Creating and sharing knowledge for telecommunications

IT Member Profile

... Mário António Patrício Carreira Vala

PhD Student

Mário Vala

Academic position: PhD Student
Joining date: 01-01-2018
Roles in IT: PhD Student
Thematic Line: Wireless Technologies
Group: Antennas and Propagation – Lr

Email: Send Email
Address: IT Branch – Leiria
Morro do Lena - Alto do Vieiro
Leiria
2411 - 901
Tel: 244820340
Fax: 244820310

Scientific Achievements

  • Radiowave propagation in wildfires, DEEC/IST - Department of Electrical and Computer Engineering, PhD Student, Mário António Patrício Carreira Vala, Supervisor: R. F. S. Caldeirinha, Co-supervisor: C. A. Fernandes, fev-2018 - dez-2025
1Books Chapters
  • T.O. Oliveira, M. Vala, S. Faria, J. R. Reis, N. Leonor, R. F. S. Caldeirinha, A Study on Small Sensor Node Antenna Performance Camouflaged Under Grassland Fire, Chapter in, Internet of Things. Technology and Applications. IFIPIoT 2021., Camarinha-Matos L.M., Heijenk G., Katkoori S., Strous L., Springer Nature Switzerland AG, Switzerland, 2022
8Papers in Journals
  • A. Fockert, M. Eleveld, J. M. Felício, T. Costa, M. Vala, P. M. Marques, N. Leonor, A. A. Moreira, J.R. Costa, R. F. S. Caldeirinha, S.A. Matos, C. A. Fernandes, N. Fonseca, M. Simpson, A. Marino, A. Perez-Portero, A. Gonga, O. Burggraaff, S. Garaba, S. Salama, Y. Xiao, R. Calvert, T. Bremer, P. Maagt, Assessing the detection of floating plastic litter with advanced remote sensing technologies in a hydrodynamic test facility, Scientific Reports, Vol. 14, No. 1, pp. -, October, 2024,
    | Abstract     | BibTex
  • J. M. Felício, T. Costa, M. Vala, N. Leonor, J.R. Costa, P. M. Marques, A. A. Moreira, R. F. S. Caldeirinha, S.A. Matos, C. A. Fernandes, N. Fonseca, P. Maagt, Feasibility of Radar-based Detection of Floating Macroplastics at Microwave Frequencies, IEEE Transactions on Antennas and Propagation, Vol. 72, No. 3, pp. 2766 - 2779, March, 2024,
    | Abstract     | BibTex
  • M. Vala, S. Faria, P. Coimbra, N. Leonor, J. M. Felício, C. A. Fernandes, C. Salema, R. F. S. Caldeirinha, Effects of Fire Plumes from Pine Needles on Small-scale Fading in Radiowave Propagation, IEEE Transactions on Antennas and Propagation, Vol. 71, No. 4, pp. 3473 - 3484, April, 2023,
    | Abstract     | BibTex
  • S. Faria, M. Vala, P. Coimbra, N. Leonor, J. M. Felício, C. A. Fernandes, C. Salema, R. F. S. Caldeirinha, Measurement Trials and Modeling of Radio Propagation Through Small-scale Fire using Pinus Pinaster Fuel Bed, IEEE Antennas and Wireless Propagation Letters, Vol. 22, No. 3, pp. 581 - 585, March, 2023,
    | Abstract     | BibTex
  • N. Leonor, S. Faria, M. Vala, R. F. S. Caldeirinha, A Combined ITM and LITU-R Model for Enhanced Radio Coverage Predictions of Mission Critical Communications in Mountainous Vegetated Terrains, IEEE Antennas and Wireless Propagation Letters, Vol. 21, No. 9, pp. 1777 - 1781, September, 2022,
    | Abstract     | Full text (PDF 3 MBs) | BibTex
  • J. R. Reis, M. Vala, T.O. Oliveira, T. Fernandes, R. F. S. Caldeirinha, Metamaterial-Inspired Flat Beamsteering Antenna for 5G Base Stations at 3.6 GHz, Sensors, Vol. 21, No. 23, pp. 8116 - 8116, December, 2021,
    | Abstract     | Full text (PDF 2 MBs) | BibTex
  • M. Vala, S. Faria, N. Leonor, J. M. Felício, C. A. Fernandes, C. Salema, R. F. S. Caldeirinha, Complex permittivity study of a Pinus Pinaster needle bed on fire, URSI Radio Science Bulletin, Vol. 2021, No. 378, pp. 14 - 21, September, 2021 | BibTex
  • J. R. Reis, M. Vala, R. F. S. Caldeirinha, Review paper on Transmitarray Antennas, IEEE Access, Vol. 7, No. 1, pp. 94171 - 94188, December, 2019,
    | Abstract     | BibTex
28Papers in Conferences
  • S. Faria, M. Vala, J. M. Felício, C. Salema, R. F. S. Caldeirinha, N. Leonor, C. A. Fernandes, Influence of Fire Whirls on Radiowave Propagation, European Conference on Antennas and Propagation - EuCap, Stockholm, Sweden, March, 2025 | BibTex
  • M. Vala, J. M. Felício, T. Costa, N. Leonor, J.R. Costa, P. M. Marques, A. A. Moreira, S.A. Matos, R. F. S. Caldeirinha, C. A. Fernandes, N. Fonseca, P. Maagt, Medium-Scale Measurement Campaign for Floating Macroplastic Detection in a Realistic Environment at X-Band Frequencies, European Conference on Antennas and Propagation - EuCap, Estocolmo, Sweden, March, 2025,
    | Abstract     | BibTex
  • M. Vala, J. R. Reis, J. M. Felício, N. Leonor, C. A. Fernandes, R. F. S. Caldeirinha, Wind-Induced Backscatter Clustering from Vegetation at W-Band, European Conference on Antennas and Propagation - EuCap, Glasgow, United Kingdom, March, 2024 | BibTex
  • M. Vala, J. M. Felício, T. Costa, N. Leonor, J.R. Costa, P. M. Marques, A. A. Moreira, S.A. Matos, R. F. S. Caldeirinha, C. A. Fernandes, N. Fonseca, P. Maagt, Small-Scale Passive Millimetre-Wave Imaging Measurements for Marine Litter Detection at W-Band, European Conference on Antennas and Propagation - EuCap, Glasgow, United Kingdom, March, 2024 | BibTex
  • T. Costa, J. M. Felício, M. Vala, N. Leonor, J.R. Costa, P. M. Marques, A. A. Moreira, R. F. S. Caldeirinha, S.A. Matos, C. A. Fernandes, N. Fonseca, P. Maagt, Feature Selection for Identifying Optimal Microwave Frequencies to Detect Floating Macroplastic Litter in C and X Bands, European Conference on Antennas and Propagation - EuCap, Glasgow, United Kingdom, Vol., pp. -, March, 2024,
    | Abstract     | BibTex
  • T. Costa, J. M. Felício, M. Vala, N. Leonor, J.R. Costa, P. M. Marques, A. A. Moreira, R. F. S. Caldeirinha, S.A. Matos, C. A. Fernandes, N. Fonseca, P. Maagt, Detection of Low Permittivity Floating Plastic Sheets at Microwave Frequencies, European Conference on Antennas and Propagation - EuCap, Florence, Italy, Vol., pp. -, March, 2023,
    | Abstract     | BibTex
  • M. Vala, J. M. Felício, T. Costa, N. Leonor, J.R. Costa, P. M. Marques, A. A. Moreira, S.A. Matos, R. F. S. Caldeirinha, C. A. Fernandes, N. Fonseca, P. Maagt, On the Feasibility of Using Passive mm-Wave Imaging for Marine Litter Detection at the W-Band, European Conference on Antennas and Propagation - EuCap, Florence, Italy, Vol., pp. -, March, 2023,
    | Abstract     | BibTex
  • L. Duarte, M. Vala, C. Ribeiro, L. Alves, C. A. Fernandes, R. F. S. Caldeirinha, A feasibility study on real-time concealed object detection in foliage using STDCC radar, 13th IEEE/IET International Symposium on Communication Systems, Networks and Digital Signal Processing CSNDSP, Porto, Portugal, July, 2022,
    | Abstract     | BibTex
  • T.O. Oliveira, J. R. Reis, M. Vala, R. F. S. Caldeirinha, A Microstrip Quasi-Yagi Antenna based on Optimised Waning Crescent Elements for WSN, URSI URSI Atlantic Asia-Pacific Radio Science Meeting URSI AT-AP-RASC, Gran Canaria, Spain, June, 2022,
    | Abstract     | BibTex
  • S. Faria, M. Vala, N. Leonor, J. M. Felício, C. A. Fernandes, C. Salema, R. F. S. Caldeirinha, Modelling of Radiowave Propagation Through Small-scale Forest Fire, URSI Atlantic Radio Science Meeting AT-AP-RASC, Gran Canaria, Spain, May, 2022,
    | Abstract     | BibTex
  • S. Faria, M. Vala, N. Leonor, J. M. Felício, C. A. Fernandes, C. Salema, R. F. S. Caldeirinha, Measurement Trials of Radiowave Propagation Through Pinus Pinaster Fuel Bed Under Fire, European Conference on Antennas and Propagation - EuCap, Madrid, Spain, March, 2022,
    | Abstract     | BibTex
  • G. Ramos, M. Vala, R. F. S. Caldeirinha, N. Leonor, L. Mello, Angle of Arrival Retrieval from Power Angular Spectrum using Antenna Pattern Deconvolution at K-band, European Conference on Antennas and Propagation - EuCap, Madrid, Spain, March, 2022,
    | Abstract     | BibTex
  • M. Vala, S. Faria, N. Leonor, J. M. Felício, C. A. Fernandes, C. Salema, R. F. S. Caldeirinha, Complex Permittivity Study of a Pinus Pinaster Needle Bed on Fire, ANACOM URSI 15.º Congresso do Comité Português da URSI ''Sustentabilidade ambiental no uso do espectro radioelétrico, Leiria, Portugal, November, 2021,
    | Abstract     | BibTex
  • S. Faria, M. Vala, N. Leonor, J. M. Felício, C. A. Fernandes, C. Salema, R. F. S. Caldeirinha, Electromagnetic study of complex permittivity on a medium-scale flat terrain fire scenario, Simposium Nacional de la Unión Científica Internacional de Radio, Vigo, Spain, September, 2021,
    | Abstract     | BibTex
  • J. R. Reis, T.O. Oliveira, M. Vala, R. F. S. Caldeirinha, High Performance Antennas for Early Fire Detection Wireless Sensor Networks at 2.4 GHz, IEEE IEEE IEEE-APS Topical Conference on Antennas and Propagation in Wireless Communications APWC2021 APWC2021, Hawai, United States, August, 2021,
    | Abstract     | BibTex
  • S. Faria, M. Vala, P. Coimbra, J. M. Felício, N. Leonor, C. A. Fernandes, C. Salema, R. F. S. Caldeirinha, Analytical Studies of Refractive Index Variation in Pine Needles Media under Wildfire Conditions, European Conference on Antennas and Propagation - EuCap, Düsseldorf, Germany, March, 2021,
    | Abstract     | BibTex
  • T.O. Oliveira, J. R. Reis, M. Vala, R. F. S. Caldeirinha, High-Gain Wideband Parasitic Microstrip Antenna for 5G and IoT at 26 GHz, Conf. on Telecommunications - ConfTele, Leiria, Portugal, February, 2021,
    | Abstract     | BibTex
  • M. Vala, J. R. Reis, R. F. S. Caldeirinha, On the Practical Limitations of Scalable Electronic 2D Beamsteering Using Metamaterials at Micro and Millimetre-wave Frequencies, Telecoms Conference ConfTELE, Leiria, Portugal, February, 2021,
    | Abstract     | BibTex
  • S. Faria, M. Vala, P. Coimbra, N. Leonor, J. M. Felício, C. A. Fernandes, C. Salema, R. F. S. Caldeirinha, Radiowave Propagation Modelling of Dual Wildfire Front Spreading over Hilly Terrain at 700 MHz, Telecoms Conference ConfTELE, Leiria, Portugal, February, 2021,
    | Abstract     | BibTex
  • P. Coimbra, S. Faria, M. Vala, J. M. Felício, C. A. Fernandes, N. Leonor, R. F. S. Caldeirinha, C. Salema, Experimental Setup for Radio Characterization of Fire at Microwave Frequencies, Telecoms Conference ConfTELE, Leiria, Portugal, February, 2021,
    | Abstract     | BibTex
  • S. Faria, M. Vala, P. Coimbra, J. M. Felício, N. Leonor, C. A. Fernandes, C. Salema, R. F. S. Caldeirinha, Comparative Study of Computational Electromagnetics Applied to Radiowave Propagation in Wildfires, URSI International Union of Radio Science General Assembly & Scientific Symposium URSI GASS, Rome, Italy, September, 2020,
    | Abstract     | Full text (PDF 381 KBs) | BibTex
  • J. R. Reis, M. Vala, T. Fernandes, R. F. S. Caldeirinha, Metamaterial-inspired Flat-Antenna Design for 5G Small-cell Base-Stations Operating at 3.6 GHz, 12th IEEE/IET International Symposium on Communication Systems, Networks and Digital Signal Processing CSNDSP, Porto, Portugal, July, 2020,
    | Abstract     | BibTex
  • R. F. S. Caldeirinha, J. R. Reis, M. Vala, A novel dual-polarised transmitarray form beamsteering at 28 GHz, IET IET Antennas and Propagation Conference IET APC, Birmingham, United Kingdom, November, 2019 | BibTex
  • R. F. S. Caldeirinha, J. R. Reis, M. Vala, On the Practical Limitations of Electronic Beamsteering using Metamaterials at 28 GHz, IEEE IEEE-APS Topical Conference on Antennas and Propagation in Wireless Communications APWC2019, Granada, Spain, Vol. -, pp. - - -, September, 2019,
    | Abstract     | BibTex
  • J. R. Reis, M. Vala, R. F. S. Caldeirinha, Novel Electronically Reconfigurable Transmitarray for 2D Beamsteering: Emerging Applications, Conf. on Telecommunications - ConfTele, Lisbon, Portugal, Vol. 0, pp. 0 - 0, June, 2019,
    | Abstract     | BibTex
  • M. Vala, J. R. Reis, R. F. S. Caldeirinha, A 28 GHz Fully 2D Electronic Beamsteering Transmitarray for 5G and future RADAR applications, Loughborough Antennas and Propagation Conf. – LAPC, Loughborough, United Kingdom, November, 2018,
    | Abstract     | BibTex
  • M. Vala, A. Sardo, J. R. Reis, R. F. S. Caldeirinha, Electronic Reconfigurable Beam-redirecting Metasurfaces for Outdoor-indoor Radio Coverage Enhancement at 5.2 GHz, IEEE International Symp. on Personal, Indoor and Mobile Radio Commun - PIMRC, Bologne, Italy, Vol. 0, pp. 0 - 0, September, 2018,
    | Abstract     | BibTex
  • R. F. S. Caldeirinha, J. R. Reis, M. Vala, A. Sardo, A. Hammoudeh, Nigel Copner Copner, Electronically Reconfigurable Active Metamaterials for 2D Beamsteering, Encuentro Ibérico de Electromagnetismo Computacional - EIEC, Coimbra, Portugal, May, 2018 | BibTex
1Patents
  • R. F. S. Caldeirinha, J. R. Reis, M. Vala, Célula unitária, superfície de mudança de fase para direcionamento de ondas eletromagnéticas, sistema e método relacionados, PT115901, National, Granted, 08-11-2019, Portugal,
    | Abstract

Closed Projects3

Acronym Name Funding Agency Start date Ending date
MARES Satellite-based microwave remote sensing for marine litter mapping ESA-ESTEC 04-10-2021 31-12-2023
Propagation5G Study and optimisation of propagation models for 5G FCT/CAPES 01-04-2019 31-05-2022
RESCuE-TOOL Radio coverage for emergency communication systems to operate under critical wildfire environments TOOL FCT 31-12-2018 27-02-2023
4Awards
  • M. Vala, S. Faria, N. Leonor, J. M. Felício, C. A. Fernandes, C. Salema, R. F. S. Caldeirinha, Complex Permittivity Study of a Pinus Pinaster Needle Bed on Fire, Best Student Paper Award - 1st Place at ANACOM: 15.º Congresso do Comité Português da URSI, 01-11-2021
  • M. Vala, J. R. Reis, R. F. S. Caldeirinha, On the Practical Limitations of SCalable Electronic 2D Beamsteering Using Metamaterials at MIcro and Millimetre-wave Frequencies, ConfTELE 2021 Top 10% Best Paper Award. Seven papers (10%) were nominated for consideration for this award by the Reviewers and the Technical Program Committee., 01-02-2021
  • S. Faria, M. Vala, P. Coimbra, N. Leonor, J. M. Felício, C. A. Fernandes, C. Salema, R. F. S. Caldeirinha, Radiowave Propagation Modelling of Dual Wildfire Front Spreading Over Hilly Terrain at 700 MHz, ConfTELE 2021 Top 10% Best Paper Award. Seven papers (10%) were nominated for consideration for this award by the Reviewers and the Technical Program Committee., 01-02-2021
  • J. R. Reis, M. Vala, R. F. S. Caldeirinha, Selected Papers at CSNDSP2020, Selected Papers for journal extension: "Metamaterial-inspired fat-antenna design for 5G base-stations operating at 3.6 GHz", J. R. Reis; M. Vala; and R.F.S. Caldeirinha, IEEE/IET International Symposium on Communication Systems, Networks and Digital Signal Processing - CSNDSP, Porto, Portugal, July, 2020., 01-07-2020
1Prototypes
  • J. R. Reis, M. Vala, R. F. S. Caldeirinha, Metamaterial-inspired flat beamsteering antenna for 5G

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