Method for generating radio frequency orbital angular momentum beams based on annular traveling wave antenna

A technology of orbital angular momentum and traveling wave antennas, which is applied in loop antennas, antennas, electrical components, etc., to achieve the effects of easy implementation, increased capacity, and practical application

Active Publication Date: 2013-12-25
ZHEJIANG UNIV
View PDF4 Cites 42 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

So far, most OAM beam generation methods come from the circular array antenna idea designed by Thide et al. in 2007, but the order of the OAM beam generated by this method is limited by the number of circular array antennas. Assuming that the number o

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
  • Method for generating radio frequency orbital angular momentum beams based on annular traveling wave antenna
  • Method for generating radio frequency orbital angular momentum beams based on annular traveling wave antenna
  • Method for generating radio frequency orbital angular momentum beams based on annular traveling wave antenna

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0018] Below in conjunction with accompanying drawing, the present invention is described in further detail:

[0019] 1. Generation of radio frequency OAM beams based on ring traveling wave antennas.

[0020] Assume that the loop traveling wave antenna is an electrical source antenna, such as figure 1 As shown, the current distribution on the antenna satisfies , calculate the radiation field of the loop traveling wave antenna in space.

[0021] The basic idea is: divide the circular antenna into N sections, and ensure that the length of each small section of antenna ΔL<

[0022] E = θ 0 ...

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 relates to a method for generating radio frequency orbital angular momentum beams based on an annular traveling wave antenna. According to the method, the annular traveling wave antenna is in a circular ring shape in spatial distribution, a circular ring is in symmetry with the respect of a Z-axis, all excitation source points on the circular ring are the same in range, the phase position of the circular ring meets exp (il) distribution along the circumference, the antenna excitation sources spread in a traveling wave mode on the circular ring, the radiation of the annular traveling wave antenna in the space can generate radio frequency OAM beams with the same order as the phase position distribution 1, the distribution of all phase position points on the circular ring is adjusted, and radio frequency OAM beams with different orders 1 can be generated. The method for generating the radio frequency orbital angular momentum beams based on the annular traveling wave antenna can be used in an OAM wireless communication system and is integrated with an existing communication technology, and the capacity of a communication system is greatly improved.

Description

technical field [0001] The invention belongs to the technical field of OAM wireless communication, and relates to a method for generating a radio frequency OAM beam based on a ring traveling wave antenna. 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. In this case, it is particularly important to develop new technologies to improve the efficiency of the use of bits / Hz. At present, people have done a lot of research on expanding information capacity resources based on the dimensions of frequency spectrum, phase, and amplitude of electromagnetic waves, such as improving the spectrum utilization rate of a new intelligent wireless communication technology - cognitive radio; improving the spectr...

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): H01Q7/00
Inventor 郑史烈章献民池灏金晓峰
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