Proceedings ArticleDOI
Dual-Band Triple Mode OAM Generation Using Annular Slot Microstrip Radiator
Shailendra Singh,Madhur Deo Upadhayay,Srikanta Pal +2 more
- pp 603-606
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TLDR
In this article, a design of a four-port, dual-band uniform circular array (UCA) to generate three orthogonal OAM modes (OAM mode 0, +1 and -1) at two different frequency 2.45 GHz (ISM band/WLAN) and 5.4 GHz (WLAN).Abstract:
This paper presents a design of a four-port, dual-band uniform circular array (UCA) to generate three orthogonal Orbital Angular Momentum (OAM) modes (OAM mode 0, +1 and -1) at two different frequency 2.45 GHz (ISM band/WLAN) and 5.4 GHz (WLAN). The proposed antenna is designed with the help of four 50-Ohm microstrip line radiator (MLR) having an annular slot on the ground plane. The effect of variation of the physical design parameters (like the length of 50-Ohm MLR, the radius of annular slot and annular slot width) on reflection coefficient and the radiation pattern is shown and discussed.read more
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Journal Article
Holographic generation and orbital angular momentum of high-order Mathieu beams : Special issue on atoms and angular momentum of light
Sabino Chávez-Cerda,Miles J. Padgett,I. Allison,G.H.C. New,Julio C. Gutiérrez-Vega,Anna T. O'Neil,I. Macvicar,Johannes Courtial +7 more
TL;DR: In this article, the first experimental generation of high-order Mathieu beams and confirm their propagation invariance over a limited range were reported, using a computer-generated phase hologram.
Journal ArticleDOI
Ultrathin Complementary Metasurface for Orbital Angular Momentum Generation at Microwave Frequencies
TL;DR: In this paper, the authors proposed an ultrathin complementary metasurface that converts a left-handed (right-handed) circularly polarized plane wave without orbital angular momentum (OAM), which is associated with the azimuthal phase of the complex electric field.
References
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Journal ArticleDOI
Utilization of photon orbital angular momentum in the low-frequency radio domain
Bo Thidé,Holger Then,J. Sjöholm,K. Palmer,Jan Bergman,Tobia Carozzi,Ya. N. Istomin,Nail Ibragimov,Raisa Khamitova +8 more
TL;DR: It is shown numerically that vector antenna arrays can generate radio beams that exhibit spin and orbital angular momentum characteristics similar to those of helical Laguerre-Gauss laser beams in paraxial optics.
Journal ArticleDOI
Encoding many channels on the same frequency through radio vorticity: first experimental test
Fabrizio Tamburini,Elettra Mari,Anna Sponselli,Bo Thid,Bo Thid,Antonio Bianchini,Filippo Romanato +6 more
TL;DR: In this paper, it was shown experimentally that two beams of incoherent radio waves, transmitted on the same frequency but encoded in two different orbital angular momentum states, can simultaneously transmit two independent radio channels.
Journal ArticleDOI
Orbital Angular Momentum in Radio—A System Study
Siavoush M. Mohammadi,L. K. S. Daldorff,Jan Bergman,Roger Karlsson,Bo Thidé,K. Forozesh,Tobia Carozzi,B. Isham +7 more
TL;DR: In this paper, the authors used vector field-sensing electric and magnetic triaxial antennas to estimate the orbital angular momentum (OAM) of radio beams, assuming ideal (noiseless) conditions and that the beam axis is known.
Journal ArticleDOI
Experimental circular phased array for generating OAM radio beams
Qiang Bai,Alan Tennant,Ben Allen +2 more
TL;DR: In this paper, a circular phased array antenna that can generate orbital angular momentum (OAM) radio beams in the 10 GHz band is described, which consists of eight inset-fed patch elements and a microstrip corporate feeding network.
Journal ArticleDOI
Orbital-Angular-Momentum-Based Electromagnetic Vortex Imaging
TL;DR: In this article, a novel radar imaging technique based on orbital angular momentum (OAM) modulation is presented, which can benefit the development of novel information-rich radar based on OAM, as well as radar target recognition.