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Compact four-unit ultra-wideband MIMO antenna

A four-element, ultra-broadband technology, applied in antennas, antenna couplings, antenna components, etc., can solve problems such as unsatisfactory bandwidth and large antenna size, and achieve the effects of easy popularization, low cost, and strong diversity characteristics

Pending Publication Date: 2022-03-25
HANGZHOU DIANZI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the four-element ultra-wideband MIMO antennas so far are too large in size, and the bandwidth is not very ideal.

Method used

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  • Compact four-unit ultra-wideband MIMO antenna
  • Compact four-unit ultra-wideband MIMO antenna
  • Compact four-unit ultra-wideband MIMO antenna

Examples

Experimental program
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Effect test

Embodiment Construction

[0035] The present invention is further analyzed below in conjunction with specific examples.

[0036] Depend on figure 1 It can be seen that the UWB antenna includes an FR4 dielectric substrate S of 45mm×45mm×1.7mm, four metal radiation patches P and a metal ground plane G covering the upper and lower surfaces of the dielectric substrate.

[0037] Depend on figure 2 It can be seen that the four metal radiation patches P are center-symmetric structures, and are distributed at the four corners of the substrate, that is, they are orthogonally distributed, adjacent units are perpendicular to each other, and diagonal units are antiparallel. Each radiating patch P includes a semicircular patch P1 with a notch, and a stepped microstrip line F; the stepped microstrip line F is set outward, which adopts a two-stage structure, and a rectangular notch is etched on the top ; The semicircular patch P1 with a notch is set inwardly, and one end of the semicircular patch with a radius of ...

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PUM

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Abstract

The invention discloses a compact four-unit ultra-wideband MIMO (Multiple Input Multiple Output) antenna, which is characterized by comprising a dielectric substrate S, four radiation patches P and a metal ground plane G, the metal ground plane G comprises four metal grounds and windmill type branches; each metal ground comprises a metal defect ground G1 and an L-shaped floor branch knot; the windmill type branch knots are mutually coupled with the four radiation patches P, the windmill type branch knots are connected at the central position, and currents generated by coupling are equal in magnitude and opposite in direction, so that mutual counteraction is realized. When the antenna is fed, a fringe field between the radiation patches and the metal ground generates radiation, and meanwhile, the four radiation patches are coupled; the metal defect ground G1, the L-shaped floor branch knot and the windmill type branch knot serve as reflecting plates to play a decoupling role; a windmill-shaped branch extending from the center plays a role in isolating the four radiation patches, and the windmill-shaped branch and the L-shaped floor branch jointly form a decoupling structure.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, and relates to a compact four-element ultra-wideband MIMO antenna, which can be applied in wireless communication systems. Background technique [0002] With the development of mobile Internet, people have higher and higher requirements for terminal equipment. The ultra-wideband UWB system has an extremely wide spectrum range, and has a very high data transmission rate, and can resist external interference and noise. Since the United States and the Asia-Pacific region authorized the UWB civil frequency band 3.1GHz-10.6GHz, and the European region authorized 6.0GHz-8.5GHz, people have launched a lot of research in the UWB wireless field. [0003] According to Shannon's theorem, increasing the bandwidth can increase the transmission rate of information, but due to the limitation of power, the transmission rate of information will also be limited. But combining MIMO (multiplt-input ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/36H01Q1/50H01Q13/08H01Q1/52H01Q1/48
CPCH01Q1/36H01Q1/50H01Q13/08H01Q1/521H01Q1/48
Inventor 吴爱婷赵明阳方志华陶应祥
Owner HANGZHOU DIANZI UNIV
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