Sampling receiving method for demultiplexing RF track angular momentum mode

A technology of orbital angular momentum and mode demultiplexing, which is applied in the sampling and receiving field of radio frequency orbital angular momentum mode demultiplexing, can solve the problems of inconvenient transportation, installation, difficult preparation, and high cost, and achieves the promotion of practicality and flexible distribution. , reduce the effect of preparation

Active Publication Date: 2015-05-06
ZHEJIANG UNIV
View PDF4 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Large-aperture receivers are not only expensive, but also difficult to prepare, and inconvenient to transport and install
Mor

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Sampling receiving method for demultiplexing RF track angular momentum mode
  • Sampling receiving method for demultiplexing RF track angular momentum mode
  • Sampling receiving method for demultiplexing RF track angular momentum mode

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0013] Below in conjunction with accompanying drawing, the present invention is described in further detail:

[0014] figure 1 is the intensity distribution diagram of the orbital angular momentum beam with the topological charges l being 2, 3, 4, and the black in the center is the energy zero region. Obviously, the larger the topological charge l is, the larger the radius of the region where the central energy is zero. In order to improve the receiving efficiency, the size of the receiving aperture at the receiving end needs to be selected at the energy of the main lobe of the beam. The more the number of multiplexing channels, the larger the topological charge l, and the larger the receiving aperture of the receiving end. This condition limits the practical application of orbital angular momentum beams.

[0015] figure 2 A model for sampled reception is given. On the plane perpendicular to the main axis of orbital angular momentum beam propagation, take 1 / n arcs of con...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a sampling receiving method for demultiplexing an RF track angular momentum mode, and aims at solving the problems of high cost, large size and inconvenient mode multiplexing of the complete receiving scheme for the track angular momentum beams. The sampling receiving method is that p antennas are uniformly arranged on 1/n arc of a multiplexing beam composed of p RF track angular momentum waves of which the topological charges li meet a certain rule, wherein the 1n/ arc is concentric with a transmission main shaft and vertical to the plane of the beam transmission main shaft; the angular intervals of the antennas are 2 Pi/np; if the topological charges li of the P multiplexing beam meets that li=l+nm, l is the any track angular momentum topological charge, m is an integer, and the absolute value of the difference of any two topological charges is less than (p-1)n, the mode demultiplexing of the group of multiplexing beams composed of the p track angular momentum can be performed by sampling and receiving through the p antennas, and the inter-mode crosstalk is small.

Description

technical field [0001] The invention relates to the field of radio frequency orbital angular momentum beam mode demultiplexing, in particular to a sampling receiving method for radio frequency orbital angular momentum mode demultiplexing. Background technique [0002] As the world enters the mobile Internet era, the spectrum gap for mobile communication services is becoming increasingly serious. Due to the limited high-quality spectrum resources in the low frequency band, it is difficult to meet the new demands of mobile communications only by allocating new spectrum. At present, the expansion of information capacity based on the dimensions of frequency spectrum, phase, and amplitude of electromagnetic waves has been fully developed and utilized. It is a major scientific and technical challenge to find new physical parameter dimensions to realize electromagnetic wave communication technology and meet the demand of order-of-magnitude increase in communication capacity within...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): H04B7/08
Inventor 郑史烈陈弋凌章献民金晓峰池灏
Owner ZHEJIANG UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap