We show numerically that vector antenna arrays can generate radio beams that exhibit spin and orb... more We show 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. For low frequencies (& 1 GHz), digital techniques can be used to coherently measure the instantaneous, local field vectors and to manipulate them in software. This enables new types of experiments that go beyond what is possible in optics. It allows information-rich radio astronomy and paves the way for novel wireless communication concepts.
Using a general theorem on conservation laws for arbitrary differential equations proved by Ibrag... more Using a general theorem on conservation laws for arbitrary differential equations proved by Ibragimov ͓J. Math. Anal. Appl. 333, 311-320 ͑2007͔͒, we have derived conservation laws for Dirac's symmetrized Maxwell-Lorentz equations under the assumption that both the electric and magnetic charges obey linear conductivity laws ͑dual Ohm's law͒. We find that this linear system allows for conservation laws which are nonlocal in time.
We show numerically that vector antenna arrays can generate radio beams that exhibit spin and orb... more We show 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. For low frequencies ( 1 GHz), digital techniques can be used to coherently measure the instantaneous, local field vectors and to manipulate them in software. This enables new types of experiments that go beyond what is possible in optics. It allows information-rich radio astronomy and paves the way for novel wireless communication concepts.
We show numerically that vector antenna arrays can generate radio beams that exhibit spin and orb... more We show 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. For low frequencies (& 1 GHz), digital techniques can be used to coherently measure the instantaneous, local field vectors and to manipulate them in software. This enables new types of experiments that go beyond what is possible in optics. It allows information-rich radio astronomy and paves the way for novel wireless communication concepts.
Using a general theorem on conservation laws for arbitrary differential equations proved by Ibrag... more Using a general theorem on conservation laws for arbitrary differential equations proved by Ibragimov ͓J. Math. Anal. Appl. 333, 311-320 ͑2007͔͒, we have derived conservation laws for Dirac's symmetrized Maxwell-Lorentz equations under the assumption that both the electric and magnetic charges obey linear conductivity laws ͑dual Ohm's law͒. We find that this linear system allows for conservation laws which are nonlocal in time.
We show numerically that vector antenna arrays can generate radio beams that exhibit spin and orb... more We show 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. For low frequencies ( 1 GHz), digital techniques can be used to coherently measure the instantaneous, local field vectors and to manipulate them in software. This enables new types of experiments that go beyond what is possible in optics. It allows information-rich radio astronomy and paves the way for novel wireless communication concepts.
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Papers by R. Khamitova