CN113067149A - Multiband 5G antenna unit and 5G antenna - Google Patents
Multiband 5G antenna unit and 5G antenna Download PDFInfo
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- CN113067149A CN113067149A CN202110340724.0A CN202110340724A CN113067149A CN 113067149 A CN113067149 A CN 113067149A CN 202110340724 A CN202110340724 A CN 202110340724A CN 113067149 A CN113067149 A CN 113067149A
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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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
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- 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
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- 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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Abstract
The invention discloses a multiband 5G antenna unit and a 5G antenna, wherein the multiband 5G antenna unit realizes multiband coverage of 5G through a first frequency band receiving unit and a second frequency band receiving unit, wherein the first frequency band receiving unit and the second frequency band receiving unit are jointly formed by a first connecting rod, a feeding rod and a metal frame positioned between the first connecting rod and the feeding rod; and the first adjusting unit formed by connecting the third connecting rod with the second matching network reduces mutual interference between the antennas and increases isolation on the one hand under the condition of not influencing the performance of the 5G antenna, and can adjust the overall frequency of the antenna to shorten the required length on the other hand, so that the antenna is smaller.
Description
Technical Field
The invention belongs to the technical field of 5G antennas, and particularly relates to a multiband 5G antenna unit and a 5G antenna.
Background
5G (5th Generation, fifth Generation mobile communication) technology is the most popular topic in the current technology industry, and the development of the 5G technology will bring huge changes to the society. The 5G technology has three characteristics, including large bandwidth, high reliability, low time delay and large-scale connection. The characteristic of large bandwidth can bring faster data transmission rate, and greatly improve the user internet experience; the characteristics of high reliability and low time delay bring possibility for the realization of technologies such as remote medical treatment, automatic driving and the like; the characteristic of large-scale connection brings possibility for realizing Internet of vehicles, industrial Internet and the like.
5G technology requires more antennas to transmit and receive wireless signals in order to achieve faster transmission rate, and the terminal requires at least 4 antennas supporting 5G frequency bands. Due to the increase of the number of antennas and coexistence in the same environment, the antennas are easy to interfere with each other due to poor isolation control. Therefore, it is becoming more and more important to improve the isolation performance of the antennas in a multi-antenna environment and further avoid mutual interference between the antennas.
Disclosure of Invention
The invention aims to provide a multiband 5G antenna unit and a 5G antenna, which realize the multiband coverage of domestic 5G and the miniaturization of the antenna, reduce the mutual interference among the antennas and increase the isolation when the antenna can be kept at a close distance.
In order to solve the problems, the technical scheme of the invention is as follows:
a multi-band 5G antenna unit comprising: the device comprises a feed branch, a first connecting branch, a second connecting branch, a third connecting branch, a first matching network and a second matching network;
the first connecting branch, the feeding branch, the second connecting branch and the third connecting branch are electrically connected with a metal frame of the 5G antenna in sequence, and the other end of the first connecting branch is electrically connected with a device main ground; the first connecting branch is used as a ground branch knot of the 5G antenna unit;
the first connecting branch, the feeding branch and a metal frame positioned between the first connecting branch and the feeding branch jointly form a first frequency band receiving unit;
the second connecting branch is connected with the first matching network to form a second frequency band receiving unit;
and the third connecting rod is connected with the second matching network to form a first adjusting unit for reducing mutual interference between the antennas and increasing the isolation.
According to an embodiment of the present invention, a frequency receiving range of the first frequency band receiving unit is 2.5GHz to 2.7 GHz.
According to an embodiment of the present invention, the frequency receiving ranges of the second frequency band receiving unit are 3.3GHz to 3.8GHz and 4.8GHz to 5.0 GHz.
According to an embodiment of the present invention, the first matching network in the second frequency band receiving unit includes an SPST switch and a capacitor, and after the SPST switch is connected in parallel with the capacitor, one end of the SPST switch is connected to the second connecting branch, and the other end of the SPST switch is connected to a device main ground;
when the SPST switch is switched on, the frequency receiving range of the second frequency band receiving unit is 4.8 GHz-5.0 GHz;
and when the SPST switch is switched off, the frequency receiving range of the second frequency band receiving unit is 3.3 GHz-3.8 GHz.
According to an embodiment of the invention, the value of the capacitance is less than 2 PF.
According to an embodiment of the present invention, the second matching network includes an adjusting capacitor, one end of the adjusting capacitor is connected to the third connecting branch, and the other end of the adjusting capacitor is connected to the device main ground; and adjusting the electric length of the antenna unit or changing the current direction by adjusting the size of the adjusting capacitor, so that the isolation is increased.
According to an embodiment of the invention, the value of the regulating capacitance is less than 10 PF.
According to an embodiment of the present invention, the multiband 5G antenna unit further includes a fourth connection branch and a third matching network, one end of the fourth connection branch is connected to the metal frame, and the other end of the fourth connection branch is connected to the third matching network, so as to form a second adjusting unit.
A5G antenna is characterized by comprising a metal frame and four multiband 5G antenna units in one embodiment of the invention;
the four multiband 5G antenna units are arranged on the metal frame respectively.
According to an embodiment of the invention, the metal frame comprises a first arc section, a straight section and a second arc section, and gaps are respectively arranged between the first arc section and the straight section and between the straight section and the second arc section;
the multiband 5G antenna is characterized in that a multiband 5G antenna unit is arranged on the first circular arc section, two isolated multiband 5G antenna units are arranged on the straight line section, and a multiband 5G antenna unit is arranged on the second circular arc section.
Due to the adoption of the technical scheme, compared with the prior art, the invention has the following advantages and positive effects:
in the multiband 5G antenna unit in one embodiment of the invention, the multiband coverage of 5G is realized through the first frequency band receiving unit and the second frequency band receiving unit, wherein the first frequency band receiving unit and the second frequency band receiving unit are formed by jointly connecting the first connecting branch, the feeding branch and the metal frame positioned between the first connecting branch and the feeding branch; and the first adjusting unit formed by connecting the third connecting rod with the second matching network reduces mutual interference between the antennas and increases isolation on the one hand under the condition of not influencing the performance of the 5G antenna, and can adjust the overall frequency of the antenna to shorten the required length on the other hand, so that the antenna is smaller.
Drawings
Fig. 1 is a schematic diagram of a multiband 5G antenna unit according to an embodiment of the invention;
FIG. 2 is a diagram illustrating a first matching network in accordance with an embodiment of the present invention;
FIG. 3 is a diagram illustrating a second matching network in accordance with an embodiment of the present invention;
fig. 4 is a schematic diagram of a 5G antenna according to an embodiment of the invention.
Description of reference numerals:
10: a metal frame; 20: a first graft; 21: second grafting; 22: feeding point continuous grafting; 23: third grafting; 24: fourth grafting; 31: a first matching network; 311: a capacitor; 312: an SPST switch; 32: an antenna feed point; 33: a second matching network; 331: adjusting the capacitance; 34: a third matching network; 40: a gap; 51: a first 5G antenna unit; 52: a second 5G antenna unit; 53: a third 5G antenna unit; 54: a fourth 5G antenna element; 61: a first further antenna element; 62: a second further antenna element.
Detailed Description
The multi-band 5G antenna unit and the 5G antenna according to the present invention will be described in detail with reference to the accompanying drawings and specific embodiments. Advantages and features of the present invention will become apparent from the following description and from the claims.
The embodiment provides a multiband 5G antenna unit aiming at the problem of how to improve the isolation of antennas in a multi-antenna environment, and the multiband 5G antenna unit can reduce mutual interference among the antennas and increase isolation when the antennas keep a short distance while realizing the multiband coverage and the miniaturization of the antennas in China.
Specifically, referring to fig. 1, the multiband 5G antenna unit includes: the antenna comprises a feeding branch, a first connecting branch 20, a second connecting branch 21, a third connecting branch 23, a first matching network 31 and a second matching network 33, wherein the first connecting branch 20, the feeding branch, the second connecting branch 21 and the third connecting branch 23 are electrically connected with a metal frame 10 of the 5G antenna in sequence (from left to right in the view of fig. 1), and the other end of the first connecting branch 20 is electrically connected with a device main ground 11. The first connecting branch 20 is used as a ground branch of the 5G antenna unit and also used as an isolation ground of other antenna units. Wherein, the feed branch is formed by connecting the feed point connecting branch 22 and the antenna feed point 32.
The first connecting branch 20, the feeding branch and the metal frame 10 between the first connecting branch 20 and the feeding branch jointly form a first frequency band receiving unit, and the frequency receiving range of the first frequency band receiving unit is 2.5 GHz-2.7 GHz.
The second connection branch 21 is connected with the first matching network 31 to form a second frequency band receiving unit, and the frequency receiving range of the second frequency band receiving unit is 3.3 GHz-3.8 GHz and 4.8 GHz-5.0 GHz. In a specific case, as shown in fig. 2, the first matching network 31 includes an SPST switch 312 and a capacitor 311, the SPST switch 312 and the capacitor 311 are connected in parallel to form a component, one end of the component is connected to the second connection terminal 21, and the other end is connected to the device main ground 11. When the SPST switch 312 is turned on, the frequency receiving range of the second band receiving unit is 4.8GHz to 5.0 GHz; when the SPST switch 312 is turned off, it is recommended to use a capacitor 311 with a frequency of 2PF or less for adjustment, so that the frequency receiving range of the second band receiving unit is 3.3GHz to 3.8 GHz.
The third connecting rod 23 is connected with the second matching network 33 to form a first adjusting unit, which is used for reducing mutual interference between the antennas and increasing isolation. The second matching network 33 includes a tuning capacitor 331, and referring to fig. 3, one end of the tuning capacitor 331 is connected to the third connecting terminal 23, and the other end thereof is connected to the device main ground 11. By adjusting the value of the adjusting capacitor 331, the antenna end is grounded or disconnected (it should be noted that only the antenna end is grounded, and the antenna performance is affected if the antenna end is completely grounded), so that the electrical length is changed, and the antenna length can be changed to achieve the purpose of reducing the antenna. In addition, the current direction can be changed by adjusting the value of the adjusting capacitor 331, and the influence of the current of the antenna on other antennas is reduced. The value of the tuning capacitance is recommended to be less than 10 PF.
As shown in fig. 1, the multiband 5G antenna unit further includes a fourth connecting branch 24 and a third matching network 34, wherein one end of the fourth connecting branch 24 is connected to the metal frame 10, and the other end of the fourth connecting branch 24 is connected to the third matching network 34 to form a second adjusting unit. The structure and principle of the second adjusting unit are the same as those of the first adjusting unit, and the second adjusting unit can be added or deleted according to actual needs, or can be installed on other antennas.
In the 5G technology, in order to achieve a faster transmission rate, more antennas are required to transmit and receive wireless signals, and a device terminal needs at least 4 antennas supporting a 5G frequency band. Please refer to fig. 4 for a 5G antenna composed of the multiband 5G antenna unit. The 5G antenna includes a metal frame 10, a first 5G antenna unit 501, a second 5G antenna unit 502, a third 5G antenna unit 503, a fourth 5G antenna unit 504, a first other antenna unit 601 and a second other antenna unit 602, which are respectively disposed on the metal frame 10.
The metal frame 10 comprises a first circular arc section, a straight line section and a second circular arc section, and gaps 40 are respectively arranged between the first circular arc section and the straight line section and between the straight line section and the second circular arc section; the first arc segment is provided with a first 5G antenna unit 501 and a first other antenna unit 601, the straight line segment is provided with a second 5G antenna unit 502 and a third 5G antenna unit 503 which are isolated from each other, and the second arc segment is provided with a fourth 5G antenna unit 504 and a second other antenna unit 602.
The multiband 5G antenna unit provided by the invention realizes multiband coverage of 5G by a first frequency band receiving unit and a second frequency band receiving unit, wherein the first frequency band receiving unit and the second frequency band receiving unit are jointly formed by a first connecting branch 20, a feeding branch and a metal frame 10 positioned between the first connecting branch 20 and the feeding branch, and the second frequency band receiving unit is formed by connecting a second connecting branch 21 and a first matching network 31; and, through the first adjusting unit formed by connecting the third connecting rod 23 and the second matching network 33, on one hand, under the condition of not influencing the performance of the 5G antenna, the mutual interference between the antennas is reduced, the isolation is increased, on the other hand, the whole frequency of the antenna can be adjusted, the required length is shortened, and the antenna is smaller. The 5G antenna composed of a plurality of multiband 5G antenna units can realize the full coverage of domestic 5G frequency bands and the miniaturization of the antenna, and when the distance between the antennas is kept short, the mutual interference between the antennas is reduced, and the isolation is increased.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments. Even if various changes are made to the present invention, it is still within the scope of the present invention if they fall within the scope of the claims of the present invention and their equivalents.
Claims (10)
1. A multi-band 5G antenna unit, comprising: the device comprises a feed branch, a first connecting branch, a second connecting branch, a third connecting branch, a first matching network and a second matching network;
the first connecting branch, the feeding branch, the second connecting branch and the third connecting branch are electrically connected with the metal frame in sequence, and the other end of the first connecting branch is mainly electrically connected with equipment; the first connecting branch is used as a ground branch knot of the 5G antenna unit;
the first connecting branch, the feeding branch and a metal frame positioned between the first connecting branch and the feeding branch jointly form a first frequency band receiving unit;
the second connecting branch is connected with the first matching network to form a second frequency band receiving unit;
and the third connecting rod is connected with the second matching network to form a first adjusting unit for reducing mutual interference between the antennas and increasing the isolation.
2. The multiband 5G antenna unit of claim 1, wherein the first band receiving unit has a frequency reception range of 2.5GHz to 2.7 GHz.
3. The multiband 5G antenna unit of claim 1, wherein the second band receiving unit has frequency reception ranges of 3.3GHz to 3.8GHz and 4.8GHz to 5.0 GHz.
4. The multiband 5G antenna unit of claim 3, wherein the first matching network in the second band receiving unit comprises an SPST switch and a capacitor, the SPST switch being connected in parallel with the capacitor, one end of the SPST switch being connected to the second connecting branch, the other end of the SPST switch being connected to a device main ground;
when the SPST switch is switched on, the frequency receiving range of the second frequency band receiving unit is 4.8 GHz-5.0 GHz;
and when the SPST switch is switched off, the frequency receiving range of the second frequency band receiving unit is 3.3 GHz-3.8 GHz.
5. A multiband 5G antenna element according to claim 4, characterized in that said capacitance has a value less than 2 PF.
6. The multiband 5G antenna unit of claim 1, wherein the second matching network comprises a tuning capacitor, one end of the tuning capacitor being connected to the third connecting branch, the other end of the tuning capacitor being connected to a device main ground; and adjusting the electric length of the antenna unit or changing the current direction by adjusting the size of the adjusting capacitor, so that the isolation is increased.
7. The multiband 5G antenna unit of claim 6, wherein the tuning capacitance has a value of less than 10 PF.
8. The multiband 5G antenna unit of claim 1, further comprising a fourth link and a third matching network, wherein one end of the fourth link is connected to a metal frame, and the other end of the fourth link is connected to the third matching network to form a second adjusting unit.
9. A 5G antenna comprising a metal bezel, four multiband 5G antenna elements according to any one of claims 1 to 6;
the four multiband 5G antenna units are arranged on the metal frame respectively.
10. The 5G antenna of claim 9, wherein the metal bezel comprises a first arc segment, a straight segment, and a second arc segment, and a gap exists between the first arc segment and the straight segment, and between the straight segment and the second arc segment;
the multiband 5G antenna is characterized in that a multiband 5G antenna unit is arranged on the first circular arc section, two isolated multiband 5G antenna units are arranged on the straight line section, and a multiband 5G antenna unit is arranged on the second circular arc section.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2021103143261 | 2021-03-24 | ||
| CN202110314326 | 2021-03-24 |
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| Publication Number | Publication Date |
|---|---|
| CN113067149A true CN113067149A (en) | 2021-07-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110340724.0A Pending CN113067149A (en) | 2021-03-24 | 2021-03-30 | Multiband 5G antenna unit and 5G antenna |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140370825A1 (en) * | 2011-12-29 | 2014-12-18 | Jh Basic Holdings Co., Ltd. | Multiband antenna apparatus |
| CN106571523A (en) * | 2016-10-20 | 2017-04-19 | 杭州电子科技大学 | Terminal multiple-input-multiple-output high-isolation adjustable antenna |
| CN107546472A (en) * | 2017-08-02 | 2018-01-05 | 北京小米移动软件有限公司 | Multiband aerial and mobile terminal |
| CN109346833A (en) * | 2018-10-12 | 2019-02-15 | Oppo广东移动通信有限公司 | Terminal device with WIFI mimo antenna |
-
2021
- 2021-03-30 CN CN202110340724.0A patent/CN113067149A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140370825A1 (en) * | 2011-12-29 | 2014-12-18 | Jh Basic Holdings Co., Ltd. | Multiband antenna apparatus |
| CN106571523A (en) * | 2016-10-20 | 2017-04-19 | 杭州电子科技大学 | Terminal multiple-input-multiple-output high-isolation adjustable antenna |
| CN107546472A (en) * | 2017-08-02 | 2018-01-05 | 北京小米移动软件有限公司 | Multiband aerial and mobile terminal |
| CN109346833A (en) * | 2018-10-12 | 2019-02-15 | Oppo广东移动通信有限公司 | Terminal device with WIFI mimo antenna |
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Application publication date: 20210702 |
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