CN112531328A - GPS antenna and intelligent wearable device - Google Patents
GPS antenna and intelligent wearable device Download PDFInfo
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- CN112531328A CN112531328A CN202011357880.XA CN202011357880A CN112531328A CN 112531328 A CN112531328 A CN 112531328A CN 202011357880 A CN202011357880 A CN 202011357880A CN 112531328 A CN112531328 A CN 112531328A
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- gps antenna
- microstrip line
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- 230000005855 radiation Effects 0.000 claims abstract description 128
- 239000002184 metal Substances 0.000 claims abstract description 52
- 230000010287 polarization Effects 0.000 abstract description 9
- 238000000034 method Methods 0.000 description 8
- 230000008569 process Effects 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
- 230000006872 improvement Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000012938 design process Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 210000000707 wrist Anatomy 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
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/27—Adaptation for use in or on movable bodies
- H01Q1/273—Adaptation for carrying or wearing by persons or animals
-
- 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
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/52—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
- H01Q1/521—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure reducing the coupling between adjacent antennas
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/24—Combinations of antenna units polarised in different directions for transmitting or receiving circularly and elliptically polarised waves or waves linearly polarised in any direction
Abstract
The invention provides a GPS antenna and intelligent wearable equipment, which comprise a circular metal frame, and a first radiation unit, a second radiation unit, a third radiation unit and a fourth radiation unit which are respectively and electrically connected with the metal frame, wherein the first radiation unit, the second radiation unit, the third radiation unit and the fourth radiation unit are sequentially arranged at intervals and are in 90-degree central symmetry. The four centrosymmetric radiation units are arranged in the metal frame at intervals, so that the phase difference among the four radiation units is 90 degrees, a four-wall spiral circular polarization antenna is formed, and the performance of the GPS antenna is improved; simultaneously, through with radiating element and metal frame electric connection, increased the area in ground of antenna for antenna performance obtains further promotion, has solved the relatively poor problem of GPS antenna performance among the current intelligent wearing equipment.
Description
Technical Field
The invention relates to the technical field of wireless communication, in particular to a GPS antenna and intelligent wearable equipment.
Background
The GPS (Global Positioning System) is a System that performs Positioning and navigation in real time in the Global area using GPS Positioning satellites. The GPS can provide navigation information such as low-cost and high-precision three-dimensional position, speed, precise timing and the like for global users.
The GPS antenna is usually arranged in the existing intelligent wearable equipment, so that the intelligent wearable equipment has a GPS positioning function. However, the performance and gain of the current GPS antenna are poor. The reasons for this problem are three: firstly, functions given to the intelligent wearable equipment are more and more at present, so that more and more electronic components in the intelligent wearable equipment are caused, the clearance of an antenna is smaller and smaller, and the interference of the antenna on the electronic components is stronger and stronger; with the improvement of the aesthetic requirements of people on the intelligent wearable equipment, designers can increase metal frames in the design process, and the metal frames can have certain influence on the performance of the antenna; thirdly, because intelligent wearing equipment wears on the people's health constantly, if intelligent wrist-watch wears wrist department, the influence that antenna performance receives human head and hand is great.
In order to improve the performance of the antenna, the mainstream method is to change the routing mode of the antenna and improve the performance of the antenna by improving the coupling efficiency between the antennas; or the metal frame is directly used as an antenna; or the antennas with different functions are synthesized to reduce the number of the antennas and avoid the problem caused by insufficient headroom of the antennas. But the improvement effect of the methods on the performance of the GPS antenna in the intelligent wearable device is not obvious.
Disclosure of Invention
The invention aims to provide a GPS antenna and intelligent wearable equipment, and aims to solve the problem that the performance of the GPS antenna in the existing intelligent wearable equipment is poor.
In order to solve the technical problem, the invention provides a GPS antenna, which includes a circular metal frame, and a first radiation unit, a second radiation unit, a third radiation unit, and a fourth radiation unit electrically connected to the metal frame, respectively, wherein the first radiation unit, the second radiation unit, the third radiation unit, and the fourth radiation unit are sequentially arranged at intervals and are centrosymmetric at 90 degrees.
Optionally, in the GPS antenna, the first radiation unit, the second radiation unit, the third radiation unit, and the fourth radiation unit each include a first branch and a second branch, one end of the first branch is electrically connected to the metal frame, and the other end of the first branch is connected to the second branch; the second branch knot and the metal frame are arranged in parallel.
Optionally, in the GPS antenna, the other end of the first stub is connected to one end of the second stub.
Optionally, in the GPS antenna, the first radiation unit is electrically connected to the metal bezel through a first matching circuit, the second radiation unit is electrically connected to the metal bezel through a second matching circuit, the third radiation unit is electrically connected to the metal bezel through a third matching circuit, and the fourth radiation unit is electrically connected to the metal bezel through a fourth matching circuit.
Optionally, in the GPS antenna, the first matching circuit is the same as the third matching circuit, and the second matching circuit is the same as the fourth matching circuit.
Optionally, in the GPS antenna, the GPS antenna further includes a dielectric plate, the dielectric plate is provided with a feeding point, and the first radiation unit, the second radiation unit, the third radiation unit, and the fourth radiation unit are electrically connected to the feeding point.
Optionally, in the GPS antenna, the feed point is located on a center of the central symmetry.
Optionally, in the GPS antenna, the first radiation unit is electrically connected to the feeding point through a first microstrip line, the second radiation unit is electrically connected to the feeding point through a second microstrip line, the third radiation unit is electrically connected to the feeding point through a third microstrip line, and the fourth radiation unit is electrically connected to the feeding point through a fourth microstrip line.
Optionally, in the GPS antenna, one end of the first microstrip line is connected to the first radiation unit, and the other end of the first microstrip line is connected to the second radiation unit; one end of the second microstrip line is connected with the second radiation unit, and the other end of the second microstrip line is electrically connected with the feed point; one end of the third microstrip line is connected with the third radiation unit, and the other end of the third microstrip line is connected with the fourth radiation unit; one end of the fourth microstrip line is connected with the fourth radiation unit, and the other end of the fourth microstrip line is electrically connected with the feed point.
In order to solve the technical problem, the invention further provides intelligent wearable equipment, and the intelligent wearable equipment comprises the GPS antenna.
The invention provides a GPS antenna and intelligent wearing equipment, which comprise a circular metal frame, and a first radiation unit, a second radiation unit, a third radiation unit and a fourth radiation unit which are respectively and electrically connected with the metal frame, wherein the first radiation unit, the second radiation unit, the third radiation unit and the fourth radiation unit are sequentially arranged at intervals and are in 90-degree central symmetry. The four centrosymmetric radiation units are arranged in the metal frame at intervals, so that the phase difference among the four radiation units is 90 degrees, a four-wall spiral circular polarization antenna is formed, and the performance of the GPS antenna is improved; simultaneously, through with radiating element and metal frame electric connection, increased the area in ground of antenna for antenna performance obtains further promotion, has solved the relatively poor problem of GPS antenna performance among the current intelligent wearing equipment.
Drawings
Fig. 1 is a schematic structural diagram of a GPS antenna provided in this embodiment;
wherein the reference numerals are as follows:
100-a metal bezel; 210-a first radiating element; 211 — a first branch of the first radiating element; 212-a second branch of the first radiating element; 220-a second radiating element; 221-a first branch of a second radiating element; 222-a second branch of the second radiating element; 230-a third radiating element; 231-a first branch of a third radiating element; 232-a second branch of the third radiating element; 240-a fourth radiation unit; 241-a first branch of a fourth radiation unit; 242-a second branch of a fourth radiating element; 301-feeding point; 310-a first microstrip line; 320-a second microstrip line; 330-a third microstrip line; 340-fourth microstrip line.
Detailed Description
The GPS antenna and the smart wearable device 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 GPS antenna, as shown in fig. 1, the GPS antenna includes a circular metal frame 100, and a first radiation unit 210, a second radiation unit 220, a third radiation unit 230, and a fourth radiation unit 240 electrically connected to the metal frame 100, respectively, where the first radiation unit 210, the second radiation unit 220, the third radiation unit 230, and the fourth radiation unit 240 are sequentially disposed at intervals and are in 90 ° central symmetry.
In the GPS antenna provided in this embodiment, four centrosymmetric radiation units (the first radiation unit 210, the second radiation unit 220, the third radiation unit 230, and the fourth radiation unit 240) are arranged at intervals in the metal frame 100, so that a phase difference between the four radiation units is 90 °, thereby forming a four-wall spiral circular polarization antenna and improving the performance of the GPS antenna; simultaneously, through with radiating element and metal frame 100 electric connection, increased the area in ground of antenna for antenna performance obtains further promotion, has solved the relatively poor problem of GPS antenna performance among the current intelligent wearing equipment.
It should be noted that the width and length of the trace of the radiation unit, the distance between the trace and the metal frame, and the thickness and width of the metal frame need to be adjusted according to actual conditions, so as to obtain the optimal antenna performance.
In this embodiment, each of the first radiation unit 210, the second radiation unit 220, the third radiation unit 230, and the fourth radiation unit 240 includes a first branch and a second branch, one end of the first branch is electrically connected to the metal frame 100, and the other end of the first branch is connected to the second branch; the second branch is parallel to the metal frame 100.
Specifically, referring to fig. 1, taking the first radiation unit 210 as an example, the first radiation unit 210 includes a first branch 211 and a second branch 212, one end of the first branch 211 is electrically connected to the metal frame 100, and the other end of the first branch 211 is connected to the second branch 212; the second branches 212 are parallel to the metal frame 100. The other radiation units are arranged the same, and can be referred to each other, and are not described herein again.
As the first branch 211 is electrically connected with the metal frame 100, a path is formed between the first radiation unit 210 and the metal frame 100, so that coupling can be formed between the first radiation unit 210 and the metal frame 100, thereby improving the performance of the antenna; meanwhile, the second branch 212 is parallel to the metal frame 100, so that the coupling efficiency between the two branches is optimal.
In this embodiment, as can be seen from fig. 1, since the second branches of the four radiation units are all parallel to the metal frame 100, the second branches of the four radiation units form a circle concentric with the metal frame 100. Thus, the performance of the formed four-wall spiral circular polarization antenna can be optimized.
Preferably, in this embodiment, the other end of the first branch is connected to one end of the second branch. Therefore, the manufacturing and processing of the antenna are facilitated, and the circular polarization performance of the antenna is the best.
In the present embodiment, the first radiation unit 210 is electrically connected to the metal frame 100 through a first matching circuit (not shown), the second radiation unit 220 is electrically connected to the metal frame 100 through a second matching circuit (not shown), the third radiation unit 230 is electrically connected to the metal frame 100 through a third matching circuit (not shown), and the fourth radiation unit 240 is electrically connected to the metal frame 100 through a fourth matching circuit (not shown). The setting of the matching circuit can further optimize the center frequency and the bandwidth of the antenna through the adjustment of electronic components on the basis of the performance of the existing antenna. The relevant design of the matching circuit is well known to those skilled in the art and will not be described further here.
Further, in order to ensure that the phase difference between the four radiation units is 90 °, in this embodiment, the first matching circuit is the same as the third matching circuit, and the second matching circuit is the same as the fourth matching circuit. Of course, the four matching circuits can be the same, so that the process manufacturing difficulty is reduced, the part number of a product is reduced, and the complexity of a project is reduced.
In the GPS antenna provided in this embodiment, the GPS antenna further includes a dielectric plate (not shown in the figure), the dielectric plate is provided with a feeding point 301, and the first radiation unit 210, the second radiation unit 220, the third radiation unit 230, and the fourth radiation unit 240 are all electrically connected to the feeding point 301.
Specifically, the dielectric board may be a circuit board, for example, the circuit board of FR4 is selected as the dielectric board in this embodiment. In addition, in order to improve the tuning performance of the antenna, a microstrip network may be connected to the feed point 301, and in this embodiment, the microstrip network is selected as a conventional radio frequency matching circuit, and the specific design manner is not described herein again.
In this embodiment, in order to ensure that the currents flowing through the four radiating elements are the same, the feeding point 301 is disposed at the center of the central symmetry of the four radiating elements.
Further, in the present embodiment, as shown in fig. 1, the first radiation unit 210 is electrically connected to the feeding point 301 through a first microstrip line 310, the second radiation unit 220 is electrically connected to the feeding point 301 through a second microstrip line 320, the third radiation unit 230 is electrically connected to the feeding point 301 through a third microstrip line 330, and the fourth radiation unit 240 is electrically connected to the feeding point 301 through a fourth microstrip line 340. In this way, a complete path for the antenna is formed, so that the antenna is given a current.
Preferably, the positions of the connection points of the four microstrip lines and the four radiation units on the radiation units are the same, so that the current flowing through each radiation unit is ensured to be consistent with the current intensity layout, the circular polarization performance of the antenna is improved, and the radiation performance of the antenna is further improved.
In this embodiment, a specific connection manner between a microstrip line and a radiation unit is shown, please refer to fig. 1, where one end of the first microstrip line 310 is connected to the first radiation unit 210, and the other end of the first microstrip line 310 is connected to the second radiation unit 220; one end of the second microstrip line 320 is connected to the second radiating element 220, and the other end of the second microstrip line 320 is electrically connected to the feeding point 301; one end of the third microstrip line 330 is connected to the third radiating element 230, and the other end of the third microstrip line 330 is connected to the fourth radiating element 240; one end of the fourth microstrip line 340 is connected to the fourth radiating unit 240, and the other end of the fourth microstrip line 340 is electrically connected to the feeding point 301.
Preferably, a connection point of the first microstrip line 310 on the second radiation unit 220 coincides with a connection point of the second microstrip line 320 on the second radiation unit 220; the connection point of the third microstrip line 330 on the fourth radiating unit 240 coincides with the connection point of the fourth microstrip line 340 on the fourth radiating unit 240. Therefore, the number of the connecting points on each radiating unit is reduced, and current loss caused by excessive connecting points is avoided. Meanwhile, the first radiation unit 210 and the second radiation unit 220 are electrically connected through the first microstrip line 310, and the third radiation unit 230 and the fourth radiation unit 240 are electrically connected through the third microstrip line 330, so that a circularly polarized antenna is formed between the two groups of radiation units, thereby further improving the polarization performance of the antenna and contributing to the improvement of the transceiving performance of the antenna.
It should be noted that, in the description, only the connection manner of the microstrip line shown in fig. 1 is used to describe a possible connection manner between the microstrip line and the radiation unit, but the connection manner of the microstrip line should not be considered to be limited to the connection manner shown in fig. 1. Other connection modes of the microstrip line capable of realizing the feeding function also belong to the protection scope of the invention. For example, four microstrip lines may be connected to the radiating element and the feeding point 301, respectively, and be symmetric around the feeding point 301 as a center.
The microstrip line is configured as a common knowledge in the art, but it should be noted that the microstrip line between two groups of radiating elements needs to be guaranteed to be a central symmetric structure to guarantee the circular polarization of the antenna.
This embodiment still provides an intelligent wearing equipment, intelligent wearing equipment includes as above the GPS antenna. The intelligent wearable device can be, for example, a smart watch, a smart bracelet, and the like.
Take the intelligent wrist-watch of circle ring shape as an example, after being provided with the GPS antenna that this embodiment provided, it is in 1575 10 MHz's frequency range (GPS frequency channel), and antenna performance has obtained showing and has promoted. In addition, the GPS antenna provided by the embodiment has the advantages of smaller required clearance and simpler process, and reduces the design, manufacturing difficulty and complexity of the smart watch.
In summary, the GPS antenna and the intelligent wearable device provided by the embodiment include a circular metal frame, and a first radiation unit, a second radiation unit, a third radiation unit and a fourth radiation unit which are electrically connected to the metal frame, respectively, wherein the first radiation unit, the second radiation unit, the third radiation unit and the fourth radiation unit are sequentially arranged at intervals and are 90-degree centrosymmetric. The four centrosymmetric radiation units are arranged in the metal frame at intervals, so that the phase difference among the four radiation units is 90 degrees, a four-wall spiral circular polarization antenna is formed, and the performance of the GPS antenna is improved; simultaneously, through with radiating element and metal frame electric connection, increased the area in ground of antenna for antenna performance obtains further promotion, has solved the relatively poor problem of GPS antenna performance among the current intelligent wearing equipment.
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 utility model provides a GPS antenna, its characterized in that, the GPS antenna including be circular shape metal frame with respectively with metal frame electric connection's first radiating element, second radiating element, third radiating element and fourth radiating element, first radiating element the second radiating element the third radiating element with the fourth radiating element sets up at interval in order, and is 90 central symmetry.
2. The GPS antenna according to claim 1, wherein the first, second, third and fourth radiating elements each comprise a first branch and a second branch, one end of the first branch is electrically connected to the metal bezel, and the other end of the first branch is connected to the second branch; the second branch knot and the metal frame are arranged in parallel.
3. The GPS antenna of claim 2, wherein the other end of the first stub is connected to one end of the second stub.
4. The GPS antenna according to claim 1, wherein the first radiation unit is electrically connected to the metal bezel through a first matching circuit, the second radiation unit is electrically connected to the metal bezel through a second matching circuit, the third radiation unit is electrically connected to the metal bezel through a third matching circuit, and the fourth radiation unit is electrically connected to the metal bezel through a fourth matching circuit.
5. The GPS antenna of claim 4, wherein the first matching circuit is the same as the third matching circuit and the second matching circuit is the same as the fourth matching circuit.
6. The GPS antenna according to claim 1, further comprising a dielectric plate, wherein the dielectric plate is provided with a feeding point, and the first radiation unit, the second radiation unit, the third radiation unit, and the fourth radiation unit are electrically connected to the feeding point.
7. The GPS antenna of claim 6, wherein the feed point is located on a center of the central symmetry.
8. The GPS antenna according to claim 6, wherein the first radiating element is electrically connected to the feeding point through a first microstrip line, the second radiating element is electrically connected to the feeding point through a second microstrip line, the third radiating element is electrically connected to the feeding point through a third microstrip line, and the fourth radiating element is electrically connected to the feeding point through a fourth microstrip line.
9. The GPS antenna according to claim 8, wherein one end of the first microstrip line is connected to the first radiating element, and the other end of the first microstrip line is connected to the second radiating element; one end of the second microstrip line is connected with the second radiation unit, and the other end of the second microstrip line is electrically connected with the feed point; one end of the third microstrip line is connected with the third radiation unit, and the other end of the third microstrip line is connected with the fourth radiation unit; one end of the fourth microstrip line is connected with the fourth radiation unit, and the other end of the fourth microstrip line is electrically connected with the feed point.
10. An intelligent wearable device, characterized in that the intelligent wearable device comprises a GPS antenna according to any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011357880.XA CN112531328A (en) | 2020-11-27 | 2020-11-27 | GPS antenna and intelligent wearable device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011357880.XA CN112531328A (en) | 2020-11-27 | 2020-11-27 | GPS antenna and intelligent wearable device |
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| CN112531328A true CN112531328A (en) | 2021-03-19 |
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| CN202011357880.XA Pending CN112531328A (en) | 2020-11-27 | 2020-11-27 | GPS antenna and intelligent wearable device |
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| CN (1) | CN112531328A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113437478A (en) * | 2021-07-02 | 2021-09-24 | 歌尔科技有限公司 | Antenna and watchcase and wearing equipment that have this antenna |
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| CN111279275A (en) * | 2017-10-30 | 2020-06-12 | 佳明瑞士有限责任公司 | Watch with integrated antenna configuration |
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| US20130265199A1 (en) * | 2012-04-04 | 2013-10-10 | Kimmo Koskiniemi | Compact polarized antenna and methods |
| CN103943945A (en) * | 2014-02-21 | 2014-07-23 | 上海安费诺永亿通讯电子有限公司 | Watch antenna and watch with watch antenna |
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| CN113437478A (en) * | 2021-07-02 | 2021-09-24 | 歌尔科技有限公司 | Antenna and watchcase and wearing equipment that have this antenna |
| CN113437478B (en) * | 2021-07-02 | 2023-03-24 | 歌尔科技有限公司 | Antenna and watchcase and wearing equipment that have this antenna |
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Application publication date: 20210319 |