WO2014097768A1 - スイッチモジュールおよび無線通信機器 - Google Patents
スイッチモジュールおよび無線通信機器 Download PDFInfo
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- WO2014097768A1 WO2014097768A1 PCT/JP2013/080384 JP2013080384W WO2014097768A1 WO 2014097768 A1 WO2014097768 A1 WO 2014097768A1 JP 2013080384 W JP2013080384 W JP 2013080384W WO 2014097768 A1 WO2014097768 A1 WO 2014097768A1
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- switch
- signal
- switches
- communication
- communication signal
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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
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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
- H04B1/005—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
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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
- H04B1/02—Transmitters
- H04B1/04—Circuits
- H04B1/0458—Arrangements for matching and coupling between power amplifier and antenna or between amplifying stages
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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
- H04B1/06—Receivers
- H04B1/16—Circuits
- H04B1/18—Input circuits, e.g. for coupling to an antenna or a transmission line
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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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
- H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
Definitions
- the present invention relates to a switch module that can handle transmission / reception of multiband communication signals and a wireless communication device including the switch module.
- the switch module 100 is a module that supports transmission / reception of 2.4 GHz band communication signals and transmission / reception of 5 GHz band communication signals, and includes a front end circuit 102 a for 2.4 GHz band and a front end circuit 102 b for 5 GHz band. And a band-pass filter 103 common to both front-end circuits, and a switch 104 that selectively connects one of the front-end circuits 102 a and 102 b to the common antenna 101 and the band-pass filter 103.
- the front end circuit 102b for the 5 GHz band includes the local-use VCO 105b, the up-conversion mixer 106b1 at the time of transmission, the down-conversion mixer 106b2 at the time of reception, the power amplifier 107b1 for transmission, and the low-power for reception
- a noise amplifier 107b2 and a transmission / reception switching switch 108b are included.
- the switch module 100 when a communication signal is input to a switch or duplexer, the harmonics of the signal (for example, second harmonic and third harmonic) are generated as spurious.
- the switch module 100 that handles a plurality of communication signals having different frequency bands as described above, harmonic components generated at the time of switch input of the communication signal interfere with other communication signals, and the other communication There was a risk of deteriorating the communication characteristics of the signal. Therefore, in the above-described switch module 100, the switch 104 is provided, and the switches 108a and 108b are individually provided for both the front end circuits 102a and 102b, so that the signal path of the 2.4 GHz band communication signal and the 5 GHz band communication are provided. The signal paths of the signals are arranged apart from each other to prevent the communication signals of both bands from interfering with each other.
- the switches 108a and 108b are provided for both front-end circuits 102a and 102b through which communication signals of different frequency bands are transmitted. It is difficult to meet the demand for module miniaturization and simplification. Therefore, in order to reduce the size and simplification of the switch module, it is conceivable to configure the switch portions 104, 108a, and 108b provided for each different band with a single IC. A plurality of switch portions 104, 108a, and 108b to be switched and connected are arranged close to each other, and each switch portion 104, 108a, and 108b is connected to a common antenna terminal in the IC. The harmonic component generated in the part is likely to sneak into another switch part or a signal path connected to the switch part, and the communication signal may interfere between different bands.
- GSM Global Positioning System
- GSM 850 MHz band signal may overlap with the GPS signal frequency, and if the harmonics are input via the GPS antenna, the GPS reception sensitivity may deteriorate. is there.
- the present invention has been made in view of the above-described problems, and can prevent interference between bands while easily reducing the size and simplifying parts, and can easily cope with a design change.
- An object is to provide a switch module.
- the switch module of the present invention is a switch module having a plurality of signal paths for transmitting and receiving a plurality of communication signals having different frequency bands, and is mounted on the wiring board and the wiring board, A switch IC having a common terminal, a plurality of individual terminals connected to the corresponding signal paths, and a switch unit that selectively switches and connects the common terminal and each of the individual terminals; Each of the plurality of first switches having one end connected to the common terminal in the switch IC and the other end connected to the corresponding individual terminal, and the plurality of first switches in the switch IC. One end of the common is connected via the connection wiring electrode provided on the wiring board without being connected to the switch. It is characterized in that it comprises at least one second switch which other end is connected to the child being connected to the individual terminal corresponding within the switch IC.
- the switch module can be reduced in size and simplified as compared with the configuration in which the switch portions are individually provided between different bands.
- the switch portion of the switch IC has a plurality of first switches each having one end connected to a common terminal in the switch IC and the other end connected to a corresponding individual terminal, and a plurality of switches in the switch IC. Without being connected to the first switch, one end thereof is connected to the common terminal via the connection wiring electrode provided on the wiring board, and the other end is connected to the corresponding individual terminal in the switch IC.
- the first switch and the second switch become electrically independent in the switch IC, and communication signals transmitted to the first switch and the second switch, respectively.
- the mutual wraparound amount decreases. Therefore, by transmitting the communication signals that may interfere with each other between the first switch and the second switch, mutual interference between the two communication signals can be prevented.
- Each communication signal includes one communication signal whose harmonic component interferes with another communication signal, and the one communication signal is transmitted through the signal path connected to the second switch.
- the other communication signal may be transmitted by any one of the signal paths connected to the first switches.
- the second switches may be connected in parallel by wiring electrodes provided on the wiring board.
- the second switch to be connected in parallel can be freely selected on the wiring board side, so that a common switch IC can correspond to a plurality of switch modules.
- the first antenna is connected to the common terminal of the switch module, and the communication signal whose harmonic component interferes with the communication signal transmitted / received to / from the second antenna is transmitted to the second switch of the switch module.
- a filter for attenuating the harmonic component of the communication signal transmitted to the second switch is provided in the path connecting the second switch and the common terminal, the communication signal transmitted to the second switch Since the harmonic component is attenuated by the filter, the harmonic component is not input via the second antenna, and a wireless communication device having excellent communication characteristics can be provided.
- the switch portion of the switch IC has a plurality of first switches each having one end connected to the common terminal in the switch IC and the other end connected to the corresponding individual terminal, and one end thereof. Are connected to the common terminal via connection wiring electrodes provided on the wiring board, and the other end is provided with at least one second switch connected to the corresponding individual terminal in the switch IC. Since one end of the switch is not directly connected to the common terminal or the first switch in the IC, the amount of communication signals transmitted to the first switch and the second switch is reduced. Therefore, by transmitting the communication signals that may interfere with each other between the first switch and the second switch, mutual interference between the two communication signals can be prevented.
- FIGS. 1 is a plan view of the switch module 1
- FIG. 2 is a circuit configuration diagram of a wireless communication device including the switch module 1 of FIG. 1
- FIG. 3 illustrates an internal configuration of the switch IC included in the switch module 1. It is a figure for doing. 1 and 3, for the sake of simplicity, a power supply terminal and a control terminal for supplying power and a control signal to the switch IC 3 and a part of a wiring electrode formed on the wiring board 2 are illustrated. Omitted.
- the switch module 1 is a module that is mounted on a mobile phone or the like that transmits and receives a plurality of communication signals having different frequency bands.
- the switch IC 3 mounted on the wiring board 2 and the chip component 5 constituting the matching circuit 11 that performs impedance matching between the external first antenna 4a and the common terminal ANT of the switch IC 3 are provided.
- By enabling switching connection between the common terminal ANT connected to the antenna 4a and any one of the signal paths SL1 to SL10 provided corresponding to each communication signal it enables transmission / reception of multiband communication signals. It is.
- the switch module 1 includes a signal path SL1 for transmission of communication signals of 850 MHz band (824 MHz to 849 MHz: GSM850) and 900 MHz band (880 MHz to 915 MHz: GSM900), 1800 MHz band (1710 MHz to 1785 MHz: GSM1800) and Signal path SL2 for transmission of communication signals in the 1900 MHz band (1850 MHz to 1910 MHz: GSM1900), Signal path SL3 for transmission / reception of communication signals of Band1 (upstream frequency: 1920 MHz to 1980 MHz, downstream frequency: 2110 MHz to 2170 MHz), Band2 (upstream) Signal path SL4, Band8 (upstream frequency) for transmission / reception of communication signals of frequency: 1850 MHz to 1910 MHz, downstream frequency: 1930 MHz to 1990 MHz) : Signal path SL5 for transmission / reception of communication signals of 880 MHz to 915 MHz, downlink frequency: 925 MHz to 960 MHz), signal path SL6 for transmission / reception of communication signals of
- a plurality of signal paths SL8 to SL10 including a signal path for performing the operation, and each signal path SL corresponding to a common terminal ANT of the switch IC3 to be described later and each of the signal paths SL1 to SL10.
- Supports transmission / reception of communication signals with different frequency bands by selectively switching and connecting with one of a plurality of individual terminals 850 / 900Tx, 1800 / 1900Tx, TRx1 to TRx5, and Rx1 to Rx3 connected to each of SL10 It is configured to be able to.
- the individual terminals 850 / 900Tx, 1800 / 1900Tx, TRx1 to TRx5, and Rx1 to Rx3 may be collectively referred to as an individual terminal 6.
- the wiring substrate 2 is a multilayer substrate made of an insulating material such as glass epoxy resin, low temperature co-fired ceramic (LTCC), glass, etc., and wiring electrodes and vias made of a conductive material such as Cu are provided on the front and back surfaces and inside thereof. A conductor (not shown) or the like is formed. These wiring electrodes and via conductors form signal paths SL1 to SL10, connection wiring electrodes 8 described later, low pass filters LPF1 to LPF3, and the like.
- LTCC low temperature co-fired ceramic
- a plurality of mounting electrodes (not shown) connected to the individual terminals 6 of the switch IC 3 and the other terminals ANT, VDD, and VC1 to VC4 are formed on the surface of the wiring board 2,
- a plurality of external electrodes ANTa and 850 / 900Txa for connecting an external mother board or the like (not shown) and the switch module 1 are connected to the corresponding mounting electrodes via wiring electrodes and via conductors on the back surface.
- Each of the signal paths SL1 to SL10 is formed by the wiring electrodes and via conductors formed on the wiring board 2 as described above.
- the signal path SL1 is formed by wiring electrodes and via conductors that connect the mounting electrodes connected to the individual terminals 850 / 900Tx of the switch IC3 and the external electrodes 850 / 900Txa
- the signal path SL2 is an individual of the switch IC. It is formed by wiring electrodes and via conductors connecting the mounting electrodes connected to the terminals 1800 / 1900Tx and the external electrodes 1800 / 1900Txa.
- the other signal paths SL3 to SL10 are formed of wiring electrodes and via conductors that connect the corresponding mounting electrodes and external electrodes, respectively. Note that low-pass filters LPF1 and LPF2 are provided in the transmission signal path SL1 and the signal path SL2, respectively.
- the low-pass filter LPF1 is composed of two inductor elements GLt1, GLt2, and five capacitor elements GCc1, GCc2, GCu1, GCu2, GCu3.
- Each of these elements GLt1, GLt2, GCc1, GCc2 , GCu1, GCu2, and GCu3 form a filter circuit that attenuates harmonic components and the like (second harmonics and third harmonics in this embodiment) of transmission signals in the 850 MHz band and 900 MHz band.
- These elements GLt1, GLt2, GCc1, GCc2, GCu1, GCu2, and GCu3 are formed by wiring electrodes and via conductors formed on the wiring board 2.
- the low-pass filter LPF2 is formed by two inductor elements DLt1 and DLt2 and two capacitor elements DCc1 and DCu2, and these elements DLt1, DLt2, DCc1 and DCu2 are used to generate higher harmonics of transmission signals in the 1800 MHz band and the 1900 MHz band.
- a filter circuit for attenuating wave components and the like is formed.
- Each of these elements DLt1, DLt2, DCc1, and DCu2 are also formed by wiring electrodes and via conductors formed on the wiring board 2, similarly to the low-pass filter LPF1. Note that a part or all of the inductance elements and capacitor elements constituting both the low-pass filters LPF1 and LPF2 described above may be formed on a chip component and mounted on the surface of the wiring board 2.
- the chip component 5 is formed by chip inductors L1 and L2 and a chip capacitor C1, and each chip component 5 is mounted on the surface of the wiring board 2, so that the external first antenna 4a and the common terminal ANT of the switch IC 3 A matching circuit 11 is formed for impedance matching between the two.
- the structure which forms all or one part of chip inductor L1, L2 and the chip capacitor C1 in the wiring board 2 may be sufficient.
- the switch IC 3 is a semiconductor element formed of Si, GaAs, or the like, and is connected to a common terminal ANT connected to the external electrode ANTa formed on the back surface of the wiring board 2 and corresponding signal paths SL1 to SL10.
- each of the switch units 7 is connected to a common terminal ANT in the switch IC 3 and the other end is connected to a corresponding individual terminal 6 (in this embodiment, eight).
- the first switch 7a and one end thereof are connected to the common terminal ANT via the connection wiring electrode 8 provided on the wiring board 2, and the other end is connected to the corresponding individual terminal 6 in the switch IC3.
- a plurality of (two in this embodiment) second switches 7b to be connected is formed of a plurality of field effect transistors (FETs: Field Effect Transistors).
- each first switch 7a is connected to the common terminal ANT, and one end of each first switch 7a is connected via an internal wiring electrode of the switch IC3.
- one end of each second switch 7b is not connected to any one end of each first switch 7a in the switch IC3, and is not connected to the common terminal ANT in the switch IC3.
- the switch IC 3 is further formed with two connection terminals Z1 and Z2, and one end of each of the two second switches 7b uses the connection terminal Z2 as a junction to switch They are connected by internal wiring electrodes of IC3.
- the connection terminal Z1 is connected to the common terminal ANT and one end of each first switch 7a.
- Both connection terminals Z1 and Z2 are connected through connection wiring electrodes 8 formed on the wiring board 2. Therefore, one end of each second switch 7b is not directly connected to the common terminal ANT in the switch IC3, but is connected to the common terminal ANT via the connection wiring electrode 8 formed on the wiring board 2. become.
- a harmonic component of a communication signal transmitted to both the second switches 7b is provided on a path connecting the two connection terminals Z1 and Z2, that is, a path connecting the common terminal ANT and the second switches 7b.
- the low-pass filter LPF3 is a filter that attenuates harmonic components (second harmonics in this embodiment) of the Band5 communication signal transmitted to the signal path SL6 and the Band13 communication signal transmitted to the signal path SL7.
- the inductor element UMLt1 and the capacitor element UMCt1 are formed on the wiring board 2.
- the elements UMLt1 and UMCt1 may be formed in the switch IC3.
- the LPF 3 may be formed by forming each of the elements UMLt1 and UMCt1 as chip components and mounting the chip components on the surface of the wiring board 2.
- the low-pass filter LPF 3 is not necessarily provided in the connection wiring electrode 8.
- the above-described harmonic component may be generated when a communication signal, in particular, a high-power transmission signal flows through the switches 7a and 7b.
- the signal path SL8 connected to the individual terminal Rx1 transmits a reception signal having a frequency band of 1574.42 MHz to 1576.42 MHz as a communication signal from the GPS, and is connected to the individual terminal TRx3.
- a transmission signal of Band 13 uplink frequency: 777 MHz to 787 MHz
- the harmonics for example, second harmonic: 1554 MHz to 1574 MHz
- harmonics are generated, and if the harmonics wrap around the signal path SL8 through which the received signal from the GPS is transmitted, the GPS reception sensitivity may deteriorate.
- the signal path SL8 through which the reception signal from the GPS is transmitted is connected to the first switch 7a, and the signal path SL7 through which the Band13 communication signal (transmission / reception signal) is transmitted has one end thereof.
- the common terminal ANT and the second switch 7b not connected to one end of each first switch 7a in the switch IC3, one end of both the switches 7a and 7b is connected in the switch IC3. It is configured to avoid the wraparound of harmonics caused by, and to prevent the deterioration of communication characteristics.
- a signal path connected to the first switch 7a and a signal path connected to the second switch 7b are at least signals that may interfere with each other among a plurality of communication signals having different frequency bands.
- the other communication signals may be transmitted to any one of the signal path connected to the first switch 7a and the signal path connected to the second switch 7b. I do not care.
- the number of the first switch 7a and the second switch 7b is not limited, and may be changed as appropriate according to the number of communication signals to be handled and the state of the frequency band.
- only the switch for transmitting the Band 13 communication signal (signal path SL7) that may interfere with the GPS reception signal (signal path SL8) is formed as the second switch 7b.
- a switch through which a communication signal (signal path SL6) is transmitted may be formed as the first switch 7a.
- the switch connected to the signal path SL6 may be connected to one end of the other first switch 7a and the common terminal ANT in the switch IC3 in the same manner as the other first switch 7a.
- connection terminal Z2 formed in the switch IC3 as a junction
- a common connection wiring electrode 8 formed on the wiring board 2 from the connection terminal Z2 is connected.
- the connection terminal Z1 is connected to the common terminal ANT.
- one end of each of the second switches 7b may be connected to the common terminal ANT by forming individual connection wiring electrodes 8. Absent. In this case, for example, a connection terminal connected to one end of the second switch 7b corresponding to the individual terminal TRx3 is newly provided in the switch IC3, and the connection terminal and the common terminal ANT are provided on the wiring board 2. What is necessary is just to connect via another connection wiring electrode 8.
- the wireless communication device 50 including the switch module 1 is, for example, a mobile phone. As shown in FIG. 2, the first and second antennas 4a and 4b, the switch module 1, and the reception module 20 are provided. Prepare.
- the external electrode ANTb of the receiving module 20 constituting the wireless communication device 50 is connected to the second antenna 4b and to the low-pass filter 21.
- the low pass filter 21 is connected to the SAW filter 22, and the SAW filter 22 is connected to the input terminal of the low noise amplifier LNA 23.
- the output terminal of the low noise amplifier LNA 23 is connected to the SAW filter 24, and the output terminal of the SAW filter 24 is connected to the external electrode Rb provided in the receiving module 20.
- the SAW filters 22 and 24 are filters that include the frequency of the communication signal received by the second antenna 4b in the pass band.
- the signal transmitted to the receiving module 20 is a communication signal in a frequency band that substantially overlaps the frequency band of the harmonic component of the communication signal (for example, Band 13) transmitted to the second switch 7b of the switch module 1.
- the harmonic component of the communication signal transmitted to the second switch 7b of the switch module 1 is attenuated by the low-pass filter LPF3, the harmonic component is transmitted to the second antenna. Input to the receiving module 20 via 4b can be prevented, and thereby good communication characteristics of communication signals transmitted to both antennas 4a and 4b can be ensured.
- the module connected to the second antenna 4b is not limited to the receiving module 20, and may be one that supports transmission / reception of communication signals.
- the reception signal from the GPS is transmitted to the signal path SL8 connected to the first switch 7a, and the transmission signal (Band 13) whose harmonics are in the vicinity of the reception signal is the second. Because the signal is transmitted to the signal path SL7 connected to the switch 7b, even if a harmonic is generated in the second switch 7b, the harmonic passes through the connection wiring electrode 8 provided on the wiring board 2. Then, it is transmitted to the common terminal ANT of the switch IC3. Therefore, compared to the case where one end of each of the switches 7a and 7b is connected in the switch IC3, the amount of harmonics wrapping around the signal path SL8 is reduced, and therefore the harmonics of the Band13 communication signal are transmitted from the GPS. It is possible to prevent the GPS reception sensitivity from deteriorating due to the signal path SL8 through which the reception signal is transmitted.
- the low-pass filter LPF3 for attenuating the harmonics of the Band 13 communication signal is provided in the path connecting the connection terminals Z1 and Z2, the harmonics are attenuated in the process of transmitting the connection wiring electrode 8. This further improves the effect of suppressing the harmonics of the communication signal of Band 13 from entering the signal path SL8.
- the low-pass filter LPF3 is provided in the connection wiring electrode 8 that connects the common switch ANT and the second switch 7b that is not connected to one end of each first switch 7a and the common terminal ANT in the switch IC3. Therefore, the low-pass filter LPF3 provided for attenuating the harmonics of the Band13 and Band5 communication signals transmits a communication signal (the frequency band of which is transmitted to each first switch 7a in the vicinity of the harmonics (for example, the adverse effect of attenuating the received signal from GPS (signal path SL8) and the Band2 communication signal (signal path SL4) does not occur. That is, it is possible to attenuate only the harmonics of the communication signal transmitted to the target switch 7b without degrading the communication characteristics of the communication signal transmitted to the other switch 7a.
- switches 7a and 7b are formed by field effect transistors
- the present invention can be applied to a switch IC in which each switch is formed by a field effect transistor.
- the switch module 1a according to this embodiment is different from the switch module 1 of the first embodiment described with reference to FIGS. 1 to 3 in that the first switch 7a is different as shown in FIGS. This is the point that the individual terminal 850 / 900Tx that was connected and the individual terminal TRx2 that was connected to the second switch 7b were replaced, and the configuration of the low-pass filter LPF1 that was provided in the signal path SL1 was changed. Since the other configuration is the same as that of the first embodiment, description thereof is omitted by attaching the same reference numerals.
- the individual terminal 850 / 900Tx connected to the first switch 7a is connected to the signal path SL6 as the individual terminal TRx2, and also connected to the second switch 7b.
- the individual terminal TRx2 as the individual terminal 850 / 900Tx to the signal path SL1
- both the individual terminals 850 / 900Tx and TRx2 are used interchangeably.
- one end of the second switch 7b connected to the replaced individual terminal 850 / 900Tx and the common terminal ANT are connected via the connection wiring electrode 8 provided with the low-pass filter LPF3.
- the low-pass filter LPF4 provided in the signal path SL1 is a part of each element GLt1, GLt2, GCc1, GCc2, GCu1, GCu2, GCu3 constituting the low-pass filter LPF1 of the first embodiment.
- the third harmonics of the communication signals in the 850 MHz band and the 900 MHz band transmitted to the signal path SL1 are attenuated by the elements GLt2, GCc2, GCu2, and GCu3.
- the low-pass filter LPF3 provided in the connection wiring electrode 8 attenuates the second harmonic of the communication signal of Band13 transmitted to the signal path SL7, and communicates in the 850 MHz band and 900 MHz band transmitted to the signal path SL1. It is provided as a filter that attenuates the second harmonic of the signal.
- the second harmonic attenuation function and the third harmonic included in the low-pass filter LPF1 in the first embodiment can be substituted by the low-pass filter LPF3 provided in the connection wiring electrode 8, so that the configuration of the low-pass filter LPF4 can be simplified.
- FIG. 6 is a diagram for explaining the internal configuration of the switch IC 3 included in the switch module 1b.
- the control terminals VC1 to VC4 and the power supply terminals VDD and the wiring board 2 in the switch IC 3 The configurations of the signal paths SL1 to SL5, SL8 to SL10, etc. other than the formed low pass filters LPF1 and LPF2, signal path SL6, and signal path SL7 are not shown.
- the switch module 1b according to this embodiment differs from the switch module 1 according to the first embodiment described with reference to FIGS. 1 to 3 in that two second switches 7b are provided as shown in FIG. It is a point connected in parallel. Since the other configuration is the same as that of the first embodiment, description thereof is omitted by attaching the same reference numerals.
- both signal paths SL6 and SL7 respectively connected to the second switch 7b are connected via the wiring electrodes 9 formed on the wiring board 2, so that the second switches 7b are connected in parallel.
- the Both second switches 7b are used as communication signals for the Band 13 communication signal.
- the Band5 communication signal used in the first embodiment is not used.
- the signal path SL6 Since there is no need to form a path (wiring electrode or via conductor) from the location connected to the wiring electrode 9 to the back surface (external electrode TRx2a), the wiring structure of the wiring board 8 can be simplified.
- the wiring electrode 9 for connecting both the second switches 7b in parallel is formed on the layer on which the external electrode TRx2a is formed or a layer close to it, such as the back surface (lowermost layer) of the wiring substrate 8 or a layer on the lowermost layer.
- the signal path SL6 used for the Band5 communication signal can be used as an effective signal path simply by deleting the wiring electrode 9. Therefore, the 10-line signal path similar to the first embodiment is used. It is practical because it can be used.
- FIG. 7 is a diagram for explaining the internal configuration of the switch IC 3a included in the switch module 1c.
- the configuration other than the switch IC 3a, the connection wiring electrodes 8 and 8a, and the low-pass filter LPF3 is not illustrated. is doing. Also, the control terminals VC1 to VC4 and the power supply terminal VDD in the switch IC 3a are not shown.
- the switch module 1c of this embodiment is different from the switch module 1 of the first embodiment described with reference to FIGS. 1 to 3 as shown in FIG.
- One end of the switch 7b and one end of the second switch 7b connected to the individual terminal TRx3 are independent, and one end of the second switch 7b connected to the individual terminal TRx2 and the common terminal ANT are separate terminals.
- the other structure is the same as 1st Embodiment, description is abbreviate
- the second switch 7b connected to the individual terminal TRx2 independent, one end of the second switch 7b and the common terminal ANT can be connected without going through the low-pass filter LPF3.
- another low pass filter may be provided on the connection wiring electrode 8a to attenuate the harmonics of the Band5 communication signal transmitted to the signal path SL6.
- the low-pass filter LPF3 on the connection wiring electrode 8a side, the Band5 communication signal transmitted to the signal path SL6 and the Band13 communication signal transmitted to the signal path SL7 can be interchanged. Therefore, since this switch IC 3a can be used to cope with changes in the wiring structure of various wiring boards 2, it is not necessary to redesign the switch IC 3a in accordance with the design change of the switch module 1c, and the switch module 1c Manufacturing costs can be reduced.
- the switches 7a and 7b are formed of field effect transistors, but the switches 7a and 7b may be formed of various transistors such as bipolar transistors and electrostatic induction transistors.
- Each first switch 7a may be formed using a plurality of elements such as a resistance element, a capacitor element, and a field effect transistor.
- the present invention can be applied to various switch modules in which a switch IC is mounted on a wiring board.
- Switch module 2 Wiring board 3, 3a Switch IC 6,850 / 900Tx, 1800 / 1900Tx, TRx1 to TRx5, Rx1 to Rx3 Individual terminal 7 Switch part 7a First switch 7b Second switch 8, 8a Connection wiring electrode 9 Wiring electrode ANT Common terminal LPF3 Low-pass filter (filter circuit) )
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Abstract
Description
本発明の第1実施形態にかかるスイッチモジュール1について、図1~図3を参照して説明する。なお、図1はスイッチモジュール1の平面図であり、図2は図1のスイッチモジュール1を備える無線通信機器の回路構成図であり、図3はスイッチモジュール1が備えるスイッチICの内部構成を説明するための図である。なお、図1および図3では、説明を簡単にするために、スイッチIC3に電源や制御信号を供給するための電源端子および制御端子、配線基板2に形成される配線電極の一部等を図示省略している。
本発明の第2実施形態にかかるスイッチモジュール1aについて、図4および図5を参照して説明する。なお、図4はスイッチモジュール1aの回路構成図、図5はスイッチモジュール1aが備えるスイッチIC3の内部構成を説明するための図を示し、図5においては、説明を簡単にするために、配線基板2に形成された配線電極の一部、スイッチIC3の各制御端子VC1~VC4および電源端子VDD等を図示省略している。
本発明の第3実施形態にかかるスイッチモジュール1bについて、図6を参照して説明する。なお、図6はスイッチモジュール1bが備えるスイッチIC3の内部構成を説明するための図であり、説明を簡単にするために、スイッチIC3における各制御端子VC1~VC4および電源端子VDD、配線基板2に形成された各ローパスフィルタLPF1,LPF2、信号経路SL6および信号経路SL7以外の各信号経路SL1~SL5,SL8~SL10等の構成を図示省略している。
本発明にかかる第4実施形態のスイッチモジュール1cについて、図7を参照して説明する。なお。図7はスイッチモジュール1cが備えるスイッチIC3aの内部構成を説明するための図であり、説明を簡単にするために、スイッチIC3a、接続配線電極8,8a、ローパスフィルタLPF3、以外の構成を図示省略している。また、スイッチIC3aにおける各制御端子VC1~VC4および電源端子VDDも図示省略している。
2 配線基板
3,3a スイッチIC
6,850/900Tx,1800/1900Tx,TRx1~TRx5,Rx1~Rx3 個別端子
7 スイッチ部
7a 第1のスイッチ
7b 第2のスイッチ
8,8a 接続配線電極
9 配線電極
ANT 共通端子
LPF3 ローパスフィルタ(フィルタ回路)
Claims (7)
- 周波数帯域の異なる複数の通信信号を送受信するための複数の信号経路を有するスイッチモジュールにおいて、
配線基板と、
前記配線基板に実装され、共通端子と、それぞれ対応する前記信号経路に接続される複数の個別端子と、前記共通端子と前記各個別端子のいずれかとを選択的に切換接続するスイッチ部とを有するスイッチICと備え、
前記スイッチ部は、それぞれその一端が前記スイッチIC内において前記共通端子に接続されるとともにその他端が対応する前記個別端子に接続される複数の第1のスイッチと、前記スイッチIC内において前記複数の第1のスイッチと接続されることなく、その一端が前記配線基板に設けられた接続配線電極を経由して前記共通端子に接続されるとともにその他端が前記スイッチIC内において対応する前記個別端子に接続される少なくとも1つの第2のスイッチとを備える
ことを特徴とするスイッチモジュール。 - 前記各通信信号は、その高調波成分が他の前記通信信号に干渉する一の前記通信信号を含み、
前記一の通信信号が前記第2のスイッチに接続される前記信号経路により伝送されるとともに、前記他の通信信号が前記各第1のスイッチに接続される前記各信号経路のいずれかにより伝送されることを特徴とする請求項1に記載のスイッチモジュール。 - 前記共通端子と前記一の通信信号を伝送する前記第2のスイッチとを接続する経路に、前記一の通信信号の高調波成分を減衰させるフィルタ回路が設けられることを特徴とする請求項2に記載のスイッチモジュール。
- 前記スイッチICは、複数の前記第2のスイッチを有し、
前記各第2のスイッチのうち、少なくとも2つの前記第2のスイッチが並列接続されることを特徴とする請求項1ないし3のいずれかに記載のスイッチモジュール。 - 前記各第2のスイッチは、前記配線基板に設けられた配線電極により並列接続されることを特徴とする請求項4に記載のスイッチモジュール。
- 前記各スイッチは、電界効果トランジスタにより形成されることを特徴とする請求項1ないし5のいずれかに記載のスイッチモジュール。
- 請求項1ないし6のいずれかに記載のスイッチモジュールと、
第1および第2のアンテナとを備え、
前記第1のアンテナは少なくとも1つの前記通信信号を送受信し、
前記第2のアンテナは前記少なくとも1つの通信信号の高調波成分が干渉する通信信号を送受信することを特徴とする無線通信機器。
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CN201380066168.6A CN104871435B (zh) | 2012-12-18 | 2013-11-11 | 开关模块及无线通信设备 |
JP2014553014A JP5935902B2 (ja) | 2012-12-18 | 2013-11-11 | スイッチモジュールおよび無線通信機器 |
DE112013006057.4T DE112013006057B4 (de) | 2012-12-18 | 2013-11-11 | Schaltmodul und drahtlose Kommunikations-Ausrüstung |
US14/737,713 US9553630B2 (en) | 2012-12-18 | 2015-06-12 | Switching module and wireless communication equipment |
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JP5935902B2 (ja) | 2016-06-15 |
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KR101690100B1 (ko) | 2016-12-27 |
KR20150076241A (ko) | 2015-07-06 |
CN104871435B (zh) | 2018-04-03 |
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