CN113013613A - Metal frame antenna system and intelligent wrist-watch - Google Patents
Metal frame antenna system and intelligent wrist-watch Download PDFInfo
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- CN113013613A CN113013613A CN202110182610.8A CN202110182610A CN113013613A CN 113013613 A CN113013613 A CN 113013613A CN 202110182610 A CN202110182610 A CN 202110182610A CN 113013613 A CN113013613 A CN 113013613A
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- 229910052751 metal Inorganic materials 0.000 title claims abstract description 145
- 239000002184 metal Substances 0.000 title claims abstract description 145
- 238000002955 isolation Methods 0.000 abstract description 12
- 238000010586 diagram Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 238000010295 mobile communication Methods 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910001092 metal group alloy Inorganic materials 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- 239000004332 silver Substances 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
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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
- H01Q1/44—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
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
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Abstract
The invention provides a metal frame antenna system and an intelligent watch, which comprise a circular metal frame, a metal floor, a circuit main board and two feed units, wherein the metal frame is connected with the metal floor; the circuit main board is positioned in the metal frame; the metal floor is positioned on the lower surface of the circuit main board and is arranged at intervals with the metal frame; the two feed units are arranged on the upper surface of the circuit main board at 90 degrees, electrically connected with the circuit main board and arranged at intervals with the metal frame. By arranging the two feed units and arranging the feed units and the metal frame at intervals, resonance can be generated between the metal frame and the two feed units, the resonance efficiency of the antenna is ensured, and the antenna loss is reduced; and because the two feed units are mutually 90 degrees, the isolation between the two feed units is higher. The problem of antenna loss among the current intelligent wrist-watch great, the isolation is relatively poor is solved.
Description
Technical Field
The invention relates to the technical field of wireless communication, in particular to a metal frame antenna system and an intelligent watch.
Background
With the development of mobile technology, many traditional electronic products also have added mobile communication functions, such as watches which can only be used for time viewing in the past, and nowadays, mobile communication can also be performed through mobile communication connections, such as answering a call, receiving short messages, GPS positioning, and the like. Such watches having one or more of reminder, navigation, calibration, monitoring, interaction, etc. are collectively referred to as smart watches.
In order to wear the smart watch, the current smart watch is usually designed to be small in size, which causes the available area of the antenna to be correspondingly reduced; meanwhile, because the density of devices inside the product is concentrated, the clearance of the antenna is not enough, when the antenna is worn on the body, the influence of the human body on the antenna is great, the efficiency of the antenna is poor, and the frequency required by the antenna is difficult to achieve through antenna resonance. Even if a matching circuit is additionally added for tuning, the loss of the antenna is large and the isolation is poor.
Disclosure of Invention
The invention aims to provide a metal frame antenna system and an intelligent watch, and aims to solve the problems of high antenna loss and poor isolation in the existing intelligent watch.
In order to solve the technical problem, the invention provides a metal frame antenna system, which comprises a metal frame, a circuit main board, a metal floor and two feed units, wherein the metal frame antenna system comprises a metal frame, a circuit main board, a metal floor and two feed units; the metal frame is in a circular ring shape; the circuit main board is positioned in the metal frame; the metal floor is positioned on the lower surface of the circuit main board and is arranged at intervals with the metal frame; the two feed units are arranged on the upper surface of the circuit main board in an angle of 90 degrees with each other, electrically connected with the circuit main board and arranged at intervals with the metal frame.
Optionally, in the metal frame antenna system, the metal floor is circular and is concentrically disposed with the metal frame.
Optionally, in the metal frame antenna system, the two feed units each include a first feed branch and a second feed branch, and the first feed branch and the second feed branch are connected in a T shape.
Optionally, in the metal frame antenna system, one end of the first feeding branch is connected to the circuit board, and the other end of the first feeding branch is connected to a midpoint of the second feeding branch; the second feed branch is located in a gap between the metal frame and the metal floor.
Optionally, in the metal frame antenna system, the second feeding branch is arc-shaped, and an opening of the second feeding branch faces the first feeding branch.
Optionally, in the metal frame antenna system, an arc value of the second feed branch is 30 ± 5 °.
Optionally, in the metal frame antenna system, the length of the second feed branch is 5 ± 1mm, the width of the second feed branch is 0.5 ± 0.1mm, and the minimum distance between the second feed branch and the metal frame is 0.8 mm.
Optionally, in the metal frame antenna system, the diameter of the metal frame is 40 ± 2mm, and the thickness is 1 ± 0.5 mm.
Optionally, in the metal frame antenna system, the thickness of the circuit board is 0.8 ± 0.2mm, and the relative dielectric constant is 4.4.
In order to solve the technical problem, the invention further provides an intelligent watch, wherein the intelligent watch comprises the metal frame antenna system.
The invention provides a metal frame antenna system and an intelligent watch, wherein the metal frame antenna system comprises a metal frame, a metal floor, a circuit main board and two feed units; the metal frame is in a circular ring shape; the circuit main board is positioned in the metal frame; the metal floor is positioned on the lower surface of the circuit main board and is arranged at intervals with the metal frame; the two feed units are arranged on the upper surface of the circuit main board in an angle of 90 degrees with each other, electrically connected with the circuit main board and arranged at intervals with the metal frame. By arranging the two feed units and arranging the feed units and the metal frame at intervals, resonance can be generated between the metal frame and the two feed units, the resonance efficiency of the antenna is ensured, and the antenna loss is reduced; and because the two feed units are mutually 90 degrees, the isolation between the two feed units is higher. The problem of antenna loss among the current intelligent wrist-watch great, the isolation is relatively poor is solved.
Drawings
Fig. 1 is a schematic structural diagram of a metal frame antenna system provided in this embodiment;
fig. 2 is a side cross-sectional view of the metal frame antenna system provided in this embodiment;
fig. 3 is a schematic diagram of a simulation result of the metal frame antenna system provided in this embodiment;
fig. 4 is a characteristic directional diagram of the metal frame antenna system provided in this embodiment;
wherein the reference numerals are as follows:
10-a metal frame; 20-a circuit motherboard; 30-metal floor; 40-a feeding unit; 41-a first feed stub; 42-second feed stub.
Detailed Description
The metal frame antenna system and the smart watch according to the present invention will be described in detail with reference to the accompanying drawings and specific embodiments. It is to be noted that the drawings are in a very simplified form and are not to precise scale, which is merely for the purpose of facilitating and distinctly claiming the embodiments of the present invention. Further, the structures illustrated in the drawings are often part of actual structures. In particular, the drawings may have different emphasis points and may sometimes be scaled differently.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the accompanying drawings are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order, and it is to be understood that such structures as are used are interchangeable where appropriate. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
The present embodiment provides a metal frame antenna system, as shown in fig. 1 and fig. 2, the metal frame antenna system includes a metal frame 10, a circuit board 20, a metal floor 30, and two feeding units 40; the metal frame 10 is annular; the circuit main board 20 is located in the metal frame 10; the metal floor 30 is located on the lower surface of the circuit board 20, and is spaced from the metal frame 10; the two feeding units 40 are arranged on the upper surface of the circuit board 20 at an angle of 90 degrees with each other, electrically connected to the circuit board 20, and spaced from the metal frame 10.
According to the metal frame antenna system provided by the embodiment, the two feeding units are arranged, and the feeding units and the metal frame are arranged at intervals, so that resonance can occur between the metal frame and the two feeding units, the resonance efficiency of the antenna is ensured, and the antenna loss is reduced; and because the two feed units are mutually 90 degrees, the isolation between the two feed units is higher. The problem of antenna loss among the current intelligent wrist-watch great, the isolation is relatively poor is solved.
Specifically, in the present embodiment, as shown in fig. 1 and fig. 2, the circuit board 20 is embedded in the metal frame 10 (i.e., the outer diameter of the circuit board 20 is the same as the inner diameter of the metal frame 10), and is located at the lower portion of the metal frame 10; the lower surface of the metal floor 30 is flush with the bottom surface of the metal frame 10; further, the lower surface of the circuit board 20 is in contact with the metal floor 30. In this way, the internal space of the metal frame 10 can be as large as possible, thereby facilitating the design of other electronic components and other structures.
It should be noted that, in other embodiments, the circuit board 20 and the metal floor 30 are not required to be in contact with each other, and the height positions of the circuit board 20 and the metal floor 30 relative to the metal frame 10 are not required to be at the bottom; the position settings of the three can be adjusted according to actual needs.
Preferably, in the present embodiment, the metal floor 30 is circular and is disposed concentrically with the metal frame 10. Thus, the signal energy on the metal frame 10 can uniformly flow into the ground, so that the signal omnidirectionality is better.
In this embodiment, each of the two feeding units 40 includes a first feeding branch 41 and a second feeding branch 42, and the first feeding branch 41 and the second feeding branch 42 are connected in a T shape.
Further, one end of the first feeding branch 41 is connected to the circuit board 20, and the other end is connected to the midpoint of the second feeding branch 42; the second feeding branch 42 is located in a gap between the metal frame 10 and the metal floor 30. The second feeding branch 42 can generate coupling resonance with the metal frame 10, so that the metal frame 10 becomes a radiator; meanwhile, since the second feeding branch 42 is located in the gap between the metal frame 10 and the metal floor 30, the feeding efficiency is optimized, and the energy absorbed by the metal floor 30 is minimized.
Since the metal frame 10 is annular, in order to improve the coupling efficiency between the power feeding unit 40 and the metal frame 10, it is preferable that the second power feeding branch 42 is arc-shaped, and the opening faces the first power feeding branch 41. Thus, the second feeding branch 42 and the metal frame 10 are parallel to each other, thereby improving the coupling efficiency.
The inventor has experimentally verified that when the camber value of the second feeding branch is 30 +/-5 degrees, the comprehensive performance is the best.
In this embodiment, the length L of the second feeding branch 42 is 5 ± 1mm, the width thereof is 0.5 ± 0.1mm, and the minimum distance d between the second feeding branch and the metal frame 10 is 0.8 mm; the diameter D1 of the metal frame 10 is 40 +/-2 mm, and the thickness W is 1 +/-0.5 mm; the thickness of the circuit main board 20 is 0.8 +/-0.2 mm, and the relative dielectric constant is 4.4; the diameter D2 of the metal floor 30 is 17 + -3 mm.
The performance advantage of the metal bezel antenna system provided by the present invention is illustrated in an embodiment below.
With continued reference to fig. 1 and 2, in the present embodiment, the outer diameter D1 of the metal bezel 10 is 40mm, which is the size of a common watch, and the thickness thereof is 1 mm; the material of the metal frame 10 may be copper, silver or other metal alloy. The circuit board 20 is made of FR4 board with a thickness of 0.8mm, has a loss tangent value of 0.02, and has a size matched with the inner diameter of the metal frame 10, and can be fixed in the metal frame 10. On the lower surface of the circuit board 20, a metal floor 30 with an outer diameter D2 of 18mm is disposed, the material of the metal floor 30 may be copper, silver or other metal alloy, and the metal floor 30 functions as an equivalent floor of the antenna. Two T-shaped feeding units 40 arranged at 90 degrees are arranged on the upper surface of the circuit main board 20, the width of each feeding unit is 0.5mm, one end of each first feeding branch 41 is connected with the circuit main board 20, and the other end of each first feeding branch is connected with the midpoint of each second feeding branch 42; the distance between the second feeding branch 42 and the metal frame 10 is 0.8 mm; the length of the second feeding branch 42 is 5 +/-1 mm, and the radian value is 30 degrees.
The simulation result of the metal frame antenna system formed by the structure is shown in fig. 3. As can be seen from fig. 3, the metal frame antenna system provided by the embodiment has two resonant modes near 2.5GHz, and the radiation efficiency in both modes is good; furthermore, the characteristic angle of the two resonant modes around 2.5GHz is 180 °, indicating that the two modes can achieve better omnidirectional radiation.
The characteristic pattern of the metal frame antenna system formed by the structure is shown in fig. 4. As can be seen from fig. 4, there are two resonant modes near 2.5GHz, one of which has a pattern null in the y-direction and the other has a pattern null in the x-direction. That is, the two resonant mode zeros are orthogonal, with good orthogonality. Experiments prove that the port isolation of the metal frame antenna system formed by the structure can reach more than 20dB, and the isolation is high.
This embodiment still provides a smart watch, smart watch includes as above metal frame antenna system.
It should be noted that the smart watch may further include other components or structures, and the design of the other components or structures is well known to those skilled in the art and will not be described herein again. The design of the integrated circuit of the circuit diagram on the circuit board 20 is well known to those skilled in the relevant art, and will not be described herein.
In summary, in the metal frame antenna system and the smart watch provided in this embodiment, the metal frame antenna system includes a metal frame, a metal floor, a circuit board, and two feeding units; the metal frame is in a circular ring shape; the circuit main board is positioned in the metal frame; the metal floor is positioned on the lower surface of the circuit main board and is arranged at intervals with the metal frame; the two feed units are arranged on the upper surface of the circuit main board in an angle of 90 degrees with each other, electrically connected with the circuit main board and arranged at intervals with the metal frame. By arranging the two feed units and arranging the feed units and the metal frame at intervals, resonance can be generated between the metal frame and the two feed units, the resonance efficiency of the antenna is ensured, and the antenna loss is reduced; and because the two feed units are mutually 90 degrees, the isolation between the two feed units is higher. The problem of antenna loss among the current intelligent wrist-watch great, the isolation is relatively poor is solved.
The above description is only for the purpose of describing the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention, and any variations and modifications made by those skilled in the art based on the above disclosure are within the scope of the appended claims.
Claims (10)
1. The metal frame antenna system is characterized by comprising a metal frame, a circuit main board, a metal floor and two feed units; the metal frame is in a circular ring shape; the circuit main board is positioned in the metal frame; the metal floor is positioned on the lower surface of the circuit main board and is arranged at intervals with the metal frame; the two feed units are arranged on the upper surface of the circuit main board in an angle of 90 degrees with each other, electrically connected with the circuit main board and arranged at intervals with the metal frame.
2. The metal bezel antenna system of claim 1, wherein the metal floor is circular and is disposed concentrically with the metal bezel.
3. The metal bezel antenna system of claim 1, wherein both of the feed units comprise a first feed stub and a second feed stub, the first feed stub and the second feed stub being in a T-connection.
4. The metal bezel antenna system of claim 3, wherein one end of the first feed stub is connected to the circuit board, and the other end is connected to a midpoint of the second feed stub; the second feed branch is located in a gap between the metal frame and the metal floor.
5. The metal bezel antenna system of claim 4, wherein the second feed stub is arcuate in shape and opens towards the first feed stub.
6. The metal bezel antenna system of claim 5, wherein the second feed stub has a camber value of 30 ± 5 °.
7. The metal bezel antenna system of claim 4, wherein the second feed stub has a length of 5 ± 1mm, a width of 0.5 ± 0.1mm, and a minimum distance of 0.8mm from the metal bezel.
8. The metal bezel antenna system of claim 1, wherein the metal bezel has a diameter of 40 ± 2mm and a thickness of 1 ± 0.5 mm.
9. The metal bezel antenna system of claim 1, wherein the circuit board has a thickness of 0.8 ± 0.2mm and a relative dielectric constant of 4.4.
10. A smart watch, characterized in that it comprises a metal bezel antenna system as claimed in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110182610.8A CN113013613A (en) | 2021-02-08 | 2021-02-08 | Metal frame antenna system and intelligent wrist-watch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110182610.8A CN113013613A (en) | 2021-02-08 | 2021-02-08 | Metal frame antenna system and intelligent wrist-watch |
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| Publication Number | Publication Date |
|---|---|
| CN113013613A true CN113013613A (en) | 2021-06-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110182610.8A Pending CN113013613A (en) | 2021-02-08 | 2021-02-08 | Metal frame antenna system and intelligent wrist-watch |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017205998A1 (en) * | 2016-05-28 | 2017-12-07 | 华为终端（东莞）有限公司 | Communication terminal |
| CN107546461A (en) * | 2016-06-23 | 2018-01-05 | 华为终端（东莞）有限公司 | The near-field communication aerial and the wearable product of intelligence of a kind of wearable product of intelligence |
| CN108767499A (en) * | 2018-04-28 | 2018-11-06 | 华勤通讯技术有限公司 | Metal edge frame antenna and terminal device |
| CN209929488U (en) * | 2019-03-28 | 2020-01-10 | 深圳市晶利德实业有限公司 | Terminal antenna |
| CN112332080A (en) * | 2020-10-29 | 2021-02-05 | 浙江海通通讯电子股份有限公司 | Intelligent watch antenna |
-
2021
- 2021-02-08 CN CN202110182610.8A patent/CN113013613A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017205998A1 (en) * | 2016-05-28 | 2017-12-07 | 华为终端（东莞）有限公司 | Communication terminal |
| CN107925156A (en) * | 2016-05-28 | 2018-04-17 | 华为终端（东莞）有限公司 | Communication terminal |
| CN107546461A (en) * | 2016-06-23 | 2018-01-05 | 华为终端（东莞）有限公司 | The near-field communication aerial and the wearable product of intelligence of a kind of wearable product of intelligence |
| CN108767499A (en) * | 2018-04-28 | 2018-11-06 | 华勤通讯技术有限公司 | Metal edge frame antenna and terminal device |
| CN209929488U (en) * | 2019-03-28 | 2020-01-10 | 深圳市晶利德实业有限公司 | Terminal antenna |
| CN112332080A (en) * | 2020-10-29 | 2021-02-05 | 浙江海通通讯电子股份有限公司 | Intelligent watch antenna |
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Country or region after: China Address after: 215300 Room 009, No. 55, Shengchuang Road, Yushan Town, Kunshan, Suzhou, Jiangsu Province Applicant after: KUNSHAN RUIXIANG XUNTONG COMMUNICATION TECHNOLOGY Co.,Ltd. Address before: 215300 no.1689-5 Zizhu Road, Yushan Town, Kunshan City, Suzhou City, Jiangsu Province Applicant before: KUNSHAN RUIXIANG XUNTONG COMMUNICATION TECHNOLOGY Co.,Ltd. Country or region before: China |