Antenna and electronic equipment

Abstract

The utility model relates to an antenna and electronic equipment. The antenna comprises a first radiation branch knot, a second radiation branch knot, a feed arm and a short circuit branch knot. The feed arm is used for being connected with a feed source. The first end of the first radiation branch knot is connected with the second radiation branch knot, the second end of the first radiation branch knot is a free end, the first radiation branch knot and the second radiation branch knot are of a folded structure, and a gap is formed between the first radiation branch knot and the second radiation branch knot; the second radiation branch knot is connected with the feed arm, the second radiation branch knot is connected with the first end of the short-circuit branch knot, and the second end of the short-circuit branch knot is grounded; the feed source feeds a feed signal into the first radiation branch knot and the second radiation branch knot through the feed arm, and the first radiation branch knot and the second radiation branch knot are coupled through the slot, so that the first radiation branch knot and the second radiation branch knot both support a target frequency band. According to the technical scheme provided by the invention, the radiation efficiency of the miniaturized antenna can be improved.

Description

Technical Field

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

[0002] With the rapid development of mobile communication technology, the antennas used in small base station equipment such as pico base stations and repeater stations as well as terminal equipment have gradually diversified. In order to take into account the appearance of the entire device, built-in miniaturized antennas are usually used.

[0003] However, the current design of miniaturized antennas will have an adverse effect on the radiation efficiency of the antenna. Utility Model Content

[0004] Based on this, it is necessary to provide an antenna and an electronic device that can improve the radiation efficiency of a miniaturized antenna.

[0005] In a first aspect, the present application provides an antenna. The antenna comprises a first radiation branch, a second radiation branch, a feeding arm and a short-circuit branch, wherein the feeding arm is used to connect to a feed source;

[0006] The first end of the first radiating branch is connected to the second radiating branch, the second end of the first radiating branch is a free end, the first radiating branch and the second radiating branch are in a folded structure, and a gap is formed between the first radiating branch and the second radiating branch;

[0007] The second radiation branch is connected to the feeding arm, and the second radiation branch is connected to the first end of the short-circuit branch, and the second end of the short-circuit branch is grounded;

[0008] The feed source feeds a feed signal to the first radiation branch and the second radiation branch through the feed arm, and the first radiation branch and the second radiation branch are coupled through the gap so that the first radiation branch and the second radiation branch both support a target frequency band.

[0009] In one embodiment, the first radiation branch and the second radiation branch are in a folded structure along a first direction, and the first direction is a direction perpendicular to the height direction of the antenna.

[0010] In one embodiment, the first end of the first radiating branch is connected to the first end of the second radiating branch;

[0011] The first end of the second radiation branch is connected to the feeding arm, and the second end of the second radiation branch is connected to the first end of the short-circuit branch.

[0012] In one embodiment, the first radiation branch node is a bent structure, and the first radiation branch node includes a first radiation arm, a first bent portion, and a second bent portion;

[0013] The first end of the first radiation arm is connected to the first end of the first bending portion, the second end of the first bending portion is connected to the first end of the second radiation branch, and the second end of the first radiation arm is connected to the second bending portion to form the free end.

[0014] In one embodiment, the second radiation branch is a bent structure, the second radiation branch comprises a second radiation arm and a third bent portion, and the second end of the first bent portion is connected to the side of the third bent portion;

[0015] The first end of the second radiation arm is connected to the first end of the third bending portion, the second end of the third bending portion is connected to the feeding arm, and the second end of the second radiation arm is connected to the first end of the short-circuit branch.

[0016] In one embodiment, the feeding arm includes a first fixing portion and a feeding portion, the feeding portion is provided with a feeding point, and the feeding point is used to connect with the feed source;

[0017] One end of the feeding portion is connected to the second end of the third bending portion, and the other end of the feeding portion is connected to the first fixing portion, and the first fixing portion is used to fix the antenna.

[0018] In one embodiment, the short-circuit branch is a bent structure, and the short-circuit branch includes a short-circuit arm, a fourth bent portion, and a second fixed portion, and the fourth bent portion is connected to the side of the short-circuit arm;

[0019] The first end of the short-circuit arm is connected to the second end of the second radiation arm, and the second end of the short-circuit arm is connected to the second fixing portion, and the second fixing portion is used to fix the antenna.

[0020] In one embodiment, the first fixing portion and the second fixing portion are both used for welding to a circuit board.

[0021] In one embodiment, the first end of the first radiating branch is connected to the first end of the second radiating branch;

[0022] The first end of the second radiation branch is connected to the first end of the short-circuit branch, and the second end of the second radiation branch is connected to the feeding arm.

[0023] In one of the embodiments, the antenna further includes a matching branch connected to the feeding arm, and the matching branch is used to adjust the impedance of the antenna.

[0024] In one embodiment, the first radiation branch, the second radiation branch, the feeding arm and the short-circuit branch are made of metal material in one piece.

[0025] In a second aspect, the present application provides an electronic device. The electronic device comprises:

[0026] Electronic device body;

[0027] At least one antenna as described in any one of the first aspects above, at least one of the antennas is arranged on the electronic device body.

[0028] The antenna and electronic device described above include a first radiating branch, a second radiating branch, a feed arm and a short-circuit branch, the feed arm is used to connect to a feed source; the first end of the first radiating branch is connected to the second radiating branch, the second end of the first radiating branch is a free end, the first radiating branch and the second radiating branch are in a folded structure, and a gap is formed between the first radiating branch and the second radiating branch; the second radiating branch is connected to the feed arm, and the second radiating branch is connected to the first end of the short-circuit branch, and the second end of the short-circuit branch is grounded; the feed source transmits power to the first radiating branch and the second radiating branch through the feed arm. The radiating branch node is fed with a feeding signal, and the first radiating branch node and the second radiating branch node are coupled through a gap so that both the first radiating branch node and the second radiating branch node support the target frequency band. In this way, the folded structure of the first radiating branch node and the second radiating branch node is beneficial to reducing the volume of the antenna and meeting the miniaturization design of the antenna. Through the coupling of the first radiating branch node and the second radiating branch node, the first radiating branch node and the second radiating branch node can both support the target frequency band, and the target frequency band can be, for example, 3.3GHz-3.7GHz, thereby extending the current path in the antenna and improving the radiation efficiency of the antenna. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the conventional technology, the drawings required for use in the embodiments or the conventional technology descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0030] Figure 1 A schematic diagram of an exemplary antenna provided in an embodiment of the present application;

[0031] Figure 2 A schematic diagram of another exemplary antenna provided in an embodiment of the present application;

[0032] Figure 3 A schematic diagram of another exemplary antenna provided in an embodiment of the present application;

[0033] Figure 4 A schematic diagram of another exemplary antenna provided in an embodiment of the present application;

[0034] Figure 5a It is the transmission line pattern diagram of the traditional PIFA antenna;

[0035] Figure 5b It is a transmission line pattern diagram of the antenna of the embodiment of the present application;

[0036] Figure 6 An antenna provided in an embodiment of the present application simulates a 3D radiation pattern at 3.5 GHz;

[0037] Figure 7 An antenna simulation horizontal plane pattern provided in an embodiment of the present application;

[0038] Figure 8 A schematic diagram of antenna simulation S parameters provided in an embodiment of the present application;

[0039] Fig. 9 A schematic diagram of an antenna simulation gain curve provided in an embodiment of the present application;

[0040] Fig.10 A schematic diagram of the distribution of the four antennas provided in an embodiment of the present application on a PCBA board.

[0041] Description of reference numerals:

[0042] The first radiation branch node 100; the first radiation arm 101; the first bending portion 102; the second bending portion 103; the second radiation branch node 200; the second radiation arm 201; the third bending portion 202; the feeding arm 300; the first fixing portion 301; the feeding portion 302; the short-circuit branch node 400; the short-circuit arm 401; the fourth bending portion 402; the second fixing portion 403; the matching branch node 500. DETAILED DESCRIPTION

[0043] In order to facilitate understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. Embodiments of the present application are provided in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.

[0044] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0045] It is understood that the terms "first", "second", etc. used in this application may be used herein to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish a first element from another element. For example, without departing from the scope of this application, a first resistor may be referred to as a second resistor, and similarly, a second resistor may be referred to as a first resistor. Both the first resistor and the second resistor are resistors, but they are not the same resistor.

[0046] It can be understood that the “connection” in the following embodiments should be understood as “electrical connection”, “communication connection”, etc. if the connected circuits, modules, units, etc. have electrical signals or data transmission between each other.

[0047] It can be understood that “at least one” means one or more, “plurality” means two or more, and “at least a portion of an element” means a part or all of an element.

[0048] When used herein, the singular forms "a", "an", and "said / the" may also include plural forms, unless the context clearly indicates otherwise. It should also be understood that the terms "include / comprise" or "have" and the like specify the presence of stated features, wholes, steps, operations, components, parts, or combinations thereof, but do not exclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts, or combinations thereof. At the same time, the term "and / or" used in this specification includes any and all combinations of the relevant listed items.

[0049] With the rapid development of mobile communication technology, the antennas used in small base station equipment such as 5G (or 6G, etc.) pico base stations and repeater stations, as well as terminal devices, are gradually diversified. In order to take into account the appearance of the entire device, built-in miniaturized antennas are usually used.

[0050] Due to the limited clearance area in the device, the installation area of ​​the antenna is small and the antenna is far away from the motherboard. Therefore, a cable is used to connect the antenna to the motherboard, causing unnecessary line loss.

[0051] In addition, the built-in antennas of many home base stations, repeaters and other products are currently installed as a component above the shielding plate of the whole machine (not directly connected to the circuit board). The antenna can have a large amount of clearance area, less external reflection, high radiation efficiency, and good non-roundness coefficient; the current built-in mobile phone antenna adopts a bent structure. Because the antenna clearance area is limited, the internal space of the mobile phone needs to be used to the extreme. However, the above two methods will bring new problems: the former antenna size is too large, the connecting cable has loss, resulting in unsatisfactory antenna gain, while the product size will increase, and the product space cannot be used reasonably. The latter antenna size is small enough, but the radiation efficiency and gain of the antenna are very low, which has an adverse effect on the communication reliability of the device.

[0052] In view of this, an embodiment of the present application provides an antenna and an electronic device capable of improving the radiation efficiency of a miniaturized antenna. The antenna may be a PIFA (Planar Inverted F-shaped) antenna.

[0053] An embodiment of the present application provides an antenna, comprising a first radiating branch, a second radiating branch, a feeding arm and a short-circuit branch, wherein the feeding arm is used to be connected to a feed source, wherein a feeding point is provided on the feeding arm, and the feeding arm is connected to the feed source through the feeding point.

[0054] The first radiation branch, the second radiation branch, the feeding arm and the short-circuit branch can all be metal branches, such as sheet metal pieces, and the feeding source includes but is not limited to a radio frequency transceiver chip and a radio frequency front-end circuit.

[0055] The first end of the first radiation branch is connected to the second radiation branch, the second end of the first radiation branch is a free end, the first radiation branch and the second radiation branch are in a folded structure, and a gap is formed between the first radiation branch and the second radiation branch, and the first radiation branch and the second radiation branch can be coupled through the gap.

[0056] Optionally, the first radiating branch and the second radiating branch are in a folded structure along a first direction, the first direction being a direction perpendicular to the height direction of the antenna, and the first direction may be, for example, a length direction or a width direction of the antenna. Optionally, the first radiating branch and the second radiating branch may also be in a folded structure along the height direction of the antenna, which is not specifically limited herein.

[0057] The second radiation branch is connected to the feeding arm, and the second radiation branch is connected to the first end of the short-circuit branch. The second end of the short-circuit branch is grounded. The short-circuit branch can also be called a grounding branch, which is used to ground the antenna.

[0058] In the following, several possible connection modes of the first radiation branch, the second radiation branch, the feeding arm and the short-circuit branch are exemplarily introduced in combination with the drawings.

[0059] See also Figure 1 , Figure 1 A schematic diagram of an exemplary antenna provided in an embodiment of the present application.

[0060] like Figure 1 As shown, a feeding point ( Figure 1 As shown in G1), the part below the feeding point is the feeding arm 300, the first end of the first radiating branch node 100 is connected to the first end of the second radiating branch node 200, the first end of the second radiating branch node 200 is also connected to the feeding arm 300, the second end of the second radiating branch node 200 is connected to the first end of the short-circuit branch node 400, and the second end of the short-circuit branch node 400 is grounded.

[0061] Figure 1 In the embodiment, the first radiation branch 100 and the second radiation branch 200 are arranged in parallel along the first direction, that is, the first radiation branch 100 and the second radiation branch 200 are in a folded structure along the first direction. Figure 1 In the illustrated embodiment, the first direction is the width direction of the antenna.

[0062] See also Figure 2 , Figure 2 A schematic diagram of another exemplary antenna provided in an embodiment of the present application.

[0063] like Figure 2 As shown, a feeding point ( Figure 2 As shown in G1), the part below the feeding point is the feeding arm 300, the first end of the first radiating branch node 100 is connected to the first end of the second radiating branch node 200, the first end of the second radiating branch node 200 is also connected to the feeding arm 300, the second end of the second radiating branch node 200 is connected to the first end of the short-circuit branch node 400, and the second end of the short-circuit branch node 400 is grounded.

[0064] Figure 2 In the embodiment, the first radiation branch 100 and the second radiation branch 200 are folded along the first direction. Figure 1 Similar to the embodiment shown, Figure 2 In the illustrated embodiment, the first direction is the width direction of the antenna.

[0065] See also Figure 3 , Figure 3 Schematic diagram of another exemplary antenna provided in an embodiment of the present application

[0066] like Figure 3 As shown, a feeding point ( Figure 3 As shown in G1), the part below the feeding point is the feeding arm 300, the first end of the first radiating branch node 100 is connected to the first end of the second radiating branch node 200, the first end of the second radiating branch node 200 is also connected to the first end of the short-circuit branch node 400, the second end of the short-circuit branch node 400 is grounded, and the second end of the second radiating branch node 200 is connected to the feeding arm 300.

[0067] Figure 3 In the embodiment, the first radiation branch 100 and the second radiation branch 200 are in a folded structure along a first direction. Figure 3 In the illustrated embodiment, the first direction is the width direction of the antenna.

[0068] In this way, by folding the first radiation branch 100 and the second radiation branch 200 , the current path in the antenna can be extended without increasing the height of the antenna, which is beneficial to the miniaturized design of the antenna in the embodiment of the present application.

[0069] based on Figure 1-Figure 3 In any of the embodiments shown, the feed source feeds a feed signal to the first radiating branch node 100 and the second radiating branch node 200 through the feed arm 300, and the first radiating branch node 100 and the second radiating branch node 200 are coupled through the gap to generate resonance, so that the first radiating branch node 100 and the second radiating branch node 200 can both support the target frequency band, and the current directions in the first radiating branch node 100 and the second radiating branch node 200 are the same, thereby improving the radiation efficiency of the antenna.

[0070] In general, the folded structure of the first radiating branch 100 and the second radiating branch 200 in the above embodiment is conducive to reducing the volume of the antenna and meeting the miniaturized design of the antenna. Through the coupling of the first radiating branch 100 and the second radiating branch 200, the first radiating branch 100 and the second radiating branch 200 can both support the target frequency band, which can be, for example, 3.3 GHz-3.7 GHz, thereby extending the current path in the antenna and improving the radiation efficiency of the antenna.

[0071] In the following, the structures of the first radiation branch 100 , the second radiation branch 200 , the feeding arm 300 and the short-circuit branch 400 are described by way of example.

[0072] exist Figure 1 Based on the embodiment shown, see Figure 4 In this embodiment, the first radiation branch 100 has a bent structure, and the first radiation branch 100 includes a first radiation arm 101 , a first bent portion 102 and a second bent portion 103 .

[0073] The first radiating arm 101, the first bending portion 102 and the second bending portion 103 may be sheet metal pieces of regular shapes, such as Figure 4 As shown, the first radiation arm 101 is a rectangular parallelepiped, the second bending portion 103 is a rectangular parallelepiped, and the first bending portion 102 is an L-shaped cube. Of course, the first radiation arm 101, the first bending portion 102 and the second bending portion 103 may also be irregular shapes.

[0074] The first end of the first radiation arm 101 is connected to the first end of the first bending portion 102. Figure 4 As shown, the first end of the first radiation arm 101 is vertically connected to the first end of the first bending portion 102, that is, the angle between the first radiation arm 101 and the first bending portion 102 is 90°. Of course, the angle may also be less than 90° or greater than 90°.

[0075] The second end of the first bending portion 102 is connected to the first end of the second radiation branch 200, and the second end of the first radiation arm 101 is connected to the second bending portion 103 to form a free end. Figure 4 As shown, the second end of the first radiation arm 101 is vertically connected to the second bending portion 103. Of course, the angle between the first radiation arm 101 and the second bending portion 103 may not be 90°.

[0076] Please continue to see Figure 4 The second radiation branch node 200 has a bent structure, and the second radiation branch node 200 includes a second radiation arm 201 and a third bending portion 202. The second end of the first bending portion 102 is connected to the side of the third bending portion 202. The side of the third bending portion 202 may refer to a side where the third bending portion 202 is not connected to the second radiation arm 201 and the short-circuit branch node 400 and is away from the short-circuit branch node 400.

[0077] The second radiation arm 201 and the third bending portion 202 may be sheet metal pieces of regular shapes, such as Figure 4 As shown, the second radiation arm 201 is in a rectangular parallelepiped shape. Of course, the second radiation arm 201 and the third bending portion 202 may also be in irregular shapes, such as Figure 4 As shown (can be combined with Figure 1 )'s third bending portion 202 is an irregular cubic structure.

[0078] The first end of the second radiation arm 201 is connected to the first end of the third bending portion 202. Figure 4 As shown, the first end of the second radiation arm 201 is vertically connected to the first end of the third bending portion 202, that is, the angle between the second radiation arm 201 and the third bending portion 202 is 90°. Of course, the angle can also be less than 90° or greater than 90°.

[0079] The second end of the third bent portion 202 is horizontally connected to the feeding arm 300 , the second end of the second radiation arm 201 is connected to the first end of the short-circuit branch 400 , and the second end of the short-circuit branch 400 is grounded.

[0080] Please continue to see Figure 4 The feeding arm 300 includes a first fixing portion 301 and a feeding portion 302 . The feeding portion 302 is provided with a feeding point, and the feeding point is used to connect with a feed source.

[0081] One end of the feeding portion 302 is horizontally connected to the second end of the third bending portion 202 , and the other end of the feeding portion 302 is connected to the first fixing portion 301 , for example, it may be vertically connected. The first fixing portion 301 is used to fix the antenna.

[0082] Please continue to see Figure 4The short-circuit branch 400 has a bent structure, and the short-circuit branch 400 includes a short-circuit arm 401, a fourth bent portion 402 and a second fixed portion 403. The fourth bent portion 402 is connected to the side of the short-circuit arm 401. The side of the short-circuit arm 401 refers to a side of the short-circuit arm 401 that is not connected to the second radiation arm 201 and the second fixed portion 403 and is away from the third bent portion 202.

[0083] The short-circuit arm 401, the fourth bending portion 402 and the second fixing portion 403 can be sheet metal pieces of regular shapes, such as Figure 4 As shown, the fourth bending portion 402 and the second fixing portion 403 are in a rectangular parallelepiped shape. Of course, they can also be in an irregular shape, for example, Figure 4 The short-circuit arm 401 is shown as an L-shaped cubic structure.

[0084] The first end of the short-circuit arm 401 is connected to the second end of the second radiation arm 201, for example, vertically; the second end of the short-circuit arm 401 is connected to the second fixing portion 403, for example, vertically, and the second fixing portion 403 is used to fix the antenna.

[0085] In the embodiment of the present application, the first fixing portion 301 and the second fixing portion 403 are both used for welding with a circuit board, such as a PCBA (Printed Circuit Board Assembly) mainboard.

[0086] In traditional technology, in the design of miniaturized antennas, the cable between the antenna and the motherboard will increase the insertion loss of the RF end. In the embodiment of the present application, the antenna is directly welded on the PCBA motherboard. The antenna occupies a small area of ​​the PCBA. The antenna clearance area is reasonably designed, which reduces the loss caused by the cable and the cost of the antenna. It has almost no effect on the layout of electronic components and the installation of the shielding cover, reduces the insertion loss of the RF end, and can improve the antenna radiation efficiency, thereby improving the actual efficiency of the RF circuit. At the same time, the RF interface to the antenna feed point is directly connected by a short microstrip line, which greatly improves the radiation gain.

[0087] Please continue to see Figure 4 The antenna of the embodiment of the present application further includes a matching branch 500 , which is connected to the feeding arm 300 , and is used to adjust the impedance of the antenna.

[0088] The first radiation branch 100, the second radiation branch 200, the feed arm 300 and the short-circuit branch 400 are made of metal materials (such as sheet metal materials) in one piece. The embodiment of the present application provides a high radiation efficiency folded PIFA antenna, which is formed by sheet metal in one piece, has the advantages of good structural strength, simple structure, low processing difficulty and small size, and the size can be, for example, 10mm*8mm*10mm (0.12λ*0.12λ*0.09λ), and also has good electrical performance (antenna working bandwidth 3.3GHz-3.7GHz).

[0089] In the actual implementation process, the antenna has multiple degrees of freedom, and other operating frequencies can be achieved by adjusting each degree of freedom. The specific implementation of the antenna in the embodiment of the present application is not limited here.

[0090] The beneficial effects of the antenna according to the embodiment of the present application are exemplarily described below with reference to the drawings.

[0091] See also Figure 5a and Figure 5b , Figure 5a It is a transmission line mode diagram of a traditional PIFA antenna, where l1 represents the electrical length between the feed line and the grounding plate, l2 represents the electrical length between the feed line and the open end, Rs represents the parasitic resistance of the grounding plate, Ls represents the distributed inductance of the grounding plate, and RL and CL represent the parasitic resistance and capacitance of the open end.

[0092] Figure 5b This is a transmission line pattern diagram of the antenna in an embodiment of the present application. In addition to the distributed inductance, parasitic resistance and capacitance generated as described above, in an embodiment of the present application, the radiating branch, the feeding arm 300 and the short-circuit branch 400 are coupled. The first radiating branch 100 and the feeding point generate a distributed inductance L1 and a parasitic resistance R1. The open end of the first radiating branch 100 and the short-circuit branch 400 generate a parasitic resistance and capacitance. The antenna contains multiple parasitic units, which can enable the antenna to be well matched over a very wide bandwidth and reduce reflected energy.

[0093] See also Figure 6 and Figure 7 , Figure 6 For the antenna simulation of the present application embodiment, the 3D radiation pattern at 3.5 GHz is Figure 7 This is the simulated horizontal plane radiation pattern of the antenna of the embodiment of the present application. As shown in the figure, the horizontal plane radiation pattern of the antenna has good omnidirectionality, and the non-circularity (the non-circularity of the radiation pattern refers to the deviation of the maximum or minimum gain value from the average value in the horizontal plane radiation pattern) is less than 3dB, which meets industry requirements.

[0094] See also Figure 8 and Fig. 9 , Figure 8Schematic diagram of S parameters of antenna simulation in an embodiment of the present application, Fig. 9 The gain curve of the antenna simulation of the embodiment of the present application shows that the antenna has good electrical performance (antenna operating bandwidth 3.3GHz-3.7GHz) and a gain of 4.3-6.3dBi.

[0095] This application takes into account the complexity of the working environment of the built-in antenna. The antenna S parameters and radiation pattern are affected by the antenna's position in the product and metal parts such as heat dissipation. The design adopts an antenna vibrator formed of sheet metal in one piece. The working frequency band is a broadband omnidirectional antenna of 3.3GHz-3.7GHz, with a gain of 4.3-6.3dBi. The antenna's horizontal plane radiation pattern has good omnidirectionality, and the non-circularity is less than 3dB. It is directly welded on the PCBA to reduce feeder losses.

[0096] In one embodiment, an electronic device is provided, including an electronic device body and at least one antenna as described in any of the above embodiments, wherein the at least one antenna is disposed on the electronic device body, for example, welded on a PCBA board in the electronic device body. Fig.10 , Fig.10 For 4 antennas ( Fig.10 Schematic diagram of the distribution of vibrators 1-4) on the PCBA board.

[0097] Regarding the implementation of the antenna in this embodiment, please refer to the relevant description above and will not be repeated here.

[0098] The electronic device in the embodiments of the present application can be a mobile phone, a tablet computer, a desktop computer, a laptop computer, an e-reader, a handheld computer, an electronic display screen, a notebook computer, an ultra-mobile personal computer (UMPC), a netbook, as well as a cellular phone, a personal digital assistant (PDA), an augmented reality (AR)\virtual reality (VR) device, a media player, a smart wearable device and other foldable devices.

[0099] In the description of this specification, the description with reference to the terms "some embodiments", "other 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 description of the above terms does not necessarily refer to the same embodiment or example.

[0100] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0101] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

Claims

1. An antenna, characterized in that: It includes a first radiation branch, a second radiation branch, a feed arm and a short-circuit branch, wherein the feed arm is used to be connected to a feed source; The first end of the first radiating branch is connected to the second radiating branch, the second end of the first radiating branch is a free end, the first radiating branch and the second radiating branch are in a folded structure, and a gap is formed between the first radiating branch and the second radiating branch; The second radiation branch is connected to the feeding arm, and the second radiation branch is connected to the first end of the short-circuit branch, and the second end of the short-circuit branch is grounded; The feed source feeds a feed signal to the first radiation branch and the second radiation branch through the feed arm, and the first radiation branch and the second radiation branch are coupled through the gap so that the first radiation branch and the second radiation branch both support a target frequency band.

2. The antenna according to claim 1, characterized in that The first radiation branch and the second radiation branch are in a folded structure along a first direction, and the first direction is a direction perpendicular to a height direction of the antenna.

3. The antenna according to claim 1, characterized in that The first end of the first radiation branch is connected to the first end of the second radiation branch; The first end of the second radiation branch is connected to the feeding arm, and the second end of the second radiation branch is connected to the first end of the short-circuit branch.

4. The antenna according to claim 3, characterized in that: The first radiation branch node is a bent structure, and the first radiation branch node includes a first radiation arm, a first bent portion, and a second bent portion; The first end of the first radiation arm is connected to the first end of the first bending portion, the second end of the first bending portion is connected to the first end of the second radiation branch, and the second end of the first radiation arm is connected to the second bending portion to form the free end.

5. The antenna according to claim 4, characterized in that: The second radiation branch node is a bent structure, the second radiation branch node comprises a second radiation arm and a third bent portion, and the second end of the first bent portion is connected to the side of the third bent portion; The first end of the second radiation arm is connected to the first end of the third bending portion, the second end of the third bending portion is connected to the feeding arm, and the second end of the second radiation arm is connected to the first end of the short-circuit branch.

6. The antenna according to claim 5, characterized in that The feeding arm comprises a first fixing portion and a feeding portion, the feeding portion is provided with a feeding point, and the feeding point is used to connect with the feed source; One end of the feeding portion is connected to the second end of the third bending portion, and the other end of the feeding portion is connected to the first fixing portion, and the first fixing portion is used to fix the antenna.

7. The antenna according to claim 6, characterized in that The short-circuit branch is a bent structure, and includes a short-circuit arm, a fourth bent portion, and a second fixed portion, and the fourth bent portion is connected to the side of the short-circuit arm; The first end of the short-circuit arm is connected to the second end of the second radiation arm, and the second end of the short-circuit arm is connected to the second fixing portion, and the second fixing portion is used to fix the antenna.

8. The antenna according to claim 7, characterized in that: The first fixing portion and the second fixing portion are both used for welding to a circuit board.

9. The antenna according to claim 1, characterized in that: The first end of the first radiation branch is connected to the first end of the second radiation branch; The first end of the second radiation branch is connected to the first end of the short-circuit branch, and the second end of the second radiation branch is connected to the feeding arm.

10. The antenna according to any one of claims 1 to 9, characterized in that: The antenna further includes a matching branch connected to the feeding arm, and the matching branch is used to adjust the impedance of the antenna.

11. The antenna according to any one of claims 1 to 9, characterized in that: The first radiation branch, the second radiation branch, the feeding arm and the short-circuit branch are made of metal material in one piece.

12. An electronic device, characterized in that: include: Electronic device body; At least one antenna according to any one of claims 1-11, at least one of the antennas is arranged on the electronic device body.

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