@article {15_TAP_Rubio_ThinningOMP,
title = {Array Thinning of Coupled Antennas Based on the Orthogonal Matching Pursuit Method and a Spherical-Wave Expansion for Far-Field Synthesis},
journal = {Antennas and Propagation, IEEE Transactions on},
volume = {63},
number = {12},
year = {2015},
month = {Dec},
pages = {5425-5432},
abstract = {This work is focused on the array thinning problem in shaped beam far-field synthesis. The orthogonal matching pursuit algorithm, which allows finding sparse solutions in linear systems, is combined with a fast full-wave analysis method for antenna arrays based on a spherical wave expansion, thereby taking mutual coupling between real antennas into account in the thinning process. To this aim, the original iterative algorithm is modified so that the current residual is obtained for the selected real coupled antennas in each step of the algorithm. In this way, the remaining nonselected elements are effectively removed instead of turned off. Results for arrays made up of microstrip patch antennas and dielectric resonator antennas arranged in triangular and rectangular lattices are presented.},
keywords = {Antenna arrays, array thinning problem, Arrays, coupled antennas, dielectric resonator antennas, far-field synthesis, fast full-wave analysis method, generalized scattering matrix, iterative algorithm, iterative methods, Layout, linear systems, Matching pursuit algorithms, microstrip antenna arrays, microstrip patch antennas, Mutual coupling, orthogonal matching pursuit method, pattern field synthesis, planar array, rectangular lattices, spherical wave expansion, spherical-wave expansion, translational addition theorems, Transmission line matrix methods, triangular lattices},
issn = {0018-926X},
doi = {10.1109/TAP.2015.2487506},
author = {J Rubio and J C{\'o}rcoles and J F Izquierdo and R G{\'o}mez-Alcal{\'a}}
}
@article {15_TAP_RubioIzqdoCorcoles_ModalNetworkMIMO,
title = {Mutual Coupling Compensation Matrices for Transmitting and Receiving Arrays},
journal = {IEEE Transactions on Antennas and Propagation},
volume = {63},
number = {2},
year = {2015},
month = {Feb},
pages = {839-843},
abstract = {A general method to obtain a matrix which allows the compensation of mutual coupling effects in transmitting arrays for the total field in all directions is introduced. This method is independent of the numerical method used in the analysis and it can include the effect of the antenna platform. The starting point can be the active element patterns or the spherical mode expansion from spherical near-field antenna measurements. Additionally, the spherical mode expansion is also used to find a matrix which allows the compensation of mutual coupling effects in receiving arrays. Through this theory, a simple relation between the compensation matrices of the transmitting and the receiving arrays is found. As a consequence, the scattering matrix of a circuit that allows the simultaneous compensation of mutual coupling effects for the transmission and the reception problem can be easily defined. Finally, it will be shown how the capabilities of the compensation in all directions depend strongly on the array element.},
keywords = {Active element pattern, antenna array, Antenna arrays, Antenna measurements, antenna radiation patterns, finite element analysis, Mutual coupling, mutual coupling compensation, spherical mode expansion, transmitting antennas, Vectors},
issn = {0018-926X},
doi = {10.1109/TAP.2014.2382691},
url = {http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=\&arnumber=6987253},
author = {Rubio, J and Izquierdo, J F and J C{\'o}rcoles}
}
@article {13_AWPL_GARCIA-VALVERDE_PFC,
title = {Linear Patch Array Over Substrate Integrated Waveguide for Ku-Band},
journal = {IEEE Antennas and Wireless Propagation Letters},
volume = {12},
year = {2013},
pages = {257-260},
abstract = {A linearly polarized patch array with direct probe feed over substrate integrated waveguide (SIW) network (LP-PASIW) for Ku-band is presented. A double-stacked microstrip patch structure has been used as radiating elements. Internal SIW coupling patches are placed inside the SIW to obtain the desired radiation pattern. The internal coupling and external radiating patches are connected by means of copper vias. A mutual coupling model is also proposed to adjust the radiation and reflection properties of the array. An antenna prototype has been manufactured and measured. At 17.7 GHz, 16 dBi and 80\% peak gain and efficiency values are obtained. Although a 10\% reflection bandwidth (17-18.6 GHz) is achieved, the usable bandwidth is reduced to 3\% due to array beam tilt dispersion.},
keywords = {antenna feeds, antenna prototype, antenna radiation patterns, Antennas, array beam tilt dispersion, Arrays, bandwidth 17 GHz to 18.6 GHz, Brain modeling, Couplings, direct probe feed, double-stacked microstrip patch structure, Double-stacked patch, efficiency 80 percent, electromagnetic wave polarisation, external radiating patches, frequency 17.7 GHz, hybrid LSM$^{{rm y}{\textquoteright}}$ mode, internal coupling patches, internal SIW coupling patches, linearly polarized patch array, LP-PASIW, microstrip antenna arrays, microwave antenna arrays, Mutual coupling, mutual coupling model, radiating elements, radiation pattern, Reflection, substrate integrated waveguide (SIW), substrate integrated waveguide network, substrate integrated waveguides, Substrates, waveguide antenna arrays},
issn = {1536-1225},
doi = {10.1109/LAWP.2013.2245623},
url = {http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=\&arnumber=6451111\&tag=1},
author = {D Garcia-Valverde and J L Masa-Campos and P Sanchez-Olivares and B Taha-Ahmed and J C{\'o}rcoles}
}
@article {11_TAP_CorcolesRubio_SphericalSynthesis,
title = {Spherical-Wave-Based Shaped-Beam Field Synthesis for Planar Arrays Including the Mutual Coupling Effects},
journal = {IEEE Transactions on Antennas and Propagation},
volume = {59},
number = {8},
year = {2011},
month = {Aug},
pages = {2872-2881},
abstract = {An analytical method to synthesize shaped-beam patterns with planar arrays, based on the handling of spherical waves, is proposed. Translational Addition Theorems will be used here for two different purposes: (1) relating the spherical modes produced by each element in the array to calculate the mutual coupling effects, and (2) expressing the field radiated by each element in terms of spherical modes corresponding to the whole array, to carry out a spherical-wave synthesis procedure based on the orthogonal properties of spherical modes. This field synthesis method is based on the fact that any antenna radiated field can be expressed as a discrete series of weighted spherical vector wave functions and it only requires the a priori knowledge of the Generalized Scattering Matrix of each array element considered as isolated from the rest of the array elements.},
keywords = {antenna feeds, antenna radiated field, antenna radiation patterns, Arrays, electromagnetic coupling, electromagnetic wave scattering, field synthesis method, generalized scattering matrix, GSM, Mutual coupling, mutual coupling effect, pattern field synthesis, planar antenna arrays, planar array, planar array element, Planar arrays, S-matrix theory, Scattering, spherical wave expansion, spherical-wave synthesis procedure, spherical-wave-based shaped-beam field synthesis, translational addition theorem, translational addition theorems, weighted spherical vector wave function},
issn = {0018-926X},
doi = {10.1109/TAP.2011.2158950},
url = {http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=\&arnumber=5871276},
author = {J C{\'o}rcoles and Rubio, J and Gonz{\'a}lez, M A}
}
@article {09_AWPL_RubioCorcoles_InclusionFeedingNetwork,
title = {Inclusion of the Feeding Network Effects in the Generalized-Scattering-Matrix Formulation of a Finite Array},
journal = {IEEE Antennas and Wireless Propagation Letters},
volume = {8},
year = {2009},
pages = {819-822},
abstract = {The formulation of the generalized scattering matrix (GSM) of a finite array is revised to take into account the feeding network effects in the calculation of the external mutual coupling. It allows the analysis of finite arrays of externally coupled elements whose radiated field can be described by means of spherical waves on a ground plane, such as apertures, monopoles, cavity-backed patch antennas, or dielectric resonator antennas (DRAs), including rigorously the mismatching and internal coupling effects because of the feeding network.},
keywords = {antenna feeds, antenna radiation pattern, antenna radiation patterns, aperture antenna, cavity-backed patch antenna, dielectric resonator antenna, dielectric resonator antennas, DRA, electromagnetic coupling, entire-domain basis function, Entire-domain basis functions, external mutual coupling, feeding network effect, finite array, generalized scattering matrix (GSM), generalized scattering matrix formulation, GSM, internal coupling effect, mismatching effect, monopole antenna, multiport networks, Mutual coupling, S-matrix theory, spherical wave, spherical wave expansion, waveguide antenna arrays, waveguide-fed array},
issn = {1536-1225},
doi = {10.1109/LAWP.2009.2026715},
url = {http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=\&arnumber=5159466},
author = {Rubio, J and J C{\'o}rcoles and Gonzalez de Aza, M A}
}