Nuno Ricardo Cordeiro Leonor

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

16Papers in Journals

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 | Full text (PDF 1 MB) | 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. 1, No. 1, pp. 1 - 1, January, 2023,
| Abstract | BibTex
N. Leonor, S. Faria, G. Ramos, P. Castellanos, C. Ron, L. Mello, R. F. S. Caldeirinha, Site-specific Radio Propagation Model for Macrocell Coverage at Sub-6 GHz Frequencies, IEEE Transactions on Antennas and Propagation, Vol. 70, No. 10, pp. 9706 - 9715, October, 2022,
| Abstract | Full text (PDF 5 MBs) | 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
L. Ma, K. Guan, D. Yan, D. He, N. Leonor, B Ai, J. Kim, Satellite‐Terrestrial Channel Characterization in High‐Speed Railway Environment at 22.6 GHz, Radio Science, Vol. N/A, No. N/A, pp. 1 - 1, March, 2020,
| Abstract | BibTex
N. Leonor, T. Fernandes, M. Sanchez, R. F. S. Caldeirinha, A 3D Model for Millimeter-Wave Propagation Through Vegetation Media Using Ray-Tracing, IEEE Transactions on Antennas and Propagation, Vol. 67, No. 6, pp. 4313 - 4318, March, 2019,
| Abstract | BibTex
N. Leonor, M. Sanchez, T. Fernandes, R. F. S. Caldeirinha, A 2D Ray-Tracing Based Model for Wave Propagation Through Forests at Microand Millimeter Wave Frequencies, IEEE Access, Vol. 6, No. 1, pp. 32097 - 32108, May, 2018,
| Abstract | BibTex
N. Leonor, R. F. S. Caldeirinha, T. Fernandes, J. Richter, M. AL-Nuaimi, A discrete RET Model for Millimeter-Wave Propagation through Vegetation, IEEE Transactions on Antennas and Propagation, Vol. 66, No. 04, pp. 1985 - 1998, April, 2018,
| Abstract | BibTex
N. Leonor, R. F. S. Caldeirinha, M. Sanchez, T. Fernandes, A Two-Dimensional Ray-Tracing-Based Model for Propagation Through Vegetation: A practical assessment using ornamental plants at 60 GHz. [Wireless Corner], IEEE Antennas and Propagation Magazine, Vol. 59, No. 1, pp. 145 - 150, February, 2017,
| Abstract | BibTex
N. Leonor, R. F. S. Caldeirinha, M. Sanchez, T. Fernandes, Input parameter extraction method for point scatterer formulation in vegetation media at millimetre-wave frequencies, IET Microwaves, Antennas and Propagation, Vol. 11, No. 2, pp. 165 - 170, January, 2017,
| Abstract | BibTex
N. Leonor, R. F. S. Caldeirinha, T. Fernandes, N. G. Gaddam, 60 GHz channel characterisation and key performance evaluation of HD video transmission, IET Microwaves, Antennas and Propagation, Vol. 10, No. 12, pp. 1298 - 1303, September, 2016,
| Abstract | BibTex
N. Leonor, R. F. S. Caldeirinha, M. Sanchez, T. Fernandes, A Three-dimensional Directive Antenna Pattern Interpolation Method, IEEE Antennas and Wireless Propagation Letters, Vol. 15, No. 1, pp. 881 - 884, March, 2016,
| Abstract | BibTex
N. Leonor, D. Ferreira, R. F. S. Caldeirinha, T. Fernandes, M. Sanchez, Extension of the dRET model to forests of thin cylinders, IEEE Transactions on Antennas and Propagation, Vol. 63, No. 9, pp. 4049 - 4056, September, 2015,
| Abstract | BibTex
N. Leonor, R. F. S. Caldeirinha, T. Fernandes, M. Sanchez, A simple model for average re-radiation patterns of single trees based on weighted regression at 60 GHz, IEEE Transactions on Antennas and Propagation, Vol. 63, No. 11, pp. 5113 - 5118, August, 2015,
| Abstract | BibTex
D. Ferreira, R. F. S. Caldeirinha, N. Leonor, Real-time high-resolution radio frequency channel sounder based on the sliding correlation principle, IET Microwaves, Antennas and Propagation, Vol. 9, No. 8, pp. 837 - 846, January, 2015,
| Abstract | BibTex
N. Leonor, R. F. S. Caldeirinha, T. Fernandes, D. Ferreira, M. Sanchez, A 2D Ray-Tracing Based Model for Micro- and Millimeter-Wave Propagation Through Vegetation, IEEE Transactions on Antennas and Propagation, Vol. 62, No. 12, pp. 6443 - 6453, December, 2014,
| Abstract | BibTex

35Papers in Conferences

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 Conf. on Antennas & Propagation - EUCAP, Florence, Italy, Vol., pp. -, March, 2023,
| Abstract | BibTex
S. Heleno, C. A. Fernandes, J. M. Felício, C. Salema, R. F. S. Caldeirinha, N. Leonor, Development of TETRA Radio Backhaul Network Redundancy Plan for Disaster Recovery in Mission Critical Communications, European Conf. on Antennas & Propagation - EUCAP, Florence, Italy, 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 Conf. on Antennas & Propagation - EUCAP, Florence, Italy, Vol., pp. -, March, 2023,
| 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 Conf. on Antennas & 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, The European Conference on Antennas and Propagation - EuCAP, Madrid, Spain, March, 2022,
| Abstract | BibTex
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, International Federation for Information Processing IFIP International Internet of Things Conference IFIP IOT, Amsterdam, Netherlands, November, 2021,
| 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
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, The European Conference on Antennas and Propagation - EuCAP, Düsseldorf, Germany, March, 2021,
| Abstract | BibTex
L. Duarte, J. R. Reis, N. Leonor, C. Ribeiro, L. Alves, R. F. S. Caldeirinha, Reconfigurable millimetre-wave RF front-end for radar and 5G applications, Conference on Telecommunications - ConfTele, Leiria, Portugal, February, 2021,
| Abstract | BibTex
G. Ramos, N. Leonor, S. Faria, R. F. S. Caldeirinha, P. Castellanos, C. Ron, L. Mello, Parabolic Equation Technique Applied to an Urban Scenario in Rio de Janeiro, Conference on Telecommunications - 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
A. Sardo, J. R. Reis, L. Duarte, N. Leonor, C. Ribeiro, R. F. S. Caldeirinha, STDCC radar at 24 GHz: first measurement trials, URSI International Union of Radio Science General Assembly & Scientific Symposium URSI GASS, Rome, Italy, September, 2020,
| 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
G. Ramos, P. Pereira, N. Leonor, R. F. S. Caldeirinha, Analysis of Radiowave Propagation in Forest Media Using the Parabolic Equation, European Conf. on Antennas & Propagation - EUCAP, Copenhagen, Denmark, March, 2020,
| Abstract | BibTex
N. Leonor, T. Fernandes, R. F. S. Caldeirinha, A Practical Deconvolution Antenna Method to Retrieve Scattering Profile in Complex Random Media - A Vegetation Case Study at 28 GHz, European Conf. on Antennas & Propagation - EUCAP, Copenhagen, Denmark, March, 2020,
| Abstract | BibTex
S. Faria, N. Leonor, C. A. Fernandes, J. M. Felício, C. Salema, R. F. S. Caldeirinha, Radiowave Propagation Modelling in the Presence of Wildfires: Initial Results, European Conf. on Antennas & Propagation - EUCAP, Copenhagen, Denmark, March, 2020,
| Abstract | BibTex
N. Leonor, G. Ramos, R. F. S. Caldeirinha, Benchmark of radio propagation path loss models applied to line-of-trees at 10, 36 and 60 GHz, International Microwave and Optoelectronics Conf. - IMOC, Aveiro, Portugal, November, 2019,
| Abstract | BibTex
R. F. S. Caldeirinha, J. R. Reis, A. Sardo, L. Duarte, N. Leonor, J.M. Gil, C. Ribeiro, Disruptive Future of RADAR based on All-Digital PN Signal Processing, IEEE IEEE-APS Topical Conference on Antennas and Propagation in Wireless Communications APWC2019, Granada, Spain, Vol. -, pp. - - -, September, 2019,
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R. F. S. Caldeirinha, N. Leonor, A. Sardo, C. Ribeiro, G. Ramos, Radio Channel Sounder for 5G Propagation Modelling at 28 GHz - Initial Trials on the Factory of the Future Use Case, Conf. on Telecommunications - ConfTele, Lisbon, Portugal, Vol. -, pp. - - -, June, 2019,
| Abstract | BibTex
W. Conniott, J. R. Reis, N. Leonor, R. F. S. Caldeirinha, Shielding effectiveness of log barriers for radio exclusion zones, Loughborough Antennas and Propagation Conf. – LAPC, Loughborough, United Kingdom, November, 2018,
| Abstract | BibTex
N. Leonor, C. A. Fernandes, C. Salema, R. F. S. Caldeirinha, A Framework for the Analysis of Wildfire Effects in Emergency Communication Systems, IEEE Computing, Electromagnetics, and Machine Intelligence Workshop CEMi, Stellenbosch, South Africa, November, 2018,
| Abstract | BibTex
N. Leonor, R. F. S. Caldeirinha, T. Fernandes, M. Sanchez, Fractal-based 3D Model for Propagation in Vegetation at Millimeter-Wave Frequencies, European Conf. on Antennas & Propagation - EUCAP, London, United Kingdom, Vol. 1, pp. 1 - 5, April, 2018,
| Abstract | BibTex
N. Leonor, R. F. S. Caldeirinha, M. Sanchez, T. Fernandes, S. Morgadinho Rebelo, A Feasibility Study on the Extension of the Point Scatterer Formulation to Include Wind Induced Dynamics, Loughborough Antennas and Propagation Conf. – LAPC, Loughborough, United Kingdom, November, 2017,
| Abstract | BibTex
N. Leonor, R. F. S. Caldeirinha, M. Sanchez, T. Fernandes, A feasibility study on the extension of the point scatterer formulation to raised canopy forests, Loughborough Antennas and Propagation Conf. – LAPC, Loughborough, United Kingdom, Vol. N/A, pp. 1 - 4, November, 2016,
| Abstract | Full text (PDF 391 KBs) | BibTex
N. Leonor, R. F. S. Caldeirinha, T. Fernandes, M. Sanchez, A feasibility study on the extension of the point scatterer formulation to vegetation media, European Conf. on Antennas & Propagation - EUCAP, Lisbon, Portugal, Vol. 1, pp. 1 - 5, April, 2015,
| Abstract | BibTex
N. Leonor, D. Ferreira, R. F. S. Caldeirinha, T. Fernandes, Ray tracing based model using point scatterers for time-varying radio channels, Conf. on Telecommunications - ConfTele, Castelo Branco, Portugal, Vol. 1, pp. 1 - 4, May, 2013,
| Abstract | Full text (PDF 524 KBs) | BibTex
B. Feitor, R. F. S. Caldeirinha, T. Fernandes, D. Ferreira, N. Leonor, Estimation of Dielectric Concrete Properties from Power Measurements at 18.7 and 60 GHz, Loughborough Antennas and Propagation Conf. – LAPC, Loughborough, United Kingdom, Vol. 1, pp. 1 - 4, November, 2011,
| Abstract | BibTex
N. Leonor, R. F. S. Caldeirinha, T. Fernandes, D. Ferreira, A ray tracing based model using point scatterers for doubly selective radio channels, URSI Seminar of the Portuguese Committee, Lisbon, Portugal, Vol. 1, pp. 1 - 4, November, 2011,
| Abstract | Full text (PDF 601 KBs) | BibTex
N. Leonor, D. Ferreira, R. F. S. Caldeirinha, T. Fernandes, A simple scattering model for tree trunks, URSI General Assembly, Istanbul, Turkey, Vol. 1, pp. 1 - 4, August, 2011,
| Abstract | BibTex
N. Leonor, R. F. S. Caldeirinha, T. Fernandes, D. Ferreira, Modelling and Measurements of the Directional Spectra of Scatter Signals Inside a Formation of Tree Trunks, Conf. on Telecommunications - ConfTele, Lisbon, Portugal, Vol. 1, pp. 1 - 4, April, 2011,
| Abstract | BibTex
R. F. S. Caldeirinha, T. Fernandes, N. Leonor, D. Ferreira, Extension of the dRET Model to include Scattering from Tree Trunks in Microcell Urban Mobile Scenarios, Vehicular Technology Conference: VTC-Spring, Taipei, Taiwan, Vol. 1, pp. 1 - 1, May, 2010 | BibTex
T. Fernandes, N. Leonor, R. F. S. Caldeirinha, J. Richter, M. AL-Nuaimi, On the applicability of the dRET model to the trunk layer, European Conf. on Antennas & Propagation - EUCAP, Barcelona, Spain, Vol. 1, pp. 1 - 4, April, 2010,
| Abstract | BibTex

2Non-refereed Publications

R. F. S. Caldeirinha, A. Sardo, B. Tribovane, N. Leonor, CA15104 TD(19)09043 Agile Radio Channel Sounder for 5G Propagation Modelling at mmWave Frequencies, IRACON 9th Technical Meeting, Dublin, Jan., 2019, January 2019,
| Abstract | Full text (PDF 2 MBs)
N. Leonor, T. Fernandes, R. F. S. Caldeirinha, CA15104 TD(19)09027 Formulation of Possible Extensions to the ITU-R P833-9 Recommendation on Attenuation in Vegetation at Frequencies Above 1 GHz, January 2019,
| Abstract | Full text (PDF 1 MB)

Projects

Closed Projects5

Acronym	Name	Funding Agency	Start date	Ending date
BenchProM	Benchmarks for High-resolution Mobile Radiowave Propagation Models	IT/LA	01-10-2014	01-09-2016
Propagation5G	Study and optimisation of propagation models for 5G	FCT/CAPES	01-04-2019	31-05-2022
Ray-BaM	Ray trace based model for micro- and millimeter-wave propagation through vegetation	IT/LA	01-10-2014	01-10-2016
RESCuE-TOOL	Radio coverage for emergency communication systems to operate under critical wildfire environments TOOL	FCT	31-12-2018	27-02-2023
WSN_EM	Wireless Sensor Network for Environmental Monitoring	FCT	01-09-2018	31-08-2022

Other Scientific Achievements

5Awards

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
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
N. Leonor, R. F. S. Caldeirinha, M. Sanchez, T. Fernandes, A feasibility study on the extension of the point scatterer formulation to raised canopy forests, Best Non-Student Paper (1st place) award at 2016 Loughborough Antennas & Propagation, 01-11-2016
R. F. S. Caldeirinha, N. Leonor, Semi-finalist of the IEEE AP-S Student Design Contest 2011: Radiation Patterns on a Budget, This paper presents a radiation pattern measurement system in order to evaluate 2.4GHz antennas. This measurement system was built with the demand of being an inexpensive and easily reproducible system, lightweight and visually and user friendly. Prize of $1,500, 01-06-2011
R. F. S. Caldeirinha, B. Feitor, T. Fernandes, D. Ferreira, N. Leonor, Estimation of Dielectric Concrete Properties from Power Measurements at 18.7 and 60 GHz, Nominated for the IET best student paper competition at Loughborough Antennas and Propagation Conf. – LAPC, Loughborough, United Kingdom, November, 2011., 01-11-2010

2Prototypes

R. F. S. Caldeirinha, N. Leonor, D. Ferreira, T. Fernandes, A ray tracing based model using point scatterers for doubly selective radio channels
R. F. S. Caldeirinha, N. Leonor, Low cost and portable radiation pattern measurement system at 2.4 GHz

IT Member Profile

Nuno Leonor

19-12-2021

IT researchers distinguished with the Research Award and the Best Student Paper Award URSI 2021

Scientific Achievements

As Co-supervisor

As Co-supervisor

As Supervisor

As Co-supervisor

Closed Projects5