Antenna module and electronic equipment

Abstract

The invention discloses an antenna module and electronic equipment, and belongs to the technical field of communication. The antenna module comprises a grounding plate, a feed source and a first radiator, the first radiator corresponds to a first vertex angle of the grounding plate, the first radiator and the grounding plate are spaced, and the first vertex angle is located in a connecting area of the first side edge and the second side edge of the grounding plate; the feed source is electrically connected with the first radiator, a first end of a first segment of the first radiator is electrically connected with the grounding plate, a second end of the first segment is folded and extended to form a second segment, and a tail end of the second segment is bent and extended to form a third segment; the extension directions of the first section and the second section are the same as the extension direction of the first side edge, a first gap is formed between the long side edge of the first section and the second section, and the extension direction of the third section is the same as the extension direction of the second side edge; the working frequency band of the antenna module comprises a first frequency band and a second frequency band, the frequency of the first frequency band is lower than that of the second frequency band, and the second wavelength is the wavelength corresponding to the second frequency band.

Description

Technical Field

[0001] The present application belongs to the field of communication technology, and specifically relates to an antenna module and an electronic device. Background Art

[0002] With the development of communication technology, mobile phones and other electronic devices need to be equipped with multiple antennas at the same time to meet the transmission requirements of different frequency bands or Multiple-Input Multiple-Output (MIMO). However, as mobile phones and other electronic devices develop towards thinner and higher screen-to-body ratios, the space for antenna layout on electronic devices is getting smaller and smaller. How to arrange multi-frequency antennas within the limited antenna layout space on electronic devices and ensure that the radiation efficiency of each antenna meets the requirements has become an urgent problem to be solved. Summary of the Invention

[0003] The purpose of the embodiments of the present application is to provide an antenna module and an electronic device that can solve the problem of arranging a multi-frequency antenna within a limited antenna layout space on an electronic device and ensure that the radiation efficiency of the antenna meets the requirements.

[0004] In a first aspect, an embodiment of the present application provides an antenna module, the antenna module comprising: a ground plate, a feed source, and a first radiator;

[0005] The first radiator corresponds to a first vertex corner of the ground plate, and the first radiator is spaced apart from the ground plate, and the first vertex corner is located at a connection area between a first side edge of the ground plate and a second side edge of the ground plate;

[0006] The feed source is electrically connected to the first radiator, the first radiator includes a first segment, a second segment, and a third segment connected in sequence, a first end of the first segment is electrically connected to the ground plate, and a second end of the first segment is folded and extended to form the second segment. The length of the first radiator is L, and the length of the first segment is 1 / 3 L.

[0007] The first segment and the second segment extend in the same direction as the first side, and a first gap exists between the long side of the first segment and the long side of the second segment. The third segment extends in the same direction as the second side.

[0008] The operating frequency band of the antenna module includes a first frequency band and a second frequency band, the frequency of the first frequency band is lower than the frequency of the second frequency band, wherein L is 3 / 4 times the second wavelength, and the second wavelength is the wavelength corresponding to the second frequency band.

[0009] In a second aspect, an embodiment of the present application provides an electronic device, which includes the antenna module as described in the first aspect.

[0010] In the embodiment of the present application, the first radiator can be used to radiate signals in a first frequency band and a second frequency band, wherein the first frequency band is lower than the frequency of the second frequency band. When operating in the first frequency band, a longer first radiator can be used to construct a 1 / 4 IFA mode or a 1 / 4 monopole mode for the first frequency band. When operating in the second frequency band, the first radiator can be used to construct a 3 / 4 IFA mode for the second frequency band. Based on the 3 / 4 IFA mode, two current modes with opposite directions exist. By folding and extending the first radiator at a position 1 / 3L away from the ground point, the first segment and the second segment extend in opposite directions with the anti-phase point as the boundary, the current directions in the first segment and the second segment can be aligned, thereby improving the radiation efficiency of the antenna module in the second frequency band. In addition, based on the length of the first segment being 1 / 3L, by dividing the remaining portion of the first radiator into a second segment and a third segment, and bending the third segment to extend along the second side of the ground plane, the second segment can be prevented from being too long and extending beyond the second side of the ground plane. Alternatively, the length of the first radiator on the first side of the ground plane can be reduced, so that only the antenna layout space on the first side of the ground plane originally used for the second segment needs to be occupied to achieve antenna layouts for the first and second frequency bands. Therefore, the antenna module of the embodiment of the present application can achieve multi-frequency and miniaturization, and can also improve the radiation efficiency of the second frequency band without increasing the radiation power of the second frequency band. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1a It is a structural diagram of a low-frequency IFA antenna in the related art;

[0012] Figure 1b yes Figure 1a Schematic diagram of the 1 / 4 IFA mode of the low-frequency IFA antenna shown;

[0013] Figure 1c yes Figure 1a Schematic diagram of the 1 / 4 monopole mode of the low-frequency IFA antenna shown;

[0014] Figure 1d yes Figure 1a Schematic diagram of the high-order 3 / 4IFA mode of the low-frequency IFA antenna shown;

[0015] Figure 1e Schematic diagram of a 1 / 4 IFA mode of a medium- and high-frequency IFA antenna in the related art;

[0016] Figure 1f Schematic diagram of a 1 / 4 monopole mode of a medium-high frequency IFA antenna in the related art;

[0017] Figure 1g yes Figure 1d and Figure 1eRadiation efficiency curve of the IFA antenna shown;

[0018] Figure 1h yes Figure 1d SAR hotspot distribution map of the IFA antenna shown;

[0019] Figure 1i yes Figure 1e SAR hotspot distribution map of the IFA antenna shown;

[0020] Figure 2 This is one of the structural diagrams of the antenna module in some embodiments of the present application;

[0021] Figure 3a This is a second structural diagram of the antenna module in some embodiments of the present application;

[0022] Figure 3b yes Figure 3a The mode current distribution diagram of the first radiator at medium and high frequencies is shown;

[0023] Figure 4a This is the third structural diagram of the antenna module in some embodiments of the present application;

[0024] Figure 4b yes Figure 4a The mode current distribution diagram of the first radiator at medium and high frequencies is shown;

[0025] Figure 5 yes Figure 1a and Figure 3a Radiation efficiency curve of the antenna module shown;

[0026] Figure 6 yes Figure 3a Antenna efficiency curve of the antenna module shown;

[0027] Figure 7a yes Figure 3a SAR heat map of the antenna module shown at 1.8 GHz;

[0028] Figure 7b yes Figure 1e SAR heat map of the IFA antenna at 1.8 GHz;

[0029] Figure 8a This is a fourth structural diagram of the antenna module in some embodiments of the present application;

[0030] Figure 8b yes Figure 8a The mode current distribution diagram of the first radiator at the intermediate frequency is shown;

[0031] Figure 8c yes Figure 8a SAR heat map of the antenna module shown;

[0032] Figure 8d yes Figure 8a Antenna efficiency curve of the antenna module shown;

[0033] Figure 9a This is one of the schematic diagrams of the first gap;

[0034] Figure 9b This is the second schematic diagram of the first gap;

[0035] Figure 9c This is the third schematic diagram of the first gap;

[0036] Figure 9d This is the fourth schematic diagram of the first gap;

[0037] Figure 10a This is the fifth structural diagram of the antenna module in some embodiments of the present application;

[0038] Figure 10b is a schematic diagram of the relative position of the antenna module and the right human tissue fluid cross section;

[0039] Figure 10c yes Figure 10a Antenna efficiency curve of the antenna module shown;

[0040] Figure 10d yes Figure 10a The pattern current distribution diagram of the antenna module shown at 2.6 GHz;

[0041] Figure 10e yes Figure 10a SAR heat map of the antenna module shown at 2.6 GHz;

[0042] Figure 11a This is the sixth structural diagram of the antenna module in some embodiments of the present application;

[0043] Figure 11b FIG7 is a seventh structural diagram of an antenna module in some embodiments of the present application;

[0044] Figure 11c yes Figure 11a The pattern current distribution diagram of the antenna module shown at 2.6 GHz;

[0045] Figure 11d yes Figure 11a SAR heat map of the antenna module at 2.6 GHz;

[0046] Figure 11e yes Figure 11a Antenna efficiency curve of the antenna module shown;

[0047] Figure 12aThis is an eighth structural diagram of an antenna module in some embodiments of the present application;

[0048] Figure 12b This is a ninth structural diagram of an antenna module in some embodiments of the present application;

[0049] Figure 12c yes Figure 12a The pattern current distribution diagram of the antenna module shown at 2.6 GHz;

[0050] Figure 12d yes Figure 12a and Figure 11a The antenna efficiency curve of the antenna module shown at low frequency;

[0051] Figure 12e yes Figure 12a and Figure 11a The antenna efficiency curve of the antenna module shown is at medium and high frequencies;

[0052] Figure 12f yes Figure 12a Antenna efficiency curve of the antenna module shown;

[0053] Figure 13a It is one of the schematic diagrams of the third gap or the fourth gap;

[0054] Figure 13b This is the second schematic diagram of the third gap or the fourth gap;

[0055] Figure 13c This is the third schematic diagram of the third gap or the fourth gap.

[0056] Figure 14 FIG10 is a structural diagram of an antenna module in some embodiments of the present application;

[0057] Figure 15 FIG11 is a structural diagram of an antenna module in some embodiments of the present application;

[0058] Figure 16a FIG12 is a structural diagram of an antenna module in some embodiments of the present application;

[0059] Figure 16b FIG13 is a structural diagram of an antenna module in some embodiments of the present application;

[0060] Figure 16c FIG4 is a structural diagram of an antenna module in some embodiments of the present application;

[0061] Figure 16d FIG15 is a structural diagram of an antenna module in some embodiments of the present application;

[0062] Figure 17FIG16 is a structural diagram of an antenna module in some embodiments of the present application;

[0063] Figure 18 FIG17 is a structural diagram of an antenna module in some embodiments of the present application;

[0064] Figure 19 FIG18 is a structural diagram of an antenna module in some embodiments of the present application;

[0065] Figure 20 FIG19 is a structural diagram of an antenna module in some embodiments of the present application;

[0066] Figure 21 is a schematic diagram of the disassembled structure of an electronic device in some embodiments of the present application;

[0067] Figure 22 is a schematic structural diagram of a metal frame in some embodiments of the present application;

[0068] Figure 23 Schematic diagram of the structure of the plastic frame in some embodiments of the present application. DETAILED DESCRIPTION

[0069] The following will be combined with the accompanying drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the embodiments described are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of this application.

[0070] The terms "first," "second," and the like in the specification and claims of this application are used to distinguish similar objects, and are not used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of this application can be implemented in an order other than that illustrated or described herein, and that the objects distinguished by "first," "second," and the like are generally of the same type, and do not limit the number of objects; for example, the first object can be one or more. In addition, the term "and / or" in the specification and claims refers to at least one of the connected objects, and the character " / " generally indicates that the objects connected are in an "or" relationship.

[0071] To facilitate understanding of the structure, working principle, and beneficial effects of the antenna module in the embodiments of the present application, the related technologies of the present application are first described:

[0072] like Figure 1aAs shown in the related art, the radiator 101 of the low-frequency inverted F antenna (IFA) has a length of l, and the antenna feeding point 102 and the grounding point 103 are both located on the top surface of the base plate 104, wherein the feeding point 102 is located near the grounding point 103, and the distance between the feeding point 102 and the grounding point 103 is less than 0.1λ Low ,λ Low Corresponding to the working wavelength of the low frequency band, the radiation efficiency of the antenna in the low frequency band is mainly determined by Figure 1b and Figure 1c Two modes cover, such as Figure 1b Working at a frequency of f Low1 The resonant mode is a quarter IFA mode, such as Figure 1c Working at frequency f Low2 The resonant mode is a quarter-pole mode, where f Low1 <f Low2 .

[0073] In the embodiment of the present application, it is considered to use the resonant mode of the low-frequency IFA antenna at medium and high frequencies, that is, the high-order mode 3 / 4 IFA mode, to achieve multi-frequency of the low-frequency antenna.

[0074] Use as Figure 1d The high-order 3 / 4IFA mode of the low-frequency IFA antenna in the related art shown is used as a medium- and high-frequency antenna, and the radiation efficiency of the medium- and high-frequency antenna is relatively low.

[0075] For example: Figure 1d As shown in the figure, the high-order mode 3 / 4IFA mode of the low-frequency IFA antenna in the related art is directly used as the medium and high frequency antenna solution. Compared with the traditional IFA antenna working at medium and high frequencies, Figure 1e The IFA antenna shown operates in 1 / 4IFA mode at an intermediate frequency, or Figure 1f The IFA antenna shown operates in 1 / 4 monopole mode at high frequency.

[0076] For example: through Figure 1g contrast Figure 1d The radiation efficiency curve of the high-order mode 3 / 4IFA mode of the low-frequency IFA antenna is Figure 1e The radiation efficiency curve of the 1 / 4 IFA mode of the medium and high frequency antenna shown in the figure shows that the radiation efficiency of the 3 / 4 IFA mode in the medium and high frequencies is lower than that of the 1 / 4 IFA mode.

[0077] In addition, using Figure 1d The high-order 3 / 4 IFA mode of the low-frequency IFA antenna in the related art is used as a medium- and high-frequency antenna, and the peak value of the electromagnetic wave specific absorption ratio (SAR) of the medium- and high-frequency antenna will increase.

[0078] For example: by comparing Figure 1h The SAR hotspot distribution of the high-order 3 / 4IFA mode of the low-frequency IFA antenna is shown in Figure 2. Figure 1i The SAR hotspot distribution of the 1 / 4 IFA mode of the medium and high frequency antenna is shown. It can be seen that the SAR hotspot distribution of the 3 / 4 IFA mode working at the medium frequency is relatively concentrated compared with the 1 / 4 IFA mode, that is, the 3 / 4 IFA mode working at the medium frequency exhibits a high SAR peak feature.

[0079] In related technologies, the human body's absorption of electromagnetic waves is primarily measured using the SAR (Specular Absorption Ratio) (SAR). The lower the SAR value, the less impact electromagnetic radiation has on the human body. Due to the adverse effects of electromagnetic radiation on the human body, people have begun to pay attention to its impact, and SAR standards have established strict requirements for the SAR performance of electronic devices. If antennas in electronic devices are not specifically designed for SAR performance, they will be forced to reduce RF conducted power, significantly degrading over-the-air (OTA) performance. Therefore, antenna design presents numerous challenges.

[0080] In summary, traditional low-frequency IFA antenna solutions struggle to achieve both good radiation performance and SAR performance in the mid- and high-frequency bands. Traditional mid- and high-frequency IFA antennas are limited by size and struggle to maintain low-frequency performance. The present application provides multiple solutions to explore miniaturized, high-performance, low-SAR antenna modules that can cover both low and mid-frequency bands.

[0081] The antenna module and electronic device provided in the embodiments of the present application are described in detail below through specific embodiments and their application scenarios in conjunction with the accompanying drawings.

[0082] See Figure 2 , the antenna module provided by the embodiment of the present application includes: a ground plate 1, a feed source 2 and a first radiator 3;

[0083] The first radiator 3 corresponds to the first vertex S of the ground plate 1 , and the first radiator 3 is spaced apart from the ground plate 1 , and the first vertex S is located at the connection area between the first side S1 of the ground plate 1 and the second side S2 of the ground plate 1 ;

[0084] The feed source 2 is electrically connected to the first radiator 3. The first radiator 3 includes a first segment AB, a second segment BC, and a third segment CD, which are connected in sequence. The first end of the first segment AB is electrically connected to the ground plate 1. The second end of the first segment AB is folded and extended to form the second segment BC. The length of the first radiator 3 is L, and the length of the first segment AB is 1 / 3 L.

[0085] The first segment AB and the second segment BC extend in the same direction as the first side S1, and a first gap 10 is formed between the long side of the first segment AB and the long side of the second segment BC. The third segment CD extends in the same direction as the second side S2.

[0086] The working frequency band of the antenna module includes a first frequency band and a second frequency band, the frequency of the first frequency band is lower than the frequency of the second frequency band, wherein L is 3 / 4 times the second wavelength, and the second wavelength is the wavelength corresponding to the second frequency band.

[0087] In some embodiments, the first frequency band may be a low frequency band, such as at least one of the B5, B8, and B28 frequency bands.

[0088] In some embodiments, the second frequency band may be a mid-high frequency band, such as at least one of the B3, B40, and B7 frequency bands.

[0089] Of course, the first frequency band and the second frequency band can also be other frequency bands. For the sake of convenience, in the embodiment of the present application, an example is given in which the first frequency band is a low frequency band and the second frequency band is a medium or high frequency band.

[0090] In some embodiments, the antenna module in the embodiment of the present application may be an IFA antenna module, such as Figure 2 As shown, the first end of the first segment AB is grounded, and the right position on the first segment AB is electrically connected to the feed source 2.

[0091] In some embodiments, the ground plate 1 has a rectangular plate-like structure. In this case, the second segment BC and the third segment CD extend in directions substantially perpendicular to each other. Of course, the top angle of the ground plate 1 can be a right angle or a rounded angle. In this case, the second segment BC and the third segment CD have a smooth transition. Specifically, the third segment CD can include the portion of the first radiator 3 located in the rounded area of the first top corner S and the portion of the first radiator 3 located corresponding to the second side S2.

[0092] In some embodiments, the frequency band in the embodiments of the present application is a frequency range. In this case, the wavelength corresponding to the frequency band can be the wavelength corresponding to any frequency in the frequency band. For the sake of convenience, in the embodiments of the present application, the wavelength corresponding to the center frequency of the frequency band is usually used as an example for illustration.

[0093] In some embodiments, as Figure 3a As shown, the first segment AB is parallel to and spaced apart from the first surface T1 of the ground plate 1 , and the second segment BC and the third segment CD are parallel to and spaced apart from the second surface T2 of the ground plate 1 .

[0094] For example, when the feeding port of the feed source 2 and the grounding port on the ground plate 1 are arranged in the area of the first surface T1 close to the first side S1, the following can be used: Figure 3a In the scheme shown, at this time, the first segment AB is located on the side of the second segment BC facing the center of the ground plate 1, and the mode current distribution diagram of the first radiator 3 at medium and high frequencies is as follows: Figure 3b shown.

[0095] In other embodiments, Figure 4a As shown, the second segment BC and the third segment CD are parallel to and spaced apart from the first surface T1 of the ground plate 1 , and the first segment AB is parallel to and spaced apart from the second surface T2 of the ground plate 1 .

[0096] For example, when the feeding port of the feed source 2 and the grounding port on the ground plate 1 are arranged on the second surface T2 or on the back side of the ground plate 1 facing away from the first surface T1, the following can be used: Figure 4a In the scheme shown, at this time, the first segment AB is located on the side of the second segment BC away from the center of the ground plate 1, and the mode current distribution diagram of the first radiator 3 at medium and high frequencies is as follows: Figure 4b shown.

[0097] The first surface T1 is the plane where the first side S1 and the second side S2 are located. Figure 3a and Figure 4a The second surface T2 is the upper surface of the ground plate 1 shown in FIG. 1 , and the second surface T2 is the outer peripheral surface of the ground plate 1 , and the second surface T2 is parallel to the thickness direction of the ground plate 1 .

[0098] In this embodiment, the relative positions of the first segment AB, the second segment BC and the third segment CD can be flexibly set according to the positions of the feeding port and the grounding port on the ground plate 1, so that the layout of the antenna module is more flexible.

[0099] For the sake of convenience, the following examples of this application are generally described as follows: Figure 3a The example in which the second segment BC and the third segment CD are parallel to and spaced apart from the second surface T2, and the first segment AB is parallel to and spaced apart from the first surface T1 is used for illustration. However, the scheme in which the second segment BC and the third segment CD are parallel to and spaced apart from the first surface T1, and the first segment AB is parallel to and spaced apart from the second surface T2 can be applied to all embodiments of the present application.

[0100] like Figure 3b and Figure 4b It can be seen that the first segment AB and the second segment BC are bent 180° at the phase reversal point of the 3 / 4 IFA mode in the second frequency band.

[0101] It is worth mentioning that based on the 3 / 4IFA mode, there are two current modes in opposite directions. By folding and extending the first radiator 3 at a position 1 / 3L away from the grounding point, the first segment AB and the second segment BC are extended in opposite directions with the inversion point as the boundary. The current directions on the first segment AB and the second segment BC can be made consistent, which can improve the radiation efficiency of the antenna module in the second frequency band.

[0102] For example: Figure 5 As shown, Figure 3a The antenna module shown is compared with Figure 1a For the antenna module shown in the figure, it has the same characteristics as the Figure 1a The radiation efficiency of traditional low-frequency IFA antennas is comparable, and the radiation efficiency of traditional low-frequency antennas in the medium and high frequency bands is improved. Figure 6 As shown, Figure 3a The antenna operating frequency band of the antenna module shown can cover B28 and B3, indicating that the folded IFA antenna solution can effectively cover low frequencies and medium and high frequencies.

[0103] In summary, in the embodiment of the present application, the first radiator 3 can be used for signal radiation in the first frequency band and the second frequency band, wherein the first frequency band is lower than the frequency of the second frequency band. When working in the first frequency band, the longer first radiator 3 can be used to construct the 1 / 4 IFA mode or 1 / 4 monopole mode of the first frequency band; when working in the second frequency band, the first radiator 3 can be used to construct the 3 / 4 IFA mode of the second frequency band, and based on the 3 / 4 IFA mode, there are two current modes in opposite directions. By folding and extending the first radiator 3 at a position 1 / 3L away from the ground point, the first segment AB and the second segment BC are extended in opposite directions with the anti-phase point as the boundary, so that the current directions on the first segment AB and the second segment BC can be consistent, which can improve the antenna module in the first frequency band. In addition, based on the fact that the length of the first segment AB is 1 / 3L, by dividing the remaining portion of the first radiator 3 into a second segment BC and a third segment CD, and bending the third segment CD to extend along the second side S2 of the ground plane 1, the second segment BC can be prevented from being too long and extending beyond the second side S2 of the ground plane 1. Alternatively, the length occupied by the first radiator 3 on the first side S1 of the ground plane 1 can be reduced, so that only the antenna layout space originally used for the second segment on the first side S1 of the ground plane 1 is occupied, thereby realizing the antenna layout of the first and second frequency bands. Therefore, the antenna module of the embodiment of the present application can achieve multi-frequency and miniaturization, and can also improve the radiation efficiency of the second frequency band without increasing the radiation power of the second frequency band.

[0104] It is worth mentioning that, by comparison Figure 7a and Figure 7b It can be seen that Figure 3a The SAR distribution of the antenna module at 1.8 GHz is compared with Figure 1e The SAR distribution of the IFA antenna at 1.8 GHz is more concentrated, i.e. Figure 3a The SAR hotspot distribution of the antenna module in the medium-frequency resonance mode is concentrated in the antenna body area, showing high SAR characteristics.

[0105] As shown in Table 1 below Figure 3a The antenna module shown and Figure 1e The IFA antenna shown has the body SAR peak and -5dB normalized SAR at 5mm on the back, top and right side of the ground plane:

[0106] Table 1

[0107] From the above Table 1 we can see that Figure 3a The SAR of the antenna module shown in the figure is significantly higher than that of the Figure 1e The SAR performance of the 1 / 4 IFA antenna at mid-frequency frequencies is primarily reflected in the backside and topside SAR. Furthermore, the backside and topside SAR are significantly higher than those on the right side, indicating that electromagnetic energy is primarily distributed on the back and top, while the SAR on the left side, where the second side S2 is located, is lower. The following examples propose optimization solutions for the high SAR performance of the antenna module provided in the present application at mid- and high-frequency frequencies.

[0108] It should be noted that the SAR peak value is closely related to the conducted power of the RF front end and the radiation efficiency of the antenna itself, that is, the actual radiated electromagnetic energy. In order to effectively compare SAR performance, the normalized SAR in the embodiment of this application is to normalize the conducted power of the RF front end and the radiation efficiency of the antenna itself to the same level, and then compare the SAR peak values on this basis. The standard for normalized SAR in the embodiment of this application is generally defined as 24dBm RF conduction and -5dB antenna efficiency.

[0109] As an optional implementation, Figure 8a As shown, the first radiator 3 further includes: a fourth segment AE;

[0110] The first end of the fourth segment AE is electrically connected to the first end of the first segment AB; and the second end of the fourth segment AE is bent parallel to the third segment CD, with a second gap 20 between the long sides of the fourth segment AE and the long sides of the third segment CD.

[0111] It should be noted that if Figure 8bAs shown, by adding a fourth segment AE to the first end of the first segment AB, the fourth segment AE can be used as a parasitic branch, so that when the antenna module operates in the intermediate frequency band, the 3 / 4 IFA mode on the first segment AB, the second segment BC and the third segment CD and the 1 / 4 IFA mode of the fourth segment AE form a common mode. This resonant mode reduces the peak intensity of the magnetic field of the antenna on the back side of the first surface T1 facing away from the ground plate 1, and increases the magnetic field intensity on the side where the second side S2 is located. The beneficial effect is that the near-field energy of the antenna is more evenly distributed in space, and the SAR hotspots are distributed on the top and side of the ground plate 1 to form two strong areas, so that the SAR peak is lower.

[0112] In some embodiments, in order for the fourth segment AE to construct a 1 / 4 IFA mode of the intermediate frequency, the length of the fourth segment AE may be approximately equal to 1 / 3L.

[0113] Of course, the equivalent electrical length of the fourth segment AE may be adjusted to 1 / 3L in other ways.

[0114] For example: adding a tuning module electrically connected to the fourth segment AE, or Figure 8a As shown, the relative positions of the feed point and the ground point on the first radiator 3 are swapped, so that the feed source 2 is electrically connected to the fourth segment AE. In this case, the feed source 2 can be used to load the capacitor to increase the equivalent electrical length of the fourth segment AE, thereby shortening the physical length of the fourth segment AE and reducing the space occupied by the fourth segment AE.

[0115] Of course, the feed source 2 can also be electrically connected to the first segment AB. In this case, the feed source 2 can also be used to load capacitance to increase the equivalent electrical length of the first segment AB, thereby shortening the physical length of the first segment AB and reducing the space occupied by the first segment AB.

[0116] For ease of explanation, in the subsequent embodiments of the present application, the electrical connection between the feed source 2 and the fourth segment AE is usually taken as an example for illustration, but the implementation method of the electrical connection between the feed source 2 and the first segment AB can also be applied to the subsequent embodiments of the present application.

[0117] In some embodiments, in order to make the antenna module have a better impedance characteristic, the distance between the feeding point and the first end of the fourth segment AE should be less than λ Mid / 8, where λ Mid The operating wavelength corresponding to the intermediate frequency band.

[0118] In some embodiments, as Figure 8a As shown, in order for the antenna module to fully excite the resonance mode of the portion of the first radiator 3 facing the second side S2 of the ground plate 1 at medium and high frequencies, the distance d between the ground point on the first radiator 3 and the second side S2 should be less than λMid / 8.

[0119] By comparison Figure 8c and Figure 7a It can be seen that Figure 8a The SAR distribution of the antenna module with the fourth segment AE added is shown in FIG. Figure 3a The SAR distribution of the antenna module without the fourth segment AE is closer to the second side S2, thereby reducing the additional Figure 8a SAR peaks at the top and back of the antenna module are shown.

[0120] The details are shown in Table 2 below. Figure 3a The antenna module shown, Figure 1e The IFA antenna shown and Figure 8a The antenna module shown has the body SAR peak and -5dB normalized SAR at 5mm on the back, top and right side of the ground plane:

[0121] Table 2

[0122]

[0123]

[0124] From Table 2 above, we can see that Figure 8a The normalized SAR peak value of the antenna module shown in the figure is relatively high at the intermediate frequency. Figure 3a The normalized SAR peak value of the antenna module shown in the figure is significantly reduced at the intermediate frequency, with a reduction of more than 3dB and lower than Figure 1e The conventional IFA antenna shown above mainly reflects the backside SAR and topside SAR. Therefore, this embodiment can effectively reduce the antenna SAR peak.

[0125] In addition, if Figure 8d As shown, Figure 8a The efficiency of one antenna state of the antenna module shown is given by Figure 8d It can be seen that Figure 8a The antenna module shown can effectively cover the B5, B3, and B40 frequency bands, i.e. Figure 8a The antenna module shown can effectively cover the low frequency and medium and high frequency bands, and the medium frequency has low SAR performance.

[0126] It should be noted that if Figure 8a In the illustrated embodiment, the first segment AB and the fourth segment AE are parallel to the first surface T1 and spaced apart, and the second segment BC and the third segment CD are parallel to the second surface T2 and spaced apart. In other embodiments, the first segment AB and the fourth segment AE may be parallel to the second surface T2, and the second segment BC and the third segment CD may be parallel to the first surface T1 and spaced apart. This is not specifically limited here.

[0127] In some embodiments, as Figure 9a As shown, one of the first segment AB and the second segment BC that is parallel to the first surface T1 includes a first main portion 41 and a first extension portion 42. The first main portion 41 is parallel to and spaced apart from the first surface T1. A third side 411 of the first main portion 41 extends outward to form the first extension portion 42. The first extension portion 42 is parallel to and spaced apart from the second surface T2. The third side 411 is the long side of the first main portion 41 that faces the second surface T2.

[0128] The first gap 10 is provided corresponding to a middle area of the second surface T2 along the thickness direction of the ground plate 1 .

[0129] In some embodiments, as Figure 3a The first segment AB shown is parallel to the first surface T1. In this case, the first segment AB includes a first main portion 41 and a first extension portion 42. Figure 4a In the case where the second segment BC is parallel to the first surface T1, the second segment BC includes a first main portion 41 and a first extension portion 42. For ease of description, the embodiment of the present application is described by taking the first segment AB including the first main portion 41 and the first extension portion 42 as an example, which does not constitute a specific limitation.

[0130] It should be noted that, in some embodiments, the position of the first gap 10 can be adjusted so that Figure 9b As shown, the first gap 10 is aligned with the angle between the first surface T1 and the second surface T2, and the first gap 10 is wider; or Figure 9c As shown, the width of the second segment BC is increased so that the first gap 10 is aligned with the angle between the first surface T1 and the second surface T2, and the first gap 10 is narrower; or Figure 9d As shown, the width of the first segment AB is increased so that the first gap 10 is aligned with a region of the second surface T2 away from the first surface T1 .

[0131] Figure 9a 、 Figure 9b 、 Figure 9c and Figure 9d The normalized SAR distribution of the antenna module at the intermediate frequency is shown in Table 3 below:

[0132] Table 3

[0133]

[0134] As shown in Table 3 above, Figure 9aAs shown, when the width of the first segment AB is increased and the first gap 10 is aligned with the middle area of the second surface T2, the top surface SAR of the antenna module facing the first surface T1 of the ground plate 1 and the back surface SAR facing away from the first surface T1 are balanced, thereby having a relatively low SAR peak.

[0135] As an optional implementation, Figure 10a As shown, the fourth segment AE includes a second main body portion 51 and a second extension portion 52. The second main body portion 51 is parallel to the first surface T1 and is spaced apart. The fourth side 511 of the second main body portion 51 extends outward to form the second extension portion 52. The second extension portion 52 is spaced apart from the outer peripheral surface of the grounding plate 1. The fourth side 511 is the long side of the second main body portion 51 facing the second surface T2.

[0136] In some embodiments, as Figure 10a As shown, in an electronic device, a border 203 is typically provided around the periphery of the ground plate 1. The projection area of the second gap 20 on the border 203 is biased toward the side of the border 203 facing away from the first surface T1. For example, assuming that the width of the border 203 along the thickness direction of the ground plate 1 is W1, and the width of the second extension 52 along the thickness direction of the ground plate 1 is W2, in this case, W2 ≥ 1 / 2W1.

[0137] In some embodiments, the length of the second extension portion 52 along the second side S2 may be as equal as possible to the length of the fourth segment AE, for example: Figure 10a As shown, assuming that the length of the fourth segment AE is L1 and the length of the second extension portion 52 is L2, L2≈L1 is achieved as much as possible.

[0138] In this embodiment, the fourth segment AE can be extended toward the outer peripheral surface of the ground plate 1 and parallel to the second surface T2 of the ground plate 1. Figure 8a On the basis of the antenna module shown, the field distribution intensity of the antenna module toward the second side S2 is further enhanced, thereby reducing the field distribution intensity of the antenna module where the SAR peak is located toward the top or back of the ground plate 1, which can lower the SAR peak of the antenna module.

[0139] For example: Using Figure 10b The simulation scenario shown is Figure 10a and Figure 8a The tangential electric field strength and magnetic field strength of the human tissue fluid cross section in the direction of the second side S2 of the antenna module are tested, and the test results shown in Table 4 below can be obtained:

[0140] Table 4

[0141]

[0142]

[0143] From the above Table 4 we can see that Figure 10a The field distribution intensity of the antenna module shown is stronger in the direction toward the second side S2 , thereby having a better effect of lowering the field distribution intensity of the antenna module where the SAR peak is located in the direction toward the top or back of the ground plate 1 .

[0144] For example: Figure 10a and Figure 8a The normalized SAR distribution of the antenna module at the intermediate frequency is shown in Table 5 below:

[0145] Table 5

[0146]

[0147] As can be seen from Table 5 above, Figure 10a The normalized SAR values of the antenna module shown in each direction are Figure 8a The normalized SAR value of the antenna module shown is more uniform, resulting in a lower SAR peak.

[0148] like Figure 10c As shown, Figure 10a The efficiency curve of one antenna state of the antenna module shown is given by Figure 10c It can be seen that Figure 10a The antenna module shown covers the low-frequency B8 and medium-high frequency B3 frequency bands, indicating that the antenna module can still take into account the antenna efficiency of low and medium-high frequencies.

[0149] It is worth mentioning that, if Figure 10a The antenna module shown can achieve good low SAR effect at medium frequency. However, when the antenna module works at high frequency band, such as 2.6 GHz, Figure 10d As shown, at this time, the antenna mode is a full-wave mode folded 180° along the current reversal point. The fields formed by the two half-wave current distributions of this mode are superimposed to form a strong magnetic field, forming a Figure 10e The concentrated SAR hotspot distribution shown shows high SAR.

[0150] In this regard, the following embodiments of the present application can achieve low SAR of the antenna module in the high frequency band by adding parasitic branches.

[0151] As an optional implementation, Figure 11a or Figure 11b As shown, the antenna module further includes: a second radiator 4;

[0152] The second radiator 4 is located on a side of the first radiator 3 facing away from the second side S2, and the extension direction of the second radiator 4 is the same as the extension direction of the first side S1. A third gap 30 is provided between the first end of the second radiator 4 and the first radiator 3, and the second radiator 4 is coupled to the first radiator 3 through the third gap 30.

[0153] In some embodiments, as Figure 11a As shown, the second radiator 4 can be a 1 / 4 parasitic branch that can work in a high frequency band, such as the B7 band. At this time, the second end of the second radiator 4 is grounded, and the length L3 of the second radiator 4 is greater than or equal to 1 / 8 times λ High , and less than or equal to 1 / 4 times λ High .

[0154] In some embodiments, as Figure 11b As shown, the second radiator 4 can be a half-wavelength parasitic branch that can operate in a high frequency band, such as the B7 band, and the second radiator 4 is suspended, that is, the second radiator 4 is a suspended branch. At this time, there is no grounding point on the second radiator 4, and the length L4 of the second radiator 4 is greater than or equal to 1 / 4 times λ High , and less than or equal to 1 / 2 times λ High .

[0155] Among them, λ High is a wavelength corresponding to a high frequency band, and the second frequency band also includes the high frequency band.

[0156] Compared to Figure 11a In the embodiment shown, Figure 11b In the illustrated embodiment, the grounding of the second end of the second radiator 4 is deleted, and the length of the second radiator 4 is made longer.

[0157] In some embodiments, the second radiator 4 can be arranged parallel to the first surface T1 of the ground plate 1, or can be arranged parallel to the second surface T2 of the ground plate 1, or the second radiator 4 can have a V-groove structure to cover the edge areas of both the first surface T1 and the second surface T2. For ease of description, the embodiments of the present application are described as an example in which the second radiator 4 can be arranged parallel to the first surface T1 of the ground plate 1, and this does not constitute a specific limitation.

[0158] This embodiment can improve the SAR performance of the antenna module in high frequency bands, such as the B7 band.

[0159] For example: Figure 11c As shown, the current on the first radiator 3 is the smallest at the end close to the second radiator 4, which is the maximum electric field point. It couples with the first end of the second radiator 4 to excite the second radiator 4, and the current distribution of the second radiator 4 is in the same direction as the current distribution on the first radiator 3. By adjusting λHigh / 8≤L3≤λ High / 4, making the resonant frequency of the second radiator 4 slightly higher than 2.6GHz, so that the current distribution diameter of the resonant mode of the antenna module at 2.6GHz is expanded, thereby expanding the SAR hotspot distribution area, reducing the SAR peak, and achieving low SAR characteristics in the high frequency band. At this time, the SAR hotspot diagram of the antenna module at 2.6GHz is as follows Figure 11d As shown, by comparing 11d and Figure 10e It can be seen that after adding the second radiator 4, the SAR distribution area of the antenna module in the high-frequency band is larger, thereby achieving low SAR characteristics in the high-frequency band.

[0160] For example: Figure 11a and Figure 10a The normalized SAR distribution of the antenna module in the medium frequency and high frequency bands is shown in Table 6 below:

[0161] Table 6

[0162]

[0163]

[0164] As can be seen from Table 6 above, Figure 11a The antenna module shown is compared to Figure 10a The antenna module shown maintains low SAR performance at mid-band frequencies while significantly reducing normalized SAR at high frequencies, with the maximum SAR peak decreasing by more than 3dB. This shows that by adding the second radiator 4, high-frequency SAR performance can be further optimized while maintaining mid-band SAR performance.

[0165] In addition, if Figure 11e As shown, Figure 11a The efficiency of one of the antenna states of the antenna module shown is measured by Figure 11e It can be seen that Figure 11a The antenna module shown can cover both low frequencies and medium and high frequencies.

[0166] As an optional implementation, Figure 12a or Figure 12b As shown, the second radiator 4 includes a fifth segment GH and a sixth segment IJ extending in the same direction;

[0167] The third gap 30 is located between the first end of the fifth segment GH and the first radiator 3 . A fourth gap 40 is provided between the second end of the fifth segment GH and the first end of the sixth segment IJ. The sixth segment IJ is coupled to the fifth segment GH via the fourth gap 40 .

[0168] In some embodiments, the second end of the second radiator 4 is grounded, and the equivalent electrical length of the fifth segment GH is greater than or equal to 1 / 4 times λHigh and less than or equal to 1 / 2 times λ High , the equivalent electrical length of the sixth segment IJ is greater than or equal to 1 / 8 times λ High and less than or equal to 1 / 4 times λ High , the total equivalent electrical length of the second radiator 4 is greater than or equal to 3 / 8 times λ High and less than or equal to 6 / 8 times λ High ;or,

[0169] The second radiator 4 is suspended, the equivalent electrical length of the fifth segment GH is equal to the equivalent electrical length of the sixth segment IJ, and the total equivalent electrical length of the second radiator 4 is greater than or equal to 4 / 8 times λ High and less than or equal to 7 / 8 times λ High ;

[0170] Among them, λ High is a wavelength corresponding to a high frequency band, and the second frequency band also includes the high frequency band.

[0171] In one embodiment, Figure 12a As shown, the second end of the second radiator 4 is grounded. In this case, the fifth segment GH is a suspended branch and the sixth segment IJ is a grounded branch. Assuming that the total equivalent electrical length of the second radiator 4 is L5, the equivalent electrical length of the fifth segment GH is L6, and the equivalent electrical length of the sixth segment IJ is L7, then 3λ is satisfied. High / 8≤L5≤6λ High / 8, and λ High / 4≤L6≤λ High / 2,λ High / 8≤L7≤λ High / 4.

[0172] In another embodiment, Figure 12b As shown, the second radiator 4 is suspended. In this case, the fifth segment GH and the sixth segment IJ are two suspended branches of equal length. Assuming that the total equivalent electrical length of the second radiator 4 is L8, 4λ is satisfied. High / 8≤L8≤7λ High / 8.

[0173] Among them, λ High is a wavelength corresponding to a high frequency band, and the second frequency band also includes the high frequency band.

[0174] Compared to Figure 12a In the embodiment shown, Figure 12b In the embodiment shown, the grounding of the second end of the second radiator 4 is deleted, that is, the second end J of the sixth segment IJ is not grounded, so that the length of the second radiator 4 is longer, specifically, the length of the fifth segment GH is kept the same as that of the sixth segment GH. Figure 12aThe lengths of the fifth segments GH in the illustrated embodiment are substantially the same, and the length of the sixth segment IJ is shortened.

[0175] For the sake of convenience, in the following examples of this application, Figure 12a The antenna module shown is used as an example for illustration and does not constitute a specific limitation.

[0176] like Figure 12c As shown, Figure 12a The current distribution of the antenna module in the 2.6 GHz resonant mode is that uniform unidirectional current vectors are distributed on both the first radiator 3 and the second radiator 4 .

[0177] pass Figure 12d and Figure 12e contrast Figure 12a and Figure 11a The antenna efficiency curves of the antenna module shown are at low frequency and medium and high frequency. Figure 12a After the antenna module is loaded with distributed parasitic radiators, the radiation efficiency of the antenna module at low frequencies and medium and high frequencies is improved.

[0178] This embodiment Figure 11a or Figure 11b On the basis of the antenna module shown, the second radiator 4 is designed as a distributed structure, combined with the equivalent capacitance design of the antenna gap. The beneficial effect of this optimization is that it can make the current distribution aperture of the antenna module in the high-frequency resonant mode larger, further improving the radiation efficiency.

[0179] It is worth mentioning that, if Figure 12a The antenna module shown can still maintain Figure 11a The antenna module shown has similar low SAR.

[0180] For example: Figure 12a and Figure 11a The normalized SAR distribution of the antenna module in the medium frequency and high frequency bands is shown in Table 7 below:

[0181] Table 7

[0182]

[0183]

[0184] As can be seen from Table 7 above, Figure 12a After loading the distributed parasitic radiation branches, the antenna module shown in the figure is Figure 11a The antenna module shown here is loaded with an integrated parasitic radiation branch, maintaining low SAR performance at medium and high frequencies.

[0185] In addition, if Figure 12f shown Figure 12aThe antenna efficiency of the antenna module in one of the antenna states is shown. Figure 12a The antenna module shown covers the B8, B3 and B7 frequency bands, indicating Figure 12a The antenna module shown can effectively cover the low frequency band and the medium and high frequency band. Figure 12a The antenna module shown is maintained as Figure 11a The antenna module shown has low SAR performance in the medium and high frequencies while further improving the radiation efficiency in the low and medium and high frequencies.

[0186] In some embodiments, the third gap 30 or the fourth gap 40 may be formed as follows: Figure 13a 、 Figure 13b and Figure 13c The structure shown in FIG. 1 can change the equivalent capacitance of the gap by changing the interlaced shape of the radiators on both sides of the gap, thereby flexibly adjusting the equivalent capacitance of the third gap 30 or the fourth gap 40. For example: Figure 13a 、 Figure 13b and Figure 13c As shown, Figure 13b The gap path P1 is the longest, Figure 13c The gap path P3 is the shortest, so that Figure 13b The equivalent capacitance of the gap is the largest, and Figure 13c The equivalent capacitance value of the gap is the smallest.

[0187] It should be noted that the sidewalls of the third gap 30 or the fourth gap 40 may have various interwoven shapes. Figure 13a 、 Figure 13b and Figure 13c This list is for illustrative purposes only and is not exhaustive.

[0188] It is worth mentioning that the antenna module in the embodiment of the present application may also include structures or devices not listed in the above embodiments.

[0189] For example: Figure 14 、 Figure 15 、 Figure 16a 、 Figure 16b 、 Figure 16c and Figure 16d As shown, a switch circuit SW can be set at the grounding point of the first radiator 3. By adjusting the switch circuit SW, the grounding inductance or loading capacitance of the first radiator 3 can be changed, thereby realizing the switching of the antenna module between different frequency bands.

[0190] In addition, the radiator in the embodiment of the present application may be provided with a through hole, a groove or a protrusion, for example: Figure 17 or Figure 18 As shown, a groove Q1 may be partially formed on the first radiator 3; or Figure 19 As shown, the first radiator 3 can be partially bent Q2; or, as shown Figure 20 As shown, for the first gap 10 or the second gap 20 in the embodiment of the present application, a bent gap structure can be designed.

[0191] The present application also provides an electronic device, which includes any antenna module in the aforementioned embodiments of the present application.

[0192] In some embodiments, the electronic device in the embodiments of the present application may be a terminal, or may be other devices other than a terminal. For example, the electronic device may be a mobile phone, a tablet computer, a laptop computer, a PDA, an in-vehicle electronic device, a mobile internet device (MID), an augmented reality (AR) / virtual reality (VR) device, a robot, a wearable device, an ultra-mobile personal computer (UMPC), a netbook, or a personal digital assistant (PDA), etc. It may also be a server, a network attached storage (NAS), a personal computer (PC), a television (TV), an ATM, or an kiosks, etc., and the embodiments of the present application do not specifically limit this.

[0193] For ease of explanation, the embodiments of the present application are generally described by taking a mobile phone as an example of an electronic device.

[0194] In some embodiments, as Figure 21 As shown, the ground plate 1 can be the main ground of the mobile phone. The ground plate 1 is sandwiched between the back cover 201 and the display screen 202 of the electronic device, and the frame 203 of the mobile phone surrounds the outer periphery of the ground plate 1.

[0195] In some embodiments, as Figure 22 As shown, the frame 203 can be a metal frame. In this case, the radiator in the antenna module can be set on the metal frame, such as the first radiator 3 is set on the metal frame, or the first radiator 3 and the second radiator 4 are set on the metal frame.

[0196] In other embodiments, Figure 23 As shown, the frame 203 may be a non-metallic structure, such as a plastic frame. In this case, the radiator in the antenna module may be a flexible printed circuit (FPC) that is tightly attached to the inner wall of the plastic frame.

[0197] The electronic device of the embodiment of the present application can use the antenna layout space originally used for the second frequency band to realize the antenna layout of the first frequency band and the second frequency band, which is beneficial to saving the antenna layout space on the electronic device and can improve the antenna efficiency of the second frequency band without increasing the radiation power of the second frequency band.

[0198] As an optional implementation manner, the first side is parallel to the short side of the electronic device and faces the top of the electronic device, and the second side is parallel to the long side of the electronic device.

[0199] In some embodiments, by arranging the first segment and the second segment in an area near the second side of the top of the electronic device, and arranging the third segment and the fourth segment on the long side of the electronic device, the first segment and the second segment can be used to improve the radiation pattern of the top of the electronic device, and the third segment and the fourth segment located on the long side can be used to pull the intermediate frequency SAR to the second side of the electronic device, so that the near-field energy of the antenna can be more evenly distributed in space, and the SAR hotspots are distributed on the top and side of the electronic device to form two strong areas, so that the SAR peak is lower.

[0200] In other embodiments, by arranging the first segment, the second segment, and the second radiator in the area near the second side of the top of the electronic device, and arranging the third segment and the fourth segment on the long side of the electronic device, the first segment and the second segment can be used to improve the radiation pattern of the top of the electronic device. For high frequencies, the high-frequency resonance mode of the second radiator can also be used to increase the aperture of the high-frequency antenna, thereby expanding the SAR hotspot distribution area, reducing the SAR peak, and achieving low SAR characteristics in the high-frequency band; for medium frequencies, the third segment and the fourth segment located on the long side are used to pull the medium-frequency SAR to the second side of the electronic device, so that the near-field energy of the antenna can be more evenly distributed in space, and the SAR hotspots are distributed on the top and side of the electronic device to form two strong areas, thereby achieving low SAR characteristics in the medium-frequency band.

[0201] It should be noted that, in this document, the terms "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus comprising a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or apparatus comprising the element.

[0202] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of this application, ordinary technicians in this field can also make many forms without departing from the purpose of this application and the scope of protection of the claims, all of which are within the protection of this application.

Claims

1. An antenna module, characterized in that: include: a ground plate, a feed source and a first radiator; The first radiator corresponds to a first vertex corner of the ground plate, and the first radiator is spaced apart from the ground plate, and the first vertex corner is located at a connection area between a first side edge of the ground plate and a second side edge of the ground plate; The feed source is electrically connected to the first radiator, the first radiator includes a first segment, a second segment, and a third segment connected in sequence, a first end of the first segment is electrically connected to the ground plate, and a second end of the first segment is folded and extended to form the second segment. The length of the first radiator is L, and the length of the first segment is 1 / 3 L. The first segment and the second segment extend in the same direction as the first side, and a first gap exists between the long side of the first segment and the long side of the second segment. The third segment extends in the same direction as the second side. The operating frequency band of the antenna module includes a first frequency band and a second frequency band, the frequency of the first frequency band is lower than the frequency of the second frequency band, wherein L is 3 / 4 times the second wavelength, and the second wavelength is the wavelength corresponding to the second frequency band.

2. The antenna module according to claim 1, wherein: The first segment is parallel to and spaced apart from the first surface of the ground plate, and the second segment and the third segment are parallel to and spaced apart from the second surface of the ground plate; or the second segment and the third segment are parallel to and spaced apart from the first surface of the ground plate, and the first segment is parallel to and spaced apart from the second surface of the ground plate; The first surface is a plane where the first side and the second side are located, the second surface is an outer peripheral surface of the ground plate, and the second surface is parallel to the thickness direction of the ground plate.

3. The antenna module according to claim 2, wherein: The first radiator further includes: a fourth segment; The first end of the fourth segment is electrically connected to the first end of the first segment; the second end of the fourth segment is bent and parallel to the third segment, and a second gap is formed between the long side of the fourth segment and the long side of the third segment.

4. The antenna module according to claim 3, wherein: The feed source is electrically connected to the first segment or the fourth segment.

5. The antenna module according to claim 4, wherein: In the case where the feed source is electrically connected to the fourth segment, the distance between the feed point of the feed source and the first end of the fourth segment is less than or equal to 1 / 8 times λ Mid ; Among them, λ Mid is a wavelength corresponding to an intermediate frequency band, and the second frequency band includes the intermediate frequency band.

6. The antenna module according to claim 4, characterized in that: The equivalent electrical length of the fourth segment is 1 / 3L.

7. The antenna module according to claim 4, wherein: The second frequency band includes the intermediate frequency band, and L is 3 / 4 times λ Mid , the distance between the first end of the fourth segment and the second side is less than 1 / 8 times λ Mid ; Among them, λ Mid is the wavelength corresponding to the intermediate frequency band.

8. The antenna module according to claim 2 or 3, characterized in that: One of the first segment and the second segment parallel to the first surface comprises a first main portion and a first extension portion, the first main portion being parallel to and spaced apart from the first surface, a third side of the first main portion extending outward to form the first extension portion, the first extension portion being parallel to and spaced apart from the second surface, the third side being a long side of the first main portion facing the second surface; The first gap is provided corresponding to a middle area of the second surface along a thickness direction of the ground plate.

9. The antenna module according to claim 3, wherein: The fourth segment includes a second main body and a second extension portion, the second main body portion is parallel to the first surface and is spaced apart, the fourth side of the second main body portion extends outward to form the second extension portion, the second extension portion is spaced apart from the outer peripheral surface of the grounding plate, and the fourth side is the long side of the second main body portion facing the second surface.

10. The antenna module according to any one of claims 3 to 9, characterized in that: Also includes: Second radiator; The second radiator is located on a side of the first radiator facing away from the second side, and an extension direction of the second radiator is the same as an extension direction of the first side. A third gap is provided between the first end of the second radiator and the first radiator, and the second radiator is coupled to the first radiator through the third gap.

11. The antenna module according to claim 10, wherein: The second end of the second radiator is grounded, and the length of the second radiator is greater than or equal to 1 / 8 times λ High , and less than or equal to 1 / 4 times λ High ;or, The second radiator is suspended, and the length of the second radiator is greater than or equal to 1 / 4 times λ High , and less than or equal to 1 / 2 times λ High ; Among them, λ High is a wavelength corresponding to a high frequency band, and the second frequency band also includes the high frequency band.

12. The antenna module according to claim 10, wherein: The second radiator includes a fifth segment and a sixth segment extending in the same direction; The third gap is located between the first end of the fifth segment and the first radiator. A fourth gap is provided between the second end of the fifth segment and the first end of the sixth segment. The sixth segment is coupled to the fifth segment through the fourth gap.

13. The antenna module according to claim 12, wherein: The second end of the second radiator is grounded, and the equivalent electrical length of the fifth segment is greater than or equal to 1 / 4 times λ High and less than or equal to 1 / 2 times λ High , and the equivalent electrical length of the sixth segment is greater than or equal to 1 / 8 times λ High and less than or equal to 1 / 4 times λ High , the total equivalent electrical length of the second radiator is greater than or equal to 3 / 8 times λ High and less than or equal to 6 / 8 times λ High ;or, The second radiator is suspended, the equivalent electrical length of the fifth segment is equal to the equivalent electrical length of the sixth segment, and the total equivalent electrical length of the second radiator is greater than or equal to 4 / 8 times λ High and less than or equal to 7 / 8 times λ High ; Among them, λ High is a wavelength corresponding to a high frequency band, and the second frequency band also includes the high frequency band.

14. An electronic device, characterized in that: The invention comprises the antenna module according to any one of claims 1 to 13.

15. The electronic device according to claim 14, characterized in that The first side is parallel to the short side of the electronic device and faces the top of the electronic device, and the second side is parallel to the long side of the electronic device.

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