Antenna module and electronic equipment

Abstract

The invention relates to an antenna module and electronic equipment. The antenna module comprises a first radiator, a second radiator, a first feed source, a second feed source, a gating switching circuit and a processing circuit. The first end of the second radiator and the first end of the first radiator are opposite and arranged at an interval, the second radiator and the first radiator are coupled through a gap, and when the electronic equipment is in different states, the input end of the gating switching circuit is controlled to be selectively conducted with the target radiator with the optimal communication performance. The first feed signal is fed in from the target radiator to support the radio frequency signal transmission of the first frequency band so as to ensure the communication quality of the first frequency band, and the second frequency band is supported by multiplexing the second radiator, so that the miniaturization design is realized and the communication quality of the second frequency band is improved.

Description

Technical Field

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

[0002] With the development of communication technology, electronic devices can communicate on multiple frequency bands, but multi-band communication is mostly achieved through multi-antenna settings, which is inconsistent with the development trend of miniaturization of electronic devices, and the communication performance of a certain frequency band may be poor when the electronic device is in different states. Summary of the invention

[0003] Based on this, it is necessary to provide an antenna module and electronic device that can support multi-band communications and take into account both miniaturized design and stability of first-band communications.

[0004] In a first aspect, an antenna module is provided, which is applied to an electronic device, and the antenna module includes:

[0005] A first radiator having a first end and a second end, and a first feeding point located between the first end and the second end;

[0006] a second radiator, wherein a first end of the second radiator is opposite to and spaced from the first end of the first radiator, the second radiator and the first radiator are coupled via a gap, and the second radiator has a second feeding point;

[0007] A first feed source, used for providing a first feed signal for exciting a first frequency band;

[0008] A second feed source is connected to the first feed point and is used to provide a second feed signal to excite at least part of the first radiator and the second radiator to jointly support a second frequency band, where the second frequency band is different from the first frequency band;

[0009] A gating switching circuit, wherein multiple output ends of the gating switching circuit are respectively connected to the first feeding point and the second feeding point, and the input end of the gating switching circuit is connected to the first feed source. The gating switching circuit is used to select and conduct the first feed source and the target radiator to at least stimulate the target radiator to support the first frequency band. The target radiator is the radiator with the best communication performance in the first frequency band among the first radiator and the second radiator when the electronic device is in different states.

[0010] In a second aspect, an electronic device is provided, comprising the antenna module as described above.

[0011] The above-mentioned antenna module and electronic device can use the selection switching circuit to switch the conduction state when the electronic device is in different states, so as to always ensure that the radiator with the best communication performance is connected to the first feed signal to support the RF signal transmission of the first frequency band, thereby ensuring the communication quality of the first frequency band, and supporting the second frequency band by multiplexing the second radiator, which is conducive to achieving miniaturized design and improving the communication quality of the second frequency band. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the conventional technology, the drawings required for use in the embodiments or the conventional technology descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0013] Figure 1 This is one of the structural schematic diagrams of an antenna module according to an embodiment;

[0014] Figure 2 This is a second structural schematic diagram of an antenna module according to an embodiment;

[0015] Figure 3 for Figure 2 Under the structure, when the first feeding signal is fed from the first feeding point, the radiation pattern in the first frequency band;

[0016] Figure 4 for Figure 2 Under the structure, when the first feeding signal is fed from the second feeding point, the radiation pattern in the first frequency band;

[0017] Figure 5 This is a third structural diagram of an antenna module according to an embodiment;

[0018] Figure 6 This is a fourth structural diagram of an antenna module according to an embodiment;

[0019] Figure 7 is a current distribution diagram when a first feeding signal is fed from a first feeding point in an embodiment;

[0020] Figure 8 Schematic diagram of an S curve of a first feeding point and an S curve of a second feeding point under current distribution as shown in 7 in one embodiment;

[0021] Fig. 9 is a current distribution diagram when a first feeding signal is fed from a second feeding point in an embodiment;

[0022] Fig.10 FIG. 4 is a schematic structural diagram of an electronic device according to an embodiment. DETAILED DESCRIPTION

[0023] In order to facilitate understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. Embodiments of the present application are provided in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0025] It is understood that the terms "first", "second", etc. used in this application may be used herein to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish a first element from another element. For example, without departing from the scope of this application, a first resistor may be referred to as a second resistor, and similarly, a second resistor may be referred to as a first resistor. Both the first resistor and the second resistor are resistors, but they are not the same resistor.

[0026] It can be understood that the “connection” in the following embodiments should be understood as “electrical connection”, “communication connection”, etc. if the connected circuits, modules, units, etc. have electrical signals or data transmission between each other.

[0027] It can be understood that “at least one” means one or more, “plurality” means two or more, and “at least a portion of an element” means a part or all of an element.

[0028] When used herein, the singular forms "a", "an", and "said / the" may also include plural forms, unless the context clearly indicates otherwise. It should also be understood that the terms "include / comprise" or "have" and the like specify the presence of stated features, wholes, steps, operations, components, parts, or combinations thereof, but do not exclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts, or combinations thereof. At the same time, the term "and / or" used in this specification includes any and all combinations of the relevant listed items.

[0029] The antenna module and radio frequency system involved in the embodiments of the present application can be applied to communication devices with wireless communication functions, and the communication devices can be handheld devices, vehicle-mounted devices, wearable devices, computing devices, or other processing devices connected to a wireless modem, as well as various forms of user equipment (UE) (e.g., mobile phones), mobile stations (MS), etc. For the convenience of description, the above-mentioned devices are collectively referred to as communication devices.

[0030] In one embodiment, Figure 1 As shown, the present application provides an antenna module, which is applied to electronic equipment. The antenna module includes: a first radiator 10, a second radiator 20, a first feed source S1, a second feed source S2, and a gating switching circuit 30.

[0031] The first radiator 10 has a first end and a second end, and a first feeding point K1 between the first end and the second end. The first end and the second end of the first radiator 10 may both be free ends, and the first feeding point K1 may be any point between the first end and the second end.

[0032] The first end of the second radiator 20 is opposite to the first end of the first radiator 10 and is spaced apart. The second radiator 20 and the first radiator 10 are coupled through a gap, and the second radiator 20 has a second feeding point K2. The first feed source S1 is used to provide a first feeding signal to excite the first frequency band. The second feed source S2 is connected to the first feeding point K1 and is used to provide a second feeding signal to excite the first radiator 10 and at least part of the second radiator 20 to jointly support a second frequency band, and the second frequency band is different from the first frequency band.

[0033] The first feed source S1 and the second feed source S2 refer to devices that can provide feed signals, which can be independently set or implemented on processing circuits such as communication chips. The second feed signal is connected to the first radiator 10 through the first feed point K1, and after being transmitted through the first radiator 10, it is transmitted to the first end of the second radiator 20 through slot coupling, and is transmitted on the second radiator 20. It can be transmitted to the rear feed ground of the second feed point K2, or to the second end of the second radiator 20, or to other grounding points D on the second feed point K2, that is, the first radiator 10 and at least part of the second radiator 20 can jointly support communication in the second frequency band.

[0034] The multiple output ends of the selection switching circuit 30 are respectively connected to the first feeding point K1 and the second feeding point K2, and the input end of the selection switching circuit 30 is connected to the first feed source S1. The selection switching circuit 30 selects to turn on the first feed source S1 and the target radiator to stimulate at least the target radiator to support the first frequency band. The target radiator is the radiator with the best communication performance in the first frequency band among the first radiator 10 and the second radiator 20 when the electronic device is in different states.

[0035] When the target radiator is the first radiator 10, the input end of the selection switching circuit 30 is selectively connected to the first feeding point K1 (i.e., the first feed source S1 and the first radiator 10 are selectively connected). At this time, the first feed signal is connected to the first radiator 10 via the first feeding point K1 and transmitted on the first radiator 10. Based on the slot coupling, the first feed signal continues to be transmitted between the second end of the second radiator 20 and the second feeding point K2 to support the transmission of the RF signal in the first frequency band. At the same time, as described above, the second feed signal provided by the second feed source S2 is transmitted on the first radiator 10 and the second radiator 20 after passing through the first feeding point K1, so that the first radiator 10 and the second radiator 20 jointly support the transmission of the RF signal in the second frequency band, which is conducive to taking into account the miniaturization design and ensuring the communication quality of multiple frequency bands.

[0036] When the target radiator is the second radiator 20, the input end of the selection switching circuit 30 is selectively turned on with the second feeding point K2 (i.e., the first feed source S1 and the second radiator 20 are selectively turned on). At this time, the first feed signal is connected to the second radiator 20 via the second feeding point K2 and transmitted on the second radiator 20, so that the second radiator 20 supports the transmission of RF signals in the first frequency band. For example, the second radiator 20 operates in a resonant mode under the current distribution from the second feeding point to its second end. At the same time, since the first frequency band and the second frequency band are different, the second radiator 20 can still support the transmission of RF signals in the second frequency band together with the first radiator 10 without interfering with each other. Based on this, it can be known that the antenna module provided in the embodiment of the present application can control the conduction state of the selection switching circuit 30 when the electronic device is in different states, so as to ensure that the radiator with the best communication performance is always connected to the first feed signal to support the RF signal transmission of the first frequency band to ensure the communication quality of the first frequency band, and support the second frequency band by multiplexing the second radiator 20, which is conducive to achieving miniaturized design and improving the communication quality of the second frequency band.

[0037] In one embodiment, the selection of the first frequency band and the second frequency band may be based on the communication requirements in a specific scenario. The first frequency band and the second frequency band may be communication frequency bands under a variety of network standards, for example, communication frequency bands of 2G (Second Generation Mobile Communication Technology), 3G (3rd Generation Mobile Communication Technology), 4G (Fourth Generation Mobile Communication Technology), 5G (5th Generation Mobile Communication Technology), 6G (sixth Generation Mobile Communication Technology), WiFi (Wireless Fidelity), GPS (Global Positioning System), Bluetooth, etc.

[0038] In one embodiment, the first frequency band may be a WiFi (Wireless Fidelity) frequency band. For example, it may include WiFi 2.4G, Wi-Fi 5G, and Wi-Fi 6G. The antenna module provided in the above embodiment supports WiFi signal transmission by selecting and switching the first feed source S1 to access the radiator with the best WiFi communication performance when the electronic device is in different states, which is beneficial to improving WiFi communication performance.

[0039] In one embodiment, the first feeding point K1 may be arranged near the second end of the first radiator 10. After the second feeding signal provided by the second feed source S2 is connected from the first feeding point K1, it may be transmitted through the first radiator 10 in the direction of the second radiator 20, and based on the slot coupling, it may be transmitted to the second radiator 20. Since the first feeding point K1 is arranged near the second end of the first radiator 10, the length of the first radiator 10 may be fully utilized to support the second frequency band communication, increase the effective electrical length, and be beneficial to improve the communication performance of the second frequency band such as the low frequency band and the medium frequency band, and cooperate with the multiplexed second radiator 20 to further realize the miniaturized design.

[0040] In one embodiment, Figure 2 As shown, the antenna module further includes: a processing circuit 40. The processing circuit 40 is used to control the gating switching circuit 30 to select and conduct the first feed source S1 and the target radiator when the electronic device is in different states.

[0041] In one embodiment, Figure 2 As shown, the antenna module further includes: a metal floor 50. The metal floor 50 is used to provide a ground signal. The metal floor 50 and the radiator in the embodiment of the present application are used to jointly support communications in different resonance modes.

[0042] Among them, the first radiator 10 is used to couple with the metal floor 50 under the excitation of the first feed source S1 or the second feed source S2, and the second radiator 20 is used to couple with the metal floor 50 under the excitation of the first feed source S1, and the main radiation direction of the first radiator 10 under the excitation of the first feed source S1 is different from the main radiation direction of the second radiator 20 under the excitation of the first feed source S1.

[0043] By coupling with the metal floor 50, the metal floor 50 acts together on the transmission of the feeding signal to form the radiation in different directions of the first radiator 10 and the second radiator 20. When the main radiation directions are different, especially when the main radiation directions are completely complementary, the electronic device can determine a radiator with the best radiation performance to support the first frequency band in different states, thereby ensuring the communication quality of the first frequency band in any state, and at the same time not affecting the communication performance of the second frequency band.

[0044] For example, Figure 2 In the structure shown, when the first feed source S1 is connected from the first radiator 10 (the target radiator is the first radiator 10), the first radiator 10 and the second radiator 20 part between the first end and the second feeding point K2 mainly support the transmission of the RF signal in the first frequency band. The first radiator 10 and the second radiator 20 are coupled with the metal floor 50 under the excitation of the first feed source S1, and the radiation pattern thereof is as shown in FIG. Figure 3 When the first feed source S1 is connected to the second radiator 20 (the target radiator is the second radiator 20), the radiator portion between the second feeding point K2 of the second radiator 20 and the second end of the second radiator 20 mainly supports the transmission of RF signals in the first frequency band. The second radiator 20 is coupled with the metal floor 50 under the excitation of the first feed source S1, and its radiation pattern in the first frequency band is as shown in FIG. Figure 4 As shown, it can be seen that in the two cases, the main radiation directions of the first radiator 10 and the second radiator 20 in the first frequency band are different, such as Figure 1 Under this setting, the radiation directions of the two can achieve omnidirectional complementarity. Based on this, when the electronic device is in any state, it can be ensured that when the first feeding signal is connected through the target radiator, the RF signal of the first frequency band can be transmitted with high radiation efficiency, thereby ensuring the communication reliability and stability of the first frequency band.

[0045] In one embodiment, Figure 5 , Figure 6As shown, the antenna module further includes: a third feed source S3. The third feed source S3 is a device for providing a third feeding signal.

[0046] The third feed source S3 is connected to the second feed point K2, and the third feed signal provided by the third feed source S3 is used to excite the second radiator 20 to support the third frequency band, and the third frequency band is different from the first frequency band and the second frequency band. Similar to the first frequency band and the second frequency band, the third frequency band can also be a communication frequency band under multiple network standards. For example, the third frequency band can be a 5G frequency band, such as N77, N78, N79 and other frequency bands.

[0047] Based on the setting of the second feeding point K2, a third feed source S3 can also be set to reuse the second radiator 20 to support RF signal transmission in the third frequency band. In view of the fact that the third frequency band, the second frequency band and the first frequency band are all different, when the selection switching circuit 30 switches the access point of the first feed source S1, it will not affect the communication performance of the third frequency band, and when the second radiator 20 is used to support the RF signal transmission in the second frequency band, it will not affect the communication in the third frequency band, which is conducive to realizing product miniaturization design while meeting multi-band communication.

[0048] In one embodiment, Figure 5 , Figure 6 As shown, the antenna module further includes: a first switch 60 .

[0049] The first end of the first switch 60 is respectively connected to an output end of the selection switching circuit 30 (the output end connected to the second radiator 20 in the above embodiment) and the third feed source S3, and the second end of the first switch 60 is connected to the second feeding point K2. When the first switch 60 is turned on, it is allowed to feed power to the first switch 60 through the second feeding point K2. When the first switch 60 is turned off, the feeding signal on the second radiator 20 cannot be transmitted to the direction of the first switch 60 through the second feeding point K2. At this time, the feeding signal on the second radiator 20 is transmitted to the second end of the second radiator 20. The first switch 60 is used to be equivalently disconnected at the resonant frequency corresponding to the second frequency band when the input end of the selection switching circuit 30 and the first radiator 10 are selectively turned on, so that the second feeding signal excites the first radiator 10 and the second radiator 20 to jointly support the second frequency band.

[0050] In one embodiment, the processing circuit 40 is connected to the first switch 60, and the processing circuit 40 is also used to control the first switch 60 to be disconnected when the input end of the selection switching circuit 30 and the first radiator 10 are selectively turned on, so that the second feed signal excites the first radiator 10 and the second radiator 20 to jointly support the second frequency band.

[0051] When the target radiator is the first radiator 10, the processing circuit 40 controls the first switch 60 to be disconnected so that the second feed signal transmitted from the first radiator 10 is transmitted to the second end of the second radiator 20, which can fully utilize the size of the second radiator 20 and is conducive to miniaturization design.

[0052] In one embodiment, Figure 5 As shown, the second radiator 20 further has a grounding point D, and the grounding point D is arranged farther away from the first radiator 10 than the second feeding point K2. The antenna module also includes: a first matching circuit 70.

[0053] The first matching circuit 70 is connected to the ground point D. The first matching circuit 70 is used to adjust the second radiator 20 to support the resonance mode from the second feeding point K2 to the ground point D to support the first frequency band. When the input end of the selection switching circuit 30 is connected to the second feeding point K2, the first feeding signal is connected to the second radiator 20 through the second feeding point K2, and is transmitted to the ground point D on the second radiator 20, and is transmitted to the first matching circuit 70 through the ground point D. After being tuned by the first matching circuit 70, the second radiator 20 works in a resonant mode in which the feeding current is fed into the second radiator 20 from the second feeding point K2, and is transmitted from the second feeding point K2 to the ground point D on the second radiator 20, and is fed out through the ground point D and the first matching circuit 70, supporting the transmission of RF signals in the first frequency band.

[0054] In one embodiment, Figure 6 As shown, the antenna module further includes: a second switch 80 .

[0055] Among them, the first end of the second switch 80 is connected to the ground point D, and the second end of the second switch 80 is grounded GND. The second switch 80 is used to operate at the resonant frequency corresponding to the first frequency band when the input end of the selection switching circuit 30 and the second radiator 20 are selected to be turned on, so that the first matching circuit 70 adjusts the second radiator 20 to support the first frequency band.

[0056] In one embodiment, the processing circuit 40 can be connected to the second switch 80. The processing circuit 40 is used to control the second switch 80 to be equivalently turned on at the resonant frequency corresponding to the first frequency band when the input end of the selection switching circuit 30 and the second radiator 20 are selected to be turned on, so that the first matching circuit 70 adjusts the second radiator 20 to support the first frequency band.

[0057] When the target radiator is the second radiator 20, the processing circuit 40 controls the second switch 80 to be equivalently turned on at the resonant frequency corresponding to the first frequency band, and the first feed signal is fed into the second radiator 20 through the second feeding point K2, transmitted to the grounding point D on the second radiator 20, transmitted to the second switch 80 after the grounding point D, and transmitted to the first matching circuit 70 through the second switch 80, thereby realizing the access of the first matching circuit 70. Under the tuning of the first matching circuit 70, the second radiator 20 supports the transmission of RF signals in the first frequency band.

[0058] In one embodiment, Figure 6 As shown, the antenna module may include the above-mentioned first switch 60 and second switch 80. When the gating switching circuit 30 selects to turn on the first feed source S1 and the second radiator 20, both the first switch 60 and the second switch 80 are turned on, so that the first matching circuit 70 adjusts the resonant mode of the second radiator 20 to support the first frequency band. When the gating switching circuit 30 selects to turn on the first feed source S1 and the first radiator 10, the first switch 60 is turned off and the second switch 80 is turned on.

[0059] In one embodiment, the processing circuit 40 is used to control the first switch 60 and the second switch 80 to be turned on when the input end of the selection switching circuit 30 is selectively turned on with the second radiator 20, so that the first matching circuit 70 adjusts the resonant mode of the second radiator 20 to support the first frequency band.

[0060] In one embodiment, the processing circuit 40 is also used to control the first switch 60 to be disconnected and the second switch 80 to be turned on when the input end of the selection switching circuit 30 and the first radiator 10 are selectively turned on, in a resonant mode, and the second feed signal in the resonant mode is distributed from the first feed point K1 to the first end of the first radiator 10, and from the first end of the second radiator 20 to the grounding point D of the second radiator 20. In this resonant mode, a larger electrical length can be provided for the second feed signal. For example, taking the second frequency band as the intermediate frequency as an example, under the setting of the radiator of the same size, the RF module provided in the embodiment of the present application is conducive to improving the intermediate frequency performance. Under the same performance, the RF module provided in the embodiment of the present application is conducive to realizing a miniaturized design.

[0061] In one embodiment, Figure 6 As shown, the antenna module also includes: a second matching circuit 90.

[0062] Among them, the first end of the second matching circuit 90 is connected to the first feeding point K1, and the second end of the second matching circuit 90 is respectively connected to the second feed source S2 and the output end of the selection switching circuit 30 connected to the first feeding point K1, and the second matching circuit 90 is used to adjust the first radiator 10 to support the first frequency band and the second frequency band.

[0063] By connecting a second matching circuit 90 in series on the link of the signal accessed from the first feeding point K1, the tuning capability of the second matching circuit 90 can effectively improve the communication performance when the first feed source S1 is accessed from the first feeding point K1 and when the second feed source S2 is accessed from the first feeding point K1.

[0064] The matching circuit in each embodiment of the present application may include a gating switch and at least one tuning unit with different tuning parameters, and any tuning unit is selected by the gating switch so that the matching circuit operates in different resonant frequency bands. The tuning unit may include a combination of one or more of a capacitor, an inductor, and a resistor.

[0065] In one embodiment, the first frequency band includes a WiFi 2.4 GHz frequency band, and the second frequency band includes at least one of a B1 frequency band and a B3 frequency band.

[0066] Taking the third frequency band N78 as an example, Figure 5 In the structure shown, when the target radiator is the first radiator 10, the gating switching circuit 30 is switched to be connected to the first feeding point K1. At this time, the current distribution of the WiFi 2.4 GHz frequency point is as follows: Figure 7 As shown, the WiFi signal is mainly radiated by the parasitic branch from the first radiator 10 and the second feeding point K2 to the first end on the right side of the second radiator 20. The energy of this working mode is mainly radiated to the right side ( Figure 3 ). At this time, the S11 curve of the first feeding point K1 is as follows Figure 8 As shown in Q1, it can be seen that the first radiator 10 can support the RF signal transmission of LTE mid-band B3 and B1, and WiFi 2.4G, and the S11 curve of the second feeding point K2 is shown in Q2, which can support WiFi 2.4G and NR N78 band. Since the WiFi signal is fed to the first feeding point K1 at this time, the WiFi signal mainly relies on Figure 7 radiates in current mode.

[0067] When the target radiator is the second radiator 20, the switching circuit 30 is switched to the second feeding point K2. At this time, the WiFi signal is fed to the second radiator 20 corresponding to the second feeding point K2. At this time, the current at the 2.4 GHz frequency point is as follows: Fig. 9 As shown, this mode is mainly a 1 / 4 wavelength mode from the second feeding point K2 to the left slot end, and the energy is mainly radiated toward the left side ( Figure 4 ), which is complementary to the radiation pattern when the target radiator is the first radiator 10. Since only the signal path of the WiFi band is adjusted, other bands are not affected. Therefore, LTE B3 and B1 bands, as well as N78 band, can also be supported in this state.

[0068] In one embodiment, the processing circuit 40 is further configured to obtain communication performance parameters of the electronic device in different states, and determine the target radiator according to the communication performance parameters.

[0069] When the communication environment of the electronic device changes, the posture and shape of the electronic device changes, the relative position of the electronic device and the human body changes, etc., the radiation performance of the radiator in the RF module on it will be affected. Based on this, the target radiator can be determined according to the distribution of the RF signal in the first frequency band of the electronic device in different states. Based on the determination of the target radiator, the state of the selection switching circuit 30 is automatically switched to access the first feed signal from the first feeding point K1 or the second feeding point K2, and the radiator with the best communication performance can be switched to transmit the RF signal in the first frequency band to ensure the communication quality of the first frequency band. In such a case, Figure 2 In the illustrated architecture, when the first feeding signal is connected from the first feeding point K1 and when it is connected from the second feeding point K2, the radiation directions in the first frequency band are complementary, thereby avoiding communication interruption due to the zero point of the directional pattern.

[0070] The processing circuit 40 can control the gating switching circuit 30 to select and conduct the first feed source S1 and the target radiator according to the determined target radiator to ensure the communication performance of the first frequency band. For details, please refer to the description in the above embodiment, which will not be repeated here.

[0071] In one embodiment, the gating switching circuit 30 includes: a single-pole double-throw switch. The input end of the single-pole double-throw switch is connected to the first feed source S1, and the multiple output ends of the single-pole double-throw switch are respectively connected to the first feed point K1 and the second feed point K2, and the single-pole double-throw switch is used to select the first feed source S1 and the target radiator. Optionally, the controlled end of the single-pole double-throw switch can be connected to the processing circuit 40, and is used to select the first feed source S1 and the target radiator under the control of the processing circuit 40.

[0072] Of course, in addition to using a single-pole double-throw switch, the gate switching circuit 30 can use other types of switches to achieve the same switching effect.

[0073] The size of the radiator and the positions of the feeding point and the grounding point D in the embodiment of the present application can be adjusted and can be selected according to the first frequency band, the second frequency band and the third frequency band to be supported.

[0074] In one embodiment, an electronic device is provided, the electronic device comprising the above-mentioned antenna module. The electronic device equipped with the above-mentioned antenna module can ensure the communication performance in the first frequency band under different conditions, and can take into account the communication performance in the second frequency band and the third frequency band. In addition, by multiplexing the second radiator 20 to support the transmission of radio frequency signals in the first frequency band and the second frequency band, it is conducive to realizing miniaturized design.

[0075] In one embodiment, the metal floor 50 is at least part of a middle plate or a circuit board (not shown) in an electronic device. The circuit board can be a PCB (Printed Circuit Board) that can provide a ground in an electronic device, which can be independently arranged outside the middle plate or on the middle plate. Based on the introduction of the antenna module in the above embodiment, it can be known that the electronic device equipped with the above antenna module can ensure the communication performance of the first frequency band under different conditions, while taking into account the communication effects of the second and third frequency bands. For example, when the radio frequency signal of the first frequency band is a WiFi signal, the WiFi communication quality under different conditions can be guaranteed to avoid communication interruption caused by the zero point of the directional diagram, and at the same time, the communication quality of other frequency bands such as B1, B2, and N78 can be maintained.

[0076] In one embodiment, the electronic device further includes a middle frame, the middle frame includes a middle plate and a frame, and the frame includes a top frame, a first side frame, a bottom frame, and a second side frame which are arranged in sequence.

[0077] The first radiator 10 and the second radiator 20 can be arranged on the top frame of the electronic device. When the user holds the electronic device vertically with his left hand, there is more shielding in the left radiation direction. At this time, the processing circuit 40 can control the input end of the selection switching circuit 30 to select the connection with the first feeding point K1. At this time, the first feeding signal is connected to the first radiator 10 through the first feeding point K1, and is mainly radiated from the first end of the first radiator 10 and the second radiator 20 to the parasitic branch of the second feeding point K2. The energy of this working mode is mainly radiated to the right, which can avoid poor communication in the first frequency band caused by hand shielding.

[0078] Similarly, when the user holds the electronic device vertically with his right hand, there is more obstruction in the rightward radiation direction. At this time, the processing circuit 40 can control the input end of the selection switching circuit 30 and the second feeding point K2 to be selectively connected. At this time, the first feed signal is connected to the second radiator 20 through the second feeding point K2, and is mainly radiated from the second feeding point K2 on the second radiator 20 to the branch at its second end. The energy in this working mode is mainly radiated toward the left side, which can avoid poor communication in the first frequency band caused by hand obstruction.

[0079] In one embodiment, the first radiator 10 and the second radiator 20 can also be arranged on the first side frame and the second side frame of the electronic device, and the first radiator 10 is arranged closer to the right side of the electronic device than the second radiator 20 (the right side can be arranged as shown in the figure). Figure 3 and Figure 4(understood from the perspective shown, if the electronic device is flipped left and right, the understanding of "left" and "right" should be adaptively adjusted). When the user holds the electronic device in landscape mode with his left hand, the processing circuit 40 can control the input end of the selection switching circuit 30 to select the connection with the first feeding point K1, and the first feeding signal is connected to the first radiator 10 through the first feeding point K1, and is mainly radiated by the parasitic branches from the first end of the first radiator 10 and the second radiator 20 to the second feeding point K2. The energy of this working mode is mainly radiated to the right, which can avoid poor communication in the first frequency band caused by hand occlusion.

[0080] Similarly, when the user holds the electronic device in landscape orientation with his right hand, the processing circuit 40 can control the input end of the selection switching circuit 30 and the second feeding point K2 to be selectively connected, so that the first feeding signal is connected to the second radiator 20 through the second feeding point K2, and is mainly radiated from the second feeding point K2 on the second radiator 20 to the branch at its second end. The energy in this working mode is mainly radiated toward the left side, which can avoid poor communication in the first frequency band caused by occlusion of the right hand.

[0081] The electronic device equipped with the above-mentioned antenna module has complementary radiation directions based on the two cases where the first feed source S1 is accessed from the first feeding point K1 and the second feeding point K2. The communication quality of the first frequency band can be guaranteed by adjusting the signal path of the first frequency band. At the same time, it has no effect on the second and third frequency bands. Therefore, in this state, it can also support signal transmission of multiple frequency bands of LTE and 5G, taking into account the communication stability of the first frequency band and multi-band communication.

[0082] In one embodiment, the first frequency band is a WiFi frequency band. The processing circuit 40 can intelligently select a target radiator to access the first feed source S1 by detecting the strength of the WiFi signal of the electronic device in different states, that is, to work in the working mode with the strongest WiFi signal to ensure WiFi communication performance. The processing circuit 40 can detect the strength of the WiFi signal in different states by obtaining RSSI (Received Signal Strength Indication) and radiation distribution information.

[0083] like Fig.10 As shown, further, the electronic device is taken as a mobile phone 100 as an example for description, specifically, as Fig.10 As shown, the mobile phone 100 may include a memory 101 (which may optionally include one or more computer-readable storage media), a processing circuit 40, a peripheral device interface 103, a radio frequency system 104, and an input / output (I / O) subsystem 106. These components may communicate via one or more communication buses or signal lines 109. Those skilled in the art will appreciate that Fig.10The illustrated mobile phone 100 does not constitute a limitation of the mobile phone, and may include more or less components than shown, or combine certain components, or arrange the components differently. Fig.10 The various components shown in the EMBODIMENTS 2000 are implemented in hardware, software, or a combination of hardware and software, including one or more signal processing and / or application specific integrated circuits.

[0084] The memory 101 optionally includes a high-speed random access memory, and optionally also includes a non-volatile memory, such as one or more disk storage devices, flash memory devices, or other non-volatile solid-state memory devices. Exemplarily, the software components stored in the memory 101 include an operating system 1011, a communication module (or an instruction set) 1012, a global positioning system (GPS) module (or an instruction set) 1013, etc.

[0085] The processing circuit 40 and other control circuits (such as the control circuit in the radio frequency system 104) can be used to control the operation of the mobile phone 100. The processing circuit 40 may include one or more microprocessors, microcontrollers, digital signal processors, baseband processors, power management units, audio codec chips, application-specific integrated circuits, etc.

[0086] The processing circuit 40 may be configured to implement a control algorithm for controlling the use of an antenna in the mobile phone 100. The processing circuit 40 may also issue control commands for controlling switches, tuning circuits, etc. in the radio frequency system 104.

[0087] I / O subsystem 106 couples input / output peripherals on mobile phone 100, such as keypads and other input control devices, to peripheral device interface 103. I / O subsystem 106 optionally includes a touch screen, buttons, tone generators, accelerometers (motion sensors), ambient light sensors and other sensors, light emitting diodes and other status indicators, data ports, etc. Exemplarily, a user can control the operation of mobile phone 100 by supplying commands via I / O subsystem 106, and can use the output resources of I / O subsystem 106 to receive status information and other output from mobile phone 100. For example, a user can press button 1061 to turn on or off the mobile phone.

[0088] The radio frequency system 104 may include the antenna device in any of the aforementioned embodiments.

[0089] Optionally, the communication control unit may be the processing circuit 40 mentioned above.

[0090] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0091] The above embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

Claims

1. An antenna module, It is characterized in that Applied to electronic equipment, the antenna module comprises: A first radiator having a first end and a second end, and a first feeding point located between the first end and the second end; a second radiator, wherein a first end of the second radiator is opposite to and spaced from the first end of the first radiator, the second radiator and the first radiator are coupled via a gap, and the second radiator has a second feeding point; A first feed source, used for providing a first feed signal for exciting a first frequency band; A second feed source, connected to the first feed point, for providing a second feed signal to excite at least part of the first radiator and the second radiator to jointly support a second frequency band, where the second frequency band is different from the first frequency band; A gating switching circuit, wherein the multiple output ends of the gating switching circuit are respectively connected to the first feeding point and the second feeding point, and the input end of the gating switching circuit is connected to the first feed source. The gating switching circuit is used to selectively conduct the first feed source and the target radiator to at least stimulate the target radiator to support the first frequency band. The target radiator is the radiator with the best communication performance in the first frequency band between the first radiator and the second radiator when the electronic device is in different states.

2. The antenna module according to claim 1, It is characterized in that The antenna module also includes: Metal flooring; The first radiator is used to couple with the metal floor under the excitation of the first feed source or the second feed source, and the second radiator is used to couple with the metal floor under the excitation of the first feed source, and the main radiation direction of the first radiator under the excitation of the first feed source is different from the main radiation direction of the second radiator under the excitation of the first feed source.

3. The antenna module according to claim 1, It is characterized in that The antenna module also includes: A third feed source is connected to the second feeding point and is used to provide a third feeding signal to excite the second radiator to support a third frequency band, and the third frequency band is different from the first frequency band and the second frequency band.

4. The antenna module according to claim 3, It is characterized in that The antenna module also includes: A first switch, wherein a first end of the first switch is respectively connected to an output end of the selection switching circuit and the third feed source, and a second end of the first switch is connected to the second feeding point. The first switch is used for being equivalently disconnected at a resonant frequency point corresponding to the second frequency band when an input end of the selection switching circuit and the first radiator are selectively turned on, so that the second feed signal excites the first radiator and the second radiator to jointly support the second frequency band.

5. The antenna module according to claim 1, It is characterized in that The second radiator further has a grounding point, and the grounding point is arranged farther away from the first radiator than the second feeding point. The antenna module further includes: A first matching circuit is connected to the ground point, and the first matching circuit is used to adjust the second radiator to support a resonant mode from the second feeding point to the ground point to support the first frequency band.

6. The antenna module according to claim 5, It is characterized in that The antenna module also includes: A second switch, wherein a first end of the second switch is connected to the ground point, and a second end of the second switch is grounded. The second switch is used to operate at a resonant frequency corresponding to the first frequency band when the input end of the selection switching circuit and the second radiator are selectively turned on, so that the first matching circuit adjusts the second radiator to support the first frequency band.

7. The antenna module according to claim 1, It is characterized in that The antenna module also includes: A second matching circuit, wherein the first end of the second matching circuit is connected to the first feeding point, the second end of the second matching circuit is respectively connected to the second feed source and the output end of the selection switching circuit connected to the first feeding point, and the second matching circuit is used to adjust the first radiator to support the first frequency band and the second frequency band.

8. The antenna module according to claim 1, It is characterized in that The first frequency band includes a WiFi frequency band, and / or the second frequency band includes an LTE medium frequency band.

9. The antenna module according to claim 8, It is characterized in that The first frequency band includes a WiFi 2.4 GHz frequency band, and the second frequency band includes at least one of a B1 frequency band and a B3 frequency band.

10. The antenna module according to claim 1, It is characterized in that The antenna module also includes: A processing circuit is connected to the gating switching circuit, and the processing circuit is also used to obtain communication performance parameters of the electronic device in different states, determine the target radiator according to the communication performance parameters, and control the gating switching circuit to select and conduct the first feed source and the target radiator.

11. The antenna module according to claim 1, It is characterized in that The gating switching circuit comprises: A single-pole double-throw switch, wherein the input end of the single-pole double-throw switch is connected to the first feed source, and the multiple output ends of the single-pole double-throw switch are respectively connected to the first feeding point and the second feeding point, and the single-pole double-throw switch is used to select and conduct the first feed source and the target radiator.

12. An electronic device, It is characterized in that The electronic device comprises the antenna module as described in any one of claims 1-11.

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