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Robust Precoding with Bayesian Error Modeling for Limited Feedback MU-MISO Systems 

Joham, Michael; Castro-Castro, Paula-María; Castedo, Luis; Wolfgang, Utschick (IEEE, 2010)
[Abstract] We consider the robust precoder design for multiuser multiple-input single-output (MU-MISO) systems where the channel state information (CSI) is fed back from the single antenna receivers to the centralized ...
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Variation in The Bandwidths of Pattern-Quality Parameters and Maximum Embedded Impedance among the Solutions to Shaped-Beam Synthesis Problems for Collinear Dipole Arrays 

Brégains, Julio; Ares Pena, F. J.; Moreno Piquero, E. (Institute of Electrical and Electronics Engineers, 2003)
[Abstract] We investigated variation in the bandwidths of ripple, sidelobe level, -3 dB beamwidth, and maximum element embedded (active) impedance (|Z/sup e/|/sub max/) among multiple collinear dipole arrays radiating a ...
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Very Fast Method to Synthesise Conformal Arrays 

Fondevila, J.; Rodríguez, J. A.; Brégains, Julio; Moreno Piquero, E.; Ares Pena, F. J. (The Institution of Engineering and Technology, 2007-08-02)
[Abstract] A very fast technique that allows the synthesising of arbitrary footprint patterns by using conformal arrays with many radiating elements is described. This method is based on a combination of Woodward-Lawson ...
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Time Modulated Arrays: from their Origin to Their Utilization in Wireless Communication Systems 

Maneiro-Catoira, Roberto; Brégains, Julio; García-Naya, José A.; Castedo, Luis (M D P I AG, 2017-03-14)
[Abstract] Time-modulated arrays (TMAs) are electromagnetic systems whose radiated power pattern is controlled by the application of variable-width periodical pulses to the individual elements. The nonlinear nature of the ...
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Optimizing Uniformly Excited Linear Arrays through Time Modulation 

Fondevila, J.; Brégains, Julio; Ares Pena, F. J.; Moreno Piquero, E. (Institute of Electrical and Electronics Engineers, 2004-12)
[Abstract] The letter shows that, by the proper use of time modulation in equispaced linear arrays with uniform excitation distribution, it is possible to maintain the sidelobe zone of the radiated power below a certain - ...
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Perturbation of the Phases of Taylor Field Samples in the Synthesis of Linear and Circular Array Antennas 

Brégains, Julio; Ares Pena, F. J.; Roederer, A. G. (Institute of Electrical and Electronics Engineers, 2004-12)
[Abstract] Antenna design specifications do not usually restrict the phase of the radiated field. Antenna synthesis techniques generally exploit this freedom only indirectly, but direct phase perturbation can be fruitful.
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A MATLAB Interface for Analyzing Conformal Arrays Composed of Polarized Heterogeneous Elements 

Brégains, Julio; García-Naya, José A.; González-López, Miguel; Castedo, Luis (Institute of Electrical and Electronics Engineers, 2011-10)
[Abstract] As an extension and improvement of a previous work, this paper presents a graphical interface designed with MATLAB®, which is capable of representing both the spatial and electrical configurations of a conformal ...
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A MATLAB Tool for Visualizing the 3D Polar Power Patterns and Excitations of Conformal Arrays 

Brégains, Julio; García-Naya, José A.; González-López, Miguel; Dapena, Adriana (Institute of Electrical and Electronics Engineers, 2010-08)
[Abstract] This paper describes the implementation of a MATLAB® tool to plot the three-dimensional polar radiation diagram generated by a conformal antenna array. A related tool has also been developed for visualizing the ...
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Avoiding Interference in Planar Arrays through the Use of Artificial Neural Networks 

Brégains, Julio; Dorado, Julián; Gestal, M.; Rodríguez, J. A.; Ares, F.; Pazos, A. (Institute of Electrical and Electronics Engineers, 2002-08)
[Abstract] This article implements an artificial neural network to find, through computer simulation, the excitations of a square planar array. The array is composed of 52 uniformly spaced subarrays, and has a quasi- in ...
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Analysis, Synthesis, and Diagnostics of Antenna Arrays through Complex-Valued Neural Networks 

Brégains, Julio; Ares Pena, F. J. (John Wiley & Sons, Inc., 2006-08)
[Abstract] It is shown in this paper that when artificial neural networks are extended to be complex valued, they can be incorporated as a very powerful and effective tool in the analysis, synthesis, and diagnostics of ...
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AuthorBrégains, Julio (10)Castedo, Luis (6)Ares Pena, F. J. (5)García-Naya, José A. (4)Moreno Piquero, E. (3)Fondevila, J. (2)González-Coma, José P. (2)González-López, Miguel (2)Maneiro-Catoira, Roberto (2)Rodríguez, J. A. (2)... View MoreSubject
Antenna arrays (13)
Antenna radiation patterns (5)Conformal antennas (3)Precoding (3)Bandwidth (2)Digital communications (2)Frequency (2)Linear antenna arrays (2)Massive MIMO (2)Adaptive arrays (1)... View MoreDate Issued2020 - 2021 (2)2010 - 2019 (5)2002 - 2009 (6)
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