Composite Electronic Components

Abstract

To provide a composite electronic component capable of suppressing a magnetic field coupling between lines for forming a resonant circuit.SOLUTION: A composite electronic component includes: a multilayered body 10 in which a plurality of dielectric layers 11a to 11i and a plurality of conductor layers 12a are alternately stacked; a first resonant circuit including a first line and a first capacitor, the first line being formed of one or more first conductor layers 12x of the plurality of conductor layers, the first capacitor including a first electrode formed of a plurality of second conductor layers 12y of the plurality of conductor layers; and a second resonant circuit including a second line and a second capacitor, the second line being formed of one or more third conductor layers 12z of the plurality of conductor layers, the second capacitor including a second electrode formed of the plurality of second conductor layers. The second conductor layers are located between the one or more first conductor layers and the one or more third conductor layers.SELECTED DRAWING: Figure 4

Description

[Technical field]

[0001] The present invention relates to a composite electronic component, for example, a composite electronic component in which dielectric layers are laminated. [Background technology]

[0002] A filter or a multiplexer having multiple filters that removes unnecessary interference waves is used in wireless communication terminals such as smartphones. A filter or multiplexer having multiple resonant circuits, each having a line corresponding to an inductor and a capacitor, is known in a laminate of laminated dielectric layers (e.g., Patent Documents 1 to 3). It is known to adjust the arrangement of multiple lines in a dielectric layer in order to control the magnetic field coupling between the lines of multiple resonant circuits (e.g., Patent Document 2). It is known to provide multiple lines in different dielectric layers (e.g., Patent Document 3). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2019-79865 A [Patent Document 2] International Publication No. 2012 / 066946 [Patent Document 3] International Publication No. 2012 / 077498 Summary of the Invention [Problem to be solved by the invention]

[0004] As the composite electronic component becomes smaller, the magnetic field coupling between the lines becomes stronger. For example, if the shape of the lines becomes spiral due to the miniaturization of the composite electronic component, the magnetic field coupling between the lines becomes stronger. This makes it difficult to design the resonant frequency of the resonant circuit to a desired value.

[0005] The present invention has been made in consideration of the above-mentioned problems, and has an object to suppress magnetic field coupling between lines that form a resonant circuit. [Means for solving the problem]

[0006] The present invention is a composite electronic component comprising: a first resonant circuit including a laminate in which a plurality of dielectric layers and a plurality of conductor layers are alternately stacked; a first line formed by one or more first conductor layers of the plurality of conductor layers; and a first capacitor including a first electrode formed by a plurality of second conductor layers of the plurality of conductor layers; and a second resonant circuit including a second line formed by one or more third conductor layers of the plurality of conductor layers and a second capacitor including a second electrode formed by the plurality of second conductor layers, wherein the plurality of second conductor layers are located between the one or more first conductor layers and the one or more third conductor layers.

[0007] In the above configuration, the inverter may be configured to include an input terminal and an output terminal, and the first resonant circuit and the second resonant circuit may be parallel resonant circuits shunt-connected between the input terminal and the output terminal.

[0008] In the above configuration, the configuration may include a third resonant circuit which is a parallel resonant circuit shunt-connected between the input terminal and the output terminal, the third resonant circuit including a third line formed by the one or more third conductive layers and a third capacitor including a third electrode formed by the multiple second conductive layers, and a fourth resonant circuit which is a parallel resonant circuit shunt-connected between the input terminal and the output terminal, the fourth resonant circuit including a fourth line formed by the one or more first conductive layers and a fourth capacitor including a fourth electrode formed by the multiple second conductive layers.

[0009] In the above configuration, of the first resonant circuit, the second resonant circuit, the third resonant circuit, and the fourth resonant circuit, the first resonant circuit can be the resonant circuit that is electrically closest to the input terminal, and the fourth resonant circuit can be the resonant circuit that is electrically closest to the output terminal.

[0010] In the above configuration, the one or more first conductive layers are connected to a surface of the laminate on which the input terminal and the output terminal are provided and to the Multiple It may be configured to be located between the first conductive layer and the second conductive layer.

[0011] In the above configuration, when viewed from a stacking direction of the multiple dielectric layers and the multiple conductor layers, at least a portion of the first line overlaps with at least a portion of the second line, at least a portion of the first line overlaps with at least a portion of the first electrode and the second electrode, and at least a portion of the second line overlaps with at least a portion of the first electrode and the second electrode.

[0012] In the above configuration, at least one of the first line and the second line may be configured to have a spiral shape.

[0013] The above configuration may further include a filter including the first resonant circuit and the second resonant circuit.

[0014] The above configuration may further include a multiplexer including the filter. Effect of the Invention

[0015] According to the present invention, it is possible to suppress magnetic field coupling between lines forming a resonant circuit. [Brief description of the drawings]

[0016] [Figure 1] FIG. 1 is a circuit diagram of a filter in accordance with a first embodiment. [Diagram 2] FIG. 2 is a diagram illustrating the transmission characteristics and reflection characteristics of the filter in the first embodiment. [Diagram 3] 3(a) and 3(b) are perspective views of the filter according to the first embodiment. [Figure 4] FIG. 4 is a cross-sectional view of the filter according to the first embodiment. [Diagram 5] FIG. 5 is an exploded perspective view of the filter according to the first embodiment. [Figure 6] FIG. 6 is an exploded perspective view of the filter according to the first embodiment. [Figure 7] 7(a) to 7(e) are plan views showing the dielectric layers and conductive layers of the filter in accordance with the first embodiment. [Figure 8] 8(a) to 8(f) are plan views showing the dielectric layers and conductive layers of the filter in accordance with the first embodiment. [Figure 9] FIG. 9 is a circuit diagram of a triplexer in accordance with the second embodiment. [Figure 10] FIG. 10 is a circuit diagram of a communication module according to a first modified example of the second embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0017] Hereinafter, embodiments of the present invention will be described with reference to the drawings. EXAMPLES

[0018] A bandpass filter (BPF) will be described as an example of the composite electronic component according to the first embodiment. FIG. 1 is a circuit diagram of the filter according to the first embodiment. As shown in FIG. 1, in a filter 100, parallel resonant circuits PR1 to PR4 are shunt-connected between an input terminal Tin and an output terminal Tout. The parallel resonant circuit PR1 has a line SL1 and a capacitor C1 connected in parallel between a node N1 and a ground terminal Tg. The parallel resonant circuit PR2 has a line SL2 and a capacitor C2 connected in parallel between a node N2 and a ground terminal Tg. The parallel resonant circuit PR3 has a line SL3 and a capacitor C3 connected in parallel between a node N3 and a ground terminal Tg. The parallel resonant circuit PR4 has a line SL4 and a capacitor C4 connected in parallel between a node N4 and a ground terminal Tg.

[0019] Nodes N1 and N2 are connected via a capacitor C5, and nodes N3 and N4 are connected via a capacitor C6. Nodes N1 and N4 are connected via capacitors C7 and C8, not via nodes N2 and N3. Lines SL2 and SL3 are connected via a line SL5. Lines SL1 to SL5 are transmission lines such as strip lines.

[0020] FIG. 2 is a diagram showing the pass characteristic and the reflection characteristic of the filter in the first embodiment. As shown in FIG. 2, the pass characteristic S21 of the filter 100 between the input terminal Tin and the output terminal Tout has a pass band Pass and attenuation poles A1 to A4. The attenuation poles A1 and A2 are lower than the pass band Pass, and the attenuation poles A3 and A4 are higher than the pass band Pass. The attenuation poles A1 to A4 are mainly formed by the resonance frequencies of the parallel resonance circuits PR1 to PR4. The reflection characteristic S11 in the pass band Pass is small, and the reflection characteristic S11 in bands other than the pass band Pass is large. As a result, the high-frequency signal in the pass band Pass among the high-frequency signals input to the input terminal Tin passes from the input terminal Tin to the output terminal Tout via the capacitors C7 and C8, the capacitors C5 and C6, and the line SL5. Signals of frequencies other than the pass band Pass are suppressed.

[0021] In order to design the pass characteristic of the filter 100 to a desired characteristic, it is important to determine the frequencies of the attenuation poles A1 to A4. However, as shown in Fig. 1, the lines SL1 and SL2 are magnetically coupled by M1, and the lines SL3 and SL4 are magnetically coupled by M2. This makes it difficult to design the attenuation poles A1 to A4 to have desired frequencies. In the first embodiment, the magnetic field couplings M1 and M2 are made small, making it easy to set the frequencies of the attenuation poles A1 to A4.

[0022] 3(a) and 3(b) are perspective views of a filter according to Example 1. As shown in FIG. 3(a) and FIG. 3(b), a filter 100 has a laminate 10. The upper surface of the laminate 10 is a surface 10b on which a direction identification mark 18 is provided. The lower surface of the laminate 10 is a surface 10a on which terminals 14 are provided. The terminals 14 include an input terminal Tin, an output terminal Tout, and a ground terminal Tg. The laminate 10 is a substantially rectangular parallelepiped, and the stacking direction of the laminate 10 is the Z direction, the long side direction of the rectangle when the laminate 10 is viewed from above is the X direction, and the short side direction is the Y direction.

[0023] FIG. 4 is a cross-sectional view of the filter according to the first embodiment. As shown in FIG. 4, the laminate 10 includes dielectric layers 11a-11j and conductor layers 12a-12j alternately stacked in the Z direction. Via wirings 13b-13j are provided penetrating the dielectric layers 11b-11j. The via wirings 13b-13j each electrically connect at least two layers of the conductor layers 12a-12j. The conductor layers 12i and 12j are the first conductor layer 12x forming the lines SL1 and SL4. The conductor layers 12d-12h are the second conductor layer 12y forming the electrodes of the capacitors C1-C8. The conductor layers 12b and 12c are the third conductor layer 12z forming the lines SL2, SL3, and SL5.

[0024] Fig. 5 and Fig. 6 are exploded perspective views of the filter according to the first embodiment. In Fig. 5 and Fig. 6, connections of via wirings 13b to 13j are indicated by dashed lines. Fig. 7(a) to Fig. 7(e) and Fig. 8(a) to Fig. 8(f) are plan views showing the dielectric layers and conductor layers of the filter according to the first embodiment. Fig. 7(a) to Fig. 8(e) are plan views of dielectric layers 11a to 11j, respectively. Fig. 8(f) is a plan view of terminal 14 seen through dielectric layer 11j.

[0025] As shown in FIG. 5 to FIG. 8(f), the conductor layer 12a formed on the dielectric layer 11a forms a direction identification mark 18. The conductor layer 12b provided on the dielectric layer 11b forms the lines SL2a and SL3a. The conductor layer 12c provided on the dielectric layer 11c forms the lines SL2b and SL3b. The lines SL2a and SL2b are electrically connected by the via wiring 13b to form the line SL2. The lines SL3a and SL3b are electrically connected by the via wiring 13b to form the line SL3. The lines SL2a and SL3a are each spiral-shaped. The lines SL2a and SL2b form a three-dimensional spiral shape, and the lines SL3a and SL3b form a three-dimensional spiral shape. The conductor layer 12b includes a line SL5 that connects the lines SL2 and SL3.

[0026] The conductive layer 12d provided on the dielectric layer 11d forms the upper electrodes C5a and C6a of the capacitors C5 and C6, respectively. The conductive layer 12e provided on the dielectric layer 11e forms the lower electrodes C5b and C6b of the capacitors C5 and C6, respectively, and forms the upper electrodes C2a and C3a of the capacitors C2 and C3, respectively. The dielectric layer 11d and the electrodes C5a and C5b sandwiching the dielectric layer 11d form the capacitor C5, and the dielectric layer 11d and the electrodes C6a and C6b sandwiching the dielectric layer 11d form the capacitor C6.

[0027] The conductor layer 12f provided on the dielectric layer 11f forms the lower electrodes C2b and C3b of the capacitors C2 and C3, respectively, and the upper electrodes C1a and C4a of the capacitors C1 and C4, respectively. The dielectric layer 11e and the electrodes C2a and C2b sandwiching the dielectric layer 11e form the capacitor C2, and the dielectric layer 11e and the electrodes C3a and C3b sandwiching the dielectric layer 11e form the capacitor C3.

[0028] The conductor layer 12g provided on the dielectric layer 11g forms the lower electrodes C1b and C4b of the capacitors C1 and C4, respectively, and the upper electrodes C7a and C8a of the capacitors C7 and C8, respectively. The dielectric layer 11f and the electrodes C1a and C1b sandwiching the dielectric layer 11f form the capacitor C1, and the dielectric layer 11f and the electrodes C4a and C4b sandwiching the dielectric layer 11f form the capacitor C4.

[0029] The conductive layer 12h provided on the dielectric layer 11h forms the lower electrodes C7b and C8b of the capacitors C7 and C8, respectively. The dielectric layer 11g and the electrodes C7a and C7b sandwiching the dielectric layer 11g form the capacitor C7, and the dielectric layer 11g and the electrodes C8a and C8b sandwiching the dielectric layer 11g form the capacitor C8.

[0030] Conductor layer 12i provided on dielectric layer 11i forms lines SL1a and SL4a. Conductor layer 12j provided on dielectric layer 11j forms lines SL1b, SL4b and a ground pattern G. Lines SL1a and SL1b are electrically connected by via wiring 13i to form line SL1. Lines SL4a and SL4b are electrically connected by via wiring 13i to form line SL4. Lines SL1a, SL1b, SL4a, and SL4b each have a spiral shape. Lines SL1a and SL1b form a three-dimensional spiral shape, and lines SL4a and SL4b form a three-dimensional spiral shape.

[0031] An input terminal Tin, an output terminal Tout, and a ground terminal Tg are provided under the dielectric layer 11j by terminals 14. The ground terminal Tg is electrically connected to the ground pattern G by via wiring 13j.

[0032] The dielectric layers 11a to 11j are made of a ceramic material and contain, for example, oxides of Si, Ca, and Mg (for example, diopside crystal CaMgSiO6) as a main component. The main component of the dielectric layers 11a to 11j may be an oxide other than Si, Ca, and / or Mg. Furthermore, the dielectric layers 11a to 11j may contain at least one oxide of Ti, Zr, and Al as an insulating material.

[0033] The conductive layers 12a to 12j, the via wirings 13b to 13j, and the upper portion of the terminal 14 are non-magnetic metal layers mainly composed of, for example, Ag, Pd, Pt, Cu, Ni, Au, an Au-Pd alloy, or an Ag-Pt alloy. The upper portion of the terminal 14 may contain a non-conductive material such as TiO2, ZrO2, or Al2O3 in addition to the above metal materials. The lower portion of the terminal 14 is a Ni film and a Sn film.

[0034] The laminate 10 is manufactured, for example, as follows. The dielectric layers 11a to 11j are manufactured, for example, by using a doctor blade method. Via wiring 13b to 13j penetrating the dielectric layers 11b to 11j is formed. For example, via holes penetrating the dielectric layers 11a to 11j are formed by laser light irradiation. The via wiring 13b to 13j is formed in the via holes by using a squeegee method or the like. The conductor layers 12a to 12j and the upper parts of the terminals 14 are formed on the surfaces of the dielectric layers 11a to 11j. The conductor layers 12a to 12j and the upper parts of the terminals 14 are formed, for example, by using a screen printing method or a transfer method. The dielectric layers 11a to 11j are laminated to form the laminate 10. For example, hot pressing or an adhesive is used to laminate the dielectric layers 11a to 11j. The laminate 10 is fired, for example, at 700° C. or higher. As a result, the dielectric layers 11a to 11j become sintered bodies. The lower parts of the terminals 14 are formed below the upper parts of the terminals 14. The lower portion of the terminal 14 is formed by a plating method such as barrel plating.

[0035] [simulation] The transmission characteristics and reflection characteristics of the filter of Example 1 were simulated under the following simulation conditions. The laminate 10 has a width of 1.0 mm in the X direction, a width of 0.5 mm in the Y direction, and a height of 0.2 mm in the Z direction. Table 1 shows the thickness of each of the dielectric layers 11a to 11j, approximate values ​​of the capacitance of the capacitors C1 to C8, and approximate values ​​of the inductance of the lines SL1 to SL5. [Table 1]

[0036] FIG. 2 shows the simulation results of the pass characteristic S21 and the reflection characteristic S11 of the filter according to the first embodiment.

[0037] In Patent Documents 1 to 3, the capacitors constituting the resonant circuit are provided closer to the terminal than the lines constituting the resonant circuit. This is to suppress interference between the lines and the metal pattern of the mounting board to which the terminals are joined. However, if the distance between lines SL1 and SL2 is short, magnetic field coupling M1 occurs as shown in Figure 1. If the distance between lines SL3 and SL4 is short, magnetic field coupling M2 occurs. This causes the resonant frequencies of the parallel resonant circuits PR1 to PR4 to fluctuate, making it difficult to design the attenuation poles A1 to A4 in Figure 2 to be set to desired frequencies.

[0038] According to the first embodiment, the parallel resonant circuit PR1 (first resonant circuit) includes a line SL1 (first line) and a capacitor C1 (first capacitor). The line SL1 is formed by the conductor layers 12i and 12j (first conductor layers 12x), and the electrodes C1a and C1b (first electrodes) of the capacitor C1 are formed by the conductor layers 12f and 12g (second conductor layers 12y). The parallel resonant circuit PR2 (second resonant circuit) includes a line SL2 (second line) and a capacitor C2 (second capacitor). The line SL2 is formed by the conductor layers 12b and 12c (third conductor layers 12z), and the electrodes C2a and C2b (second electrodes) of the capacitor C2 are formed by the conductor layers 12e and 12f (second conductor layers 12y). As shown in FIG. 4, the second conductive layer 12y is located between the first conductive layer 12x and the third conductive layer 12z. This increases the distance between the lines SL1 and SL2, and the electrodes of the capacitors C1 and C2 are provided between them. This reduces the magnetic coupling M1 between the lines SL1 and SL2. This makes it easier to design the resonant frequencies of the parallel resonant circuits PR1 and PR2.

[0039] The parallel resonant circuit PR3 (third resonant circuit) includes a line SL3 (third line) and a capacitor C3 (third capacitor). The line SL3 is formed by the conductor layers 12b and 12c (third conductor layer 12z), and the electrodes C3a and C3b (third electrodes) of the capacitor C3 are formed by the conductor layers 12e and 12f (second conductor layer 12y). The parallel resonant circuit PR4 (fourth resonant circuit) includes a line SL4 (fourth line) and a capacitor C4 (fourth capacitor). The line SL4 is formed by the conductor layers 12i and 12j (first conductor layer 12x), and the electrodes C4a and C4b (fourth electrodes) of the capacitor C4 are formed by the conductor layers 12f and 12g (second conductor layer 12y). This increases the distance between the lines SL3 and SL4, and the electrodes of the capacitors C3 and C4 are provided between them. This reduces the magnetic coupling M2 between the lines SL3 and SL4, making it easier to design the resonant frequencies of the parallel resonant circuits PR3 and PR4.

[0040] As shown in Fig. 1, the parallel resonant circuits PR1 to PR4 are shunt-connected between the input terminal Tin and the output terminal Tout. This allows the attenuation poles A1 to A4 in Fig. 4 to be formed by the resonant frequencies of the parallel resonant circuits PR1 to PR4. Since the magnetic field couplings M1 and M2 can be made small, it is easy to design the frequencies of the attenuation poles A1 to A4.

[0041] As shown in FIG. 1, among the resonant circuits PR1 to PR4, the resonant circuit PRP1 is electrically closest to the input terminal Tin, and the resonant circuit PR4 is electrically closest to the output terminal Tout. Therefore, the first conductive layer 12x is positioned between the surface 10b of the laminate 10 on which the input terminal Tin and the output terminal Tout are provided, and the second conductive layer 12y. This makes it possible to shorten the connection distance between the input terminal Tin and the parallel resonant circuit PR1, and the connection distance between the output terminal Tout and the parallel resonant circuit PR2. In addition, it is preferable that the Q value of the parallel resonant circuits PR2 and PR3, which are far from the input terminal Tin and the output terminal Tout, is high. Since the lines SL2 and SL3 are far from the mounting board, the Q value of the lines SL2 and SL3 becomes high, and the Q value of the parallel resonant circuits PR2 and PR3 can be increased.

[0042] When at least a part of the line SL1 overlaps with at least a part of the line SL2 as viewed from the Z direction, the lines SL1 and SL2 are likely to be magnetically coupled. Therefore, at least a part of the line SL1 overlaps with at least a part of the electrodes C1a, C1b, C2a, and C2b, and at least a part of the line SL2 overlaps with at least a part of the electrodes C1a, C1b, C2a, and C2b. This makes it possible to reduce the magnetic field coupling M1.

[0043] Similarly, when at least a part of the line SL3 overlaps with at least a part of the line SL4 as viewed from the Z direction, the lines SL3 and SL4 are likely to be magnetically coupled. Therefore, at least a part of the line SL3 overlaps with at least a part of the electrodes C3a, C3b, C4a, and C4b, and at least a part of the line SL4 overlaps with at least a part of the electrodes C3a, C3b, C4a, and C4b. This makes it possible to reduce the magnetic field coupling M2.

[0044] The lines SL1 and SL2 do not overlap with the lines SL3 and SL4 when viewed from the Z direction. This results in a small magnetic field coupling between the lines SL1 and SL3 and SL4, and a small magnetic field coupling between the lines SL2 and SL3 and SL4.

[0045] At least one of the lines SL1 to SL4 has a spiral shape. When the lines have a spiral shape, the magnetic field coupling between the lines SL1 to SL4 becomes large. Therefore, it is preferable to dispose the second conductive layer 12y between the first conductive layer 12x and the third conductive layer 12z. Here, the spiral shape includes not only a spiral shape on the same conductive layer (same plane) but also a helical shape and a spiral shape formed on multiple conductive layers. Although an example in which the lines SL1 to SL4 are each formed by multiple conductive layers has been described, each of the lines SL1 to SL4 may be formed by a single conductive layer.

[0046] Although an example in which the filter has four parallel resonant circuits has been described, the filter may have two, three, five or more parallel resonant circuits. EXAMPLES

[0047] The second embodiment is an example of a triplexer using the filter of the first embodiment. FIG. 9 is a circuit diagram of a triplexer according to the second embodiment. As shown in FIG. 9, a triplexer 50 includes filters 52, 54, and 56. The filters 52, 54, and 56 are connected between a common terminal Ant and terminals LB, MB, and HB, respectively. An antenna 58 is connected to the common terminal Ant. The filter 52 is, for example, a low-pass filter LPF or a band-pass filter BPF, and passes a high-frequency signal in a low band and suppresses signals of other frequencies. The filter 54 is, for example, a band-pass filter BPF, and passes a high-frequency signal in a middle band, which is a frequency higher than the low band, and suppresses signals of other frequencies. The filter 56 is, for example, a high-pass filter HPF or a band-pass filter BPF, and passes a high-frequency signal in a high band, which is a frequency higher than the middle band, and suppresses signals of other frequencies.

[0048] At least one of the filters 52, 54, and 56 may be the filter of Example 1. A multiplexer including at least two of the filters 52, 54, and 56 may be a composite electronic component. Although a triplexer has been described as an example of the multiplexer, the multiplexer may be a diplexer, a duplexer, or a quadplexer.

[0049] [Modification 1 of Example 2] A first modification of the second embodiment is an example of a communication module using the filter of the first embodiment. Fig. 10 is a circuit diagram of a communication module according to the first modification of the second embodiment. As shown in Fig. 10, a module 60 includes a filter 61, a switch 62, a low noise amplifier LNA63, and a power amplifier PA64.

[0050] An antenna 58 is connected to the antenna terminal TA. One end of a filter 61 is connected to the antenna terminal TA. The other end of the filter 61 is connected to a switch 62. An input terminal of an LNA 63 and an output terminal of a PA 64 are connected to the switch 62. The output terminal of the LNA 63 is connected to a receiving terminal TR. The input terminal of the PA 64 is connected to a transmitting terminal TT. An RFIC (Radio Frequency Integrated Circuit) is connected to the receiving terminal TR and the transmitting terminal TT.

[0051] The module 60 is, for example, a communication module for a TDD (Time Division Duplex) communication system. In the TDD communication system, the transmission band and the reception band are the same band. The filter 61 is, for example, a bandpass filter, which passes high-frequency signals in a passband that includes the transmission band and the reception band and suppresses signals of other frequencies.

[0052] When receiving a reception signal, the switch 62 connects the filter 61 to the LNA 63. As a result, a high frequency signal received by the antenna 58 is filtered by the filter 61 to a signal in the reception band, amplified by the LNA 63, and output to the RFIC 65. When transmitting a transmission signal, the switch 62 connects the filter 61 to the PA 64. As a result, a high frequency signal output from the RFIC 65 is amplified by the PA 64, filtered by the filter 61 to a signal in the transmission band, and output from the antenna 58.

[0053] The filter 61 in the communication module of the first modification of the second embodiment can be the filter of the first embodiment. The module may be a communication module of another circuit type.

[0054] Although the embodiments of the present invention have been described in detail above, the present invention is not limited to such specific embodiments, and various modifications and variations are possible within the scope of the gist of the present invention described in the claims. [Explanation of symbols]

[0055] 10 Laminate 11a-11j Dielectric layer 12a-12j Conductor layer 13b-13j Via wiring 14 Terminals

Claims

1. A ground terminal; a laminate in which a plurality of dielectric layers are laminated; a first resonant circuit including a first line formed by one or more first conductors provided within the laminate, and a first electrode formed by a plurality of second conductors provided within the laminate, and a first capacitor connected to the ground terminal via the first line; a second resonant circuit including a second line formed by one or more third conductors provided within the laminate, and a second capacitor including a second electrode formed by the plurality of second conductors and connected to the ground terminal via the second line, wherein the plurality of second conductors are located between the one or more first conductors and the one or more third conductors; A composite electronic component comprising:

2. 2. The composite electronic component according to claim 1, comprising an input terminal and an output terminal, wherein the first resonant circuit and the second resonant circuit are parallel resonant circuits shunt-connected between the input terminal and the output terminal.

3. a third resonant circuit including a third line formed by the one or more third conductors and a third capacitor including a third electrode formed by the multiple second conductors, the third resonant circuit being a parallel resonant circuit shunt-connected between the input terminal and the output terminal; a fourth resonant circuit including a fourth line formed by the one or more first conductors and a fourth capacitor including a fourth electrode formed by the plurality of second conductors, the fourth resonant circuit being a parallel resonant circuit shunt-connected between the input terminal and the output terminal; The composite electronic component according to claim 2 .

4. 4. The composite electronic component according to claim 3, wherein, among the first resonant circuit, the second resonant circuit, the third resonant circuit and the fourth resonant circuit, the first resonant circuit is the resonant circuit closest electrically to the input terminal, and the fourth resonant circuit is the resonant circuit closest electrically to the output terminal.

5. 5. The composite electronic component according to claim 4, wherein the one or more first conductors are located between the surface of the laminate on which the input terminal and the output terminal are provided and the second conductors.

6. 6. The composite electronic component according to claim 1, wherein, when viewed in a stacking direction of the laminate, at least a portion of the first line overlaps with at least a portion of the second line, at least a portion of the first line overlaps with at least a portion of the first electrode and the second electrode, and at least a portion of the second line overlaps with at least a portion of the first electrode and the second electrode.

7. The composite electronic component according to claim 1 , wherein at least one of the first line and the second line has a spiral shape.

8. The composite electronic component according to claim 1 , comprising a filter including the first resonant circuit and the second resonant circuit.

9. 9. The composite electronic component of claim 8, comprising a multiplexer including the filter.

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