CN109449595B - MIMO antenna - Google Patents
MIMO antenna Download PDFInfo
- Publication number
- CN109449595B CN109449595B CN201811478397.XA CN201811478397A CN109449595B CN 109449595 B CN109449595 B CN 109449595B CN 201811478397 A CN201811478397 A CN 201811478397A CN 109449595 B CN109449595 B CN 109449595B
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- antenna
- diversity
- feed point
- gps
- wifi
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- 239000002184 metal Substances 0.000 claims abstract description 37
- 238000002955 isolation Methods 0.000 claims abstract description 25
- 230000008878 coupling Effects 0.000 abstract description 5
- 238000010168 coupling process Methods 0.000 abstract description 5
- 238000005859 coupling reaction Methods 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000001808 coupling effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000002474 experimental 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
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/52—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
- H01Q1/521—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure reducing the coupling between adjacent antennas
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
- H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
- H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
- H01Q1/242—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/44—Details of, or arrangements associated with, antennas using equipment having another main function to serve additionally as an antenna, e.g. means for giving an antenna an aesthetic aspect
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/48—Earthing means; Earth screens; Counterpoises
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/10—Resonant antennas
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/20—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements characterised by the operating wavebands
- H01Q5/28—Arrangements for establishing polarisation or beam width over two or more different wavebands
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/30—Arrangements for providing operation on different wavebands
- H01Q5/307—Individual or coupled radiating elements, each element being fed in an unspecified way
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/30—Arrangements for providing operation on different wavebands
- H01Q5/307—Individual or coupled radiating elements, each element being fed in an unspecified way
- H01Q5/314—Individual or coupled radiating elements, each element being fed in an unspecified way using frequency dependent circuits or components, e.g. trap circuits or capacitors
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
The invention discloses a MIMO antenna, which comprises a diversity antenna, a GPS and a WIFI antenna, wherein the diversity antenna, the GPS and the WIFI antenna are arranged on the back of a metal frame, a first gap and a second gap are arranged at the upper parts of a left frame and a right frame of the metal frame, the GPS and the WIFI antenna are arranged at the left upper corner position of the metal frame which is deviated to the first gap, a PCB board is arranged on the inner side of the back of the metal frame, a first isolation adjustment feed point and a second isolation adjustment feed point are arranged on the PCB board between the GPS and the WIFI antenna and the diversity antenna, and the first isolation adjustment feed point and the second isolation adjustment feed point are respectively electrically connected with the diversity antenna, the GPS and the WIFI antenna; by using the metal structure as the antenna, the antenna area is reduced, different frequency bands required by the antenna are met, and the mutual coupling of the antennas and the efficiency of the antennas are improved by reasonable antenna layout and changing the form of adjacent antennas.
Description
Technical Field
The invention belongs to the technical field of antennas, and particularly relates to a MIMO antenna.
Background
With the rapid development of communication technology, users put higher demands on the performance of mobile communication systems, and continually seek the miniaturization and portability of mobile devices; multiple-input multiple-output MIMO antennas have become the best choice for wireless communications. However, because the space of the mobile phone is smaller, unavoidable coupling effect exists between antenna units, and the advantage of the MIMO antenna in the channel capacity is weakened.
The existing improvement technology is to slot the metal frame, increase the number of antennas or increase the bandwidth by multi-switch tuning; these two improvements are greatly affected by the frame structure limitations, and the coupling between multiple antennas affects the antenna performance; and the antenna gap inside the mobile phone is narrower, the feed point and the switch position are limited, and meanwhile, the switch has loss and is difficult to tune.
In view of the design of an antenna, there is a need for a MIMO antenna with small antenna area, wide band coverage, improved mutual coupling and improved antenna efficiency.
Disclosure of Invention
The invention aims to provide a MIMO antenna, which is properly slotted by using a metal structure as an antenna, meets different frequency bands required by the antenna, and reduces the area of the antenna at the same time; through reasonable antenna layout, the form of adjacent antennas is changed, the mutual coupling of the antennas is improved, and the antenna efficiency is improved, so that the problems in the background technology are solved.
In order to achieve the above purpose, the present invention provides the following technical solutions: the MIMO antenna comprises a diversity antenna, a GPS and a WIFI antenna, wherein the diversity antenna, the GPS and the WIFI antenna are arranged on the back surface of a metal frame, a first gap and a second gap are arranged on the upper parts of a left frame and a right frame of the metal frame, the diversity antenna is arranged on the top frame of the metal frame which is deviated from the second gap, the GPS and the WIFI antenna are arranged at the left upper corner position of the metal frame which is deviated from the first gap, a PCB board is arranged on the inner side of the back surface of the metal frame, a first isolation adjustment feed point and a second isolation adjustment feed point are arranged on the PCB board between the GPS and the WIFI antenna and the diversity antenna, and the first isolation adjustment feed point and the second isolation adjustment feed point are respectively electrically connected with the diversity antenna, the GPS and the WIFI antenna;
the PCB on one side of the diversity antenna is provided with a diversity antenna feed point and a switch pin, the PCB on one side of the GPS and the WIFI antenna is provided with a GPS and WIFI antenna feed point and a GPS and WIFI antenna feed point, the diversity antenna is respectively and electrically connected with the diversity antenna feed point and the switch pin on the metal frame and the PCB, and the GPS and the WIFI antenna is respectively and electrically connected with the GPS and WIFI antenna feed point and the GPS and WIFI antenna feed point on the metal frame and the PCB;
the diversity antenna comprises a diversity high-frequency MIMO antenna and a diversity medium-high-frequency MIMO antenna, the diversity high-frequency MIMO antenna and the diversity medium-high-frequency MIMO antenna are respectively arranged on the metal frame at the lower parts of the first slot and the second slot, the diversity high-frequency MIMO antenna and the diversity medium-high-frequency MIMO antenna are respectively electrically connected with the switch pin, one side of the PCB board, which is close to the diversity high-frequency MIMO antenna, is provided with a diversity high-frequency MIMO antenna feed point and a diversity high-frequency MIMO antenna feed point, one side of the PCB board, which is close to the diversity medium-high-frequency MIMO antenna, is provided with a diversity medium-high-frequency MIMO antenna feed point and a diversity medium-high-frequency MIMO antenna feed point, and the diversity medium-high-frequency MIMO antenna feed point are respectively electrically connected with the metal frame and the diversity medium-high-frequency MIMO antenna feed point on the PCB board.
Preferably, the diversity high-frequency MIMO antenna and the diversity medium-high-frequency MIMO antenna are in LOOP form, and the GPS and WIFI antenna and the diversity antenna are in IFA form.
Compared with the prior art, the invention has the beneficial effects that:
1. by using the metal structure as the antenna, the antenna area is reduced and different frequency bands required by the antenna are satisfied;
2. through reasonable antenna layout, change the form of adjacent antenna, improved the antenna mutual coupling and promoted antenna efficiency.
Drawings
FIG. 1 is a schematic back view of the present invention;
FIG. 2 is a schematic view of the back structure of the present invention;
fig. 3 is a diagram S11 of a diversity high frequency MIMO antenna of the present invention;
FIG. 4 is a diagram S11 of the GPS and WIFI antenna of the present invention;
fig. 5 is an S11 diagram of a high frequency MIMO antenna in the diversity of the present invention.
In the figure: 100. diversity antennas; 110. diversity high frequency MIMO antennas; 120. diversity high frequency MIMO antennas; 200. GPS and WIFI antenna; 300. a PCB board; 400. a metal frame; 1. diversity high frequency MIMO antenna feed points; 2. diversity high frequency MIMO antenna feed sites; 3. GPS and WIFI antenna feed point; 4. GPS and WIFI antenna feed points; 5. isolation adjustment feed point I; 6. isolation degree adjusting feed point II; 7. diversity antenna feed points; 8. a switch foot; 9. diversity high frequency MIMO antenna feed points; 10. diversity high frequency MIMO antenna feed locations; 11. a first gap; 12. and a second gap.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1 and 2, the present invention provides a technical solution: the MIMO antenna comprises a diversity antenna 100 and a GPS and WIFI antenna 200, wherein the diversity antenna 100 and the GPS and WIFI antenna 200 are arranged on the back surface of a metal frame 400, a first gap 11 and a second gap 12 are arranged on the upper parts of the left and right frames of the metal frame 400, the diversity antenna 100 is arranged on the top frame of the metal frame 400 which is deviated from the second gap 12, the GPS and WIFI antenna 200 is arranged at the left upper corner position of the metal frame 400 which is deviated from the first gap 11, a PCB 300 is arranged on the inner side of the back surface of the metal frame 400, a first isolation adjustment feed point 5 and a second isolation adjustment feed point 6 are arranged on the PCB between the GPS and WIFI antenna 200 and the diversity antenna 100, and the first isolation adjustment feed point 5 and the second isolation adjustment feed point 6 are respectively electrically connected with the diversity antenna 100 and the GPS and the WIFI antenna 200;
a diversity antenna feed point 7 and a switch pin 8 are arranged on the PCB 300 at one side of the diversity antenna 100, a GPS and WIFI antenna feed point 3 and a GPS and WIFI antenna feed point 4 are arranged on the PCB 300 at one side of the GPS and WIFI antenna 200, the diversity antenna 100 is respectively and electrically connected with the diversity antenna feed point 7 and the switch pin 8 on the metal frame 400 and the PCB 300, and the GPS and WIFI antenna 200 is respectively and electrically connected with the GPS and WIFI antenna feed point 3 and the GPS and WIFI antenna feed point 4 on the metal frame 400 and the PCB 300;
the diversity antenna 100 comprises a diversity high-frequency MIMO antenna 110 and a diversity medium-high-frequency MIMO antenna 120, the diversity high-frequency MIMO antenna 110 and the diversity medium-high-frequency MIMO antenna 120 are respectively arranged on a metal frame 400 at the lower parts of a first slot 11 and a second slot 12, the diversity high-frequency MIMO antenna 110 and the diversity medium-high-frequency MIMO antenna 120 are respectively electrically connected with a switch pin 8, one side of the PCB 300, which is close to the diversity high-frequency MIMO antenna 110, is provided with a diversity high-frequency MIMO antenna feed point 1 and a diversity high-frequency MIMO antenna feed point 2, one side of the PCB 300, which is close to the diversity medium-high-frequency MIMO antenna 120, is provided with a diversity medium-high-frequency MIMO antenna feed point 9 and a diversity medium-high-frequency MIMO antenna feed point 10, the diversity high-frequency MIMO antenna 110 is respectively electrically connected with the metal frame 400 and the diversity high-frequency MIMO antenna feed point 1 on the PCB 300, and the diversity medium-high-frequency MIMO antenna feed point 120 is respectively electrically connected with the metal frame 400 and the diversity medium-high-frequency MIMO antenna feed point 9 and the medium-high-frequency MIMO antenna feed point 10 on the PCB 300.
As shown in fig. 3, 4 and 5, the diversity high-frequency MIMO antenna 110 and the diversity medium-high-frequency MIMO antenna 120 are in LOOP form, and the GPS and WIFI antenna 200 and the diversity antenna 100 are in IFA form;
the isolation adjustment feed point one 5 and the isolation adjustment feed point two 6 can improve the isolation between the diversity antenna 100 and the GPS and WIFI antenna 200.
As shown in fig. 3, fig. 4 and fig. 5, the diversity high-frequency MIMO antenna feed point 1 is used as the center, the high-frequency resonance is generated through the slot one 11 and the diversity high-frequency MIMO antenna feed point 2, the diversity middle-high-frequency MIMO antenna feed point 9 is used as the center, the middle-high frequency resonance is generated through the slot two 12 and the diversity middle-high-frequency MIMO antenna feed point 10, the frequency band switching between the diversity high-frequency MIMO antenna 110 and the diversity middle-high-frequency MIMO antenna 120 can be completed through the switch pin 8, the GPS and WIFI antenna feed point 4 is used as the center, the frequency band meeting the GPS and WIFI requirements is generated through the GPS and WIFI antenna feed point 3 and the slot one 11, and the full coverage of the low, middle and high frequency bands is realized;
the isolation degree of the diversity antenna 100 and the isolation degree of the GPS and WIFI antenna 200 is adjusted and improved through the isolation degree adjustment feed point I5 and the isolation degree adjustment feed point II 6, and experimental requirements are met by the improved MIMO antenna through an S11 diagram of the diversity high-frequency MIMO antenna, an S11 diagram of the GPS and WIFI antenna and an S11 diagram of the diversity medium-high-frequency MIMO antenna obtained through experiments.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (2)
1. A MIMO antenna comprising diversity antennas (100) and GPS and WIFI antennas (200), characterized in that: the antenna comprises a diversity antenna (100) and a GPS and WIFI antenna (200), wherein the diversity antenna and the GPS and WIFI antenna (200) are arranged on the back of a metal frame (400), a first gap (11) and a second gap (12) are arranged on the upper parts of the left and right frames of the metal frame (400), the diversity antenna (100) is arranged on the top frame of the metal frame (400) which is deviated to the second gap (12), the GPS and the WIFI antenna (200) are arranged at the left upper corner position of the metal frame (400) which is deviated to the first gap (11), a PCB (300) is arranged on the inner side of the back of the metal frame (400), a first isolation adjustment feed point (5) and a second isolation adjustment feed point (6) are arranged on the PCB between the GPS and WIFI antenna (200) and the diversity antenna (100), and the first isolation adjustment feed point (5) and the second isolation adjustment feed point (6) are respectively electrically connected with the diversity antenna (100) and the GPS and the WIFI antenna (200).
A diversity antenna feed point (7) and a switch pin (8) are arranged on the PCB (300) at one side of the diversity antenna (100), a GPS and WIFI antenna feed point (3) and a GPS and WIFI antenna feed point (4) are arranged on the PCB (300) at one side of the GPS and WIFI antenna (200), the diversity antenna (100) is respectively and electrically connected with the metal frame (400) and the diversity antenna feed point (7) and the switch pin (8) on the PCB (300), and the GPS and WIFI antenna (200) is respectively and electrically connected with the GPS and WIFI antenna feed point (3) and the GPS and WIFI antenna feed point (4) on the metal frame (400) and the PCB (300);
the diversity antenna (100) comprises a diversity high-frequency MIMO antenna (110) and a diversity middle-high frequency MIMO antenna (120), the diversity high-frequency MIMO antenna (110) and the diversity middle-high frequency MIMO antenna (120) are respectively arranged on a metal frame (400) at the lower parts of a first slot (11) and a second slot (12), the diversity high-frequency MIMO antenna (110) and the diversity middle-high frequency MIMO antenna (120) are respectively electrically connected with a switch pin (8), one side of a PCB (300) close to the diversity high-frequency MIMO antenna (110) is provided with a diversity high-frequency MIMO antenna feed point (1) and a diversity high-frequency MIMO antenna feed point (2), one side of the PCB (300) close to the diversity middle-high frequency MIMO antenna (120) is provided with a diversity middle-high frequency MIMO antenna feed point (9) and a diversity middle-high frequency MIMO antenna feed point (10), the diversity high-frequency MIMO antenna (110) is respectively electrically connected with the metal frame (400) and the diversity high-frequency MIMO antenna feed point (1) on the PCB (300), and the diversity high-frequency MIMO antenna feed point (2) on the side of the PCB (300) is respectively connected with the diversity high-frequency MIMO antenna feed point (10).
2. A MIMO antenna according to claim 1 wherein: the diversity high-frequency MIMO antenna (110) and the diversity medium-high-frequency MIMO antenna (120) are in LOOP forms, and the GPS and WIFI antenna (200) and the diversity antenna (100) are in IFA forms.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811478397.XA CN109449595B (en) | 2018-12-05 | 2018-12-05 | MIMO antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811478397.XA CN109449595B (en) | 2018-12-05 | 2018-12-05 | MIMO antenna |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109449595A CN109449595A (en) | 2019-03-08 |
| CN109449595B true CN109449595B (en) | 2023-11-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811478397.XA Active CN109449595B (en) | 2018-12-05 | 2018-12-05 | MIMO antenna |
Country Status (1)
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| CN (1) | CN109449595B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110492237A (en) * | 2019-08-19 | 2019-11-22 | 深圳市信维通信股份有限公司 | Mimo antenna structure and mobile device based on metal edge frame |
| CN113161721B (en) * | 2020-01-22 | 2023-11-28 | 华为技术有限公司 | Antenna device and electronic equipment |
| CN111613876B (en) * | 2020-05-26 | 2023-04-07 | 捷开通讯(深圳)有限公司 | Antenna structure and mobile terminal thereof |
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| Publication number | Publication date |
|---|---|
| CN109449595A (en) | 2019-03-08 |
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