Patch antenna and electronic equipment

Abstract

The utility model relates to the technical field of antennas, and discloses a patch antenna and an electronic device. The patch antenna of the utility model comprises a circuit board which comprises a first area and a second area adjacent to the first area; the antenna assembly comprises an antenna substrate, a first radiating body, a second radiating body and a third radiating body, the antenna substrate is arranged in the first area, and the first radiating body, the second radiating body and the third radiating body are all arranged on the antenna substrate; and the first radiator, the second radiator and the third radiator are used for enabling the patch antenna to work in a target frequency band. Through the arrangement, the size and the occupied area of the patch antenna can be reduced, and the internal space utilization rate of the terminal equipment carrying the patch antenna is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to antenna technical field, especially a kind of patch antenna and electronic equipment. BACKGROUND

[0002] At present, terminal equipment is developing towards light and thin, small design, which means that the space available for arranging antenna on terminal equipment is smaller and smaller. Therefore, how to select, arrange and debug terminal antenna becomes an important problem affecting whether terminal can be designed small. Since patch antenna has smaller overall volume than most other types of antenna of same frequency, and requires smaller clearance area, patch antenna becomes a widely used antenna scheme for small terminal.

[0003] However, the existing patch antenna still has the problem of occupying large area, which reduces the space available for other components inside terminal and affects the internal layout and space utilization of terminal equipment. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a kind of patch antenna and electronic equipment, can reduce the volume and occupied area of patch antenna, improve the utilization of internal space of terminal equipment.

[0005] To solve the above technical problems, the first aspect of the utility model provides a kind of patch antenna, comprising:

[0006] Circuit board, the circuit board includes first area, and second area adjoining the first area;Antenna assembly, including antenna substrate, first radiator, second radiator and third radiator, the antenna substrate is located in the first area, the first radiator, second radiator and third radiator are all located in the antenna substrate, the first radiator, second radiator and third radiator are used to make the patch antenna work in target frequency band.

[0007] The patch antenna of the utility model can generate multiple resonance signals of different frequencies through separate radiation and mutual coupling of first radiator, second radiator and third radiator, improve antenna bandwidth, thereby covering target operating frequency band, while integrating all radiators of patch antenna on antenna substrate, effectively reducing size, reducing the area of circuit board occupied by antenna assembly, enabling circuit board to set more components, improving the space utilization of circuit board, and thereby improving the internal space utilization of terminal equipment equipped with the patch antenna.

[0008] Optionally, the antenna substrate has a bottom surface facing the circuit board and a top surface facing away from the circuit board, the first radiator and the second radiator are connected and are both arranged on the top surface, and the third radiator is arranged on the bottom surface; the antenna substrate is provided with at least one through hole penetrating through the top surface and the bottom surface, and the first radiator is electrically connected to the third radiator through the through hole.

[0009] Optionally, the first radiator is arranged around the outer edge of the second radiator.

[0010] Optionally, the antenna substrate is provided with at least one heat dissipation hole penetrating through the top surface and the bottom surface, and the heat dissipation hole is located between the first radiator and the second radiator.

[0011] Optionally, the heat dissipation hole is two, the second radiator extends in a first direction, and the two heat dissipation holes are located at opposite ends of the second radiator in the first direction.

[0012] Optionally, the bottom surface is provided with a first antenna pad electrically connected to the first radiator, the first area is provided with a first circuit board pad, and the first antenna pad is connected to the first circuit board pad; further comprising a matching circuit arranged in the second area, and the matching circuit is electrically connected to the first circuit board pad.

[0013] Optionally, further comprising a test point arranged in the second area, the test point is electrically connected to the matching circuit, and the test point is used for external testing equipment to test the patch antenna.

[0014] Optionally, the bottom surface is further provided with a plurality of second antenna pads, the plurality of second antenna pads are arranged at intervals, the first area is provided with a plurality of second circuit board pads, and the plurality of second circuit board pads are arranged at intervals; the plurality of second antenna pads are one-to-one connected to the plurality of second circuit board pads.

[0015] Optionally, the first radiator is used to generate a resonant signal with a frequency of 0.7GHz-0.96GHz; the first radiator and the second radiator are coupled to generate a resonant signal with a frequency of 1.7GHz-2.3GHz; and the second radiator and the third radiator are coupled to generate a resonant signal with a frequency of 2.3GHz-2.7GHz.

[0016] The second aspect of the utility model provides an electronic equipment comprising any one of the above patch antennas. BRIEF DESCRIPTION OF DRAWINGS

[0017] One or more embodiments are illustrated by way of example in the drawings hereof, which are not intended to limit the embodiments to the common features illustrated and described. Where the same reference numbers or same character designations recited in different figures represent similar structures and functions with common features, only the drawings figure numbering will be reduced for purposes of simplicity and clarity in the figures where appropriate.

[0018] Figure 1 is a perspective view of a patch antenna according to an embodiment of the present application;

[0019] Figure 2 is an exploded view of a patch antenna according to an embodiment of the present application;

[0020] Figure 3 is a front view of an antenna assembly of a patch antenna according to an embodiment of the present application;

[0021] Figure 4 is a rear view of an antenna assembly of a patch antenna according to an embodiment of the present application;

[0022] Figure 5 is a front view of a circuit board of a patch antenna according to an embodiment of the present application;

[0023] Figure 6 is a standing wave ratio curve of a patch antenna according to an embodiment of the present application;

[0024] Figure 7 is a resonance peak efficiency curve of a patch antenna according to an embodiment of the present application in a 0.7GHz-0.96GHz frequency band;

[0025] Figure 8 is a resonance peak efficiency curve of a patch antenna according to an embodiment of the present application in a 1.7GHz-2.3GHz frequency band;

[0026] Figure 9 is a resonance peak efficiency curve of a patch antenna according to an embodiment of the present application in a 2.3GHz-2.7GHz frequency band. DETAILED DESCRIPTION

[0027] In order to make the objectives, technical solutions, and advantages of the present application clearer, the various embodiments of the present application will be described in detail below with reference to the accompanying drawings. However, those skilled in the art can understand that, in the various embodiments of the present application, many technical details are presented in order to make the reader better understand the present application. However, even without these technical details and based on various changes and modifications of the following embodiments, the technical solutions claimed in the various claims of the present application can be implemented.

[0028] In the embodiments of the present application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "transverse", "longitudinal" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe the present application and its embodiments, and are not intended to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0029] In addition, in addition to indicating the orientation or positional relationship, the above-mentioned terms can also be used to indicate other meanings, for example, the term "upper" can also be used to indicate a certain dependent relationship or connection relationship in some cases. For those skilled in the art, the specific meaning of these terms in the present application can be understood according to the specific circumstances.

[0030] In addition, the terms "mounting", "setting", "providing", "opening", "connecting", "connecting" should be broadly understood. For example, it can be fixedly connected, detachably connected, or integrally constructed; it can be mechanically connected or electrically connected; it can be directly connected, or indirectly connected through an intermediate medium, or internal communication between two devices, elements or components. For those skilled in the art, the specific meaning of the above-mentioned terms in the present application can be understood according to the specific circumstances.

[0031] In addition, the terms "first", "second" and the like are mainly used to distinguish different devices, elements or components (the specific types and structures may be the same or different), and are not intended to indicate or imply the relative importance and quantity of the indicated devices, elements or components. Unless otherwise stated, the meaning of "multiple" is two or more.

[0032] The present application relates to a patch antenna, which can be used in any type of terminal device, such as desktop computers, notebook computers, mobile phones and the like, but is not limited thereto. When the patch antenna is applied to mobile terminals such as mobile phones, it can be an LTE patch antenna. The present application is described by taking an LTE patch antenna as an example, but it should be understood that the patch antenna of the present application is not limited to an LTE patch antenna.

[0033] Referring to Figure 1 and Figure 2The patch antenna 100 of the embodiment includes a circuit board 110 and an antenna assembly 120. The circuit board 110 includes a first region 111 and a second region 112, which are adjacent and connected. The antenna assembly 120 includes an antenna substrate 121, a first radiator 122, a second radiator 123, and a third radiator 124. The antenna substrate 121 is arranged on the first region 111. The first radiator 122, the second radiator 123, and the third radiator 124 are arranged on the antenna substrate 121. The first radiator 122, the second radiator 123, and the third radiator 124 are used to make the patch antenna 100 work in a target frequency band.

[0034] In this way, the first radiator 122, the second radiator 123, and the third radiator 124 can generate resonance signals of multiple different frequencies through separate radiation and mutual coupling, thereby improving the antenna bandwidth and covering the target operating frequency band. At the same time, all the radiators of the patch antenna 100 are integrated on the antenna substrate 121, effectively reducing the size and the area of the circuit board 110 occupied by the antenna assembly 120, so that more elements can be arranged on the circuit board 110, improving the space utilization of the circuit board 110, and further improving the internal space utilization of the terminal device equipped with the patch antenna 100.

[0035] In the embodiment, the circuit board 110 can be a rectangle. The first region 111 is located at one end of the rectangle in the direction of the long side, and the other part is the second region 112. The area of the first region 111 is smaller than that of the second region 112. In addition, the first region 111 can be preferentially arranged as a clear area of the circuit board 110 to avoid or reduce the negative impact on the signal transmission and reception of the antenna assembly 120. The second region 112 can be used to arrange other electronic components or provide space to fix other parts of the electronic device equipped with the patch antenna 100, for example, the patch antenna 100 can be fixed to the shell of the electronic device by screws.

[0036] Referring to Figure 3 and Figure 4 In some possible solutions, the antenna substrate 121 has a bottom surface 121a facing the circuit board 110 and a top surface 121b away from the circuit board 110. The first radiator 122 and the second radiator 123 are connected and arranged on the top surface 121b. The third radiator 124 is arranged on the bottom surface 121a. In other words, the third radiator 124 is arranged between the circuit board 110 and the antenna substrate 121, and the three are arranged in layers, which can reduce the area of the circuit board 110 occupied by the antenna assembly 120.

[0037] In some possible implementation, the antenna substrate 121 is provided with at least one through hole 121c penetrating the top surface 121b and the bottom surface 121a, and the first radiator 122 is electrically connected to the third radiator 124 through the through hole 121c. Specifically, the inner wall of the through hole 121c can be provided with a conductive medium, such as copper, silver, gold or other conductive materials, or the through hole 121c is filled with conductive materials, and the first radiator 122 and the third radiator 124 are electrically connected through the conductive materials.

[0038] In some possible implementation, the third radiator 124 can also be bent and arranged, and a part is attached to the bottom surface 121a, and another part is attached to the side surface 121d of the antenna substrate 121. In this case, the first radiator 122 and the third radiator 124 can still be electrically connected by using the through hole 121c as described above, and the part attached to the side surface 121d can be electrically connected to the first radiator 122.

[0039] In some possible implementation, the first radiator 122 is arranged around the outer edge of the second radiator 123. For example, the first radiator 122 can start from the position where the second radiator 123 is connected. The first radiator 122 and the second radiator 123 are arranged around the second radiator 123, and a certain width of gap is reserved between the two at the remaining positions except the position where the two are connected. The position where the first radiator 122 and the second radiator 123 are connected can be regarded as the starting end of the first radiator 122, and the end of the extension of the first radiator 122 also reserves a certain width of gap with the starting end. That is, the first radiator 122, the second radiator 123 and the third radiator 124 are three different branches of one antenna. Such arrangement can make the antenna assembly 120 compact and reduce the size of the patch antenna 100.

[0040] Again referring to Figure 3 and Figure 4 In some possible implementation, the antenna substrate 121 is provided with at least one heat dissipation hole 121e penetrating the top surface 121b and the bottom surface 121a, and the heat dissipation hole 121e is located between the first radiator 122 and the second radiator 123. The heat dissipation hole 121e is arranged on the antenna substrate 121, so that the heat dissipation efficiency of the antenna assembly 120 can be improved based on the structure of the antenna assembly 120.

[0041] In a specific embodiment, two heat dissipation holes 121e are arranged, and the two heat dissipation holes 121e are respectively arranged at opposite ends of the second radiator 123. Specifically, the second radiator 123 can be in a strip shape and extend along a first direction, and the two heat dissipation holes 121e are arranged along the first direction and are located at one end of the second radiator 123 and the other end of the second radiator 123, respectively. It can be understood that the first direction can be the extension direction of the short side of the circuit board 110.

[0042] Referring to Figure 4 andFigure 5 In some possible solutions, the bottom surface 121a is provided with a first antenna pad 121f electrically connected with the first radiator 122, and the first region 111 is provided with a first circuit board pad 111a, and the first antenna pad 121f is connected with the first circuit board pad 111a. Specifically, the antenna substrate 121 can be provided with a plurality of through holes 121c to electrically connect the first radiator 122 and the first antenna pad 121f. Then, the first antenna pad 121f and the first circuit board pad 111a are fixedly connected with each other by welding. More specifically, the first antenna pad 121f and the first circuit board pad 111a can be welded by an SMT process, which can reduce the installation cost and facilitate integration.

[0043] Referring to Figure 5 In some possible solutions, the second region 112 of the circuit board 110 is provided with a matching circuit 113, and the matching circuit 113 is electrically connected with the first circuit board pad 111a, thereby being electrically connected with the first radiator 122, the second radiator 123 and the third radiator 124. In this way, the resonance of the patch antenna 100 can be adjusted by the matching circuit 113, so that the patch antenna 100 can adapt to different use scenarios. The matching circuit 113 can be formed by one or more of a capacitor, an inductor and a resistor in series and / or parallel, and can be set according to actual needs.

[0044] The patch antenna 100 further includes a test point 114 arranged on the second region 112, the test point 114 is electrically connected with the matching circuit 113, and the test point 114 is used to externally connect a test device to test the performance of the patch antenna 100.

[0045] It should be noted that in the embodiment, the third radiator 124 also simultaneously acts as an excitation structure, and when the first circuit board pad 111a is connected with electricity, the third radiator 124 can excite the first radiator 122 and the second radiator 123 by a coupling feeding or direct feeding mode.

[0046] Referring again to Figure 4 and Figure 5 In some embodiments, the bottom surface 121a is further provided with a plurality of second antenna pads 121g, and the plurality of second antenna pads 121g are arranged at intervals. The first region 111 is provided with a plurality of second circuit board pads 111b, and the plurality of second circuit board pads 111b are arranged at intervals. The plurality of second antenna pads 121g are connected with the plurality of second circuit board pads 111b one by one. The plurality of second antenna pads 121g and the plurality of second circuit board pads 111b are fixedly connected by welding, which can further strengthen the connection strength between the antenna assembly 120 and the circuit board 110. It can be understood that the second antenna pad 121g and the second circuit board pad 111b can also be fixedly connected by welding using an SMT process.

[0047] In one specific scheme, the first antenna pad 121f and the first circuit board pad 111a are both one, the second antenna pad 121g and the second circuit board pad 111b can be set to five, i.e. the total number of the antenna pads is six, and the antenna pads are arranged along the periphery of the bottom surface 121a of the antenna substrate 121 at intervals, and the total number of the circuit board pads is also six, and the circuit board pads are arranged along the periphery of the first area 111 at intervals.

[0048] It can be understood that when the patch antenna 100 is used as an LTE antenna, the first radiator 122 can be set to generate a resonant signal with a frequency of 0.7GHz-0.96GHz, the first radiator 122 and the second radiator 123 are set to be coupled to each other to generate a resonant signal with a frequency of 1.7GHz-2.3GHz, and the second radiator 123 and the third radiator 124 are set to be coupled to each other to generate a resonant signal with a frequency of 2.3GHz-2.7GHz. In this way, the linearly polarized omnidirectional radiation wave of 0.7GHz-2.7GHz can be covered.

[0049] Referring to Figure 6 , Figure 6 For the standing wave ratio curve of the patch antenna 100 of the embodiment, it can be seen that the standing wave ratio of the patch antenna 100 of the embodiment is less than 4 in the full frequency band.

[0050] Referring to Figures 7 to 9 , Figure 7 For the resonant peak efficiency curve of the patch antenna 100 of the embodiment in the frequency band of 0.7GHz-0.96GHz, Figure 8 For the resonant peak efficiency curve of the patch antenna 100 of the embodiment in the frequency band of 1.7GHz-2.3GHz, Figure 9 For the resonant peak efficiency curve of the patch antenna 100 of the embodiment in the frequency band of 2.3GHz-2.7GHz. It can be found that the maximum peak efficiency of the patch antenna 100 of the embodiment is more than 80%.

[0051] It should be noted that any feasible scheme described above in the embodiment can be set individually, or can be combined in a non-conflicting manner, and the combined scheme should also be within the scope of protection of the present application.

[0052] The embodiment of the present application also relates to an electronic device comprising the patch antenna 100 described above, which is mounted on the electronic device, and is helpful to realize the miniaturization and thin design of the electronic device, and improve the utilization efficiency of the internal space of the electronic device.

[0053] It is understandable that the present invention does not impose any specific restrictions on the type and specifications of electronic devices, that is, any electronic device that requires an antenna can be equipped with the patch antenna 100.

[0054] The patch antenna and electronic device provided by the embodiments of the present invention are introduced in detail above. Specific examples are used herein to illustrate the principles and implementation methods of the present invention. The description of the above implementation methods is only used to help understand the ideas of the present invention. There may be changes in the specific implementation methods and application scope. In summary, the contents of this specification should not be understood as limiting the present invention.

Claims

1. A patch antenna, characterized by, The patch antenna comprises: a circuit board, the circuit board comprising a first region and a second region adjacent to the first region; an antenna assembly comprising an antenna substrate, a first radiator, a second radiator and a third radiator, the antenna substrate being arranged on the first region, the first radiator, the second radiator and the third radiator being arranged on the antenna substrate, the first radiator, the second radiator and the third radiator being configured to operate the patch antenna at a target frequency band.

2. The patch antenna of claim 1, wherein: the antenna substrate has a bottom surface facing the circuit board and a top surface facing away from the circuit board, the first radiator and the second radiator are connected and arranged on the top surface, and the third radiator is arranged on the bottom surface; the antenna substrate is provided with at least one through hole penetrating the top surface and the bottom surface, and the first radiator is electrically connected to the third radiator through the through hole.

3. The patch antenna of claim 2, wherein: the first radiator is arranged around the outer edge of the second radiator.

4. The patch antenna of claim 3, wherein: the antenna substrate is provided with at least one heat dissipation hole penetrating the top surface and the bottom surface, and the heat dissipation hole is located between the first radiator and the second radiator.

5. The patch antenna of claim 4, wherein: the heat dissipation hole is two, the second radiator extends in a first direction, and the two heat dissipation holes are respectively located at opposite ends of the second radiator in the first direction.

6. The patch antenna of claim 2, wherein: the bottom surface is provided with a first antenna pad electrically connected to the first radiator, the first region is provided with a first circuit board pad, and the first antenna pad is connected to the first circuit board pad; further comprising a matching circuit arranged on the second region, and the matching circuit is electrically connected to the first circuit board pad.

7. The patch antenna of claim 6, wherein: further comprising a test point arranged on the second region, the test point is electrically connected to the matching circuit, and the test point is configured to be connected to a test device for testing the patch antenna.

8. The patch antenna of claim 2, wherein: the bottom surface is further provided with a plurality of second antenna pads, the plurality of second antenna pads are arranged at intervals, the first region is provided with a plurality of second circuit board pads, the plurality of second circuit board pads are arranged at intervals, and the plurality of second antenna pads are one-to-one connected to the plurality of second circuit board pads.

9. The patch antenna of any one of claims 1-8, wherein: the first radiator is configured to generate a resonant signal with a frequency of 0.7 GHz-0.96 GHz; the first radiator and the second radiator are coupled to generate a resonant signal with a frequency of 1.7 GHz-2.3 GHz; the second radiator and the third radiator are coupled to generate a resonant signal with a frequency of 2.3 GHz-2.7 GHz.

10. An electronic device, comprising the patch antenna of any one of claims 1-9. ​

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