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CN-114826186-B - Laminated electronic component

CN114826186BCN 114826186 BCN114826186 BCN 114826186BCN-114826186-B

Abstract

The electronic component includes a common port, a signal port, a first inductor, a second inductor, and a laminate. The first inductor has a first end and a second end. The second end of the first inductor is connected with one end of the second inductor. The first inductor conductor constituting the first inductor is wound around an axis extending in the first direction. The second inductor conductor constituting the second inductor is wound around an axis extending in a second direction intersecting the first direction.

Inventors

  • Sen Zhizhi

Assignees

  • TDK株式会社

Dates

Publication Date
20260505
Application Date
20220127
Priority Date
20210129

Claims (9)

  1. 1. A laminated electronic component is characterized in that, The device is provided with: A first port; a second port through which a signal inputted to the first port passes; a first inductor and a second inductor arranged in circuit configuration between the first port and the second port, and A laminated body including a plurality of dielectric layers and a plurality of conductors laminated to integrate the first port, the second port, the first inductor, and the second inductor, The first inductor has a first end closest to the first port in circuit configuration and a second end as an end on the opposite side from the first end, The second end of the first inductor is connected directly to one end of the second inductor in circuit configuration, The laminate includes a first inductor conductor constituting the first inductor and a second inductor conductor constituting the second inductor, The first inductor conductor is wound centered on an axis extending in a first direction, The second inductor conductor is wound around an axis extending in a second direction intersecting the first direction, The first direction is parallel to a lamination direction of the plurality of dielectric layers, The first inductor conductor includes a plurality of first conductor layers, The second inductor conductor includes a second conductor layer, a plurality of first via holes formed in different dielectric layers among the plurality of dielectric layers and connected in series, and a plurality of second via holes formed in different dielectric layers among the plurality of dielectric layers and connected in series, The plurality of first vias includes a particular first via connected to the second conductor layer, The plurality of second vias includes a particular second via connected to the second conductor layer, The number of the plurality of first through holes and the number of the plurality of second through holes are greater than the number of the plurality of first conductor layers.
  2. 2. The laminated electronic component according to claim 1, wherein, The first direction and the second direction are mutually orthogonal.
  3. 3. The laminated electronic component according to claim 1, wherein, The first inductor and the second inductor are arranged in series on a path connecting the first port and the second port.
  4. 4. The laminated electronic component according to claim 1, wherein, Also provided is a first resonator which is provided between the first port and the second port in a circuit configuration, The first inductor and the second inductor are included in the first resonator.
  5. 5. The laminated electronic component according to claim 4, wherein, The device further comprises: A third port, and A second resonator is disposed in circuit configuration between the first port and the third port.
  6. 6. The laminated electronic component according to claim 5, wherein, One of the second port and the third port is a first signal port that selectively passes a first signal of frequencies within a first passband, The other of the second port and the third port is a second signal port that selectively passes a second signal having a frequency in a second passband lower than the first passband.
  7. 7. The laminated electronic component according to claim 6, wherein, The second port is the first signal port, The third port is the second signal port.
  8. 8. The laminated electronic component according to claim 5, wherein, The laminate further includes a second resonator conductor constituting the second resonator, The first inductor conductor is a horizontal inductor conductor wound around an axis extending in a direction parallel to a lamination direction of the plurality of dielectric layers, The second inductor conductor is a vertical inductor conductor wound around an axis extending in a direction orthogonal to a lamination direction of the plurality of dielectric layers, The vertical inductor conductor is disposed at a position farther from the second resonator conductor than the horizontal inductor conductor.
  9. 9. The laminated electronic component according to claim 5, wherein, The laminated body has a bottom surface and an upper surface at both ends in a lamination direction of the plurality of dielectric layers, and four side surfaces connecting the bottom surface and the upper surface, The bottom surface and the upper surface each have a rectangular shape long in one direction, The four side surfaces include a first side surface located at both ends in the long side direction of the rectangular shape and a second side surface located at both ends in the long side direction of the rectangular shape, The first inductor conductor is a horizontal inductor conductor wound around an axis extending in a direction parallel to a lamination direction of the plurality of dielectric layers, The second inductor conductor is a vertical inductor conductor wound around an axis extending in a direction orthogonal to a lamination direction of the plurality of dielectric layers, The vertical inductor conductor is disposed closer to the first side than the second side, The distance from the vertical inductor conductor to the first side is less than the distance from the horizontal inductor conductor to the first side.

Description

Laminated electronic component Technical Field The present invention relates to a laminated electronic component including two inductors. Background In a small mobile communication device, an antenna is widely used, which is commonly used in a plurality of applications having different system and use frequency bands, and which separates a plurality of signals transmitted and received by a demultiplexer. In general, a demultiplexer for separating a first signal having a frequency in a first frequency band from a second signal having a frequency in a second frequency band higher than the first frequency band includes a common port, a first signal port, a second signal port, a first filter provided in a first signal path from the common port to the first signal port, and a second filter provided in a second signal path from the common port to the second signal port. For example, an LC resonator configured using an inductor and a capacitor is used as the first and second filters. As a demultiplexer, as disclosed in japanese patent application laid-open No. 107408932a, a demultiplexer using a laminate including a plurality of dielectric layers laminated is known. As an inductor for an LC resonator, an inductor is known which is configured using an inductor electrode extending in a short side direction of a laminate and two via conductors extending in a lamination direction of the laminate as disclosed in japanese patent application laid-open No. 107408932 a. In recent years, miniaturization and space saving of small mobile communication devices have been demanded in the market, and miniaturization of a demultiplexer used for the communication devices has been demanded. In the case where the LC resonator constituting the filter includes two inductors, if the demultiplexer is miniaturized, electromagnetic field coupling between the two inductors sometimes becomes too strong. As a result, the desired characteristics may not be achieved. In the specification 107408932a of chinese patent application publication, there is disclosed a method of reducing electromagnetic field coupling between two inductors by staggering two inductors each composed of an inductor electrode and two via conductors along a long side direction of an upper surface of a duplexer. However, if the demultiplexer is miniaturized, the space for shifting the two inductors is also reduced, and therefore, in the method described in japanese patent application laid-open No. 107408932a, there is a problem that electromagnetic field coupling between the two inductors cannot be sufficiently reduced in the miniaturized demultiplexer. The above-described problems are not limited to the demultiplexer, and are applicable to the whole of a laminated electronic component including two inductors capable of electromagnetic field coupling. Disclosure of Invention The purpose of the present invention is to provide a laminated electronic component that can suppress electromagnetic field coupling between two inductors and achieve desired characteristics. A laminated electronic component includes a first port, a second port through which a signal inputted to the first port passes, a first inductor and a second inductor provided between the first port and the second port in a circuit configuration, and a laminated body including a plurality of dielectric layers and a plurality of conductors laminated to integrate the first port, the second port, the first inductor, and the second inductor. The first inductor has a first end closest to the first port in circuit configuration, and a second end that is an end on the opposite side from the first end. The second end of the first inductor is connected with one end of the second inductor. The laminate includes a first inductor conductor constituting a first inductor and a second inductor conductor constituting a second inductor. The first inductor conductor is wound around an axis extending in the first direction. The second inductor conductor is wound around an axis extending in a second direction intersecting the first direction. In the laminated electronic component of the present invention, the first direction and the second direction may be orthogonal to each other. In this case, one of the first direction and the second direction may be parallel to the stacking direction of the plurality of dielectric layers. In the laminated electronic component of the present invention, the first inductor and the second inductor may be provided in series on a path connecting the first port and the second port. The laminated electronic component of the present invention may further include a first resonator provided between the first port and the second port in a circuit configuration. The first inductor and the second inductor may be included in the first resonator. In this case, the laminated electronic component may further include a third port and a second resonator provided between the first port and the third port in a circuit co