@conference {17_NEMO_EDU_JUAN_CAD2_ANTENNA, title = {Slotted Waveguide Antenna Design by Segmented Simulation and Multi-Objective Genetic Algorithm}, booktitle = {IEEE MTT-S International Conference on Numerical Electromagnetic and Multiphysics Modeling and Optimization for RF, Microwave and Terahertz Applications (NEMO)}, year = {2017}, month = {May}, abstract = {A progressive-wave antenna automated design technique is presented in this work. By means of a simulation method based on spherical wave expansion and generalized scattering matrix, full-wave analysis of a slotted waveguide array can be efficiently performed. Since coupling effects are considered in the simulation, a final antenna design can be obtained without any further modification required on it. In order to achieve such design, a multi-objective optimization based on Nondominated Sorting Genetic Algorithm Version III (NSGA-III) state-of-theart genetic algorithm is carried out. At the working frequency of 17 GHz, final design provides a 16.6 dBi gain, Side-Lobe Levels lower than -18.3 dB and a 0.6\% power waste at the output port. A -15-dB matching bandwidth of an 8.8\% is obtained. The results have been validated with commercial-software simulations.}, author = {E Garcia-Marin and J C{\'o}rcoles and J Rubio and J L Masa-Campos and P Sanchez-Olivares} } @article {16_AWPL_JUAN-CORCOLES_CAD_SLOTTED_ANTENNA, title = {Computer Automated Design of an Irregular Slotted Waveguide Array for Ku-Band}, journal = {IEEE Antennas and Wireless Propagation Letters}, volume = {15}, year = {2016}, pages = {1593-1597}, abstract = {A computer automated design methodology to synthesize a progressive wave array antenna is presented. The proposed method is based on the generalized-scattering matrix and spherical wave expansion analysis of the array. Mutual coupling effects between radiating elements are inherently considered in the design process. A linearly polarized 24-element irregular slotted array antenna at Ku-band is presented to describe the proposed computer automated design methodology. A prototype has been manufactured to experimentally validate the antenna performance. At the design frequency (17 GHz), 15.9 dB realized gain and 97\% efficiency (excluding aluminum losses) values are achieved. Although the array is designed at a single frequency, it shows an overall experimental 7\% usable bandwidth.}, keywords = {Array antenna, computer automated design, generalized scattering matrix, slot, spherical wave expansion}, issn = {1536-1225}, doi = {10.1109/LAWP.2016.2517928}, url = {http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=\&arnumber=7381600}, author = {J C{\'o}rcoles and P Sanchez-Olivares and J Rubio and J L Masa-Campos and J. Zapata} } @conference {16_URSI_JESUS-RUBIO_dao_slotted_array, title = {Dise{\~n}o Automatizado por Ordenador de una Agrupaci{\'o}n de Ranuras con Alimentaci{\'o}n en Gu{\'\i}a de Onda}, booktitle = {Simposium Nacional URSI 2016}, year = {2016}, month = {September}, abstract = {A Computer Automated Design method based on the generalized-scattering matrix and spherical wave expansion analysis is used to configure a linearly polarized 24-element slotted array antenna at Ku band. The mutual coupling effects between slots have been considered in the proposed methodology. Therefore, it is possible to remove the typical compensation step in the design process. The computing costs of the whole antenna optimization process is significantly reduced using the proposed method compared to the commercial full-wave simulation tools. An antenna prototype has been manufactured in order to experimentally validate the antenna performance. A realized gain and efficiency values of 15.9 dB and 97\% have been measured at the design frequency (17 GHz), respectively.}, author = {J C{\'o}rcoles and P Sanchez-Olivares and J Rubio and J L Masa-Campos and J. Zapata} } @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}} } @conference {15_EUCAP_Rubio_mutualcoupling, title = {On the simultaneous mutual-coupling compensation for all the space directions}, booktitle = {Antennas and Propagation (EUCAP), 2015 9th European Conference on}, year = {2015}, month = {April}, pages = {1-4}, author = {J Rubio and J F Izquierdo and J C{\'o}rcoles} } @conference {15_EIEC_Rubio_OMP, title = {Thinned Arrays by using the orthogonal matching pursuit algorithm and spherical-wave field synthesis}, booktitle = {X Iberian Meeting on Computational Electromagnetism}, year = {2015}, month = {May}, author = {J Rubio and J C{\'o}rcoles and J F Izquierdo and R G{\'o}mez-Alcal{\'a} and J. Zapata} }