CN215645010U - Antenna structure and electronic equipment - Google Patents
Antenna structure and electronic equipment Download PDFInfo
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- CN215645010U CN215645010U CN202120997800.0U CN202120997800U CN215645010U CN 215645010 U CN215645010 U CN 215645010U CN 202120997800 U CN202120997800 U CN 202120997800U CN 215645010 U CN215645010 U CN 215645010U
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- 239000000758 substrate Substances 0.000 claims description 8
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- 230000009286 beneficial effect Effects 0.000 description 1
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Abstract
The utility model discloses an antenna structure and an electronic deviceThe antenna structure comprises a closed loop antenna main body and a circuit main board, wherein an antenna feed-in point is arranged on the closed loop antenna main body, the end part of the closed loop antenna main body is connected with the circuit main board, and a grounding point is connected between the closed loop antenna main body and the circuit main board; the grounding points at least comprise a first grounding point and a second grounding point, and the length of the closed loop antenna body between the first grounding point and the antenna feed point is equal to that of the antenna body
The length of the closed loop antenna body between the second ground point and the antenna feed point is equal to
f1Operating frequency for the first antenna, f2For the second antenna operating frequency, f1≠f2(ii) a The closed loop antenna is grounded with the main board, the antenna length between the grounding point and the antenna feed point corresponds to different resonances by arranging the grounding point, the antenna structure can have multiple frequency bands and high efficiency under the condition of not opening a metal groove, the manufacturing difficulty is reduced, and the manufacturing cost is saved.
Description
Technical Field
The utility model relates to the field of antennas, in particular to an antenna structure and electronic equipment.
Background
With the progress of society and the development of science and technology, the becket watch is more and more liked by people, people also more and more demand the becket watch, and the antenna is the essential element of becket watch, can realize the locate function.
At present, users have more and more requirements on positioning systems and more strict requirements on precision, and under the background, a multifunctional antenna capable of simultaneously supporting the use of multiple frequency bands becomes a development trend. The antenna is usually integrated in the annular metal shell of the existing watch, and the equivalent area of the antenna is improved by slotting on the end face of the annular metal shell, so that the characteristics of the antenna are improved, and the antenna signal can be transmitted more efficiently. However, although this method can improve the antenna efficiency to a certain extent, since the size of the annular metal case of the wristwatch is limited, accurate slotting on the annular metal case is not easy, the requirement for manufacturing accuracy is high, and the manufacturing cost is high.
SUMMERY OF THE UTILITY MODEL
The utility model aims to: an antenna structure is provided, which can realize the efficient transmission of the antenna without slotting on the annular metal shell;
another object of the utility model is: provided is an electronic device which does not require grooving of an annular metal case with high accuracy, requires low manufacturing accuracy, and is low in cost.
In order to realize one or more of the purposes of the utility model, the technical proposal of the utility model is that: in a first aspect, the present invention provides an antenna structure, including a closed loop antenna main body and a circuit main board, where an antenna feed point is arranged on the closed loop antenna main body, an end of the closed loop antenna main body is connected to the circuit main board, and a ground point is connected between the closed loop antenna main body and the circuit main board;
the grounding points at least comprise a first grounding point and a second grounding point, and the length of the closed loop antenna main body between the first grounding point and the antenna feed point is equal to that of the antenna main body between the first grounding point and the antenna feed point
The length of the closed loop antenna body between the second ground point and the antenna feed point is equal to
F is1For the first antenna operating frequency, said2For the second antenna operating frequency, f1≠f2。
In a preferred embodiment, the first antenna operating frequency is a bluetooth antenna operating frequency, and the second antenna operating frequency is a GPS-L1 antenna operating frequency.
In a preferred embodiment, the grounding points further include a third grounding point, and the distance between the third grounding point and the antenna feeding point is equal to the distance between the third grounding point and the antenna feeding point
f3Is the third antenna operating frequency, which is the GPS-L5 antenna operating frequency.
In a preferred embodiment, the grounding point is a grounding pad or a motherboard spring pin or a screw.
In a preferred embodiment, the grounding points are located on the same plane of the circuit main board.
In a preferred embodiment, the circuit board includes a substrate, one surface of the substrate is connected to the closed loop antenna main body, and the other surface of the substrate is provided with a metal ground, and the ground point is connected to the metal ground.
In a preferred embodiment, the circuit board is a printed circuit board.
In a preferred embodiment, the circuit board closes a port of the closed loop antenna body, and an outer periphery of the circuit board does not exceed an outer periphery of the closed loop antenna body.
In a second aspect, the present invention further provides an electronic device, which includes a housing and the antenna structure according to any one of the first aspect, where the antenna structure is accommodated in the housing.
Compared with the prior art, the utility model has the advantages that: the antenna structure comprises a closed loop antenna main body and a circuit main board, wherein an antenna feed point is arranged on the closed loop antenna main body, the end part of the closed loop antenna main body is connected with the circuit main board, and a grounding point is connected between the closed loop antenna main body and the circuit main board; the grounding points at least comprise a first grounding point and a second grounding point, and the length of the closed loop antenna body between the first grounding point and the antenna feed point is equal to that of the antenna body
The length of the closed loop antenna body between the second ground point and the antenna feed point is equal to
f1Operating frequency for the first antenna, f2For the second antenna operating frequency, f1≠f2(ii) a The closed loop antenna is grounded with the main board, and the antenna length between the grounding point and the antenna feed point is corresponding through the position arrangement of the grounding pointDifferent resonance can realize that the antenna structure has multiple frequency bands and high efficiency under the condition of not opening a metal groove, thereby reducing the manufacturing difficulty and saving the manufacturing cost.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an antenna structure provided in embodiment 1 of the present invention;
fig. 2 is a VSWR graph of an antenna standing wave of the antenna structure provided in embodiment 1 of the present invention;
wherein: 1. a closed loop antenna body; 2. a circuit main board; 3. an antenna feed point; 4. a ground point; 41. a first ground point; 42. a second ground point; 43. a third ground point.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As described in the background art, in the prior art, an antenna is usually integrated in an annular metal shell of a wristwatch, and a slot is formed in an end surface of the annular metal shell to increase an equivalent area of the antenna, so as to improve characteristics of the antenna and enable an antenna signal to be transmitted more efficiently. However, although the method can improve the antenna efficiency to a certain extent, because the size of the annular metal shell of the watch is limited, precise grooving on the annular metal shell is not easy, the requirement on manufacturing precision is high, the manufacturing cost is high, the antenna needs to be connected with the main board through parts such as transmission lines, the number of parts is large, and the part cost is high.
In order to solve the above problems, the embodiment of the present application creatively provides a mode of grounding the metal ring antenna and the main board, so that the antenna efficiency is realized, meanwhile, parts such as transmission lines are saved, accurate slotting on the annular metal shell is not needed, the manufacturing difficulty is effectively reduced, and the manufacturing cost is reduced.
Example 1: the present embodiment provides an antenna structure, as shown in fig. 1, including a closed loop antenna main body 1 and a circuit main board 2, where the closed loop antenna main body 1 is provided with an antenna feed point 3, an end of the closed loop antenna main body 1 is connected to the circuit main board 2, and a ground point 4 is connected between the closed loop antenna main body 1 and the circuit main board 2; the grounding point 4 at least comprises a first grounding point 41 and a second grounding point 42, and the length of the main body of the closed loop antenna between the first grounding point 41 and the antenna feeding point 3 is equal to
The length of the closed loop antenna body between the second ground point 42 and the antenna feed point 3 is equal to
f1Operating frequency for the first antenna, f2For the second antenna operating frequency, f1≠f2. In this embodiment, the closed loop antenna body 1 is a metal ring, and the antenna feed point 3 and the circuit board 1 are respectively disposed on two end surfaces of the closed loop antenna body 1.
In a preferred embodiment, the first antenna operating frequency is a bluetooth antenna operating frequency and the second antenna operating frequency is a GPS-L1 antenna operating frequency. The first antenna is a Bluetooth antenna, the second antenna is a GPS-L1 antenna, and the working frequency of the Bluetooth antenna is 2400-2500MHz
(λ is the antenna wavelength, c is the speed of light, f is the antenna frequency),
the required length of the bluetooth antenna, i.e. the length of the closed loop antenna body between the first grounding point 41 and the antenna feed point 3, is calculated, so as to determine the linear distance between the first grounding point 41 and the antenna feed point 3. Similarly, the GPS-L1 antenna has an operating frequency of 1575.42MHz based on
(λ is the antenna wavelength, c is the speed of light, f is the antenna frequency),
the required length of the GPS-L1 antenna, i.e. the length of the closed loop antenna body between the second grounding point 42 and the antenna feed point 3, is calculated to determine the linear distance between the second grounding point 42 and the antenna feed point 3. The circuit main board 2 and the closed loop antenna main body 1 are directly grounded, the first grounding point 41 and the second grounding point 42 are arranged on the closed loop antenna main body 1, so that the lengths of the closed loop antenna main body 1 among the first grounding point 41, the second grounding point 42 and the antenna feed point 3 respectively correspond to the resonance of the Bluetooth antenna and the GPS-L1 antenna, and the antenna structure can simultaneously have the Bluetooth antenna frequency band and the GPS-L1 antenna frequency band without slotting on the closed loop antenna main body 1 and has high efficiency.
In a preferred embodiment, the grounding point 4 further comprises a third grounding point 43, and the third grounding point 43 is spaced from the antenna feeding point 3 by a distance equal to
f3The third antenna operating frequency is the GPS-L5 antenna operating frequency. Because the GPS-L1 is a mainly used GPS antenna, but the precision is not high when the GPS-L1 frequency band is limited by the technology of the GPS-L3578, the GPS-L5 antenna and the GPS-L1 antenna are combined to supplement the L1 frequency band of the GPS-L1 antenna, the GPS positioning precision is increased, and the GPS positioning is faster and more accurate. The working frequency of the GPS-L5 antenna is 1176MHz, and the GPS-L5 antenna is based on
(λ is the antenna wavelength, c is the speed of light, f is the antenna frequency),
the required length of the GPS-L5 antenna, i.e. the length of the closed loop antenna body between the third grounding point 43 and the antenna feed point 3, is calculated to determine the linear distance between the third grounding point 43 and the antenna feed point 3.
In a preferred embodiment, the grounding point 4 is a grounding pad or a motherboard spring pin or a screw. In this embodiment, the grounding point 4 is preferably a grounding pad, that is, a grounding pad is formed by welding between the closed loop antenna body 1 and the circuit main board 2, so that the process is simple, and the cost of parts is saved.
In a preferred embodiment, the grounding point 4 is located on the same side of the circuit board 2 for ease of manufacturing.
In a preferred embodiment, the circuit board 2 includes a substrate, one surface of the substrate is connected to the closed loop antenna body 1, the other surface is provided with a metal ground, and the grounding point 4 is connected to the metal ground.
In a preferred embodiment, the circuit board 2 is a printed circuit board.
In a preferred embodiment, the circuit board 2 encloses a port of the antenna body 1, and the outer periphery of the circuit board 2 does not exceed the outer periphery of the antenna body 1, so that the circuit board 2 can be stably connected to the antenna body 1, and the outer periphery of the circuit board 2 exceeds the outer edge of the antenna body 1, which results in poor appearance and waste of board materials.
The antenna structure provided by the embodiment comprises a closed loop antenna main body and a circuit main board, wherein an antenna feed point is arranged on the closed loop antenna main body, the end part of the closed loop antenna main body is connected with the circuit main board, and a grounding point is connected between the closed loop antenna main body and the circuit main board; in this embodiment, the preferred grounding points include a first grounding point, a second grounding point and a third grounding point, and the length of the main body of the closed loop antenna between the first grounding point and the antenna feed pointDegree equal to
The length of the closed loop antenna body between the second ground point and the antenna feed point is equal to
The length of the closed loop antenna body between the third ground point and the antenna feed point is equal to
f1For the first antenna operating frequency, the preferred first antenna operating frequency in this embodiment is the bluetooth antenna operating frequency, f2For the second antenna operating frequency, the preferred second antenna operating frequency in this embodiment is the GPS-L1 antenna frequency, f3In this embodiment, the third antenna operating frequency is preferably the GPS-L5 antenna frequency; the closed loop antenna is grounded with the main board, the antenna length between the grounding point and the antenna feed point corresponds to different resonances by arranging the grounding point, the multi-band and high efficiency of the antenna structure can be realized under the condition of not opening a metal groove, and the V1 arm test result of the antenna structure is shown in table 1, so that the manufacturing difficulty is reduced, and the manufacturing cost is saved.
Example 2: the present embodiment provides an electronic device, including a housing and the antenna structure provided in embodiment 1, where the antenna structure is accommodated in the housing.
Illustratively, the electronic device is a watch, the housing includes a watch face and a case enclosing the watch face, and the antenna structure is disposed within the watch face. The watch dial is also internally provided with a movement. The watch dial consists of a screen and a dial main body, and the antenna structure and the movement are arranged between the watch dial and the screen.
Because the screen and the circuit main board need to be grounded, one of the grounding points can be the grounding point of the screen FPC and the circuit main board. Illustratively, the third grounding point is a grounding point between the screen FPC and the circuit main board.
The electronic device provided by the above embodiment and the antenna structure embodiment belong to the same concept, that is, the electronic device is based on the antenna structure, and specific implementation processes and beneficial effects thereof are described in detail in the antenna structure embodiment and are not described herein again.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "inside", "outside", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
It should be understood that the above-mentioned embodiments are only illustrative of the technical concepts and features of the present invention, and are intended to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the scope of the present invention. All modifications made according to the spirit of the main technical scheme of the utility model are covered in the protection scope of the utility model.
Claims (9)
1. An antenna structure is characterized by comprising a closed loop antenna main body and a circuit main board, wherein an antenna feed point is arranged on the closed loop antenna main body, the end part of the closed loop antenna main body is connected with the circuit main board, and a grounding point is connected between the closed loop antenna main body and the circuit main board;
the grounding points at least comprise a first grounding point and a second grounding point, and the length of the closed loop antenna main body between the first grounding point and the antenna feed point is equal to that of the antenna main body between the first grounding point and the antenna feed point
The length of the closed loop antenna body between the second ground point and the antenna feed point is equal to
F is1For the first antenna operating frequency, said2For the second antenna operating frequency, f1≠f2。
2. The antenna structure of claim 1, wherein the first antenna operating frequency is a bluetooth antenna operating frequency and the second antenna operating frequency is a GPS-L1 antenna operating frequency.
3. The antenna structure of claim 2, wherein the grounding points further comprise a third grounding point, the third grounding point being spaced apart from the antenna feed point by a distance equal to
f3Is the third antenna operating frequency, which is the GPS-L5 antenna operating frequency.
4. The antenna structure according to any of claims 1-3, characterized in that the ground point is a ground pad or a motherboard spring foot or a screw.
5. The antenna structure according to claim 4, characterized in that the grounding point is located on the same face of the circuit main board.
6. The antenna structure according to claim 1, wherein the circuit board includes a substrate, one surface of the substrate is connected to the closed loop antenna body, and the other surface of the substrate is provided with a metal ground, and the ground is connected to the metal ground.
7. The antenna structure according to claim 1 or 6, characterized in that the circuit board is a printed circuit board.
8. The antenna structure according to claim 7, wherein the circuit board closes a port portion of the closed loop antenna body, and an outer periphery of the circuit board does not exceed an outer periphery of the closed loop antenna body.
9. An electronic device comprising a housing and an antenna structure according to any one of claims 1-8, the antenna structure being housed within the housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120997800.0U CN215645010U (en) | 2021-05-11 | 2021-05-11 | Antenna structure and electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120997800.0U CN215645010U (en) | 2021-05-11 | 2021-05-11 | Antenna structure and electronic equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215645010U true CN215645010U (en) | 2022-01-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120997800.0U Active CN215645010U (en) | 2021-05-11 | 2021-05-11 | Antenna structure and electronic equipment |
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|---|---|
| CN (1) | CN215645010U (en) |
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- 2021-05-11 CN CN202120997800.0U patent/CN215645010U/en active Active
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