Filter and electronic component

Abstract

To provide a filter and an electronic component that can suppress changes in characteristics even in an environment where fluctuations in inductor components may occur in an electronic device in which it is mounted.SOLUTION: In an electronic component 1, the second end of a first LC parallel resonator R1 and the second end of a second LC parallel resonator R2 are connected at contacts P3 and P4, the capacitor C3 and the inductor L3 are connected in series to the contact P1, the capacitor C5 and the inductor L4 are connected in series to the contact P2, the capacitor C4 and the inductors L5 and L6 are connected in series to the contact P4, the capacitor C3 and the inductor L3, the capacitor C5 and the inductor L4, and the capacitor C4 and the inductors L5 and L6 are connected at contacts P6 and P7, and the inductors L7 and L8 are connected to the contacts P6 and P7.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a filter and an electronic component. [Background technology]

[0002] Patent Document 1 discloses a laminated low-pass filter formed by laminating and integrating a magnetic layer containing a coil and a dielectric layer containing a capacitor, in which two coils are connected in series, three grounded capacitors are connected between the connection point and both ends of the series coil, and three capacitance means are provided between the three points, namely the connection point and both ends of the series coil. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2002-204136 Summary of the Invention [Problem to be solved by the invention]

[0004] Electronic components are mounted on other electronic devices (for example, circuit boards, etc.). In electronic devices, wiring members arranged on the mounting surface on which the electronic components are mounted are electrically connected to other members arranged on other surfaces (layers) via through holes. In electronic devices, if a misalignment occurs in the position of a through hole in a wiring member connected to ground, the inductor component fluctuates. In an environment in which fluctuations in the inductor component occur in an electronic device, when a filter (electronic component) is mounted on the electronic device, the characteristics of the filter also change due to the influence of the fluctuations in the inductor component of the electrical device.

[0005] An object of one aspect of the present invention is to provide a filter and an electronic component that can suppress changes in characteristics even in an environment where fluctuations may occur in the inductor component of an electronic device in which they are mounted. [Means for solving the problem]

[0006] (1) A filter according to one aspect of the present invention includes a first input / output port, a second input / output port, a first LC parallel resonator and a second LC parallel resonator connected in series between the first input / output port and the second input / output port, a first capacitor, a second capacitor, and a third capacitor, a first inductor, a second inductor, and a grounded inductor connected to ground, wherein a first end of the first LC parallel resonator and the first input / output port are connected at a first junction, a first end of the second LC parallel resonator and the second input / output port are connected at a second junction, a second end of the first LC parallel resonator and a second end of the second LC parallel resonator are connected at a third junction, the first capacitor and the first inductor are connected in series to the first junction, the second capacitor and the second inductor are connected in series to the second junction, and the third capacitor and the third inductor are connected in series to the third junction, the first capacitor and the first inductor, the second capacitor and the second inductor, and the third capacitor and the third inductor are connected at a fourth junction, and the grounded inductor is connected to the fourth junction.

[0007] A filter according to one aspect of the present invention includes a first inductor, a second inductor, and a third inductor in addition to a grounded inductor. In the filter, the first inductor, the second inductor, and the third inductor are connected to the grounded inductor via a fourth contact. This increases the inductance component of the grounded inductor in the filter. Therefore, even in an environment where fluctuations in the inductance component may occur in an electronic device in which the filter is installed, the influence of such fluctuations on the filter can be reduced. Therefore, changes in the filter's characteristics can be suppressed.

[0008] (2) In the filter of (1), the third inductor may be configured to include two or more inductor components. With this configuration, the inductor components associated with the grounded inductor in the filter can be increased.

[0009] (3) In the filter of (1) or (2), the grounded inductor may be configured to include two or more inductor components. With this configuration, the inductor components of the grounded inductor in the filter can be increased.

[0010] (4) In the filter of any one of (1) to (3), the inductances of the first inductor, the second inductor, and the third inductor may be larger than the inductance of the grounded inductor. With this configuration, the inductance of the grounded inductor can be increased.

[0011] (5) An electronic component according to one aspect of the present invention comprises a base body having a main surface and a mounting surface facing each other, a plurality of terminal electrodes arranged on the base body, the plurality of terminal electrodes including a ground terminal electrode connected to ground, and a first grounded inductor conductor, a second grounded inductor conductor, a capacitor conductor, and a ground conductor arranged within the base body, wherein the first grounded inductor conductor is connected to the ground terminal electrode, the capacitor conductor and the ground conductor are arranged near the mounting surface, the first grounded inductor conductor is arranged between the ground conductor and the main surface in the opposing direction of the main surface and the mounting surface, the second grounded inductor conductor is arranged between the capacitor conductor and the mounting surface in the opposing direction of the main surface and the mounting surface, the first grounded inductor conductor and the second grounded inductor conductor are connected by a connecting conductor, and the ground conductor is connected to the first grounded inductor conductor.

[0012] In an electronic component according to one aspect of the present invention, a first grounded inductor conductor and a second grounded inductor conductor connected to a ground terminal electrode are connected by a connecting conductor, and the ground conductor is connected to the first grounded inductor conductor. Thus, by providing the first grounded inductor conductor and the second grounded inductor conductor, the electronic component increases the inductor component associated with the grounded inductor. Therefore, even in an environment where fluctuations in the inductor component may occur in an electronic device in which the electronic component is mounted, the electronic component can be less affected by such fluctuations. Therefore, the electronic component can suppress changes in its characteristics.

[0013] (6) In the electronic component of (5) above, the inductance of the second grounded inductor conductor may be greater than the inductance of the first grounded inductor conductor.

[0014] (7) In the electronic device of (5) or (6), the length of the second grounded inductor conductor may be longer than the length of the first grounded inductor conductor. In this configuration, the inductance of the second grounded inductor conductor can be made larger than the inductance of the first grounded inductor conductor.

[0015] (8) In the electronic component of any one of (5) to (7), two first grounded inductor conductors and two second grounded inductor conductors are provided, the connecting conductor has a first connecting conductor and a second connecting conductor, one first grounded inductor conductor and one second grounded inductor conductor are connected by the first connecting conductor, and the other first grounded inductor conductor and the other second grounded inductor conductor are connected by the second connecting conductor. With this configuration, the inductance component related to the grounded inductor can be increased.

[0016] (9) In the electronic component of (8) above, the capacitor conductor and the two first grounded inductor conductors may be integrally formed, the capacitor conductors may extend in one direction, one of the first grounded inductor conductors may be connected to one end of the capacitor conductor in the extending direction, and the other first grounded inductor conductor may be connected to the other end of the capacitor conductor in the extending direction, the first connecting conductor may be provided at one end of the capacitor conductor in the extending direction, and the second connecting conductor may be provided at the other end of the capacitor conductor in the extending direction.

[0017] (10) In the electronic device of (8) or (9), the two first grounded inductor conductors and the two second grounded inductor conductors may be arranged symmetrically. In this configuration, by symmetrically arranging the two first grounded inductor conductors and the two second grounded inductor conductors, it is possible to suppress variations in characteristics. [Effects of the Invention]

[0018] According to one aspect of the present invention, even in an environment where fluctuations may occur in the inductor component of an electronic device in which the device is mounted, changes in characteristics can be suppressed. [Brief explanation of the drawings]

[0019] [Figure 1] FIG. 1 is an equivalent circuit diagram of the electronic component according to the first embodiment. [Figure 2] FIG. 2 is a perspective view of the electronic component shown in FIG. [Figure 3] FIG. 3 is a perspective view of the electronic component shown in FIG. [Figure 4] FIG. 4 is a side view of the electronic component shown in FIG. [Figure 5] FIG. 5 is an end view of the electronic component shown in FIG. [Figure 6] FIG. 6 is an end view of the electronic component shown in FIG. [Figure 7] FIG. 7 is an exploded perspective view of the electronic component shown in FIG. [Figure 8]FIG. 8 is a perspective view of an electronic component according to the second embodiment. [Figure 9] FIG. 9 is a perspective view of the electronic component shown in FIG. DETAILED DESCRIPTION OF THE INVENTION

[0020] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the description of the drawings, the same or corresponding elements are designated by the same reference numerals, and redundant description will be omitted.

[0021] [First embodiment] 1 is an equivalent circuit diagram of an electronic component according to a first embodiment. Electronic component 1 includes an input port (first input / output port) IN to which a signal is input, an output port (second input / output port) OUT to which a signal is output, inductor L1, inductor L2, inductor (first inductor) L3, inductor (second inductor) L4, inductor (third inductor) L5, inductor (third inductor) L6, inductor (grounded inductor) L7, inductor (grounded inductor) L8, capacitor C1, capacitor C2, capacitor (first capacitor) C3, capacitor (third capacitor) C4, and capacitor (second capacitor) C5. Electronic component 1 is, for example, a low-pass filter.

[0022] Inductor L1 and inductor L2 are electrically connected in series. Capacitor C1 and capacitor C2 are electrically connected in series. Inductor L1 and capacitor C1 are electrically connected in parallel. Inductor L2 and capacitor C2 are electrically connected in parallel. Capacitor C3, capacitor C4, and capacitor C5 are electrically connected in parallel. Inductor L3, inductor L4, inductor L5, and inductor L6 are electrically connected in parallel. Inductor L5 and inductor L7 are electrically connected in series. Inductor L6 and inductor L8 are electrically connected in series. Inductor L3 and capacitor C3 are electrically connected in series. Inductor L4 and capacitor C5 are electrically connected in series. Inductor L5 and capacitor C4 are electrically connected in series. Inductor L6 and capacitor C4 are electrically connected in series.

[0023] The inductor L1 and the capacitor C1 form a first LC parallel resonator R1. The inductor L2 and the capacitor C2 form a second LC parallel resonator R2. The inductors L3, L4, L5, L6, L7, and L8 form a grounded inductor Lg. In this embodiment, the grounded inductor Lg does not include inductors formed of wiring members or the like.

[0024] A first end (end on the input port IN side) of the first LC parallel resonator R1 is connected to a contact (first contact) P1. The contact P1 is a connection point with the input port IN. That is, the input port IN and the first LC parallel resonator R1 are connected via the contact P1. In this embodiment, being connected via the contact P1 means that no other elements are present between the input port IN and the first LC parallel resonator R1. The first end of the first LC parallel resonator R1 is the end of the first LC parallel resonator R1 closest to the input port IN.

[0025] A first end (end on the output port OUT side) of the second LC parallel resonator R2 is connected to a contact point (second contact point) P2. The contact point P2 is a connection point with the output port OUT. That is, the output port OUT and the second LC parallel resonator R2 are connected via the contact point P2. The first end of the second LC parallel resonator R2 is the end of the second LC parallel resonator R2 closest to the output port OUT.

[0026] A second end of the first LC parallel resonator R1 (the end of the inductor L1) is connected to a contact point (third contact point) P3. A second end of the second LC parallel resonator R2 (the end of the inductor L2) is connected to a contact point P3. The contact point P3 is a connection point between the first LC parallel resonator R1 and the second LC parallel resonator R2. A second end of the first LC parallel resonator R1 (the end of the capacitor C1) is connected to a contact point (third contact point) P4. A second end of the second LC parallel resonator R2 (the end of the capacitor C2) is connected to a contact point P4. The contact point P4 is a connection point between the first LC parallel resonator R1 and the second LC parallel resonator R2.

[0027] A first end of capacitor C3 is connected to contact P1. A second end of capacitor C3 is connected to a first end of inductor L3. A first end of capacitor C4 is connected to contact P4. A second end of capacitor C4 is connected to contact P5. Contact P5 is a connection point between capacitor C4 and inductors L5 and L6. A first end of capacitor C5 is connected to contact P2. A second end of capacitor C5 is connected to a first end of inductor L4.

[0028] A first end of inductor L3 is connected to the second end of capacitor C3. A second end of inductor L3 is connected to contact (fourth contact) P6. Contact P6 is a connection point between inductor L3 and inductors L5 and L7. A first end of inductor L4 is connected to the second end of capacitor C5. A second end of inductor L4 is connected to contact (fourth contact) P7. Contact P7 is a connection point between inductor L4 and inductors L6 and L8. A first end of inductor L5 is connected to contact P5. A second end of inductor L5 is connected to contact P6. A first end of inductor L6 is connected to contact P5. A second end of inductor L6 is connected to contact P7.

[0029] A first end of inductor L7 is connected to contact P6. A second end of inductor L7 is connected to ground Gnd1. A first end of inductor L8 is connected to contact P7. A second end of inductor L8 is connected to ground Gnd2.

[0030] In the electronic component 1, the capacitor C3 and the inductor L4, and the capacitor C4 and the inductor L5 are electrically connected at a contact point P6 (joined at the contact point P6) and connected to an inductor L7. In the electronic component 1, the capacitor C5 and the inductor L4, and the capacitor C4 and the inductor L6 are electrically connected at a contact point P7 and connected to an inductor L8.

[0031] The inductances of the inductors L3, L4, L5 and L6 are greater than the inductances of the inductors L7 and L8.

[0032] Fig. 2 is a perspective view of the electronic component shown in Fig. 1. Fig. 3 is a perspective view of the electronic component shown in Fig. 1. Fig. 4 is a side view of the electronic component shown in Fig. 1. Fig. 5 is an end view of the electronic component shown in Fig. 1. Fig. 6 is an end view of the electronic component shown in Fig. 1. As shown in Figs. 2 to 6, the electronic component 1 includes an element body 2, and a first terminal electrode 3, a second terminal electrode 4, a third terminal electrode 5, a fourth terminal electrode 6, a fifth terminal electrode 7, and a sixth terminal electrode 8 arranged at both ends of the element body 2, respectively.

[0033] The element body 2 has a rectangular parallelepiped shape. The rectangular parallelepiped shape includes a rectangular parallelepiped shape with chamfered corners and ridges, and a rectangular parallelepiped shape with rounded corners and ridges. The element body 2 has, as its outer surfaces, a pair of end faces 2a, 2b facing each other, a pair of main faces 2c, 2d facing each other, and a pair of side faces 2e, 2f facing each other. The facing direction in which the pair of end faces 2a, 2b face each other is a first direction D1. The facing direction in which the pair of main faces 2c, 2d face each other is a second direction D2. The facing direction in which the pair of side faces 2e, 2f face each other is a third direction D3.

[0034] In this embodiment, the first direction D1 is the longitudinal direction of the element body 2. The second direction D2 is the height direction of the element body 2 and is perpendicular to the second direction D2. The third direction D3 is the width direction of the element body 2 and is perpendicular to the second direction D2 and the first direction D1.

[0035] The pair of end faces 2a, 2b extend in the second direction D2 to connect the pair of principal faces 2c, 2d together. The pair of end faces 2a, 2b also extend in the third direction D3 (the direction of the short sides of the pair of principal faces 2c, 2d). The pair of side faces 2e, 2f extend in the second direction D2 to connect the pair of principal faces 2c, 2d together. The pair of side faces 2e, 2f also extend in the first direction D1 (the direction of the long sides of the pair of end faces 2a, 2b). The principal face 2d can be defined as a mounting surface that faces another electronic device (for example, a circuit board or electronic component) when the electronic component 1 is mounted on the other electronic device.

[0036] The element body 2 is constructed by laminating multiple dielectric layers 9 (see FIG. 7). Each dielectric layer 9 is laminated in the second direction D2. That is, the second direction D2 is the lamination direction. The element body 2 has multiple laminated dielectric layers 9. Each dielectric layer 9 is constructed, for example, from a sintered ceramic green sheet containing a dielectric material (dielectric ceramic such as BaTiO3-based, Ba(Ti,Zr)O3-based, or (Ba,Ca)TiO3-based). In an actual element body 2, the multiple dielectric layers 9 are integrated to the extent that the boundaries between the layers are not visible.

[0037] The first terminal electrode 3, the second terminal electrode 4, and the third terminal electrode 5 are arranged on the side surface 2e side of the element body 2. The first terminal electrode 3, the second terminal electrode 4, and the third terminal electrode 5 are formed so as to cover part of the side surface 2e along the second direction D2 of the element body 2, and are also formed on part of the main surface 2c and part of the main surface 2d. The first terminal electrode 3 is located on the end surface 2a side, and the third terminal electrode 5 is located on the end surface 2b side. The second terminal electrode 4 is located between the first terminal electrode 3 and the third terminal electrode 5.

[0038] The fourth terminal electrode 6, the fifth terminal electrode 7, and the sixth terminal electrode 8 are arranged on the side surface 2f of the element body 2. The fourth terminal electrode 6, the fifth terminal electrode 7, and the sixth terminal electrode 8 are formed so as to cover part of the side surface 2f along the second direction D2 of the element body 2, and are also formed on part of the main surface 2c and part of the main surface 2d. The fourth terminal electrode 6 is located on the end surface 2a side, and the sixth terminal electrode 8 is located on the end surface 2b side. The fifth terminal electrode 7 is located between the fourth terminal electrode 6 and the sixth terminal electrode 8.

[0039] The first terminal electrode 3, the second terminal electrode 4, the third terminal electrode 5, the fourth terminal electrode 6, the fifth terminal electrode 7, and the sixth terminal electrode 8 contain a conductive material (for example, Ag or Pd). The first terminal electrode 3, the second terminal electrode 4, the third terminal electrode 5, the fourth terminal electrode 6, the fifth terminal electrode 7, and the sixth terminal electrode 8 are configured as a sintered body of a conductive paste containing a conductive material (for example, Ag powder or Pd powder). A plating layer may be formed on the surface of the first terminal electrode 3, the second terminal electrode 4, the third terminal electrode 5, the fourth terminal electrode 6, the fifth terminal electrode 7, and the sixth terminal electrode 8. The plating layer is formed, for example, by electroplating. The plating layer has a layer structure consisting of a Cu plating layer, a Ni plating layer, and a Sn plating layer, or a layer structure consisting of a Ni plating layer and a Sn plating layer.

[0040] The second terminal electrode 4 constitutes an output port OUT (see FIG. 1). The fourth terminal electrode 6 constitutes a ground Gnd1 (see FIG. 1). The fifth terminal electrode 7 constitutes an input port IN (see FIG. 1). The sixth terminal electrode 8 constitutes a ground Gnd2 (see FIG. 1). The fourth terminal electrode 6 and the sixth terminal electrode 8 are ground terminal electrodes connected to the ground of the electronic device.

[0041] Fig. 7 is an exploded perspective view of the electronic component 1. As shown in Fig. 7, the electronic component 1 includes an inductor conductor 10, an inductor conductor 11, an inductor conductor 12, an inductor conductor 13, an inductor conductor 14, an inductor conductor 15, an inductor conductor 16, an inductor conductor 17, an inductor conductor 18, an inductor conductor 19, a via conductor 20, a via conductor 21, a via conductor 22, a via conductor 23, a via conductor 24, a via conductor 25, a via conductor 26, a via conductor 27, a via conductor 28, a via conductor 29, a via conductor 30, a via conductor 31, a via conductor 32, a capacitor conductor 33, a capacitor conductor 34, a capacitor conductor 35, a conductor 36, and a conductor 37.

[0042] Inductor conductor 10 and inductor conductor 11 are arranged on the same dielectric layer 9. Inductor conductor 12 and inductor conductor 13 are arranged on the same dielectric layer 9. Inductor conductor 14 and inductor conductor 15 are arranged on the same dielectric layer 9. Inductor conductor 16 and inductor conductor 17 are arranged on the same dielectric layer 9. Via conductor 27, via conductor 28, and capacitor conductor 33 are arranged on the same dielectric layer 9. Via conductor 29, via conductor 30, capacitor conductor 34, and capacitor conductor 35 are arranged on the same dielectric layer 9. Via conductor 31 and via conductor 32 are arranged on the same dielectric layer 9. Via conductor 26 and conductor 36 are arranged on the same dielectric layer 9.

[0043] In this embodiment, the inductor conductors 10 and 12 have the same shape. The inductor conductors 11 and 13 have the same shape. The inductor conductors 14 and 16 have the same shape. The inductor conductors 15 and 17 have the same shape. The inductor conductors 18 and 19 have the same shape.

[0044] Inductor conductor 10, inductor conductor 11, inductor conductor 12, inductor conductor 13, inductor conductor 14, inductor conductor 15, inductor conductor 16, inductor conductor 17, inductor conductor 18, and inductor conductor 19 are arranged at positions closer to the principal surface 2c (positions closer to the principal surface 2c) in the element body 2. Specifically, inductor conductor 10, inductor conductor 11, inductor conductor 12, inductor conductor 13, inductor conductor 14, inductor conductor 15, inductor conductor 16, inductor conductor 17, inductor conductor 18, and inductor conductor 19 are arranged in a region closer to the principal surface 2c than the center of the element body 2 in the second direction D2.

[0045] The capacitor conductor 33, the capacitor conductor 34, the capacitor conductor 35, the conductor 36, and the conductor 37 are arranged at positions closer to the principal surface 2d (positions close to the principal surface 2d) in the element body 2. Specifically, the capacitor conductor 33, the capacitor conductor 34, the capacitor conductor 35, the conductor 36, and the conductor 37 are arranged in a region closer to the principal surface 2d than the center of the element body 2 in the second direction D2.

[0046] The conductor 36, the capacitor conductor 33, the capacitor conductor 34 (capacitor conductor 35), and the conductor 37 are arranged in this order in the second direction D2 from the principal surface 2c toward the principal surface 2d. The conductor 36 is arranged between the principal surface 2c and the conductor 37 in the second direction D2. The conductor 37 is arranged between the principal surface 2d and the conductor 36 in the second direction D2.

[0047] The conductor 36 has a first conductor portion 36A, a second conductor portion (first grounded inductor conductor, one first grounded inductor conductor) 36B, and a third conductor portion (first grounded inductor conductor, the other first grounded inductor conductor) 36C. The first conductor portion 36A, the second conductor portion 36B, and the third conductor portion 36C are integrally formed. In this embodiment, the conductor 36 has a channel shape (approximately a U-shape). The conductor 36 has a symmetrical shape (a shape having a symmetrical relationship). The conductor 36 has line symmetry with respect to a line along the third direction D3.

[0048] The first conductor portion 36A has a rectangular (strip) shape and extends along the first direction D1. The first conductor portion 36A functions as an inductor conductor and a capacitor conductor. The second conductor portion 36B is connected to one end portion (the end portion on the end face 2a side) of the first conductor portion 36A. The second conductor portion 36B has a rectangular shape and extends along the third direction D3. The third conductor portion 36C is connected to the other end portion (the end portion on the end face 2b side) of the first conductor portion 36A. The third conductor portion 36C has a rectangular shape and extends along the third direction D3.

[0049] The conductor 37 has a first conductor portion 37A, a second conductor portion (second ground inductor conductor, one second ground inductor conductor) 37B, and a third conductor portion (second ground inductor conductor, the other second ground inductor conductor) 37C. The first conductor portion 37A, the second conductor portion 37B, and the third conductor portion 37C are integrally formed. The conductor 37 has a symmetrical shape. The conductor 37 has line symmetry with respect to a line along the third direction D3.

[0050] The first conductor 37A has a rectangular shape. The first conductor 37A functions as a ground conductor. The second conductor 37B extends from the end of the first conductor 37A on the end face 2a side. The third conductor 37C extends from the end of the first conductor 37A on the end face 2b side.

[0051] The length (path length) of the second conductor 37B is longer than the length of the second conductor 36B. In other words, the length of the second conductor 36B is shorter than the length of the second conductor 37B. The length of the third conductor 37C is longer than the length of the third conductor 36C. In other words, the length of the third conductor 36C is shorter than the length of the third conductor 37C.

[0052] The inductor conductor 10 is exposed at the side surface 2f and connected to the fifth terminal electrode 7. The inductor conductor 11 is exposed at the side surface 2e and connected to the second terminal electrode 4. The inductor conductor 12 is exposed at the side surface 2f and connected to the fifth terminal electrode 7. The inductor conductor 13 is exposed at the side surface 2e and connected to the second terminal electrode 4.

[0053] The capacitor conductor 34 is exposed at the side surface 2f and connected to the fifth terminal electrode 7. The capacitor conductor 35 is exposed at the side surface 2e and connected to the second terminal electrode 4. The second conductor portion 36B is exposed at the side surface 2f and connected to the fourth terminal electrode 6. The third conductor portion 36C is exposed at the side surface 2f and connected to the sixth terminal electrode 8.

[0054] Inductor conductor 10, inductor conductor 12, inductor conductor 14, inductor conductor 16, inductor conductor 18, and inductor conductor 19 form inductor L1. Inductor conductor 11, inductor conductor 13, inductor conductor 15, inductor conductor 17, inductor conductor 18, and inductor conductor 19 form inductor L2. The second conductor portion 37B forms inductor L3. The third conductor portion 37C forms inductor L4. The first conductor portion 36A forms inductor L5. The first conductor portion 36A forms inductor L6. The second conductor portion 36B forms inductor L7. The third conductor portion 36C forms inductor L8. The first conductor portion 36A forms two inductor components (inductor L5 and inductor L6).

[0055] The capacitor conductor 33 and the capacitor conductor 34 form a capacitor C1. The capacitor conductor 33 and the capacitor conductor 35 form a capacitor C2. The capacitor conductor 34 and the first conductor portion 37A form a capacitor C3. The capacitor conductor 33 and the first conductor portion 36A form a capacitor C4. The capacitor conductor 35 and the first conductor portion 37A form a capacitor C5.

[0056] The via conductor 20, the via conductor 21, the via conductor 22, the via conductor 23, the via conductor 24, the via conductor 25, and the via conductor 26 form a connecting conductor 38. The connecting conductor 38 electrically connects the inductor conductor 19 and the capacitor conductor 33.

[0057] The via conductors 27, 29, and 31 constitute a first connecting conductor (connecting conductor) 39. The first connecting conductor 39 electrically connects the conductors 36 and 37. The first connecting conductor 39 connects one end of the first conductor portion 36A of the conductor 36 in the extension direction (the end on the end face 2a side of the element body 2) to an end of the second conductor portion 37B of the conductor 37 (the tip end opposite to the base end connected to the first conductor portion 37A).

[0058] The via conductors 28, 30, and 32 constitute a second connecting conductor (connecting conductor) 40. The second connecting conductor 40 electrically connects the conductor 36 and the conductor 37. The second connecting conductor 40 connects the other end of the first conductor portion 36A of the conductor 36 in the extension direction (the end on the end face 2b side of the element body 2) to an end of the third conductor portion 37C of the conductor 37 (the tip end opposite to the base end connected to the first conductor portion 37A).

[0059] The conductors 36 and 37 are connected by the first connecting conductor 39 and the second connecting conductor 40, and are thereby electrically connected to the fourth terminal electrode 6 and the sixth terminal electrode 8. The fourth terminal electrode 6 and the sixth terminal electrode 8 are mounted on land electrodes connected to the ground in the electronic device. As a result, when the electronic component 1 is mounted on the electronic device, the conductors 36 and 37 are connected to the ground of the electrical device. As a result, in the electronic component 1, the first conductor portion 36A, the second conductor portion 36B, the third conductor portion 36C, the second conductor portion 37B, and the third conductor portion 37C function as a ground inductor Lg (see FIG. 1 ).

[0060] As described above, the electronic component 1 according to this embodiment includes inductors L3, L4, L5, and L6 in addition to inductors L7 and L8. In the electronic component 1, inductors L3 and L5 are connected to inductor L7 via contact P6. In the electronic component 1, inductors L4 and L6 are connected to inductor L8 via contact P7. This increases the inductor component of the grounded inductor Lg in the electronic component 1. Therefore, even in an environment where fluctuations in the inductor component may occur in an electronic device in which the electronic component 1 is mounted, the electronic component 1 can be less affected by such fluctuations. Therefore, the electronic component 1 can suppress changes in its characteristics.

[0061] [Second embodiment] Next, a second embodiment will be described. Fig. 8 is a perspective view of an electronic component according to the second embodiment. Fig. 9 is a perspective view of the electronic component shown in Fig. 8. As shown in Figs. 8 and 9, an electronic component 1A includes an element body 2, and a first terminal electrode 3, a second terminal electrode 4, a third terminal electrode 5, a fourth terminal electrode 6, a fifth terminal electrode 7, and a sixth terminal electrode 8 arranged at both ends of the element body 2, respectively.

[0062] Electronic component 1A differs from electronic component 1 in the configuration of conductors 36 and 37. In electronic component 1, conductor 36 has a first conductor portion 36A and a second conductor portion 36B. That is, in electronic component 1A, conductor 36 does not have the third conductor portion 36C that electronic component 1 has. Conductor 37 has a first conductor portion 37A and a second conductor portion 37B. That is, in electronic component 1A, conductor 37 does not have the third conductor portion 37C that electronic component 1 has. Conductors 36 and 37 are connected by a single first connecting conductor 39.

[0063] As described above, the electronic component 1A according to this embodiment also includes inductor L3 and inductor L5 in addition to inductor L7. In the electronic component 1A, inductor L3 and inductor L5 are connected to inductor L7 via contact P6. This increases the inductor component of the grounded inductor Lg in the electronic component 1A. Therefore, even in a situation where fluctuations in the inductor component may occur in an electronic device in which the electronic component 1A is mounted, the electronic component 1A can reduce the influence of such fluctuations. Therefore, the electronic component 1A can suppress changes in its characteristics.

[0064] Although the embodiments of the present invention have been described above, the present invention is not necessarily limited to the above-described embodiments, and various modifications are possible without departing from the spirit of the present invention.

[0065] In the above embodiment, the conductor 36 has a channel shape. However, the shape of the conductor 36 is not limited to this. The same applies to the shape of the conductor 37.

[0066] In the above embodiment, the fourth terminal electrode 6 and the sixth terminal electrode 8 are ground terminal electrodes connected to the ground. However, the first terminal electrode 3 and the third terminal electrode 5 may be ground terminal electrodes.

[0067] In the above embodiment, the inductor L1 is formed by the inductor conductors 10, 12, 14, 16, 18, and 19. However, the number and shape of the inductor conductors forming the inductor L1 are not limited to these. The same applies to the inductor L2.

[0068] In the above embodiment, a configuration has been described in which a portion of each of the first terminal electrode 3, the second terminal electrode 4, the third terminal electrode 5, the fourth terminal electrode 6, the fifth terminal electrode 7, and the sixth terminal electrode 8 is formed on the principal surface 2c and the principal surface 2d. However, the first terminal electrode 3, the second terminal electrode 4, the third terminal electrode 5, the fourth terminal electrode 6, the fifth terminal electrode 7, and the sixth terminal electrode 8 may be formed only on the side surfaces 2e and 2f. [Explanation of symbols]

[0069] 1, 1A...electronic component, 2...element body, 2c...main surface, 2d...main surface (mounting surface), 36A...first conductor portion (capacitor conductor), 36B...second conductor portion (first ground inductor conductor), 36C...third conductor portion (first ground inductor conductor), 37A...first conductor portion (ground conductor), 37B...second conductor portion (second ground inductor conductor), 37C...third conductor portion (second ground inductor conductor), 39...first connecting conductor (connecting conductor), 40...second connecting conductor (connecting conductor), C3...capacitor (first capacitor), C4...capacitor (third capacitor) ), C5...capacitor (second capacitor), IN...input port (first input / output port), L3...inductor (first inductor), L4...inductor (second inductor), L5, L6...inductor (third inductor), L7, L8...inductor (grounded inductor), Lg...grounded inductor, OUT...output port (second input / output port), P1...contact (first contact), P2...contact (second contact), P3, P4...contact (third contact), P6, P7...contact (fourth contact), R1...first LC parallel resonator, R2...second LC parallel resonator.

Claims

1. a first input / output port; a second input / output port; a first LC parallel resonator and a second LC parallel resonator connected in series between the first input / output port and the second input / output port; a first capacitor, a second capacitor, and a third capacitor; a first inductor, a second inductor, and a third inductor; a grounded inductor connected to ground, a first end of the first LC parallel resonator and the first input / output port are connected at a first contact point; a first end of the second LC parallel resonator and the second input / output port are connected at a second contact point; a second end of the first LC parallel resonator and a second end of the second LC parallel resonator are connected to each other at a third junction; the first capacitor and the first inductor are connected in series to the first contact point; the second capacitor and the second inductor are connected in series to the second contact; the third capacitor and the third inductor are connected in series to the third contact point; the first capacitor and the first inductor, the second capacitor and the second inductor, and the third capacitor and the third inductor are connected at a fourth junction; The filter, wherein the grounded inductor is connected to the fourth contact.

2. The filter according to claim 1 , wherein the third inductor is configured to include two or more inductor components.

3. 3. The filter according to claim 1, wherein the grounded inductor is configured to include two or more inductor components.

4. 3. The filter according to claim 1, wherein the inductances of the first inductor, the second inductor, and the third inductor are greater than the inductance of the grounded inductor.

5. an element body having a main surface and a mounting surface facing each other; a plurality of terminal electrodes disposed on the element body, the plurality of terminal electrodes including a ground terminal electrode connected to ground; a first grounded inductor conductor, a second grounded inductor conductor, a capacitor conductor, and a ground conductor, which are arranged within the element body; the first grounded inductor conductor is connected to the ground terminal electrode; the capacitor conductor and the ground conductor are disposed near the mounting surface, the first ground inductor conductor is disposed between the ground conductor and the main surface in a direction in which the main surface and the mounting surface oppose each other, the second ground inductor conductor is disposed between the capacitor conductor and the mounting surface in the opposing direction between the principal surface and the mounting surface, the first grounded inductor conductor and the second grounded inductor conductor are connected by a connecting conductor; The ground conductor is connected to the first ground inductor conductor.

6. The electronic component according to claim 5 , wherein the inductance of the second grounded inductor conductor is greater than the inductance of the first grounded inductor conductor.

7. The electronic component according to claim 5 or 6, wherein the second grounded inductor conductor has a length longer than the first grounded inductor conductor.

8. the first grounded inductor conductor and the second grounded inductor conductor are provided in pairs, the connecting conductor includes a first connecting conductor and a second connecting conductor; one of the first grounded inductor conductors and one of the second grounded inductor conductors are connected by the first connecting conductor, The electronic component according to claim 5 or 6, wherein the other first grounded inductor conductor and the other second grounded inductor conductor are connected by the second connecting conductor.

9. the capacitor conductor and the two first grounded inductor conductors are integrally formed; the capacitor conductor extends in one direction, one of the first grounded inductor conductors is connected to one end of the capacitor conductor in the extending direction, the other first grounded inductor conductor is connected to the other end of the capacitor conductor in the extending direction, the first connection conductor is provided at the one end of the capacitor conductor in the extending direction, The electronic component according to claim 8 , wherein the second connection conductor is provided at the other end of the capacitor conductor in the extending direction.

10. The electronic component according to claim 9 , wherein the two first grounded inductor conductors and the two second grounded inductor conductors are arranged in a symmetrical relationship.

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