Antenna assembly and electronic equipment

Abstract

The utility model provides an antenna assembly and electronic equipment, and relates to the technical field of antennas. The antenna assembly comprises a dielectric substrate which comprises a first surface and a second surface opposite to the first surface; the first patch layer is positioned on the first surface; the second patch layer is positioned on the second surface; wherein the first patch layer comprises a first series capacitor structure, and the second patch layer comprises a second series capacitor structure, so that a composite right / left hand transmission line is formed between the first patch layer and the second patch layer.

Description

Technical Field

[0001] The present application relates to the field of antenna technology, and in particular to an antenna assembly and an electronic device. Background Art

[0002] Antennas, as the front-end components for transmitting and receiving signals in communication equipment, play a vital role in communication quality. However, various wireless communication methods represented by modern wireless communication, satellite communication, ship communication and radar communication have put forward higher and higher requirements on antenna performance indicators. The traditional antenna form and function cannot keep up with the demand for miniaturization of electronic devices to a certain extent. Utility Model Content

[0003] The purpose of the embodiments of the present application is to provide an antenna assembly and an electronic device, which mainly provide the following technical solutions:

[0004] In a first aspect, the present application provides an antenna assembly, the antenna assembly comprising: a dielectric substrate, comprising a first surface and a second surface opposite to the first surface;

[0005] A first patch layer, located on the first surface;

[0006] A second patch layer, located on the second surface;

[0007] The first patch layer includes a first series capacitor structure, and the second patch layer includes a second series capacitor structure, so that a composite left-handed transmission line is formed between the first patch layer and the second patch layer.

[0008] In some modified implementations of the first aspect of the present application, the first patch layer includes at least two first-shaped patch units, and microstrip lines are connected between adjacent first-shaped patch units;

[0009] The second patch layer includes at least two second-shaped patch units, and microstrip lines are connected between adjacent second-shaped patch units;

[0010] Each of the first-shaped patch units includes the first series capacitor structure, and each of the second-shaped patch units includes the second series capacitor structure.

[0011] In some modified implementations of the first aspect of the present application, the first patch layer and the second patch layer are arranged alternately so that the first shape patch unit and the corresponding second shape patch unit form a path phase difference of 180 degrees;

[0012] The first-shaped patch is connected to the inner core of the feeding coaxial cable, and the second-shaped patch unit is connected to the outer conductor of the feeding coaxial cable, so that the two form a feeding phase difference of 180 degrees;

[0013] The path phase difference is superimposed on the feeding phase difference so that the first shape patch unit and the corresponding second shape patch unit have the same phase.

[0014] In some modified implementations of the first aspect of the present application, a gap is opened on each of the first-shaped patch units and each of the second-shaped patch units to form the series capacitor structure.

[0015] In some modified implementations of the first aspect of the present application, an interdigital capacitor is respectively provided on each of the first-shaped patch units and each of the second-shaped patch units to form the series capacitor structure.

[0016] In some modified implementations of the first aspect of the present application, an inductor structure is connected in parallel between the first shape patch unit and the second shape patch unit.

[0017] In some modified implementations of the first aspect of the present application, a distributed inductance is generated between the first shape patch unit and the second shape patch unit through a metallized via or a microstrip line.

[0018] In some modified implementations of the first aspect of the present application, the inductor is formed at a center position of the first shape patch unit and the second shape patch unit.

[0019] In some modified implementations of the first aspect of the present application, the resonant frequency generated by the antenna assembly covers a first frequency band and a second frequency band, the first frequency band covers a wireless network Wireless Fidelity (WIFI) 2.4 GHz, and the second frequency band covers a wireless network (WIFI) 5 GHz.

[0020] A second aspect of the present application provides an electronic device, which includes: the above-mentioned electronic device.

[0021] Compared with the prior art, the antenna assembly and electronic device provided in the present application utilize the left-handed resonant mode introduced by the characteristics of metamaterials to greatly reduce the physical size of the antenna assembly, reducing the overall size of the antenna assembly by about 55%, which is beneficial to the miniaturized design of the antenna assembly, thereby facilitating integration with the device; and the antenna assembly covers two frequency bands at the same time, has good horizontal comprehensiveness in both frequency bands, and has high gain, and can be widely used in the field of narrowband Internet of Things (NB-IoT); the antenna assembly can be easily integrated with the PCB, which can reduce the design complexity and save design costs, and can also be used as a standardized design product to improve its versatility. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] By reading the detailed description below with reference to the accompanying drawings, the above and other purposes, features and advantages of the exemplary embodiments of the present application will become easy to understand. In the accompanying drawings, several embodiments of the present application are shown in an exemplary and non-limiting manner, and the same or corresponding reference numerals represent the same or corresponding parts, wherein:

[0023] Figure 1 The structure diagram of the antenna assembly provided in the embodiment of the present application is schematically shown;

[0024] Figure 2 The schematic diagram of the structure of the antenna assembly provided in the embodiment of the present application is shown schematically from another angle;

[0025] Figure 3 The cross-sectional structure diagram of the antenna assembly provided in the embodiment of the present application is schematically shown;

[0026] Figure 4 A diagram schematically shows the relationship between the propagation constant and the frequency table of a left-handed transmission line;

[0027] Figure 5 A schematic diagram of the reflection coefficient of the antenna assembly provided in an embodiment of the present application is schematically shown;

[0028] Figure 6 The cross-sectional structure diagram of the electronic device provided in the embodiment of the present application is schematically shown.

[0029] Description of Figure Numbers:

[0030] Dielectric substrate 1, first surface 101, second surface 102, first patch layer 21, first shape patch unit 211, first microstrip line 212, second patch layer 22, second shape patch unit 221, second microstrip line 222, first series capacitor structure 31, second series capacitor structure 32, inductor structure 4, electronic device 5, mainboard 6. DETAILED DESCRIPTION

[0031] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided in order to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0032] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in this application should have the common meanings understood by technicians in the field to which this application belongs.

[0033] Embodiment 1

[0034] Reference Figure 1 and attached Figure 2 Embodiment 1 of the present application proposes an antenna component, which includes: a dielectric substrate 1, including a first surface 101 and a second surface 102 opposite to the first surface 101; a first patch layer 21, located on the first surface 101; and a second patch layer 22, located on the second surface 102; wherein the first patch layer 21 includes a first series capacitor structure 31, and the second patch layer 22 includes a second series capacitor structure 32, so that a composite left-handed transmission line is formed between the first patch layer 21 and the second patch layer 22.

[0035] Specifically, the antenna assembly provided in this embodiment is a printed microstrip antenna array. Based on the problems of large size and single frequency band of the traditional right-hand printed microstrip antenna array, the antenna assembly in this embodiment includes a dielectric substrate 1. The dielectric substrate 1 is an important component of the microstrip antenna, and its function is to provide a stable platform so that the antenna can maintain the correct position and direction. The dielectric substrate 1 in this embodiment can be, but is not limited to, a hard circuit board, a semiconductor substrate, a ferrite material substrate, and a ceramic substrate. The dielectric substrate 1 includes a first surface 101 and a second surface 102 opposite to each other, and the first surface 101 and the second surface 102 are respectively provided with a first patch layer 21 And the second patch layer 22, in order to form a dual-frequency antenna, so that the antenna assembly covers two frequency bands at the same time, in the technical solution adopted in the present application, the first patch layer 21 includes a first series capacitor structure 31, and the second patch layer 22 includes a second series capacitor structure 32, so that a composite left-handed transmission line is formed between the first patch layer 21 and the second patch layer 22, that is, on the basis of the traditional printed microstrip antenna array, a metamaterial with left-handed transmission line characteristics is introduced, which has a great effect on the miniaturization of the antenna module. At the same time, the right-hand resonant mode corresponding to the printed microstrip antenna array is still unaffected, thereby forming a dual-frequency antenna, and both frequency bands have good comprehensiveness and gain.

[0036] Among them, refer to the attached Figure 5 , which is a reflection coefficient diagram of an antenna component. As shown in the figure, the return loss S11 in the -6dB frequency band is exactly two frequency bands, that is, the resonant frequency generated by the antenna component can cover the first frequency band and the second frequency band at the same time. The first frequency band and the second frequency band correspond to the wireless network (such as WIFI) 2.4GHz (for example: 2.4GHz-2.4835GHz) and the wireless network (such as WIFI) 5GHz (for example: 5.150GHz-5.850GHz), but are not limited to this.

[0037] According to the above, an embodiment of the present application proposes an antenna assembly, which utilizes the left-handed resonant mode introduced by the characteristics of metamaterials to greatly reduce the physical size of the antenna assembly, and reduces the overall size of the antenna assembly by about 55%, which is beneficial to the miniaturized design of the antenna assembly, thereby facilitating integration with the device; and the antenna assembly covers two frequency bands at the same time, has good horizontal comprehensiveness in both frequency bands, and has high gain, and can be widely used in the field of narrowband Internet of Things (NB-IoT); the antenna assembly can be easily integrated with the PCB, which can reduce the design complexity, save design labor, and can also be used as a standardized design product to improve its versatility.

[0038] For further information, see Attachment Figure 1 and attached Figure 2 In a specific implementation, the first patch layer 21 is a reference ground for the second patch layer 22 and has a phase difference of 180 degrees with the second patch layer 22; the first patch layer 21 and the second patch layer 22 are arranged alternately so that the two have the same phase.

[0039] Specifically, in the technical solution adopted in the present application, when forming the second patch layer 22 and the first patch layer 21, the half-wavelength second patch layer 22 and the first patch layer 21 are staggered, and the first patch layer 21 serves as a reference ground for the second patch layer 22, and has a phase difference of 180 degrees with the second patch layer 22. The 180-degree phase difference caused by the half-wavelength distance between adjacent patch layers makes the phases of the first patch layer 21 and the second patch layer 22 in the same direction.

[0040] For further information, see Attachment Figure 1 and attached Figure 2 In a specific implementation, the first patch layer 21 includes at least two first shape patch units 211, and a first microstrip line 212 is connected between adjacent first shape patch units 211; the second patch layer 22 includes at least two second shape patch units 221, and a second microstrip line 222 is connected between adjacent second shape patch units 221; each first shape patch unit 211 includes the first series capacitor structure 31, and each second shape patch unit 221 includes the second series capacitor structure 32.

[0041] Specifically, in the technical solution adopted in the present application, the first patch layer 21 includes at least two first-shaped patch units 211, and a first microstrip line 212 is connected between adjacent first-shaped patch units 211. Similarly, the second patch layer 22 includes at least two second-shaped patch units 221, and a second microstrip line 222 is connected between adjacent second-shaped patch units 221. The shapes of the first-shaped patch units 211 and the second-shaped patch units 221 can be rectangular, circular or other polygonal shapes; each first-shaped patch unit 211 includes the above-mentioned first series capacitor structure 31, and each second-shaped patch unit 221 includes the above-mentioned second series capacitor structure 32. The first series capacitor structure 31 and the second series capacitor structure 32 can be formed in the following three ways, but are not limited to the following three ways. The first formation method is: a small capacitor is connected in series by breaking a small slit on each patch, the second formation method is: a series capacitor is formed by breaking a small slit on each patch, and the third formation method is: a distributed capacitor is generated by using the interdigital capacitor method, and the series capacitor structure can be formed by one of the above three ways.

[0042] For further information, see Attachment Figure 1 and attached Figure 2 In a specific implementation, the first patch layer and the second patch layer are arranged alternately so that the first shape patch unit and the corresponding second shape patch unit form a path phase difference of 180 degrees;

[0043] The first-shaped patch is connected to the inner core of the feeding coaxial cable, and the second-shaped patch unit is connected to the outer conductor of the feeding coaxial cable, so that the two form a feeding phase difference of 180 degrees;

[0044] The path phase difference is superimposed on the feeding phase difference so that the first shape patch unit and the corresponding second shape patch unit have the same phase.

[0045] Specifically, in the technical solution adopted by the present application, the first patch layer 21 includes two first-shaped patch units 211, and the attached Figure 1 From left to right, there are the first patch and the second patch. The second patch layer 22 includes two second-shaped patches 221. Figure 2Taking the third patch and the fourth patch from left to right as an example, the first patch layer and the second patch layer are arranged alternately, and the phase difference caused by the path difference between the first patch and the third patch is 180 degrees, that is, there is a path phase difference of 180 degrees. At the same time, the third patch is connected to the inner core of the feeding coaxial cable, and the first patch is connected to the outer conductor of the feeding coaxial cable. Therefore, there is a feeding phase difference of 180 degrees between the first patch and the third patch; the total phase difference generated by the path phase difference and the feeding phase difference is 360 degrees (that is, 0 degrees), that is, the same phase. Similarly, the first patch and the fourth patch are in phase, and the fourth patch and the second patch are also in phase, that is, the current phases of the four patches are all in phase. Finally, the fields generated by the four patches are all in the same direction along the arrangement direction. The advantage of such a design is that the radiated fields are superimposed in the same direction.

[0046] For further information, see Attachment Figure 1 , Attachment Figure 2 And attached Figure 3 In a specific implementation, an inductor structure 4 is connected in parallel between the first shape patch unit 211 and the second shape patch unit 221 .

[0047] Specifically, in order to form a composite left-handed transmission line, in the technical solution adopted in the present application, after forming the first series capacitor structure 31 and the second series capacitor structure 32, a parallel inductor is generated between the first patch layer 21 and the second patch layer 22 at the center position of each first shape patch unit 211 and each second shape patch unit 221 (but not limited to this). The parallel inductor can be formed in but is not limited to the following two ways. The first formation method is: an inductor is connected in parallel between the first patch layer 21 and the second patch layer 22. The second formation method is: a distributed inductor is generated through a metallized via or a microstrip line 201, thereby generating left and right transmission lines, and the right-hand parasitic effect is inevitable, thereby forming a composite left-handed transmission line.

[0048] Specifically, as attached Figure 4 The figure shows the relationship between the propagation constant and the frequency of the left-handed transmission line. It can be seen from the figure that the absolute value of the propagation constant is no longer proportional to the frequency, but inversely proportional. This means that when the frequency decreases, the absolute value of the propagation constant increases. This is particularly meaningful for the miniaturization of antenna components, because the propagation constant, or the wave vector, is relatively large, which means that the phase can reach half the wavelength for a very small physical length (for a half-wave array, β*L=π / 2), thereby reducing the size of the antenna. This is also the principle of the reduction in the size of the 2.4GHz antenna compared to the traditional right-handed antenna. Compared with the traditional right-handed transmission line antenna, the antenna component provided in the embodiment of the present application utilizes the 2.4G operating frequency band formed by the characteristics of the left and right transmission lines, and its size is reduced by 55%. At the same time, the introduction of the left-handed transmission line does not destroy the original right-hand characteristics, and the 5G operating frequency band generated by the right-hand characteristics still has good overall characteristics.

[0049] Embodiment 2

[0050] Reference Figure 6 , Embodiment 2 of the present application proposes an electronic device 5, and the electronic device 5 includes: the above-mentioned antenna assembly.

[0051] Specifically, the electronic device provided in this embodiment applies the above-mentioned antenna assembly. The electronic device 5 can be, but is not limited to, a laptop computer, a tablet computer or other electronic device. The application of the above-mentioned antenna assembly can facilitate the integration of the antenna assembly with the motherboard 6 of the electronic device 5, and the antenna assembly covers two frequency bands at the same time, which can improve the network stability, flexibility and transmission speed of the electronic device 5, and can meet the user's needs for network use.

[0052] It should be noted that in the description of this specification, the terms "upper", "lower", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application; the terms "connect", "install", "fixed", etc. should be understood in a broad sense, for example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0053] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0054] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. An antenna assembly, characterized in that: include: A dielectric substrate, comprising a first surface and a second surface opposite to the first surface; A first patch layer, located on the first surface; A second patch layer, located on the second surface; The first patch layer includes a first series capacitor structure, and the second patch layer includes a second series capacitor structure, so that a composite left-handed transmission line is formed between the first patch layer and the second patch layer.

2. The antenna assembly according to claim 1, characterized in that: The first patch layer includes at least two first-shaped patch units, and microstrip lines are connected between adjacent first-shaped patch units; The second patch layer includes at least two second-shaped patch units, and microstrip lines are connected between adjacent second-shaped patch units; Each of the first-shaped patch units includes the first series capacitor structure, and each of the second-shaped patch units includes the second series capacitor structure.

3. The antenna assembly according to claim 2, characterized in that: The first patch layer and the second patch layer are arranged alternately so that the first-shaped patch unit and the corresponding second-shaped patch unit form a path phase difference of 180 degrees; The first-shaped patch is connected to the inner core of the feeding coaxial cable, and the second-shaped patch unit is connected to the outer conductor of the feeding coaxial cable, so that the two form a feeding phase difference of 180 degrees; The path phase difference is superimposed on the feeding phase difference so that the first shape patch unit and the corresponding second shape patch unit have the same phase.

4. The antenna assembly according to claim 2, characterized in that: Each of the first-shaped patch units and each of the second-shaped patch units is provided with a gap for forming the series capacitor structure.

5. The antenna assembly according to claim 2, characterized in that: An interdigital capacitor is respectively arranged on each of the first-shaped patch units and each of the second-shaped patch units to form the series capacitor structure.

6. The antenna assembly according to claim 2, characterized in that: An inductor structure is connected in parallel between the first shape patch unit and the second shape patch unit.

7. The antenna assembly according to claim 2, characterized in that: A distributed inductance is generated between the first shape patch unit and the second shape patch unit through metallized vias or microstrip lines.

8. The antenna assembly according to claim 7, characterized in that: The inductor is formed at a center position of the first shape patch unit and the second shape patch unit.

9. The antenna assembly according to claim 1, characterized in that: The resonant frequency generated by the antenna assembly may cover a first frequency band and a second frequency band, wherein the first frequency band covers a wireless network of 2.4 GHz, and the second frequency band covers a wireless network of 5 GHz.

10. An electronic device, characterized in that: include: An antenna assembly as claimed in any one of claims 1 to 9.

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