Frequency reconfigurable MIMO antenna

An antenna and frequency technology, applied in the field of antennas, can solve the problems of inability to guarantee accurate switching, small frequency difference between different frequency bands, etc., to achieve good isolation effect, improve isolation, and simple structure.

Active Publication Date: 2022-08-02
UNIV OF ELECTRONICS SCI & TECH OF CHINA
View PDF10 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the position of the PIN diode of the antenna is too close to ensure accurate switching in each mode, and the frequency difference between different frequency bands is small

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
  • Frequency reconfigurable MIMO antenna
  • Frequency reconfigurable MIMO antenna
  • Frequency reconfigurable MIMO antenna

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0020] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0021] like figure 1 Shown is a schematic structural diagram of a frequency reconfigurable MIMO antenna according to the present embodiment, the antenna is a 90-degree rotationally symmetric structure, and is composed of four frequency reconfigurable slot antennas. It includes a square dielectric substrate, four rectangular microstrip feeders arranged on the front of the dielectric substrate, a grounding plate covering the back of the dielectric substrate, and four rectangular slits are arranged on the grounding plate as radiators.

[0022] The dielectric substrate is an FR4 dielectric substrate with a relative permittivity of 4.4, a loss tangent of 0.025, and a size of 70mm×70mm×1.6mm.

[0023] The long sides of the rectangular slit are respectively parallel to the four sides of the dielectric substrate, the length of the rectangular ...

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 frequency reconfigurable MIMO antenna, and belongs to the technical field of antennas. The antenna is of a 90-degree rotational symmetry structure and comprises a dielectric substrate, a grounding plate arranged on the back face of the dielectric substrate and four rectangular gaps serving as radiators, and the two ends of each rectangular gap are each provided with a PIN diode. The micro-strip feeder line is arranged on the front surface of the dielectric substrate; eBG structures for improving the isolation between the antenna units are arranged between the adjacent antenna units. Frequency reconfiguration of the MIMO antenna is achieved through on-off of the PIN diodes, the MIMO antenna has good radiation characteristics at 2.5 GHz and 3.0 GHz, the isolation degree between adjacent antenna units is high, and meanwhile the MIMO antenna has the advantages of being low in profile, small in size, low in cost and the like.

Description

technical field [0001] The invention belongs to the technical field of antennas, and in particular relates to a MIMO antenna with reconfigurable frequency. Background technique [0002] In recent years, wireless communication technology has developed rapidly, and more and more emerging products have entered everyone's field of vision, accompanied by the improvement of a series of design parameters of wireless communication systems, such as full functions, high capacity, fast speed and small size. . Antennas act as a medium for mutual conversion between electrical signals and electromagnetic wave signals, and play a pivotal role in wireless communication systems. Therefore, the design requirements of antennas are correspondingly more stringent. Traditional antennas are directional designed for a single functional application and cannot reconstruct their own parametric results. If these single-performance antennas are used to form a communication system, the purpose of multi...

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
Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/38H01Q13/10H01Q1/50H01Q1/52H01Q1/24H01Q5/10
CPCH01Q1/38H01Q13/106H01Q1/50H01Q5/10H01Q1/521H01Q1/241Y02D30/70
Inventor 洪劲松徐藏申红红郭卓航马平兆
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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