, pp. 46 - 46, May, 2002 | BibTex
  • A. Topa, C. R. Paiva, A. Barbosa, Electromagnetic Characterization of Abrupt Discontinuities in Chiral Waveguides, Encuentro Ibérico de Electromagnetismo Computacional - EIEC, Aracena, Spain, Vol. 1, pp. 12 - 12, December, 2001 | BibTex
  • A. Topa, C. R. Paiva, A. Barbosa, Complex Eigenmodes in Planar Waveguides with Pseudochiral Omega Media, Problems of Interaction of Radiation with Matter, Gomel, Belarus, Vol. 1, pp. 69 - 69, October, 2001 | BibTex
  • A. Topa, C. R. Paiva, A. Barbosa, Complex Spectrum of Planar Omega Structures, International Conf. on Electromagnetics in Advanced Applications - ICEAA, Torino, Italy, Vol. 1, pp. 719 - 722, September, 2001 | BibTex
  • A. Topa, C. R. Paiva, A. Barbosa, Semileaky Modes in Dielectric Pseudochiral Slabs, USNC/URSI National Radio Science Meeting, Boston, United States, Vol. 1, pp. 388 - 388, July, 2001 | BibTex
  • A. Topa, C. R. Paiva, A. Barbosa, Theory of Inhomogeneous Planar Layered Waveguides with Transverse Anisotropy, URSI International Symp. in Electromagnetic Theory, Victoria, Canada, Vol. 1, pp. 98 - 100, May, 2001 | BibTex
  • A. Topa, C. R. Paiva, A. Barbosa, Continuous and Discrete Spectrum of 3D Waveguides with Complex Media – Radiative and Leakage Behavior, Conf. on Telecommunications - ConfTele, Figueira da Foz, Portugal, Vol. 1, pp. 42 - 46, April, 2001 | BibTex
  • J.R. Costa, P. M. Ramos, C. R. Paiva, A. Barbosa, Amplification of Wavelength Division Multiplexing in Multi-Core Erbium Doped Fiber Amplifiers, Conf. on Telecommunications - ConfTele, Figueira da Foz, Portugal, Vol. 1, pp. 479 - 483, April, 2001,
    | Abstract     | Full text (PDF 296 KBs) | BibTex
  • A. Topa, C. R. Paiva, A. Barbosa, Design of Pseudochiral Omega-NRD Directional Couplers, Asia Pacific Microwave Conf. - APMC, Sidney, Australia, Vol. 1, pp. 1238 - 1241, December, 2000 | BibTex
  • J.R. Costa, P. M. Ramos, C. R. Paiva, A. Barbosa, A Numerical Study of WDM Pulse Equalization in Twin-Core Fiber Amplifiers, IEEE Lasers and Electro Optics Society Annual Meeting - LEOS, Puerto Rico, Puerto Rico, Vol. 1, pp. 275 - 276, November, 2000,
    | Abstract     | Full text (PDF 175 KBs) | BibTex
  • A. Topa, C. R. Paiva, A. Barbosa, Radiation Control on a Step Discontinuity of a Grounded Chiral Slab, International Conf. on Electromagnetics of Complex Media - BIANISOTROPICS, Lisbon, Portugal, Vol. 1, pp. 325 - 328, September, 2000 | BibTex
  • A. Topa, C. R. Paiva, A. Barbosa, Mode Orthogonality in Pseudochiral Planar Waveguides, USNC/URSI National Radio Science Meeting, Salt Lake City, United States, Vol. 1, pp. 65 - 65, July, 2000 | BibTex
  • A. Topa, C. R. Paiva, A. Barbosa, Leakage Effects in Pseudochiral Waveguides, Progress in Electromagnetics Research Symp. - PIERS, Cambridge, United States, Vol. 1, pp. 95 - 95, July, 2000 | BibTex
  • J.R. Costa, P. M. Ramos, C. R. Paiva, A. Barbosa, Wavelength Division Multiplexing With Solitons in Erbium-Dped Fiber Couplers, Progress in Electromagnetics Research Symp. - PIERS, Boston, United States, Vol. 1, pp. 46 - 46, July, 2000 | BibTex
  • J.R. Costa, C. R. Paiva, A. Barbosa, Soliton Amplification in Erbium-Doped Fibers with Co-propagating Noise, International Symp. on Recent Advances in Microwave Technology, Malaga, Spain, Vol. 1, pp. 49 - 52, December, 1999 | BibTex
  • A. Topa, C. R. Paiva, A. Barbosa, Electromagnetic Wave Propagation Characteristics of Chiral and Pseudochiral Waveguides, URSI General Assembly, Toronto, Canada, Vol. 1, pp. 200 - 200, August, 1999 | BibTex
  • A. Topa, C. R. Paiva, A. Barbosa, Leakage Properties of Open 3D Anisotropic Waveguides, USNC/URSI National Radio Science Meeting, Orlando, United States, Vol. 1, pp. 32 - 32, July, 1999 | BibTex
  • J.R. Costa, C. R. Paiva, A. Barbosa, Amplificação de Solitões em Fibras Amplificadoras Dopadas com Érbio, Encontro do Colégio de Electrotecnia da Ordem dos Engenheiros, Lisboa, Portugal, Vol. 1, pp. 133 - 140, May, 1999 | BibTex
  • A. Topa, C. R. Paiva, A. Barbosa, Leaky Modes in Anisotropic Planar Structures with Application to LiNb03 Waveguides, Conf. on Telecommunications - ConfTele, Sesimbra, Portugal, Vol. 1, pp. 476 - 480, April, 1999 | BibTex
  • J.R. Costa, C. R. Paiva, A. Barbosa, A New Numerical Method for Multichannel Soliton Amplification in Erbium-Doped Fiber Amplifiers, Conf. on Telecommunications - ConfTele, Sesimbra, Portugal, Vol. 1, pp. 163 - 166, April, 1999,
    | Abstract     | Full text (PDF 208 KBs) | BibTex
  • A. Topa, C. R. Paiva, A. Barbosa, Leaky Modes in Open Uniaxial Waveguides, Progress in Electromagnetics Research Symp. - PIERS, Taipei, Taiwan, Vol. 1, pp. 940 - 940, March, 1999 | BibTex
  • A. Topa, C. R. Paiva, A. Barbosa, Rigorous Analysis of the Rectangular Waveguide Loaded with a Pseudochiral Omega Slab, Asia Pacific Microwave Conf. - APMC, Yokohama, Japan, Vol. 1, pp. 277 - 280, December, 1998 | BibTex
  • A. Topa, C. R. Paiva, A. Barbosa, Aplicação do Método dos Mínimos Quadrados ao Estudo de Descontinuidades em Degrau em Guias Dieléctricos Planares, Matemática em Telecomunicações - Que Problemas? - MTQP, Coimbra, Portugal, Vol. 1, pp. 37 - 45, September, 1998 | BibTex
  • A. Topa, C. R. Paiva, A. Barbosa, Leaky Modes in Chiral Rib Waveguides, Progress in Electromagnetics Research Symp. - PIERS, Nantes, France, Vol. 2, pp. 517 - 517, July, 1998 | BibTex
  • A. Topa, L. N. Vicente, C. R. Paiva, A. Barbosa, Application of the Least Squares Method to the Analysis of Planar Waveguides for Integrated Optics, Optimization, Coimbra, Portugal, Vol. 1, pp. 63 - 63, July, 1998 | BibTex
  • L. N. Vicente, A. Topa, C. R. Paiva, A. Barbosa, Application of The Least Squares Boundary Residual Method to the Study of Step Discontinuities in Dielectric Planar Waveguides, Matemática em Telecomunicações - Que Problemas? - MTQP, Coimbra, Portugal, Vol. 1, pp. 99 - 108, July, 1998 | BibTex
  • A. Topa, C. R. Paiva, A. Barbosa, Hybrid Mode Propagation in Pseudochiral Uniaxial Waveguides with Rectangular Cross-Section, International Conf. on Electromagnetics of Complex Media - BIANISOTROPICS, Braunschweig, Germany, Vol. 1, pp. 151 - 154, June, 1998 | BibTex
  • A. Topa, C. R. Paiva, A. Barbosa, Omega NRD – Pseudochiral Nonradiative Dielectric Waveguide, Asia Pacific Microwave Conf. - APMC, Hong Kong (SAR), China, Vol. 2, pp. 597 - 600, December, 1997 | BibTex
  • A. Topa, C. R. Paiva, A. Barbosa, A Linear-Operator Formalism for the Analysis of Inhomogeneous Pseudochiral Planar Waveguides, USNC/URSI National Radio Science Meeting, Montreal, Canada, Vol. 1, pp. 81 - 81, July, 1997 | BibTex
  • A. Topa, C. R. Paiva, A. Barbosa, A Linear-Operator Formalism for the Analysis of Planar Layered Waveguides Containing Omega Media: Application to Microwave Devices, Conf. on Telecommunications - ConfTele, Aveiro, Portugal, Vol. 1, pp. 111 - 114, April, 1997 | BibTex
  • A. Topa, C. R. Paiva, A. Barbosa, Radiation Modes of an Asymmetric Chiral Slab Waveguide - A General Approach to a New Canonical Problem, Progress in Electromagnetics Research Symp. - PIERS, Hong Kong, Hong Kong, Vol. 2, pp. 684 - 684, January, 1997 | BibTex
  • A. Topa, C. R. Paiva, A. Barbosa, Step Discontinuity in a Planar Dielectric Chiral Slab: An Improved Analysis, Progress in Electromagnetics Research Symp. - PIERS, Innsbruck, Austria, Vol. 1, pp. 495 - 495, July, 1996 | BibTex
  • A. Topa, C. R. Paiva, A. Barbosa, Rigorous Analysis of a Step Discontinuity in a Planar Dielectric Chiral Slab, International Conf. on Chiral, Bi-isotropic and Bi-anisotropic - CHIRAL, State College, PA, United States, Vol. 1, pp. 131 - 134, October, 1995 | BibTex
  • C. A. Fernandes, P. O. Francês, A. Barbosa, Shaped coverage of elongated cells at millimetre waves using a dielectric lens antenna, European Microwave Conf. - EMC, Bolonha, Italy, Vol. 1, pp. 66 - 70, September, 1995 | BibTex
  • C. A. Fernandes, P. O. Francês, A. Barbosa, Dielectric Lens Antenna for a Mobile Application at Millimetrewaves, ESA Workshop on Lens Antennas, Noordwijk, Netherlands, Vol. 1, pp. -, July, 1994 | BibTex
  • C. Peixeiro, A. Barbosa, Analysis of circular patch antennas printed on multilayered anisotropic structures, Journees Internationales de Nice sur les Antennes - JINA, Nice, France, Vol. 1, pp. 131 - 134, June, 1994 | BibTex
  • C. A. Fernandes, P. O. Francês, A. Barbosa, A Dielectric Lens Antenna for the MBS Demonstrator, RACE Mobile Workshop, Amsterdam, Netherlands, Vol. 1, pp. 17 - 19, May, 1994 | BibTex
  • C. Peixeiro, A. Barbosa, Measurement of anisotropy in microwave substrates, Progress in Electromagnetics Research Symp. - PIERS, Pasadena, United States, Vol. 1, pp. 50 - 50, September, 1993 | BibTex
  • C. Peixeiro, A. Barbosa, Green´s function for the analysis of a circular microstrip antenna embedded in a multilayer anisotropic structure, COST 223 - ESA Workshop on Active Antennas, Noordwijk, Netherlands, Vol. 1, pp. 151 - 156, June, 1992 | BibTex
  • C. Peixeiro, A. Barbosa, Rigorous analysis of coaxial feeds for microstrip antennas in multilayered anisotropic substrates:comparison of numerical methods, Progress in Electromagnetics Research Symp. - PIERS, Cambridge, United States, Vol. 1, pp. 598 - 598, September, 1991 | BibTex
  • L. M. Correia, A. Barbosa, An approximate (symmetric) combined field integral equation for the analysis of scattering by conducting bodies in the ressonance region, Appl. Computational Electromagnetics Society Conf. - ACES, Monterey, United States, Vol. 1, pp. 190 - 197, March, 1991 | BibTex
  • C. Peixeiro, A. Barbosa, Far field radiation pattern of a vertical feed probe embedded in a thick anisotropic multilayered structure, Journees Internationales de Nice sur les Antennes - JINA, Nice, France, Vol. 1, pp. 349 - 352, July, 1990 | BibTex
  • L. M. Correia, A. Barbosa, An approximate (symmetric) magnetic field integral equation for the analysis of scattering by conducting bodies, IEEE AP-S/URSI International Symp., Dallas, United States, Vol. 2, pp. 902 - 905, June, 1990 | BibTex
  • C. A. Fernandes, A. Barbosa, Wiener-Hopf Analysis of the Radiation from a Finite Length Multifilar Helix Fed by a Circular Waveguide (abstract), IEEE AP-S/URSI International Symp., Dallas, United States, Vol. 1, pp. 168 - 168, May, 1990 | BibTex
  • L. M. Correia, A. Barbosa, The augmented magnetic field integral equation with triangular patches for the analysis of scattering by conducting bodies, Appl. Computational Electromagnetics Society Conf. - ACES, Monterey, United States, Vol. 1, pp. 422 - 429, March, 1990 | BibTex
  • C. A. Fernandes, A. Barbosa, Radiation From a Multifilar Helix Fed by a Circular Waveguide, International Symp. on Antennas and Propagation - ISAP, Toquio, Japan, Vol. 1, pp. 505 - 508, August, 1989 | BibTex
  • C. Peixeiro, A. Barbosa, Analysis of a coaxial probe radiating through a thick uniaxial anisotropic two layer structure, IEEE AP-S/URSI International Symp., San Jose, United States, Vol. 1, pp. 1707 - 1710, June, 1989 | BibTex
  • C. R. Paiva, A. Barbosa, A. Topa, A new analytical method for the study of layered anisotropic waveguides, IEEE Mediterranean Electrotechnical Conference - MELECON, Lisboa, Portugal, Vol. 89, pp. 691 - 694, April, 1989 | BibTex
  • L. M. Correia, A. Barbosa, An algorithm for the choice of integral equation for the analysis of scattering by arbitrary shape conducting bodies, Journees Internationales de Nice sur les Antennes - JINA, Nice, France, Vol. 1, pp. 53 - 56, November, 1988 | BibTex
  • C. Peixeiro, A. Barbosa, Radiation by a probe through a thick uniaxially anisotropic substrate-superstrate configuration, COST 213 / KUL-Phased Array Workshop, Leuven, Belgium, Vol. 1, pp. 47 - 52, June, 1988 | BibTex
  • L. M. Correia, A. Barbosa, A procedure for the analysis of scattering by arbitrary shape conducting bodies in the ressonance region, IEEE AP-S/URSI International Symp., Syracuse, United States, Vol. 2, pp. 898 - 901, June, 1988 | BibTex
  • C. R. Paiva, A. Barbosa, A. Topa, Analysis of the conductor-backed uniaxial slab with upper-shielding in the polar configuration, Simpósio de Electrónica das Telecomunicações, Porto, Portugal, Vol. 3, pp. xx - xx, May, 1988 | BibTex
  • C. R. Paiva, A. Barbosa, Analysis of the uniaxial dielectric ridge waveguide with vertical optical axis by the effective-dielectric constant method, Simpósio de Electrónica das Telecomunicações, Porto, Portugal, Vol. 3, pp. xx - xx, May, 1988 | BibTex
  • C. A. Fernandes, A. Barbosa, Complex Wave Radiation of a Sheath Helix Excited in the n=1 Modes, IEEE Mediterranean Electrotechnical Conference - MELECON, Madrid, Spain, Vol. 3, pp. 157 - 160, October, 1985 | BibTex
  • L. M. Correia, J. Figanier, A. Barbosa, Scattering by 3-dimensional conducting bodies with edges:assessment of a numerical method, IEEE Mediterranean Electrotechnical Conference - MELECON, Madrid, Spain, Vol. 3, pp. 255 - 258, June, 1985 | BibTex

Closed Projects9

Acronym Name Funding Agency Start date Ending date
ACE Antenna Centre of Excellence EU/FP6 30-01-2004 31-12-2007
CHIRAL 2D and 3D Chiral and Omega Structures:Guidance,Leakage and Radiation Behaviour FCT/POSI 01-02-2002 30-09-2005
COMPACT Compact Range for millimeter wave antenna measurements using dielectric lenses FCT/POCTI 02-01-2003 28-02-2005
COST 284 Innovative Antennas for Emerging Terrestrial and Space-Based Applications EU/COST 21-02-2002 04-10-2006
FS Fiber Solitons: Propagation, Amplification and Switching FCT/POSI 01-10-2000 01-10-2004
IMP IMP - Instituto Marítimo Portuário EID 03-04-2002 19-04-2002
MEIOS ARTIFICIAIS Propagation and Radiation in Complex Media Using Planar Technology CRUP 01-01-2002 31-12-2003
MICROCELLS Wideband mobile communications in microcells:propagation models and antenna design JNICT/STRADA 01-03-1992 27-03-1995
Non Linear and Chiroguides Microwave and optical devices for transmission and switching using linear and nonlinear media FCT/PRAXIS 15-05-1997 21-02-2001
1Awards
  • S.A. Matos, C. R. Paiva, A. Barbosa, Honorable mention from the Student Paper Contest associated with the 2009 IEEE International Symposium on Antennas and Propagation, A Spacetime Algebra Approach to Moving Bi-Isotropic Media, 01-06-2009
9Miscellaneous
  • S.A. Matos, C. R. Paiva, A. Barbosa, Beyond Isotropic Metamaterials: From Anisotropic to Bianisotropic Media Using the Geometric Perspective Provided by Clifford Algebra, Invited Talks, 01-07-2009
  • A. Barbosa, PIRM 2001-Problems of Interaction of Radiation with Matter, Member of Technical Committee, 29-10-2001
  • A. Barbosa, A. Topa, 8th International Conference on Electromagnetics of Complex Media-BIANISOTROPICS 2000, Editor of Conference Proceedings, ISBN 972-98115-1-2, 01-09-2000
  • A. Barbosa, COST 260-Smart Antennas-CAD and Technology, National Delegate, 01-07-1997
  • A. Barbosa, COST 245-Active Phased Arrays and Array Fed Antennas, National Delegate, 01-01-1993
  • A. Barbosa, IEEE Mediterranean Electrotechnical Conference-MELECON'89, Editor of Conference Proceedings, 01-09-1989
  • A. Barbosa, URSI-Commission B-Fields and Waves, National Delegate, 01-06-1989
  • A. Barbosa, COST 223-Active Array Antennas for Future Satellite and Terrestrial Communications, National Delegate, 01-01-1989
  • A. Barbosa, COST 213-Electronically Steerable Phased Array Antennas for Future Satellite and Terrestrial Communications, National Delegate, 01-06-1987
4Conference Committees
  • URSI International Symp. in Electromagnetic Theory, 2010
  • BIANISOTROPICS 2000-8th Internacional Conference on Electromagnetics of Complex Media, Conference Chairman, 2000
  • Conference on Telecommunications-ConfTele 99, Technical Programme Chairman, 1999
  • IEEE Mediterranean Electrotechnical Conference,MELECON´89, Technical Programme Chairman, 1989
9Refereeing Journals
  • IEEE Transactions on Antennas and Propagation
    2014, 2 review(s); 2013, 4 review(s); 2012, 3 review(s); 2011, 5 review(s); 2010, 8 review(s); 2009, 2 review(s); 2008, 1 review(s); 2007, 1 review(s); 2006, 2 review(s); 2005, 2 review(s); 2002, 1 review(s);
  • IEEE Antennas and Wireless Propagation Letters
    2011, 1 review(s); 2010, 1 review(s);
  • IEEE Transactions on Microwave Theory and Techniques
    2014, 1 review(s); 2010, 2 review(s); 2009, 2 review(s); 2008, 1 review(s); 2007, 1 review(s); 2006, 3 review(s); 2005, 2 review(s); 2004, 1 review(s); 2000, 1 review(s);
  • IET Microwaves, Antennas and Propagation
    2009, 1 review(s); 2008, 2 review(s); 2006, 4 review(s); 1995, 1 review(s); 1994, 1 review(s);
  • IEEE Microwave Guidded Wave Letters
    1999, 1 review(s);
  • Journal of Electromagnetic Waves and Applications
    1999, 1 review(s); 1996, 2 review(s); 1992, 1 review(s);
  • Radio Science
    1998, 1 review(s);
  • Progress in Electromagnetics Research
    2011, 1 review(s);
  • IEEE Microwave Magazine
    2011, 1 review(s);
2Refereeing Conferences
  • European Microwave Week/European Microwave Conf.
    2013, 1 review(s); 2011, 2 review(s); 2010, 1 review(s); 2009, 1 review(s); 2008, 1 review(s); 2007, 1 review(s); 2006, 1 review(s); 2005, 1 review(s);
  • URSI International Symp. in Electromagnetic Theory
    2010, 1 review(s);
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