Antenna module and electronic device

Abstract

The application discloses an antenna module and an electronic device. The antenna module comprises a first radiator, the first radiator is a ring-shaped radiator, and the first radiator has a first end portion and a second end portion; a second radiator, the second radiator is integrally connected or coupled with the first radiator; a first feed source, a first end of the first feed source is electrically connected with the first end portion, and a second end of the first feed source is grounded; and a first tuning unit, a first end of the first tuning unit is electrically connected with the second end portion, and a second end of the first tuning unit is grounded.

Description

Technical Field

[0001] This application belongs to the field of antenna technology, specifically relating to an antenna module and electronic equipment. Background Technology

[0002] Because the frequency of an antenna after tuning cannot deviate too far from the fundamental resonant mode frequency, otherwise the antenna radiation efficiency will drop rapidly, making it difficult to cover certain independent specific frequency bands. For example, for frequency bands such as B32 (1452MHz~1496MHz) and n74 (1427MHz~1518MHz), the nearest frequency band is B3 (1710MHz~1880MHz); therefore, if B32 / n74 is taken into account, it means that other commonly used frequency bands such as B2 (1850MHz~1990MHz), B1 (1920MHz~2170MHz), B40 (2300MHz~2170MHz), and B7 (2500MHz~2690MHz) cannot be covered, even if performance is not guaranteed.

[0003] It is evident that the antenna modules in the relevant technologies suffer from a limited frequency coverage range. Summary of the Invention

[0004] This application aims to provide an antenna module and electronic device that can solve the problem of small frequency coverage in antenna modules in related technologies.

[0005] To solve the above-mentioned technical problems, this application is implemented as follows:

[0006] In a first aspect, embodiments of this application propose an antenna module, comprising:

[0007] A first radiator, wherein the first radiator is a ring radiator and has a first end and a second end;

[0008] The second radiator is integrally connected to or coupled to the first radiator.

[0009] A first feed source, wherein a first end of the first feed source is electrically connected to the first end, and a second end of the first feed source is grounded;

[0010] The first tuning unit has a first end electrically connected to the second end, and the second end of the first tuning unit is grounded.

[0011] Secondly, embodiments of this application provide an electronic device including an antenna module as described in the first aspect.

[0012] In the embodiments of this application, since the first radiator is a ring radiator, the characteristic that the frequency of each resonant mode basically matches the multiple of the resonant mode of the first radiator (i.e., the loop antenna) can be utilized. Then, by adjusting the impedance of the first tuning unit, the electrical length of the first radiator can be adjusted, so that the first radiator can excite the frequency of each resonant mode and achieve the overlap and complementarity of the adjustable range of the mode resonant frequencies, thereby achieving coverage of commonly used wireless communication frequency bands without dead angles, that is, achieving the purpose of increasing the frequency coverage range of the antenna module.

[0013] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0014] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0015] Figure 1 This is one of the structural diagrams of the antenna module provided in the embodiments of this application;

[0016] Figure 2 This is a reflection coefficient-frequency diagram of the antenna module provided in the embodiments of this application;

[0017] Figure 3 This is the second structural diagram of the antenna module provided in the embodiments of this application;

[0018] Figure 4 This is the third structural diagram of the antenna module provided in the embodiments of this application;

[0019] Figure 5 This is the fourth structural diagram of the antenna module provided in the embodiments of this application;

[0020] Figure 6 This is a structural diagram of the fourth tuning unit provided in the embodiments of this application. Detailed Implementation

[0021] The embodiments of this application will now be described in detail. Examples of these embodiments are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0022] The terms "first" and "second" in the specification and claims of this application may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise stated, "multiple" means two or more. Furthermore, "and / or" in the specification and claims indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0023] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0024] like Figures 1 to 6 As shown, this application embodiment provides an antenna module, including:

[0025] The first radiator 10 is a ring radiator, and the first radiator 10 has a first end 11 and a second end 12;

[0026] The second radiator 20 is integrally connected or coupled to the first radiator 10;

[0027] The first feed 30 has a first end electrically connected to the first end 11 and a second end grounded.

[0028] The first tuning unit 40 has its first end electrically connected to its second end 12, and its second end grounded.

[0029] The integral connection between the second radiator 20 and the first radiator 10 can be understood as the direct connection between the second radiator 20 and the first radiator 10; the coupled connection between the second radiator 20 and the first radiator 10 can be understood as the coupling connection between the second radiator 20 and the first radiator 10 through the antenna gap.

[0030] The first radiator 10 is a ring radiator, which can be understood as the first radiator 10 having a loop structure. That is, when the first radiator 10 of the antenna module transmits or receives signals, the first radiator 10 can be understood as a loop antenna radiator, that is, the essence of the first radiator 10 is a loop antenna.

[0031] Furthermore, for the first radiator 10 (i.e., the loop antenna), its excited resonant modes are shown in Table 1, and the lowest frequency resonant mode λ / 2 can be determined as the fundamental mode. The resonant modes of the first radiator 10 are continuous in multiples and can be incremented sequentially by λ / 2. For example, assuming the fundamental mode resonant frequency is 800MHz, the resonant mode frequencies of the first radiator 10 should ideally increase in increments of 800MHz.

[0032] Table 1

[0033] Electrical length of loop antenna λ / 2 λ 3λ / 2 2λ 5λ / 2 3λ Frequency multiples of the fundamental mode resonance 1 2 3 4 5 6 Resonant mode frequency (MHz) 800 1600 2400 3200 4000 4800

[0034] In Table 1, the electrical length represents the ratio of the physical length of the antenna to the wavelength of the transmitted electromagnetic wave. That is, the electrical length of the loop antenna can be understood as the ratio of the physical length of the first radiator 10 to the wavelength of the transmitted electromagnetic wave.

[0035] Table 2 defines the required resonant mode frequency by combining frequency bands with similar frequencies based on currently commonly used wireless communication frequency bands.

[0036] Table 2

[0037]

[0038]

[0039] As can be seen from Tables 1 and 2, the frequencies of each resonant mode basically match the multiples of the resonant modes of the first radiator 10 (i.e., the loop antenna). That is, when the first radiator 10 is a ring radiator, or a loop antenna radiator, the characteristic that the frequencies of each resonant mode basically match the multiples of the resonant modes of the first radiator 10 can be utilized. Then, by adjusting the impedance of the first tuning unit 40, the electrical length of the first radiator 10 can be adjusted, enabling the first radiator 10 to excite the frequency of each resonant mode. This achieves overlapping and complementarity of the adjustable ranges of the mode resonant frequencies, thereby achieving seamless coverage of commonly used wireless communication frequency bands, thus increasing the frequency coverage range of the antenna module.

[0040] Assuming the fundamental mode resonant frequency is 800MHz, and the resonant mode frequency of the first radiator 10 can ideally increase in increments of 800MHz, that is, the resonant mode frequencies that the first radiator 10 can excite include 800MHz, 1600MHz, ... 4000MHz and 4800MHz, etc., and by adjusting the first tuning unit 40, the antenna module can cover the frequency bands B28, B20, n74, n79, n77, B28, B1, B2, B3, B5, B7 and B40 in Table 2, thereby effectively improving the frequency coverage range of the antenna module.

[0041] The first tuning unit 40 can be composed of a capacitor, an inductor, a resistor and a switch. The impedance of the first tuning unit 40 can be adjusted by switching the switch, so as to adjust the electrical length of the first radiator 10, so that the first radiator 10 can excite the frequency of each resonant mode, thereby realizing the overlapping and complementarity of the adjustable range of the mode resonant frequencies.

[0042] Moreover, since the first radiator 10 has multiple resonant modes, and the electrical length of the first radiator 10 can be adjusted through the first tuning unit 40, the structure of the antenna module can be effectively simplified and the workload of antenna wiring debugging can be reduced compared to directly adjusting the antenna wiring.

[0043] Optionally, the antenna module includes a first radiating stub 51, a second radiating stub 52 formed by extending the first end of the first radiating stub 51 toward a first direction, and a third radiating stub 53 formed by extending the first end of the first radiating stub 51 toward a second direction.

[0044] The first radiating branch 51 and the second radiating branch 52 are used to form the first radiator 10, that is, to form a ring-shaped radiator with a ring structure; the first radiating branch 51 and the third radiating branch 53 are used to form the second radiator 20.

[0045] In one example, the second radiator 20 can be an L-shaped linear structure.

[0046] In this embodiment, the first radiator 10 and the second radiator 20 can share some radiating branches, that is, they can share the first radiating branch 51, so as to reduce the physical length of the antenna module and realize the miniaturization design of the antenna module, so that the antenna module can be applied to smaller electronic devices.

[0047] like Figure 1 As shown, the first radiating branch 51 and the second radiating branch 52 are used to form the first radiator 10, and the second end of the first radiating branch 51 is the second end 12, that is, the second end of the first radiating branch 51 can be set as the grounding point of the first radiator 10, that is, the first radiator 10 is electrically connected to the grounding structure through the second end of the first radiating branch 51.

[0048] like Figure 1 As shown, the first tuning unit 40 includes devices such as resistors, variable capacitors, inductors, and switches. By switching or combining the paths of the switches, the grounding point of the first radiator 10 can be connected to different devices, such as 0-ohm resistors, inductors or capacitors of different values, to achieve impedance tuning of the antenna module.

[0049] From the perspective of antenna topology, the first radiator 10 can be understood as a loop antenna, and the second radiator 20 can be understood as an inverted-F antenna (IFA), with the second end of the first radiating stub 51 being the common ground point of the first radiator 10 and the second radiator 20. Figure 1 As shown, for both the first radiator 10 and the second radiator 20, their grounding points are in the high-current region of the antenna module. Connecting a 0-ohm resistor to ground in the high-current region is equivalent to direct grounding, and the resonant mode is at the fundamental resonant frequency. Connecting an inductor will achieve a loading effect, equivalent to lengthening the electrical length of the first radiator 10 and shifting the resonant mode frequency to a lower frequency. Connecting a capacitor will achieve a deloading effect, equivalent to shortening the electrical length of the first radiator 10 and shifting the resonant mode frequency to a higher frequency. That is, by adjusting the impedance of the first tuning unit 40, the first radiator 10 can excite the frequency of each resonant mode, thereby achieving overlapping and complementary adjustable ranges of mode resonant frequencies.

[0050] As shown in Tables 1 and 2 above, since each frequency band has a resonant mode with a frequency close to its center frequency to cover it, that is, the frequency of the resonant mode that the first radiator 10 can excite is close to the center frequency of the frequency band in Table 2, the electrical length of the first radiator 10 can be adjusted by the first tuning unit 40, thereby achieving the overlapping and complementarity of the adjustable range of the mode resonant frequency, and achieving the purpose of increasing the frequency coverage range of the antenna module.

[0051] Furthermore, the second radiator 20 can be excited to produce a λ / 4 monopole resonant mode and can be used to support the 3GHz to 6GHz frequency band, thereby expanding and supplementing the frequency range covered by the first radiator 10. The principle of resonant mode frequency shifting for the second radiator 20 is similar to that for the first radiator 10. When the second end of the first radiating stub 51 is directly grounded through a 0-ohm resistor, it is equivalent to direct grounding, and its resonant mode is at the fundamental resonant frequency. When the second end of the first radiating stub 51 is grounded through an inductor, a loading effect is achieved, which is equivalent to lengthening the electrical length of the second radiator 20 and shifting the resonant mode frequency to a lower frequency. When the second end of the first radiating stub 51 is grounded through a capacitor, a deloading effect is achieved, which is equivalent to shortening the electrical length of the second radiator 20 and shifting the resonant mode frequency to a higher frequency.

[0052] like Figure 2 As shown in the reflection coefficient-frequency diagram of the antenna module, by using, Figure 1The antenna module shown not only solves the problem of difficult coverage for frequencies such as B32 (1452MHz~1496MHz) and n74 (1427MHz~1518MHz), but also ensures that the mutual coverage between resonant modes covers any frequency band with an adjacent frequency resonant mode, thus avoiding the problems of dead zones in frequency band coverage and the sharp drop in frequency band efficiency caused by deviating too far from the frequency of the antenna resonant mode.

[0053] like Figure 3 As shown, the first radiating branch 51 and the second radiating branch 52 are used to form the first radiator 10, and the second end of the first radiating branch 51 is the first end 11, that is, the second end of the first radiating branch 51 can be set as the feed point of the first radiator 10, that is, the first radiator 10 is electrically connected to the first feed source 30 through the second end of the first radiating branch 51.

[0054] The antenna module also includes a second tuning unit 60, the first end of which is electrically connected to the feed point, and the second end of which is electrically connected to the first end of the first feed source 30.

[0055] In this embodiment, the antenna module can not only excite the first radiator 10 and the second radiator 20 to radiate, but also excite the third radiator to radiate. The third radiator includes the third radiating branch 53 and the other parts of the first radiator 10 except for the first radiating branch 51.

[0056] in, Figure 3 The working principle of the first radiator 10 and the second radiator 20 in the middle is the same as Figure 1 The first and second radiators in the antenna module shown operate on the same principle: the first radiator 10 can excite a loop resonant mode, and the second radiator 20 can excite a λ / 4 monopole resonant mode, achieving the following: Figure 1 The frequency range covered by the antenna module shown.

[0057] The resonant mode excited by the third radiator is also a λ / 4 monopole resonant mode, but its resonant frequency is lower due to its longer electrical length. Similar to the tuning of the second radiator 20, when the grounding point of the third radiator, i.e., the second end 12 of the first radiator 10, is switched to 0-ohm resistor grounding through the first tuning unit 40, its resonant mode is at the fundamental resonant frequency; when the grounding point of the third radiator, i.e., the second end 12 of the first radiator 10, is switched to inductive grounding through the first tuning unit 40, a loading effect is achieved, which is equivalent to lengthening the electrical length of the second radiator 20 and shifting the resonant mode frequency to a lower frequency; when the grounding point of the third radiator, i.e., the second end 12 of the first radiator 10, is switched to capacitor grounding through the first tuning unit 40, a deloading effect is achieved, which is equivalent to shortening the electrical length of the second radiator 20 and shifting the resonant mode frequency to a higher frequency.

[0058] The second tuning unit 60, which is electrically connected to the first feed 30, includes devices such as resistors, variable capacitors, inductors, and switches. By switching or combining the paths of the switches, different devices, such as 0-ohm resistors, inductors or capacitors of different values, can be connected to the first end of the first feed 30 to achieve impedance tuning of the antenna module.

[0059] Specifically, when the first end of the first feed source 30 is electrically connected to the feed point of the radiator through a capacitor (i.e., the impedance tuning device of the second tuning unit 60), and when the second tuning unit 60 switches to a small value capacitor, the resonant frequency of the third radiator can be shifted towards a higher frequency; correspondingly, when the second tuning unit 60 switches to a high value capacitor, the resonant frequency of the third radiator can be shifted towards a lower frequency.

[0060] Compared to Figure 1 The antenna module shown, Figure 3 The antenna module shown can further enrich the tuning combinations of the antenna module by connecting tuning units to both the first end 11 and the second end 12, and further improve the tuning flexibility of the resonant mode of the antenna module.

[0061] Optionally, such as Figure 4 As shown, the second radiator 20 is coupled to the first radiator 10;

[0062] The second radiator 20 includes a third end 21 and a fourth end 22. The antenna module also includes a third tuning unit 70. The first end of the third tuning unit 70 is electrically connected to the third end 21, and the second end of the third tuning unit 70 is grounded.

[0063] The first radiator 10 can be understood as a loop antenna, and the second radiator 20 can be understood as an inverted F antenna.

[0064] In one example, the second radiator 20 can be an L-shaped linear structure.

[0065] The third tuning unit 70 includes devices such as resistors, variable capacitors, inductors, and switches. By switching or combining the paths of the switches, different devices can be connected to the grounding point of the first radiator 10, such as 0-ohm resistors, inductors or capacitors of different values, to achieve impedance tuning of the antenna module.

[0066] In this embodiment, by providing a third tuning unit 70, the frequency band coverage of the second radiator 20 can be effectively extended.

[0067] like Figure 3 As shown, a first gap 91 is provided between the radiating branch of the first radiator 10 including the first end and the radiating branch of the second radiator 20 including the third end, and the first radiator 10 and the second radiator 20 are coupled together through the first gap 91.

[0068] In some embodiments, the distance between the first end and the second end can be 1 mm to 2 mm; the distance between the traces of the first radiator 10 can be 1 mm to 2.5 mm; and the distance between the first end and the third end can be 0.5 mm to 1.5 mm.

[0069] Furthermore, the second radiator 20 can be understood as an inverted L-shaped parasitic element antenna, and the area between the first end 11 and the third end 21 can be understood as the magnetic field coupling feed region of the second radiator 20. Since the first end 11 is a strong current region with a strong magnetic field distribution, the second radiator 20 can be driven through spatial magnetic field coupling. Moreover, after passing through the magnetic field coupling region, the traces of the second radiator 20 are separated from those of the first radiator 10 in a back-to-back manner. For example, the traces of the first radiator 10 run to the right, and the traces of the second radiator 20 run to the left, thus giving the second radiator 20 an L-shaped linear structure. The purpose of this design is to counteract the current cancellation effect of the first radiator 10 and the second radiator 20, while also expanding the radiator aperture of the entire antenna module and improving antenna efficiency and bandwidth.

[0070] It should be noted that, Figure 4 The working principle of the first radiator 10 and the second radiator 20 shown is the same as Figure 1 The first radiator 10 and the second radiator 20 in the antenna module shown operate on the same principle: the first radiator 10 can be excited to produce a loop resonant mode, and the second radiator 20 can be excited to produce a λ / 4 monopole resonant mode, achieving the following results: Figure 1 The frequency range covered by the antenna module shown.

[0071] Furthermore, the second radiator 20 can excite a λ / 4 monopole resonant mode and can be used to support the 3GHz to 6GHz frequency band in order to extend and supplement the frequency range covered by the first radiator 10.

[0072] Furthermore, the magnetic field-coupled feeding effectively improves the resonant bandwidth of the second radiator 20. The back-to-back separation design also allows the resonant modes of the second radiator 20 and the first radiator 10 to merge, avoiding antenna efficiency dips caused by current cancellation.

[0073] Among them, by adopting such Figure 4 The antenna module shown can also solve the problem of poor coverage for frequencies such as B32 (1452MHz~1496MHz) and n74 (1427MHz~1518MHz). Moreover, the mutual coverage and compensation between resonant modes ensures that any frequency band is covered by an adjacent frequency antenna resonant mode, whether it is the low-frequency B28 (703MHz~803MHz), the high-frequency n79 (4400MHz~5000MHz), or even WIFI 5G (5.15GHz~5.85GHz). This avoids the problems of dead zones in frequency band coverage and the sharp drop in frequency band efficiency caused by deviating too far from the antenna resonant mode frequency.

[0074] Further optional, such as Figure 5 As shown, a fourth radiating branch 13 extends from the side of the first radiator 10 toward the second radiator 20, and a second gap 92 is formed between the end of the fourth radiating branch 13 and the fourth end 22.

[0075] The antenna module also includes a second feed 90, the first end of which is electrically connected to the second end of the third tuning unit 70, and the second end of the second feed 90 is grounded.

[0076] The first radiator 10 and the second radiator 20 are coupled together through the second gap 92.

[0077] The antenna module provided in this embodiment is similar to... Figure 4 The antenna modules shown are similar. The first radiator 10 can be understood as a loop antenna, and the second radiator 20 can be understood as an inverted F antenna. The first end 11 of the first radiator 10 has a feed point, that is, the first radiator 10 can be electrically connected to the first feed source 30 through the feed point of the first end 11. The second end 12 of the first radiator 10 has a ground point, that is, the first radiator 10 can be grounded through the ground point of the second end 12. The first end 11 and the second end 12 need to be set close to each other, with a spacing of 1 mm to 2 mm.

[0078] In one embodiment, the traces of the first radiator 10 can start from its first end 11 and form a ring structure, and the spacing between the traces is in the range of 1 mm to 2.5 mm.

[0079] Further optionally, the antenna module also includes a fourth tuning unit 80, the first end of the fourth tuning unit 80 being electrically connected to the first end 11, and the second end of the fourth tuning unit 80 being electrically connected to the first end of the first feed 30.

[0080] like Figure 6 As shown, the fourth tuning unit 80 includes a first capacitor 81, a first resistor 82, a first switch 83, and a second switch 84. The first end of the first capacitor 81 is electrically connected to the first end 11, and the second end of the first capacitor 81 is electrically connected to the first end of the first feed source 30 through the first switch. The first end of the first resistor 82 is electrically connected to the first end 11, and the second end of the first resistor 82 is electrically connected to the first end of the first feed source 30 through the second switch 84.

[0081] Specifically, when the first end 11 of the first radiator 10 is switched to a 0-ohm resistor and electrically connected to the first feed source 30, that is, when the fourth tuning unit 80 is switched to a 0-ohm resistor, the first radiator 10 can excite a loop resonant mode, and the wiring path corresponding to its associated electrical length is shown in path 1. When the first end 11 of the first radiator 10 is switched to a capacitor and electrically connected to the first feed source 30, that is, when the fourth tuning unit 80 is switched to a capacitor, due to the characteristic of the capacitor to block low frequencies and pass high frequencies, the first radiator 10 can excite two λ / 4 monoopole resonant modes, and the wiring paths corresponding to the electrical lengths associated with the two λ / 4 monoopole resonant modes are path 2 and path 3, respectively. The resonant mode frequency of path 2 is relatively low, generally designed to be around 0.7 GHz to 1 GHz; the resonant mode frequency of path 3 is relatively high, generally designed to be around 4.5 GHz to 6 GHz.

[0082] Furthermore, it should be noted that when the first end 11 of the first radiator 10 is switched to a small-value capacitor and electrically connected to the first feed source 30, the resonant mode frequency of the first radiator 10 will shift towards the high-frequency direction; correspondingly, when the first end of the first radiator 10 is switched to a large-value capacitor and electrically connected to the first feed source 30, the resonant mode frequency of the first radiator 10 will shift towards the low-frequency direction.

[0083] In this embodiment, the third end of the second radiator 20 and the fourth radiating branch 11 of the first radiator 10 can form an electric field coupling effect, thereby exciting and driving the second radiator 20.

[0084] In addition, the second radiator 20 is characterized by its ability to excite the λ / 4 monopole resonant mode. Due to its shorter electrical length, the frequency of its λ / 4 monopole resonant mode is relatively high, generally considered to fall within the range of 3 GHz to 6 GHz. The second radiator 20 can be used to support the 3 GHz to 6 GHz frequency band in order to expand and supplement the frequency range covered by the first radiator 10.

[0085] It should be noted that, Figure 3 , Figure 4 and Figure 5 The tuning methods of the antenna modules provided in the embodiments can all be referred to Figure 1 The tuning methods of the antenna modes shown all utilize the characteristics of multiple resonant modes of the first radiator 10, and the electrical length of the first radiator 10 can be adjusted through the first tuning unit 40 so that the first radiator 10 can excite the frequency of each resonant mode, thereby achieving the overlapping and complementarity of the adjustable range of the mode resonant frequencies.

[0086] Furthermore, for the tuning units such as the first tuning unit 40, the second tuning unit 60, the third tuning unit 70, and the fourth tuning unit 80 in the aforementioned embodiments, since the variable capacitor is equivalent to being on for the RF current when it is in a high capacitance state and equivalent to being off for the RF current when it is in a low capacitance state, the variable capacitor can be used to replace the switch, and the frequency tuning of the resonant mode of the antenna module can be achieved by switching between different capacitance values.

[0087] Furthermore, the adjustable devices in the aforementioned tuning unit are not limited to simple connecting capacitors or inductors; they can also utilize bandpass or bandstop filter networks built upon capacitors and inductors to enable or disable current at specific frequencies. In special scenarios such as when fewer frequency bands are required, and where the antenna module can provide sufficient coverage, switches can even be eliminated, eliminating the need for adjustability and thus reducing the cost of the antenna module.

[0088] This application also provides an electronic device including the antenna module described above.

[0089] It should be noted that the implementation method of the antenna module embodiment described above is also applicable to the embodiment of the electronic device and can achieve the same technical effect, so it will not be described again here.

[0090] Among them, electronic devices can be mobile phones, tablets, laptops, handheld computers, in-vehicle electronic devices, wearable devices, ultra-mobile personal computers (UMPCs), netbooks, or personal digital assistants (PDAs), etc.

[0091] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0092] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. An antenna module, characterized in that, include: A first radiator, wherein the first radiator is a ring radiator and has a first end and a second end; A second radiator is coupled to the first radiator; wherein the second radiator includes a third end and a fourth end, the third end is disposed away from the first radiator and is connected to a second feed source; the first radiator extends to the side facing the second radiator to form a fourth radiating branch, and there is a second gap between the end of the fourth radiating branch and the fourth end, and the first radiator and the second radiator are coupled to each other through the second gap; A first feed source, wherein a first end of the first feed source is electrically connected to the first end, and a second end of the first feed source is grounded; A first tuning unit, wherein a first end of the first tuning unit is electrically connected to a second end, and a second end of the first tuning unit is grounded; The fourth tuning unit includes a first capacitor, a first resistor, a first switch, and a second switch. The first end of the first capacitor is electrically connected to the first end, and the second end of the first capacitor is connected to the first end of the first feed source through the first switch. The first end of the first resistor is electrically connected to the first end, and the second end of the first resistor is electrically connected to the first end of the first feed source through the second switch. When the first end of the first radiator is switched to be electrically connected to the first feed source through the first resistor, the first radiator operates in loop resonant mode, and the routing path of the loop resonant mode is from the first end to the second end; When the first end of the first radiator is switched to be electrically connected to the first feed source through the first capacitor, the first radiator and the fourth radiating stub operate in two λ / 4 monopole resonant modes. The routing path of one λ / 4 monopole resonant mode is from the second end to the end of the fourth radiating stub, and the routing path of the other λ / 4 monopole resonant mode is from the first end to the end of the fourth radiating stub.

2. The antenna module according to claim 1, characterized in that, The second radiator is coupled to the first radiator; The antenna module further includes a third tuning unit, the first end of which is electrically connected to the third end, and the second end of which is grounded.

3. The antenna module according to claim 2, characterized in that, The first radiator has a first gap between the radiating branch of the first radiator including the first end and the radiating branch of the second radiator including the third end, and the first radiator and the second radiator are coupled together through the first gap.

4. The antenna module according to claim 2, characterized in that, The first end of the second feed source is electrically connected to the second end of the third tuning unit, and the second end of the second feed source is grounded.

5. An electronic device, characterized in that, Includes the antenna module as described in any one of claims 1 to 4.

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