Electronic device and antenna module

Abstract

An electronic device and an antenna module are provided. The electronic device comprises a shell, an antenna module and a feed-in piece, the antenna module comprises a first radiation part and a second radiation part; the first radiation part comprises a first support arm and a second support arm connected to the first support arm; the second radiation part comprises a first radiation part and a feed-in part; the first radiation part comprises a first section, a second section and a third section; the feed-in part is connected to the first section, the first section comprises a first branch and a second branch, and the second section is connected between the first branch and the third section; the first branch, the second section and the third section jointly form a hook-shaped structure; the first radiation part is arranged on the periphery of the second radiation part; the hook-shaped structure is farther away from the first support arm than the second branch. The electronic device and the antenna module provided by the invention have optimized antenna characteristics and can meet more stringent antenna specification requirements.

Description

Technical Field

[0001] The present invention relates to an electronic device and an antenna module, and in particular to an antenna module covering multiple frequency bands and an electronic device having the antenna module. Background Art

[0002] Current electronic devices, such as notebook computers or tablet computers, are designed to be thin and light, and the screen borders are gradually reduced. Therefore, the space for installing antennas on electronic devices is very limited. Existing antenna architectures will have the problem of insufficient bandwidth reduction under the narrow border requirements of electronic device screens.

[0003] Therefore, how to design an antenna structure that can simultaneously receive and transmit multiple wireless frequency bands and has good antenna efficiency within the limited space inside the electronic device is an important issue in the art.

[0004] Therefore, it is necessary to provide an electronic device and an antenna module to solve the above problems. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide an electronic device and an antenna module in view of the deficiencies in the prior art.

[0006] In order to solve the above-mentioned technical problems, one of the technical solutions adopted by the present invention is to provide an electronic device, which includes a shell, an antenna module and a feeding element. The antenna module is arranged in the shell. The antenna module includes a first radiating element and a second radiating element. The first radiating element includes a first arm and a second arm connected to the first arm. The second radiating element includes a first radiating portion and a feeding portion. The first radiating portion includes a first section, a second section and a third section. The feeding portion is connected to the first section. The first section includes a first branch and a second branch. The second section is connected between the first branch and the third section. The first branch, the second section and the third section together form a hook-shaped structure. The first radiating element is arranged on the periphery of the second radiating element. The hook-shaped structure is farther away from the first arm than the second branch. The feeding element is electrically connected to the feeding portion.

[0007] In order to solve the above-mentioned technical problems, another technical solution adopted by the present invention is to provide an antenna module, which includes a first radiating element and a second radiating element. The first radiating element includes a first arm and a second arm connected to the first arm. The second radiating element includes a first radiating portion and a feeding portion. The first radiating portion includes a first section, a second section and a third section. The feeding portion is connected to the first section and electrically connected to a feeding element. The first section includes a first branch and a second branch. The second section is connected between the first branch and the third section. The first branch, the second section and the third section together form a hook-shaped structure. The first radiating element is arranged on the periphery of the second radiating element. The hook-shaped structure is farther away from the first arm than the second branch.

[0008] One of the beneficial effects of the present invention is that the electronic device and antenna module provided by the present invention can optimize antenna characteristics and meet more stringent antenna specification requirements through the technical solution of "the first branch, the second section and the third section together form a hook-shaped structure, the first radiating element is arranged on the periphery surrounding the second radiating element, and the hook-shaped structure is farther away from the first branch arm than the second branch."

[0009] To further understand the features and technical contents of the present invention, please refer to the following detailed description and drawings of the present invention. However, the drawings provided are only for reference and description and are not intended to limit the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a three-dimensional schematic diagram of the electronic device of the present invention.

[0011] Figure 2 FIG. 1 is a schematic diagram of an antenna module according to a first embodiment of the present invention.

[0012] Figure 3 FIG. 4 is a schematic diagram of an antenna module according to a second embodiment of the present invention.

[0013] Main component symbols:

[0014] D Electronic Devices

[0015] H Housing

[0016] T Antenna Module

[0017] 1 First radiator

[0018] 11 First arm

[0019] 111 Short side

[0020] 12 Second arm

[0021] 12A Third longest side

[0022] 12B Fourth Longest Side

[0023] 12C First short side

[0024] 12D Second short side

[0025] 2 Second radiator

[0026] 21. First Radiation

[0027] 211 First Section

[0028] 211A First long side

[0029] 211B Second longest side

[0030] 211C Third short side

[0031] 211D Fourth short side

[0032] 2111 First Branch Road

[0033] 2112 Second Branch Road

[0034] 212 Second Section

[0035] 213 Section 3

[0036] 213A Fifth short side

[0037] 213B Sixth short side

[0038] 213C Fifth Longest Side

[0039] 22 Second Radiation

[0040] 23 Feeding section

[0041] 231 Feeding end

[0042] F Feedthrough

[0043] GP minimum spacing

[0044] VL1 First longitudinal length

[0045] VL2 Second longitudinal length

[0046] VL3 Third longitudinal length

[0047] HL1 First horizontal length

[0048] HL2 Second horizontal length

[0049] HL3 Third horizontal length

[0050] S Switching Circuit

[0051] S1 Path

[0052] SW switch

[0053] E Passive Components

[0054] R Control circuit

[0055] P Proximity Sensing Circuit

[0056] L Inductor

[0057] DL1, DL2, DL3, DL4 dotted lines DETAILED DESCRIPTION

[0058] The following is a specific embodiment to illustrate the implementation of the "electronic device and antenna module" disclosed in the present invention. Those skilled in the art can understand the advantages and effects of the present invention from the content disclosed in this specification. The present invention can be implemented or applied through other different specific embodiments, and the details in this specification can also be modified and changed based on different viewpoints and applications without departing from the concept of the present invention. In addition, the drawings of the present invention are only simple schematic illustrations, not depictions based on actual sizes, and it is stated in advance. The following implementations will further explain the relevant technical content of the present invention in detail, but the disclosed content is not intended to limit the scope of protection of the present invention. In addition, it should be understood that although the terms "first", "second", "third" and the like may be used in this article to describe various elements, these elements should not be limited by these terms. These terms are mainly used to distinguish one element from another. In addition, the term "or" used in this article should include any one or more combinations of the associated listed items depending on the actual situation. In addition, the term “connect” in the present invention means that there is a physical connection between two elements and it can be a direct connection or an indirect connection, and the term “couple” in the present invention means that two elements are separated from each other and have no physical connection, but the electric field energy generated by the current of one element excites the electric field energy of another element.

[0059] See also Figure 1 As shown, Figure 1 Schematic diagram of a three-dimensional electronic device of the present invention. The present invention provides an electronic device D, which may be a smart phone, a tablet computer, or a notebook computer, but the present invention is not limited thereto. The present invention takes the electronic device D as an example of a notebook computer. The electronic device D includes an antenna module T and a shell H, and the antenna module T is disposed in the shell H. The electronic device D can generate at least one operating frequency band through the antenna module T. In addition, for example, the antenna module T is disposed at the screen frame position of the electronic device D, but the present invention is not limited to the number and position of the antenna module T in the electronic device D.

[0060] [First embodiment]

[0061] See also Figure 2 As shown, Figure 2 FIG. 1 is a schematic diagram of an antenna module according to a first embodiment of the present invention. The first embodiment of the present invention provides an antenna module T, which includes a first radiation element 1 and a second radiation element 2 .

[0062] The first radiation element 1 includes a first arm 11 and a second arm 12 connected to each other. For example, the first arm 11 and the second arm 12 may be vertically connected to form an L-shaped structure of the first radiation element 1, but the present invention is not limited thereto. That is, the first arm 11 may not be perpendicular to the second arm 12. The second radiation element 2 includes a first radiation portion 21 and a feeding portion 23. The first radiation portion 21 includes a first section 211, a second section 212 and a third section 213, and the feeding portion 23 is connected to the first section 211. The second section 212 is connected between the first section 211 and the third section 213. Further, the first section 211 includes a first branch 2111 and a second branch 2112, the first branch 2111 extends along the negative X-axis direction relative to the feeding portion 23, and the second branch 2112 extends along the positive X-axis direction relative to the feeding portion 23. The second section 212 extends along the negative Y-axis direction relative to the first branch 2111, and the second section 212 is connected between the first branch 2111 and the third section 213, and the third section 213 extends along the positive X-axis relative to the second section 212. Thus, the first branch 2111, the second section 212, and the third section 213 together form a hook-shaped structure that bends in a counterclockwise direction. The first radiation element 1 is disposed at the periphery of the second radiation element 2, and the hook-shaped structure is further away from the first arm 11 than the second branch 2112.

[0063] Specifically, the first radiation element 1 surrounds the second radiation element 2. However, it should be noted that the surrounding mentioned here is not limited to the second radiation element 2 being surrounded by the first radiation element 1 on all sides. Figure 2 As shown, the first radiation element 1 is disposed on the right side and the upper side of the second radiation element 2 , which also satisfies the condition that the first radiation element 1 surrounds the second radiation element 2 .

[0064] The second radiating element 2 further includes a second radiating portion 22, and the second radiating portion 22 is connected to the feeding portion 23. The electronic device D further includes a feeding element F electrically connected to the feeding portion 23, and the second radiating portion 22 is closer to the feeding element F than the first radiating portion 21. In the present embodiment, the second radiating portion 22 extends along the negative X-axis direction, but the present invention is not limited thereto.

[0065] The feeding element F is used to feed a signal. The feeding element F is connected to the feeding end 231 of the feeding portion 23. Specifically, one end of the feeding portion 23 (i.e., the feeding end 231) is connected to the feeding element F, and the other end of the feeding portion 23 is connected between the first branch 2111 and the second branch 2112 from narrow to wide (along the positive Y-axis direction).

[0066] There is a minimum distance GP between the first section 211 and the second arm 12. Preferably, the minimum distance GP is less than or equal to 10 mm. Figure 2In the embodiment, the distance between the first branch 2111 and the second arm 12 is equal to the distance between the second branch 2112 and the second arm 12, but the present invention is not limited thereto. That is, the first section 211 and the second arm 12 do not need to be equidistant, and the distance between the first branch 2111 and the second arm 12 and the distance between the second branch 2112 and the second arm 12 do not necessarily have to be equal. The present invention can enhance the radiation energy of the antenna module T in the low frequency range by designing that the minimum spacing GP is less than or equal to 10 mm.

[0067] like Figure 2 As shown, the first section 211 has a first long side 211A and a second long side 211B opposite to each other, and a third short side 211C and a fourth short side 211D opposite to each other. The second arm 12 has a first short side 12C and a second short side 12D opposite to each other, and a third long side 12A and a fourth long side 12B opposite to each other. The area of ​​the second arm 12 is greater than the area of ​​the first section 211. Preferably, the area of ​​the second arm 12 is at least 1.25 times greater than the area of ​​the first section 211. It is worth mentioning that the area of ​​the second arm 12 is the area surrounded by the first short side 12C, the second short side 12D, the third long side 12A, the fourth long side 12B and the dotted line DL1, and the dotted line DL1 is the boundary between the first arm 11 and the second arm 12. The area of ​​the first section 211 is the area surrounded by the first long side 211A, the second long side 211B, the third short side 211C, the fourth short side 211D, the dotted line DL2, and the dotted line DL4. The dotted line DL2 is the boundary between the first section 211 and the second section 212, and the dotted line DL4 is the boundary between the feeding portion 23 and the first section 211. The present invention increases the bandwidth of the overall operating frequency band of the antenna module T by designing that the area of ​​the second arm 12 is at least 1.25 times greater than the area of ​​the first section 211.

[0068] In the first section 211, the first long side 211A is closer to the second arm 12 than the second long side 211B, and the feeding portion 23 is connected to the second long side 211B. A first longitudinal length VL1 is defined between the feeding end 231 and the first long side 211A. In the second arm 12, the fourth long side 12B is further away from the second radiating element 2 than the third long side 12A. The first arm 11 has a short side 111, and a second longitudinal length VL2 is defined between the short side 111 and the fourth long side 12B. The second longitudinal length VL2 is greater than or equal to the first longitudinal length VL1.

[0069] In addition, in the second arm 12, the first short side 12A is connected to the first arm 11, and the first short side 12C and the second short side 12D have a first transverse length HL1. In the first section 211, the fourth short side 211D is connected to the second section 212, and the third short side 211C and the fourth short side 211D have a second transverse length HL2. The first transverse length HL1 is greater than or equal to the second transverse length HL2.

[0070] The second section 212 and the third section 213 are bounded by a dotted line DL3. The third section 213 has a fifth short side 213A, a sixth short side 213B, and a fifth long side 213C. The fifth short side 213A and the sixth short side 213B are arranged opposite to each other. The sixth short side 213B is connected to the second section 212, and the fifth long side 213C is connected between the fifth short side 213A and the sixth short side 213B. A third transverse length HL3 is defined between the fifth short side 213A and the sixth short side 213B. The third transverse length HL3 is smaller than the second transverse length HL2. In addition, a third longitudinal length VL3 is defined between the first long side 211A of the first section 211 and the fifth long side 213C of the third section 213. The third longitudinal length VL3 is smaller than the first longitudinal length VL1.

[0071] Therefore, the present invention can achieve the effect of improving impedance matching of the antenna module T through one of the above-mentioned structural designs regarding the first radiating element 1 and the second radiating element 2 (the second longitudinal length VL2 is greater than or equal to the first longitudinal length VL1, or the first transverse length HL1 is greater than or equal to the second transverse length HL2, or the third transverse length HL3 is less than the second transverse length HL2, or the third longitudinal length VL3 is less than the first longitudinal length VL1).

[0072] Continue reading Figure 1 and Figure 2 , the electronic device D may further include a switching circuit S, electrically connected to the first radiation element 1. Specifically, the switching circuit S is electrically connected to the short side 111 of the first arm 11. The switching circuit S includes a path S1, and the path S1 has a switching switch SW and a passive element E. The switching circuit S is used to switch to different modes according to the switching state of the switching switch SW, and the equivalent impedances generated by the switching circuit S in different modes are different from each other. It should be noted that Figure 2 The switching circuit S in the figure is only one feasible embodiment and is not intended to limit the present invention. The present invention is not limited by the number of paths S1. For example, the switching circuit S includes multiple paths, and different modes can be combinations of different paths. In addition, the passive element E can be an inductor, a capacitor, or a resistor, and the present invention is not limited thereto. The electronic device D can use the configuration of the passive element E to adjust the operating frequency band, impedance matching, and radiation efficiency of the antenna module T.

[0073] In addition, the electronic device D may further include a control circuit R, which is electrically connected to the switching circuit S and controls the switching circuit S to switch to one of a plurality of modes to adjust the operating frequency band of the antenna module T. For example, in the present invention, the second radiating element 2 is a monopole antenna, and the type of the first radiating element 1 depends on the state of the switching switch SW in the switching circuit S.

[0074] exist Figure 2 In the embodiment, when the switching circuit S is switched to a first mode, the switching switch SW is in the on state, and the signal is grounded through the path S1. Therefore, the signal is fed into the feeding portion 23 of the second radiating element 2 by the feeding element F, and is coupled to the first radiating element 1 through the second radiating element 2 to generate an operating frequency band with a frequency range of 617MHz to 960MHz. It should be noted that in the present invention, the hook-shaped structure (the first branch 2111, the second section 212 and the third section 213) is configured toward the negative X-axis direction. The present invention adjusts the current direction by designing the hook-shaped structure farther away from the first arm 11 than the second branch 2112, so that the current passes through the feeding portion 23, the hook-shaped structure, the second arm 12 and the first arm 11 in sequence and goes down to the ground, so that the electromagnetic waves generated by the antenna module T can form constructive interference (or can reduce the formation of destructive interference), thereby increasing the radiation energy and improving the radiation efficiency.

[0075] When the switching circuit S is switched to a second mode, the switch SW is in a non-conducting state, and the first radiating element 1 is not grounded, i.e., a floating arm. Therefore, the signal is fed from the feeding element F into the feeding portion 23 of the second radiating element 2, and coupled to the first radiating element 1 through the second radiating element 2, so as to improve the impedance matching and enhance the radiation efficiency of the antenna.

[0076] In addition, the feeding element F is used to feed a signal to excite the second radiating element 2 to generate a plurality of different operating frequency bands. For example, the signal passes through the feeding portion 23, the first branch 2111, the second section 212 and the third section 213 to generate an operating frequency band with a frequency range of 800 MHz to 960 MHz and 2400 MHz to 2690 MHz. The signal passes through the feeding portion 23 and the second branch 2112 to generate an operating frequency band with a frequency range of 1420 MHz to 2690 MHz. The signal passes through a portion of the feeding portion 23 and the second radiating portion 22 to generate an operating frequency band with a frequency range of 3000 MHz to 6000 MHz.

[0077] [Second embodiment]

[0078] See also Figure 3 As shown, Figure 3FIG. 1 is a schematic diagram of an antenna module according to a second embodiment of the present invention. The second embodiment has a similar structure to the first embodiment, and the similarities are not repeated here. The main difference between the second embodiment and the first embodiment is that the antenna module T of the second embodiment further includes a proximity sensing circuit P electrically connected to the first radiating element 1. For example, the proximity sensing circuit P can be a capacitance sensing circuit, and the proximity sensing circuit P is electrically connected to a main circuit board (Mainboard), which is not shown in the figure.

[0079] The present invention regards the first radiating element 1 as a sensing electrode (Sensor pad) through the setting of a proximity sensing circuit P, so that the proximity sensing circuit P can measure the distance between an object (such as the user's leg or other parts) and the antenna module T. The sensing signal sensed by the proximity sensing circuit P through the sensing electrode will be transmitted back to the main circuit board. Thereby, the electronic device D can have the function of sensing whether the human body is close to the antenna module T, and then adjust the signal energy transmitted to the antenna by the wireless radio frequency module (not shown) on the main circuit board, so as to avoid the problem of excessively high specific absorption rate (SAR) of electromagnetic wave energy per unit mass of the biological body. In addition, for example, the proximity sensing circuit P can be integrated into the switching circuit S, such as Figure 3 As shown; alternatively, the proximity sensing circuit P may also be independently configured outside the switching circuit S, for example, configured at a position adjacent to the antenna module T; alternatively, the proximity sensing circuit P may also be independently configured on the main circuit board.

[0080] In addition, the antenna module T may further include an inductor element L, which is connected in series between the proximity sensing circuit P and the first arm 11 of the first radiating element 1. The inductor element L may be used as an RF choke to prevent RF signals from flowing into the proximity sensing circuit P.

[0081] [Beneficial Effects of Embodiments]

[0082] The electronic device D and antenna module T provided by the present invention can optimize the antenna characteristics and meet more stringent antenna specification requirements through the technical solution of "the first branch 2111, the second section 212 and the third section 213 jointly form a hook-shaped structure, the first radiating element 1 is arranged on the periphery of the second radiating element 2, and the hook-shaped structure is farther away from the first arm 11 than the second branch 2112".

[0083] Furthermore, the present invention adjusts the direction of the current by designing the hook-shaped structure to be further away from the first branch arm 11 than the second branch 2112, so that the current passes through the feeding portion 23, the hook-shaped structure, the second branch arm 12 and the first branch arm 11 in sequence and then goes down to the ground, so that the electromagnetic waves generated by the antenna module T can form constructive interference, thereby increasing the radiation energy (or reducing the formation of destructive interference and avoiding the attenuation of the radiation energy).

[0084] In addition, the present invention can enhance the radiation energy of the antenna module T in the low frequency range by designing a minimum spacing GP less than or equal to 10 mm; increase the bandwidth of the overall operating frequency band of the antenna module T by designing that the area of ​​the second arm 12 is at least 1.25 times greater than the area of ​​the first section 211; and achieve the effect of improving impedance matching of the antenna module T by the structural design of the above-mentioned first radiating element 1 and the second radiating element 2 (the second longitudinal length VL2 is greater than or equal to the first longitudinal length VL1, the first transverse length HL1 is greater than or equal to the second transverse length HL2, the third transverse length HL3 is less than the second transverse length HL2, and the third longitudinal length VL3 is less than the first longitudinal length VL1).

[0085] The contents disclosed above are only preferred feasible embodiments of the present invention, and are not intended to limit the scope of the claims of the present invention. Therefore, all equivalent technical changes made using the contents of the present invention description and drawings are included in the scope of the claims of the present invention.

Claims

1. An electronic device, comprising: a housing; An antenna module is disposed in the housing and includes: a first radiation element, the first radiation element comprising a first arm and a second arm connected to the first arm; and a second radiating element, the second radiating element comprising a first radiating portion and a feeding portion, the first radiating portion comprising a first section, a second section and a third section, the feeding portion being connected to the first section, the first section comprising a first branch and a second branch, the second section being connected between the first branch and the third section, the first branch, the second section and the third section forming a hook-shaped structure together, wherein the first radiating element is disposed at the periphery of the second radiating element, and the hook-shaped structure is further away from the first arm than the second branch; and A feeding component is electrically connected to the feeding portion.

2. The electronic device according to claim 1, wherein: The second radiation element further includes a second radiation portion connected to the feeding portion. The second radiation portion is closer to the feeding element than the first radiation portion.

3. The electronic device according to claim 1, wherein: There is a minimum distance between the first section and the second arm, and the minimum distance is less than or equal to 10 mm.

4. The electronic device according to claim 1, wherein: The area of ​​the second arm is at least 1.25 times greater than the area of ​​the first section.

5. The electronic device as claimed in claim 1, wherein: The first section has a first long side and a second long side relative to each other, the first long side is closer to the second arm than the second long side, the feeding portion is connected to the second long side, the feeding portion has a feeding end electrically connected to the feeding element, and there is a first longitudinal length between the feeding end and the first long side; wherein, the first arm has a short side, the second arm has a third long side and a fourth long side relative to each other, the fourth long side is farther away from the second radiating element than the third long side, and there is a second longitudinal length between the short side and the fourth long side; wherein, the second longitudinal length is greater than or equal to the first longitudinal length.

6. The electronic device as claimed in claim 5, wherein: The second arm also has a first short side and a second short side opposite to each other, the first short side is connected to the first arm, and a first horizontal length is between the first short side and the second short side; wherein the first section also has a third short side and a fourth short side opposite to each other, the fourth short side is connected to the second section, and a second horizontal length is between the third short side and the fourth short side; wherein the first horizontal length is greater than or equal to the second horizontal length.

7. The electronic device as claimed in claim 6, wherein: The third section has a fifth short side and a sixth short side opposite to each other. The sixth short side is connected to the second section. A third horizontal length is provided between the fifth short side and the sixth short side, and the third horizontal length is smaller than the second horizontal length.

8. The electronic device as claimed in claim 7, wherein: The third section also has a fifth long side connected between the fifth short side and the sixth short side. A third longitudinal length is provided between the first long side of the first section and the fifth long side of the third section, and the third longitudinal length is smaller than the first longitudinal length.

9. The electronic device as claimed in claim 1, further comprising a switching circuit and a proximity sensing circuit, wherein the switching circuit and the proximity sensing circuit are electrically connected to the first radiating element, and the switching circuit comprises a path having a switching switch and a passive element; wherein, The switching circuit is used to switch to different modes according to the switching state of the switching switch, and the equivalent impedances generated by the switching circuit in different modes are different from each other.

10. An antenna module, comprising: A first radiation element, the first radiation element comprising a first arm and a second arm connected to the first arm; as well as A second radiating element, the second radiating element includes a first radiating portion and a feeding portion, the first radiating portion includes a first section, a second section and a third section, the feeding portion is connected to the first section and electrically connected to a feeding element, the first section includes a first branch and a second branch, the second section is connected between the first branch and the third section, the first branch, the second section and the third section together form a hook-shaped structure, wherein the first radiating element is arranged on the periphery of the second radiating element, and the hook-shaped structure is farther away from the first arm than the second branch.

11. The antenna module according to claim 10, wherein: The second radiation element further includes a second radiation portion connected to the feeding portion. The second radiation portion is closer to the feeding element than the first radiation portion.

12. The antenna module according to claim 10, wherein: There is a maximum distance between the first section and the second arm, and the maximum distance is less than or equal to 10 mm.

13. The antenna module according to claim 10, wherein: The area of ​​the second arm is at least 1.25 times greater than the area of ​​the first section.

14. The antenna module according to claim 10, wherein: The first section has a first long side and a second long side relative to each other, the first long side is closer to the second arm than the second long side, the feeding portion is connected to the second long side, the feeding portion has a feeding end electrically connected to the feeding element, and there is a first longitudinal length between the feeding end and the first long side; wherein, the first arm has a short side, the second arm has a third long side and a fourth long side relative to each other, the fourth long side is farther away from the second radiating element than the third long side, and there is a second longitudinal length between the short side and the fourth long side; wherein, the second longitudinal length is greater than or equal to the first longitudinal length.

15. The antenna module according to claim 14, wherein: The second arm also has a first short side and a second short side opposite to each other, the first short side is connected to the first arm, and a first horizontal length is between the first short side and the second short side; wherein the first section also has a third short side and a fourth short side opposite to each other, the fourth short side is connected to the second section, and a second horizontal length is between the third short side and the fourth short side; wherein the first horizontal length is greater than or equal to the second horizontal length.

16. The antenna module according to claim 15, wherein: The third section has a fifth short side and a sixth short side opposite to each other. The sixth short side is connected to the second section. A third horizontal length is provided between the fifth short side and the sixth short side, and the third horizontal length is smaller than the second horizontal length.

17. The antenna module according to claim 16, wherein: The third section also has a fifth long side connected between the fifth short side and the sixth short side. A third longitudinal length is provided between the first long side of the first section and the fifth long side of the third section, and the third longitudinal length is smaller than the first longitudinal length.

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