WO2010044373A1 - Lcフィルタおよび高周波スイッチモジュール - Google Patents
Lcフィルタおよび高周波スイッチモジュール Download PDFInfo
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- WO2010044373A1 WO2010044373A1 PCT/JP2009/067602 JP2009067602W WO2010044373A1 WO 2010044373 A1 WO2010044373 A1 WO 2010044373A1 JP 2009067602 W JP2009067602 W JP 2009067602W WO 2010044373 A1 WO2010044373 A1 WO 2010044373A1
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- inductor
- electrode
- insulating layers
- input
- filter
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/10—Auxiliary devices for switching or interrupting
- H01P1/15—Auxiliary devices for switching or interrupting by semiconductor devices
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/20—Frequency-selective devices, e.g. filters
- H01P1/201—Filters for transverse electromagnetic waves
- H01P1/203—Strip line filters
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- 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
- H03H7/01—Frequency selective two-port networks
- H03H7/075—Ladder networks, e.g. electric wave filters
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- 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
- H03H7/01—Frequency selective two-port networks
- H03H7/17—Structural details of sub-circuits of frequency selective networks
- H03H7/1741—Comprising typical LC combinations, irrespective of presence and location of additional resistors
- H03H7/1758—Series LC in shunt or branch path
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- 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
- H03H7/01—Frequency selective two-port networks
- H03H7/17—Structural details of sub-circuits of frequency selective networks
- H03H7/1741—Comprising typical LC combinations, irrespective of presence and location of additional resistors
- H03H7/1766—Parallel LC in series path
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- 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
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H1/00—Constructional details of impedance networks whose electrical mode of operation is not specified or applicable to more than one type of network
- H03H2001/0021—Constructional details
- H03H2001/0085—Multilayer, e.g. LTCC, HTCC, green sheets
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- 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
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
- H04B1/44—Transmit/receive switching
- H04B1/48—Transmit/receive switching in circuits for connecting transmitter and receiver to a common transmission path, e.g. by energy of transmitter
Definitions
- the present invention relates to an LC filter including an inductor and a capacitor, and a high-frequency switch module including the LC filter.
- transmission / reception is performed using different frequency bands such as GSM850 MHz (near transmission / reception band 850 MHz), GSM900 MHz (near transmission / reception band 900 MHz), GSM1800 MHz (near transmission / reception band 1800 MHz), and GSM1900 MHz (near transmission / reception band 1900 MHz).
- the specification includes a transmission frequency band and a reception frequency band.
- Patent Document 1 a high frequency switch module as shown in Patent Document 1 is connected to the antenna.
- the high-frequency switch module disclosed in Patent Document 1 switches between transmission and reception of a first frequency signal that is transmitted and received via the Tx1 terminal and the Rx1 terminal and a second frequency signal that is transmitted and received via the Tx2 terminal and the Rx2 terminal. It is.
- the high-frequency switch module of Patent Document 1 includes a diplexer DP, switch circuits SW1 and SW2, and low-pass filters LPF1 and LPF2 as functional units.
- a diplexer DP is connected to the antenna, and switch circuits SW1 and SW2 are connected to the diplexer DP.
- LPF1 is connected to the Tx1 terminal (transmission signal input terminal) side of the switch circuit SW1
- LPF2 is connected to the Tx2 terminal (transmission signal input terminal) side of the switch circuit SW2.
- Such a high-frequency switch module is provided with various LC filters in which an inductor and a capacitor are combined in order to constitute each of the functional units described above.
- the high frequency switch module as described above is generally formed into a laminated module. That is, in a laminated body in which a plurality of insulating layers are laminated, a predetermined electrode pattern is formed between the insulating layers to form an inductor or capacitor, or by mounting a SAW filter, coil, or capacitor on the upper surface of the laminated body, A high frequency switch module is formed. For this reason, the LC filter, which is a component of the high-frequency switch module, is similarly formed by an electrode pattern or the like inside the laminate.
- the multiband high-frequency switch module as described above, it is desired that signals of even more frequency bands can be transmitted and received by one antenna.
- downsizing is required with the downsizing of electronic devices such as mobile phones to which the module is mounted.
- the high-frequency switch module includes a plurality of LC filters. If the frequency band to be handled increases, the number of LC filters increases according to the number of increases, and the configuration of inductors and capacitors constituting the LC filter. The number also increases.
- the transmission circuit has a configuration in which a plurality of stages of LC parallel resonance circuits are connected in series on the signal transmission line in order to remove high-order harmonics from the power amplifier, etc.
- the required number of LC filters, inductors and capacitors will increase. Since these inductors and capacitors are composed of the electrode patterns formed in the multilayer body as described above, if the number of inductors and capacitors increases, a space for forming them will be required, and miniaturization will be difficult.
- an object of the present invention is to form an LC filter composed of an inductor and a capacitor formed inside a multilayer body in a small size.
- the present invention includes a plurality of stacked insulating layers, an electrode pattern formed at least between the plurality of insulating layers, and a through-hole electrode that connects the electrode patterns between the insulating layers in the stacking direction.
- the present invention relates to an LC filter in which an inductor and a capacitor are formed from a pattern and a through-hole electrode.
- the inductor of this LC filter is connected to the main function electrode formed from a plurality of electrode patterns and through-hole electrodes formed between a plurality of insulating layers, and to both ends of the main function electrode.
- a plurality of electrode patterns forming input / output function electrodes arranged between different insulating layers, respectively, in plan view along the stacking direction. The parts are formed so as to overlap.
- the pair of input / output function electrodes that overlap in a plan view along the stacking direction become the counter electrode of the capacitor, and the insulating layer sandwiched between the pair of input / output electrodes is an insulator between the counter electrodes ( Dielectric).
- Dielectric insulator between the counter electrodes
- the present invention also includes a plurality of stacked insulating layers, at least an electrode pattern formed between the plurality of insulating layers, and a through-hole electrode that connects the electrode patterns between the insulating layers in the stacking direction.
- the present invention relates to an LC filter in which an inductor and a capacitor are formed from an electrode pattern and the through-hole electrode.
- a plurality of inductors are provided, and the plurality of inductors are connected in series on an electric circuit.
- Each of the plurality of inductors is formed by a plurality of electrode patterns formed between a plurality of insulating layers and the through-hole electrodes. Then, the electrode pattern of the first inductor and the electrode pattern of the second inductor which are adjacent in series are formed so as to partially overlap in a state viewed in plan along the stacking direction.
- the second inductor and the first inductor partially overlap each other in plan view along the stacking direction.
- the capacitor connected in parallel to the first inductor or the second inductor is configured without separately forming a capacitor-dedicated electrode.
- the first inductor and the second inductor are each composed of a plurality of electrode patterns formed between a plurality of insulating layers and the through hole electrode. And an input / output function unit comprising electrode patterns connected to both ends of the main function unit and formed between different insulating layers. Then, the input / output function part of the first inductor opposite to the connection with the second inductor and the input / output function part of the second inductor on the connection side with the first inductor are planar along the stacking direction. It is formed so that at least a part thereof overlaps as viewed.
- the first inductor and the second inductor are each composed of a plurality of electrode patterns and through-hole electrodes formed between a plurality of insulating layers. And an input / output function unit comprising electrode patterns connected to both ends of the main function unit and formed between different insulating layers. Then, the main function portion of the first inductor and the main function portion of the second inductor are formed so as to overlap at least partially in plan view along the stacking direction.
- each of the first inductor and the second inductor includes a main function portion formed of a plurality of electrode patterns and through-hole electrodes formed between a plurality of insulating layers. And an input / output function unit comprising electrode patterns connected to both ends of the main function unit and formed between different insulating layers.
- the input / output function part of the first inductor opposite to the connection with the second inductor and the main function part of the second inductor are planarly viewed along the stacking direction so that at least a part thereof overlaps.
- These configurations show specific examples of a configuration in which the first inductor and the second inductor shown in (2) above partially overlap.
- the first inductor-side input / output function electrode in the second inductor that is, the second inductor-side input / output electrode in the first inductor
- the first inductor in the first inductor overlap each other in plan view along the stacking direction.
- the capacitor connected in parallel to the first inductor is configured without separately forming an electrode dedicated to the capacitor.
- the present invention is a high frequency device including a low-pass filter including an inductor connected in the signal path of a transmission signal, wherein a plurality of signals using different frequency bands are transmitted and received by one antenna. It relates to a switch module. Then, the low-pass filter of the high-frequency switch module is formed by the above-described LC filter (1).
- the present invention includes a low-pass filter including a plurality of inductors connected in series in a signal path of a transmission signal, wherein a plurality of signals using different frequency bands are transmitted and received by one antenna.
- the present invention also relates to a high frequency switch module. Then, the low-pass filter of the high-frequency switch module is formed by any one of the LC filters (2) to (5) described above.
- the low-pass filter of the high-frequency switch module formed using the laminated body is configured by the above-described LC filter, so that a parallel resonant circuit of an inductor and a capacitor, which are components of the low-pass filter, can be obtained. It is formed only by the pattern electrode of the inductor. As a result, a low-pass filter is formed, and miniaturization is realized even in a high-frequency switch module that requires a plurality of the low-pass filters.
- an LC filter having an inductor and a capacitor formed by an insulating layer and an electrode pattern constituting a multilayer body can be formed in a small size.
- FIG. 2 is a block diagram in which a portion of a low-pass filter LPF2 in FIG.
- the inductors DLt1 and DLt2 and the capacitor DCc1 are overlapped in a plan view, and the inductors DLt1 and DLt2 and the capacitors DCc1 and DCc2 in the high-frequency switch module in which the conventional capacitor DCc2 is not simplified
- FIG. 1 is a block diagram showing the configuration of the high-frequency switch module of the present embodiment.
- FIG. 2 is a wiring diagram of the pattern electrodes of the laminated body constituting the high-frequency switch module of the present embodiment. Each square in FIG. 2 shows the pattern of each layer constituting the laminated body, and (1) to (20) are The first layer (lowermost layer) to the twentieth layer (uppermost layer) are shown in the stacking direction with reference to the lower layer side of the stacked body.
- (1) is a view seen from the lower surface side of the first layer, that is, the bottom surface of the laminate
- the other (2) to (20) are views seen from the upper surface side of the second layer to the 20th layer. It is.
- the circle in each layer in the figure indicates a through hole.
- This high frequency switch module inputs a GSM850 MHz transmission signal or a GSM900 MHz transmission signal from the transmission signal input terminal Tx10, outputs a GSM850 MHz reception signal from the reception signal output terminal Rx11, and outputs a GSM900 MHz reception signal from the reception signal output terminal Rx12.
- the high frequency switch module receives a GSM1800 MHz transmission signal or a GSM1900 MHz transmission signal from the transmission signal input terminal Tx20, outputs a GSM1800 MHz reception signal from the reception signal output terminal Rx21, and outputs a GSM1900 MHz reception signal from the reception signal output terminal Rx22.
- the high-frequency switch module 1 of the present embodiment is composed of a laminated body in which a plurality of insulating layers are laminated.
- Each circuit element of the high-frequency switch module 1 is formed by an electrode pattern and a through-hole electrode formed in each insulating layer, or realized by a discrete component mounted on the top surface of the laminate.
- the high-frequency switch module 1 includes a diplexer DPX, switch circuits SW1 and SW2, low-pass filters (low-pass filters) LPF1 and LPF2, and SAW filters SAW1 and SAW2.
- the diplexer DPX of the high-frequency switch module is composed of a low-pass filter LPF0 and a high-pass filter HPF0.
- the low-pass filter LPF0 is connected to the antenna terminal ANT and the switch circuit SW1, passes the GSM850 MHz signal and the GSM900 MHz signal, and blocks the GSM1800 MHz signal and the GSM1900 MHz signal.
- the high pass filter HPF0 is connected to the antenna terminal ANT and the switch circuit SW2, passes the GSM1800 MHz signal and the GSM1900 MHz signal, and blocks the GSM850 MHz signal and the GSM900 MHz signal.
- the GSM850 MHz signal and the GSM900 MHz signal are transmitted and received on the low pass filter LPF0 side of the diplexer DPX, and the GSM1800 MHz signal and the GSM1900 MHz signal are transmitted and received on the highpass filter HPF0 side.
- the low-pass filter LPF0 includes an inductor Lt1 connected to the antenna terminal ANT and the switch circuit SW1.
- a capacitor Ct1 is connected in parallel to the inductor Lt1, and a parallel resonance circuit is configured.
- the switch circuit SW1 side of this parallel resonant circuit is connected to the ground via a capacitor Cu1.
- a low-pass filter using an LC filter is configured.
- the inductor Lt1 and the capacitors Ct1 and Cu1 are configured by an electrode pattern, a through-hole electrode, and an insulating layer formed inside the multilayer body that constitutes the high-frequency switch module 1.
- the high pass filter HPF0 includes capacitors Cc1 and Cc2 connected in series between the antenna terminal ANT and the switch circuit SW2.
- the connection point of these capacitors Cc1 and Cc2 is connected to the ground via a series circuit of an inductor Lt2 and a capacitor Ct2.
- the capacitors Cc1, Cc2, Ct2 and the inductor Lt2 are constituted by an electrode pattern, a through-hole electrode and an insulating layer formed inside the multilayer body constituting the high frequency switch module 1.
- the switch circuit SW1 switches between a transmission state in which the diplexer DPX and the low-pass filter LPF1 are electrically connected and a reception state in which the diplexer DPX and the SAW filter SAW1 are electrically connected based on an external control signal.
- the switch circuit SW1 is a so-called diode switch circuit.
- Each circuit element constituting the diode switch circuit is constituted by an electrode pattern, a through-hole electrode and an insulating layer formed in the laminated body, or by a discrete component mounted on the top surface of the laminated body.
- the low-pass filter LPF1 is connected to the transmission signal input terminal Tx10 and to the switch circuit SW1.
- the low-pass filter LPF1 includes an inductor GLt1 connected to the transmission signal input terminal Tx10 and the switch circuit SW1.
- a capacitor GCc1 is connected in parallel to the inductor GLt1, and a parallel resonance circuit is configured.
- the switch circuit SW1 side of this parallel resonant circuit is connected to the ground via a capacitor GCu1.
- the inductor GLt1 and the capacitors GCu1 and GCc1 are constituted by an electrode pattern, a through-hole electrode and an insulating layer formed inside the laminate constituting the high frequency switch module 1, or are discrete components mounted on the top surface of the laminate. Consists of.
- the SAW filter SAW1 includes two balanced-unbalanced SAW filters, passes the GSM850 MHz reception signal input as an unbalanced signal from the switch circuit SW1, converts it to a balanced signal, and outputs it to the received signal output terminal Rx11.
- the SAW filter SAW1 passes the GSM 900 MHz reception signal input as an unbalanced signal from the switch circuit SW1, converts it to a balanced signal, and outputs it to the reception signal output terminal Rx12.
- the switch circuit SW2 switches between a transmission state in which the diplexer DPX and the low-pass filter LPF2 are electrically connected and a reception state in which the diplexer DPX and the SAW filter SAW2 are electrically connected based on an external control signal.
- the switch circuit SW2 is also a so-called diode switch circuit.
- Each circuit element constituting the diode switch circuit is constituted by an electrode pattern, a through-hole electrode and an insulating layer formed in the laminated body, or by a discrete component mounted on the top surface of the laminated body.
- the low-pass filter LPF2 is connected to the transmission signal input terminal Tx20 and to the switch circuit SW2.
- the low-pass filter LPF2 includes inductors DLt1 and DLt2 connected in series between the switch circuit SW2 and the transmission signal input terminal Tx20.
- a capacitor DCc1 is connected in parallel to the inductor DLt1, and a parallel resonance circuit is configured.
- the switch circuit SW2 side of this parallel resonant circuit is connected to the ground via a capacitor DCu1.
- a capacitor DCc2 is connected in parallel to the inductor DLt2, and a parallel resonance circuit is configured.
- the switch circuit SW2 side (inductor DLt1 side) of this parallel resonant circuit is connected to the ground via a capacitor DCu2.
- the two-stage low-pass filter By configuring the two-stage low-pass filter in this way, a sufficient amount of attenuation can be obtained in the frequency bands of these second and third harmonics while passing the GSM 1800 MHz transmission signal and the GSM 1900 MHz transmission signal.
- a low-pass filter can be configured. With this configuration, the low-pass filter LPF2 removes harmonic components of the transmission signal (GSM1800 MHz transmission signal or GSM1900MHZ transmission signal) input from the transmission signal input terminal Tx20, and outputs it to the switch circuit SW2 side.
- inductors DLt1, DLt2 and capacitors DCc1, DCc2, DCu1, DCc1 are constituted by an electrode pattern, a through-hole electrode and an insulating layer formed inside the laminate constituting the high-frequency switch module 1.
- the SAW filter SAW2 includes two balanced-unbalanced SAW filters, passes the GSM1800 MHz reception signal input as an unbalanced signal from the switch circuit SW2, converts it to a balanced signal, and outputs it to the received signal output terminal Rx21.
- the SAW filter SAW2 passes the GSM 1900 MHz reception signal input as an unbalanced signal from the switch circuit SW2, converts it to a balanced signal, and outputs it to the reception signal output terminal Rx22.
- the high-frequency switch module 1 has a structure in which 20 insulating layers are stacked, and in order to realize each circuit element described above, each of the insulating layers is a through-hole that connects predetermined electrode patterns in the stacking direction. A hole is formed.
- FIG. 3A is a block diagram in which the portion of the low-pass filter LPF2 in FIG. 1 is enlarged
- FIG. 3B is a diagram showing the portions of the inductors DLt1 and DLt2 of the low-pass filter LPF2 in the laminate constituting the high-frequency switch module 1. It is the enlarged pattern figure seen along the lamination direction.
- the low-pass filter LPF2 includes two parallel resonant circuits 100 and 200.
- the parallel resonant circuits 100 and 200 are connected in series between the transmission signal input terminal Tx20 and the switch circuit SW2.
- the parallel resonant circuit 100 is a parallel circuit of an inductor DLt1 and a capacitor DCc1
- the parallel resonant circuit 200 is a parallel circuit of an inductor DLt2 and a capacitor DCc2.
- the inductor DLt1 of the parallel resonant circuit 100 is formed by electrode patterns formed in the insulating layers 10, 11, and 12 and through-hole electrodes that conduct these electrode patterns in the stacking direction.
- the inductor DLt1 is formed in a spiral shape with the lamination direction as an axial direction by these electrode patterns and through-hole electrodes.
- This spiral-shaped portion becomes the main function electrode 101 that mainly generates inductance.
- the electrode pattern formed on the insulating layer 10 connected to the spiral main function electrode 101 becomes the input / output function electrode 102, and connected to the spiral main function electrode 101 and formed on the insulating layer 12.
- the electrode pattern becomes the input / output function electrode 103.
- the capacitor DCc1 of the parallel resonant circuit 100 is formed by using the pattern electrode formed on the insulating layers 16 and 17 as a counter electrode.
- the inductor DLt2 of the parallel resonant circuit 200 is formed of electrode patterns formed in the insulating layers 9, 10, 11, and 12 and through-hole electrodes that conduct these electrode patterns in the stacking direction.
- the inductor DLt2 is formed in a spiral shape with the lamination direction as an axial direction by these electrode patterns and through-hole electrodes.
- This spiral-shaped portion is the main function electrode 201 that mainly generates inductance.
- the electrode pattern formed on the insulating layer 12 connected to the spiral main function electrode 201 becomes the input / output function electrode 202, and connected to the spiral main function electrode 201 and formed on the insulating layer 9.
- the electrode pattern becomes the input / output function electrode 203.
- the input / output functional electrode 202 of the inductor DLt2 formed in the insulating layer 12 and the input / output functional electrode 102 of the inductor DLt1 formed in the insulating layer 10 are arranged along the stacking direction as shown in FIG. Are formed so as to partially overlap in a state seen from above (plan view state).
- the input / output function electrode 202 and the input / output function electrode 102 corresponding to the overlapping portion in a plan view state are opposed to each other through the insulating layer.
- the capacitor DCc2 is formed which uses the input / output function electrodes 202 and 102 as counter electrodes and is connected to both ends of the inductor DLt2.
- the capacitance of the capacitor DCc2 can be adjusted by adjusting the area of the overlapping portion and the number of insulating layers to be inserted.
- the capacitor DCc2 constituting the parallel resonant circuit 200 can be formed without forming a separate pattern electrode in the stacked body.
- the LC filter formed in the laminated body can be reduced in space and formed in a small size.
- the high-frequency switch module including the LC filter can also be reduced in size.
- the electrode pattern for LC filter can be reduced, the freedom degree of design of the electrode pattern as a high frequency switch module improves.
- FIG. 4A is a diagram illustrating an overlapping state of the inductors DLt1 and DLt2 and the capacitor DCc1 in a plan view in the high-frequency switch module 1 of the present embodiment
- FIG. 4B is a simplified diagram of the conventional capacitor DCc2. It is a figure which shows the overlap state in the planar view state of inductor DLt1, DLt2 and capacitor DCc1, DCc2 in the high frequency switch module which is not performed.
- the capacitors DCc1 and DCc2 must be formed with dedicated electrode patterns, and the electrode patterns in the laminated body are routed and the laminated body is downsized. For this reason, dedicated electrode patterns for the capacitors DCc1 and DCc2 are arranged in regions on the axes of the inductors DLt1 and DLt2 in an insulating layer different from the inductors DLt1 and DLt2. When such an arrangement is performed, the magnetic flux of the inductor is disturbed by the electrode patterns dedicated to the capacitors DCc1 and DCc2, and the Q of the inductor is lowered. In order to solve this, electrode patterns dedicated to the capacitors DCc1 and DCc2 have to be formed in other parts of the laminated body, but are often difficult to form for the reasons described above.
- the capacitor DCc2 does not need to be formed with a dedicated electrode pattern, so the capacitor DCc2 is arranged so as to cover the region on the axis of the inductor. Therefore, it is possible to prevent the deterioration of the inductor characteristics as described above. In this case, in order to further improve the characteristics of the inductor, it is only necessary to change the formation position of the dedicated electrode pattern of the capacitor DCc1.
- the electrode pattern dedicated to the capacitor DCc2 is not formed, and the degree of freedom in designing the electrode pattern in the stacked body is improved as compared with the conventional configuration. It is also possible to easily change the position of the electrode pattern dedicated to the capacitor DCc1.
- the low-pass filter LPF2 is downsized.
- a capacitor connected in parallel to the inductor can be formed by the input / output function electrodes of the inductor. it can.
- the input / output function electrodes at both ends sandwiching the main function electrode of the inductor may be formed so as to partially overlap in a plan view.
- the high-frequency switch module including the LC filter is illustrated as an example.
- the LC filter including the parallel resonance circuit and the circuit including the LC filter may be formed of a laminated body.
- the above-described configuration can be applied.
- the high-frequency switch module of the present embodiment has the same circuit configuration as the high-frequency switch module shown in the first embodiment, and has a different circuit formation pattern in a laminated body state. Therefore, only the circuit formation pattern in the laminated body, particularly the portions of the inductors DLt1 and DLt2 of the low-pass filter LPF2 will be described.
- FIG. 5 is a pattern wiring diagram of the laminate constituting the high-frequency switch module of the present embodiment.
- FIG. 6 is an enlarged pattern diagram in which the portions of the inductors DLt1 and DLt2 of the low-pass filter LPF2 in the multilayer body constituting the high-frequency switch module of this embodiment are viewed along the stacking direction.
- the high-frequency switch module has a structure in which 26 insulating layers are stacked, and in the same manner as in the first embodiment, each of the insulating layers has an electrode pattern for realizing each circuit element described above. And the through hole which connects predetermined electrode patterns to the lamination direction is formed.
- the inductor DLt1 of the parallel resonant circuit 100 is formed of electrode patterns formed on the insulating layers 16, 17, 18, and 19 in the 26-layer laminate and through-hole electrodes that conduct these electrode patterns in the stacking direction.
- the inductor DLt1 is formed in a spiral shape with the lamination direction as an axial direction by these electrode patterns and through-hole electrodes.
- This spiral portion is the main function electrode 101 'that mainly generates inductance.
- the electrode pattern formed on the insulating layer 16 connected to the spiral main function electrode 101 ′ becomes the input / output function electrode 102 ′, connected to the spiral main function electrode 101 ′, and connected to the insulating layer 19.
- the formed electrode pattern becomes the input / output function electrode 103 ′.
- the inductor DLt2 of the parallel resonant circuit 200 is formed of electrode patterns formed in the insulating layers 13, 14, and 15 and through-hole electrodes that conduct these electrode patterns in the stacking direction.
- the inductor DLt2 is formed in a spiral shape with the lamination direction as an axial direction by these electrode patterns and through-hole electrodes.
- This spiral portion is the main function electrode 201 'that mainly generates inductance.
- the electrode pattern connected to the spiral main function electrode 201 ′ and formed on the insulating layer 13 becomes the input / output function electrode 202 ′.
- the end of the main function electrode 201 'opposite to the input / output function electrode 202' is a connection end to the inductor DLt1 and functions as a spiral end.
- the main functional electrode 201 ′ of the inductor DLt2 formed on the insulating layer 14 and the main functional electrode 101 ′ of the inductor DLt1 formed on the insulating layer 16 were viewed along the stacking direction as shown in FIG. It forms so that it may overlap partially in a state (plan view state).
- the main function electrode 201 ′ and the main function electrode 101 ′ corresponding to the overlapping portion in a plan view face each other through the insulating layer.
- capacitors DCc2 are formed which are connected to both ends of the inductor DLt2 using the main function electrodes 201 'and 101' as counter electrodes. At this time, the capacitance of the capacitor DCc2 can be adjusted by adjusting the area of the overlapping portion and the number of insulating layers to be inserted.
- the capacitor DCc2 constituting the parallel resonant circuit 200 can be formed without forming a separate pattern electrode in the multilayer body. That is, as shown in the first embodiment, the input / output function electrodes different from the main function electrode portions (spiral shape portions) of the inductors are not opposed to each other, but the main function electrodes of the inductors are opposed to each other. However, a capacitor can be formed. At this time, either one may be a main function electrode and the other may be an input / output function electrode. In other words, the electrodes forming the two inductors only need to be formed so that one of the regions of the electrode patterns forming the two inductors faces each other.
- the LC filter formed inside the laminate can be reduced in size and can be formed in a small size.
- the high-frequency switch module including the LC filter can also be reduced in size.
- the electrode pattern for LC filter can be reduced, the freedom degree of design of the electrode pattern as a high frequency switch module improves.
- 1-high frequency switch module 100, 200-parallel resonant circuit, DLt1, DLt2-inductor, 101, 101 ′, 201, 201′—main function electrode of inductor, 102, 102 ′, 103, 103 ′, 202, 202 ′ , 203-I / O function electrodes of inductor, DCc1, DCc2-capacitor
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Abstract
Description
図1は、本実施形態の高周波スイッチモジュールの構成を示すブロック図である。
図2は、本実施形態の高周波スイッチモジュールを構成する積層体のパターン電極の配線図であり、図2における各マスが積層体を構成する各層のパターンを示し、(1)~(20)が積層体の下層側を基準にて積層方向に第1層(最下層)~第20層(最上層)を示す。この際、(1)は、第1層の下面側すなわち積層体の底面から見た図であり、他の(2)~(20)は第2層~第20層の上面側から見た図である。なお、図中の各層における丸印はスルーホールを示す。
Claims (7)
- 積層された複数の絶縁層と、少なくとも該複数の絶縁層間に形成された電極パターンと、該絶縁層間の電極パターンを積層方向に接続するスルーホール電極とを備え、前記電極パターンと前記スルーホール電極とからインダクタおよびキャパシタを形成してなるLCフィルタであって、
前記インダクタは、複数の絶縁層間に形成された複数の電極パターンおよび前記スルーホール電極から形成される主機能部と、該主機能部の両端に接続し、それぞれに異なる絶縁層間に形成された電極パターンからなる入出力機能部とを有し、
それぞれに異なる絶縁層間に配置された入出力機能部を形成する複数の電極パターン同士を、前記積層方向に沿って平面視して少なくとも一部が重なり合うように形成する、LCフィルタ。 - 積層された複数の絶縁層と、少なくとも該複数の絶縁層間に形成された電極パターンと、該絶縁層間の電極パターンを積層方向に接続するスルーホール電極とを備え、前記電極パターンと前記スルーホール電極とからインダクタおよびキャパシタを形成してなるLCフィルタであって、
前記インダクタは複数備えられ、且つ該複数のインダクタは電気回路上で直列接続されており、
前記複数のインダクタは、それぞれが、複数の絶縁層間に形成された複数の電極パターンおよび前記スルーホール電極から形成され、
前記直列接続で隣り合う第1のインダクタの電極パターンと第2のインダクタの電極パターンとが、前記積層方向に沿って平面視した状態で、部分的に重なり合うように形成されている、LCフィルタ。 - 前記第1のインダクタおよび前記第2のインダクタは、それぞれが、複数の絶縁層間に形成された複数の電極パターンおよび前記スルーホール電極から形成される主機能部と、該主機能部の両端に接続し、それぞれに異なる絶縁層間に形成された電極パターンからなる入出力機能部とを有し、
前記第1のインダクタにおける前記第2のインダクタとの接続と反対側の入出力機能部と、前記第2のインダクタの前記第1のインダクタとの接続側の入出力機能部とを前記積層方向に沿って平面視して少なくとも一部が重なり合うように形成する、請求項2に記載のLCフィルタ。 - 前記第1のインダクタおよび前記第2のインダクタは、それぞれが、複数の絶縁層間に形成された複数の電極パターンおよび前記スルーホール電極から形成される主機能部と、該主機能部の両端に接続し、それぞれに異なる絶縁層間に形成された電極パターンからなる入出力機能部とを有し、
前記第1のインダクタの主機能部と、前記第2のインダクタの主機能部とを前記積層方向に沿って平面視して少なくとも一部が重なり合うように形成する、請求項2に記載のLCフィルタ。 - 前記第1のインダクタおよび前記第2のインダクタは、それぞれが、複数の絶縁層間に形成された複数の電極パターンおよび前記スルーホール電極から形成される主機能部と、該主機能部の両端に接続し、それぞれに異なる絶縁層間に形成された電極パターンからなる入出力機能部とを有し、
前記第1のインダクタにおける前記第2のインダクタとの接続と反対側の入出力機能部と、前記第2のインダクタの主機能部とを前記積層方向に沿って平面視して少なくとも一部が重なり合うように形成する、請求項2に記載のLCフィルタ。 - それぞれに異なる周波数帯域を用いた複数の信号を一つのアンテナで送受信し、送信信号の信号経路中に接続されたインダクタを含む低域通過フィルタを備えた、高周波スイッチモジュールであって、
前記低域通過フィルタを、請求項1に記載のLCフィルタにより形成する、高周波スイッチモジュール。 - それぞれに異なる周波数帯域を用いた複数の信号を一つのアンテナで送受信し、送信信号の信号経路中に直列接続された複数のインダクタを含む低域通過フィルタを備えた、高周波スイッチモジュールであって、
前記低域通過フィルタを、請求項2~請求項5のいずれかに記載のLCフィルタにより形成する、高周波スイッチモジュール。
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JPH02256207A (ja) * | 1989-03-29 | 1990-10-17 | Murata Mfg Co Ltd | Lc複合部品 |
JP2004364051A (ja) * | 2003-06-05 | 2004-12-24 | Murata Mfg Co Ltd | 高周波モジュールおよび通信装置 |
JP2005303419A (ja) * | 2004-04-07 | 2005-10-27 | Alps Electric Co Ltd | ダイプレクサ |
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JPH0744114B2 (ja) * | 1988-12-16 | 1995-05-15 | 株式会社村田製作所 | 積層チップコイル |
JP2003158437A (ja) * | 2001-09-06 | 2003-05-30 | Murata Mfg Co Ltd | Lcフィルタ回路、積層型lcフィルタ、マルチプレクサおよび無線通信装置 |
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JPH02256207A (ja) * | 1989-03-29 | 1990-10-17 | Murata Mfg Co Ltd | Lc複合部品 |
JP2004364051A (ja) * | 2003-06-05 | 2004-12-24 | Murata Mfg Co Ltd | 高周波モジュールおよび通信装置 |
JP2005303419A (ja) * | 2004-04-07 | 2005-10-27 | Alps Electric Co Ltd | ダイプレクサ |
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