Antenna assembly and intelligent device

Abstract

The present invention is applicable to the field of antenna technology, and provides an antenna assembly and a smart device. The antenna assembly includes a dielectric substrate having a first surface and a second surface arranged opposite to each other, a radiator, a grounding portion, a feeder, a first grounding branch and a second grounding branch. The radiator and the feeder are arranged on the first surface of the dielectric substrate, the first grounding branch and the second grounding branch are both connected between the radiator and the grounding portion, and the connection point between the first grounding branch and the radiator and the connection point between the second branch and the radiator are respectively located on both sides of the feeder. The present invention arranges the first grounding branch and the second grounding branch on both sides of the feeder, so that the radiator has the characteristics of a balanced antenna, and the radiator radiates and receives signals more balanced, which reduces the influence of metal structures or routing that may be applied to the antenna assembly when applied to smart devices, and has better performance, is applicable to different smart devices, and has a wide range of applications.

Description

Technical Field

[0001] The present invention belongs to the technical field of antennas, and in particular relates to an antenna component and a smart device. Background Art

[0002] At present, modular radio frequency cards are widely used in IOT (Internet of Things) devices. Most hardware vendors make minor modifications to their products by adding radio frequency modules to complete unlimited intelligent design. However, radio frequency performance is often not confirmed and guaranteed under this simple and rough modification. On the one hand, the reason is that the layout of the radio frequency module is not good. On the other hand, the antenna performance in the general module radio frequency block is mostly unbalanced design, such as inverted F-type antenna or monopole antenna. The antenna performance is easily affected by the product power drive line routing and the surrounding metal structure distribution, resulting in frequency deviation or performance degradation, which makes the same radio frequency module card have different characteristics in different application scenarios, and also increases the difficulty of design and the time of repeated verification. Summary of the invention

[0003] The purpose of the present invention is to provide an antenna assembly, aiming to solve the technical problem that the antenna is easily affected by the product power drive circuit routing or the surrounding metal structure and has poor performance.

[0004] The present invention is implemented as follows: an antenna assembly comprises:

[0005] A dielectric substrate, comprising a first surface and a second surface arranged opposite to each other;

[0006] A radiator, disposed on the first surface of the dielectric substrate;

[0007] A grounding portion, provided on the first surface and / or the second surface;

[0008] A feeder line, disposed on the first surface and connected to the radiator;

[0009] A first grounding branch connected between the radiator and the grounding portion; and

[0010] A second grounding branch, spaced apart from the first grounding branch and connected between the radiator and the grounding portion;

[0011] Wherein, a connection point between the first grounding branch and the radiator and a connection point between the second branch and the radiator are respectively located on two sides of the feeder line.

[0012] In one embodiment, the first grounding branch is disposed on the first surface, a through hole is disposed on the dielectric substrate, and the second grounding branch is disposed on the second surface and connected to the radiator via the through hole.

[0013] In one embodiment, the grounding portion includes:

[0014] A first grounding area, disposed on the first surface and connected to the first grounding branch; and

[0015] The second grounding area is disposed on the second surface and connected to the second grounding branch.

[0016] In one embodiment, the first grounding area and the second grounding area are independent of each other or connected to each other.

[0017] In one embodiment, the first grounding branch and the second grounding branch are both disposed on the first surface.

[0018] In one embodiment, the antenna assembly further includes a lumped assembly, which is disposed on the first surface and connected between the radiator and the first ground branch.

[0019] Another object of the present invention is to provide an intelligent device, comprising a power driving component, a radio frequency component electrically connected to the power driving component, and the antenna component described in the above embodiments, wherein the radio frequency component is connected to the antenna component and feeds power to the antenna component.

[0020] In one embodiment, the power driving component and the radio frequency component are both disposed on a dielectric substrate of the antenna component.

[0021] In one embodiment, the radio frequency component is disposed on a dielectric substrate of the antenna component; and the power driving component is disposed on a power driving substrate.

[0022] In one embodiment, the smart device is a smart lamp, which includes a shell and a light source board. The shell has a accommodating space, and the power driving component, the radio frequency component and the light source board are arranged in the shell in sequence; the radiator of the antenna component passes through the first opening on the light source board and protrudes from the outside of the light source board.

[0023] The antenna assembly provided by the present invention comprises a dielectric substrate having a first surface and a second surface arranged opposite to each other, a radiator, a grounding portion, a feeder line, a first grounding branch and a second grounding branch, wherein the first grounding branch and the second grounding branch are both connected between the radiator and the grounding portion, wherein the connection point between the first grounding branch and the radiator and the connection point between the second grounding branch and the radiator are respectively located on both sides of the feeder line, so that the radiator has the characteristics of a balanced antenna, the radiator radiates and receives signals more balanced, reduces the influence of metal structures or wiring, etc., which may be suffered by the antenna assembly when it is applied to smart devices, has better performance, is applicable to different smart devices, and has a wide range of applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a front structural diagram of an antenna assembly provided by an embodiment of the present invention;

[0025] Figure 2 is a back structural diagram of an antenna assembly provided by an embodiment of the present invention;

[0026] Figure 3 is a three-dimensional exploded view of a smart lamp provided by an embodiment of the present invention;

[0027] Figure 4 is a cross-sectional view of a smart lamp provided by an embodiment of the present invention;

[0028] Figure 5 is a structural diagram of a light source board of a smart lamp provided by an embodiment of the present invention;

[0029] Figure 6 is a front view of a driving component of a smart lamp provided by an embodiment of the present invention;

[0030] Figure 7 It is a side view of a driving component of a smart lamp provided in an embodiment of the present invention.

[0031] The meanings of the marks in the figure are:

[0032] Antenna assembly 100, dielectric substrate 14, radiator 13, first grounding branch 11, second grounding branch 12, lumped assembly 15, first surface 141, second surface 142, through hole 143, grounding portion 16, first grounding area 161, second grounding area 162, feed line 17, extension end 18;

[0033] Smart lamp 200, lamp holder 21, shell 22, lamp cover 23, driving module 24, power driving substrate 240, power driving component 241, output terminal 242, heat dissipation substrate 25, second opening 251, light source board 26, light emitting element 261, input terminal 262, first opening 263. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0035] It should be noted that when a component is referred to as being "fixed on" or "disposed on" another component, it may be directly or indirectly on the other component. When a component is referred to as being "connected to" another component, it may be directly or indirectly connected to the other component. The orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", etc. is based on the orientation or positional relationship shown in the accompanying drawings and is only for the convenience of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation of this patent. The terms "first" and "second" are only used for the convenience of description and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features. "Multiple" means two or more, unless otherwise clearly and specifically defined.

[0036] In order to illustrate the technical solution of the present invention, a detailed description is given below in conjunction with specific drawings and embodiments.

[0037] See also Figure 1 and Figure 2 The present invention first provides an antenna assembly 100, including a dielectric substrate 14 and a radiator 13, a feed line 17, a grounding portion 16, a first grounding branch 11 and a second grounding branch 12 arranged on the dielectric substrate 14. The dielectric substrate 14 has a front surface and a back surface. Of course, the front surface and the back surface are only for distinction, and are defined as a first surface 141 and a second surface 142 respectively.

[0038] The radiator 13 is disposed on the first surface 141, the feeder 17 is disposed on the first surface 141 and connected to the radiator 13, the first grounding branch 11 is disposed on the first surface 141 and connected between one end of the radiator 13 and the grounding portion 16, the second grounding branch 12 is connected between the radiator 13 and the grounding portion 16, and the connection point between the first grounding branch 11 and the radiator 13 and the connection point between the second grounding branch 12 and the radiator 13 are respectively located on both sides of the feeder 17. The grounding portion 16 can be disposed on the first surface 141 or the first surface 142, and can also be disposed on both the first surface 141 and the first surface 142.

[0039] The antenna assembly 100 provided by the present invention includes a radiator 13, a grounding portion 16, a feeder line 17, a first grounding branch 11 and a second grounding branch 12, which are arranged on a dielectric substrate 14, wherein the connection point between the first grounding branch 11 and the radiator 13 and the connection point between the second grounding branch 12 and the radiator 13 are respectively located on both sides of the feeder line 17, so that the radiator 13 has the characteristics of a balanced antenna, and the radiator 13 radiates and receives signals outwardly in a more balanced manner, thereby reducing the influence of metal structures or wiring that may be applied to the antenna assembly 100 when it is applied to smart devices, thereby improving performance, improving applicability to different smart devices and structures, and increasing its application range.

[0040] In one embodiment, the second grounding branch 12 is also disposed on the first surface 141 , so that the first grounding branch 11 and the second grounding branch 12 are located on the same side of the dielectric substrate 14 but are spaced apart, and the first grounding branch 11 and the second grounding branch 12 perform balanced grounding on the radiator 13 from the left and right sides of the feed line 17 .

[0041] In one embodiment, the first grounding branch 11 and the second grounding branch 12 may also be located on different sides of the dielectric substrate 14. Figure 1 and Figure 2 , a through hole 143 is provided on the dielectric substrate 14, the second grounding branch 12 is provided on the second surface 142, and is connected to the radiator 13 on the first surface 141 via the through hole 143 (that is, the connection point between the second grounding branch 12 and the radiator 13 is located in the through hole 143). Optionally, the through hole 143 is provided at a position on the dielectric substrate 14 covered by the radiator 13, so that the connection between the second grounding branch 12 and the radiator 13 can be achieved by only filling a portion of the conductive material in the through hole 143.

[0042] An extension end 18 is further extended from a side of the first ground branch 11 away from the radiator 13 to match the input impedance.

[0043] The radiator 13 is used to radiate the current signal outward in the form of electromagnetic waves and convert the received electromagnetic wave signal into a current signal. The radiator 13 can be arranged in the form of a straight strip, a curved strip, or a bent strip. In this embodiment, in order to match the shape of the dielectric substrate 14, the radiator 13 is arranged in a bent strip. Further, the radiator 13 and the extended end 18 are arranged in a rectangular shape with an opening. The feeder 17, the first grounding branch 11, the second grounding branch 12, etc. are all connected to one side of the radiator 13 close to the grounding portion 16. The length of the radiator 13 determines the operable RF frequency. In a specific embodiment, the length of the radiator 13 is one quarter of the operating wavelength. For example, for a signal frequency of 2.4 GHz, the operating wavelength is 125 mm, and the length of the radiator 13 is 31.25 mm. For a signal frequency of 5 GHz, the operating wavelength is 60 mm, and the length of the radiator 13 is 15 mm. Of course, the antenna assembly 100 of the present invention can also be applied to other signal frequencies, without limitation.

[0044] In one embodiment, the grounding portion 16 is only disposed on the first surface 141. When the first grounding branch 11 and the second grounding branch 12 are both disposed on the first surface 141, the first grounding branch 11 and the second grounding branch 12 can easily achieve connection with the grounding portion 16, so no further description or illustration is given. When the first grounding branch 11 and the second grounding branch 12 are disposed on different sides of the dielectric substrate 14, the end of the second grounding branch 12 connected to the grounding portion 16 can be routed to the first surface 141 via the side end surface of the dielectric substrate 14, which has the same effect on the radiator 13 and does not affect the implementation of the present invention. This solution can be determined according to the specific structure to be disposed in the antenna assembly 100. For example, this solution can be considered when it is not suitable to dispose a grounding area on one side of the second surface 142 due to the arrangement of other structures.

[0045] Preferably, in the case where the first grounding branch 11 and the second grounding branch 12 ground the radiator 13 from different sides of the dielectric substrate 14, as shown in FIG. Figure 1 and Figure 2 As shown, the grounding portion 16 includes a first grounding area 161 disposed on the first surface 141 and a second grounding area 162 disposed on the second surface 142. The first grounding branch 11 is connected to the first grounding area 161, and the second grounding branch 12 is connected to the second grounding area 162. This facilitates the design of the first grounding branch 11 and the second grounding branch 12.

[0046] It should be noted that the first grounding area 161 and the second grounding area 162 can be independent of each other, and a grounding loop is formed from the radiator 13 to the first grounding area 161, and another grounding loop is formed from the radiator 13 to the second grounding area 162; the first grounding area 161 and the second grounding area 162 can also be connected to each other, and they are still essentially a total grounding area, which does not affect the implementation of the present invention.

[0047] Understandably, Figure 1 and Figure 2 In the embodiment, the first grounding area 161 and the second grounding area 162 do not completely cover the first surface 141 and the second surface 142 in order to visually distinguish the first grounding area 161 from the first surface 141 and the second grounding area 162 from the second surface 142. The areas of the first grounding area 161 and the second grounding area 162 can be set according to specific circumstances. For example, when no other structure is required on the second surface 142, the second grounding area 162 can completely cover the second surface 142.

[0048] The area of ​​the grounding portion 16 affects the radiation performance of the radiator 13. The first grounding area 161 and the second grounding area 162 can provide a larger area of ​​the grounding portion 16, avoiding the limitation that a part of the available grounding portion 16 is occupied by other wiring in the specific application of the antenna assembly 100.

[0049] like Figure 2 As shown, the antenna assembly 100 further includes a lumped assembly 15 , which is disposed on the first surface 141 and connected between the radiator 13 and the grounding portion 16 , and specifically can be connected in series between the radiator 13 and the first grounding branch 11 .

[0050] The lumped component 15 is used to match the input impedance of the antenna component 100, so that the matched transmission signal is radiated outward through the radiator 13. Specifically, the lumped component 15 can be an inductor component.

[0051] The inductance value of the inductor component can be adjusted to further optimize the adjustment of the input impedance, and the antenna component 100 of the same size (length of the radiator 13) can be adapted to different products, thereby improving the application range of the antenna component 100.

[0052] The feeder 17 is disposed on the first surface 141 and connected to the radiator 13, and is used to input signals to the radiator 13. Specifically, the feeder 17 can be disposed on a side of the lumped component 15 away from the first grounding branch 11, which does not affect the implementation of the present invention.

[0053] The present invention further provides a smart device, including the antenna assembly 100 described in the above embodiments. The smart device can be any device that requires a radio frequency component and an antenna assembly 100, such as a smart lamp 200, a smart sensor, a smart power supply, etc. Below, taking a smart lamp 200 as an example, the installation and use of the antenna assembly 100 of the present invention in a smart device is specifically described.

[0054] See also Figure 3 The smart lamp 200 provided in the embodiment of the present invention includes a lamp holder 21, a shell 22 and a lampshade 23. The shell 22 has a storage space, and the lamp holder 21 and the lampshade 23 enclose the storage space. Inside the storage space, a driving module 24, a heat dissipation substrate 25 and a light source board 26 are sequentially arranged along the direction from the lamp holder 21 to the lampshade 23.

[0055] The driving module 24 includes a power driving component 241, an antenna component 100 and a radio frequency component (not shown). The power driving component 241 is connected to an external power source through the lamp holder 21, and converts external AC power into DC power to supply the light source board 26 and the antenna component 100. Signals are transmitted between the radio frequency component and the antenna component 100. The antenna component 100 further receives signals and in turn controls the power supply of the power driving component 241 to the light source board 26 through the radio frequency component, thereby controlling the working state of the light source board 26.

[0056] In one embodiment, if Figure 6 and 7As shown, the RF component is arranged on the dielectric substrate 14 of the antenna component 100 to form a modular RF card, and the power driving component 241 is arranged on the power driving substrate 240, and the connection between the power driving component 241 and the antenna component 100 is further realized by connecting the dielectric substrate 14 and the power driving substrate 240.

[0057] Specifically, the dielectric substrate 14 and the power driving substrate 240 are arranged perpendicular to each other.

[0058] In one embodiment, the power driving component 241 and the radio frequency component can also be arranged on the dielectric substrate 14 of the antenna component 100. The dielectric substrate 14 is a printed circuit of the smart lamp 200. Therefore, in this embodiment, the driving module 24 is integrated into the printed circuit board of the smart lamp 200, and the driving module 24 has a high degree of integration.

[0059] Please refer to 3 to 5 for details. The light source board 26 is provided with a plurality of input terminals 262 and a first opening 263. The heat dissipation substrate 25 is provided with a second opening 251. The first opening 263 corresponds to a portion of the second opening 251. The power driving component 241 includes a plurality of output terminals 242. The output terminals 242 pass through the second opening 251 and are electrically connected to the input terminals 262. The antenna component 100, especially the radiator 13, passes through both the second opening 251 and the first opening 263, so that the radiator 13 protrudes from the outside of the light source board 26 to avoid the influence of the light source board 26 and the heat dissipation substrate 25 on the radiator 13.

[0060] The light source board 26 further includes a plurality of light emitting elements 261 arranged in one or more rings. The first opening 263 may be arranged at the center of the light source board 26 .

[0061] The smart lamp 200 provided by the embodiment of the present invention has an antenna component 100 including a radiator 13, a first grounding branch 11 and a second grounding branch 12 arranged on a dielectric substrate 14, wherein the first grounding branch 11 and the second grounding branch 12 are arranged in the form of being respectively located on both sides of the substrate, so that the radiator 13 has the characteristics of a balanced antenna, and the radiator 13 radiates and receives signals outwardly in a more balanced manner. Especially for the smart lamp 200, its internal power driving circuit is particularly complex. The setting of the antenna component 100 reduces the influence of the heat dissipation substrate 25, the driving power supply wiring, etc. that it may be subjected to in the smart lamp 200. The performance of the antenna component 100 is better, and the applicability to the smart lamp 200 and other smart devices is improved, and the application scope is increased.

[0062] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An antenna assembly, characterized in that: The antenna assembly is a monopole antenna or an inverted F-type antenna, and the antenna assembly includes: A dielectric substrate, comprising a first surface and a second surface arranged opposite to each other; A radiator, disposed on the first surface of the dielectric substrate; A grounding portion, provided on the first surface and / or the second surface; A feeder line, disposed on the first surface and connected to the radiator; A first grounding branch connected between the radiator and the grounding portion; and A second grounding branch, spaced apart from the first grounding branch and connected between the radiator and the grounding portion; Wherein, a connection point between the first grounding branch and the radiator and a connection point between the second grounding branch and the radiator are respectively located on two sides of the feeder line.

2. The antenna assembly according to claim 1, wherein: The first grounding branch is arranged on the first surface, a through hole is arranged on the dielectric substrate, and the second grounding branch is arranged on the second surface and connected to the radiator via the through hole.

3. The antenna assembly according to claim 2, wherein: The grounding portion comprises: A first grounding area, disposed on the first surface and connected to the first grounding branch; and The second grounding area is disposed on the second surface and connected to the second grounding branch.

4. The antenna assembly according to claim 3, characterized in that The first grounding area and the second grounding area are independent of each other or connected to each other.

5. The antenna assembly according to claim 1, wherein: The first grounding branch and the second grounding branch are both arranged on the first surface.

6. The antenna assembly according to claim 1, wherein: The antenna assembly further includes a lumped assembly, which is disposed on the first surface and connected between the radiator and the first ground branch.

7. A smart device, characterized in that: It comprises a power driving component, a radio frequency component electrically connected to the power driving component, and an antenna component as described in any one of claims 1 to 6, wherein the radio frequency component is connected to the antenna component and feeds power to the antenna component.

8. The smart device according to claim 7, characterized in that: The power driving component and the radio frequency component are both arranged on the dielectric substrate of the antenna component.

9. The smart device according to claim 7, characterized in that: The radio frequency component is arranged on the dielectric substrate of the antenna component; and the power driving component is arranged on the power driving substrate.

10. The smart device according to claim 7, characterized in that: The smart device is a smart lamp, which includes a shell and a light source board. The shell has a accommodating space. The power driving component, the radio frequency component and the light source board are arranged in the shell in sequence; the radiator of the antenna component passes through the first opening on the light source board and protrudes from the outside of the light source board.

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