CN214754148U - Antenna device and electronic apparatus - Google Patents
Antenna device and electronic apparatus Download PDFInfo
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- CN214754148U CN214754148U CN202120853413.XU CN202120853413U CN214754148U CN 214754148 U CN214754148 U CN 214754148U CN 202120853413 U CN202120853413 U CN 202120853413U CN 214754148 U CN214754148 U CN 214754148U
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Abstract
The application technology discloses antenna device and electronic equipment, antenna device includes: a circuit board having opposing first and second surfaces; an antenna ground located on the first surface; the metal layer is located on the second surface and comprises a plurality of antenna radiators, each antenna radiator is provided with an antenna feed point, and at least one antenna radiator is provided with two antenna feed points. In the antenna device, the metal layer is provided with the plurality of antenna radiating bodies, and for the antenna radiating bodies with two antenna feed points, the two antenna feed points can generate different polarization directions, so that the antenna radiating bodies are equivalent to two antenna units, thereby reducing the size of the antenna device, reducing the installation area of the antenna device, facilitating the miniaturization and light and thin design of electronic equipment, and saving the internal installation space of the electronic equipment and facilitating the integration of the electronic equipment with more other functional electronic elements due to the small installation area of the antenna device.
Description
Technical Field
The present application relates to the field of electronic devices, and more particularly, to an antenna device and an electronic device.
Background
With the continuous development of science and technology, more and more electronic devices with communication functions are widely applied to daily life and work of people, bring great convenience to the daily life and work of people, and become an indispensable important tool for people at present.
The core component of the electronic equipment for realizing the communication function is an antenna device. The conventional antenna device has a large mounting area, and in order to facilitate carrying and using, the electronic device needs to be miniaturized and designed to be light and thin, and a smaller size antenna device is required. Moreover, as the functions of the electronic device are increased, the number of the main board integrated electronic components is increased, and the installation space of the antenna device is further reduced. Therefore, how to design an antenna device with a smaller mounting area is an urgent problem to be solved.
SUMMERY OF THE UTILITY MODEL
In view of this, the present application provides an antenna device and an electronic device, and the scheme is as follows:
an antenna device, comprising:
a circuit board having opposing first and second surfaces;
an antenna ground located on the first surface;
the metal layer is located on the second surface and comprises a plurality of antenna radiators, each antenna radiator is provided with an antenna feed point, and at least one antenna radiator is provided with two antenna feed points.
Preferably, in the antenna device, the antenna radiator is rectangular, and the antenna feed point is located on a side of the rectangle;
in the antenna radiator with the two antenna feed points, the two antenna feed points are respectively positioned on two adjacent side edges of the antenna radiator.
Preferably, in the above antenna device, the antenna feed point is located at a midpoint of the side where the antenna feed point is located.
Preferably, in the above antenna device, the side of the rectangle is 5mm to 15 mm.
Preferably, in the above antenna device, the antenna feed point is connected to a feed line, and the feed line is used for connecting an antenna chip.
Preferably, in the above antenna device, the circuit board includes at least two sub-dielectric layers, and the feeding line is located between two adjacent sub-dielectric layers.
Preferably, in the antenna device, a distance between centers of the two antenna radiators does not exceed a predetermined distance
To
Wherein λ is a wavelength of the antenna device communication signal.
Preferably, in the antenna device, the metal layer has two of the antenna radiators;
one of the antenna radiators has one of the antenna feed points, and the antenna radiator is a transmitting and receiving antenna unit;
one of the antenna radiators has two of the antenna feed points, and the antenna radiator includes two receiving antenna elements.
The present application further provides an electronic device, which includes:
a body;
an antenna device disposed in the body, the antenna device comprising: a circuit board having opposing first and second surfaces; an antenna ground located on the first surface; a metal layer on the second surface, the metal layer including a plurality of antenna radiators having antenna feed points, at least one of the antenna radiators having two antenna feed points
The communication chip is connected with the antenna feed points of the antenna radiators through a plurality of feed lines respectively, and is used for radiating a transmitting signal through the antenna radiators and receiving a feedback signal through the antenna radiators so that the electronic device determines the distance or/and angle of a target device relative to the electronic device.
As can be seen from the above description, in the antenna device and the electronic apparatus provided in the technical solution of the present application, the antenna device includes: a circuit board having opposing first and second surfaces; an antenna ground located on the first surface; the metal layer is located on the second surface and comprises a plurality of antenna radiators, each antenna radiator is provided with an antenna feed point, and at least one antenna radiator is provided with two antenna feed points. In the antenna device, the metal layer is provided with the plurality of antenna radiating bodies, and for the antenna radiating bodies with two antenna feed points, the two antenna feed points can generate different polarization directions, so that the antenna radiating bodies are equivalent to two antenna units, thereby reducing the size of the antenna device, reducing the installation area of the antenna device, facilitating the miniaturization and light and thin design of electronic equipment, and saving the internal installation space of the electronic equipment due to the small installation area of the antenna device, and facilitating the integration of the electronic equipment with more other functional electronic elements.
Drawings
In order to more clearly illustrate the embodiments of the present application or technical solutions in related arts, the drawings used in the description of the embodiments or prior arts will be briefly introduced below, it is obvious that the drawings in the following description are only embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
The structures, proportions, and dimensions shown in the drawings and described in the specification are for illustrative purposes only and are not intended to limit the scope of the present disclosure, which is defined by the claims, but rather by the claims, it is understood that these drawings and their equivalents are merely illustrative and not intended to limit the scope of the present disclosure.
Fig. 1 is a plan view of a conventional antenna device;
fig. 2 is a top view of an antenna device according to an embodiment of the present disclosure;
fig. 3 is a cross-sectional view of the antenna device in the direction a-a' shown in fig. 2.
Detailed Description
Embodiments of the present application will now be described more fully hereinafter with reference to the accompanying drawings, in which embodiments of the application are shown, and in which it is to be understood that the embodiments described are merely illustrative of some, but not all, of the embodiments of the application. 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 application.
In order to make the aforementioned objects, features and advantages of the present application more comprehensible, the present application is described in further detail with reference to the accompanying drawings and the detailed description.
When the electronic equipment is used for distance measurement and positioning, the antenna device needs to be provided with three antenna units for distance measurement and positioning by utilizing the triangulation positioning principle. In the embodiment of the present application, the antenna device may be a UWB (ultra wide band), and the UWB antenna device transmits data using nanosecond-level non-sinusoidal narrow pulses, so that the occupied frequency spectrum range is wide.
It should be noted that the antenna device in the embodiment of the present application is not limited to the UWB antenna device, the antenna device serves as a passive transmitting and receiving element, and when the antenna core sheet provides a positive acoustic wave signal and can process the positive acoustic wave signal, the antenna device may transmit data using the positive acoustic wave signal.
As shown in fig. 1, fig. 1 is a plan view of a conventional antenna device, which includes: the antenna comprises a circuit board 11 and a plurality of independent antenna radiators 12 arranged on the circuit board 11, wherein each antenna radiator 12 is provided with an antenna feed point 13, the antenna feed points 13 of the antenna radiators 12 are connected with a bonding pad 15 through feed lines 14, and the bonding pad 15 is used for binding an antenna chip.
In order to achieve triangulation, which makes the antenna device have ranging and positioning functions, the antenna device shown in fig. 1 has three antenna radiators 12, each antenna radiator 12 has one antenna feed point 13 for feeding signals, the three antenna radiators 12 are respectively used as one antenna unit, and the three antenna units perform triangulation and ranging.
In the mode shown in fig. 1, three antenna radiators 12 are required, and triangulation and ranging are performed using the three antenna radiators 12. The central distance between each two of the three antenna radiators 12 needs to be at least
λ is the wavelength of the communication signal of the antenna device. The current 5G communication requirement greatly compresses the installation space of the antenna, and the antenna device shown in fig. 1 has a large area and a large installation area, which is inconvenient for the miniaturization and light and thin design of electronic equipment.
In order to solve the above problem, an embodiment of the present application provides an antenna apparatus, where two antenna feeding points are disposed on at least one antenna radiator, and each antenna feeding point corresponds to a radiation field type of antenna polarization, so that one antenna radiator can be equivalent to two antenna units, the number of the antenna radiators is reduced, the area of the antenna apparatus is reduced, the installation area of the antenna apparatus is reduced, and the electronic device is convenient for miniaturization and light-weight design, and because the installation space is saved, the electronic device has more installation spaces inside, so as to integrate electronic components with other functions. And the dual-polarized radiation pattern produced by the antenna radiator with two feeds has good antenna isolation.
As shown in fig. 2 and fig. 3, fig. 2 is a top view of an antenna device according to an embodiment of the present application, and fig. 3 is a cross-sectional view of the antenna device shown in fig. 2 along a direction a-a', the antenna device including:
a circuit board 21, the circuit board 21 having opposing first and second surfaces S1 and S2;
an antenna ground 22 located on the first surface S1;
the metal layer 23 is located on the second surface, the metal layer 23 includes a plurality of antenna radiators 231, the antenna radiators 231 have antenna feed points 24, and at least one of the antenna radiators 231 has two antenna feed points 24.
In the antenna device shown in fig. 2 and 3, the metal layer 23 has two antenna radiators 231, and the number of the antenna radiators 231 in the metal layer 23 may be set according to communication requirements.
In order to improve the adhesion stability of the antenna radiator on the surface of the circuit board 21, the metal layer may include a first metal layer and a second metal layer, the first metal layer is located between the circuit board 21 and the second metal layer, the first metal layer has better adhesion on the surface of the circuit board 21, and the adhesion stability of the second metal layer can be ensured through the transition of the first metal layer. The second metal layer may be a metal layer. The metal layer 23 may be formed on the second surface S2 of the circuit board 21 by electroplating, electroless plating, deposition, or the like, and then the metal layer 23 may be patterned by an etching process to form a plurality of separated antenna radiators 231.
In order to improve the adhesion stability of the antenna radiator on the surface of the circuit board 21, the second surface of the circuit board 21 may also be provided with a groove for arranging the antenna radiator 12.
In the antenna device, the metal layer 23 has two antenna radiators 231, one antenna radiator 231 has one antenna feed point 24, and the antenna radiator 231 is a transmitting and receiving antenna unit, and can be used for transmitting signals and also receiving signals; one antenna radiator 231 has two antenna feed points 24, and the two antenna feed points 24 can make the same antenna radiator 231 have two different polarization directions, and the two polarization directions have a phase difference of 90 °, which is equivalent to two different receiving positions, so that the antenna radiator 231 includes two receiving antenna units. Thus, through the two antenna radiators 231, which are equivalent to three antenna units, the triangulation location and the ranging are realized.
The antenna device according to the embodiment of the present application includes two antenna radiators 231 for triangulation and ranging, where the two antenna radiators 231 are a first antenna radiator a and a second antenna radiator B, respectively. The first antenna radiator a has one antenna feed point, and the second antenna radiator B has two antenna feed points. The second antenna radiator B is provided with two antenna feed points, can be equivalent to two antenna units, has two different polarization directions and corresponds to two phase parameters, and the first antenna radiator A is provided with one antenna feed point, has one polarization direction and corresponds to one phase parameter, so that the second antenna radiator B can be equivalent to three antenna units through the two antenna radiators, has three phase parameters and is used for realizing triangular positioning and distance measurement.
When the triangulation location and the test are carried out, the first antenna radiator A is a transmitting and receiving antenna unit, the second antenna radiator B is two receiving antenna units, the transmitting and receiving antenna units send signals to a base station, the base station feeds back the signals, the antenna 123 receives the signals fed back by the base station, and the triangulation location and the distance measurement are realized based on the different phases of the three antenna units.
When the antenna device is used for triangulation and ranging, only two antenna radiators 231 are needed, and compared with the antenna device shown in fig. 1, one antenna radiator and a connection line needed by the antenna radiator are reduced, so that the installation area of the antenna device is reduced 1/3.
It should be noted that the antenna device of the present application has at least two antenna radiators 231 for triangulation and ranging, and the metal layer 23 is not limited to include only the first antenna radiator a and the second antenna radiator B, and may include antenna radiators 231 with other communication functions.
As shown in fig. 2, the antenna radiator 231 is a rectangle, and the antenna feed point 24 is located on a side of the rectangle; in the antenna radiator 231 with two antenna feed points, the two antenna feed points 24 are respectively located on two adjacent side edges of the antenna radiator 231, the two adjacent side edges are perpendicular to each other, so that an orthogonal double-feed structure is realized, the same antenna radiator 321 can generate a double-antenna polarized radiation field pattern, and the polarization directions generated by the two antenna feed points 24 in the same antenna radiator 321 have a phase difference of 90 degrees, so that the antenna radiator 231 with the two antenna feed points 24 is equivalent to two antenna units.
The antenna feed point 24 may be located at the midpoint of the side of the rectangle to facilitate the layout and circuit connection of the antenna feed point 24. In the embodiment, the antenna radiator 231 may be rectangular or square.
Wherein the side length of the rectangle is 5mm to 15 mm. Within this size range, the communication requirements of triangulation and ranging can be achieved.
The rectangle has first and second opposite parallel sides and third and fourth opposite parallel sides. The dimensions of the different antenna radiators may be the same or different.
When the metal layer 23 only includes the first antenna radiator a and the second antenna radiator B for triangulation and ranging, in order to carry the first antenna radiator a and the second antenna radiator B through the circuit board 21 of a smaller size, the first sides of the two rectangles are set to be arranged in parallel relatively, and the center lines of the two first sides coincide, so that the circuit board 21 is used to set the binding portion of the first antenna radiator a and the second antenna radiator B to be the smallest size in the extending direction parallel to the first sides, if the lengths of the two first sides are the same, the size in the extending direction is the length of the first side, and if the lengths of the first sides of the two rectangles are different, the binding portion is in the length of the larger one of the two first sides in the extending direction.
In the antenna device according to the embodiment of the present application, the antenna feed point 24 is connected to a feed line 25, and the feed line 25 is used for connecting an antenna chip. The antenna chip is connected with the antenna feed point 24 through a feed line 25 to realize the receiving and transmitting control of signals. The second surface S2 of the circuit board 21 has pads 26 for bonding an antenna chip. The feed line 25 is connected to the pad 26. The antenna chip may be a UWB communication chip, and obviously, the antenna chip may also be another type of antenna chip.
In the manner shown in fig. 3, the circuit board 21 includes at least two sub-dielectric layers 211, and the feeding line 25 is located between two adjacent sub-dielectric layers 211. In this manner, the feed line 25 is in electrical contact with the antenna feed point 24 through a via.
In other embodiments, the feed line 25 may also be provided directly at the second surface S2.
This applicationIn the antenna device of the embodiment, the distance between the centers of the two antenna radiators is not more than
To
Wherein λ is the wavelength of the communication signal of the antenna device,
the antenna has the advantages of being about 12.5mm, working frequency of 6GHz-8GHz and bandwidth of 500M, and meeting the requirements of triangulation location and distance measurement.
As shown in fig. 2, in the antenna device, the circuit board 21 includes a bonding portion 31 and a trace portion 32. The antenna radiators 321 are all located on the binding portion 31, one end of the routing portion 32 is connected to the binding portion 31, the other end is far away from the binding portion 31, and the end has a pad 26. The antenna feed line 26 extends to the land 16 based on the trace portion 32, and is connected to the land 26. The width of the trace portion 32 is much smaller than the side length of the rectangular antenna radiator 321.
In the antenna device according to the embodiment of the present application, the circuit board 21 may be a PCB (printed circuit board) or an FPC (flexible printed circuit). The circuit board 21 may be an FPC, so that the wiring portion 32 with a small width can be bent or folded based on the wiring requirement.
Based on the foregoing embodiment, another embodiment of the present application further provides an electronic device, including:
a body;
an antenna device disposed in the body, the antenna device comprising: a circuit board having opposing first and second surfaces; an antenna ground located on the first surface; a metal layer on the second surface, the metal layer including a plurality of antenna radiators having antenna feed points, at least one of the antenna radiators having two antenna feed points
The communication chip is connected with the antenna feed points of the antenna radiators through a plurality of feed lines respectively, and is used for radiating a transmitting signal through the antenna radiators and receiving a feedback signal through the antenna radiators so that the electronic device determines the distance or/and angle of a target device relative to the electronic device.
In the electronic device according to the embodiment of the present application, the antenna apparatus is the antenna apparatus according to the above embodiment, and the implementation manner thereof may refer to the above embodiment, which is not described again in this embodiment.
The body can be a mobile phone body, and at the moment, the electronic equipment is a mobile phone. The body can also be a tablet personal computer body, and at the moment, the electronic equipment is a tablet personal computer. The body can also be intelligent wearing equipment body, like intelligent wrist-watch, this moment electronic equipment is intelligent wrist-watch. It should be noted that the electronic device is not limited to a mobile phone, a tablet computer, or an intelligent wearable device, and may be any electronic device having a wireless communication function.
The embodiments in the present description are described in a progressive manner, or in a parallel manner, or in a combination of a progressive manner and a parallel manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments can be referred to each other. For the electronic device disclosed in the embodiment, since it corresponds to the antenna device disclosed in the embodiment, the description is relatively simple, and the relevant points can be referred to the description of the corresponding parts of the antenna device.
It should be noted that in the description of the present application, it is to be understood that the terms "upper", "lower", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only used for convenience in describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be configured and operated in a specific orientation, and thus, should not be construed as limiting the present application. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present.
It is further noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that an article or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such article or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in an article or device that comprises the element.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (9)
1. An antenna device, comprising:
a circuit board having opposing first and second surfaces;
an antenna ground located on the first surface;
the metal layer is located on the second surface and comprises a plurality of antenna radiators, each antenna radiator is provided with an antenna feed point, and at least one antenna radiator is provided with two antenna feed points.
2. The antenna device of claim 1, wherein the antenna radiator is rectangular, and the antenna feed is located on a side of the rectangle;
in the antenna radiator with the two antenna feed points, the two antenna feed points are respectively positioned on two adjacent side edges of the antenna radiator.
3. The antenna device according to claim 2, wherein the antenna feed point is located at a midpoint of the side.
4. The antenna device according to claim 2, characterized in that the sides of the rectangle are 5mm to 15 mm.
5. The antenna device according to claim 1, wherein a feed line is connected to the antenna feed point, the feed line being configured to connect to an antenna chip.
6. The antenna device according to claim 5, wherein the circuit board comprises at least two sub-dielectric layers, and the feed line is located between two adjacent sub-dielectric layers.
7. The antenna device of claim 1, wherein the distance between the centers of the two antenna radiators does not exceed the center distance of the two antenna radiators
mm to
mm；
Wherein λ is a wavelength of the antenna device communication signal.
8. The antenna device according to claim 1, wherein the metal layer has two of the antenna radiators;
one of the antenna radiators has one of the antenna feed points, and the antenna radiator is a transmitting and receiving antenna unit;
one of the antenna radiators has two of the antenna feed points, and the antenna radiator includes two receiving antenna elements.
9. An electronic device, characterized in that the electronic device comprises:
a body;
an antenna device disposed in the body, the antenna device comprising: a circuit board having opposing first and second surfaces; an antenna ground located on the first surface; a metal layer on the second surface, the metal layer including a plurality of antenna radiators having antenna feed points, at least one of the antenna radiators having two antenna feed points
The communication chip is connected with the antenna feed points of the antenna radiators through a plurality of feed lines respectively, and is used for radiating a transmitting signal through the antenna radiators and receiving a feedback signal through the antenna radiators so that the electronic device determines the distance or/and angle of a target device relative to the electronic device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120853413.XU CN214754148U (en) | 2021-04-23 | 2021-04-23 | Antenna device and electronic apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120853413.XU CN214754148U (en) | 2021-04-23 | 2021-04-23 | Antenna device and electronic apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214754148U true CN214754148U (en) | 2021-11-16 |
Family
ID=78612752
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120853413.XU Active CN214754148U (en) | 2021-04-23 | 2021-04-23 | Antenna device and electronic apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214754148U (en) |
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2021
- 2021-04-23 CN CN202120853413.XU patent/CN214754148U/en active Active
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