CN103872455A - Antenna structure capable of improving isolation degree between close-range antennae - Google Patents
Antenna structure capable of improving isolation degree between close-range antennae Download PDFInfo
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- CN103872455A CN103872455A CN201210530514.9A CN201210530514A CN103872455A CN 103872455 A CN103872455 A CN 103872455A CN 201210530514 A CN201210530514 A CN 201210530514A CN 103872455 A CN103872455 A CN 103872455A
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Abstract
Disclosed is an antenna structure capable of improving the isolation degree between close-range antennae. The antenna structure includes a substrate, a first antenna and a second antenna, which are arranged on the substrate and a grounding layer which is printed on positions of the substrate, excluding the positions of the first antenna and the second antenna. The antenna structure also includes a first isolation groove which is arranged in the grounding layer and located between the first antenna and the second antenna, wherein the first isolation groove includes an arc part and a strip part and the arc part is connected to the tail end of the strip part; and a second isolation groove which is arranged in the grounding layer and located between the first isolation groove and the second antenna. In the antenna structure capable of improving the isolation degree between the close-range antennae, the isolation degree between two antennae is high so that communication quality of the antennae is great.
Description
Technical field
The present invention relates to antenna, particularly a kind of antenna structure that can hoisting isolation degree between close range antenna.
Background technology
Along with developing rapidly of mechanics of communication, also more and more higher to the requirement of communication quality, and the design of communication product is all towards light, thin, short, little future development, so the antenna structure that makes communication product must be limited in certain volume.
If the design of communication product has double-antenna structure, and furnish this double antenna in limited space, the distance between antenna and antenna will be very near, easily cause antenna phase mutual interference in the time of transmitting/receiving wireless signal.Therefore, how designing volume antenna little and that communication quality is stable is the target that must break through in this technical field.
Summary of the invention
In view of this, be necessary to provide a kind of antenna structure that can effectively improve isolation between antennas.
A kind of antenna structure that can hoisting isolation degree between close range antenna comprises: substrate, be arranged at the first antenna and the second antenna on substrate, one ground plane is printed on the position except this first antenna and this second antenna on this substrate, this antenna structure also comprises: the first isolation channel, this first isolation channel is located on this ground plane, between the first antenna and the second antenna, this first isolation channel comprises a curved portions and a bar shaped portion, and this curved portions is connected in the end of this bar shaped portion; And second isolation channel, this second isolation channel is located on this ground plane, between this first isolation channel and the second antenna.
Between the double antenna of antenna structure that can hoisting isolation degree between close range antenna in the present invention, have higher isolation, antenna has higher communication quality.
Accompanying drawing explanation
Fig. 1 be can hoisting isolation degree between close range antenna in an embodiment of the present invention antenna structure view.
Fig. 2 is the return loss schematic diagram of the antenna structure shown in Fig. 1.
Main element symbol description
| |
100 |
| |
10 |
| The |
21 |
| The |
211 |
| The |
212 |
| The |
22 |
| The |
221 |
| The |
222 |
| |
30 |
| The |
40 |
| Curved |
41 |
| Bar shaped |
42 |
| The |
50 |
Following embodiment further illustrates the present invention in connection with above-mentioned accompanying drawing.
Embodiment
Below in conjunction with accompanying drawing, in the present invention can hoisting isolation degree between close range antenna antenna structure be described in further detail.
Please refer to Fig. 1, in the present invention's one preferred embodiments can hoisting isolation degree between close range antenna antenna structure 100 comprise substrate 10, the first antenna 21, the second electric wire 22, ground plane 30, the first isolation channel 40 and the second isolation channel 50.
This substrate 10 is square non-metal board.This first antenna 21 and the second antenna 22 are for radiated electromagnetic wave, and the first antenna 21 and the second antenna 22 are arranged at respectively on two angles that this square substrate 10 is adjacent.In the present embodiment, this first antenna and this second antenna are U-shaped structure, the opening of this first antenna 21 is towards this second antenna 22, and the opening direction of the opening direction of this second antenna 22 and this first antenna 21 is perpendicular, and deviates from the direction of the substrate edges at the second antenna 22 places.In other embodiments, this first antenna 21 can be also other shapes with this second antenna 22.
This ground plane 30 is printed on this substrate 10 except this first antenna 21 and the region of this second antenna 22.This first antenna 21 is connected with this ground plane 30 by the first earth point 211, and is connected with substrate 10 by the first load point 212.This second antenna 22 is connected with this ground plane 30 by the second earth point 221, and is connected with substrate 10 by the second load point 222.
This first isolation channel 40 is located on this ground plane 30, between this first antenna 21 and the second antenna 22.This first isolation channel 40 comprises a curved portions 41 and a bar shaped portion 42, and this curved portions 41 is vertically connected at the end of this bar shaped portion 42, and this curved portions 41 roughly forms Y-shaped with this bar shaped portion 42.In the present embodiment, the length of this curved portions 41 equals the electromagnetic wave quarter-wave that this antenna structure 100 transmits and receives.This first isolation channel 40 is for increasing the isolation between this first antenna 21 and this second antenna 22, to reduce transmitting/receiving wireless signal phase mutual interference between the first antenna 21 and the second antenna 22.Be understandable that, in the present embodiment, it is best that the length of this curved portions 41 equals four of electromagnetic wavelength/a period of time isolation effect, in other embodiments, the length of this curved portions 41 can make the appropriate adjustments, as long as the first antenna 21 and the second antenna 22 can be isolated.In addition, in the present embodiment, this curved portions 41 and the vertical just preferably execution mode of one that is connected of this bar shaped portion 42, the isolation effect now reaching is best, and in other embodiments, this curved portions 41 also can out of plumb be connected with this bar shaped portion 42.
This second isolation channel 50 is located on this ground plane 30, between this first isolation channel 40 and the second antenna 22.This second isolation channel 50 is list structure, and this second isolation channel 50 parallels with the bar shaped portion 42 of this first isolation channel 40.In the present embodiment, the length of this second isolation channel 50 equates with the height of the Y-shaped that this first isolation channel 40 forms, and wherein, the height of this first isolation channel 40 refers to the distance between A point and B point in Fig. 1.This second isolation channel 50 influences each other for reducing electric current between this first isolation channel 40 and the second antenna 22, makes the impedance matching of this second antenna 22 better.Be understandable that, the length of this second isolation channel 50 equates just preferably execution mode of one with the height of the first isolation channel 40, in other embodiments, the length of this second isolation channel 50 also can be greater than the height of this first isolation channel 40, and the shape of this second isolation channel 50 is not only limited to bar shaped yet, also can be other shapes, as long as the second isolation channel 50 can be isolated this first isolation channel 40 and the second antenna 22.
Fig. 2 is return loss and the isolation view resolution chart of antenna structure 100 that can hoisting isolation degree between close range antenna in the present invention.As shown in Figure 2, in the time that frequency is 2.4GHz, be about-15dB of the return loss of this first antenna 21, be about-25dB of the return loss of this second antenna 22, the be about-37dB of isolation between this first antenna 21 and this second antenna 22.Isolation between double antenna in can the antenna structure of hoisting isolation degree between close range antenna in the present invention is high, and antenna has higher communication quality.
Claims (6)
1. one kind can promote the closely antenna structure of isolation between antennas, this antenna structure comprises: substrate, be arranged at the first antenna and the second antenna on substrate, one ground plane is printed on the position except this first antenna and this second antenna on this substrate, it is characterized in that, this antenna structure also comprises:
The first isolation channel, this first isolation channel is located on this ground plane, and between the first antenna and the second antenna, this first isolation channel comprises a curved portions and a bar shaped portion, and this curved portions is connected in the end of this bar shaped portion; And
The second isolation channel, this second isolation channel is located on this ground plane, between this first isolation channel and the second antenna.
2. the closely antenna structure of isolation between antennas that promotes as claimed in claim 1, is characterized in that, this curved portions is vertically connected at the end of this bar shaped portion.
3. the closely antenna structure of isolation between antennas that promotes as claimed in claim 1, is characterized in that, the length of this curved portions equals the electromagnetic wave quarter-wave that this antenna structure transmits and receives.
4. the closely antenna structure of isolation between antennas that promotes as claimed in claim 1, is characterized in that, this second isolation channel is list structure.
5. the closely antenna structure of isolation between antennas that promotes as claimed in claim 3, is characterized in that, the length of this second isolation channel equates with the height that this first isolation channel forms.
6. the closely antenna structure of isolation between antennas that promotes as claimed in claim 1, it is characterized in that, this first antenna and this second antenna are all U-shaped structure, the opening of this first antenna is towards this second antenna, the opening direction of the opening direction of this second antenna and this first antenna is perpendicular, and deviates from the direction of the substrate edges at the second antenna place.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210530514.9A CN103872455B (en) | 2012-12-11 | 2012-12-11 | Can the antenna structure of hoisting isolation degree between close range antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210530514.9A CN103872455B (en) | 2012-12-11 | 2012-12-11 | Can the antenna structure of hoisting isolation degree between close range antenna |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103872455A true CN103872455A (en) | 2014-06-18 |
| CN103872455B CN103872455B (en) | 2016-12-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210530514.9A Active CN103872455B (en) | 2012-12-11 | 2012-12-11 | Can the antenna structure of hoisting isolation degree between close range antenna |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106848584A (en) * | 2017-01-20 | 2017-06-13 | 青岛海信移动通信技术股份有限公司 | A kind of mimo antenna |
| CN107026671A (en) * | 2016-02-01 | 2017-08-08 | 北京小米移动软件有限公司 | isolation control circuit, method and mobile terminal |
| TWI606639B (en) * | 2015-10-15 | 2017-11-21 | 華碩電腦股份有限公司 | Antenna module |
| WO2018119931A1 (en) * | 2016-12-29 | 2018-07-05 | 深圳天珑无线科技有限公司 | Reconfigurable multi-input multi-output antenna and mobile terminal |
| US10177441B2 (en) | 2015-10-15 | 2019-01-08 | Asustek Computer Inc. | Antenna module |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2230717A1 (en) * | 2009-03-17 | 2010-09-22 | Research In Motion Limited | Wideband, high isolation two port antenna array for multiple input, multiple output handheld devices |
| CN102544705A (en) * | 2010-11-23 | 2012-07-04 | 株式会社Mobitech | MIMO antenna having plurality of isolation adjustment portions |
| CN102623793A (en) * | 2011-02-01 | 2012-08-01 | 华硕电脑股份有限公司 | Multiple Input Output Antenna System |
| CN202513284U (en) * | 2012-01-18 | 2012-10-31 | 华南理工大学 | MIMO Antenna Using Broadband T-shaped Neutralization Line to Improve Isolation |
-
2012
- 2012-12-11 CN CN201210530514.9A patent/CN103872455B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2230717A1 (en) * | 2009-03-17 | 2010-09-22 | Research In Motion Limited | Wideband, high isolation two port antenna array for multiple input, multiple output handheld devices |
| CN102544705A (en) * | 2010-11-23 | 2012-07-04 | 株式会社Mobitech | MIMO antenna having plurality of isolation adjustment portions |
| CN102623793A (en) * | 2011-02-01 | 2012-08-01 | 华硕电脑股份有限公司 | Multiple Input Output Antenna System |
| CN202513284U (en) * | 2012-01-18 | 2012-10-31 | 华南理工大学 | MIMO Antenna Using Broadband T-shaped Neutralization Line to Improve Isolation |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI606639B (en) * | 2015-10-15 | 2017-11-21 | 華碩電腦股份有限公司 | Antenna module |
| US10177441B2 (en) | 2015-10-15 | 2019-01-08 | Asustek Computer Inc. | Antenna module |
| CN107026671A (en) * | 2016-02-01 | 2017-08-08 | 北京小米移动软件有限公司 | isolation control circuit, method and mobile terminal |
| WO2018119931A1 (en) * | 2016-12-29 | 2018-07-05 | 深圳天珑无线科技有限公司 | Reconfigurable multi-input multi-output antenna and mobile terminal |
| CN106848584A (en) * | 2017-01-20 | 2017-06-13 | 青岛海信移动通信技术股份有限公司 | A kind of mimo antenna |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103872455B (en) | 2016-12-21 |
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