CN204333258U - A kind of compact dual-frequency mimo antenna based on Meta Materials - Google Patents
A kind of compact dual-frequency mimo antenna based on Meta Materials Download PDFInfo
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- CN204333258U CN204333258U CN201420691210.5U CN201420691210U CN204333258U CN 204333258 U CN204333258 U CN 204333258U CN 201420691210 U CN201420691210 U CN 201420691210U CN 204333258 U CN204333258 U CN 204333258U
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- 239000000463 material Substances 0.000 title claims abstract description 9
- 230000005404 monopole Effects 0.000 claims abstract description 26
- 239000000758 substrate Substances 0.000 claims abstract description 19
- 239000003990 capacitor Substances 0.000 claims abstract description 10
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 239000010949 copper Substances 0.000 claims description 4
- 238000002955 isolation Methods 0.000 abstract description 8
- 230000008878 coupling Effects 0.000 abstract description 3
- 238000010168 coupling process Methods 0.000 abstract description 3
- 238000005859 coupling reaction Methods 0.000 abstract description 3
- 230000009977 dual effect Effects 0.000 abstract description 3
- 238000012545 processing Methods 0.000 abstract description 2
- 238000004088 simulation Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006880 cross-coupling reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005562 fading Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
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Abstract
The utility model discloses a kind of compact dual-frequency mimo antenna based on Meta Materials, described antenna is symmetrical, comprises rectangle FR4 substrate, is equipped with two rectangle ground strips, microstrip line and circular-shaped monopole sub antenna in the both sides of the upper surface of rectangle FR4 substrate; Two rectangle ground strips are symmetrically distributed in the both sides of microstrip line, and microstrip line is connected with circular-shaped monopole sub antenna, circular-shaped monopole sub antenna have one along the rectangular channel and one and the homocentric arcuate slots of circular-shaped monopole sub antenna in microstrip line direction; One end of rectangular channel is communicated with arcuate slots, and the other end connects an interdigital capacitor; A split ring resonator is provided with in the centre of the upper surface of rectangle FR4 substrate.The utility model antenna cost is low and size is relatively little, has dual frequency characteristics and has wider impedance bandwidth in WLAN 2.4GHz and 5GHz two frequency ranges; There is low coupling, high isolation, low section, easily conformal, be convenient to the advantages such as processing and fabricating.
Description
Technical field
The utility model belongs to wireless communication field and antenna technology, relates to the compact dual-frequency MIMO antenna be coupled between a kind of effective suppressing antenna.
Background technology
Multiple-input and multiple-output (MIMO) system is the study hotspot of wireless communication field in recent years, is considered the important component part of forth generation mobile communication technology.Its main thought is, uses multiple antenna simultaneously, utilize diversity technique at the transmitting terminal of wireless link and receiving terminal, under the prerequisite of not occupying volume external spectrum bandwidth sum antenna transmitted power, effectively improves channel capacity or improves the reliability of system.The high-performance of MIMO system depends primarily on the multipath fading signal arriving each antenna element must be highly low relevant, and this needs the low-cross coupling between antenna element and high isolation.
In the current and following MIMO system, no matter be base station or portable terminal, paster antenna is all one of antenna type commonly used the most.If can realize the higher miniaturization of patch antenna element self, to place the antenna of more more number, this will meet the demand of terminal miniaturization.On the other hand, the patch antenna element of MIMO system particularly in mobile terminal is usually all at a distance of comparatively near, and its bandwidth is compared individual antenna and also can be greatly affected.Therefore, the research and design miniaturization broadband paster antenna that is suitable for MIMO system will have profound significance for the development of future wireless system.
In current multiband multi-antenna terminal product, must consider to be coupled between antenna, be guarantee multiband isolation and the problem effectively solving antenna miniaturization, metamaterial structure split ring resonator can be utilized to break through the restriction of traditional antenna.
Summary of the invention
The purpose of this utility model is for the deficiencies in the prior art, provides a kind of compact dual-frequency mimo antenna based on Meta Materials.
The purpose of this utility model is achieved through the following technical solutions: a kind of compact dual-frequency mimo antenna based on Meta Materials, described antenna is symmetrical, comprise rectangle FR4 substrate, be equipped with two rectangle ground strips, microstrip line and circular-shaped monopole sub antenna in the both sides of the upper surface of rectangle FR4 substrate; Described two rectangle ground strips are symmetrically distributed in the both sides of microstrip line, and microstrip line is connected with circular-shaped monopole sub antenna, circular-shaped monopole sub antenna have one along the rectangular channel and one and the homocentric arcuate slots of circular-shaped monopole sub antenna in microstrip line direction; One end of rectangular channel is communicated with arcuate slots, and the other end connects an interdigital capacitor; Be provided with a split ring resonator in the centre of the upper surface of rectangle FR4 substrate, described split ring resonator is straight-flanked ring, and opening forward, and two ring ends of split ring resonator all vertically extend certain distance in ring.
Described rectangle ground strip, microstrip line, circular-shaped monopole sub antenna and split ring resonator are copper paster; Rectangle FR4 substrate is of a size of
; Rectangle ground strip is of a size of
; Microstrip line is of a size of
; The radius of circular-shaped monopole sub antenna is 5.1mm; Arc length and the width of arcuate slots are respectively 5.7mm and 0.5mm, the length of rectangular channel and be widely respectively 7.5mm and 0.5mm; The interdigital number of described interdigital capacitor is 3, is highly 1mm, and each interdigital height and width are respectively 0.8mm and 0.2mm; Split ring resonator is of a size of
, the width of ring is 0.5mm, and A/F is 0.7mm, and the opening length that extends internally is 3.7mm, and the rear end of split ring resonator and the rear end of rectangle FR4 substrate are at a distance of 8mm.
The beneficial effects of the utility model are:
(1) cost is low and size is relatively little.Whole antenna size is
, can be accepted by most of application scenario.
(2) this antenna has dual frequency characteristics, and has wider impedance bandwidth in WLAN 2.4GHz and 5GHz two frequency ranges, is respectively 2.35GHz-2.50GHz, 4.9GHz-6GHz.
(3) antenna has very high isolation, and in working frequency range, its isolation is all greater than 15dB, achieves the feature of low coupling, high isolation.
(4) the antenna material that only adopts FR4, copper two kinds the most frequently used, and be planar structure completely, without via hole.Therefore there is low section, easily conformal, be convenient to the advantages such as processing and fabricating.
Accompanying drawing explanation
Fig. 1 is the overall structure front view of antenna;
Fig. 2 is the reflection coefficient simulation result figure of antenna;
Fig. 3 is the simulation result figure of the transmission coefficient of antenna;
In figure, rectangle FR4 substrate 1, rectangle ground strip 2, microstrip line 3, circular-shaped monopole sub antenna 4, rectangular channel 5, arcuate slots 6, interdigital capacitor 7, split ring resonator 8.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further details.
As shown in Figure 1, the utility model is for the application demand of WLAN 2.4GHz and 5GHz two frequency range small mobile terminals mimo antenna, carry out the research of the double frequency mimo antenna based on Meta Materials: described antenna is symmetrical, comprise rectangle FR4 substrate 1, be equipped with two rectangle ground strips 2, microstrip line 3 and circular-shaped monopole sub antenna 4 in the both sides of the upper surface of rectangle FR4 substrate 1; Described two rectangle ground strips 2 are symmetrically distributed in the both sides of microstrip line 3, and microstrip line 3 is connected with circular-shaped monopole sub antenna 4, circular-shaped monopole sub antenna 4 have one along the rectangular channel 5 and one and the homocentric arcuate slots 6 of circular-shaped monopole sub antenna 4 in microstrip line 3 direction; One end of rectangular channel 5 is communicated with arcuate slots 6, and the other end connects an interdigital capacitor 7; Be provided with a split ring resonator 8 in the centre of the upper surface of rectangle FR4 substrate 1, described split ring resonator 8 is straight-flanked ring, and opening forward, and two ring ends of split ring resonator 8 all vertically extend certain distance in ring.
Described rectangle ground strip 2, microstrip line 3, circular-shaped monopole sub antenna 4 and split ring resonator 8 are copper paster; Rectangle FR4 substrate 1 is of a size of
; Rectangle ground strip 2 is of a size of
; Microstrip line 3 is of a size of
; The radius of circular-shaped monopole sub antenna 4 is 5.1mm; Arc length and the width of arcuate slots 6 are respectively 5.7mm and 0.5mm, the length of rectangular channel 5 and be widely respectively 7.5mm and 0.5mm; The interdigital number of described interdigital capacitor 7 is 3, is highly 1mm, and each interdigital height and width are respectively 0.8mm and 0.2mm; Split ring resonator 8 is of a size of
, the width of ring is 0.5mm, and A/F is 0.7mm, and the opening length that extends internally is 3.7mm, and the rear end of split ring resonator 8 and the rear end of rectangle FR4 substrate 1 are at a distance of 8mm.
Operation principle of the present utility model is as follows:
The circular-shaped monopole sub antenna 4 of the utility model double frequency mimo antenna itself can produce the resonance of about 5.4GHz, by loading arcuate slots 6, rectangular channel 5 and interdigital capacitor 7 in circular-shaped monopole sub antenna 4, forming equivalent LC resonant circuit, the low-frequency resonant of an about 2.4GHz can be produced when not increasing antenna size and retain former high-frequency resonant.By adjusting the arc length of arcuate slots 6, corresponding equivalent inductance can being adjusted, by adjusting the interdigital height of interdigital capacitor 7, corresponding equivalent capacity can be adjusted.The effect of metamaterial structure split ring resonator 8 is the couplings between minimizing two circular-shaped monopole sub antenna 4, can be adjusted the effect of uncoupling by the position and development length adjusting split ring resonator 8.
The reflection coefficient of power of-the 10dB of this antenna
with
simulation result as shown in Figure 2, can find out that this antenna has dual frequency characteristics, and has very wide bandwidth two frequency ranges, is respectively 2.35GHz-2.50GHz, 4.9GHz-6GHz, covers WLAN 2.4GHz and 5GHz two frequency ranges.
The transmission coefficient of this antenna
simulation result as shown in Figure 3, can find out that this antenna has very high isolation, in working band, transmission coefficient is all less than-15dB, and namely isolation is all greater than 15dB.
Above-described embodiment is available to those of ordinary skill in the art to realize or uses of the present utility model; those of ordinary skill in the art can when not departing from utility model thought of the present utility model; various modifications or change are made to above-described embodiment; thus protection range of the present utility model not limit by above-described embodiment, and should be the maximum magnitude meeting the inventive features that claims are mentioned.
Claims (2)
1. the compact dual-frequency mimo antenna based on Meta Materials, it is characterized in that, described antenna is symmetrical, comprises rectangle FR4 substrate (1), is equipped with two rectangle ground strips (2), microstrip line (3) and circular-shaped monopole sub antenna (4) in the both sides of the upper surface of rectangle FR4 substrate (1); Described two rectangle ground strips (2) are symmetrically distributed in the both sides of microstrip line (3), microstrip line (3) is connected with circular-shaped monopole sub antenna (4), circular-shaped monopole sub antenna (4) has one along the rectangular channel (5) and one and the homocentric arcuate slots (6) of circular-shaped monopole sub antenna (4) in microstrip line (3) direction; One end of rectangular channel (5) is communicated with arcuate slots (6), and the other end connects an interdigital capacitor (7); Be provided with a split ring resonator (8) in the centre of the upper surface of rectangle FR4 substrate (1), described split ring resonator (8) is straight-flanked ring, and opening forward, and two ring ends of split ring resonator (8) all vertically extend certain distance in ring.
2. according to claim 1 based on the compact dual-frequency mimo antenna of Meta Materials, it is characterized in that, described rectangle ground strip (2), microstrip line (3), circular-shaped monopole sub antenna (4) and split ring resonator (8) are copper paster; Rectangle FR4 substrate (1) is of a size of
; Rectangle ground strip (2) is of a size of
; Microstrip line (3) is of a size of
; The radius of circular-shaped monopole sub antenna (4) is 5.1mm; Arc length and the width of arcuate slots (6) are respectively 5.7mm and 0.5mm, the length of rectangular channel (5) and be widely respectively 7.5mm and 0.5mm; The interdigital number of described interdigital capacitor (7) is 3, is highly 1mm, and each interdigital height and width are respectively 0.8mm and 0.2mm; Split ring resonator (8) is of a size of
, the width of ring is 0.5mm, and A/F is 0.7mm, and the opening length that extends internally is 3.7mm, and the rear end of split ring resonator (8) and the rear end of rectangle FR4 substrate (1) are at a distance of 8mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420691210.5U CN204333258U (en) | 2014-11-18 | 2014-11-18 | A kind of compact dual-frequency mimo antenna based on Meta Materials |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420691210.5U CN204333258U (en) | 2014-11-18 | 2014-11-18 | A kind of compact dual-frequency mimo antenna based on Meta Materials |
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| CN204333258U true CN204333258U (en) | 2015-05-13 |
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| CN201420691210.5U Withdrawn - After Issue CN204333258U (en) | 2014-11-18 | 2014-11-18 | A kind of compact dual-frequency mimo antenna based on Meta Materials |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105006649A (en) * | 2015-06-30 | 2015-10-28 | 厦门大学 | Electromagnetic wave near field isolation screen and applications thereof |
| CN106129637A (en) * | 2016-08-22 | 2016-11-16 | 南京信息工程大学 | Multiple-antenna MIMO system based on resonant ring decoupling arrangements |
| US10256549B2 (en) | 2017-04-03 | 2019-04-09 | King Fahd University Of Petroleum And Minerals | Compact size, low profile, dual wideband, quasi-yagi, multiple-input multiple-output antenna system |
| CN110323570A (en) * | 2019-07-25 | 2019-10-11 | 西北工业大学 | A kind of all channel antenna isolator based on Meta Materials |
-
2014
- 2014-11-18 CN CN201420691210.5U patent/CN204333258U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105006649A (en) * | 2015-06-30 | 2015-10-28 | 厦门大学 | Electromagnetic wave near field isolation screen and applications thereof |
| CN106129637A (en) * | 2016-08-22 | 2016-11-16 | 南京信息工程大学 | Multiple-antenna MIMO system based on resonant ring decoupling arrangements |
| US10256549B2 (en) | 2017-04-03 | 2019-04-09 | King Fahd University Of Petroleum And Minerals | Compact size, low profile, dual wideband, quasi-yagi, multiple-input multiple-output antenna system |
| CN110323570A (en) * | 2019-07-25 | 2019-10-11 | 西北工业大学 | A kind of all channel antenna isolator based on Meta Materials |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150513 Effective date of abandoning: 20170419 |
|
| AV01 | Patent right actively abandoned |