CN113964518A

CN113964518A - Antenna device and electronic equipment

Info

Publication number: CN113964518A
Application number: CN202111220198.0A
Authority: CN
Inventors: 宋博
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2021-10-20
Filing date: 2021-10-20
Publication date: 2022-01-21
Also published as: WO2023066217A1

Abstract

The application discloses antenna device and electronic equipment, wherein, antenna device includes: a substrate; the antenna body is arranged on the substrate and can work in a first frequency band; the antenna comprises N directors, wherein the N directors are arranged on a substrate and are sequentially arranged on a first side of an antenna main body at intervals, one end of each director is grounded, the difference value between the 1/4 wavelength of a first frequency band and the length of each director is greater than 0 and smaller than a first specific value, N is a positive integer, and the first specific value is a positive number. This application embodiment has reduced the length of each director through the one end ground connection with each director, and then helps reducing antenna device's overall dimension, reduces the required space of antenna device installation.

Description

Antenna device and electronic equipment

Technical Field

The application belongs to the technical field of antennas, and particularly relates to an antenna device and electronic equipment.

Background

As is well known, antenna devices have been widely used in various types of electronic equipment. In some application scenarios, the electronic device may require the antenna device to have a directional radiation function, and the application of the directional antenna can better meet the requirement. However, the conventional directional antenna is often large in size, occupies a large installation space, and further causes high design difficulty of the electronic device.

Disclosure of Invention

The application aims at providing an antenna device and electronic equipment to solve the problems that the size of the existing leading antenna is often large and the occupied installation space is large.

In order to solve the technical problem, the present application is implemented as follows:

in a first aspect, an embodiment of the present application provides an antenna apparatus, including:

a substrate;

the antenna body is arranged on the substrate and can work in a first frequency band;

the antenna comprises N directors, wherein the N directors are arranged on a substrate and are sequentially arranged on a first side of an antenna main body at intervals, one end of each director is grounded, the difference value between the 1/4 wavelength of a first frequency band and the length of each director is greater than 0 and smaller than a first specific value, N is a positive integer, and the first specific value is a positive number.

In a second aspect, an embodiment of the present application provides an electronic device, including a device main body and the antenna apparatus shown in the first aspect;

the camera decoration piece that the equipment main part includes, the multiplexing base plate as antenna device of camera decoration piece.

The antenna device provided by the embodiment of the application comprises a substrate, an antenna body and N directors, wherein the antenna body and the N directors are arranged on the substrate, the N directors are arranged on the first side of the antenna body at intervals in sequence, the antenna body can work in a first frequency band, one end of each director is grounded, the difference value between the 1/4 wavelength of the first frequency band and the length of each director is greater than 0 and smaller than a first specific value, N is a positive integer, and the first specific value is a positive number. This application embodiment has reduced the length of each director through the one end ground connection with each director, and then helps reducing antenna device's overall dimension, reduces the required space of antenna device installation.

Additional aspects and advantages of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the present application.

Drawings

The above and/or additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic structural diagram of an antenna device according to an embodiment of the present application;

FIG. 2 is a schematic view of one configuration of the substrate, antenna body and directors after assembly;

FIG. 3 is a schematic view of another configuration of the substrate, antenna body and directors after assembly;

fig. 4 is a schematic structural diagram of an antenna device according to an embodiment of the present application;

fig. 5 is a schematic structural diagram of an antenna device according to an embodiment of the present application;

fig. 6 is a schematic structural diagram of an antenna device according to an embodiment of the present application;

fig. 7 is a schematic structural diagram of an antenna device according to an embodiment of the present application;

fig. 8 is a schematic structural diagram of an antenna device according to an embodiment of the present application;

fig. 9 is a schematic structural diagram of an antenna device according to an embodiment of the present application;

fig. 10 is an effect diagram of the antenna device provided in the embodiment of the present application when applied to an electronic device;

fig. 11 is a schematic structural diagram of an electronic device provided in an embodiment of the present application.

The figures show that: substrate 110, opening 111, antenna body 120, impedance matching circuit 121, feed 122, director 130, radiation branch 140, reflector 150, device body 200, camera trim 210.

Detailed Description

Reference will now be made in detail to the embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present 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.

The features of the terms first and second in the description and in the claims of the present application may explicitly or implicitly include one or more of such features. In the description of the present application, "a plurality" means two or more unless otherwise specified. In addition, "and/or" in the specification and claims means at least one of connected objects, a character "/" generally means that a preceding and succeeding related objects are in an "or" relationship.

In the description of the present application, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the present application.

In the description of the present application, it is to 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 meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

As shown in fig. 1, an antenna apparatus provided in an embodiment of the present application includes:

a substrate 110;

the antenna body 120, the antenna body 120 is disposed on the substrate 110, and the antenna body 120 is capable of operating in a first frequency band;

the N directors 130, the N directors 130 are disposed on the substrate 110, the N directors 130 are sequentially arranged at intervals on the first side of the antenna body 120, one end of each director 130 is grounded, a difference between the 1/4 wavelength of the first frequency band and the length of each director 130 is greater than 0 and smaller than a first specific value, N is a positive integer, and the first specific value is a positive number.

In this embodiment, the substrate 110 may be used for attachment of the antenna body 120 and the director 130. In general, the substrate 110 may be a non-conductive structure, or an insulating material may be disposed on the substrate 110 to further connect with the antenna body 120 and the director 130.

In some examples, the substrate 110 in the antenna device may be used only for the attachment of the antenna body 120 and the director 130. In other examples, the substrate 110 may be multiplexed with other functions. For example, the antenna device may be applied to a mobile terminal, and the substrate 110 may be reused as a decoration.

The antenna body 120 may include an element or the like, and in general, the element of the antenna body 120 may be an active element. The specific form of the antenna body 120 is not limited herein, and the antenna body 120 may be embedded in the substrate 110, or may be attached to the surface of the substrate 110.

The antenna body 120 may operate in a first frequency band. For example, if the antenna device provided in the present embodiment is a Global Positioning System (GPS) antenna, the antenna main body 120 may operate in the L1 frequency band (1575.42 ± 1.023MHz), or in the L2 frequency band (1227.6 ± 10.23MHz), etc. Of course, similarly, when the antenna device is a beidou antenna, the antenna main body 120 may also operate in a corresponding frequency band, which is not illustrated here.

The director 130 may be of similar form to the antenna body 120, such as: the director 130 may also include a vibrator; in addition, the director 130 may be similar to the antenna body 120 in terms of materials and connection methods with the substrate 110, and the like, and will not be described herein.

The number of directors 130 may be one or more. In the case that there is one director 130, the director 130 may be disposed at one side of the antenna body 120 with a certain interval from the antenna body 120. In the case that there are a plurality of directors 130, the directors 130 may be located on the same side of the antenna body 120, and there is a certain interval between two adjacent directors 130, and between the antenna body 120 and the adjacent directors 130.

It will be readily appreciated that in the presence of an alternating current on the antenna body 120, adjacent directors 130 may couple to produce a corresponding current. As shown in fig. 1, the alternating current of the antenna body 120 may cause the coupling current I1 generated on the adjacent directors 130, and similarly, the coupling currents I2, I3, I4, etc. may be sequentially generated on the remaining directors 130 arranged in sequence.

By properly selecting the length of the antenna body 120, the length of the director 130, or the spacing therebetween, the phase of the coupling current on the director 130 can be made to lag the phase of the current on the antenna body 120.

The electromagnetic wave generated on the antenna body 120 propagates to the position of the director 130, and the phase of the electromagnetic wave at the director 130 is considered to be ahead of the phase of the electromagnetic wave at the antenna body 120.

When the phase lag caused by the coupling current is the same as the phase lead caused by the propagation of the electromagnetic wave, the two phases can cancel each other out, and the phase of the electromagnetic wave generated by the antenna body 120 is the same as the phase of the electromagnetic wave generated by the director 130, so that the director 130 can strengthen the field of the antenna body 120 towards the direction of the director 130, thereby obtaining the effect of directional radiation.

Similarly, when there are a plurality of directors 130, the principle of action between two adjacent directors 130 is actually similar to the action between the antenna main body 120 and its adjacent directors 130, and the detailed description thereof is omitted here.

In this embodiment, one end of each director 130 is grounded, and the difference between the 1/4 wavelength of the first frequency band and the length of each director 130 is greater than 0 and smaller than a first specific value, which is a positive number. In other words, the length of each director 130 may be slightly less than the 1/4 wavelength of the first frequency band.

Generally, for a frequency band, there may be a corresponding intermediate frequency point, which may have a comparatively determined frequency. For example, in the L1 band of GPS provided above, the frequency of the intermediate frequency point may be 1575.42 MHz. Accordingly, the 1/4 wavelength in the first frequency band can be regarded as the wavelength in the middle frequency point of the first frequency band.

Of course, in some possible embodiments, the wavelengths of other frequency points in the first frequency band except the intermediate frequency point may also be selected as the wavelengths of the first frequency band.

For simplicity of illustration, the wavelength of the first frequency band may be referred to as λ hereinafter₁. In a general application scenario, the director 130 is not grounded, coupling currents exist at both ends of the director 130, the director 130 is equivalent to a dipole, the current in the middle of the director 130 is 0, the coupling currents exist at the left end and the right end respectively, and the lengths of both ends in the middle of the director 130 are respectively designed to be slightly smaller than λ₁4, the total length of the guider 130 is designed to be slightly less than lambda₁/2。

However, since the antenna device includes the antenna body 120 and at least one director 130, a certain distance needs to exist between the antenna body 120 and the director 130, and between two adjacent directors 130. A longer director 130 results in a larger overall size and larger footprint for the antenna assembly. When the antenna device is applied to an electronic device, the antenna device may press an installation space of other components, which makes it difficult to achieve a slimness of the electronic device.

In the present embodiment, since one end of the director 130 is grounded and the end current is 0, the coupling current appears at the other end of the director 130, i.e. the director 130 can be regarded as a monopole in practice. In this case, the length of the director 130 at the ungrounded end may be set to be slightly less than λ₁/4, the length of the grounded end is not required, and the total length of the director 130 can be designed to be slightly less than λ₁/4。

It can be seen that in the case where one end of each director 130 is grounded, the length of the director 130 can be effectively reduced.

The antenna device provided by the embodiment of the application comprises a substrate 110, an antenna body 120 and N directors 130, wherein the antenna body 120 and the N directors 130 are all arranged on the substrate 110, the N directors 130 are arranged on the first side of the antenna body 120 at intervals in sequence, the antenna body 120 can work in a first frequency band, one end of each director 130 is grounded, the difference between the 1/4 wavelength of the first frequency band and the length of each director 130 is greater than 0 and smaller than a first specific value, wherein N is a positive integer, and the first specific value is a positive number. The embodiment of the present application reduces the length of each director 130 by grounding one end of each director 130, thereby contributing to reducing the overall size of the antenna device and reducing the space required for mounting the antenna device.

Optionally, the antenna device further comprises an impedance matching circuit 121;

a first end of the antenna body 120 is grounded, a second end of the antenna body 120 is connected to a first end of an impedance matching circuit 121, a second end of the impedance matching circuit 121 is connected to a first end of a feed 122 of the antenna device, and a second end of the feed 122 is grounded.

As shown in fig. 1, the first end of the antenna body 120 is grounded, and the second end may be grounded after being connected to the impedance matching circuit 121 and the feed 122 in sequence.

The second end of the antenna body 120 is connected to the feed 122, so that the antenna body 120 becomes an active element, and the second end thereof can actively generate electromagnetic wave radiation.

Similar to the above-mentioned director 130, the antenna body 120 can be designed to have a length of λ because the first end is grounded₁/4 or close to λ₁And/4, etc., so that the length of the antenna body 120 can also be effectively reduced, contributing to further reduction in the size of the antenna device.

As for the arrangement of the impedance matching circuit 121, the equivalent impedance after the antenna main body 120 is connected to the impedance matching circuit 121 is mainly used to match with the input impedance of the feed 122, so as to improve the radiation efficiency of the antenna main body 120.

In some embodiments, the antenna body 120 and the N directors 130 are embedded in the substrate 110.

To a certain extent, both the antenna main body 120 and the directors 130 may be considered as elements, and therefore, for the sake of simplicity of description, both the antenna main body 120 and the N directors 130 may be referred to as elements.

As shown in fig. 2, in one embodiment, the antenna body 120 and the N directors 130 may be embedded in the substrate 110. The substrate 110 may be made of an insulating material such as plastic, and the antenna body 120 may be made of a conductive material such as metal.

In this case, the elements in the antenna device may be insulated from each other, and the alternating current on one element may cause a coupled current on the other element, and further generate electromagnetic radiation.

In other embodiments, the elements such as the antenna body 120 and the N directors 130 may be attached to the surface of the substrate 110, as shown in fig. 3. Specifically, the vibrator may be formed on the substrate 110 by Printing Direct Structuring (PDS), Laser Direct Structuring (LDS), or the like. Alternatively, the vibrator may be a Flexible Printed Circuit (FPC) and fixedly attached to the substrate 110.

Similarly, the substrate 110 may be made of an insulating material, and a coupling current may be generated in each of the oscillators, thereby further generating electromagnetic radiation.

In some embodiments, the shape of the substrate 110 may be rectangular, circular, triangular, or the like, and is not limited herein.

In addition, as shown above, the substrate 110 may be reused as other functions, and accordingly, the substrate 110 may be provided with structures for adapting to the functions, such as the openings 111 or the protrusions, and the like, which are not limited herein.

For example, as shown in fig. 4, the substrate 110 may be rectangular, which may be reused as a camera trim 210 in an electronic device, and accordingly, an opening 111 through which a camera passes may be provided on the substrate 110.

For another example, as shown in fig. 5, the substrate 110 may be circular, and the substrate 110 may be provided with an opening 111.

For another example, as shown in fig. 6, the substrate 110 may be triangular, and the substrate 110 may be provided with an opening 111. Furthermore, the length direction of the antenna body 120 may be parallel to one side of the substrate 110, and the length of the N directors 130 may decrease with increasing distance from the antenna body 120, on the one hand, helping to accommodate the change in width of the triangular substrate 110, and on the other hand, helping to enable the coupling current on the directors 130 to reliably generate a phase lag in a direction away from the antenna body 120.

As can be seen from fig. 4 to 6, if the antenna main body 120 and the N directors 130 are both referred to as an element, when the opening 111 overlaps with the element, the width of the element may be appropriately adjusted to avoid dividing one element into multiple sections by the opening 111, thereby ensuring that the length of each element can meet the requirement of electromagnetic wave radiation.

Alternatively, in the case that the substrate 110 is rectangular, the length direction of the antenna body 120 is the same as the length direction of the substrate 110, and the antenna body 120 and the N directors 130 are sequentially arranged at intervals in the width direction of the substrate 110; alternatively, the first and second electrodes may be,

the length direction of the antenna body 120 is identical to the width direction of the substrate 110, and the antenna body 120 and the N directors 130 are sequentially arranged at intervals in the length direction of the substrate 110.

As shown in fig. 4 and 7, the shape of the substrate 110 may be rectangular, and accordingly, the substrate 110 may have a long side and a wide side.

As shown in fig. 4, in one embodiment, the antenna body 120 and the N directors 130, that is, the length direction of each element, may be aligned with the width direction of the substrate 110, and the plurality of elements may be sequentially arranged at intervals along the length direction of the substrate 110.

Since the substrate 110 may have a large space in the length direction, a relatively large number of directors 130 may be provided.

It is easy to understand that the radiation capability of the antenna device in the direction from the antenna body 120 to the directors 130 may be positively correlated with the number of the directors 130. In other words, the greater the number of directors 130, the greater the radiation capability of the antenna apparatus in a particular direction. Therefore, the present embodiment can satisfy the setting of a larger number of directors 130, so that the antenna device has better directional radiation capability.

As shown in fig. 7, in another embodiment, the length direction of each vibrator may be identical to the length direction of the substrate 110, and a plurality of vibrators may be sequentially arranged at intervals in the width direction of the substrate 110.

In this embodiment, the space in the longitudinal direction of the substrate 110 can satisfy the installation of a relatively long-sized oscillator, thereby satisfying the installation of the antenna main body 120 and the associated director 130 operating in a relatively low frequency band and improving the application range of the antenna device.

In some application scenarios, when the mounting orientation of the substrate 110 is fixed, the radiation direction of the antenna device can be changed by changing the length extension direction and the sequential arrangement direction of each oscillator, so as to meet application requirements of different scenarios.

Of course, in practical applications, as the number of directors 130 increases, the gain of the directional radiation capability brought by the directors 130 generally decreases, and therefore, the number of directors 130 generally does not increase without limitation. When the length direction and the width direction of the substrate 110 both satisfy the installation requirements of the preset number of directors 130, the arrangement direction of each vibrator on the substrate 110 can be selected as required.

Optionally, the distance between the antenna body 120 and its adjacent director 130 is less than the 1/2 wavelength of the first frequency band;

in the case where N is greater than 1, the distance between two adjacent directors 130 is less than the 1/2 wavelength in the first frequency band.

In this embodiment, the size of the entire antenna device can be effectively limited by limiting the maximum distance between adjacent elements. In addition, the smaller the distance between the oscillators is, the larger the coupled current is, and under the condition of meeting the phase requirement, the maximum distance between the adjacent oscillators is limited, so that the directional radiation capability can be effectively improved.

In practical applications, the specific distance between the elements can be adjusted according to the actual directional radiation capability of the antenna device, which is described in detail herein.

Optionally, as shown in fig. 8, the antenna apparatus further includes a radiation branch 140, the radiation branch 140 is electrically connected to the antenna main body 120, the radiation branch 140 operates in a second frequency band, and the first frequency band is different from the second frequency band.

In this embodiment, the radiation branch 140 is electrically connected to the antenna main body 120, so that the operable frequency band of the antenna device can be expanded, and the application range of the antenna device can be widened.

For example, the antenna body 120 and the director 130 cooperate to perform the function of directing the antenna, such as enabling the antenna device to operate in the L1 band of GPS.

The radiation branch 140 may be disposed to enable the antenna device to obtain the function of a common antenna, such as enabling the antenna device to operate in a frequency band of 5G or a frequency band of 4G.

Alternatively, the radiation branch 140 may be provided so that the antenna device becomes a directive antenna capable of operating in a plurality of frequency bands. For example, the antenna device is made to be a GPS antenna capable of operating in the L1 frequency band and the L2 frequency band.

Setting the first frequency band lambda₁Is longer than the second frequency band lambda₂When the antenna device is a directive antenna capable of operating in multiple frequency bands, the length of each director 130 may be slightly less than λ₁(ii)/4; alternatively, it may be further slightly less than λ₂4 (i.e. the difference between the 1/4 wavelength in the second frequency band and the length of each director 130 is greater than 0 and less than a predetermined positive number); alternatively, it may be slightly smaller than (λ)₁/4+λ₂/4)/2。

That is, the reference wavelength selected for the length of the director 130 may be determined according to the operating frequency band in which the antenna device is emphasized. For example, when the antenna device is focused on the L1 band, the length of the director 130 may be determined based on the 1/4 wavelength of the L1 band; when the antenna apparatus is operated with emphasis on the L2 band, the length of the director 130 may be determined based on the 1/4 wavelength of the L2 band; when the antenna apparatus emphasizes the operation in the L1 band and the L2 band, the length of the director 130 may be determined based on an average of the 1/4 wavelength of the L1 band and the 1/4 wavelength of the L2 band. In this way, the antenna device can be made to reliably operate in a desired frequency band.

In practical applications, the number of the radiation branches 140 may be one or more, and when the number of the radiation branches 140 is multiple, different radiation branches 140 may also implement different antenna functions.

Optionally, as shown in fig. 9, the antenna apparatus further includes a reflector 150, the reflector 150 is disposed on the substrate 110, and the reflector 150 is located on a second side of the antenna body 120, where the second side is opposite to the first side.

In this embodiment, the form of the reflector 150 may be similar to the form of the antenna body 120 and the form of the director 130, for example, the material of the reflector 150, the arrangement direction of the reflector 150, and the reflector 150 may be regarded as a dipole in nature, and may be the same as or similar to the antenna body 120 and the director 130, and are not illustrated here.

In conjunction with the above description of the operation principle of the director 130, the phase lag of the current coupled to the director 130 and the phase lead brought by the electromagnetic wave emitted from the antenna body 120 propagating to the director 130 can cancel each other out, so as to strengthen the field in the direction from the antenna body 120 to the director 130, and realize directional radiation.

The operation principle of the reflector 150 is similar to that of the director 130.

Specifically, in the present embodiment, the N directors 130 are located at a first side of the antenna body 120, and the reflector 150 is located at a second side of the antenna body 120 that is away from the first side. In other words, the propagation direction of the antenna body 120 to the director 130 (referred to as the first direction) is opposite to the propagation direction of the antenna body 120 to the reflector 150 (referred to as the second direction). In order to improve the directional radiation capability of the antenna device, it is necessary to suppress the propagation field in the second direction while improving the propagation field in the first direction.

In practical applications, the phase of the current coupled to the director 130 can be advanced with respect to the phase of the current on the antenna body 120 by properly designing the length of the reflector 150 or the distance between the reflector 150 and the antenna body 120.

The phase of the electromagnetic wave generated by the antenna body 120 at the reflector 150 is also advanced compared to the phase at the antenna body 120.

The phase advance caused by the coupling current and the phase advance caused by the propagation of the electromagnetic wave may be mutually superimposed, and when the phase advance generated by the superimposed two phases is pi, the phase of the electromagnetic wave generated by the antenna body 120 is opposite to the phase of the electromagnetic wave generated by the reflector 150, and the two phases cancel each other, which is equivalent to suppressing the propagation of the electromagnetic wave generated by the antenna body 120 in the second direction, and from another point of view, it is considered that the reflector 150 has a function of reflecting the electromagnetic wave generated by the antenna body 120, and the directional radiation capability of the antenna device in the first direction is improved.

Alternatively, in the case where one end of the reflector 150 is grounded, the difference between the length of the reflector 150 and the 1/4 wavelength of the first frequency band is greater than 0 and smaller than a second specific value, which is a positive number.

In this embodiment, the difference between the length of the reflector 150 and the 1/4 wavelength of the first frequency band is greater than 0 and smaller than the second specific value, in other words, the length of the reflector 150 may be slightly greater than λ₁And/4.

As indicated above, both the director 130 and the reflector 150 may be considered vibrators. Similar to the principle of grounding director 130 above, when one end of reflector 150 is grounded, the coupling current appears at the other end of reflector 150, i.e., reflector 150 may be considered to be a monopole in nature. In this case, the reflector 150 may be provided at the ungrounded end with a length slightly greater than that of the ungrounded endλ₁/4, the length of the grounded end is not required, and the total length of the reflector 150 can be designed to be slightly larger than λ₁/4。

It can be seen that, in the case of grounding one end of the reflector 150, the length of the reflector 150 can be effectively reduced, thereby helping to avoid the reflector 150 from excessively increasing the overall size of the antenna device in the case of improving the directional radiation capability of the antenna device through the reflector 150.

Of course, in some application scenarios, if there is enough assembly space at the end where the reflector 150 is located, the reflector 150 may be set to be not grounded, and the length of the reflector 150 is slightly greater than λ₁/2。

As shown in fig. 10, fig. 10 is an effect diagram of the antenna device provided in the embodiment of the present application when applied to an electronic device. The electronic device may be a mobile terminal, a tablet computer, a notebook computer, a base station device, or a wearable device, and is not limited in this respect.

In the figure, MA0 may be considered to be the antenna main ground of an electronic device, such as a circuit board or a large-area metal housing in an electronic device, and so on. The antenna body 120 and the director 130 in the antenna device may be electrically connected to the antenna ground of the electronic device to further achieve grounding.

In fig. 10, the antenna body 120 may correspond to the elements connected to the feed 122 at the rightmost side, and the respective directors 130 may be disposed at the left side of the antenna body 120. FP0 is a schematic diagram of the radiation direction of the antenna device without the director 130, and FP1 is a schematic diagram of the radiation direction of the antenna device with the director 130.

As can be seen, the antenna device provided in the embodiment of the present application can pull the radiation direction of the antenna device to the position of the director 130 through the arrangement of the director 130, so that the antenna device has a better directional radiation capability. When the antenna device is used for a GPS antenna or the like, it can have better upper hemispherical radiation efficiency.

As shown in fig. 11, an embodiment of the present application further provides an electronic device, which includes a device main body 200 and the antenna apparatus 100 described above;

the apparatus body 200 includes a camera decoration 210, and the camera decoration 210 is reused as a substrate of the antenna device 100.

It is easy to understand that the implementation manner of the above-mentioned antenna apparatus embodiment is also applicable to the embodiment of the electronic device, and can achieve the same technical effect, which is not described herein again.

In addition, in the present embodiment, the camera decoration 210 included in the apparatus main body 200 is reused as the substrate of the antenna device 100, and it can be considered that a space is arranged for the antenna device 100 alone, so that the problems of poor isolation, abnormal bandwidth change, and reduced radiation efficiency, which are caused by sharing a space with other antennas around the electronic apparatus, are avoided.

Alternatively, as shown in fig. 4 to 9, the camera decoration piece 210 is provided with an opening 111 for a camera to pass through;

the antenna body 120 and the N directors 130 both avoid the opening 111.

In this embodiment, the camera decoration 210 may be provided with an opening 111 through which the camera passes, and in order to avoid interference caused by the mounting and the sensitization of the antenna device 100 on the camera, the antenna body 120 and the director 130 and other vibrators can avoid the opening 111.

Of course, when each oscillator avoids the opening 111, it is also necessary to avoid that the length cannot meet the radiation requirement due to the fact that each oscillator is divided into a plurality of sections by the opening 111. In addition, the spacing between the elements can affect the directional radiation effect of the antenna device 100. Therefore, in practical application, the width of each oscillator can be designed reasonably, so that each oscillator has a relatively proper distance while avoiding being divided by the opening 111.

In the description herein, reference to the description of the terms "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present application have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the application, the scope of which is defined by the claims and their equivalents.

Claims

1. An antenna device, comprising:

a substrate;

the antenna main body is arranged on the substrate and can work in a first frequency band;

the antenna comprises N directors, wherein the N directors are arranged on the substrate, the N directors are arranged on the first side of the antenna main body at intervals in sequence, one end of each director is grounded, the difference value between the 1/4 wavelength of the first frequency band and the length of each director is greater than 0 and smaller than a first specific value, N is a positive integer, and the first specific value is a positive number.

2. The antenna device of claim 1, further comprising a radiating stub, the radiating stub electrically connected to the antenna body, the radiating stub operating in a second frequency band, the first frequency band being different from the second frequency band.

3. The antenna device of claim 1, further comprising a reflector disposed on the substrate and located on a second side of the antenna body, the second side facing away from the first side.

4. The antenna device according to claim 3, wherein in a case where one end of the reflector is grounded, a difference between a length of the reflector and the 1/4 wavelength of the first frequency band is greater than 0 and smaller than a second specific value, the second specific value being a positive number.

5. The antenna device according to claim 1, wherein a distance between the antenna body and the director adjacent thereto is less than 1/2 wavelengths of the first frequency band;

in the case that N is greater than 1, the distance between two adjacent directors is smaller than the 1/2 wavelength of the first frequency band.

6. The antenna device according to claim 1, wherein, in a case where the substrate has a rectangular shape, a longitudinal direction of the antenna body coincides with a longitudinal direction of the substrate, and the antenna body and the N directors are arranged at intervals in order in a width direction of the substrate; alternatively, the first and second electrodes may be,

the length direction of the antenna main body is consistent with the width direction of the substrate, and the antenna main body and the N directors are sequentially arranged at intervals in the length direction of the substrate.

7. The antenna device according to claim 1, wherein the antenna device further comprises an impedance matching circuit;

the first end of the antenna body is grounded, the second end of the antenna body is connected with the first end of the impedance matching circuit, the second end of the impedance matching circuit is connected with the first end of a feed source of the antenna device, and the second end of the feed source is grounded.

8. The antenna device of claim 1, wherein the antenna body and the N directors are embedded in the substrate.

9. An electronic device characterized by comprising a device body and the antenna device according to any one of claims 1 to 8;

the camera decoration piece that the equipment main part includes, the multiplexing of camera decoration piece is for antenna device's base plate.

10. The electronic device of claim 9, wherein the camera trim piece is provided with an opening for a camera to pass through;

the antenna main body and the N directors are all avoided from the open hole.