Radio frequency module, inductor combination, communication device, and electronic device

Abstract

The application provides a radio frequency module, an inductor combination, a communication device and an electronic device, and relates to the technical field of radio frequency modules. The radio frequency module comprises an inductor combination on one side of a substrate. The inductor combination comprises a first inductor and a second inductor. The projection of the first inductor on the substrate along a first direction and the projection of the second inductor on the substrate along the first direction partially overlap. The first direction intersects the plane in which the substrate is located, and the magnetic induction line directions of the first inductor and the second inductor are parallel to the first direction. The above-mentioned projection overlap part generates a first induced magnetic field based on the mutual inductance between the first inductor and the second inductor. The area of one of the first inductor and the second inductor, except for the projection overlap part, forms a second induced magnetic field. The magnetic induction line directions of the first induced magnetic field and the second induced magnetic field are opposite, and the absolute values of the magnetic fluxes are equal, so that the two can offset each other, the mutual inductance between adjacent inductors is eliminated, and the radio frequency module is more suitable for miniaturization.

Description

Technical Field

[0001] This application relates to the field of radio frequency module technology, and more particularly to a radio frequency module, an inductor assembly, a communication device, and an electronic device. Background Technology

[0002] With the miniaturization trend in electronic devices using RF modules, RF modules themselves are also gradually becoming smaller. However, as RF modules become smaller, it is increasingly impossible to reduce the mutual inductance between adjacent inductors by increasing the distance between them. Therefore, mutual interference between inductors in RF modules has become an unavoidable problem, making the reduction of mutual inductance between inductors in RF modules a key issue for those skilled in the art. Utility Model Content

[0003] In view of this, this application provides a radio frequency module, a communication device, and an electronic device, the solutions of which are as follows:

[0004] A radio frequency module, comprising:

[0005] substrate;

[0006] At least one inductor assembly located on one side of the substrate, the inductor assembly including a first inductor and a second inductor, wherein the projection of the first inductor onto the substrate along a first direction and the projection of the second inductor onto the substrate along the first direction partially overlap; the first direction intersects the plane of the substrate, and the magnetic field lines of the first inductor and the second inductor are parallel to the first direction; the overlapping projection portion generates a first induced magnetic field based on the mutual inductance between the first inductor and the second inductor; and the region of one of the first inductor and the second inductor other than the overlapping projection portion forms a second induced magnetic field.

[0007] The magnetic field lines of the first induced magnetic field and the second induced magnetic field are in opposite directions, and the absolute values ​​of the magnetic flux of the first induced magnetic field and the second induced magnetic field are equal.

[0008] Optionally, along the second direction, the first inductor includes opposing first and second sides, the second inductor includes opposing third and fourth sides, and the second direction is parallel to the plane of the substrate.

[0009] The third side is located between the first side and the second side, and the third side is closer to the second side than the fourth side; along the second direction, the distance between the second side and the fourth side is a first distance, and the distance between the third side and the fourth side is a second distance, wherein the first distance is less than the second distance;

[0010] Based on the first distance, the area of ​​the overlapping projection portion is a preset area, so that the absolute values ​​of the magnetic flux of the first induced magnetic field and the second induced magnetic field are equal.

[0011] Optionally, along a third direction, the first inductor includes a fifth and a sixth opposite side, and the second inductor includes a seventh and an eighth opposite side, wherein the third direction is parallel to the plane of the substrate and intersects the second direction;

[0012] The seventh side is located between the fifth side and the sixth side, and the seventh side is closer to the sixth side than the eighth side. The fifth side and the sixth side are located between the first side and the second side, and the seventh side and the eighth side are located between the third side and the fourth side.

[0013] Along the third direction, the distance between the sixth side and the eighth side is the third distance, the distance between the seventh side and the eighth side is the fourth distance, and the third distance is greater than or equal to 0 and less than the fourth distance;

[0014] Based on the first distance and the third distance, the area of ​​the overlapping projection portion is a preset area, so that the absolute values ​​of the magnetic flux of the first induced magnetic field and the second induced magnetic field are equal.

[0015] Optionally, the first inductor includes at least one first coil, and the second inductor includes at least one second coil, wherein the direction of current transmission on the first coil is different from the direction of current transmission on the second coil;

[0016] Wherein, if the first inductor includes a plurality of first coils connected in sequence, wherein the i-th first coil is wrapped around the periphery of the (i+1)-th first coil, i≥1; if the second inductor includes a plurality of second coils connected in sequence, wherein the k-th second coil is wrapped around the periphery of the (k+1)-th second coil, k≥1.

[0017] Optionally, the winding direction of the first coil is the same as the winding direction of the second coil; or

[0018] The winding direction of the plurality of first coils is different from the winding direction of the plurality of second coils.

[0019] Optionally, the plurality of first coils are located in the same plane, and the plurality of second coils are located in the same plane; or

[0020] The plurality of first coils are stacked and arranged in a direction perpendicular to the plane of the substrate, and the plurality of second coils are stacked and arranged in a direction perpendicular to the plane of the substrate.

[0021] Optionally, the plurality of first coils are stacked and arranged in a direction perpendicular to the plane of the substrate, and the plurality of second coils are stacked and arranged in a direction perpendicular to the plane of the substrate.

[0022] Along the fourth direction, the diameters of the first coils are the same and the diameters of the second coils are the same, or the diameters of the first coils are different and the diameters of the second coils are different.

[0023] The fourth direction is parallel to the plane of the substrate.

[0024] An inductor assembly is applied to an RF module, the RF module further including a substrate, the inductor assembly being located on one side of the substrate, the inductor assembly comprising: a first inductor and a second inductor, wherein the projections of the first inductor along a first direction onto the substrate and the projections of the second inductor along the first direction onto the substrate partially overlap; the first direction intersects the plane of the substrate, and the magnetic field lines of the first inductor and the second inductor are parallel to the first direction; the overlapping projection portion generates a first induced magnetic field based on the mutual inductance between the first inductor and the second inductor, and the region of one of the first inductor and the second inductor other than the overlapping projection portion forms a second induced magnetic field;

[0025] The magnetic field lines of the first induced magnetic field and the second induced magnetic field are in opposite directions, and the absolute values ​​of the magnetic flux of the first induced magnetic field and the second induced magnetic field are equal.

[0026] A communication device comprising the radio frequency module described in any one of the preceding claims.

[0027] An electronic device comprising the radio frequency module described in any one of the preceding claims.

[0028] Compared with existing technologies, the beneficial effects of the technical solution in this application are as follows:

[0029] This RF module includes an inductor assembly located on one side of a substrate. The inductor assembly includes a first inductor and a second inductor. The projections of the first inductor onto the substrate along a first direction and the projections of the second inductor onto the substrate along the first direction partially overlap. The first direction intersects the plane of the substrate, and the magnetic field lines of the first and second inductors are parallel to the first direction. The aforementioned overlapping projection portion of the first and second inductors generates a first induced magnetic field based on the mutual inductance between the first and second inductors. A second induced magnetic field can be formed in the region of one of the first and second inductors excluding the overlapping projection portion. The magnetic field lines of the first and second induced magnetic fields are in opposite directions, and the absolute values ​​of their magnetic fluxes are equal, thus canceling each other out and eliminating the induced magnetic fields of the first and second inductors, thereby eliminating their mutual influence. Therefore, this RF module can eliminate the mutual inductance between adjacent inductors while reducing the distance between them, making it more suitable for miniaturization of RF modules. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of this application or related technologies, the drawings used in the description of the embodiments or prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this application. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0031] The structures, proportions, sizes, etc., shown in the accompanying drawings are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the implementation conditions of this application. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size should still fall within the scope of the technical content disclosed in this application, provided that they do not affect the effects and purposes that this application can produce.

[0032] Figure 1 This application provides a schematic diagram of the structure of an RF module;

[0033] Figure 2 A schematic diagram of another radio frequency module provided in this application;

[0034] Figure 3 The curve shows the coupling coefficient between the first inductor and the second inductor.

[0035] Figure 4 A schematic diagram of another radio frequency module provided in this application;

[0036] Figure 5 This is a schematic diagram of another radio frequency module provided in this application. Detailed Implementation

[0037] The embodiments of this application will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0038] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0039] As described in the background section, with the miniaturization of RF modules, the mutual influence between inductors in RF modules has become significant. Furthermore, with the miniaturization of RF modules, it is no longer possible to reduce the mutual influence between inductors by increasing the distance between them.

[0040] Based on the above, this application provides a radio frequency module, such as... Figure 1 As shown, Figure 1 This application provides a schematic diagram of the structure of a radio frequency module, which includes: a substrate 100 and at least one inductor assembly 200 located on one side of the substrate 100.

[0041] The aforementioned inductor assembly 200 includes a first inductor 202 and a second inductor 204. The projections of the first inductor 202 onto the substrate 100 along a first direction and the projections of the second inductor 204 onto the substrate 100 along the first direction partially overlap. The first direction intersects the plane containing the substrate 100, and the magnetic field lines of the first inductor 202 and the second inductor 204 are parallel to the first direction. That is, the first direction intersects the plane containing the substrate 100 but is not parallel to it. Furthermore, the magnetic field lines of the first inductor 202 and the second inductor 204 also intersect the plane containing the substrate 100 but are not parallel to it. It should be noted that the magnetic field lines of the first inductor 202 and the second inductor 204 refer to the direction determined based on the right-hand screw rule, meaning that the magnetic field lines of the first inductor 202 and the second inductor 204 are parallel to the central axis of the spiral coil formed by the magnetic field lines. It should also be noted that although the projections of the first inductor 202 along the first direction onto the substrate 100 and the projections of the second inductor 204 along the first direction onto the substrate 100 partially overlap, the first inductor 202 and the second inductor 204 can be insulated from each other, or they can be in no contact with each other. This application does not impose any limitations on this, and it depends on the specific circumstances.

[0042] The overlapping portion 300 of the projections of the first inductor 202 and the second inductor 204 can generate a first induced magnetic field 402 based on the mutual inductance between the first inductor 202 and the second inductor 204. Furthermore, a second induced magnetic field 404 can be formed in the area of ​​one of the first inductors 202 and the second inductor 204 other than the overlapping portion 300. It should be noted that since the projections of the first inductor 202 onto the substrate 100 along the first direction and the projections of the second inductor 204 onto the substrate 100 along the first direction overlap, and the first direction is parallel to the magnetic field lines of the first inductor 202 and the second inductor 204, the overlapping region can contain both the magnetic field lines of the first inductor 202 and the second inductor 204. Therefore, the overlapping portion 300 contains the mutual inductance of the first inductor 202 and the second inductor 204, and thus the overlapping portion 300 can generate the first induced magnetic field 402 based on the mutual inductance between the first inductor 202 and the second inductor 204.

[0043] In this system, the magnetic field lines of the first induced magnetic field 402 and the second induced magnetic field 404 are in opposite directions, and the absolute values ​​of their magnetic fluxes are equal. Since the magnetic field lines of the first induced magnetic field 402 and the second induced magnetic field 404 are in opposite directions, they are two induced magnetic fields with opposite directions. That is, if the first induced magnetic field 402 is defined as a positive magnetic field, then the second induced magnetic field 404 is a negative magnetic field; similarly, if the second induced magnetic field 404 is defined as a positive magnetic field, then the first induced magnetic field 402 is a positive magnetic field. Furthermore, since the absolute values ​​of their magnetic fluxes are equal, they are two magnetic fields with opposite directions and equal magnitudes, thus canceling each other out and eliminating the induced magnetic fields of the first inductor 202 and the second inductor 204, thereby eliminating the mutual influence between the first inductor 202 and the second inductor 204.

[0044] As described above, this RF module can eliminate the mutual inductance between the first inductor 202 and the second inductor 204 by stacking them along their magnetic field lines, thereby eliminating their mutual influence. Simultaneously, by stacking the first inductor 202 and the second inductor 204 along their magnetic field lines, the RF module eliminates the mutual inductance between them. Compared to increasing the distance between adjacent inductors to eliminate mutual inductance, this RF module can eliminate mutual inductance between adjacent inductors while reducing the distance between them, making it more suitable for miniaturization of RF modules.

[0045] It should be noted that the absolute values ​​of the magnetic flux of the first induced magnetic field 402 and the second induced magnetic field 404 are equal. This can be because the absolute values ​​of the magnetic flux of the first induced magnetic field 402 and the second induced magnetic field 404 are small, or the absolute values ​​of the magnetic flux of the first induced magnetic field 402 and the second induced magnetic field 404 are approximately equal, in order to reduce or eliminate mutual inductance. The specific value depends on the tolerance of the radio frequency module to mutual inductance, and this application does not limit this.

[0046] In one embodiment of this application, such as Figure 2 As shown, Figure 2 This application provides a schematic diagram of the structure of an RF module. Along a second direction, the first inductor 202 includes a first side 1 and a second side 2, and the second inductor 204 includes a third side 3 and a fourth side 4, both opposite each other. The second direction is parallel to the plane of the substrate 100.

[0047] The third side 3 is located between the first side 1 and the second side 2, and the third side 3 is closer to the second side 2 than the fourth side 4. That is, along the second direction, the first side 1, the third side 3, the second side 2, and the fourth side 4 are arranged in sequence. Along the second direction, the distance between the second side 2 and the fourth side 4 is the first distance L1, and the distance between the third side 3 and the fourth side 4 is the second distance L2. The first distance L1 is less than the second distance L2.

[0048] Based on the first distance L1, the area of ​​the projected overlapping portion 300 is a preset area so that the absolute values ​​of the magnetic flux of the first induced magnetic field 402 and the second induced magnetic field 404 are equal. That is, based on the first distance L1, the area of ​​the projected overlapping portion 300 can be adjusted so that the absolute values ​​of the magnetic flux of the first induced magnetic field 402 and the second induced magnetic field 404 are equal.

[0049] Given that the first side 1, third side 3, second side 2, and fourth side 4 are arranged sequentially along the second direction, the projection of the region between the first inductor 202 and the second inductor 204 located along the first direction includes a projection overlap portion 300. That is, the projection overlap portion 300 is at least a part of the projection of the region between the first inductor 202 and the second inductor 204 located along the first direction. Therefore, the distance between the second side 2 and the fourth side 4 can affect the area of ​​the projection overlap portion 300; that is, the first distance L1 can determine the area of ​​the projection overlap portion 300. Since the magnetic flux of the magnetic field is determined by the magnetic induction intensity and the area of ​​the cross-section through which the magnetic field lines pass, the magnetic flux of the first induced magnetic field 402 depends on the product of the magnetic induction intensity and the area of ​​the projection overlap portion 300. Furthermore, since the current in each part of the RF module should be a set current or within a set range during operation, the magnetic induction intensity of the induced magnetic field generated by the first inductor 202 and the second inductor 204 is known and fixed. The first induced magnetic field 402 is generated by the mutual inductance between the first inductor 202 and the second inductor 204. Therefore, the magnetic flux density of the first induced magnetic field 402 should be known and fixed. Thus, the magnetic flux of the first induced magnetic field 402 can be determined by the area of ​​the projected overlapping portion 300. Since the first distance L1 determines the area of ​​the projected overlapping portion 300, the area of ​​the projected overlapping portion 300 can be adjusted to a preset area based on the first distance L1, so that the absolute values ​​of the magnetic flux of the first induced magnetic field 402 and the second induced magnetic field 404 are equal. This makes the magnetic field lines of the first induced magnetic field 402 and the second induced magnetic field 404 have opposite directions, and the absolute values ​​of the magnetic flux of the first induced magnetic field 402 and the second induced magnetic field 404 are equal, which can reduce or eliminate the mutual inductance between the first inductor 202 and the second inductor 204.

[0050] For example Figure 3 As shown, Figure 3 The graph shows the coupling coefficient curves of the first inductor 202 and the second inductor 204. Figure 3 The horizontal axis represents the first distance L1, in μm. Positive and negative values ​​of L1 indicate that the first inductor 202 is located on opposite sides of the second inductor 204 along the first direction. The vertical axis represents the coupling coefficient between the first inductor 202 and the second inductor 204. Figure 3 It can be seen that when the first distance L1 is between 60μm and 70μm, the coupling coefficient between the first inductor 202 and the second inductor 204 can be 0, thereby eliminating the mutual inductance between the first inductor 202 and the second inductor 204.

[0051] In one embodiment of this application, such as Figure 2As shown, along the third direction, the first inductor 202 includes opposing fifth sides 5 and sixth sides 6, and the second inductor 204 includes opposing seventh sides 7 and eighth sides 8. The third direction is parallel to the plane of the substrate 100 and intersects the second direction.

[0052] The seventh side 7 is located between the fifth side 5 and the sixth side 6, and the seventh side 7 is closer to the sixth side 6 than the eighth side 8. That is, along the third direction, the fifth side 5, the seventh side 7, the sixth side 6, and the eighth side 8 are arranged in sequence. At the same time, the fifth side 5 and the sixth side 6 are located between the first side 1 and the second side 2, and the seventh side 7 and the eighth side 8 are located between the third side 3 and the fourth side 4. For example, if the first inductor 202 and the second inductor 204 are rectangles, then the first side 1 and the second side 2 are two opposite sides of the rectangle formed by the first inductor 202, the fifth side 5 and the sixth side 6 are the remaining two opposite sides of the rectangle formed by the first inductor 202, the third side 3 and the fourth side 4 are the remaining two opposite sides of the rectangle formed by the second inductor 204, and the seventh side 7 and the eighth side 8 are the remaining two opposite sides of the rectangle formed by the second inductor 204.

[0053] Along the third direction, the distance between the sixth side 6 and the eighth side 8 is the third distance L3, and the distance between the seventh side 7 and the eighth side 8 is the fourth distance L4. The third distance L3 is greater than or equal to 0 and less than the fourth distance L4. Based on the first distance L1 and the third distance L3, the area of ​​the projected overlapping portion 300 is a preset area to make the absolute values ​​of the magnetic flux of the first induced magnetic field 402 and the second induced magnetic field 404 equal. That is, based on the first distance L1 and the third distance L3, the area of ​​the projected overlapping portion 300 can be adjusted to make the absolute values ​​of the magnetic flux of the first induced magnetic field 402 and the second induced magnetic field 404 equal.

[0054] Since the fifth side 5, the seventh side 7, the sixth side 6, and the eighth side 8 are arranged sequentially along the third direction, and the fifth side 5 and the sixth side 6 are located between the first side 1 and the second side 2, and the seventh side 7 and the eighth side 8 are located between the third side 3 and the fourth side 4, the projection of the portion of the first inductor 202 and the second inductor 204 located between the second side 2 and the fourth side 4, and the portion located between the sixth side 6 and the eighth side 8 along the first direction is the aforementioned projection overlap portion 300. Therefore, based on the first distance L1 and the third distance L3, the area of ​​the projection overlap portion 300 can be adjusted to a preset area so that the absolute values ​​of the magnetic flux of the first induced magnetic field 402 and the second induced magnetic field 404 are equal, thereby reducing or eliminating the mutual inductance between the first inductor 202 and the second inductor 204.

[0055] Based on the above embodiments, in one embodiment of this application, such as Figure 4 As shown, Figure 4This is a schematic diagram of the structure of a radio frequency module provided in this application. The third distance L3 is equal to 0, meaning that along the third direction, the sixth side 6 of the first inductor 202 and the eighth side 8 of the second inductor 204 coincide. In another embodiment of this application, as... Figure 2 As shown, the third distance L3 is greater than 0 and less than the fourth distance L4, meaning that along the third direction, the sixth side 6 of the first inductor 202 and the eighth side 8 of the second inductor 204 do not coincide. Therefore, it can be seen that the first inductor 202 and the second inductor 204 in the inductor combination 200 of this RF module can have multiple combination methods, making it suitable for more application scenarios.

[0056] It should be noted that the first inductor 202 and the second inductor 204 may have the same shape and size, or they may be different. Figures 1-3 This is merely a schematic diagram of the inductor assembly 200 and does not limit the shape and size of the first inductor 202 and the second inductor 204, which will be determined on a case-by-case basis.

[0057] In one embodiment of this application, such as Figure 2 As shown, the first inductor 202 includes at least one first coil 206, and the second inductor 204 includes at least one second coil 208. The direction of current transmission on the first coil 206 is different from the direction of current transmission on the second coil 208, so that the direction of the magnetic field lines of the first induced magnetic field 402 is opposite to the direction of the magnetic field lines of the second induced magnetic field 404.

[0058] Based on the above, such as Figure 5 As shown, Figure 5 This application provides a schematic diagram of the structure of an RF module. If the first inductor 202 includes multiple first coils 206 connected in sequence, then the i-th first coil 206 surrounds the (i+1)-th first coil 206, where i ≥ 1. The second inductor 204 includes multiple second coils 208 connected in sequence, then the k-th second coil 208 surrounds the (k+1)-th second coil 208, where k ≥ 1. The winding direction of the first coil 206 is the same as that of the second coil 208, i.e., both the first coil 206 and the second coil 208 are wound clockwise or both are wound counterclockwise. Alternatively, the winding direction of the first coil 206 is different from that of the second coil 208, i.e., the first coil 206 is wound clockwise and the second coil 208 is wound counterclockwise, or the first coil 206 is wound counterclockwise and the second coil 208 is wound counterclockwise. In summary, the first inductor 202 and the second inductor 204 in the inductor combination 200 of the RF module can have various combination methods, which can be applied to more application scenarios.

[0059] In one embodiment of this application, a plurality of first coils 206 are located on the same plane, and a plurality of second coils 208 are located on the same plane, or a plurality of first coils 206 are stacked and arranged along a direction perpendicular to the plane of the substrate 100, and a plurality of second coils 208 are stacked and arranged along a direction perpendicular to the plane of the substrate 100. That is to say, the first inductor 202 and the second inductor 204 in the inductor combination of this RF module can be either planar inductors or multilayer inductors, which can be applied to more application scenarios. It should be noted that if the first inductor 202 and the second inductor 204 include multiple coils and the first inductor 202 and the second inductor 204 are planar inductors, the projection of the first inductor 202 and the second inductor 204 along the first direction includes the projection of the outermost coils of the first inductor 202 and the second inductor 204 along the first direction. If the first inductor 202 and the second inductor 204 include multiple coils and the first inductor 202 and the second inductor 204 are multilayer inductors, the projection of the first inductor 202 and the second inductor 204 along the first direction is the projection of the coils of the first inductor 202 and the second inductor 204 on the side opposite to the substrate 100 along the first direction.

[0060] In one embodiment of this application, if a plurality of first coils 206 are stacked and arranged in a direction perpendicular to the plane of the substrate 100, and a plurality of second coils 208 are stacked and arranged in a direction perpendicular to the plane of the substrate 100, that is, if the first inductor 202 and the second inductor 204 are multilayer inductors, along the fourth direction, the diameters of the first coils 206 are the same and the diameters of the second coils 208 are the same, or the diameters of the first coils 206 are different and the diameters of the second coils 208 are different.

[0061] Based on the above, if the diameters of the first coils 206 and the second coils 208 are the same along the fourth direction, it can be that multiple first coils 206 have the same diameter, multiple second coils 208 have the same diameter, and the diameters of the first coils 206 and the second coils 208 are the same; or it can be that multiple first coils 206 have the same diameter, multiple second coils 208 have the same diameter, but the diameters of the first coils 206 and the second coils 208 are different, wherein the fourth direction is parallel to the plane of the substrate 100. If the diameters of the first coils 206 and the second coils 208 are different along the fourth direction, it can be that the diameters of multiple first coils 206 gradually decrease along the direction away from the substrate 100, and the diameters of multiple second coils 208 gradually decrease along the direction away from the substrate 100; or it can be that the diameters of multiple first coils 206 gradually increase along the direction away from the substrate 100, and the diameters of multiple second coils 208 gradually increase along the direction away from the substrate 100, etc.

[0062] This application also provides an inductor assembly applied to an RF module, wherein the RF module is the RF module described in any of the above embodiments. For example... Figure 1As shown, the RF module includes a substrate 100, and the inductor assembly 200 is located on one side of the substrate 100. Continuing as... Figure 1 As shown, the inductor assembly 200 includes a first inductor 202 and a second inductor 204. The projection of the first inductor 202 onto the substrate 100 along a first direction and the projection of the second inductor 204 onto the substrate 100 along the first direction partially overlap. The first direction intersects the plane where the substrate 100 is located, and the magnetic field lines of the first inductor 202 and the second inductor 204 are parallel to the first direction. That is, the first direction intersects the plane where the substrate 100 is located, but is not parallel to the plane where the substrate 100 is located. The magnetic field lines of the first inductor 202 and the second inductor 204 also intersect the plane where the substrate 100 is located, but are not parallel to the plane where the substrate 100 is located.

[0063] The aforementioned projection overlap portion 300 of the first inductor 202 and the second inductor 204 can generate a first induced magnetic field 402 based on the mutual inductance between the first inductor 202 and the second inductor 204, and the area of ​​one of the first inductor 202 and the second inductor 204 other than the projection overlap portion 300 can form a second induced magnetic field 404.

[0064] In this system, the magnetic field lines of the first induced magnetic field 402 and the second induced magnetic field 404 are in opposite directions, and the absolute values ​​of their magnetic fluxes are equal. Since the magnetic field lines of the first induced magnetic field 402 and the second induced magnetic field 404 are in opposite directions, they are two induced magnetic fields with opposite directions. That is, if the first induced magnetic field 402 is defined as a positive magnetic field, then the second induced magnetic field 404 is a negative magnetic field; similarly, if the second induced magnetic field 404 is defined as a positive magnetic field, then the first induced magnetic field 402 is a positive magnetic field. Furthermore, since the absolute values ​​of their magnetic fluxes are equal, they are two magnetic fields with opposite directions and equal magnitudes, thus canceling each other out and eliminating the induced magnetic fields of the first inductor 202 and the second inductor 204, thereby eliminating the mutual influence between the first inductor 202 and the second inductor 204.

[0065] This application also provides a communication device, which includes the radio frequency module described in any of the above embodiments.

[0066] This application also provides an electronic device that includes the radio frequency module described in any of the above embodiments.

[0067] The various embodiments in this specification are described in a progressive, parallel, or combined manner. Each embodiment focuses on its differences from other embodiments, and similar or identical parts between embodiments can be referred to interchangeably. For the apparatuses disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the descriptions are relatively simple, and relevant parts can be referred to the method section.

[0068] It should be noted that, in the description of this application, the terms "upper," "lower," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. When a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be a component centrally located at the same time.

[0069] It should also be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that an article or apparatus comprising a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such an article or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the article or apparatus that includes the aforementioned element.

[0070] The above description of the disclosed embodiments enables those skilled in the art to make or use this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A radio frequency module, characterized by, include: substrate; At least one inductor assembly located on one side of the substrate, the inductor assembly including a first inductor and a second inductor, wherein the projection of the first inductor onto the substrate along a first direction and the projection of the second inductor onto the substrate along the first direction partially overlap; the first direction intersects the plane of the substrate, and the magnetic field lines of the first inductor and the second inductor are parallel to the first direction; the overlapping projection portion generates a first induced magnetic field based on the mutual inductance between the first inductor and the second inductor; and the region of one of the first inductor and the second inductor other than the overlapping projection portion forms a second induced magnetic field. The magnetic field lines of the first induced magnetic field and the second induced magnetic field are in opposite directions, and the absolute values ​​of the magnetic flux of the first induced magnetic field and the second induced magnetic field are equal.

2. The radio module of claim 1, wherein, Along the second direction, the first inductor includes a first side and a second side opposite to each other, the second inductor includes a third side and a fourth side opposite to each other, and the second direction is parallel to the plane of the substrate. The third side is located between the first side and the second side, and the third side is closer to the second side than the fourth side; along the second direction, the distance between the second side and the fourth side is a first distance, and the distance between the third side and the fourth side is a second distance, wherein the first distance is less than the second distance; Based on the first distance, the area of ​​the overlapping projection portion is a preset area, so that the absolute values ​​of the magnetic flux of the first induced magnetic field and the second induced magnetic field are equal.

3. The radio module of claim 2, wherein, Along a third direction, the first inductor includes a fifth and a sixth side opposite to each other, and the second inductor includes a seventh and an eighth side opposite to each other. The third direction is parallel to the plane where the substrate is located and intersects with the second direction. The seventh side is located between the fifth side and the sixth side, and the seventh side is closer to the sixth side than the eighth side. The fifth side and the sixth side are located between the first side and the second side, and the seventh side and the eighth side are located between the third side and the fourth side. Along the third direction, the distance between the sixth side and the eighth side is the third distance, the distance between the seventh side and the eighth side is the fourth distance, and the third distance is greater than or equal to 0 and less than the fourth distance; Based on the first distance and the third distance, the area of ​​the overlapping projection portion is a preset area, so that the absolute values ​​of the magnetic flux of the first induced magnetic field and the second induced magnetic field are equal.

4. The radio module of claim 1, wherein, The first inductor includes at least one first coil, and the second inductor includes at least one second coil, wherein the direction of current transmission on the first coil is different from the direction of current transmission on the second coil; Wherein, if the first inductor includes a plurality of first coils connected in sequence, wherein the i-th first coil is wrapped around the periphery of the (i+1)-th first coil, i≥1; if the second inductor includes a plurality of second coils connected in sequence, wherein the k-th second coil is wrapped around the periphery of the (k+1)-th second coil, k≥1.

5. The radio module of claim 4, wherein, The winding direction of the first coil is the same as the winding direction of the second coil; or The winding direction of the plurality of first coils is different from the winding direction of the plurality of second coils.

6. The radio frequency module according to claim 4, characterized in that, The plurality of first coils are located in the same plane, and the plurality of second coils are located in the same plane; or The plurality of first coils are stacked and arranged in a direction perpendicular to the plane of the substrate, and the plurality of second coils are stacked and arranged in a direction perpendicular to the plane of the substrate.

7. The radio module of claim 6, wherein, If the plurality of first coils are stacked and arranged in a direction perpendicular to the plane of the substrate, and the plurality of second coils are stacked and arranged in a direction perpendicular to the plane of the substrate; Along the fourth direction, the diameters of the first coils are the same and the diameters of the second coils are the same, or the diameters of the first coils are different and the diameters of the second coils are different. The fourth direction is parallel to the plane of the substrate.

8. An inductor combination applied to a radio frequency module, the radio frequency module further comprising a substrate, the inductor combination being located on one side of the substrate, characterized in that, The inductor assembly includes: a first inductor and a second inductor, wherein the projections of the first inductor onto the substrate along a first direction and the projections of the second inductor onto the substrate along the first direction partially overlap; the first direction intersects the plane of the substrate, and the magnetic field lines of the first inductor and the second inductor are parallel to the first direction; the overlapping projection portion generates a first induced magnetic field based on the mutual inductance between the first inductor and the second inductor; and the region of one of the first inductor and the second inductor other than the overlapping projection portion forms a second induced magnetic field. The magnetic field lines of the first induced magnetic field and the second induced magnetic field are in opposite directions, and the absolute values ​​of the magnetic flux of the first induced magnetic field and the second induced magnetic field are equal.

9. A communication device, characterized by Includes the radio frequency module as described in any one of claims 1-7.

10. An electronic device, comprising: Includes the radio frequency module as described in any one of claims 1-7.

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