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Frequency Tunable Graphene Metamaterial Reflectarray
Wireless Personal Communications, 2017In this paper, the radiation characteristics of frequency tunable graphene based metamaterial reflectarray have been investigated. The unit-cell consists of graphene two gaps split-ring-resonator (SRR) printed on a thick SiO2 substrate. The metamaterial parameters of the unit-cell have been calculated at different graphene chemical potentials and ...
Saber H. Zainud-Deen +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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1-bit Reflectarray Element Based on a Single Switch for Reconfigurable Reflectarrays
2019 Antennas Design and Measurement International Conference (ADMInC), 2019In this paper, we present a new reconfigurable element using p-i-n diode for reconfigurable reflectarray antennas. The element cell is realized using a single substrate, a ground plane and only a single p-i-n diode embedded in the element, hence very low complexity.
Quang Thang Tran, B.D. Nguyen
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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
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Microstrip patches for a reflectarray
IEEE Antennas and Propagation Society International Symposium. 1999 Digest. Held in conjunction with: USNC/URSI National Radio Science Meeting (Cat. No.99CH37010), 2003Microstrip patch element geometry is indeed an important factor in the design of a microstrip reflectarray. In essence, each of these perfectly conductive elements creates a minuscule correction to the reflection phase of the scattered field so that a phase coherent main beam is constructed.
K.Y. Sze, L. Shafai
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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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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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