Results 171 to 180 of about 302,217 (218)
A Transportable Reflectarray Antenna for Satellite Ku-band Emergency Communications [PDF]
IEEE Transactions on Antennas and Propagation, 2015 The design of a Ku-band reconfigurable reflectarray antenna for emergency satellite communications is presented. Bidirectional high data rate satellite links are needed in emergency conditions where other telecommunication infrastructures are not ...
Giovanni Toso +2 more
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Patents on Reconfigurable Reflectarray Antennas
Recent Patents on Electrical Engineeringe, 2009Reflectarray antennas have attracted significant attention due to a number of attractive properties, such as low cost, and conformal deployment capability. In addition, the drive towards flexible radio transceivers, enabling beamforming and multi-beam operation has spurred significant interest towards the design of antenna elements and antenna arrays ...
Georgiadis, Apostolos +2 more
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Reflectarray Antenna at Terahertz Using Graphene
IEEE Antennas and Wireless Propagation Letters, 2013The use of graphene for fixed-beam reflectarray antennas at Terahertz (THz) is proposed. Graphene's unique electronic band structure leads to a complex surface conductivity at THz frequencies, which allows the propagation of very slow plasmonic modes. This leads to a drastic reduction of the electrical size of the array unit cell and thereby good array
Carrasco-Yepez Francisco-Eduardo +1 more
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2017 International Conference on Electromagnetics in Advanced Applications (ICEAA), 2017
The process of reflectarray antenna design can be usually carried out into two separate steps: element design and aperture phase distribution design. In the step of element design, reflectarray elements need to be devised based on the requirements of phase range, element bandwidth, polarization and so on.
Shi-Wei Qu, Geng-Bo Wu
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The process of reflectarray antenna design can be usually carried out into two separate steps: element design and aperture phase distribution design. In the step of element design, reflectarray elements need to be devised based on the requirements of phase range, element bandwidth, polarization and so on.
Shi-Wei Qu, Geng-Bo Wu
openaire +1 more source
Broadband Optimization of Reflectarray Antennas
2019 International Conference on Microwave and Millimeter Wave Technology (ICMMT), 2019This paper presents the broadband design method for reflectarray (RA) antennas. The differential evolution (DE) algorithm has been applied to balance the spatial phase delay errors in the whole work band. A RA antenna consisted of split ring elements has been proposed to validate the method.
Yu Jianfeng, Cao Jun, Zhang Xiaogang
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Reflectarrays antennas for SAR missions
11th International Symposium on Antenna Technology and Applied Electromagnetics [ANTEM 2005], 2005Three distinct applications have been described which show the interest of reflectarray antennas for SAR missions in X band.
Herve Legay +5 more
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Circular polarized reflectarray antenna
20th Iranian Conference on Electrical Engineering (ICEE2012), 2012In this paper, aperture coupled dielectric resonator antenna loaded with rotated strip, is used as a CP element for reflectarray antenna. Phase variations are obtained by a symmetric change in the length of the stub. The effect of the various parameters of the structure on the slope of the phase curve is studied. Simulations are carried out with Ansoft
Farzaneh Ahmadi +2 more
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Investigation of slot reflectarray antennas
2018 Moscow Workshop on Electronic and Networking Technologies (MWENT), 2018Research results of slot metal-only reflectarray antennas are presented in this paper. The analysis is based on both full-wave and unit-cell simulation. The solution is based on the Method of Moments that is applied to integral equations in terms of magnetic-current distribution functions. Reflection phase of one- and two-layer unit cell is considered.
Svyatoslav V. Ballandovich +2 more
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Design of Wideband Reflectarray Antennas
2020 14th European Conference on Antennas and Propagation (EuCAP), 2020The method providing bandwidth increasing of reflect array antennas is proposed. The main idea of this method is to compensate phase errors by means of the spatial separation of layers with reflective elements. A full-metal reflectarray antenna has been designed with the use of the proposed method, manufactured and tested.
Yuri G. Antonov +4 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
openaire +4 more sources