Miniaturized high-isolation circularly polarized diversity antenna based on dual-mode resonance

A diversity antenna and isolation technology, applied in resonant antennas, basically flat resonant elements, antennas, etc., can solve the problems of complex and stable fixing devices, high antenna profiles, and high profiles

Active Publication Date: 2021-07-30
XIDIAN UNIV +1
View PDF13 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, technology 1 adopts a multi-layer structure, the profile of the antenna is high, and the circular polarization diversity realized by mechanical rotation will also be greatly restricted in practical applications, such as insufficient rotation accuracy and deviation, and mechanical rotation reduces the use of the antenna. life expectancy
Both technology 2 and technology 3 contain an air layer in structure, and the overall structure of the antenna requires a complicated and stable fixing device, and the profile is high. In addition, the diode c...

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
  • Miniaturized high-isolation circularly polarized diversity antenna based on dual-mode resonance
  • Miniaturized high-isolation circularly polarized diversity antenna based on dual-mode resonance
  • Miniaturized high-isolation circularly polarized diversity antenna based on dual-mode resonance

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] see Figure 1 to Figure 4 , a miniaturized high-isolation circular polarization diversity antenna based on dual-mode resonance, comprising a metal floor 3, a dielectric layer 2, and two groups of mirror-symmetrically arranged radiating units; each group of said radiating units includes a radiating patch 1 , a short-circuit component group and a feeding probe 5; the feeding probe 5 feeds power to the radiation patch 1, and the radiation patch 1 is connected to the metal floor 3 through the short-circuit component group; the The dielectric layer 2 is located between the metal floor 3 and the radiation patch 1; the short-circuit component group is used to shield the coupling between the two radiation patches 1 and maintain the radiation patch 1 after being enlarged by 2 times Inspired by TM 11 Die and TM 31 / 13 The resonant frequency of the mode remains unchanged; the radiation patch 1 is provided with a hollow groove 6, and the hollow groove 6 is used to gather the TM 1...

Embodiment 2

[0038] On the basis of the above structure, the radiation patch 1 is rectangular; the short-circuit component group includes metal pillars 4, and the metal pillars 4 are arranged in sequence along the first edge and the second edge of the radiation patch 1 It is L-shaped; the first side is adjacent to the second side, and the first side is a side close to another radiating unit.

[0039] The patch corresponding to the radiation patch 1 is enlarged by twice (subsequently called the large patch), and the TM formed by the excitation 11 Die and TM 31 / 13 The far-field radiation pattern of the module is a square patch end-fire—it is composed of four radiation lobes of the same size, and there is an obvious depression between each two radiation lobes, and the depressions are all located on the vertical line of the large patch . The short-circuit component group is loaded along the position of the vertical line, and the far-field radiation direction can be Figure four Equally divi...

Embodiment 3

[0041] On the basis of the above structure, the hollow groove 6 is located on the diagonal of the radiation patch 1 , and the extension line in the length direction passes through the corner of the short-circuit component group. The cutout slots 6 adjust TM 31 / 13 resonant frequencies of the modes, such that the mutually orthogonal TM 11 Die and TM 31 / 13 When the resonant frequency of the mode is close, the circular polarization can be achieved in a specific frequency range.

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 provides a miniaturized high-isolation circularly polarized diversity antenna based on dual-mode resonance. The miniaturized high-isolation circularly polarized diversity antenna comprises a metal floor, a dielectric layer and two groups of radiation units which are arranged in a mirror symmetry manner, wherein each group of radiation units comprises a radiation patch, a short circuit component group and a feed probe; the feed probe feeds power to the radiation patch, and the radiation patch is connected with the metal floor through the short circuit component group. The dielectric layer is located between the metal floor and the radiation patch; the short circuit component group is used for shielding the coupling between the two radiation patches and maintaining the resonant frequencies of a TM11 mode and a TM31/13 mode excited after the radiation patches are amplified by two times to be unchanged; the radiation patch is provided with a hollow-out groove, and the hollow-out groove is used for gathering part of electric fields of a TM11 mode and a TM31/13 mode. And the two groups of radiation units in mirror symmetry excite left-handed and right-handed circularly polarized waves respectively to form a diversity antenna. The working frequency of the radiation patch is the working frequency amplified by two times, and the isolation degree between the two radiation units is high, so that the diversity antenna can be made smaller under the condition that the working performance is not influenced.

Description

technical field [0001] The invention relates to the technical field of wireless communication, in particular to a miniaturized high-isolation circular polarization diversity antenna based on dual-mode resonance. Background technique [0002] In recent years, with the rapid development of modern wireless communication systems, modern wireless mobile communication systems, especially terminal antennas, need to have reliable and stable electromagnetic wave radiation performance and higher communication capacity to further meet the needs of large data volume services and reliable transmission requirements. Circular polarization diversity antennas can improve the power capacity of traditional antennas, and solve the problem of weak received signals caused by misalignment of the polarization of traditional antennas and the interference of reflected waves during signal transmission. However, circular polarization diversity antennas often require good isolation between ports, and t...

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): H01Q9/04H01Q1/52H01Q25/04
CPCH01Q9/0428H01Q9/0414H01Q9/045H01Q9/0421H01Q1/521H01Q25/04
Inventor 刘能武郜森傅光云宇祝雷
Owner XIDIAN 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