CN109037908B - Antenna system of mobile terminal and mobile terminal - Google Patents
Antenna system of mobile terminal and mobile terminal Download PDFInfo
- Publication number
- CN109037908B CN109037908B CN201810728139.6A CN201810728139A CN109037908B CN 109037908 B CN109037908 B CN 109037908B CN 201810728139 A CN201810728139 A CN 201810728139A CN 109037908 B CN109037908 B CN 109037908B
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- 230000008878 coupling Effects 0.000 claims abstract description 46
- 238000010168 coupling process Methods 0.000 claims abstract description 46
- 238000005859 coupling reaction Methods 0.000 claims abstract description 46
- 230000005684 electric field Effects 0.000 claims description 5
- 238000005452 bending Methods 0.000 claims description 2
- 238000004891 communication Methods 0.000 abstract description 8
- 238000010521 absorption reaction Methods 0.000 abstract description 5
- 230000005855 radiation Effects 0.000 abstract description 5
- 230000009467 reduction Effects 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000002776 aggregation Effects 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
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
- H01Q1/12—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
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Support Of Aerials (AREA)
- Telephone Set Structure (AREA)
Abstract
The invention provides an antenna system of a mobile terminal, which comprises a circuit board, an antenna bracket supported on the circuit board and an antenna wire arranged on the antenna bracket; the circuit board comprises a floor layer and a feed part, and the antenna routing is electrically connected with the feed part and the floor layer; coupling wires connected with the floor layer are arranged on the circuit board, and the coupling wires are at least overlapped with the projection parts of the antenna wires in the thickness direction of the circuit board; and a gap is formed in the position of the antenna wire corresponding to the coupling wire. The antenna system provided by the invention can enhance the bandwidth and efficiency of the antenna, improve the performance of the antenna, and make up for radiation absorption and frequency deviation caused by hand holding of a human hand on the antenna, thereby avoiding the overall performance reduction of the antenna system and ensuring the communication quality.
Description
Technical Field
The present invention relates to the field of wireless communication technologies, and in particular, to an antenna system of a mobile terminal and a mobile terminal.
Background
Portable mobile terminals such as mobile phones, tablet computers, etc. are provided with antennas so as to be able to receive and transmit electromagnetic wave signals to enable wireless communication.
In order to meet the requirement of a use frequency band of a mobile terminal and support a data transmission technology of multi-carrier aggregation, the mobile terminal must have functions of high bandwidth and efficiency, and a commonly adopted method is to obtain good antenna bandwidth and efficiency by increasing the area of an antenna except for changing an antenna wiring mode.
Therefore, there is a need to provide a new antenna system to solve the above problems.
Disclosure of Invention
The technical problem to be solved by the invention is to provide an antenna system with high bandwidth and efficiency.
In order to solve the above technical problem, the present invention provides an antenna system of a mobile terminal, which includes a circuit board, an antenna bracket supported on the circuit board, and an antenna trace disposed on the antenna bracket;
the circuit board comprises a floor layer and a feed part, and the antenna routing is electrically connected with the feed part and the floor layer;
coupling wires connected with the floor layer are arranged on the circuit board, and the coupling wires are at least overlapped with the projection parts of the antenna wires in the thickness direction of the circuit board;
and a gap is formed in the position of the antenna wire corresponding to the coupling wire.
Preferably, the circuit board is provided with an antenna clearance area, and the coupling trace is located in the antenna clearance area.
Preferably, the antenna bracket comprises a first plate body arranged opposite to the circuit board at an interval and a second plate body bent and extended from the first plate body to the circuit board; the antenna wires comprise first wires and second wires extending from the first wires in a bending mode, the first wires are attached to the surface, facing away from the circuit board, of the first board body, the second wires are attached to the surface, away from the circuit, of the second board body, and the first wires are arranged in the gaps.
Preferably, the distance between the first board body and the circuit board is 3.5 mm.
Preferably, the slit is disposed near a connection between the first wire and the second wire.
Preferably, the mobile terminal includes a USB interface, the USB interface is mounted on the circuit board, the coupling trace is disposed near the USB interface, and the coupling trace is configured to introduce an electric field near the USB interface into the coupling trace and couple the electric field with the antenna trace to generate an antenna signal by resonance.
Preferably, a projection of the slit in the thickness direction of the circuit board at least partially overlaps the coupling trace.
Preferably, the coupling trace has a rectangular shape with a dimension of 20x1 mm.
Preferably, the antenna system further includes a first spring leg and a second spring leg fixed on the circuit board, and both the first spring leg and the second spring leg are electrically connected to the antenna trace.
The invention also provides a mobile terminal which comprises the antenna system.
Compared with the related art, the antenna system of the mobile terminal provided by the invention has the following beneficial effects:
1) by arranging the coupling wire on the circuit board, the coupling wire and the antenna wire are mutually coupled to form a segment of 1700-2690MHz broadband to generate an antenna signal by resonance, on one hand, the bandwidth and efficiency of the antenna can be enhanced, and the performance of the antenna can be improved; on the other hand, the broadband formed by coupling can make up for radiation absorption and frequency deviation caused by hand holding of a human hand to the antenna, so that the integral performance of the antenna system is prevented from being reduced, and the communication quality is ensured;
2) the position of the antenna wire corresponding to the coupling wire is provided with a gap, so that the area of the antenna wire can be reduced, and the influence of great performance reduction caused by holding the antenna by hand is avoided;
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 exploded view of a part of a structure of a mobile terminal according to an embodiment of the present invention;
fig. 3 is a partially enlarged view of a portion a of the mobile terminal shown in fig. 2;
fig. 4 is a schematic structural diagram of an antenna trace in the mobile terminal shown in fig. 2;
fig. 5 is a return loss diagram of a mobile terminal according to an embodiment of the present invention;
fig. 6 is a comparison graph of antenna efficiency of the mobile terminal in the passive condition and in the human-head mode according to the embodiment of the present invention.
Detailed Description
The invention will be further explained with reference to the drawings and the embodiments.
As shown in fig. 1 to 4, an embodiment of the present invention provides an antenna system of a mobile terminal, which can receive and transmit an electromagnetic wave signal, so as to implement a communication function of the mobile terminal, where the mobile terminal may be a mobile phone, an ipad, a POS machine, and the present invention is not limited thereto.
Specifically, the mobile terminal 100 provided by the embodiment of the present invention includes an antenna system 10 and a USB interface 20, where the USB interface 20 is used for connecting and communicating the mobile terminal with an external device.
The antenna system 10 includes a circuit board 1, an antenna support 2 supported on the circuit board 1, an antenna trace 3 disposed on the antenna support 2, and a first spring leg 4 and a second spring leg 5 fixed on the circuit board 1.
The circuit board 1 includes a floor layer 11 and a power feeding section.
The antenna bracket 2 comprises a first plate 21 and a second plate 22, wherein the first plate 21 is arranged opposite to the circuit board 1 at an interval, and the second plate 22 is bent and extended from the first plate 21 to the circuit board 1. The second board 22 is supported and fixed at one end of the circuit board 1. A through hole 23 for the USB interface 20 to pass through is formed at a joint of the first board body 21 and the second board body 22.
The antenna trace 3 includes a connection end 31, a first trace 32 extending from the connection end 31, and a second trace 33 extending from the first trace 32. The connecting end 31 and the first trace 32 are attached to the surface of the first board body 21 facing away from the circuit board 1, and the second trace 33 is attached to the surface of the second board body 22 facing away from the circuit board 1. The connection end 31 includes a feeding end 311 and a grounding end 312 which are arranged at an interval, the feeding portion of the circuit board 1 includes an antenna feed 40 and an antenna feed ground 50, the feeding end 311 is electrically connected with the antenna feed 40 through the first spring leg 4, the grounding end 312 is electrically connected with the antenna feed ground 50 through the second spring leg 5, preferably, the first spring leg 4 and the second spring leg 5 are fixed on the circuit board 1 by welding and are respectively abutted against the feeding end 311 and the grounding end 312, so that stable connection between the circuit board 1 and the antenna trace 3 can be ensured.
When a user uses the mobile terminal, the antenna is easily subjected to radiation absorption and frequency offset of the antenna by hand holding of hands, so that the performance of the antenna is reduced, and the communication quality is poor. Therefore, the invention provides a method for keeping high bandwidth and efficiency of an antenna by a coupling mode, reducing the area of antenna routing and avoiding the influence of great performance reduction caused by holding the antenna by hands.
Specifically, the circuit board 1 is provided with an antenna clearance area, and the circuit board 1 is provided with a coupling trace 12 connected with the floor layer 11. The coupling trace 12 at least overlaps with the projection of the antenna trace 3 located above the coupling trace in the thickness direction of the circuit board 1. The coupling trace 12 is usually disposed close to the USB interface of the mobile terminal 100, so that the coupling trace 12 can introduce the electric field near the USB interface 20 into it and couple with the portion of the antenna trace overlapped with the antenna trace 3 above to form a segment of 1700-2690MHz broadband, so as to generate the antenna signal by resonance, and thus it is known that the broadband formed by coupling already covers the low, medium and high frequency bands. Because the section of broadband is formed by coupling the coupling trace 12 and the antenna traces overlapped with the coupling trace, the area of the original antenna traces is not changed, and on the contrary, under the condition of the same area of the antenna traces, the bandwidth and efficiency of the antenna can be enhanced by arranging the coupling trace on the circuit board, and the performance of the antenna is improved. Of course, the coupling trace 12 is not limited to be disposed near the USB interface 20, and may be disposed near other electronic components capable of generating an electric field, such as an audio interface.
The first trace 32 is provided with the slit 321 at a position corresponding to the coupling trace 12, so as to reduce the area of the antenna trace and avoid the influence of performance degradation caused by holding the antenna by hand. Preferably, a projection of the slit 321 in the thickness direction of the circuit board 1 at least partially overlaps with the coupling trace 12. Preferably, the slit 321 is disposed near a connection of the first trace 32 and the second trace 33.
Since the antennas are coupled to each other at a certain interval, the first board 21 carrying the first trace 32 is spaced from the circuit board 1, and preferably, the distance between the first board 21 and the circuit board 1 is 3.5 mm.
The size of the coupling trace 12 can be set according to the size of the antenna trace 3, and generally occupies 1/8-1/15 of the area of the antenna trace 3, in this embodiment, the coupling trace 12 is rectangular and has a size of 20x1 mm.
Fig. 5 shows a return loss diagram of the mobile terminal according to the embodiment of the present invention, and as can be seen from fig. 4, the antenna system can cover 699-960MHz and 1710-2690 MHz.
Fig. 6 is a diagram illustrating comparison between the antenna efficiency of the mobile terminal in the passive condition and the antenna efficiency in the handset mode according to the embodiment of the present invention, and as can be seen from fig. 6, the antenna efficiency in the handset mode is only slightly lower than the antenna efficiency in the passive condition, even at 2070 and 2570MHz, and the antenna efficiency in the handset mode is still higher than the antenna efficiency in the passive condition, which indicates that radiation absorption and frequency offset caused by handset to the antenna can be compensated by setting the coupling trace, thereby avoiding performance degradation of the antenna and ensuring communication quality.
Compared with the related art, the antenna system of the mobile terminal provided by the invention has the following beneficial effects:
1) by arranging the coupling wire on the circuit board, the coupling wire and the antenna wire are mutually coupled to form a segment of 1700-2690MHz broadband to generate an antenna signal by resonance, on one hand, the bandwidth and efficiency of the antenna can be enhanced, and the performance of the antenna can be improved; on the other hand, the broadband formed by coupling can make up for radiation absorption and frequency deviation caused by hand holding of a human hand to the antenna, so that the integral performance of the antenna system is prevented from being reduced, and the communication quality is ensured;
2) the position of the antenna wire corresponding to the coupling wire is provided with a gap, so that the area of the antenna wire can be reduced, and the influence of performance reduction caused by holding the antenna by hand is avoided.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (9)
1. The antenna system of the mobile terminal is characterized by comprising a circuit board, an antenna bracket supported on the circuit board and an antenna wire arranged on the antenna bracket;
the circuit board comprises a floor layer and a feed part, and the antenna routing is electrically connected with the feed part and the floor layer;
coupling wires connected with the floor layer are arranged on the circuit board, and the coupling wires are at least overlapped with the projection parts of the antenna wires in the thickness direction of the circuit board;
the position of the antenna wire corresponding to the coupling wire is provided with a gap;
the antenna bracket comprises a first plate body and a second plate body, wherein the first plate body is arranged opposite to the circuit board at an interval, and the second plate body is bent and extended from the first plate body to the circuit board; the antenna wires comprise first wires and second wires extending from the first wires in a bending mode, the first wires are attached to the surface, facing away from the circuit board, of the first board body, the second wires are attached to the surface, away from the circuit, of the second board body, and the first wires are arranged in the gaps.
2. The antenna system of claim 1, wherein the circuit board is provided with an antenna clearance area, and the coupling trace is located in the antenna clearance area.
3. The antenna system of claim 2, wherein a spacing between the first board body and the circuit board is 3.5 mm.
4. The antenna system of claim 3, wherein the slot is disposed proximate to a junction of the first trace and the second trace.
5. The antenna system according to claim 1, wherein the mobile terminal includes a USB interface, the USB interface is mounted on the circuit board, the coupling trace is disposed near the USB interface, and the coupling trace is configured to induce an electric field near the USB interface into the coupling trace and couple with the antenna trace to generate an antenna signal by resonance.
6. The antenna system of claim 1, wherein a projection of the slot in a thickness direction of the circuit board at least partially overlaps the coupling trace.
7. The antenna system of claim 1, wherein the coupling trace is rectangular with dimensions 20x1 mm.
8. The antenna system of claim 1, further comprising first and second spring legs secured to the circuit board, the first and second spring legs each electrically connected to the antenna trace.
9. A mobile terminal, characterized in that it comprises an antenna system according to any of claims 1-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810728139.6A CN109037908B (en) | 2018-07-05 | 2018-07-05 | Antenna system of mobile terminal and mobile terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810728139.6A CN109037908B (en) | 2018-07-05 | 2018-07-05 | Antenna system of mobile terminal and mobile terminal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109037908A CN109037908A (en) | 2018-12-18 |
| CN109037908B true CN109037908B (en) | 2020-11-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810728139.6A Active CN109037908B (en) | 2018-07-05 | 2018-07-05 | Antenna system of mobile terminal and mobile terminal |
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| Country | Link |
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| CN (1) | CN109037908B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112382843B (en) * | 2020-11-03 | 2022-12-23 | 上海闻泰信息技术有限公司 | Antenna and electronic equipment |
| CN115498395A (en) * | 2021-06-18 | 2022-12-20 | Oppo广东移动通信有限公司 | Antenna structure, electronic component and electronic equipment |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101998689A (en) * | 2009-08-14 | 2011-03-30 | 联想（上海）有限公司 | Mobile terminal and multiband aerial used on same |
| CN107742777A (en) * | 2017-10-12 | 2018-02-27 | 捷开通讯(深圳)有限公司 | The antenna assembly and mobile terminal of the expansible beamwidth of antenna |
| US10003122B2 (en) * | 2015-02-02 | 2018-06-19 | Qisda (Suzhou) Co., Ltd. | Antenna device and communication device using the same |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5043738A (en) * | 1990-03-15 | 1991-08-27 | Hughes Aircraft Company | Plural frequency patch antenna assembly |
| KR20080005812A (en) * | 2006-07-10 | 2008-01-15 | 삼성전자주식회사 | Inner antenna of dual radiating type for mobile communication terminal |
| CN101106215B (en) * | 2007-08-20 | 2011-04-20 | 哈尔滨工程大学 | Half U type open slot overlapping wide frequency band micro band antenna |
| CN110600872B (en) * | 2016-01-30 | 2023-09-12 | 华为技术有限公司 | Patch antenna unit and antenna |
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2018
- 2018-07-05 CN CN201810728139.6A patent/CN109037908B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101998689A (en) * | 2009-08-14 | 2011-03-30 | 联想（上海）有限公司 | Mobile terminal and multiband aerial used on same |
| US10003122B2 (en) * | 2015-02-02 | 2018-06-19 | Qisda (Suzhou) Co., Ltd. | Antenna device and communication device using the same |
| CN107742777A (en) * | 2017-10-12 | 2018-02-27 | 捷开通讯(深圳)有限公司 | The antenna assembly and mobile terminal of the expansible beamwidth of antenna |
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| Publication number | Publication date |
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| CN109037908A (en) | 2018-12-18 |
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Effective date of registration: 20231018 Address after: 213000 No.8 Fengqi Road, Wujin high tech Industrial Development Zone, Changzhou City, Jiangsu Province Patentee after: AAC MODULE TECHNOLOGIES (CHANGZHOU) Co.,Ltd. Patentee after: Jiangsu Jicui Zhongyi Technology Industry Development Co.,Ltd. Address before: 213167 Wujin high tech Development Zone, Changzhou, Jiangsu Patentee before: AAC MODULE TECHNOLOGIES (CHANGZHOU) Co.,Ltd. |