- document
-
BuendDia, V.G. (author), Podilchak, S.K. (author), Liberto, S. (author), Walkinshaw, T. (author), Constantinides, C. (author), Anagnostou, D.E. (author), Goussetis, G. (author), Vorst, M.V.D. (author)A miniaturized planar Yagi-Uda antenna for integration with PicoSats or other SmallSat missions is proposed. Miniaturization techniques, such as meandering and 1-D artificial dielectric concepts to reduce the guided wavelength, are employed to overcome space constraints imposed by the SmallSat footprint while still maintaining good performance...article 2022
- document
-
Atanasov, A.N. (author), Alink, M.S.O. (author), Van Vliet, F.E. (author)We present a simple and useful figure of merit (FoM) with which to evaluate the performance of simultaneous-multi-beam (SMB) transmit (TX) antenna arrays. The FoM builds upon the power-aperture product and effective isotropic radiated power for single-beam arrays and extends it to SMB arrays. The FoM is the product of radiated power, antenna...conference paper 2022
- document
-
Marinovic, T. (author), de Villiers, D.I.L. (author), Bekers, D.J. (author), Johansson, M.N. (author), Stjernman, A. (author), Maaskant, R. (author), Vandenbosch, G.A.E. (author)A new method is proposed to analyze antenna arrays including mutual coupling (MC), which is based on the concept of multiple scattering, and relates to the iterative Jacobi and Gauss–Seidel methods. The method employs sampled far-field data of an isolated element, which can be obtained by any full-wave simulator and consists of far fields for...conference paper 2021
- document
-
Alrushud, K.M. (author), Gomez-Guillamon Buendia, V.A. (author), Podilchak, S.K. (author)A planar quasi-endfire surface-wave antenna (SWA) using substrate integrated waveguide (SIW) technology for integration with CubeSats and other small satellites is proposed in this letter. This antenna can be attached to the body of the satellite, resulting in a compact and low-cost design. A quasi-endfire beam pattern is achieved by the...article 2021
- document
-
Yepes, C. (author), Gandini, E. (author), Monni, S. (author), Neto, A. (author), van Vliet, F.E. (author), Cavallo, D. (author)In this letter, we present a design of a linear array of tilted dipoles to achieve radiation patterns with asymmetric angular filtering characteristics. To realize the asymmetric radiation, the dipole elements are spaced by a distance larger than half a wavelength, thus allowing for grating lobes to occur in the visible region. Moreover, the...article 2020
- document
-
Huang, J. (author), Cao, Z. (author), Zhao, X. (author), Zhang, X. (author), Liu, Y. (author), Xiang, Y. (author), Gerini, G. (author), Koonen, A.M.J. (author)In this article, a novel electrically controlled optical broadband phase shifter (ECO-BPS) is proposed and experimentally investigated for broadband microwave orbital angular momentum (OAM) mode generation. Based on the proposed ECO-BPS and a 17-element circular antenna array, the effect of the phase error on the OAM mode quality is studied by...article 2020
- document
-
Yepes, C. (author), Neto, A. (author), Cavallo, D. (author), Gandini, E. (author), van Vliet, F.E. (author), Monni, S. (author)We present the design of an array of tilted dipoles loaded with artificial dielectrics, to achieve asymmetric radiation patterns. First, a simplified array element consisting of skewed stacked dipoles in the presence of a backing reflector is studied, by means of a dedicated spectral periodic method of moments (MoM). The analysis of the stacked...conference paper 2019
- document
-
Pairon, T. (author), Karki, S. (author), Monni, S. (author), Craeye, C. (author)A fully metallic monopole element is proposed for satellite SAR antennas. This element has significant gain in the broadside direction thanks to its curved arm. This element is then studied in a large sparse array. A fast analysis technique is presented in order to solve for the currents of few hundreds elements, which correspond approximately...conference paper 2019
- document
-
Yepes, C. (author), Gandini, E. (author), Monni, S. (author), van Vliet, F.E. (author), Neto, A. (author), Cavallo, D. (author)In this work, we present a study on the radiation and impedance properties of antenna arrays with tilted elements. We developed a spectral method of moments (MoM) for the analysis of doubly-periodic arrays with arbitrarily tilted dipole or stacked dipole elements, in free space or in the presence of a backing reflector. By using this analysis...conference paper 2019
- document
- Garufo, A. (author), Sberna, P.M. (author), Carluccio, G. (author), Freeman, J.R. (author), Bacon, D.R. (author), Li, L. (author), Bueno, J. (author), Baselmans, J.J.A. (author), Linfield, E.H. (author), Davies, A.G. (author), Llombart, N. (author), Neto, A. (author) article 2019
- document
-
Yepes, C. (author), Van Schelven, R. (author), Cavallo, D. (author), Gandini, E. (author), Neto, A. (author)In this work we present a study to determine the parameters affecting the power radiated in specific directions by antenna arrays with tilted elements. We developed an efficient Method of Moments for the analysis of linear arrays with arbitrarily tilted dipole elements, in free space or in the presence of a backing reflector. By using this...conference paper 2018
- document
-
Silvestri, F. (author), Benini, A. (author), Gandini, E. (author), Gerini, G. (author), Martini, E. (author), Maci, S. (author), Vigano, M.C. (author), Geurts, M. (author), Toso, G. (author), Monni, S. (author)This paper presents design considerations for the development of wide-scanning antennas for on-craft satellite communications. A scanning coverage of 80° is required for this application over a 15% fractional bandwidth in Ka-band. A solution based on a phased array illuminating a passive superstrate is identified as the most promising. A fully...conference paper 2017
- document
- Yepes, C. (author), Cavallo, D. (author), Neto, A. (author), Gandini, E. (author), Monni, S. (author), van Vliet, F.E. (author) conference paper 2017
- document
-
Keizer, W.P.M.N. (author)The impact of the array factor (AF) on the synthesis of a low-sidelobe taper for planar array antennas with a periodic element grid is investigated. A low-sidelobe taper that is synthesized for those far-field directions of the AF belonging to only visible direction, cosine u - v space, can seriously deteriorate with respect to peak sidelobe...article 2016
- document
-
Bolt, R.J. (author), Cavallo, D. (author), Gerini, G. (author), Deurloo, D. (author), Grooters, R. (author), Neto, A. (author), Toso, G. (author)In this paper, we present the characterization of a Ku-band connected-dipole array for mobile Satcom application. The prototype array consists of 2 × 256 dipole radiators arranged in a square grid, to form 16 × 16 dual-polarized cells. It has been designed to operate over a wideband ranging from 10.7 to 14.5 GHz (30%), accommodating in a single...article 2016
- document
-
Anitori, L. (author), van Rossum, W.L. (author), Huizing, A.G. (author)In this paper we present some preliminary results on antenna array extrapolation for Direction Of Arrival (DOA) estimation using Sparse Reconstruction (SR). The objective of this study is to establish wether it is possible to achieve with an array of a given physical length the performance (in terms of accuracy, resolution and sidelobe level) of...conference paper 2015
- document
-
Jacobs, S. (author), Bekers, D. (author), Monni, S. (author), Otten, M. (author), Van Rossum, W. (author), Gerini, G. (author), Germani, C. (author), Fortini, D. (author), Toso, G. (author)This contribution addresses the problem of designing a sparse active array antenna for spaceborne SAR applications at Ka-band. The main driver for the design is limiting the recurring manufacturing costs associated to the number of active modules, while preserving main performance and insuring a certain level of industrial feasibility. A sparse...conference paper 2015
- document
-
Pang, C. (author), Hoogeboom, P. (author), Russchenberg, H. (author), Wang, T. (author), Dong, J. (author), Wang, X. (author)In this paper, the polarization error correction of dual-polarized planar scanned array weather radar in alternately transmitting and simultaneously receiving (ATSR) mode is analyzed. A method based on point correction and a method taking the complete array patterns into account are discussed. To analyze their performances, a linear error model...conference paper 2014
- document
-
Pang, C. (author), Hoogeboom, P. (author), Russchenberg, H. (author), Wang, T. (author), Dong, J. (author), Wang, X. (author)In this paper, the polarization error correction of dual-polarized planar scanned array weather radar in alternately transmitting and simultaneously receiving (ATSR) mode is analyzed. A method based on point correction and a method taking the complete array patterns into account are discussed. To analyze their performances, a linear error model...conference paper 2014
- document
-
Cavallo, D. (author), Gerini, G. (author), Bolt, R. (author), Grooters, R. (author), Deurloo, D. (author), van Zalk, B. (author), Neto, A. (author), Toso, G. (author), Midthassel, R. (author)This work reports on the development and performance of a doubly-polarized array of connected dipoles for in-flight entertainment. The array is designed to simultaneously operate in the uplink and the downlink bands, with an overall bandwidth of about 30%, from 10.7 to 14.5 GHz. The array prototype comprises 16×16 elements in each polarization...conference paper 2012