Circular array rotating fractal nested high-order vortex electromagnetic wave generation and separation method and device
A vortex electromagnetic wave, high-level technology, applied in electromagnetic wave transmission systems, antenna arrays, electromagnetic transceivers, etc., can solve problems such as unfavorable communication system movement and maintenance
Active Publication Date: 2018-08-24
XIDIAN UNIV +1
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[0004] According to current literature reports: the more available modes of vortex electromagnetic waves in a communication system, the more obvious the capacity increase effect of the system, and correspondingly, the larger the physical size of the receiving / transmitting antenna of the system is required, which is not conducive to the movement and communication of the communication system. Therefore, it is of theoretical and practical significance to study the technology of generating high-order vortex electromagnetic waves with smaller physical size antennas. At present, there are very few reports on the generation and reception separation methods of high-order multi-mode vortex electromagnetic waves in the field of wireless communication.
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[0011] The present invention describes a Uniform Circle Array (UCA, Uniform CircleArray) rotating fractal nested antenna structure facing the propagation of high-order vortex electromagnetic waves, and discusses the use of high-order vortex electromagnetic wave UCA rotating fractal nested antennas to realize multi-mode The generation of vortex electromagnetic waves, its reception and multi-mode separation methods, and the physics of using high-order vortex electromagnetic wave UCA rotating fractal nested antennas to realize multi-mode vortex electromagnetic waves generation, reception and multi-mode separation device.
[0012] In the wireless communication system, it is feasible for UCA to receive / transmit multi-mode vortex electromagnetic waves (uniform circular array antenna transmits and receives vortex electromagnetic waves, see "B.Thidé, H.Then, J. et al, "Utlilization of photon orbital angular momentum in the low-frequency radio domain," Phys. Rev. Lett., vol.99, no.8, ...
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The invention discloses a high-order vortex electromagnetic wave antenna array element layout structure based on a uniform circle array (UCA, Uniform Circle Array) rotating fractal nesting, that is, a UCAn (n=0, 1, ..., N- 1) After rotating in the same direction in turn, the UCAns are distributed at equal intervals on a circle with a radius of r2 to form a rotating nested structure, and the minimum element spacing between adjacent UCAns is not greater than λ / 2; the high-order vortex is disclosed The electromagnetic wave signal generation method is to modulate the independent multi-modal signal of UCAn to a certain mode vortex wave generated by the UCA with UCAn as the array element; the disclosed high-order vortex electromagnetic wave signal separation method is based on the antenna array of the present invention Element layout structure, N-point spatial orthogonal transformation is performed on the response of the array elements with the same serial number from each UCAn, and the UCAn independent vortex signal is demodulated, and then M-point spatial orthogonal transformation is performed on the UCAn independent vortex signal to separate the modulation information; open The realization device of the UCA rotating fractal nested high-order vortex electromagnetic wave signal generation method and the realization device of the receiving separation method are provided.
Description
technical field [0001] The invention relates to a high-order vortex electromagnetic wave generation and reception separation method and device, belonging to the technical fields of communication signal processing technology and radar signal processing technology. Background technique [0002] For communication technology workers, it is an eternal theme to find new ways to increase the channel capacity of the system without increasing the bandwidth. At present, the channel capacity enhancement technology of conventional wireless communication systems is quite mature, so people have turned their attention to the field of non-traditional electromagnetic waves in order to find technological breakthroughs. According to the classical electrodynamic theory, vortex electromagnetic waves with the same frequency and different modes can share the channel at the same time. In 2011, Bo Thidé and Italian colleagues demonstrated the experiment of independent information transmission of vor...
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IPC IPC(8): H04B10/40H04B10/60H04B10/516H04B10/90H01Q21/00
CPCH01Q21/00H04B10/40H04B10/516H04B10/60H04B10/90H01Q3/36H01Q21/20H04B7/084H01Q3/30
Inventor赵林军张海林梁芳
OwnerXIDIAN UNIV