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 floor, and an equal power divider, an excitation source and at least two antenna units which are arranged on the floor, the excitation source is connected with the input end of the equal power divider and is used for providing total excitation current for the equal power divider; the at least two antenna units are at least arranged on the two sides of the floor, and at least two output ends of the equal power divider are connected with feeding points of the at least two antenna units in a one-to-one correspondence mode and used for equally dividing the total excitation current into at least two paths of antenna excitation currents. And the current is fed into the feeding point of the antenna unit through the at least two output ends so as to excite the floor to generate floor excitation current.

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 mobile terminal technology, people have higher and higher requirements for the performance of mobile terminals. The antenna module is one of the indispensable components of mobile terminals, and its performance and bandwidth are also of concern. At present, the RF circuit of the antenna module usually adopts a single-channel direct feeding technical solution: the antenna module usually includes an antenna, and an excitation current is fed into the feeding point of the antenna to excite the antenna to resonate at the working frequency for communication. However, the single-channel direct feeding antenna module solution has a limited antenna bandwidth and is difficult to apply to communication systems with high antenna bandwidth requirements. 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 limited bandwidth of the current antenna module.

[0004] In a first aspect, an embodiment of the present application provides an antenna module, the antenna module comprising: a floor, and an equal power divider, an excitation source, and at least two antenna units arranged on the floor;

[0005] The excitation source is connected to the input end of the equal power divider, and is used to provide a total excitation current to the equal power divider;

[0006] The at least two antenna units are at least arranged on both sides of the floor, and the at least two output ends of the equal power divider are connected to the feeding points of the at least two antenna units in a one-to-one correspondence, so as to equally divide the total excitation current into at least two antenna excitation currents, and feed the feeding points of the antenna units through the at least two output ends to excite the floor to generate a floor excitation current.

[0007] Optionally, the at least two antenna units are evenly arranged on the floor.

[0008] Optionally, the floor includes a short side and a long side; the at least two antenna units are evenly arranged along the short side; or, the at least two antenna units are evenly arranged along the long side; or, the at least two antenna units include two groups of antenna units, one group of antenna units is evenly arranged along the short side, and the other group of antenna units is evenly arranged along the long side.

[0009] Optionally, the antenna module further includes: at least two matching circuits;

[0010] The at least two matching circuits are connected to the at least two antenna units in a one-to-one correspondence, and are used to adjust the first impedance matching of the antenna units corresponding to the matching circuits, so that each of the antenna units resonates in the same sub-band within the working frequency band of the antenna module under the excitation of the antenna excitation current.

[0011] Optionally, the at least two matching circuits are also used to adjust the second impedance matching of the antenna unit corresponding to the matching circuit, so that each of the antenna units resonates at the same frequency point within the working frequency band under the excitation of the antenna excitation current, and the matching impedance of each matching circuit is equal.

[0012] Optionally, the at least two antenna units are evenly arranged along the first direction of the antenna module;

[0013] The at least two matching circuits are also used to adjust the third impedance matching of the antenna unit corresponding to the matching circuit, so that each of the antenna units resonates at different frequency points within the working frequency band under the excitation of the antenna excitation current, and among the at least two antenna units, the antenna units arranged at both ends resonate at the maximum frequency and the minimum frequency of the working frequency band respectively, and the matching impedance of each matching circuit is not equal.

[0014] Optionally, the difference in resonant frequencies of each two adjacently arranged antenna units is equal.

[0015] Optionally, the equal power divider includes: a discrete equal power divider, a PCB trace equal power divider, a coaxial line equal power divider, a microstrip line equal power divider or a waveguide equal power divider.

[0016] Optionally, the antenna unit includes: an inverted-F antenna, a monopole antenna, a loop antenna, a slit antenna, or a combined antenna.

[0017] In a second aspect, an embodiment of the present application provides an electronic device, comprising the antenna module described in any one of the first aspects.

[0018] In an embodiment of the present application, the antenna module includes: a floor, and an equal power divider, an excitation source and at least two antenna units arranged on the floor. At least two antenna units are arranged on at least two sides of the floor. The equal power divider is used to divide the total excitation current provided by the excitation source into at least two antenna excitation currents, and feed the at least two antenna excitation currents into the feeding points of different antenna units respectively to excite the floor to generate a floor excitation current. In this technical solution, the antenna module includes multiple antenna units, which increases the antenna aperture of the antenna module, improves the antenna bandwidth, reduces the mismatch loss, and improves the overall efficiency of the antenna module. In addition, the excitation source can be connected to multiple feeding points to simultaneously excite the floor through multiple feeding points, thereby generating a larger floor excitation current, improving the floor excitation intensity, and improving the radiation efficiency of the antenna module. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of an electronic device provided by the related technology;

[0020] Figure 2 It is a structural schematic diagram of another electronic device provided by the related technology;

[0021] Figure 3 It is a distribution diagram of floor excitation current provided by the related technology;

[0022] Figure 4 It is a structural schematic diagram of an electronic device provided in an embodiment of the present application;

[0023] Figure 5 is a schematic diagram of the structure of another electronic device provided in an embodiment of the present application;

[0024] Figure 6 is a structural schematic diagram of another electronic device provided in an embodiment of the present application;

[0025] Figure 7 It is a schematic diagram of the distribution of a floor excitation current provided in an embodiment of the present application;

[0026] Figure 8 It is a standing wave schematic diagram provided in an embodiment of the present application;

[0027] Fig. 9 This is a schematic diagram of antenna radiation efficiency provided in an embodiment of the present application;

[0028] Fig.10 This is a schematic diagram of the total efficiency of an antenna provided in an embodiment of the present application;

[0029] Fig.11 is another standing wave schematic diagram provided in an embodiment of the present application;

[0030] Fig.12is another schematic diagram of total antenna efficiency provided in an embodiment of the present application;

[0031] Fig.13 This is another standing wave schematic diagram provided in an embodiment of the present application;

[0032] Fig.14 This is another schematic diagram of total antenna efficiency provided in an embodiment of the present application. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application belong to the scope of protection of this application.

[0034] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0035] 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.

[0036] With the development of mobile terminal technology, people have higher and higher requirements on the performance of mobile terminals. Antenna module is one of the indispensable components of mobile terminals, and its performance and bandwidth are also concerned. At present, the RF circuit of the antenna module usually adopts a single-channel direct feeding technical solution: the antenna module usually includes an antenna, and an excitation current is fed into the feeding point of the antenna to excite the antenna to resonate at the working frequency for communication.

[0037] For example, Figure 1 and Figure 2 As shown, the electronic device 10 includes: a floor 202 and an antenna module 200 disposed on the floor 202. The antenna module 200 includes an antenna unit 201, and the antenna unit 201 is a slot antenna.

[0038] The antenna unit 201 includes a feeding body (i.e., a radiator) and a parasitic radiator. The feeding line between a1 and c1 on the antenna unit 201 constitutes the feeding body of the antenna. The feeding point b1 of the antenna unit 201 is located on the feeding body. The feeding body is grounded at the free end s1 (slot1), and the free end s2 (slot2) is coupled with the parasitic radiator. The feeding line between d1 and e1 at the free end s2 constitutes the parasitic radiator of the antenna. The end of the parasitic radiator away from the free end s2 is grounded.

[0039] The length of the feeding body, that is, the distance between a1 and c1, can be L1. The length of the parasitic radiator, that is, the distance between d1 and e1, can be L2. Therefore, the total length of the antenna unit 201 is L, L=L1+L2. In addition, the length L1 of the feeding body is generally slightly shorter than λ / 4, where λ is the wavelength corresponding to the working frequency band of the antenna unit. The length L2 of the parasitic radiator is generally also slightly shorter than λ / 4, and the length L2 of the parasitic radiator is smaller than the length L1 of the feeding body, so that the differential mode of the entire antenna unit is slightly higher than the common mode.

[0040] Furthermore, the antenna unit 201 is usually disposed on one side of the electronic device 10. Figure 1 As shown, the antenna unit 201 is disposed on the left side of the electronic device 10. Or, for example, Figure 2 As shown, the antenna unit 201 is disposed on the right side of the electronic device 10. The feeding point, layout, and antenna size of the antenna unit disposed on the right side are mirror-symmetrical to those of the antenna unit disposed on the left side. Figure 1 The antenna unit in Figure 2 The antenna units in are the same.

[0041] In this way, Figure 1 Taking the structure of the antenna module 200 shown in FIG. 2 as an example, an excitation current is fed into the feeding point of the antenna unit 201 to excite the floor 202 to generate a floor excitation current. The distribution of the floor excitation current on the floor is shown in FIG. Figure 3 As shown. Figure 3 In the figure, the dark area indicates the presence of floor excitation current, and the darker the color, the stronger the excitation intensity of the floor excitation current. Figure 3 It can be seen that the closer the side of the floor is to the antenna unit 201, the larger the floor excitation current is and the stronger the excitation intensity is. Correspondingly, the farther the side of the floor is from the antenna unit 201, the smaller the floor excitation current is and the weaker the excitation intensity is.

[0042] Therefore, the current single-channel direct-feed antenna module solution not only has the problem of limited antenna bandwidth and is difficult to apply to communication systems with high antenna bandwidth requirements, but also because the single antenna unit is distributed on one side of the electronic device, the excitation intensity to the floor of the electronic device is insufficient, affecting the antenna efficiency.

[0043] Please refer to Figure 4 , which shows a schematic diagram of the structure of an electronic device provided in an embodiment of the present application. Optionally, the electronic device includes but is not limited to mobile phones, telephones, televisions, tablet computers, personal computers, laptop computers (Personal Computer, PC), vehicle-mounted equipment, headphones, watches, wearable devices and other devices that can send and receive electromagnetic wave signals. The present embodiment of the application takes the electronic device as an example of a mobile phone, and other devices can refer to the specific description in the embodiment of the present application. Among them, the electronic device may include the antenna assembly 200 provided in the embodiment of the present application. As Figure 4 As shown, the antenna module 200 includes: a floor 202 , and an equal power divider 203 , an excitation source and at least two antenna units 201 arranged on the floor 202 . Figure 4 Take the example that the antenna module 200 includes n antenna units 201 , where n is a positive integer greater than 2.

[0044] The excitation source is connected to the input end of the equal power divider 203. The excitation source is used to provide a total excitation current to the input end of the equal power divider 203. The input end of the equal power divider 203 is also called a radio frequency (RF) end or a common end.

[0045] At least two antenna units 201 are arranged at least on both sides of the floor 202. At least two output ends of the equal power divider 203 are connected to the feeding points of the at least two antenna units 201 in a one-to-one correspondence. The equal power divider 203 is used to equally divide the total excitation current into at least two antenna excitation currents, and feed the feeding points of the antenna units 201 through at least two output ends to excite the floor 202 to generate floor excitation currents. Among them, at least two antenna excitation currents are equal amplitude and in-phase currents. The antenna unit 201 is used to resonate within the working frequency band under the excitation of the antenna excitation current.

[0046] Optionally, the equal power divider 203 can be a discrete equal power divider, a PCB trace equal power divider, a coaxial line equal power divider, a microstrip line equal power divider, or a waveguide equal power divider. Among the PCB trace equal power divider, the coaxial line equal power divider, the microstrip line equal power divider, and the waveguide equal power divider, at least two output paths have the same length and loss. Further optionally, the antenna unit 201 can be an inverted-F antenna (IFA), a monopole antenna, a loop antenna, or a slot antenna.

[0047] It should be noted that the embodiment of the present application is schematically illustrated by taking the antenna module 200 applied to the electronic device 10 as an example. When the antenna module 200 is applied to the electronic device 10, the floor 202 may be the floor of the electronic device 10. It is not limited to the middle frame body of the electronic device 10, the ground in the circuit board, the shielding part of the display screen, and the conductive battery cover. Of course, in other possible situations, the floor 202 may also be a separate ground in the electronic device 10 that is independent of the middle frame body, the ground of the circuit board, the shielding part of the display screen, and the conductive battery cover.

[0048] In an embodiment of the present application, the antenna module includes: a floor, and an equal power divider, an excitation source, and at least two antenna units arranged on the floor. The equal power divider is used to divide the total excitation current provided by the excitation source into at least two antenna excitation currents, and feed the at least two antenna excitation currents into the feeding points of different antenna units respectively to excite the floor to generate a floor excitation current. In this technical solution, the antenna module includes multiple antenna units, which increases the antenna aperture of the antenna module, improves the antenna bandwidth, reduces the mismatch loss, and improves the overall efficiency of the antenna module. In addition, the excitation source can be connected to multiple feeding points to simultaneously excite the floor through multiple feeding points, thereby generating a larger floor excitation current, increasing the floor excitation intensity, and improving the radiation efficiency of the antenna module.

[0049] Optionally, at least two antenna units 201 of the electronic device may be evenly arranged on the floor 202. In an optional case, such as Figure 4 As shown, the floor 202 includes a short side 2021 and a long side 2022. At least two antenna units 201 can be evenly arranged along the short side. For example, the direction of the short side 2021 is the horizontal direction of the electronic device 10, and the direction of the long side 2022 is the longitudinal direction of the electronic device 10. At least two antenna units 201 can be evenly arranged in the longitudinal direction. For example, Figure 4 As shown, the spacing between every two adjacent antenna units 201 can be equal. And the antenna units 201 arranged at both ends can be respectively arranged at the left and right sides of the electronic device.

[0050] In this way, by feeding the antenna excitation current transmitted by the equal power divider into each antenna unit 202, at least two antenna units 202 can excite the floor 202 to generate floor excitation currents of equal amplitude and phase, and the multiple floor excitation currents are symmetrically distributed along the entire floor longitudinally.

[0051] In another optional implementation, Figure 5 As shown, at least two antenna units 201 may be evenly arranged along the long side 2022. At least two antenna units 201 may be evenly arranged in the horizontal direction. Figure 5As shown, the spacing between each two adjacent antenna units 201 can be equal. And the antenna units 201 arranged at both ends can be respectively arranged at the upper and lower sides of the electronic device.

[0052] In this way, by feeding the antenna excitation current transmitted by the equal power divider into each antenna unit 202, at least two antenna units 202 can excite the floor 202 to generate floor excitation currents of equal amplitude and phase, and multiple floor excitation currents are symmetrically distributed laterally along the entire floor.

[0053] In another optional implementation, the at least two antenna units 201 may include two groups of antenna units. One group of antenna units may be evenly arranged along the short side 2021, and the other group of antenna units may be evenly arranged along the long side 2022. In this way, the at least two antenna units 202 excite the floor 202 to generate floor excitation currents of equal amplitude and phase in multiple directions, and some of the multiple floor excitation currents are symmetrically distributed along the entire floor in the transverse direction, and some of the floor excitation currents are symmetrically distributed along the entire floor in the longitudinal direction.

[0054] For example, the antenna module 200 includes two antenna units 201. Figure 6 As shown, the antenna module 200 includes a first antenna unit 201A and a second antenna unit 201B. The equal power divider has two output terminals, which are respectively connected to the feeding point 1 of the first antenna unit 201A and the feeding point 2 of the second antenna unit 201B. The equal power divider divides the total excitation current received from the excitation source into two equal amplitude and same phase antenna excitation currents, which are fed into the first antenna unit 201A and the second antenna unit 201B to excite the floor 202 to generate a floor excitation current. The distribution of the floor excitation current on the floor is shown in FIG. Figure 7 As shown. Figure 7 In the figure, the dark area indicates the presence of floor excitation current, and the darker the color, the stronger the excitation intensity of the floor excitation current. Figure 7 It can be seen that the distribution of floor excitation current on the floor is relatively uniform, and the current excitation of the entire floor is relatively sufficient.

[0055] Obviously, by using an excitation source to simultaneously excite the floor through multiple evenly arranged feeding points, a uniformly distributed floor excitation current can be generated on the floor, the area of ​​the current excitation region on the floor can be increased, the current excitation of the entire floor can be more sufficient, the floor excitation intensity can be further improved, and the radiation efficiency and overall efficiency of the antenna module can be improved.

[0056] Alternatively, if Figure 4 As shown, the antenna module 200 further includes: at least two matching circuits 204. The at least two matching circuits 204 are connected to the at least two antenna units 201 in a one-to-one correspondence. The at least two matching circuits 204 are used to adjust the impedance matching of the antenna units 201 corresponding to the matching circuits 204.

[0057] In an optional case, at least two matching circuits 204 are used to adjust the impedance matching of the antenna unit 201 corresponding to the matching circuit 204 so that each antenna unit 201 resonates in the same sub-band within the working frequency band of the antenna module 200 under the excitation of the antenna excitation current.

[0058] The length of the sub-frequency band is less than the length threshold. At least two matching circuits 204 are used to adjust the impedance matching of the antenna unit 201 so that each antenna unit 201 resonates at a close frequency point in the working frequency band under the excitation of the antenna excitation current.

[0059] For example, at least two matching circuits 204 are also used to adjust the impedance matching of the antenna units corresponding to the matching circuits 204, so that each antenna unit 201 resonates at the same frequency point within the working frequency band under the excitation of the antenna excitation current. In this way, the bandwidth of the antenna module, the antenna radiation efficiency and the overall antenna efficiency can be significantly improved.

[0060] In order to more clearly illustrate the effect of the technical solution of the present application on improving the antenna bandwidth and efficiency, the following takes the working frequency band of the antenna module as B8 as an example, showing Figure 1 , Figure 2 and Figure 6 The standing wave diagram of the antenna module, the schematic diagram of the antenna radiation efficiency and the schematic diagram of the antenna total efficiency are shown.

[0061] Please refer to Figure 8 , which shows a schematic diagram of a standing wave of an antenna module. Figure 8 In the standing wave diagram, the horizontal axis is frequency, in GHz; the vertical axis is return loss, in db. Figure 8 Shows Figure 1 , Figure 2 and Figure 6 The antenna unit of the antenna module shown resonates at the same frequency after adjusting the impedance matching. Figure 1 The standing wave S1,1_B8_same frequency point of the antenna unit of the antenna module shown, Figure 2 The standing wave S2,2_B8_same frequency point of the antenna unit of the antenna module shown, and Figure 6 The antenna module shown in the figure has standing wave S3,3_B8_same frequency point_frequency synthesis_power divider at the RF end. Figure 8 It can be seen that Figure 6The antenna module shown generates a wider standing wave, which can reduce the mismatch loss of the antenna module and improve the antenna efficiency. For example, in the standing wave S1,1_B8_same frequency point, standing wave S2,2_B8_same frequency point and standing wave S3,3_B8_same frequency point_frequency synthesis_power divider, when the return loss is -5db, the standing wave width of the standing wave S3,3_B8_same frequency point_frequency synthesis_power divider is 3-4, which is wider than the standing wave width 1-2 of the standing wave S1,1_B8_same frequency point. Therefore, Figure 6 The antenna module shown has smaller mismatch loss and higher antenna efficiency.

[0062] Please refer to Fig. 9 , which shows a schematic diagram of the radiation efficiency of an antenna module. Fig. 9 In the radiation efficiency diagram, the horizontal axis is frequency, in GHz; the vertical axis is radiation efficiency, in db. Fig. 9 Shows Figure 1 The antenna radiation efficiency System Rad.Efficiency[Ant1_B8]_same frequency point of the antenna module shown Figure 2 The antenna radiation efficiency System Rad.Efficiency[Ant2_B8]_same frequency of the antenna module shown, and Figure 6 The antenna module shown in the figure has the antenna radiation efficiency System Rad.Efficiency[Ant3_B8]_same frequency point_frequency synthesis_power divider at the RF end. Fig. 9 It can be seen that Figure 6 The antenna module shown has higher antenna radiation efficiency in the working frequency band B8. From the perspective of radiation efficiency, the antenna aperture efficiency obtained at the RF port is improved by about 1dB.

[0063] Please refer to Fig.10 , which shows a schematic diagram of the total efficiency of an antenna module. Fig.10 In the total efficiency diagram, the horizontal axis is frequency, in GHz; the vertical axis is total efficiency, in db. Fig.10 Shows Figure 1 The total efficiency of the antenna module shown is System Tot.Efficiency[Ant1_B8]_same frequency point, Figure 2 The total efficiency of the antenna module shown is SystemTot.Efficiency[Ant2_B8]_same frequency, and Figure 6 The total efficiency of the antenna module at the RF end is SystemTot.Efficiency[Ant3_B8]_same frequency point_combiner. Fig.10 It can be seen that Figure 6 The antenna module shown has a higher overall efficiency in the operating frequency band B8. Considering the widening of the bandwidth to reduce the mismatch loss, Figure 6 The overall efficiency of the antenna module shown can be improved by approximately 1.5 dB within the operating frequency band B8.

[0064] right Figure 8 and Fig. 9 The data are summarized in Table 1, which shows Figure 1 The antenna module 1 shown, Figure 2 The antenna module 2 shown, and Figure 6 The radiation efficiency and overall efficiency of the RF end of the antenna module 5 are shown.

[0065] Details are shown in Table 1.

[0066]

[0067] Table 1

[0068] In another optional case, at least two antenna units are evenly arranged along the first direction of the antenna module. At least two matching circuits are also used to adjust the impedance matching of the antenna units corresponding to the matching circuits, so that each antenna unit resonates at different frequencies within the working frequency band under the excitation of the antenna excitation current. And among the at least two antenna units, the antenna units arranged at both ends resonate at the maximum frequency and the minimum frequency of the working frequency band respectively. For example, the first direction can be Figure 4 Alternatively, the first direction may also be Figure 4 The electronic device is shown in portrait orientation.

[0069] Optionally, the frequency difference of the resonance of each two adjacently arranged antenna units is equal. For example, assuming that the operating frequency band of the antenna module is B8 (880-915MHz), it includes three antenna units. The three antenna units are arranged in sequence along the first direction. The resonant frequencies of the three antenna units after impedance matching are 880MHz, 897.5MHz, and 915MHz, respectively. In this way, the bandwidth of the antenna can be increased by about 1 times, and the bandwidth of the antenna module, the antenna radiation efficiency, and the total efficiency of the antenna can be significantly improved.

[0070] In order to more clearly illustrate the effect of the technical solution of the present application on improving the antenna bandwidth and efficiency, the following takes the working frequency band of the antenna module as B8 as an example, showing Figure 1 , Figure 2 and Figure 6 The standing wave diagram of the antenna module, the schematic diagram of the antenna radiation efficiency and the schematic diagram of the antenna total efficiency are shown.

[0071] Please refer to Fig.11 , which shows a schematic diagram of a standing wave of an antenna module. Fig.11 In the standing wave diagram, the horizontal axis is frequency, in GHz; the vertical axis is return loss, in db. Fig.11Shows Figure 1 Antenna module 1, Figure 2 The antenna module 2 and Figure 6 The antenna units of the antenna module 5 shown, when resonating at different frequencies after adjusting the impedance matching, have standing waves S1,1_B8_different frequency points_frequency synthesis of the antenna unit of antenna module 1, standing waves S2,2_B8_different frequency points_frequency synthesis of the antenna unit of antenna module 2, and standing waves S3,3_B8_different frequency points_frequency synthesis_power divider of the antenna module 5 at the RF end. Among them, the operating frequencies of antenna module 1, antenna module 2 and antenna module 5 are [f1, f2]. The frequency f1 corresponding to the deepest point of the standing wave in the standing wave S1,1_B8_different frequency points_frequency synthesis of the antenna unit of antenna module 1. The frequency f2 corresponding to the deepest point of the standing wave in the standing wave diagram S2,2_B8_different frequency points_frequency synthesis of the antenna unit of antenna module 2. By Fig.11 It can be seen that the bandwidth of the standing wave S3,3_B8_different frequency point_frequency synthesis_power divider can be widened by about one time.

[0072] Please refer to Fig.12 , which shows a schematic diagram of the total efficiency of an antenna module. Fig.12 In the total efficiency diagram, the horizontal axis is frequency, in GHz; the vertical axis is total efficiency, in db. Fig.12 The total efficiency of antenna module 1 SystemTot.Efficiency[Ant1_B8], the total efficiency of antenna module 2 System Tot.Efficiency[Ant2_B8], and the total efficiency of antenna module 5 at the RF end System Tot.Efficiency[Ant3_B8]_B8_different frequency point_frequency synthesis are shown. The total efficiency of antenna module 5 at the RF end represents the combined efficiency obtained from the RF port after the standing wave of the antenna unit of antenna module 1 is adjusted to f1, and the standing wave of the antenna unit of antenna module 2 is adjusted to f2, after being combined by the equal power divider. Fig.12 It can be seen that the bandwidth of antenna module 5 is significantly broadened, and its overall efficiency is not much different from that of antenna module 1 or antenna module 2 with a single antenna unit.

[0073] Furthermore, the following Fig.13 , Fig.14 Table 2 and Table 2 further illustrate the performance and efficiency of antenna module 1, antenna module 2 and antenna module 5.

[0074] Please refer to Fig.13 , which shows a schematic diagram of a standing wave of an antenna module. Fig.13 In the standing wave diagram, the horizontal axis is frequency, in GHz; the vertical axis is return loss, in db. Fig.13It shows that when the antenna units of antenna module 2 and antenna module 5 resonate at the same frequency after adjusting impedance matching, and when the antenna unit of antenna module 5 resonates at different frequencies after adjusting impedance matching, the standing wave S2,2_B8_original single antenna of the antenna unit of antenna module 2, the standing wave S3,3_B8_same frequency_frequency synthesis_power divider of the antenna module 5 resonating at the same frequency at the RF end, and the standing wave S3,3_B8_different frequency_frequency synthesis_power divider of the antenna module 5 resonating at different frequencies at the RF end.

[0075] Please refer to Fig.14 , which shows a schematic diagram of the total efficiency of an antenna module. Fig.14 In the total efficiency diagram, the horizontal axis is frequency, in GHz; the vertical axis is total efficiency, in db. Fig.14 The total efficiency SystemTot.Efficiency[Ant1_B8] of antenna module 1, the total efficiency SystemTot.Efficiency[Ant2_B8] of antenna module 2, and the total efficiency SystemTot.Efficiency[Ant3_B8]_same frequency point_combiner of antenna module 5 at the RF end resonating at the same frequency point are shown. The total efficiency SystemTot.Efficiency[Ant3_B8]_B8_different frequency point_frequency synthesis of antenna module 5 at the RF end resonating at different frequencies are shown.

[0076] right Fig.13 and Fig.14 The data are summarized in Table 2, which shows Figure 1 The antenna module 1 shown, Figure 2 The antenna module 2 shown resonates at the same frequency Figure 6 The RF end of the antenna module 5 shown in the figure and the resonance at different frequencies Figure 6 The radiation efficiency and overall efficiency of the RF end of the antenna module 5 are shown.

[0077] Details are shown in Table 2.

[0078]

[0079] Table 2

[0080] Based on this, it is not difficult to see that the antenna module provided in the embodiment of the present application can effectively improve the bandwidth, radiation efficiency and overall efficiency of the antenna.

[0081] In an embodiment of the present application, the antenna module includes: a floor, and an equal power divider, an excitation source, and at least two antenna units arranged on the floor. The equal power divider is used to divide the total excitation current provided by the excitation source into at least two antenna excitation currents, and feed the at least two antenna excitation currents into the feeding points of different antenna units respectively to excite the floor to generate a floor excitation current. In this technical solution, the antenna module includes multiple antenna units, which increases the antenna aperture of the antenna module, improves the antenna bandwidth, reduces the mismatch loss, and improves the overall efficiency of the antenna module. In addition, the excitation source can be connected to multiple feeding points to simultaneously excite the floor through multiple feeding points, thereby generating a larger floor excitation current, increasing the floor excitation intensity, and improving the radiation efficiency of the antenna module.

[0082] The present application also provides an electronic device, which includes the antenna module provided in the present application. Figure 4 , Figure 5 , Figure 6 The electronic device shown. For example, the electronic device 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, a vehicle-mounted electronic device, a mobile Internet device (Mobile Internet Device, MID), an augmented reality (augmentedreality, AR) / virtual reality (virtual reality, VR) device, a robot, a wearable device, an ultra-mobile personal computer (ultra-mobile personal computer, UMPC), a netbook or a personal digital assistant (personaldigital assistant, PDA), etc. It may also be a server, a network attached storage (Network AttachedStorage, NAS), a personal computer (personal computer, PC), a television (television, TV), a teller machine or a self-service machine, etc., which is not specifically limited in the embodiments of the present application.

[0083] In an embodiment of the present application, the antenna module of the electronic device includes: a floor, and an equal power divider, an excitation source and at least two antenna units arranged on the floor. The equal power divider is used to divide the total excitation current provided by the excitation source into at least two antenna excitation currents, and feed the at least two antenna excitation currents into the feeding points of different antenna units respectively to excite the floor to generate a floor excitation current. In this technical solution, the antenna module includes multiple antenna units, which increases the antenna aperture of the antenna module, improves the antenna bandwidth, reduces the mismatch loss, and improves the overall efficiency of the antenna module. In addition, the excitation source can be connected to multiple feeding points to simultaneously excite the floor through multiple feeding points, thereby generating a larger floor excitation current, increasing the floor excitation intensity, and improving the radiation efficiency of the antenna module.

[0084] It should be noted that, in this article, the terms "comprise", "include" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise one..." do not exclude the presence of other identical elements in the process, method, article or device including the element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved, for example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0085] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus a necessary general hardware platform, and of course by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present application, or the part that contributes to the prior art, can be embodied in the form of a computer software product, which is stored in a storage medium (such as ROM / RAM, a disk, or an optical disk), and includes a number of instructions for a terminal (which can be a mobile phone, a computer, a server, or a network device, etc.) to execute the methods described in each embodiment of the present application.

[0086] 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 the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. An antenna module, It is characterized in that The antenna module comprises: a floor, and an equal power divider, an excitation source and at least two antenna units arranged on the floor; The excitation source is connected to the input end of the equal power divider, and is used to provide a total excitation current to the equal power divider; The at least two antenna units are at least arranged on both sides of the floor, and the at least two output ends of the equal power divider are connected to the feeding points of the at least two antenna units in a one-to-one correspondence, so as to equally divide the total excitation current into at least two antenna excitation currents, and feed the feeding points of the antenna units through the at least two output ends to excite the floor to generate a floor excitation current.

2. The antenna module according to claim 1, It is characterized in that The at least two antenna units are evenly arranged on the floor.

3. The antenna module according to claim 2, It is characterized in that The floor includes a short side and a long side; the at least two antenna units are evenly arranged along the short side; or, the at least two antenna units are evenly arranged along the long side; or, the at least two antenna units include two groups of antenna units, one group of antenna units is evenly arranged along the short side, and the other group of antenna units is evenly arranged along the long side.

4. The antenna module according to claim 1, It is characterized in that The antenna module also includes: at least two matching circuits; The at least two matching circuits are connected to the at least two antenna units in a one-to-one correspondence, and are used to adjust the first impedance matching of the antenna units corresponding to the matching circuits, so that each of the antenna units resonates in the same sub-band within the working frequency band of the antenna module under the excitation of the antenna excitation current.

5. The antenna module according to claim 4, It is characterized in that The at least two matching circuits are also used to adjust the second impedance matching of the antenna unit corresponding to the matching circuit, so that each antenna unit resonates at the same frequency point within the working frequency band under the excitation of the antenna excitation current, and the matching impedance of each matching circuit is equal.

6. The antenna module according to claim 4, It is characterized in that The at least two antenna units are evenly arranged along the first direction of the antenna module; The at least two matching circuits are also used to adjust the third impedance matching of the antenna unit corresponding to the matching circuit, so that each of the antenna units resonates at different frequency points within the working frequency band under the excitation of the antenna excitation current, and among the at least two antenna units, the antenna units arranged at both ends resonate at the maximum frequency and the minimum frequency of the working frequency band respectively, and the matching impedance of each matching circuit is not equal.

7. The antenna module according to claim 6, It is characterized in that The difference in resonant frequencies between each two adjacently arranged antenna units is equal.

8. The antenna module according to claim 1, It is characterized in that The equal power divider includes: a discrete equal power divider, a PCB routing equal power divider, a coaxial line equal power divider, a microstrip line equal power divider or a waveguide equal power divider.

9. The antenna module according to claim 1, It is characterized in that The antenna unit includes: an inverted F antenna, a monopole antenna, a loop antenna, a slit antenna, or a combined antenna.

10. An electronic device, It is characterized in that The electronic device comprises the antenna module according to any one of claims 1 to 9.

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