Nelson J. G. Fonseca
Nelson J. G. Fonseca
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Circular polarization wide-angle beam steering at Ka-Band by in-plane translation of a plate lens antenna
EB Lima, SA Matos, JR Costa, CA Fernandes, NJG Fonseca
IEEE Transactions on Antennas and Propagation 63 (12), 5443-5455, 2015
962015
Design and implementation of two-layer compact wideband Butler matrices in SIW technology for Ku-band applications
AAM Ali, NJG Fonseca, F Coccetti, H Aubert
IEEE Transactions on Antennas and Propagation 59 (2), 503-512, 2011
822011
Printed S-band 4× 4 Nolen matrix for multiple beam antenna applications
NJG Fonseca
IEEE transactions on antennas and propagation 57 (6), 1673-1678, 2009
782009
Planar -Band 44 Nolen Matrix in SIW Technology
T Djerafi, NJG Fonseca, K Wu
IEEE transactions on microwave theory and techniques 58 (2), 259-266, 2010
742010
High Gain Dual-Band Beam-Steering Transmit Array for Satcom Terminals at Ka-Band
SA Matos, EB Lima, JS Silva, JR Costa, CA Fernandes, NJG Fonseca, ...
IEEE Transactions on Antennas and Propagation 65 (7), 3528-3539, 2017
592017
Broadband Substrate Integrated Waveguide 44 Nolen Matrix Based on Coupler Delay Compensation
T Djerafi, NJG Fonseca, K Wu
IEEE transactions on microwave theory and techniques 59 (7), 1740-1745, 2011
562011
Dual-Band Dual-Linear-to-Circular Polarization Converter in Transmission Mode Application to-Band Satellite Communications
P Naseri, SA Matos, JR Costa, CA Fernandes, NJG Fonseca
IEEE Transactions on Antennas and Propagation 66 (12), 7128-7137, 2018
462018
Compact Multibeam Fully Metallic Geodesic Luneburg Lens Antenna Based on Non-Euclidean Transformation Optics
Q Liao, NJG Fonseca, O Quevedo-Teruel
IEEE Transactions on Antennas and Propagation 66 (12), 7383-7388, 2018
432018
Design and implementation of a planar 4x4 Butler matrix in SIW technology for wide band high power applications
T Djerafi, NJG Fonseca, K Wu
Progress In Electromagnetics Research B 35, 29-51, 2011
432011
On the design of a compact neural network-based DOA estimation system
NJG Fonseca, M Coudyser, JJ Laurin, JJ Brault
IEEE Transactions on Antennas and Propagation 58 (2), 357-366, 2010
402010
High-Performance Electrically Thin Dual-Band Polarizing Reflective Surface for Broadband Satellite Applications
NJG Fonseca, C Mangenot
IEEE Transactions on Antennas and Propagation 64 (2), 640-649, 2016
382016
Multi-beam reflector antenna system combining beam hopping and size reduction of effectively used spots
NJG Fonseca, J Sombrin
IEEE Antennas and Propagation Magazine 54 (2), 88-99, 2012
332012
C-Band Multiple Beam Antennas for Communication Satellites
JM Montero, AM Ocampo, NJG Fonseca
IEEE Transactions on Antennas and Propagation 63 (4), 1263-1275, 2015
322015
Wideband two-layer SIW coupler: design and experiment
A Ali, H Aubert, N Fonseca, F Coccetti
Electronics letters 45 (13), 687-689, 2009
322009
Height reduction of the axial-mode open-ended quadrifilar helical antenna
A Takacs, NJG Fonseca, H Aubert
IEEE Antennas and Wireless Propagation Letters 9, 942-945, 2010
312010
Compact printed quadrifilar helical antenna with iso-flux-shaped pattern and high cross-polarization discrimination
S Hebib, NJG Fonseca, H Aubert
IEEE Antennas and Wireless Propagation Letters 10, 635-638, 2011
302011
Multibeam antennas for very high throughput satellites in Europe: Technologies and trends
B Palacin, NJG Fonseca, M Romier, R Contreres, JC Angevain, G Toso, ...
2017 11th European Conference on Antennas and Propagation (EUCAP), 2413-2417, 2017
292017
Low-Profile Compact Dual-Band Unit Cell for Polarizing Surfaces Operating in Orthogonal Polarizations
W Tang, S Mercader-Pellicer, G Goussetis, H Legay, NJG Fonseca
IEEE Transactions on Antennas and Propagation 65 (3), 1472-1477, 2017
292017
Investigations on the efficiency of array fed coherently radiating periodic structure beam forming networks
N Ferrando, NJG Fonseca
IEEE Transactions on Antennas and Propagation 59 (2), 493-502, 2011
292011
A focal curve design method for Rotman lenses with wider angular scanning range
N Fonseca
Antennas and Wireless Propagation Letters 16, 54-57, 2017
282017
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