Antenna and communication equipment

Abstract

The embodiment of the utility model relates to the technical field of antennas, and discloses an antenna and communication equipment, and the antenna comprises an antenna body, a grounding part, a feed part, a first radiation part and a second radiation part. The grounding part is arranged on the antenna body; the feed part is arranged on the antenna body; the first radiation part is electrically connected with the grounding part, and the first radiation part is used for forming a first working frequency band; the second radiation part is electrically connected with the grounding part, the second radiation part is used for forming a second working frequency band, and the first radiation part is of a multi-bending structure in a three-dimensional space and is arranged around the second radiation part. By means of the mode, the dual-band (900 MHz and 2.4 GHz) antenna in a small size can be achieved, good radiation performance is achieved, and the dual-band efficiency is larger than 60%.

Description

TECHNICAL FIELD

[0001] The embodiment of the present application relates to the technical field of antennas, in particular to an antenna and a communication device. BACKGROUND

[0002] IFA antenna (Inverted F Antenna) is a new concept antenna developed on the basis of fusing PI FA and monopole antennas. The IFA antenna has many advantages of monopole antenna, such as low profile, small size, high efficiency, sufficient bandwidth and strong anti-interference ability of PI FA antenna.

[0003] In the implementation process of the embodiment of the present application, the inventor finds that at present, as an important part of smart home, the market demand of smart doorbell grows rapidly, the smart doorbell needs to be connected to a WI FI network, but it is difficult to realize a multi-band antenna in a small size product, and it is difficult to realize a 900MHz and 2.4GHz dual-band high-efficiency antenna in a small size in the prior art, and a conventional antenna needs a long branch in a low frequency band, which is not conducive to miniaturization design. CONTENT OF THE UTILITY MODEL

[0004] The technical problem solved by the embodiment of the present application is to provide an antenna capable of realizing a dual-band (900MHz and 2.4GHz) antenna in a small size, having good radiation performance, and the dual-band efficiency being greater than 60%.

[0005] To solve the above technical problem, one technical scheme adopted by the embodiment of the present application is to provide an antenna, comprising an antenna body, a grounding part, a feeding part, a first radiation part and a second radiation part; the grounding part is arranged on the antenna body; the feeding part is arranged on the antenna body; the first radiation part is electrically connected with the grounding part, and is used for forming a first working frequency band; the second radiation part is electrically connected with the grounding part, and is used for forming a second working frequency band, wherein the first radiation part has a multi-bending structure in a three-dimensional space, and is arranged around the second radiation part.

[0006] Optionally, the grounding part and the feeding part are arranged at edges of the metal plate respectively, and the feeding part and the grounding part are arranged on the same side.

[0007] Optionally, the grounding part comprises a first grounding section arranged horizontally and a second grounding section arranged vertically, and the first grounding section and the second grounding section are connected with each other perpendicularly.

[0008] Optionally, the feeding part comprises a first feeding section arranged horizontally and a second feeding section arranged vertically, and the first feeding section and the second feeding section are connected with each other perpendicularly.

[0009] Optionally, the first radiation part comprises a plurality of first connection segments connected in sequence, and two adjacent first connection segments are arranged on different planes.

[0010] Optionally, the first radiation part and the second radiation part are arranged on the same side of the antenna body.

[0011] Optionally, the first radiation part comprises at least three bending parts, and an included angle is arranged between two adjacent bending parts.

[0012] Optionally, the length of the first radiation part corresponds to 1 / 4 wavelength of the first working frequency band, the second radiation part has a linear structure, and the length of the second radiation part corresponds to 1 / 4 wavelength of the second working frequency band.

[0013] Optionally, the feeding part is provided with a matching circuit, and the matching circuit comprises at least one inductive element and at least one capacitive element.

[0014] To solve the above technical problems, another technical scheme adopted by the embodiment of the present application is to provide a communication device.

[0015] The embodiment of the present application provides an antenna, which comprises an antenna body, a grounding part, a feeding part, a first radiation part and a second radiation part; the grounding part is arranged on the antenna body; the feeding part is arranged on the antenna body; the first radiation part is electrically connected with the grounding part, and the first radiation part is used for forming a first working frequency band; the second radiation part is electrically connected with the grounding part, and the second radiation part is used for forming a second working frequency band; wherein the first radiation part has a multi-bending structure in a three-dimensional space, and is arranged around the second radiation part; through the above arrangement, the first radiation part and the second radiation part are arranged in a limited space to radiate two different working frequency bands, the space utilization is improved, the size of the antenna is reduced, the miniaturization of a low-frequency antenna is realized, and good radiation performance is realized by combining a matching element tuning. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical scheme in the specific embodiments of the present application or the prior art, the drawings needed to be used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, each element or part is not necessarily drawn according to the actual proportion.

[0017] Figure 1 is a schematic view of the antenna according to an embodiment of the present application;

[0018] Figure 2 is another schematic view of the antenna according to an embodiment of the present application;

[0019] Figure 3 is another angle view of the antenna according to an embodiment of the present application.

[0020] The reference signs in the detailed description are as follows: 100, antenna body; 10, grounding portion; 20, feeding portion; 30, first radiating portion; 40, second radiating portion; 101, first grounding section; 102, second grounding section; 201, first feeding section; 202, second feeding section; 301, first connecting section; 311, bending portion. Detailed description

[0021] In order to facilitate the understanding of the present application, the present application will be described in more detail below in conjunction with the drawings and specific embodiments. It should be noted that when an element is described as being "fixed to" another element, it can be directly on the other element or one or more intervening elements can be present therebetween. When an element is described as being "connected to" another element, it can be directly connected to the other element or one or more intervening elements can be present therebetween. The terms "upper", "lower", "inner", "outer", "vertical", "horizontal", and the like used in the present specification indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", and the like are only for the purpose of description and cannot be understood as indicating or implying relative importance.

[0022] Unless otherwise defined, all technical and scientific terms used in the present specification have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. The terms used in the specification of the present application are only for the purpose of describing specific embodiments and are not intended to limit the present application. The term "and / or" used in the present specification includes any and all combinations of one or more related listed items.

[0023] In addition, the technical features involved in the different embodiments of the present application described below can be combined with each other as long as there is no conflict.

[0024] Please refer to Figure 1The antenna 200 comprises: an antenna body 100, a grounding portion 10, a feeding portion 20, a first radiating portion 30 and a second radiating portion 40, the grounding portion 10 is arranged on the antenna body 100; the feeding portion 20 is arranged on the antenna body 100; the first radiating portion 30 is electrically connected with the grounding portion 10, and the first radiating portion 30 is used for forming a first working frequency band; the second radiating portion 40 is electrically connected with the grounding portion 10, and the second radiating portion 40 is used for forming a second working frequency band, wherein the first radiating portion 30 is in a multi-bending structure in a three-dimensional space and is arranged around the second radiating portion 40, and the above arrangement constitutes the antenna 200 in the application and is suitable for 900MHz and 2.4GHz dual-frequency communication.

[0025] In the embodiment of the application, the antenna body 100 is made of a metal plate, and the metal plate is made of copper material with good electrical conductivity, for example, the thickness is 0.2mm. The length of the metal plate is 30mm, and the width is 15mm, which provides a stable bearing platform for subsequent functional components.

[0026] Please refer to Figure 2 The grounding portion 10 and the feeding portion 20 are arranged on the edges of the antenna body 100, and the feeding portion 20 and the grounding portion 10 are arranged on the same side and adopt an inverted "L" shape structure. Specifically, the grounding portion 10 comprises a horizontally arranged first grounding segment 101 and a vertically arranged second grounding segment 102, and the first grounding segment 101 and the second grounding segment 102 are connected with each other perpendicularly. The first grounding segment 101 and the second grounding segment 102 are connected with each other perpendicularly to form an inverted "L" shape structure, thereby enhancing the grounding effect. The grounding portion 10 adopts the structure that the horizontally arranged first grounding segment 101 and the vertically arranged second grounding segment 102 are connected with each other perpendicularly, thereby enhancing the mechanical strength of the antenna 200, helping to form a stable ground plane, improving the radiation performance of the antenna 200, and facilitating electrical connection with the mainboard of the equipment.

[0027] The feeding portion 20 comprises a horizontally arranged first feeding segment 201 and a vertically arranged second feeding segment 202, and the first feeding segment 201 and the second feeding segment 202 are connected with each other perpendicularly. Further, the first grounding segment 101 and the second grounding segment 102 are connected with each other perpendicularly to form an inverted "L" shape structure, thereby enhancing the grounding effect. The feeding portion 20 adopts the structure that the horizontal segment and the vertical segment are combined, thereby facilitating input and output of signals. The feeding portion 20 is provided with a matching circuit, and the matching circuit comprises at least one inductive element and at least one capacitive element. The matching circuit is arranged on the feeding portion 20, and the inductive element and the capacitive element are matched to realize accurate matching of the impedance of the antenna 200. The arrangement of the matching circuit effectively improves the return loss characteristic of the antenna 200.

[0028] Please refer to Figure 3 The first radiation part 30 is electrically connected with the ground part 10, and is used for forming a first working frequency band of 900MHz. The first radiation part 30 comprises a plurality of first connection sections 301 connected in sequence. Two adjacent first connection sections 301 are arranged on different planes, and the included angle between two adjacent first connection sections 301 is 90 degrees. The first radiation part 30 further comprises at least three bending parts 311. An included angle is arranged between two adjacent bending parts 311. In the embodiment of the present application, the included angle between two adjacent bending parts 311 is preferably 90 degrees. The first radiation part 30 is effectively reduced in size by the multiple bending design. The arrangement of a plurality of first connection sections 301 on different planes improves the space utilization. The 90-degree included angle between adjacent bending parts 311 ensures the structural strength and facilitates signal radiation. The length of the first radiation part 30 corresponds to the 1 / 4 wavelength of the 900MHz frequency band, thereby ensuring good working performance of the low frequency band.

[0029] Further, the first radiation part 30 and the second radiation part 40 are arranged on the same side of the antenna body 100. The second radiation part 40 is electrically connected with the ground part 10, and is used for forming a second working frequency band of 2.4GHz. The second radiation part 40 adopts a straight line structure, thereby simplifying the design of the 2.4GHz high frequency radiation unit. The length of the second radiation part 40 corresponds to the 1 / 4 wavelength of the 2.4GHz frequency band, thereby ensuring the radiation efficiency of the high frequency band. The second radiation part 40 is arranged around the first radiation part 30, thereby reducing the mutual coupling effect between the two radiation parts.

[0030] In the embodiment of the present application, the first radiation part 30 and the second radiation part 40 are arranged on the same side of the antenna body 100, thereby simplifying the overall structure of the antenna 200. The reasonable layout of the two radiation parts reduces the overall size of the antenna 200. By optimizing the relative positions of the two radiation parts, the space utilization efficiency of the antenna 200 is improved.

[0031] The embodiment of the application provides an antenna 200, which comprises an antenna body 100, a grounding part 10, a feeding part 20, a first radiating part 30 and a second radiating part 40; the grounding part 10 is arranged on the antenna body 100; the feeding part 20 is arranged on the antenna body 100; the first radiating part 30 is electrically connected with the grounding part 10, and the first radiating part 30 is used for forming a first working frequency band; the second radiating part 40 is electrically connected with the grounding part 10, and the second radiating part 40 is used for forming a second working frequency band, wherein the first radiating part 30 is in a multiple bending structure in a three-dimensional space and is arranged around the second radiating part 40; through the above arrangement, the first radiating part 30 and the second radiating part 40 are arranged in a limited space to radiate two different working frequency bands, the space utilization is improved, the size of the antenna 200 is reduced, the miniaturization of the low-frequency antenna 200 is realized, the matching element is combined for tuning, and good radiation performance is realized.

[0032] In addition to the above-mentioned embodiments, the utility model can also have the following change forms:

[0033] Embodiment two:

[0034] On the basis of the first embodiment, the bending structure of the first radiating part can be adjusted. For example, the number of bending of the first radiating part is increased to five, and the length of each connecting segment is correspondingly reduced, so that the total length is still maintained at about 1 / 4 wavelength. For example, the lengths of the five connecting segments can be 12mm, 10mm, 8mm, 7mm and 6mm respectively. This design can further reduce the overall height of the antenna.

[0035] Embodiment three:

[0036] The matching circuit can adopt different element combination modes. For example, a combination of two inductance elements and one capacitance element can be used, wherein the inductance value of the first inductance element is 3.3nH, the inductance value of the second inductance element is 1.8nH, and the capacitance value of the capacitance element is 1.0pF. This matching mode can obtain better impedance matching characteristics in a specific frequency band.

[0037] Embodiment four:

[0038] The relative position relationship between the first radiating part and the second radiating part can be changed. For example, the second radiating part can be arranged on one side of the space formed by the bending of the first radiating part instead of the central position. This design can obtain better directional performance in a specific application scenario.

[0039] Embodiment five:

[0040] The size of the grounding part and the feeding part can also be adjusted appropriately. For example, the length of the first grounding section can be increased to 6mm, the length of the second grounding section can be increased to 4mm, and the size of the feeding part can be adjusted accordingly, so that the length of the first feeding section is 5mm and the length of the second feeding section is 3mm. This design can enhance the grounding effect of the antenna.

[0041] Embodiment six:

[0042] The material of the antenna body can be other metals with good conductivity, such as aluminum alloy, etc. At the same time, the thickness of the metal plate can be appropriately adjusted, for example, increased to 0.3mm, to improve the structural strength.

[0043] Embodiment seven:

[0044] The included angle between the first radiation part and the adjacent bending part can not be limited to 90 degrees, and can be adjusted within the range of 80 to 100 degrees to adapt to different installation space requirements. This change will not significantly affect the electrical performance of the antenna, but can provide more flexible installation options.

[0045] Embodiment eight:

[0046] A fixing structure such as a fixing hole or a buckle can be added to the antenna body to facilitate the assembly of the antenna with other devices. The position and number of the fixing structure can be designed according to the actual application requirements.

[0047] Those skilled in the art should understand that the above embodiments are only preferred technical solutions of the present application, and should not be regarded as limiting the present application. The protection scope of the present application should be subject to the content of the claims.

[0048] The present application also provides a communication device comprising the above-mentioned antenna 200. For the specific structure and function of the communication device, please refer to the above-mentioned embodiments, which will not be repeated here.

[0049] The above is only an embodiment of the present application, and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation, or direct or indirect application in other related technical fields, is also included in the patent protection scope of the present application.

Claims

1. An antenna, characterized by The antenna comprises: an antenna body; a grounding portion arranged on the antenna body; a feeding portion arranged on the antenna body; a first radiating portion electrically connected with the grounding portion, the first radiating portion being used for forming a first working frequency band; a second radiating portion electrically connected with the grounding portion, the second radiating portion being used for forming a second working frequency band, wherein the first radiating portion is in a multi-bending structure in a three-dimensional space and is arranged around the second radiating portion.

2. The antenna according to claim 1, characterized in that, The grounding portion and the feeding portion are respectively arranged on edges of the antenna body, and the feeding portion and the grounding portion are arranged on the same side.

3. The antenna of claim 2, wherein, The grounding portion comprises a first grounding segment arranged horizontally and a second grounding segment arranged vertically, and the first grounding segment and the second grounding segment are connected with each other perpendicularly.

4. The antenna of claim 1, wherein, The feeding portion comprises a first feeding segment arranged horizontally and a second feeding segment arranged vertically, and the first feeding segment and the second feeding segment are connected with each other perpendicularly.

5. The antenna according to claim 1, wherein, The first radiating portion comprises a plurality of first connecting segments connected in sequence, and adjacent two first connecting segments are arranged on different planes.

6. The antenna according to claim 1, wherein, The first radiating portion and the second radiating portion are both arranged on the same side of the antenna body.

7. The antenna according to claim 6, characterized in that The first radiating portion comprises at least three bending portions, and an included angle is arranged between adjacent two bending portions.

8. The antenna according to claim 7, wherein: a length of the first radiating portion corresponds to 1 / 4 wavelength of the first working frequency band, the second radiating portion is in a straight line structure, and a length of the second radiating portion corresponds to 1 / 4 wavelength of the second working frequency band.

9. The antenna according to claim 1, wherein: a matching circuit is arranged on the feeding portion, and the matching circuit comprises at least one inductive element and at least one capacitive element.

10. A communication device, characterized by An antenna as claimed in any one of claims 1-9.

Images