Results 131 to 140 of about 409 (184)
Dual-Band Passive Beam Steering Antenna Technologies for Satellite Communication and Modern Wireless Systems: A Review. [PDF]
Sensors (Basel)Nabeel MI +4 more
europepmc +1 more source
Some of the next articles are maybe not open access.
Related searches:
Related searches:
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
openaire +1 more source
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
Optimization of a Gangbuster Reflectarray Antenna
2005 IEEE Antennas and Propagation Society International Symposium, 2005In this paper we discuss the optimization of the design, carried out through a pseudo-random optimization algorithm, of a gangbuster reflectarray antenna. The variation of reflection coefficient phase on the reflectarray surface is achieved by varying the length of the local wires in the gangbuster surface. For the optimization, a genetic algorithm has
MUSSETTA, MARCO +4 more
openaire +1 more source
IEEE Transactions on Antennas and Propagation, 1963
A class of antennas that utilizes arrays of elementary antennas as reflecting surfaces has been investigated. An antenna of this type is here called a Reflectarray. It has been found that the Reflectarray combines much of the simplicity of the reflector-type antenna with the performance versatility of the array type. The reflecting surfaces employed in
D. Berry, R. Malech, W. Kennedy
openaire +1 more source
A class of antennas that utilizes arrays of elementary antennas as reflecting surfaces has been investigated. An antenna of this type is here called a Reflectarray. It has been found that the Reflectarray combines much of the simplicity of the reflector-type antenna with the performance versatility of the array type. The reflecting surfaces employed in
D. Berry, R. Malech, W. Kennedy
openaire +1 more source
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
openaire +1 more source
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
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
openaire +1 more source
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
openaire +1 more source
An Amplifying Reconfigurable Reflectarray Antenna
IEEE Transactions on Antennas and Propagation, 2012Electronically tunable reflectarrays and amplifying reflectarrays have attracted considerable research in recent years, however, little work has been done to combine these two features simultaneously in a single design. This paper focuses on the design of such a reflectarray, which can be used as a high gain, reconfigurable transmitting antenna for ...
Krishna Kumar Kishor, Sean Victor Hum
openaire +1 more source