CN106972273B - Antenna and mobile terminal - Google Patents
Antenna and mobile terminal Download PDFInfo
- Publication number
- CN106972273B CN106972273B CN201710043034.2A CN201710043034A CN106972273B CN 106972273 B CN106972273 B CN 106972273B CN 201710043034 A CN201710043034 A CN 201710043034A CN 106972273 B CN106972273 B CN 106972273B
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- Prior art keywords
- antenna
- frame
- connecting body
- radiation part
- system ground
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- 230000005855 radiation Effects 0.000 claims abstract description 26
- 239000002184 metal Substances 0.000 claims abstract description 18
- 239000003990 capacitor Substances 0.000 claims description 3
- 238000004891 communication Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000000191 radiation effect Effects 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
Images
Classifications
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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
- H01Q5/335—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 at the feed, e.g. for impedance matching
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/48—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
- H01Q5/20—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
Abstract
The invention relates to the technical field of wireless communication, in particular to an antenna and a mobile terminal, wherein the antenna is provided with a feed point and comprises a circuit board, a metal frame, a tuning switch and a connecting structure; the circuit board has a system ground; the metal frame comprises a first frame and a second frame, the length of the first frame is smaller than that of the second frame, and the second frame is connected with the system ground; the connecting structure comprises a first connecting body, a second connecting body and a third connecting body, the tuning switch is connected with the first frame through the first connecting body, the first connecting body is connected with the feed point, the second connecting body is connected with the first frame, the second connecting body is connected with the feed point, and the third connecting body is connected between the second frame and the system ground; the first frame forms a low-frequency radiation part of the antenna, the first connector and the second connector form a medium-frequency radiation part of the antenna, the third connector forms a high-frequency radiation part of the antenna, and the tuning switch is used for adjusting the frequency of the low-frequency radiation part. The antenna has better performance.
Description
Technical Field
The invention relates to the technical field of wireless communication, in particular to an antenna and a mobile terminal.
Background
CA (carrier aggregation) is a technique introduced by the LTE-Advanced system to increase the transmission bandwidth of an antenna in order to meet the requirements of single-user peak rate and system capacity increase. Operators in different regions around the world have different LTE spectrum allocations, and therefore have different CA frequency band combination requirements.
In order to meet the frequency band combination requirements of different CAs, a mode that a tuning switch is directly connected with a metal frame is adopted in the traditional technology, and a tuning function is realized through the tuning switch. However, when the tuning switch is directly connected to the metal frame, poor contact is likely to occur, and the high frequency band of the antenna is also changed when the low frequency band of the antenna is adjusted, both of which may adversely affect the performance of the antenna.
Disclosure of Invention
The invention provides an antenna and a mobile terminal.
A first aspect of the present invention provides an antenna having a feed point and a feed point, the antenna comprising a circuit board, a metal frame, a tuning switch and a connection structure;
the circuit board has a system ground;
the metal frame comprises a first frame and two second frames, the first frame is positioned at the bottom of the metal frame, the two second frames are respectively arranged on two opposite sides of the first frame, the length of the first frame is smaller than that of the second frames, a clearance area is formed between the first frame and the system ground, the second frames are connected with the system ground, and a first broken joint and a second broken joint are respectively formed between two opposite ends of the first frame and the two second frames;
the tuning switch is connected with the first frame through the first connecting body, the first connecting body is connected with the feed point, the second connecting body is connected with the first frame, the second connecting body is connected with the feed point, and the third connecting body is connected between the second frame and the system ground;
the first frame forms a low-frequency radiation part of the antenna, the first connector and the second connector form a medium-frequency radiation part of the antenna, the third connector forms a high-frequency radiation part of the antenna, and the tuning switch is used for adjusting the frequency of the low-frequency radiation part.
Preferably, at least one of the first connector and the second connector is an FPC, an LDS molding structure, or a spring sheet.
Preferably, the second linker is an L-shaped structure.
Preferably, one end of the third connecting body is connected to a side of the system ground close to the feeding point, and the other end of the third connecting body is connected to a side of the second frame close to the feeding point.
Preferably, the connection position of the feeding point and the first frame is located on one side of the first frame close to the second broken seam.
Preferably, the tuning switch is an adjustable capacitor.
Preferably, the low frequency band of the antenna is 698-960 MHz, and the medium and high frequency band of the antenna is 1710-2690 MHz.
A second aspect of the invention provides a mobile terminal comprising an antenna as claimed in any preceding claim.
The technical scheme provided by the invention can achieve the following beneficial effects:
the antenna provided by the invention has the advantages that the tuning switch is connected to the feed point of the antenna through the first connecting body, so that the tuning switch is not directly connected with the metal frame, the problem of poor contact is not easy to occur, and meanwhile, the connection mode can ensure that the medium-high frequency band of the antenna is basically not changed when the low-frequency band of the antenna is adjusted. Therefore, the performance of the antenna is better.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention, as claimed.
Drawings
Fig. 1 is a schematic partial structure diagram of a mobile terminal according to an embodiment of the present invention;
FIG. 2 is an enlarged, fragmentary view of the structure shown in FIG. 1;
fig. 3 is a schematic structural diagram of an antenna according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of an antenna provided by an embodiment of the present invention;
fig. 5 is a schematic frequency band diagram of an antenna according to an embodiment of the present invention;
fig. 6 is a schematic diagram of frequency adjustment of an antenna according to an embodiment of the present invention;
fig. 7 is a schematic diagram of antenna efficiency of an antenna according to an embodiment of the present invention.
Reference numerals:
10-a feed-through location;
11-a feeding point;
12-a clean-out zone;
20-system ground;
21-a metal frame;
210-a second bezel;
211-a first rim;
212-first break;
213-second breaking;
22-a tuning switch;
23-a first linker;
24-a second linker;
25-a third linker.
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.
Detailed Description
The present invention will be described in further detail below with reference to specific embodiments and with reference to the attached drawings.
As shown in fig. 1 to 4, the embodiments of the present invention provide an antenna, which may be applied in a mobile terminal, particularly a portable mobile terminal, having a feeding point 10 and a feeding point 11, where specific positions of the feeding point 10 and the feeding point 11 may be obtained according to a test. This antenna may specifically include a circuit board, a metal bezel 21, a tuning switch 22 and a connection structure, the circuit board having a system ground 20.
The metal bezel 21 specifically refers to a ring-shaped middle frame portion of the mobile terminal, the metal bezel 21 includes a first bezel 211 located at the bottom and two second bezels 210 respectively disposed at two opposite sides of the first bezel 211, the length of the first bezel 211 is smaller than that of the second bezel 210, that is, the first bezel 211 is a short side portion in the metal bezel 21, and the second bezel 210 is a long side portion in the metal bezel 21. A first fracture 212 and a second fracture 213 are respectively formed between the two opposite ends of the first frame 211 and the two second frames 210. The first and second slots 212 and 213 are used to isolate energy output, thereby ensuring the radiation performance of the antenna. The first frame 211 forms a clearance area 12 with the system ground 20, and the second frame 210 is connected with the system ground 20.
The connection structure may specifically include a first connection body 23, a second connection body 24, and a third connection body 25, the tuning switch 22 is connected to the first frame 211 through the first connection body 23, the first connection body 23 is connected to the feeding point 10, the second connection body 24 is connected to the first frame 211, the second connection body 24 is connected to the feeding point 11, and the third connection body 25 is connected between the second frame 210 and the system ground 20.
The first frame 211 forms a low-frequency radiation portion of the antenna, and the first connecting body 23 and the second connecting body 24 form an intermediate-frequency radiation portion of the antenna, in which the radiation effect of the second connecting body 24 is stronger than that of the first connecting body 23. The third connecting body 25 forms a high-frequency radiating portion of the antenna.
As shown in fig. 4, the antenna substantially forms three radiation portions, which are denoted by a, b, and c, wherein a denotes a low frequency radiation portion, b denotes a medium frequency radiation portion, and c denotes a high frequency radiation portion, and the frequency band ranges of the three radiation portions are respectively the frequency band ranges denoted by a, b, and c in fig. 5. Preferably, the low-frequency band of the antenna is 698-960 MHz, and the medium-high frequency band is 1710-2690 MHz. It should be noted that the operating frequency band of the antenna has a relatively concentrated frequency band range, and a lower frequency part of the frequency band ranges is referred to as a low frequency band, and a higher frequency part of the frequency band ranges is referred to as a medium-high frequency band (the medium-high frequency band may also be referred to as a medium frequency band and a high frequency band separately, and the frequency of the high frequency band is higher than the frequency of the medium frequency band).
The tuning switch 22 may be a dynamically adjustable capacitor, an adjustable inductor or an adjustable resistor, and the frequency adjustment of the antenna is realized by adjusting a capacitance value, an inductance value or a resistance value, and more specifically, the tuning switch 22 mainly adjusts the frequency of the aforementioned low-frequency radiation part, and the adjustment process has no obvious effect on the medium-frequency radiation part and the high-frequency radiation part. Referring to fig. 6, tuning switch 22 may specifically tune the S11 waveform.
The antenna provided by the embodiment of the invention connects the tuning switch 22 to the feed point 10 of the antenna through the first connecting body 23, so that the tuning switch 22 is not directly connected with the metal frame 21, and the problem of poor contact is not easy to occur. Therefore, the performance of the antenna is better.
In addition, by changing the length and width of the first connecting body 23, the frequency adjusting range and the switching state of the tuning switch 22 can be changed, thereby reducing the debugging difficulty of the antenna.
At least one of the first connector 23 and the second connector 24 may be a Flexible Printed Circuit (FPC), or a Laser Direct Structuring (LDS) molded structure, that is, an LDS molded structure, or an elastic sheet, where the specific structure of the elastic sheet may refer to the prior art. Of course, the first connecting body 23 and the second connecting body 24 may have other structures than the aforementioned structures.
Further, one end of the third connecting body 25 is connected to the system ground 20 on the side close to the feeding point 11, and the other end is connected to the second frame 210 on the side close to the feeding point 11. This arrangement makes it possible to make the distance between the third connection body 25 and the feed point 11 relatively smaller, facilitating the third connection body 25 to function as a radiator. The third connector 25 may be an FPC, an LDS molding structure, or a spring sheet.
The shapes of the first connecting body 23, the second connecting body 24 and the third connecting body 25 can be flexibly selected according to actual requirements, for example, the three can adopt a linear structure or a bent structure. Alternatively, the first connector 23 and the second connector 24 may both have an L-shaped structure, and the third connector 25 may have a linear structure, so as to optimize the radiation intensity of the three, and fully utilize the space inside the mobile terminal.
For the connection position between the feeding point 11 and the first frame 211, the embodiment of the present invention is preferably located on the side of the first frame 211 close to the second slit 213. The arrangement makes the connection position of the feeding point 11 and the first frame 211 have a relatively obvious bias, so that the low-frequency performance of the antenna is more excellent.
As shown in fig. 7, the antenna provided by the embodiment of the present invention has better antenna efficiency.
Based on the foregoing structure, an embodiment of the present invention further provides a mobile terminal, where the mobile terminal includes the antenna described in any of the foregoing embodiments.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. An antenna, characterized in that the antenna has a feed point and a feed point, the antenna comprising a circuit board, a metal frame, a tuning switch and a connection structure;
the circuit board has a system ground;
the metal frame comprises a first frame and two second frames, the first frame is positioned at the bottom of the metal frame, the two second frames are respectively arranged on two opposite sides of the first frame, the length of the first frame is smaller than that of the second frames, a clearance area is formed between the first frame and the system ground, the second frames are connected with the system ground, and a first broken joint and a second broken joint are respectively formed between two opposite ends of the first frame and the two second frames;
the tuning switch is connected with the first frame through the first connecting body, the first connecting body is connected with the feed point, the second connecting body is connected with the first frame, the second connecting body is connected with the feed point, and the third connecting body is connected between the second frame and the system ground;
the first frame forms a low-frequency radiation part of the antenna, the first connecting body and the second connecting body form a medium-frequency radiation part of the antenna, the third connecting body forms a high-frequency radiation part of the antenna, and the tuning switch is used for adjusting the frequency of the low-frequency radiation part and has no influence on the medium-frequency radiation part and the high-frequency radiation part.
2. The antenna of claim 1, wherein at least one of the first connector and the second connector is an FPC, an LDS molded structure, or a spring sheet.
3. The antenna of claim 1, wherein the second connector is an L-shaped structure.
4. The antenna of claim 1, wherein one end of the third connecting body is connected to a side of the system ground close to the feeding point, and the other end of the third connecting body is connected to a side of the second frame close to the feeding point.
5. The antenna of claim 1, wherein the connection location of the feeding point and the first frame is located on a side of the first frame near the second gap.
6. The antenna of claim 1, wherein the tuning switch is an adjustable capacitor.
7. The antenna according to any one of claims 1-6, wherein the low frequency band of the antenna is 698-960 MHz, and the medium and high frequency band of the antenna is 1710-2690 MHz.
8. A mobile terminal, characterized in that it comprises an antenna according to any of claims 1-7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710043034.2A CN106972273B (en) | 2017-01-19 | 2017-01-19 | Antenna and mobile terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710043034.2A CN106972273B (en) | 2017-01-19 | 2017-01-19 | Antenna and mobile terminal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106972273A CN106972273A (en) | 2017-07-21 |
| CN106972273B true CN106972273B (en) | 2021-09-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710043034.2A Expired - Fee Related CN106972273B (en) | 2017-01-19 | 2017-01-19 | Antenna and mobile terminal |
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| Country | Link |
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| CN (1) | CN106972273B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109742512A (en) * | 2018-12-24 | 2019-05-10 | 瑞声科技（南京）有限公司 | Antenna modules and mobile terminal |
| CN109818138B (en) * | 2019-03-07 | 2023-04-07 | 闻泰通讯股份有限公司 | Antenna structure |
| CN110544820B (en) * | 2019-08-21 | 2021-01-26 | 青岛海信移动通信技术股份有限公司 | Mobile phone antenna and mobile phone |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FI20095441A (en) * | 2009-04-22 | 2010-10-23 | Pulse Finland Oy | Built-in monopole antenna |
| CN103326124B (en) * | 2013-05-29 | 2015-04-01 | 上海安费诺永亿通讯电子有限公司 | Adjustable multi-band antenna system |
| CN103346397B (en) * | 2013-06-21 | 2016-01-13 | 上海安费诺永亿通讯电子有限公司 | Be applicable to the frequency antenna system with metal frame architecture mobile terminal |
| CN104681929B (en) * | 2013-11-30 | 2019-05-21 | 深圳富泰宏精密工业有限公司 | Antenna structure and wireless communication device with the antenna structure |
| CN104752822B (en) * | 2013-12-31 | 2019-11-22 | 深圳富泰宏精密工业有限公司 | The wireless communication device of antenna structure and the application antenna structure |
| CN103811864B (en) * | 2014-01-25 | 2016-08-17 | 惠州硕贝德无线科技股份有限公司 | A kind of metal edge frame double-frequency coupling antennae |
| CN203932323U (en) * | 2014-05-28 | 2014-11-05 | 瑞声精密制造科技(常州)有限公司 | Be applicable to have the antenna system of the mobile terminal of metal frame structure |
| CN204189957U (en) * | 2014-11-18 | 2015-03-04 | 惠州硕贝德无线科技股份有限公司 | A kind of tunable LTE metal edge frame antenna being applied to smart mobile phone |
| CN105792560B (en) * | 2014-12-24 | 2020-01-31 | 深圳富泰宏精密工业有限公司 | Shell, electronic device applying shell and manufacturing method of electronic device |
| CN105932408B (en) * | 2015-12-18 | 2018-09-11 | 广东工业大学 | A kind of metal edge frame LTE tuned antennas of high-isolation |
| CN105958180A (en) * | 2016-04-26 | 2016-09-21 | 努比亚技术有限公司 | Antenna, mobile terminal and control method thereof |
| CN205846212U (en) * | 2016-07-01 | 2016-12-28 | 瑞声科技(新加坡)有限公司 | Whole frequency band antenna structure of mobile phole |
| CN106058436A (en) * | 2016-08-04 | 2016-10-26 | 北京小米移动软件有限公司 | Antenna module and electronic equipment |
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2017
- 2017-01-19 CN CN201710043034.2A patent/CN106972273B/en not_active Expired - Fee Related
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| CN106972273A (en) | 2017-07-21 |
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Granted publication date: 20210910 |