WO2017154387A1 - 弾性波装置 - Google Patents
弾性波装置 Download PDFInfo
- Publication number
- WO2017154387A1 WO2017154387A1 PCT/JP2017/002348 JP2017002348W WO2017154387A1 WO 2017154387 A1 WO2017154387 A1 WO 2017154387A1 JP 2017002348 W JP2017002348 W JP 2017002348W WO 2017154387 A1 WO2017154387 A1 WO 2017154387A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- switch
- wave device
- inductor
- impedance matching
- matching element
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/005—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges
- H04B1/0053—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges with common antenna for more than one band
- H04B1/006—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges with common antenna for more than one band using switches for selecting the desired band
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
- H03H7/38—Impedance-matching networks
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
- H03H7/46—Networks for connecting several sources or loads, working on different frequencies or frequency bands, to a common load or source
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
- H03H7/46—Networks for connecting several sources or loads, working on different frequencies or frequency bands, to a common load or source
- H03H7/463—Duplexers
- H03H7/465—Duplexers having variable circuit topology, e.g. including switches
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic elements; Electromechanical resonators
- H03H9/02—Details
- H03H9/05—Holders or supports
- H03H9/0538—Constructional combinations of supports or holders with electromechanical or other electronic elements
- H03H9/0547—Constructional combinations of supports or holders with electromechanical or other electronic elements consisting of a vertical arrangement
- H03H9/0561—Constructional combinations of supports or holders with electromechanical or other electronic elements consisting of a vertical arrangement consisting of a multilayered structure
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic elements; Electromechanical resonators
- H03H9/70—Multiple-port networks for connecting several sources or loads, working on different frequencies or frequency bands, to a common load or source
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic elements; Electromechanical resonators
- H03H9/70—Multiple-port networks for connecting several sources or loads, working on different frequencies or frequency bands, to a common load or source
- H03H9/72—Networks using surface acoustic waves
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/005—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges
- H04B1/0053—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges with common antenna for more than one band
- H04B1/0057—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges with common antenna for more than one band using diplexing or multiplexing filters for selecting the desired band
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/02—Transmitters
- H04B1/04—Circuits
- H04B1/0458—Arrangements for matching and coupling between power amplifier and antenna or between amplifying stages
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/06—Receivers
- H04B1/16—Circuits
- H04B1/18—Input circuits, e.g. for coupling to an antenna or a transmission line
Definitions
- the present invention relates to an elastic wave device.
- Patent Document 1 discloses an example of an elastic wave device having a plurality of duplexers.
- This elastic wave device has a switch for switching a connection state between an antenna and a plurality of duplexers.
- a matching circuit is connected between the antenna and the switch.
- a surface mount type inductor element is connected between the switch and each duplexer in order to improve impedance matching.
- an object of the present invention is to provide an acoustic wave device that can be reduced in size without causing deterioration of filter characteristics.
- an impedance matching element having one end and the other end, a first switch terminal connected to the other end of the impedance matching element, and a plurality of second terminals
- a substrate, and at least one inductor provided on the substrate and having an inductance smaller than that of the impedance matching element, wherein at least one second switch terminal and at least one multiplexer are provided. Are connected through the inductor.
- the switch includes at least one capacitor connected between the first switch terminal and at least one of the multiplexers. In this case, it is possible to further reduce the size.
- an impedance matching element having one end and the other end, a first switch terminal connected to the other end of the impedance matching element, and a plurality of first A switch for switching a connection state between the first switch terminal and the plurality of second switch terminals, and a plurality of multiplexers respectively connected to the plurality of second switch terminals.
- the switch includes at least one capacitor connected between the first switch terminal and at least one of the multiplexers.
- the acoustic wave device further includes: a substrate; and at least one inductor provided on the substrate and having an inductance smaller than that of the impedance matching element.
- the second switch terminal and at least one of the multiplexers are connected via the inductor. In this case, it is possible to further reduce the size.
- At least one of the inductors is a first inductor including a wiring pattern provided on the substrate. In this case, it is possible to further reduce the size.
- the first inductor has a wiring pattern longer than a distance between the second switch terminal to which the first inductor is connected and the multiplexer. It is configured. In this case, it is possible to effectively reduce the size.
- the first inductor includes a meander-shaped wiring pattern.
- the acoustic wave device further includes at least one laminated substrate laminated on the substrate, and the first inductor is formed on the substrate and the laminated substrate. And a via electrode portion connected to the wiring pattern portion and penetrating through the multilayer substrate.
- the first inductor includes a wiring pattern having a spiral shape provided on at least one of the substrate and the multilayer substrate.
- At least one of the inductors is a second inductor that is a surface-mount type inductor component, and at least one of the multiplexers includes the second inductor. It is connected to the impedance matching element without being interposed. In this case, the Q value can be increased.
- the impedance matching element, the switch, the inductor, and the plurality of multiplexers are provided on the substrate. In this case, it is possible to further reduce the size.
- a substrate is further provided, and the impedance matching element, the switch, and the plurality of multiplexers are provided on the substrate. In this case, it is possible to further reduce the size.
- At least one of the second switch terminals and at least one of the multiplexers are connected via a capacitor.
- At least one of an inductor and a capacitor is connected between at least one of the second switch terminals, at least one of the multiplexers, and a ground potential. Yes.
- the impedance matching element and the switch are connected via at least one of an inductor and a capacitor.
- At least one of an inductor and a capacitor is connected between the impedance matching element and the switch and a ground potential.
- the first switch terminal is connected to one second switch terminal.
- the first switch terminal is connected to the plurality of second switch terminals.
- the one end of the impedance matching element is connected to an antenna.
- the impedance matching element is connected between the antenna and the first switch terminal.
- the one end of the impedance matching element is connected to an amplifier.
- the impedance matching element is connected between the amplifier and the first switch terminal.
- the elastic wave device of the present invention it is possible to reduce the size without deteriorating the filter characteristics.
- FIG. 1 is a schematic diagram of an elastic wave device according to a first embodiment of the present invention.
- FIG. 2 is a schematic front view of the acoustic wave device according to the first embodiment of the present invention.
- FIG. 3 is a schematic diagram of an elastic wave device of a first comparative example.
- FIG. 4 is a schematic diagram of an elastic wave device of a second comparative example.
- FIG. 5 is a schematic plan view showing an example of the shape of the wiring pattern in the first inductor according to the first embodiment of the present invention.
- FIG. 6 is a schematic cross-sectional view of the vicinity of the first inductor in the first modification of the first embodiment of the present invention.
- FIG. 7 is a schematic plan view of the vicinity of the first inductor in the second modification of the first embodiment of the present invention.
- FIG. 8 is a schematic diagram showing the vicinity of the impedance matching element and the switch in the third modification of the first embodiment of the present invention.
- FIG. 9 is a schematic diagram showing the vicinity of the impedance matching element and the switch in the fourth modified example of the first embodiment of the present invention.
- FIG. 10 is a schematic diagram showing the vicinity of the impedance matching element and the switch in the fifth modification example of the first embodiment of the present invention.
- FIG. 11 is a schematic diagram of an acoustic wave device according to a sixth modification of the first embodiment of the present invention.
- FIG. 12 is a schematic diagram of an acoustic wave device according to a seventh modification of the first embodiment of the present invention.
- FIG. 13 is a schematic diagram of an acoustic wave device according to a second embodiment of the present invention.
- FIG. 14 is a schematic diagram of an acoustic wave device according to a first modification of the second embodiment of the present invention.
- FIG. 15 is a schematic diagram of an acoustic wave device according to a second modification of the second embodiment of the present invention.
- FIG. 16 is a schematic diagram of an acoustic wave device according to a third embodiment of the present invention.
- FIG. 17 is a schematic diagram of an acoustic wave device according to a fourth embodiment of the present invention.
- FIG. 1 is a schematic diagram of an elastic wave device according to a first embodiment of the present invention.
- FIG. 2 is a schematic front view of the acoustic wave device according to the first embodiment.
- the acoustic wave device 1 has a mounting substrate 3 as a substrate in the present invention.
- first to fourth duplexers 2A to 2D are provided as first to fourth multiplexers.
- the first to fourth duplexers 2A to 2D each have a reception filter and a transmission filter.
- the first to fourth duplexers 2A to 2D are used, for example, for different Bands in a mobile phone.
- the first duplexer 2A has an input terminal 2Aa and an output terminal 2Ab.
- the input terminal 2Aa is a transmission terminal
- the output terminal 2Ab is a reception terminal.
- the second to fourth duplexers 2B to 2D also have input terminals 2Ba to 2Da and output terminals 2Bb to 2Db.
- the acoustic wave device 1 has a terminal 4.
- the terminal 4 is an antenna terminal connected to the antenna.
- the terminal 4 is connected to an impedance matching element 5 which is a surface mount type (SMD type) inductor. More specifically, the impedance matching element 5 has one end and the other end.
- the terminal 4 is connected to one end of the impedance matching element 5.
- the impedance matching element 5 is a chip component.
- the impedance matching element 5 is mounted on the mounting substrate 3 via, for example, solder.
- the switch 6 includes a first switch terminal 6a and a plurality of second switch terminals 6bA to 6bD.
- the first switch terminal 6 a is connected to the impedance matching element 5.
- the plurality of second switch terminals 6bA to 6bD are connected to the first to fourth duplexers 2A to 2D through first to fourth wirings 9A to 9D, respectively.
- the terminal 4, the impedance matching element 5, the switch 6, the first to fourth wirings 9A to 9D, and the first to fourth duplexers 2A to 2D are provided on the mounting substrate 3.
- the acoustic wave device 1 includes first inductors 8aB and 8aD.
- the first inductor 8aB is provided on the second wiring 9B.
- the first inductor 8aD is provided on the fourth wiring 9D.
- the inductances of the first inductors 8aB and 8aD are both smaller than the inductance of the impedance matching element 5.
- the first inductors 8aB and 8aD are formed of a wiring pattern provided on the mounting substrate 3.
- the first inductor 8aB is provided on the second wiring 9B means that the second switch terminal 6bB and the duplexer 2B are connected via the first inductor 8aB. It means that
- the impedance matching element 5 and the first inductors 8aB and 8aD perform impedance matching on the antenna side of the first to fourth duplexers 2A to 2D.
- no inductor is connected to the first and third wirings 9A and 9C.
- the feature of this embodiment is the following configuration. 1) An impedance matching element 5 that is a surface mount type inductor component is connected between the terminal 4 and the switch 6. 2) The first inductors 8aB and 8aD having a smaller inductance than the impedance matching element 5 and made of a wiring pattern are provided on the second and fourth wirings 9B and 9D. Thereby, the acoustic wave device 1 can be downsized without causing deterioration of the filter characteristics. This will be described below.
- the inductance required for impedance matching is 8 nH.
- the inductance required for impedance matching in the second duplexer 2B is 10 nH.
- the inductances required for impedance matching in the third and fourth duplexers 2C and 2D are 8 nH and 9 nH, respectively. These inductances are merely examples, and are not particularly limited.
- the impedance matching element 5 is connected to the first to fourth duplexers 2A to 2D via the switch 6.
- the impedance matching element 5 is an impedance matching element common to the first to fourth duplexers 2A to 2D.
- the inductance of the impedance matching element 5 is 8 nH, which is an inductance required for impedance matching by the first and third duplexers 2A and 2C. Therefore, even if the first and third duplexers 2A and 2C are not connected to an inductor other than the impedance matching element 5, impedance matching can be improved.
- the inductances of the first inductors 8aB and 8aD are 2 nH and 1 nH, respectively.
- the second duplexer 2B is connected to the impedance matching element 5 via the first inductor 8aB.
- the fourth duplexer 2D is connected to the impedance matching element 5 via the first inductor 8aD. Therefore, the impedance matching between the second and fourth duplexers 2B and 2D can be improved.
- this embodiment is compared with the first and second comparative examples.
- FIG. 3 is a schematic diagram of an elastic wave device of a first comparative example.
- the acoustic wave device 51 is different from the first embodiment in that no impedance matching element is connected between the terminal 4 and the switch 6.
- second inductors 48bA to 48bD are connected between the switch 6 and the first to fourth duplexers 2A to 2D, which are all duplexers. This is also different from the first embodiment.
- the second inductors 48bA to 48bD are surface mount type inductor components. Therefore, the inductor is larger than the inductor made of the wiring pattern provided on the mounting substrate 3. Since the same number of the second inductors 48bA to 48bD as the first to fourth duplexers 2A to 2D are provided, it is difficult to reduce the size of the acoustic wave device 51.
- the inductors other than the impedance matching element 5 are each composed of a wiring pattern provided on the mounting substrate 3.
- no inductor is connected between the first and third duplexers 2A and 2C and the switch 6. Therefore, it is possible to reduce the size of the acoustic wave device without causing deterioration of filter characteristics such as impedance matching.
- FIG. 4 is a schematic diagram of an elastic wave device of a second comparative example.
- the acoustic wave device 61 is different from the first embodiment in that an impedance matching element is not connected between the terminal 4 and the switch 6.
- first inductors 8aA to 8aD are connected between the switch 6 and the first to fourth duplexers 2A to 2D, which are all duplexers. This is also different from the first embodiment.
- impedance matching of the first to fourth duplexers 2A to 2D is performed only by the first inductors 8aA to 8aD made of the wiring pattern provided on the mounting substrate 3. As a result, the Q value deteriorates and the filter characteristics deteriorate.
- the elastic wave device 1 of the present embodiment shown in FIG. 1 is a surface-mount type inductor component, and includes an impedance matching element 5 having a high Q value. Further, in the present embodiment, the inductances of the first inductors 8aB and 8aD are smaller than the inductance of the impedance matching element 5. Therefore, the acoustic wave device 1 can be reduced in size without causing deterioration of the filter characteristics due to the deterioration of the Q value.
- impedance matching is performed only by the impedance matching element 5. Therefore, the filter characteristics are less likely to deteriorate.
- the elastic wave apparatus 1 should just have at least 1 1st inductor.
- the first inductor may be provided on all of the first to fourth wirings 9A to 9D.
- each said element may be provided on a respectively different board
- at least a part of the first to fourth wirings 9A to 9D may be provided on the substrate on which the first inductors 8aB and 8aD are provided.
- the first inductors 8aB and 8aD are formed of a wiring pattern provided on the mounting substrate 3. More specifically, the first inductor 8aB is configured by a wiring pattern longer than the distance between the second switch terminal 6bB to which the first inductor 8aB is connected and the duplexer 2B. The first inductor 8aD is configured similarly.
- FIG. 5 below shows an example of a wiring pattern constituting the first inductor 8aB.
- FIG. 5 is a schematic plan view showing an example of the shape of the wiring pattern in the first inductor according to the first embodiment.
- the first inductor 8aB may include a meander-shaped wiring pattern. Thereby, the impedance of the first inductor 8aB can be increased.
- the first inductor 8aB may be configured by a wiring pattern that does not include a meander shape and is longer than the distance between the second switch terminal and the duplexer. In this case, for example, the first inductor 8aB may be formed of a wiring pattern including a bent portion.
- the first inductor may be three-dimensionally formed. An example of this is shown below.
- FIG. 6 is a schematic cross-sectional view of the vicinity of the first inductor in the first modification of the first embodiment.
- FIG. 7 is a schematic plan view of the vicinity of the first inductor in the second modification example of the first embodiment.
- the acoustic wave device has a laminated substrate 73 laminated on the mounting substrate 3.
- the first inductor 78 a includes a plurality of wiring pattern portions 78 ⁇ / b> X provided on the multilayer substrate 73 and a plurality of wiring pattern portions 78 ⁇ / b> Z provided on the multilayer substrate 73.
- the first inductor 78 a has a plurality of via electrode portions 78 Y that penetrate the multilayer substrate 73.
- the wiring pattern portion 78X on the mounting substrate 3 and the wiring pattern portion 78Z on the multilayer substrate 73 are connected by a via electrode portion 78Y.
- the vicinity of the end of the wiring pattern portion 78X on the mounting substrate 3 and the vicinity of the end of the wiring pattern portion 78Z on the multilayer substrate 73 are caused by the via electrode portion 78Y. It is connected.
- the cross-sectional shape shown in FIG. 6 of the first inductor 78a is a meander shape.
- the acoustic wave device may have a plurality of laminated substrates 73. In this case, a plurality of laminated substrates 73 may be laminated.
- the wiring pattern portion 88X on the mounting substrate 3 has a spiral shape.
- the wiring pattern portion 78Z provided on the multilayer substrate 73 may have a spiral shape.
- the spiral shape may be three-dimensionally formed by connecting a plurality of wiring pattern portions 78Z by a plurality of via electrode portions 78Y. .
- the first switch terminal 6a is connected to one second switch terminal among the plurality of second switch terminals 6bA to 6bD.
- the first switch terminal 6a is connected to the two second switch terminals.
- the first switch terminal 6a may be connected to two or more second switch terminals.
- the size can be reduced without deteriorating the filter characteristics. it can.
- a capacitor and ground potential described later are indicated by circuit symbols.
- the impedance matching element 5 and the switch 6 are connected via an inductor 108. Further, a capacitor 107 is connected between the impedance matching element 5 and the switch 6 and the ground potential.
- the inductor 108 is an inductor made of a wiring pattern provided on the mounting substrate 3, similarly to the first inductor.
- the inductor 108 may be three-dimensionally formed as in the first to third modifications described above, or may be a surface mount inductor component.
- the inductor 108 is preferably made of a wiring pattern provided on the mounting substrate 3. In this case, it is possible to effectively reduce the size of the acoustic wave device.
- the impedance matching element 5 and the switch 6 are connected via a capacitor 107. Further, an inductor 108 is connected between the impedance matching element 5 and the switch 6 and the ground potential.
- At least one of the inductor 108 and the capacitor 107 may be connected between the impedance matching element 5 and the switch 6. At least one of the inductor 108 and the capacitor 107 may be connected between the impedance matching element 5 and the switch 6 and the ground potential.
- the second switch terminal 6bD and the duplexer 2D are connected via an inductor. Further, a capacitor 107 is connected between the second switch terminal 6bD and the duplexer 2D and the ground potential.
- the second switch terminal 6bD and the duplexer 2D are connected via a capacitor 107. Further, an inductor 108 is connected between the second switch terminal 6bD and the duplexer 2D and the ground potential.
- At least one second switch terminal that is not connected to the first inductor and the duplexer may be connected via the inductor 108.
- at least one second switch terminal and the duplexer may be connected via a capacitor 107.
- the capacitor 107 is connected between the second switch terminal 6bD that is not connected to the first inductor and the duplexer 2D.
- At least one of the inductor 108 and the capacitor 107 is connected between the at least one second switch terminal and the at least one multiplexer and the ground potential. May be.
- the inductor 108 may be connected between the second switch terminal and duplexer that are not connected to the first inductor and the ground potential.
- the elastic wave device 1 of the present embodiment shown in FIG. 1 includes the first to fourth duplexers 2A to 2D as the first to fourth multiplexers.
- the elastic wave device 1 may include, for example, a multiplexer in which the antenna end of the first duplexer 2A and the antenna end of the second duplexer 2B are connected.
- the antenna ends of the first duplexer 2A and the second duplexer 2B may be commonly connected to the first inductor 8aB.
- the impedance of the duplexer 2A to 2D on the antenna end side may be 50 ⁇ or may be other than 50 ⁇ .
- the impedances of the input terminals 2Aa to 2Da and the output terminals 2Ab to 2Db of the duplexers 2A to 2D may be 50 ⁇ or may be other than 50 ⁇ . In any of the above cases, the impedance matching can be improved in the present embodiment.
- FIG. 13 is a schematic diagram of an acoustic wave device according to the second embodiment.
- the elastic wave device 11 is different from the first embodiment in that the switch 16 includes capacitors 17A and 17C and the number of first inductors.
- the inductance of the impedance matching element 5 is also different from that of the first embodiment. Except for the above points, the acoustic wave device 11 has the same configuration as the acoustic wave device 1 of the first embodiment.
- the capacitor 17A is connected between the first switch terminal 6a of the switch 16 and the first duplexer 2A.
- the capacitor 17C is connected between the first switch terminal 6a and the third duplexer 2C.
- the first inductor 8aB is provided only on the second wiring 9B.
- the impedance of the impedance matching element 5 is 9 nH.
- the capacity of the capacitor 17A corresponds to ⁇ 1 nH.
- the capacity of the capacitor 17C corresponds to ⁇ 1 nH.
- the inductance of the first inductor 8aB is 1 nH.
- the inductances required for impedance matching by the first to fourth duplexers 2A to 2D are the same as those in the first embodiment.
- the first duplexer 2A is connected to the impedance matching element 5 via the capacitor 17A, impedance matching can be improved.
- the second and third duplexers 2B and 2C are connected to the impedance matching element 5 via the first inductor 8aB and the capacitor 17C, respectively, impedance matching can be improved.
- the acoustic wave device 11 can be downsized without causing deterioration of the filter characteristics.
- the switch 16 only needs to include at least one capacitor.
- the first to fourth duplexers 2A to 2D have the inductance required for impedance matching, the inductance of the impedance matching element 5, and the capacitances of the capacitors 17A and 17C, so that the first modification of the second embodiment shown in FIG. It is good also as such a structure. Or it is good also as a structure like the 2nd modification of 2nd Embodiment shown in FIG.
- the switch 16 includes capacitors 17A and 17C.
- the inductor provided on the second wiring 9B is the second inductor 48bB which is a surface-mount type inductor component.
- a plurality of second inductors may be provided. In this case, it is sufficient that at least one duplexer is connected to the impedance matching element 5 without passing through the second inductor. Even in this case, the number of surface-mount type inductor components can be reduced, and the acoustic wave device 41 can be downsized. In addition, the Q value can be increased.
- FIG. 16 is a schematic diagram of an elastic wave device according to the third embodiment.
- the terminal 4 is connected to the amplifier A indicated by a broken line instead of the antenna.
- One end of the impedance matching element 5 is connected to the amplifier A via the terminal 4.
- the switch 26 is connected to input terminals 2Aa to 2Da, which are terminals on the transmission filter side of the first to fourth duplexers 2A to 2D.
- the output terminals 2Ab to 2Db which are terminals on the reception filter side, are not connected to the switch 26.
- the switch 26 has a plurality of second switch terminals 26b connected to the input terminals 2Aa to 2Da, respectively.
- the impedance matching element 5 and the first inductors 8aB and 8aD perform impedance matching on the amplifier A side of the transmission filters in the first to fourth duplexers 2A to 2D.
- the first duplexer 2A has a common terminal 2Ac to which a transmission filter and a reception filter are connected in common.
- the second to fourth duplexers 2B to 2D also have common terminals 2Bc to 2Dc.
- the common terminals 2Ac to 2Dc are connected to the antenna.
- the common terminals 2Ac to 2Dc may be connected to, for example, a switch that switches a connection state between the antenna and the common terminals 2Ac to 2Dc.
- the elastic wave device 21 includes at least one duplexer and at least one first inductor connected between the switch 26. Therefore, the acoustic wave device 21 can be reduced in size without causing deterioration of impedance matching.
- FIG. 17 is a schematic diagram of an elastic wave device according to the fourth embodiment.
- This embodiment is different from the third embodiment in that output terminals 2Ab to 2Db, which are reception filter side terminals of the first to fourth duplexers 2A to 2D, are connected to the switch 26.
- the input terminals 2Aa to 2Da are not connected to the switch 26.
- the elastic wave device of the present embodiment has the same configuration as the elastic wave device 21 of the third embodiment.
- the impedance matching element 5 and the first inductors 8aB and 8aD perform impedance matching on the amplifier A side of the reception filters in the first to fourth duplexers 2A to 2D.
- the acoustic wave device can be downsized without causing deterioration of impedance matching.
- the multiplexer is not limited to a duplexer, and may be a triplexer or the like.
- Elastic wave device 48bA-48bD Second inductor 51 ... Elastic wave device 61 ... Elastic wave device 73 ... Multilayer substrate 78a ... First inductor 78X ... wiring pattern portion 78Y ... via electrode portion 78Z ... wiring pattern portion 88a ... first inductor 88X ... wiring pattern 96 ... Switch 107 ... capacitor 108 ... inductor
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
Abstract
Description
2A~2D…第1~第4のデュプレクサ
2Aa~2Da…入力端子
2Ab~2Db…出力端子
2Ac~2Dc…共通端子
3…実装基板
4…端子
5…インピーダンス整合素子
6…スイッチ
6a…第1のスイッチ端子
6bA~6bD…第2のスイッチ端子
8aA~8aD…第1のインダクタ
9A~9D…第1~第4の配線
11…弾性波装置
16…スイッチ
17A,17C…コンデンサ
21…弾性波装置
26…スイッチ
26b…第2のスイッチ端子
31…弾性波装置
41…弾性波装置
48bA~48bD…第2のインダクタ
51…弾性波装置
61…弾性波装置
73…積層基板
78a…第1のインダクタ
78X…配線パターン部
78Y…ビア電極部
78Z…配線パターン部
88a…第1のインダクタ
88X…配線パターン部
96…スイッチ
107…コンデンサ
108…インダクタ
Claims (22)
- 一方端と他方端とを有するインピーダンス整合素子と、
前記インピーダンス整合素子の前記他方端に接続されている第1のスイッチ端子と、複数の第2のスイッチ端子と、を有し、前記第1のスイッチ端子と前記複数の第2のスイッチ端子との接続状態を切り替えるスイッチと、
前記複数の第2のスイッチ端子にそれぞれ接続されている複数のマルチプレクサと、
基板と、
前記基板上に設けられており、かつ前記インピーダンス整合素子よりもインダクタンスが小さい、少なくとも1つのインダクタと、
を備え、
少なくとも1つの前記第2のスイッチ端子と、少なくとも1つの前記マルチプレクサとが、前記インダクタを介して接続されている、弾性波装置。 - 前記スイッチが、前記第1のスイッチ端子と、少なくとも1つの前記マルチプレクサとの間に接続されている、少なくとも1つのコンデンサを含む、請求項1に記載の弾性波装置。
- 一方端と他方端とを有するインピーダンス整合素子と、
前記インピーダンス整合素子の前記他方端に接続されている第1のスイッチ端子と、複数の第2のスイッチ端子と、を有し、前記第1のスイッチ端子と前記複数の第2のスイッチ端子との接続状態を切り替えるスイッチと、
前記複数の第2のスイッチ端子にそれぞれ接続されている複数のマルチプレクサと、
を備え、
前記スイッチが、前記第1のスイッチ端子と、少なくとも1つの前記マルチプレクサとの間に接続されている、少なくとも1つのコンデンサを含む、弾性波装置。 - 基板と、
前記基板上に設けられており、かつ前記インピーダンス整合素子よりもインダクタンスが小さい、少なくとも1つのインダクタと、
をさらに備え、
少なくとも1つの前記第2のスイッチ端子と、少なくとも1つの前記マルチプレクサとが、前記インダクタを介して接続されている、請求項3に記載の弾性波装置。 - 前記インダクタのうち少なくとも1つが、前記基板上に設けられた配線パターンを含む第1のインダクタである、請求項1、2及び4のいずれか1項に記載の弾性波装置。
- 前記第1のインダクタが接続されている前記第2のスイッチ端子と前記マルチプレクサとの距離よりも長い配線パターンにより、前記第1のインダクタが構成されている、請求項5に記載の弾性波装置。
- 前記第1のインダクタが、ミアンダ状の形状の配線パターンを含む、請求項6に記載の弾性波装置。
- 前記基板上に積層された少なくとも1つの積層基板をさらに備え、
前記第1のインダクタが、前記基板上及び前記積層基板上に形成された配線パターンからなる配線パターン部と、前記配線パターン部に接続されており、かつ前記積層基板を貫通しているビア電極部と、を有する、請求項5に記載の弾性波装置。 - 前記第1のインダクタが、前記基板及び前記積層基板のうち少なくとも一方に設けられたスパイラル状の形状の配線パターンを含む、請求項8に記載の弾性波装置。
- 前記インダクタのうち少なくとも1つが、表面実装型インダクタ部品である第2のインダクタであり、
少なくとも1つの前記マルチプレクサが、前記第2のインダクタを介さずに前記インピーダンス整合素子に接続されている、請求項1、2、4~9のいずれか1項に記載の弾性波装置。 - 前記インピーダンス整合素子、前記スイッチ、前記インダクタ及び前記複数のマルチプレクサが前記基板上に設けられている、請求項1、2、4~10のいずれか1項に記載の弾性波装置。
- 基板をさらに備え、
前記インピーダンス整合素子、前記スイッチ及び前記複数のマルチプレクサが前記基板上に設けられている、請求項3に記載の弾性波装置。 - 少なくとも1つの前記第2のスイッチ端子と少なくとも1つの前記マルチプレクサとが、コンデンサを介して接続されている、請求項1~12のいずれか1項に記載の弾性波装置。
- 少なくとも1つの前記第2のスイッチ端子及び少なくとも1つの前記マルチプレクサとグラウンド電位との間に、インダクタ及びコンデンサのうち少なくとも一方が接続されている、請求項1~13のいずれか1項に記載の弾性波装置。
- 前記インピーダンス整合素子と前記スイッチとが、インダクタ及びコンデンサのうち少なくとも一方を介して接続されている、請求項1~14のいずれか1項に記載の弾性波装置。
- 前記インピーダンス整合素子及び前記スイッチとグラウンド電位との間に、インダクタ及びコンデンサのうち少なくとも一方が接続されている、請求項1~15のいずれか1項に記載の弾性波装置。
- 前記スイッチにおいて、前記第1のスイッチ端子が1つの前記第2のスイッチ端子に接続される、請求項1~16のいずれか1項に記載の弾性波装置。
- 前記スイッチにおいて、前記第1のスイッチ端子が前記複数の第2のスイッチ端子に接続される、請求項1~16のいずれか1項に記載の弾性波装置。
- 前記インピーダンス整合素子の前記一方端がアンテナに接続される、請求項1~18のいずれか1項に記載の弾性波装置。
- 前記インピーダンス整合素子が前記アンテナと前記第1のスイッチ端子の間に接続される、請求項1~18のいずれか1項に記載の弾性波装置。
- 前記インピーダンス整合素子の前記一方端が増幅器に接続される、請求項1~18のいずれか1項に記載の弾性波装置。
- 前記インピーダンス整合素子が前記増幅器と前記第1のスイッチ端子の間に接続される、請求項1~18のいずれか1項に記載の弾性波装置。
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2018504045A JP6708250B2 (ja) | 2016-03-08 | 2017-01-24 | 弾性波装置 |
| CN201780014117.7A CN108781065B (zh) | 2016-03-08 | 2017-01-24 | 弹性波装置 |
| KR1020187024585A KR102116677B1 (ko) | 2016-03-08 | 2017-01-24 | 탄성파 장치 |
| US16/124,224 US10868518B2 (en) | 2016-03-08 | 2018-09-07 | Elastic wave device |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2016044126 | 2016-03-08 | ||
| JP2016-044126 | 2016-03-08 |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US16/124,224 Continuation US10868518B2 (en) | 2016-03-08 | 2018-09-07 | Elastic wave device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2017154387A1 true WO2017154387A1 (ja) | 2017-09-14 |
Family
ID=59789220
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2017/002348 Ceased WO2017154387A1 (ja) | 2016-03-08 | 2017-01-24 | 弾性波装置 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US10868518B2 (ja) |
| JP (1) | JP6708250B2 (ja) |
| KR (1) | KR102116677B1 (ja) |
| CN (1) | CN108781065B (ja) |
| WO (1) | WO2017154387A1 (ja) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110247669A (zh) * | 2018-03-08 | 2019-09-17 | 株式会社村田制作所 | 复用器以及通信装置 |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102435743B1 (ko) * | 2018-03-29 | 2022-08-24 | 가부시키가이샤 무라타 세이사쿠쇼 | 고주파 모듈 |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001308538A (ja) * | 2000-04-26 | 2001-11-02 | Matsushita Electric Ind Co Ltd | インダクタ内蔵多層配線板 |
| JP2005183890A (ja) * | 2003-12-24 | 2005-07-07 | Taiyo Yuden Co Ltd | 積層基板、複数種類の積層基板の設計方法、及び同時焼結積層基板 |
| WO2012014643A1 (ja) * | 2010-07-27 | 2012-02-02 | 株式会社村田製作所 | 高周波モジュール |
| WO2013002089A1 (ja) * | 2011-06-28 | 2013-01-03 | 株式会社村田製作所 | 高周波モジュール |
Family Cites Families (34)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3900013B2 (ja) * | 2001-07-30 | 2007-04-04 | 株式会社村田製作所 | 弾性表面波分波器、通信装置 |
| JP4291164B2 (ja) | 2004-01-08 | 2009-07-08 | 富士通メディアデバイス株式会社 | 弾性表面波装置 |
| KR100635268B1 (ko) * | 2004-05-17 | 2006-10-19 | 삼성전자주식회사 | 인덕터가 내장된 필터, 듀플렉서 및 그 제조방법 |
| JP2006310904A (ja) * | 2005-04-26 | 2006-11-09 | Hitachi Media Electoronics Co Ltd | 信号回路及びこれを備える情報処理装置 |
| JP2007074698A (ja) * | 2005-08-08 | 2007-03-22 | Fujitsu Media Device Kk | 分波器及びラダー型フィルタ |
| JP5039290B2 (ja) * | 2005-08-25 | 2012-10-03 | 太陽誘電株式会社 | フィルタおよびアンテナ分波器 |
| TW200713681A (en) * | 2005-09-26 | 2007-04-01 | Murata Manufacturing Co | High-frequency front end module, and duplexer |
| US7339445B2 (en) * | 2005-10-07 | 2008-03-04 | Infineon Technologies Ag | BAW duplexer without phase shifter |
| KR101009879B1 (ko) * | 2006-05-08 | 2011-01-19 | 가부시키가이샤 무라타 세이사쿠쇼 | 탄성파 필터장치 및 듀플렉서 |
| CN101197461A (zh) * | 2006-12-08 | 2008-06-11 | 株式会社瑞萨科技 | 电子装置以及rf模块 |
| CN102017408B (zh) * | 2008-05-07 | 2014-04-30 | 株式会社村田制作所 | 弹性波滤波装置 |
| WO2010004686A1 (ja) * | 2008-07-10 | 2010-01-14 | 株式会社村田製作所 | 弾性波装置及びラダー型フィルタ装置 |
| JP5451645B2 (ja) * | 2009-01-29 | 2014-03-26 | 株式会社村田製作所 | デュプレクサモジュール |
| JP5257719B2 (ja) * | 2009-07-02 | 2013-08-07 | 株式会社村田製作所 | 無線通信用高周波回路及び無線通信機 |
| JP2011087282A (ja) * | 2009-09-15 | 2011-04-28 | Murata Mfg Co Ltd | 弾性境界波フィルタ及びそれを備える分波器 |
| JP5071465B2 (ja) * | 2009-11-11 | 2012-11-14 | 株式会社村田製作所 | 高周波モジュール |
| JPWO2011089746A1 (ja) * | 2010-01-20 | 2013-05-20 | 株式会社村田製作所 | 分波器 |
| CN102725959B (zh) * | 2010-01-28 | 2016-05-25 | 株式会社村田制作所 | 可调谐滤波器 |
| CN102823130B (zh) * | 2010-05-13 | 2014-12-10 | 株式会社村田制作所 | 弹性波装置 |
| CN103155427B (zh) | 2010-09-29 | 2015-11-25 | 株式会社村田制作所 | 高频模块 |
| JP5310873B2 (ja) * | 2010-11-09 | 2013-10-09 | 株式会社村田製作所 | 弾性波フィルタ装置 |
| US8633781B2 (en) * | 2010-12-21 | 2014-01-21 | Avago Technologies General Ip (Singapore) Pte. Ltd. | Combined balun and impedance matching circuit |
| JP2012244551A (ja) * | 2011-05-23 | 2012-12-10 | Nippon Dempa Kogyo Co Ltd | デュプレクサの受信側フィルタ及びデュプレクサ |
| WO2013021626A1 (ja) * | 2011-08-08 | 2013-02-14 | パナソニック株式会社 | フィルタモジュール |
| US9166558B2 (en) * | 2011-11-28 | 2015-10-20 | Skyworks Panasonic Filter Solutions Japan Co., Ltd. | High-frequency filter |
| JP5933355B2 (ja) * | 2012-06-12 | 2016-06-08 | 太陽誘電株式会社 | フィルタ及びデュプレクサ |
| JP5597228B2 (ja) * | 2012-07-11 | 2014-10-01 | 株式会社Nttドコモ | フロントエンド回路、インピーダンス調整方法 |
| KR101644380B1 (ko) * | 2012-08-30 | 2016-08-01 | 가부시키가이샤 무라타 세이사쿠쇼 | 탄성파 필터 장치 및 듀플렉서 |
| JP5482972B1 (ja) * | 2012-09-25 | 2014-05-07 | 株式会社村田製作所 | 弾性波フィルタ装置及びデュプレクサ |
| JP5817795B2 (ja) * | 2013-08-06 | 2015-11-18 | 株式会社村田製作所 | 高周波モジュール |
| US9621327B2 (en) * | 2013-09-17 | 2017-04-11 | Skyworks Solutions, Inc. | Systems and methods related to carrier aggregation front-end module applications |
| GB2526197B (en) | 2014-04-11 | 2020-11-18 | Skyworks Solutions Inc | Circuits and methods related to radio-frequency receivers having carrier aggregation |
| US9871646B2 (en) * | 2015-09-30 | 2018-01-16 | Microsoft Technology Licensing, Llc | Front-end circuitry for multiband frequency management |
| US10348339B2 (en) * | 2016-10-28 | 2019-07-09 | Avago Technologies International Sales Pte. Limited | Switched multiplexer device selectively connecting multiple filter circuits to common node for carrier aggregation |
-
2017
- 2017-01-24 WO PCT/JP2017/002348 patent/WO2017154387A1/ja not_active Ceased
- 2017-01-24 JP JP2018504045A patent/JP6708250B2/ja active Active
- 2017-01-24 CN CN201780014117.7A patent/CN108781065B/zh active Active
- 2017-01-24 KR KR1020187024585A patent/KR102116677B1/ko active Active
-
2018
- 2018-09-07 US US16/124,224 patent/US10868518B2/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001308538A (ja) * | 2000-04-26 | 2001-11-02 | Matsushita Electric Ind Co Ltd | インダクタ内蔵多層配線板 |
| JP2005183890A (ja) * | 2003-12-24 | 2005-07-07 | Taiyo Yuden Co Ltd | 積層基板、複数種類の積層基板の設計方法、及び同時焼結積層基板 |
| WO2012014643A1 (ja) * | 2010-07-27 | 2012-02-02 | 株式会社村田製作所 | 高周波モジュール |
| WO2013002089A1 (ja) * | 2011-06-28 | 2013-01-03 | 株式会社村田製作所 | 高周波モジュール |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110247669A (zh) * | 2018-03-08 | 2019-09-17 | 株式会社村田制作所 | 复用器以及通信装置 |
| CN110247669B (zh) * | 2018-03-08 | 2021-03-12 | 株式会社村田制作所 | 复用器以及通信装置 |
Also Published As
| Publication number | Publication date |
|---|---|
| JP6708250B2 (ja) | 2020-06-10 |
| CN108781065B (zh) | 2022-05-17 |
| JPWO2017154387A1 (ja) | 2018-11-29 |
| KR102116677B1 (ko) | 2020-05-29 |
| CN108781065A (zh) | 2018-11-09 |
| US20190007019A1 (en) | 2019-01-03 |
| US10868518B2 (en) | 2020-12-15 |
| KR20180104722A (ko) | 2018-09-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP5262413B2 (ja) | マルチバンドデュプレクサモジュール | |
| US9356576B2 (en) | Filter device | |
| JP6439862B2 (ja) | 高周波フィルタ、フロントエンド回路、および、通信機器 | |
| JP2013062556A (ja) | マルチプレクサ | |
| JP2007060411A (ja) | 分波器 | |
| CN105453430A (zh) | 高频模块 | |
| JP5768951B1 (ja) | フィルタ装置 | |
| JP6411288B2 (ja) | ラダー型フィルタ、分波器およびモジュール | |
| US11239826B2 (en) | Filter device | |
| JP6708250B2 (ja) | 弾性波装置 | |
| JP2023094017A (ja) | フィルタ、マルチプレクサおよび通信用モジュール | |
| JPWO2006040927A1 (ja) | 分波器 | |
| JP5955095B2 (ja) | 弾性波装置 | |
| JP4663770B2 (ja) | 弾性波デバイス | |
| US8400236B2 (en) | Electronic component | |
| WO2015098240A1 (ja) | フィルタ装置およびデュプレクサ | |
| JPWO2006040923A1 (ja) | 分波器 | |
| WO2018003378A1 (ja) | フィルタ装置およびマルチプレクサ | |
| WO2017208856A1 (ja) | 弾性波フィルタ装置 | |
| JP4656514B2 (ja) | 平衡−不平衡変換回路及びこれを用いた高周波部品 | |
| JP6566170B2 (ja) | マルチプレクサ、高周波フロントエンド回路及び通信装置 | |
| JP5849660B2 (ja) | フィルタ回路 | |
| JP2012156881A (ja) | フィルタ及び電子部品 | |
| JP2013138054A (ja) | 配線基板 |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WWE | Wipo information: entry into national phase |
Ref document number: 2018504045 Country of ref document: JP |
|
| ENP | Entry into the national phase |
Ref document number: 20187024585 Country of ref document: KR Kind code of ref document: A |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 1020187024585 Country of ref document: KR |
|
| NENP | Non-entry into the national phase |
Ref country code: DE |
|
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 17762733 Country of ref document: EP Kind code of ref document: A1 |
|
| 122 | Ep: pct application non-entry in european phase |
Ref document number: 17762733 Country of ref document: EP Kind code of ref document: A1 |