Creating and sharing knowledge for telecommunications
... António Luís Campos da Silva Topa

Senior Researcher

António Topa

Academic position: Assistant Professor
Joining date: 03-01-1995
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



Scientific Achievements

  • PhD, Instituto Superior Técnico, 27-03-1998
  • MSc, Instituto Superior Técnico, 18-12-1989
  • Licenciatura, Instituto Superior Técnico, 31-07-1985
  • Ordem dos Engenheiros, 01-07-1989, Membro
  • IEEE - Institute of Electrical and Electronics Engineers, 01-05-1989, Member
  • Instituto Superior Técnico, 04-12-1984, PhD
As Supervisor
  • 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
  • S. Maslovski, H. F. Ferreira, I. Medvedev, N. Brás, A. Abraray, T. Fernandes, H. A. Silva, A. Topa, Conjugate impedance matched metamaterials: Physical modeling and wave interaction effects, Journal of Physics: Conference Series, Vol. 1092, No. 012084, pp. 1 - 4, September, 2018 | BibTex
  • I. V. Neves, A. Topa, M. Neves, Waveguide Dispersion in a Strongly Biaxial Anisotropic Fiber: An Analytical Solution, Journal of Lightwave Technology, Vol. 30, No. 14, pp. 2262 - 2270, July, 2012,
    | 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
  • 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
  • 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
  • F. M. Janeiro, C. R. Paiva, A. Topa, Guidance and leakage properties of chiral optical fibers, Journal of the Optical Society of America B: Optical Physics, Vol. 19, No. 11, pp. 2558 - 2566, November, 2002 | 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
  • 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
  • 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. 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
  • P. Sustelo, A. Topa, Modeling of Radar Pulse Compression Using Adapted Filters, EIEC Encuentro Iberico de Electromagnetismo Computacional EIEC, Cádiz, Spain, Vol., pp. -, November, 2023 | Full text (PDF 198 KBs) | BibTex
  • A. Duarte, A. Topa, Synthetic Aperture Radar Imagery using SOCET GXP®, EIEC Encuentro Iberico de Electromagnetismo Computacional EIEC, Núria (Girona), Spain, May, 2022,
    | Abstract
    | Full text (PDF 2 MBs) | BibTex
  • P. Lopes, A. Topa, Design and Optimization for Mobile Networks in Stadium Environments, Encuentro Ibérico de Electromagnetismo Computacional - EIEC, Santander, Spain, October, 2019 | Full text (PDF 48 KBs) | BibTex
  • B. Rebelo, A. Topa, Public Protection and Disaster Relief network for the eastern group, Encuentro Ibérico de Electromagnetismo Computacional - EIEC, Santander, Spain, October, 2019 | Full text (PDF 106 KBs) | BibTex
  • S. Maslovski, T. Fernandes, N. Brás, H. A. Silva, A. Topa, Energy harvesting with conjugate-impedance matched metamaterials, Progress in Electromagnetics Research Symp. - PIERS, St. Petersburg, Russia, Vol. -, pp. 1449 - 1449, May, 2017 | BibTex
  • A. Topa, Mode Orthogonality in Metamaterial waveguides, Encuentro Ibérico de Electromagnetismo Computacional - EIEC, Oviedo, Spain, Vol. 1, pp. 1 - 1, November, 2016 | Full text (PDF 8 KBs) | BibTex
  • M. Garcia, A. Topa, Gesture Recognition by Electromagnetic-Wave Reflection, Encuentro Ibérico de Electromagnetismo Computacional - EIEC, Baeza, Spain, Vol. 1, pp. 1 - 2, May, 2015,
    | Abstract
    | BibTex
  • A. Topa, Linear-Operator Theory for Inhomogeneous Omega Planar Waveguides, Progress in Electromagnetics Research Symp. - PIERS, Stockholm, Sweden, Vol. 1, pp. 1 - 1, August, 2013,
    | Abstract
    | BibTex
  • A. Topa, Recent Advances on the Analysis and Design of Metamaterial Waveguides, Encuentro Ibérico de Electromagnetismo Computacional - EIEC, Dénia, Spain, Vol. 1, pp. 1 - 1, May, 2013,
    | Abstract
    | BibTex
  • A. Topa, Metamaterial Waveguides, URSI Seminar of the Portuguese Committee, Lisboa, Portugal, Vol. 1, pp. 1 - 1, November, 2012,
    | Abstract
    | BibTex
  • A. Topa, Linear Operator Formalism in the Analysis of Omega Planar Layered Waveguides, WASET International Conf. on Electrical, Computer, Electronics and Communication Engineering - ICECECE, Paris, France, Vol. 1, pp. 1 - 1, August, 2012 | 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, Full-Wave Analytical Methods for the Electromagnetic Characterization of Metamaterial Waveguides, International Conf. on Electromagnetics in Advanced Applications - ICEAA, Torino, Italy, Vol. 1, pp. 1 - 1, September, 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
  • 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
  • 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
  • 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
  • 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
  • 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
  • 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
  • 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
  • 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
  • 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
  • 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
  • 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
  • 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
  • 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
  • R. Rosa, P. Oliveira, A. Topa, C. A. Fernandes, Visualization Tool for the Propagation of Electromagnetic Waves, Conf. on Telecommunications - ConfTele, Peniche, Portugal, Vol. 1, pp. 93 - 96, May, 2007 | 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, S.A. Matos, A. Topa, C. R. Paiva, Comportamento Dispersivo de Modos Leaky em Guias Metamateriais DNG, Encuentro Ibérico de Electromagnetismo Computacional - EIEC, Seia, Portugal, Vol. 1, pp. 29 - 32, September, 2005 | 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
  • F. M. Janeiro, A. Topa, C. R. Paiva, Surface and Leaky Modes in a Symmetric DPS-DNG Slab, IEEE AP-S/URSI International Symp., Washington, United States, Vol. -, pp. - - -, July, 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
  • F. M. Janeiro, A. Topa, C. R. Paiva, Reflection and Transmission at a Chiral Planar Interface, Conf. on Telecommunications - ConfTele, Tomar, Portugal, Vol. 1, pp. - - -, 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, Leaky modes in planar waveguides containing DNG metamaterials, International Conf. on Electromagnetics in Advanced Applications - ICEAA, Torino, Italy, Vol. 1, pp. 447 - 450, September, 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, Contra-Directional Coupling in NRD Directional Coupler with a Metamaterial Slab, URSI General Assembly, Maastricht, Netherlands, Vol. 1, pp. 1878 - 1878, August, 2002 | 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
  • F. M. Janeiro, A. Topa, C. R. Paiva, Leakage characteristics of open chirowaveguides – Dielectric slabs and optical fibers, International Conf. on Electromagnetics of Complex Media - BIANISOTROPICS, Marrakech, Morocco, Vol. 1, pp. 69 - 69, May, 2002 | BibTex
  • H. M. Ramos, F. M. Janeiro, A. Topa, C. R. Paiva, Material and waveguide dispersion in a symmetric planar chirowaveguide, International Conf. on Electromagnetics of Complex Media - BIANISOTROPICS, Marrakech, Morocco, Vol. 1, pp. 75 - 75, 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
  • F. M. Janeiro, A. Topa, C. R. Paiva, Semi-Leaky Modes in Chiral Optical Fibers, IEEE Lasers and Electro Optics Society Annual Meeting - LEOS, San Diego, United States, Vol. 1, pp. 897 - 898, November, 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
  • F. M. Janeiro, A. Topa, C. R. Paiva, Optimal Dispersion Maps in Filtered WDM Soliton Systems, Conf. on Telecommunications - ConfTele, Figueira da Foz, Portugal, Vol. 1, pp. 493 - 496, April, 2001 | 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
  • 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
  • F. M. Janeiro, A. Topa, C. R. Paiva, Dispersion-Managed Wavelength Division Multiplexed Soliton Systems with Filtering, Progress in Electromagnetics Research Symp. - PIERS, Boston, United States, Vol. 1, pp. 45 - 45, July, 2000 | 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
  • F. M. Janeiro, A. Topa, C. R. Paiva, Gestão da Dispersão em Sistemas de Comunicação Óptica WDM com Solitões, Encontro do Colégio de Electrotecnia da Ordem dos Engenheiros, Lisboa, Portugal, Vol. 1, pp. 127 - 132, 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
  • F. M. Janeiro, A. Topa, C. R. Paiva, A New Design Procedure to Select Optimal Dispersion Maps for WDM Soliton Communication Systems, Conf. on Telecommunications - ConfTele, Sesimbra, Portugal, Vol. 1, pp. 167 - 171, April, 1999 | 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. 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
  • 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

Closed Projects5

Acronym Name Funding Agency Start date Ending date
CHIRAL 2D and 3D Chiral and Omega Structures:Guidance,Leakage and Radiation Behaviour FCT/POSI 01-02-2002 30-09-2005
FS Fiber Solitons: Propagation, Amplification and Switching FCT/POSI 01-10-2000 01-10-2004
MEIOS ARTIFICIAIS Propagation and Radiation in Complex Media Using Planar Technology CRUP 01-01-2002 31-12-2003
MMSUPER Metamaterial superabsorbers for harnessing wireless power IT, FCT 01-12-2016 01-12-2018
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
  • 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
  • Encuentro Ibérico de Electromagnetismo Computacional - EIEC, Technical Programme Committee, 2007
  • IV Encontro Ibérico de Electromagnetismo Computacional, Technical Programme Chairman, 2005
  • ConfTele 2005 - 5th Conference on Telecommunications, Organizing Committee, 2004
  • PIRM 2001 - Problems of Interaction of Radiation with Matter, Technical Programme Committee, 2001
  • BIANISOTROPICS 2000 - 8th International Conference on Electromagnetics of Complex Media, Organizing Committee, 2000
  • ConfTele'99 - 2nd Conference on Telecommunications, Organizing Committee, 1999
  • IEEE Transactions on Microwave Theory and Techniques
    2007, 1 review(s);

  • 2007, 1 review(s);

Activities from this researcher fall under the following United Nations Strategic Development Goals (SDGs):