electronic components

By configuring inductors parallel and not in the same straight line on the substrate and performing magnetic coupling, the noise countermeasures of existing electronic components in the case of wideband and multi-frequency approaches are solved, and higher attenuation characteristics and noise suppression effects are achieved.

CN114203423BActive Publication Date: 2025-09-02MURATA MFG CO LTD
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Patent Information

Application Number
CN202111012999.8
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Priority Date
2020-09-02
Filing Date
2021-08-31
Publication Date
2025-09-02
Estimated Expiration
2041-08-31

AI Technical Summary

Technical Problem

In the case where the broadband and multiple usage frequencies are close, effective noise countermeasures cannot be achieved, and when the inductor is not magnetically coupled, higher attenuation characteristics cannot be obtained.

Method used

By configuring the first inductor and the second inductor on the substrate, the central axis is parallel to the main surface of the substrate and not on the same straight line, and arranged at a magnetic coupling distance, a transmission line is connected in series, and a specific characteristic impedance is designed to achieve magnetic coupling.

Benefits of technology

It achieves higher attenuation characteristics in the self-resonant frequency band, and improves the noise suppression ability of electronic components.

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Abstract

The present invention provides an electronic component capable of achieving enhanced attenuation characteristics. The electronic component includes a substrate, a first inductor and a second inductor disposed on a principal surface of the substrate, and a transmission line disposed on the substrate and connecting the first and second inductors in series. The first central axis of the first inductor and the second central axis of the second inductor are parallel to the principal surface of the substrate and are not aligned when viewed from a direction perpendicular to the principal surface of the substrate. The first and second inductors are disposed at a distance sufficient to provide magnetic coupling.
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Description

Technical Field

[0001] The present invention relates to electronic components. Background Art

[0002] Conventionally, the communication frequency band used in components such as mobile phones was limited, and noise suppression methods employed were to match the specific operating frequency band with the self-resonant frequency of noise filters such as inductors, creating high impedance at specific frequencies within the transmission line.

[0003] In this case, high-Q air-core inductors are typically used. While multiple components are used to attenuate multiple frequency bands, the pass characteristics of frequencies outside the operating frequency band are designed to prevent attenuation due to antiresonance. Therefore, when operating over a wide frequency band or when multiple operating frequencies are close together, appropriate noise suppression measures cannot be implemented.

[0004] Therefore, conventionally, electronic components using inductors made of ceramic materials (having a magnetic permeability greater than 1) have been used to reduce the Q value, weaken the resonance, and expand the high impedance frequency band.

[0005] For example, a conventional inductor is described in Japanese Patent Application Laid-Open No. 2013-219088 (Patent Document 1). This inductor comprises a core body comprising a winding core portion and first and second flange portions; first and second electrodes disposed on the first and second flange portions, respectively; and a wire electrically connected to the first and second electrodes and wound around the winding core portion. Two of these inductors are then prepared, placed on a substrate, and connected in series via a transmission line to form an electronic component.

[0006] Patent Document 1: Japanese Patent Application Laid-Open No. 2013-219088

[0007] However, it is known that the following problem exists when actually manufacturing and using these conventional electronic components: Specifically, when two inductors are arranged on a substrate in a state where they are not magnetically coupled or have weak magnetic coupling, the two inductors each exhibit impedance characteristics, making it impossible to achieve higher attenuation characteristics. Summary of the Invention

[0008] Therefore, an object of the present disclosure is to provide an electronic component capable of obtaining higher attenuation characteristics.

[0009] To solve the above-mentioned problems, an electronic component according to one embodiment of the present disclosure includes: a substrate; a first inductor and a second inductor arranged on a main surface of the substrate; and a transmission line provided on the substrate and connecting the first inductor and the second inductor in series.

[0010] The first central axis of the first inductor and the second central axis of the second inductor are parallel to the main surface of the substrate and are not located on the same straight line when viewed from a direction perpendicular to the main surface of the substrate.

[0011] The first inductor and the second inductor are arranged at a distance sufficient to allow magnetic coupling.

[0012] Here, the transmission line refers to wiring connecting the first and second inductors, designed to have a specific characteristic impedance (e.g., 50Ω). The magnetic coupling distance means that the distance between the first center of the first inductor and the second center of the second inductor, when viewed perpendicular to the main surface of the substrate, is within 5 mm.

[0013] The first central axis of the first inductor is the axis extending along the winding direction of the coil constituting the first inductor and passing through the center of the coil (also referred to as the winding axis of the coil of the first inductor). The second central axis of the second inductor is the axis extending along the winding direction of the coil constituting the second inductor and passing through the center of the coil (also referred to as the winding axis of the coil of the second inductor).

[0014] According to the above embodiment, while the first central axis of the first inductor and the second central axis of the second inductor are parallel to the main surface of the substrate and not aligned in a straight line when viewed from a direction perpendicular to the main surface of the substrate, the first and second inductors are arranged at a distance sufficient to allow magnetic coupling. Consequently, the first and second inductors are magnetically coupled, and the total inductance is greater than the inherent inductance of each of the first and second inductors. This allows for high attenuation characteristics within the self-resonant frequency band.

[0015] According to the electronic component as one embodiment of the present disclosure, higher attenuation characteristics can be obtained. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a perspective view showing the electronic component according to the first embodiment.

[0017] Figure 2 It is from Figure 1 Top view observed in the plane direction.

[0018] Figure 3 It is a top view showing an electronic component of a comparative example.

[0019] Figure 4 This is a graph showing the relationship between frequency and S21 in Examples and Comparative Examples.

[0020] Figure 5A It is a top view showing another shape of the transmission line.

[0021] Figure 5BIt is a top view showing another shape of the transmission line.

[0022] Figure 5C It is a top view showing another shape of the transmission line.

[0023] Figure 5D It is a top view showing another shape of the transmission line.

[0024] Figure 6A This is a plan view of the first embodiment showing the winding directions of the first inductor and the second inductor and the positions of the transmission lines.

[0025] Figure 6B This is a plan view of the second embodiment showing the winding directions of the first inductor and the second inductor and the positions of the transmission lines.

[0026] Figure 6C This is a plan view of the third embodiment showing the winding directions of the first inductor and the second inductor and the positions of the transmission lines.

[0027] Figure 6D This is a plan view of the fourth embodiment showing the winding directions of the first inductor and the second inductor and the positions of the transmission lines.

[0028] Figure 7 Graph showing the relationship between frequency and S21 in the first to fourth embodiments.

[0029] Figure 8 It is a plan view showing an electronic component according to a second embodiment.

[0030] Description of Reference Numerals

[0031] 1A…first inductor; 1B…second inductor; 10…core; 11…first flange; 12…second flange; 13…winding core; 21…wire; 31…first electrode; 32…second electrode; 40…substrate; 40a…principal surface; 50, 50A–50D…transmission line; 51…first end; 52…second end; 61…first line; 62…second line; C1…first central axis; C2…second central axis; K…shortest distance between the first and second inductors; M1…first center; M2…second center; N…straight line connecting the first and second centers; P…distance between the first and second centers. DETAILED DESCRIPTION

[0032] Hereinafter, an electronic component as one embodiment of the present disclosure will be described in detail based on the illustrated embodiment. Note that the drawings include some schematic components and may not reflect actual dimensions or ratios.

[0033] (First embodiment)

[0034] Figure 1 It is a perspective view showing the electronic component according to the first embodiment. Figure 2 It is from Figure 1 The top view of the plane direction. Figure 1 and Figure 2 As shown, the electronic component includes a substrate 40, a first inductor 1A and a second inductor 1B disposed on a principal surface 40a of the substrate 40, and a transmission line 50 provided on the substrate 40 and connecting the first inductor 1A and the second inductor 1B in series. Here, one direction on the principal surface 40a of the substrate 40 is referred to as the X direction, a direction perpendicular to the X direction on the principal surface 40a of the substrate 40 is referred to as the Y direction, and a direction perpendicular to the principal surface 40a of the substrate 40 is referred to as the Z direction. For convenience, the principal surface 40a of the substrate 40 is shaped as a quadrilateral, the X direction being the direction of one side of the principal surface 40a of the substrate 40, and the Y direction being the direction of another side of the principal surface 40a of the substrate 40.

[0035] The first inductor 1A includes a core 10, a first electrode 31 and a second electrode 32 provided on the core 10, and a wire 21 wound around the core 10 and electrically connected to the first electrode 31 and the second electrode 32. The second inductor 1B has a similar structure, and therefore its description is omitted. However, the characteristics of the second inductor 1B differ from those of the first inductor 1A. For example, the number of turns in the first inductor 1A and the second inductor 1B may differ.

[0036] The core 10 includes: a winding core 13 having a shape extending in a certain direction; a first flange 11 provided at a first end of the extension direction of the winding core 13 and extending in a direction perpendicular to the direction; and a second flange 12 provided at a second end of the extension direction of the winding core 13 and extending in a direction perpendicular to the direction. The shapes of the winding core 13, the first flange 11, and the second flange 12 are, for example, rectangular parallelepipeds, but are not limited thereto. Other shapes may be used, such as pentagonal prisms, hexagonal prisms, and other polygonal prisms or cylinders other than rectangular parallelepipeds. In addition, a portion may be a curved surface. The first flange 11 and the second flange 12 extend from the entire surface of the winding core 13 parallel to the extension direction, but the first flange 11 and the second flange 12 may also extend from one side of the entire surface of the winding core 13.

[0037] The material of the core 10 is preferably a magnetic material such as a sintered body of ferrite or a molded body of a resin containing magnetic powder. Alternatively, it may be a non-magnetic material such as alumina, a resin containing non-magnetic powder, or a resin without filler. The core 10 is solid, but may also be hollow (hollow core). The magnetic permeability of the core 10 is preferably greater than 1. In the following, the lower surface of the first flange portion 11 and the lower surface of the second flange portion 12 are set as the surface to be mounted on the substrate 40.

[0038] The first electrode 31 is provided on the lower surface of the first flange portion 11, and the second electrode 32 is provided on the lower surface of the second flange portion 12. The first electrode 31 and the second electrode 32 are formed, for example, by applying a conductive paste having silver (Ag) as a conductive component and sintering it, or by sputtering nickel (Ni)-chromium (Cr) or nickel (Ni)-copper (Cu). In addition, a plating film can be further formed as needed. As the material of the plating film, for example, metals such as tin (Sn), Cu, Ni, and alloys such as Ni-Sn can be used. In addition, the plating film can be a multilayer structure, or two or more plating films can be used.

[0039] The wire 21 is wound around the winding core 13 to form a coil. The wire 21 is, for example, an insulated coated conductor made of a metal such as copper, covered with a coating made of a resin such as polyurethane or polyamide-imide. One end of the wire 21 is electrically connected to the first electrode 31, and the other end of the wire 21 is electrically connected to the second electrode 32. The wire 21 is connected to the first and second electrodes 31, 32 by, for example, thermocompression bonding, soldering, welding, or the like.

[0040] When the first inductor 1A is mounted on the substrate 40, the lower surfaces of the first flange portion 11 and the second flange portion 12 face the principal surface 40a (upper surface) of the substrate 40. At this time, the first central axis C1 of the first inductor 1A is parallel to the principal surface 40a of the substrate 40. In other words, the winding axis of the wire 21 of the first inductor 1A is parallel to the substrate 40.

[0041] Here, "parallel to the principal surface 40a of the substrate 40" can be said to be parallel to the XY plane. Furthermore, "parallel" does not only mean completely parallel but also includes substantially parallel. For example, variations (manufacturing errors) in mounting the first inductor 1A on the substrate 40 are allowed.

[0042] The first central axis C1 of the first inductor 1A can be referred to as the winding axis of the coil or as the axis passing through the center of the winding core 13 in the extending direction of the winding core 13 of the first inductor 1A.

[0043] The first inductor 1A may further include a cover member (not shown). The cover member is provided on the upper surface and side surfaces of the winding core 13 to cover the wire 21 wound around the winding core 13. For example, epoxy resins can be used as the material for the cover member. The cover member enables reliable suction by a suction nozzle when the first inductor 1A is mounted on the substrate 40. Furthermore, the cover member prevents damage to the wire 21 during suction by the suction nozzle.

[0044] The substrate 40 is insulating and is made of, for example, a phenolic resin with a paper base (paper-phenolic substrate) or an epoxy resin with a glass cloth base (glass-epoxy substrate). The substrate 40 is, for example, a multilayer substrate, consisting of a first layer, a second layer, and a third layer. The first, second, and third layers are stacked sequentially from bottom to top. A first line 61 and a second line 62 serving as signal lines are arranged on the main surface 40a of the substrate 40. The first line 61 is an input-side signal line, and the second line 62 is an output-side signal line. For example, a power line and a ground line are arranged on the first and second layers.

[0045] The first electrode 31 of the first inductor 1A is connected to the first line 61, and the first electrode 31 of the second inductor 1B is connected to the second line 62. The second electrode 32 of the first inductor 1A is connected to the first end 51 of the transmission line 50, and the second electrode 32 of the second inductor 1B is connected to the second end 52 of the transmission line 50. Thus, the first line 61, the first inductor 1A, the transmission line 50, the second inductor 1B, and the second line 62 are connected in series. Signals are input to the first line 61 and output from the second line 62.

[0046] The first inductor 1A and the second inductor 1B are magnetically coupled. The transmission line 50 is designed to have a specific characteristic impedance (e.g., 50Ω). The transmission line 50 is provided on the main surface 40a of the substrate 40, making it easy to route the transmission line 50. The first wire 61 and the second wire 62 also have the same structure as the transmission line 50.

[0047] like Figure 2 As shown, the first central axis C1 of the first inductor 1A and the second central axis C2 of the second inductor 1B are parallel to the principal surface 40a of the substrate 40. When viewed from a direction (Z direction) perpendicular to the principal surface 40a of the substrate 40 (hereinafter referred to as a plan view), the first central axis C1 of the first inductor 1A and the second central axis C2 of the second inductor 1B are not aligned. Here, "aligned" does not necessarily mean completely aligned; it also includes being substantially aligned.

[0048] Specifically, when viewed from a direction parallel to the principal surface 40a of the substrate 40 and perpendicular to the first central axis C1 or the second central axis C2, the first inductor 1A and the second inductor 1B overlap. The first central axis C1 and the second central axis C2 are parallel when viewed from above. Here, "parallel" not only means completely parallel but also substantially parallel. The first central axis C1 and the second central axis C2 each extend in the X-direction and are parallel to each other in the Y-direction. When viewed from the Y-direction, the first inductor 1A and the second inductor 1B overlap.

[0049] In other words, the surface of the first flange portion 11 of the first inductor 1A that is parallel to the first central axis C1 is arranged opposite the surface of the first flange portion 11 of the second inductor 1B that is parallel to the second central axis C2. Furthermore, the surface of the second flange portion 12 of the first inductor 1A that is parallel to the first central axis C1 is arranged opposite the surface of the second flange portion 12 of the second inductor 1B that is parallel to the second central axis C2.

[0050] The first inductor 1A and the second inductor 1B are arranged at a magnetically coupled distance P. The magnetically coupled distance P means that the distance between the first center M1 of the first inductor 1A and the second center M2 of the second inductor 1B is within 5 mm in a plan view.

[0051] Thus, while the first central axis C1 of the first inductor 1A and the second central axis C2 of the second inductor 1B are parallel to the principal surface 40a of the substrate 40 and are not aligned in a straight line when viewed from above, the first inductor 1A and the second inductor 1B are arranged at a distance sufficient to allow magnetic coupling. Consequently, the first inductor 1A and the second inductor 1B are magnetically coupled, and the total inductance is greater than the inherent inductance of each of the first inductor 1A and the second inductor 1B. This achieves high attenuation characteristics within the self-resonant frequency band.

[0052] Furthermore, when viewed in a direction parallel to the principal surface 40 a of the substrate 40 and perpendicular to the first central axis C1 or the second central axis C2 , the first inductor 1A and the second inductor 1B overlap, thereby facilitating magnetic coupling between the first inductor 1A and the second inductor 1B, thereby achieving higher attenuation characteristics.

[0053] Furthermore, while the first and second central axes C1 and C2 are not aligned when viewed from above, they are parallel. This positional relationship facilitates magnetic coupling between the first inductor 1A and the second inductor 1B, resulting in improved attenuation characteristics. Specifically, when the first and second central axes C1 and C2 are parallel, the magnetic flux generated in the first inductor 1A easily passes through the second central axis C2 of the second inductor 1B, and the magnetic flux generated in the second inductor 1B easily passes through the first central axis C1 of the first inductor 1A. Consequently, magnetic coupling between the first inductor 1A and the second inductor 1B is facilitated.

[0054] An example of this case will be described.

[0055] In an embodiment, Figure 2 As shown in FIG. 1 , the shortest distance K between the first inductor 1A and the second inductor 1B is 0.1 mm when viewed from above. Figure 3As shown, the first central axis C1 of the first inductor 1A and the second central axis C2 of the second inductor 1B are located on the same straight line when viewed from above, and the shortest distance K between the first inductor 1A and the second inductor 1B (i.e., the shortest distance K between the second flange portion 12 of the first inductor 1A and the first flange portion 11 of the second inductor 1B) is 0.1 mm.

[0056] Figure 4 The relationship between the frequency and S21 in the embodiment and the comparative example is shown in FIG. Figure 4 As shown, the curve G1 of the embodiment can achieve high attenuation characteristics in the low frequency range compared to the curve G0 of the comparative example. Thus, in the embodiment, high attenuation characteristics can be achieved in the frequency range of about 1 GHz, that is, from 600 MHz to 1.8 GHz.

[0057] like Figure 2 As shown in FIG. 1 , the transmission line 50 is formed so as not to intersect the straight line N connecting the first center M1 and the second center M2 when viewed from above. That is, the first end 51 of the transmission line 50 is connected to the second electrode 32 of the first inductor 1A, and the second end 52 of the transmission line 50 is connected to the second electrode 32 of the second inductor 1B. The shape of the transmission line 50 is not limited to this shape, and may be 5A to 5D The shape shown.

[0058] like Figure 5A As shown, the transmission line 50A is formed so as to intersect the straight line N connecting the first center M1 and the second center M2 when viewed from above. Specifically, the first end 51 of the transmission line 50A is connected to the second electrode 32 of the first inductor 1A, and the second end 52 of the transmission line 50A is connected to the first electrode 31 of the second inductor 1B. The first wire 61 is connected to the first electrode 31 of the first inductor 1A, and the second wire 62 is connected to the second electrode 32 of the second inductor 1B.

[0059] like Figure 5B As shown, the shape of the transmission line 50B is a shape having three sides when viewed from above, and the adjacent sides are orthogonal. As a result, the line length of the transmission line 50B can be extended. Figure 5C As shown in FIG, the shape of the transmission line 50C is U-shaped when viewed from above. Therefore, the transmission line 50C has no corners, so the characteristic impedance changes little. Figure 5D As shown, the shape of the transmission line 50D may be a meandering shape when viewed from above. This can further extend the line length of the transmission line 50D.

[0060] like Figure 2As shown, the first inductor 1A is connected between the first wire 61 and the transmission line 50, and the second inductor 1B is connected between the second wire 62 and the transmission line 50. The winding direction from the first wire 61 toward the transmission line 50 in the first inductor 1A is the same as the winding direction from the transmission line 50 toward the second wire 62 in the second inductor 1B. In other words, the winding direction of the wire 21 from the first flange 11 toward the second flange 12 in the first inductor 1A is the same as the winding direction of the wire 21 from the second flange 12 toward the first flange 11 in the second inductor 1B. This improves the coupling between the first inductor 1A and the second inductor 1B, resulting in higher attenuation characteristics.

[0061] Furthermore, the transmission line 50 does not intersect the straight line N connecting the first center M1 and the second center M2 in a plan view. This reduces the effect of the transmission line 50 on the magnetic flux crossing between the first inductor 1A and the second inductor 1B, thereby achieving higher attenuation characteristics.

[0062] Hereinafter, examples will be described.

[0063] In the first embodiment, as Figure 6A As shown, the shortest distance K between the first inductor 1A and the second inductor 1B is 0.3 mm when viewed from above. The transmission line 50 does not intersect the straight line N connecting the first center M1 and the second center M2 when viewed from above. That is, the transmission line 50 is connected to the second electrode 32 of the first inductor 1A and the second electrode 32 of the second inductor 1B. The winding direction from the first wire 61 in the first inductor 1A toward the transmission line 50 is clockwise (denoted as "R" in the figure; the same applies below). The winding direction from the transmission line 50 toward the second wire 62 in the second inductor 1B is also clockwise.

[0064] In the second embodiment, as Figure 6B As shown, the shortest distance K between the first inductor 1A and the second inductor 1B is 0.3 mm when viewed from above. The transmission line 50A intersects the straight line N connecting the first center M1 and the second center M2 when viewed from above. That is, the transmission line 50A is connected to the second electrode 32 of the first inductor 1A and the first electrode 31 of the second inductor 1B. The winding direction from the first wire 61 in the first inductor 1A toward the transmission line 50A is clockwise, while the winding direction from the transmission line 50A toward the second wire 62 in the second inductor 1B is also clockwise.

[0065] In the third embodiment, Figure 6CAs shown, the shortest distance K between the first inductor 1A and the second inductor 1B is 0.3 mm when viewed from above. The transmission line 50 does not intersect the straight line N connecting the first center M1 and the second center M2 when viewed from above. That is, the transmission line 50 is connected to the second electrode 32 of the first inductor 1A and the second electrode 32 of the second inductor 1B. The winding direction from the first wire 61 in the first inductor 1A toward the transmission line 50 is clockwise, while the winding direction from the transmission line 50 toward the second wire 62 in the second inductor 1B is counterclockwise (indicated by "L" in the figure; the same applies below).

[0066] In the fourth embodiment, Figure 6D As shown, the shortest distance K between the first inductor 1A and the second inductor 1B is 0.3 mm when viewed from above. The transmission line 50A intersects the straight line N connecting the first center M1 and the second center M2 when viewed from above. That is, the transmission line 50A is connected to the second electrode 32 of the first inductor 1A and the first electrode 31 of the second inductor 1B. The winding direction from the first wire 61 in the first inductor 1A toward the transmission line 50A is clockwise, while the winding direction from the transmission line 50A toward the second wire 62 in the second inductor 1B is counterclockwise.

[0067] Figure 7 The relationship between the frequency and S21 in the first to fourth embodiments is shown. Figure 7 As shown, the curve G11 of the first embodiment can obtain high attenuation characteristics in the low frequency domain compared with the curve G12 of the second embodiment, the curve G13 of the third embodiment, and the curve G14 of the fourth embodiment. In addition, the position of the high attenuation characteristics can be shifted to the low frequency side in the order of the curve G12 of the second embodiment, the curve G13 of the third embodiment, and the curve G14 of the fourth embodiment. In this way, in the first to fourth embodiments, due to the influence of the winding direction of the inductor and the configuration of the transmission line, the coupling degree is different, and as a result, it can be confirmed that the attenuation characteristics are different. In addition, the curves G11 to G14 of the first to fourth embodiments are different from Figure 4 Compared with the curve G0 of the comparative example shown, a high attenuation characteristic can be obtained in the low frequency range.

[0068] (Second embodiment)

[0069] Figure 8 This is a top view of an electronic component according to a second embodiment. The second embodiment differs from the first embodiment in the arrangement of the first and second inductors. This difference is described below. The remaining structures are identical to those of the first embodiment and are denoted by the same reference numerals as those of the first embodiment, and their descriptions are omitted.

[0070] like Figure 8As shown, in the electronic component of the second embodiment, the first central axis C1 of the first inductor 1A and the second central axis C2 of the second inductor 1B intersect at a predetermined angle θ when viewed from above. The angle θ is greater than 0° and less than 45°. This positions the first inductor 1A and the second inductor 1B in a positional relationship that facilitates magnetic coupling, thereby achieving enhanced attenuation characteristics.

[0071] Specifically, the first inductor 1A and the second inductor 1B are tilted so that their first flange portions 11 are close to each other and their second flange portions 12 are spaced apart. In this case, the first inductor 1A and the second inductor 1B overlap in a direction perpendicular to the first central axis C1 or the second central axis C2 when viewed from above. Furthermore, the distance between the first center M1 of the first inductor 1A and the second center M2 of the second inductor 1B is within 5 mm, which corresponds to the distance P defined in the first embodiment.

[0072] Furthermore, the first inductor 1A and the second inductor 1B are tilted so that their first flanges 11 are spaced apart and their second flanges 12 are close to each other. Here, too, the first central axis C1 and the second central axis C2 intersect at a predetermined angle θ in a plan view.

[0073] Furthermore, the present disclosure is not limited to the above-described embodiment, and design changes can be made within the scope of the present disclosure. For example, various combinations of the respective features of the first embodiment and the second embodiment are also possible.

[0074] In the above embodiment, two inductors are used in the electronic component, but the number of inductors may be increased. In the above embodiment, a winding inductor is used as the inductor, but a laminated inductor may also be used.

[0075] The winding directions of the first and second inductors can be clockwise or counterclockwise from the first electrode toward the second electrode, respectively. Furthermore, the winding directions of the first and second inductors can be positive relative to the extension direction of the transmission line.

[0076] Furthermore, the transmission line is not limited to being provided on the main surface of the substrate, but may also be provided inside the substrate. Furthermore, the line length between the first and second ends of the transmission line is the same as the shortest distance between the first and second ends, but may also be longer than the shortest distance.

Claims

1. An electronic component, characterized in that have: substrate; A first inductor and a second inductor are disposed on the main surface of the substrate; a transmission line, provided on the substrate, connecting the first inductor and the second inductor in series; and An input side signal line and an output side signal line are provided on the main surface of the substrate, The first inductor and the second inductor each include: The winding core is shaped to extend in a certain direction; a first flange portion and a second flange portion, wherein the first flange portion is provided at a first end of the winding core portion in an extending direction and extends in a direction perpendicular to the extending direction of the winding core portion, and the second flange portion is provided at a second end of the winding core portion in an extending direction and extends in a direction perpendicular to the extending direction of the winding core portion; a first electrode and a second electrode, the first electrode being provided on a surface of the first flange portion opposite to the main surface of the substrate, and the second electrode being provided on a surface of the second flange portion opposite to the main surface of the substrate; as well as a wire material wound around the winding core and electrically connected to the first electrode and the second electrode, The first electrode of the first inductor is connected to the input-side signal line, and the second electrode of the first inductor is connected to one end of the transmission line. The first electrode of the second inductor is connected to the output-side signal line, and the second electrode of the second inductor is connected to the other end of the transmission line. A first central axis of the first inductor passing through the center of the winding core portion in the direction in which the winding core portion extends and a second central axis of the second inductor passing through the center of the winding core portion in the direction in which the winding core portion extends are parallel to the main surface of the substrate, and when viewed from a direction perpendicular to the main surface of the substrate, the first central axis and the second central axis are not located on the same straight line. The first inductor and the second inductor are arranged at a distance such that they are magnetically coupled, and a distance between a first center constituting a length center of the first inductor along the first central axis and a second center constituting a length center of the second inductor along the second central axis is within 5 mm when viewed from a direction perpendicular to the main surface of the substrate. When viewed along the first central axis, the first inductor is located between the input-side signal line and the transmission line. When viewed along the second central axis, the second inductor is located between the output-side signal line and the transmission line. A winding direction of the wire from the input-side signal line toward the transmission line in the first inductor and a winding direction of the wire from the transmission line toward the output-side signal line in the second inductor are the same direction.

2. The electronic component according to claim 1, wherein The first inductor and the second inductor overlap when viewed from a direction parallel to the principal surface of the substrate and perpendicular to the first central axis or the second central axis.

3. The electronic component according to claim 2, wherein The first central axis and the second central axis are parallel to each other when viewed from a direction perpendicular to the main surface of the substrate.

4. The electronic component according to any one of claims 1 to 3, wherein The transmission line intersects a straight line connecting the first center of the first inductor and the second center of the second inductor when viewed from a direction perpendicular to the main surface of the substrate.

5. The electronic component according to any one of claims 1 to 3, wherein When viewed from a direction perpendicular to the main surface of the substrate, the transmission line does not intersect a straight line connecting the first center of the first inductor and the second center of the second inductor.

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