Results 181 to 190 of about 4,866 (225)
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Aperiodic conformal reflectarrays
2011 IEEE International Symposium on Antennas and Propagation (APSURSI), 2011We introduce a new class of reflectarrays, namely, the aperiodic conformal reflectarrays, aimed at exploiting, as much as possible, the available degrees of freedom of the radiating structure, such as positions, orientations and characteristics of the radiating elements and the shape of the reflecting surface.
CAPOZZOLI, AMEDEO +4 more
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Bandwidth study of microstrip reflectarray and a novel phased reflectarray concept
IEEE Antennas and Propagation Society International Symposium. 1995 Digest, 2002A microstrip reflectarray is a flat reflector antenna that can be conformally mounted onto its supporting structure without consuming a significant amount of real estate and without adding significant mass. The article concentrates on the bandwidth study of a form of reflectarray that uses identical patches with different-length transmission delay ...
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2006 IEEE Antennas and Propagation Society International Symposium, 2006
A simple sub-millimeter infrared reflectarray (SMIR) has been successfully fabricated and tested at 10.6 mum. The SMIR is comprised of three independent arrays or "stripes" of a single size element on a coated optical flat. Actual reflectarray elements consist of variable size patches which exhibit higher operating bandwidths than reflectarrays ...
J.C. Ginn, B.A. Lail, G.D. Boreman
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A simple sub-millimeter infrared reflectarray (SMIR) has been successfully fabricated and tested at 10.6 mum. The SMIR is comprised of three independent arrays or "stripes" of a single size element on a coated optical flat. Actual reflectarray elements consist of variable size patches which exhibit higher operating bandwidths than reflectarrays ...
J.C. Ginn, B.A. Lail, G.D. Boreman
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2005 18th International Conference on Applied Electromagnetics and Communications, 2005
A study about switched beam reflectarrays has been carried out as a task on the Spanish project ARCO, to know the possibilities of this kind of antenna. The study has demonstrated that is possible to have a control of the radiation pattern by using switches on the reflector surface, and were studied different configurations in order to simplify ...
H. Palacios, J.E. Page, J. Vassal'lo
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A study about switched beam reflectarrays has been carried out as a task on the Spanish project ARCO, to know the possibilities of this kind of antenna. The study has demonstrated that is possible to have a control of the radiation pattern by using switches on the reflector surface, and were studied different configurations in order to simplify ...
H. Palacios, J.E. Page, J. Vassal'lo
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Reflectarrays: Potentials and Challenges
2007 International Conference on Electromagnetics in Advanced Applications, 2007The paper gives an overview of research activities on reflectarrays. It revisits the original concept of reflectarray and describes how its realization evolved over the last three decades. Fixed-beam and electronically steered varieties of this antenna are considered.
Bialkowski, M.E., Encinar, J.
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Wideband conformal reflectarrays: Preliminary analysis
2014 International Conference on Electromagnetics in Advanced Applications (ICEAA), 2014In this paper, some preliminary results on conformal reflectarray antennas are presented. In particular, the effects introduced by the curvature on the phase of the re-radiated field variation vs. the reflectarray unit cell geometrical parameters have been considered.
Bui, V. H. +3 more
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2007
This article has covered the principles of operation and design guidelines of microstrip reflectarrays, which have been intensively researched over the last two decades at various parts of the world. The reflectarrays that have been described here are able to produce single- and multibeam operation with linear, dual-linear, or circular polarization ...
Bialkowski, M.E. +3 more
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This article has covered the principles of operation and design guidelines of microstrip reflectarrays, which have been intensively researched over the last two decades at various parts of the world. The reflectarrays that have been described here are able to produce single- and multibeam operation with linear, dual-linear, or circular polarization ...
Bialkowski, M.E. +3 more
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Editor's comments [reflectarray]
IEEE Antennas and Propagation Magazine, 2013The reflectarray is a familiar antenna structure. It often allows replacing a thick, expensive reflector with a thin, flat, relatively low-cost device. A phase-shifting surface is a structure that is analogous to a reflectarray but utilizing transmission, replacing a lens antenna with a thin, flat, low-cost multilayer printed structure.
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2018
Discussion of the leaky wave mechanism in Chap. 8 leads to a natural embracing of novel array antennas incorporating passive reflectarrays and Fabry-Perot resonator arrays—all of which have their origins in periodic surfaces and the emerging topics of frequency selective surfaces (FSS), partially reflective surfaces (PRS), high impedance surfaces (HIS)
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Discussion of the leaky wave mechanism in Chap. 8 leads to a natural embracing of novel array antennas incorporating passive reflectarrays and Fabry-Perot resonator arrays—all of which have their origins in periodic surfaces and the emerging topics of frequency selective surfaces (FSS), partially reflective surfaces (PRS), high impedance surfaces (HIS)
openaire +1 more source