WO2012157233A1 - Portable wireless device - Google Patents

Portable wireless device Download PDF

Info

Publication number
WO2012157233A1
WO2012157233A1 PCT/JP2012/003088 JP2012003088W WO2012157233A1 WO 2012157233 A1 WO2012157233 A1 WO 2012157233A1 JP 2012003088 W JP2012003088 W JP 2012003088W WO 2012157233 A1 WO2012157233 A1 WO 2012157233A1
Authority
WO
WIPO (PCT)
Prior art keywords
microphone
signal line
wireless device
shield pattern
microphone signal
Prior art date
Application number
PCT/JP2012/003088
Other languages
French (fr)
Japanese (ja)
Inventor
弘准 菊地
真悟 角
木村　亮介
Original Assignee
パナソニック株式会社
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by パナソニック株式会社 filed Critical パナソニック株式会社
Publication of WO2012157233A1 publication Critical patent/WO2012157233A1/en

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/12—Supports; Mounting means
    • H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
    • H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
    • H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
    • H01Q1/242—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use
    • H01Q1/243—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use with built-in antennas
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/52—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
    • H01Q1/528—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure reducing the re-radiation of a support structure

Definitions

  • the present invention relates to a portable wireless device such as a mobile phone, and more particularly to a portable wireless device having a bar structure.
  • a SAR (Specific Absorption Rate) value is used as an index representing the energy of electromagnetic waves absorbed by the human body.
  • the first and second antenna units arranged in the housing are switched and used according to the communication mode during communication, and the distance between the antenna and the human body is increased to ensure good communication.
  • a portable radio is described.
  • antenna elements when antenna elements are placed on the hinge, changes in the structure around the hinge (hinge conductor shape, upper and lower board connection lines, etc.) greatly affect antenna performance.
  • An antenna may be arranged.
  • Burst noise is noise that can be heard by the other party on the phone due to the transmission wave from the mobile phone falling on the audio system block inside the mobile phone.
  • Patent Document 2 describes a mobile phone small microphone in which a coil for high frequency cut is connected to an output terminal.
  • the output terminal and the GND terminal of the microphone are blocked by a high frequency cut coil, and the burst noise generated when the transmission wave is superimposed on the small microphone is suppressed.
  • the influence when the microphone and the antenna element are arranged close to each other at the bottom of the casing is not considered. That is, in any portable wireless device having a bar structure or a clamshell / sliding structure, when the microphone and the antenna element are arranged close to each other at the bottom of the casing, the microphone main body and the microphone signal line and the antenna element are There is a problem that the antenna performance and the acoustic performance are deteriorated due to electrical influence on each other.
  • a portable wireless device having a bar structure it is a mainstream to arrange the cellular antenna at the lower end of the casing by SAR. Moreover, the mounting volume of the portable wireless device is reduced due to the large display screen, and the cellular antenna element and the microphone are arranged close to each other.
  • An object of the present invention is to provide a portable wireless device capable of reducing the influence on the antenna performance due to the proximity of the conductor while arranging the microphone and the antenna element close to each other and achieving both the microphone acoustic performance and the antenna performance. is there.
  • the portable wireless device of the present invention is a portable wireless device having a circuit board, an antenna element connected to the circuit board, and a microphone disposed in the vicinity of the antenna element, the microphone and the circuit board.
  • a microphone signal line connecting the microphone, a shield pattern covering the microphone and the microphone signal line, loaded on the microphone signal line, and loaded between the shield pattern and the GND of the circuit board, and low in a voice band.
  • An impedance and a high impedance in the communication band, and a cutoff circuit that cuts off a high-frequency signal input to the microphone is employed.
  • the present invention it is possible to provide a portable wireless device capable of reducing the influence on the antenna performance due to the proximity of the conductor while arranging the microphone and the antenna element close to each other and achieving both the microphone acoustic performance and the antenna performance. is there.
  • the perspective view which shows schematic structure of the portable radio
  • the front view which shows the principal part of the component of the portable radio
  • the rear view which shows the principal part of the component of the portable radio
  • the side view which shows the principal part of the component of the portable radio
  • the exploded perspective view which shows the detailed structure of the microphone signal wire
  • a block diagram showing a configuration of a portable radio apparatus according to the above embodiment The principal part enlarged view of the housing
  • wireless apparatus which concerns on the said embodiment.
  • FIG. 1 is a perspective view showing a schematic configuration of a portable radio apparatus 100 according to an embodiment of the present invention.
  • 2 is a front view showing a main part of the portable radio apparatus 100 of FIG. 1
  • FIG. 3 is a rear view thereof
  • FIG. 4 is a side view thereof.
  • FIG. 4B is an enlarged view of a main part of FIG.
  • the portable radio apparatus 100 is embodied by a portable information terminal such as a PDA (Personal Digital Assistant). Further, the mobile radio apparatus 100 according to the present invention may be applied to a camera-equipped mobile phone / PHS (Personal Handy-Phone System).
  • PDA Personal Digital Assistant
  • PHS Personal Handy-Phone System
  • the portable wireless device 100 includes an input unit 101, a housing 110, a display unit 120, a circuit board 130, a microphone signal line 140, a microphone 150, and an antenna element 160. , A shield pattern 170 and a blocking circuit 180 are provided.
  • the input unit 101 is installed at a lower end (bottom) 110a of the casing below the display unit 120 described later, and is composed of function buttons. Since the display unit 120 also has the function of an input unit, the input unit 101 has an auxiliary role for input operation, has a small number of function buttons, and has a reduced mounting volume.
  • the housing 110 has a bar type structure.
  • the casing 110 is a main body side casing.
  • the display unit 120 is a large display that covers substantially the entire surface of the housing 110.
  • the display unit 120 is configured by an LCD display, an organic EL (Organic Electro-Luminescence) display, or the like, and displays details of received information, contents, and the like.
  • the display unit 120 is provided with a touch panel (not shown). Therefore, the display unit 120 also has a function of an input unit. Due to the increase in the screen size of the display unit 120, the mounting volume inside the housing 110 is reduced.
  • the circuit board 130 is a printed board on which circuit components that realize various functions of the mobile wireless device 100 are mounted. At the lower end of the circuit board 130, a board end portion 130a for connecting the antenna element 160 is formed.
  • the microphone signal line 140 (see FIG. 4) is provided so that the longitudinal direction is orthogonal to the longitudinal direction of the antenna element 160.
  • the microphone 150 is installed at the lower end portion 110a of the casing, and is connected to the circuit board 130 through the microphone signal line 140 (see FIG. 4B).
  • the microphone 150 is installed such that the longitudinal direction is orthogonal to the longitudinal direction of the antenna element 160.
  • the microphone 150 is disposed in the vicinity of the antenna element 160 connected to the circuit board 130.
  • the antenna element 160 is installed in the width direction of the housing 110 (the left-right direction in FIG. 2) and is installed in the housing lower end 110a.
  • the antenna element 160 is arranged so that the longitudinal direction is orthogonal to the longitudinal direction of the microphone signal line 140.
  • the antenna element 160 has a conductor portion 161 made of a metal frame and a power feeding portion 162.
  • the power feeding part 162 is connected to the board end part 130 a of the circuit board 130.
  • a metal having high conductivity, light weight and high strength, for example, a magnesium alloy is used for the metal frame constituting the antenna element 160.
  • the conductor portion 161 extends in the width direction of the housing 110 from the power supply portion 162 connected to the substrate end portion 130a at the housing lower end portion 110a.
  • the conductor 161 is disposed so as to bypass the sound collection hole 152 (see FIG. 5) of the microphone 150.
  • the shield pattern 170 covers the microphone signal line 140 and the microphone 150 (see FIG. 4B).
  • the blocking circuit 180 is loaded between a microphone board 145 and the circuit board 130, which will be described later, and between the shield pattern 170 and the GND of the circuit board 130, and blocks a high-frequency signal entering the microphone 150.
  • FIG. 5 is an exploded perspective view showing a detailed configuration of the microphone signal line 140 and the microphone 150.
  • FIG. 6 is an enlarged view of the main part of the housing lower end 110a of the housing 110.
  • the microphone 150 has a rectangular casing 151 and a sound collecting hole 152 that is opened at the surface end of the rectangular casing 151.
  • the microphone 150 is attached on the microphone substrate 145 on which the microphone signal line 140 is wired.
  • the microphone signal line 140 is a signal line that is orthogonal to the antenna element 160 and connects the microphone 150 and the circuit board 130.
  • the microphone signal line 140 includes a microphone signal line 141 patterned on the microphone board 145 and a microphone signal line 142 that connects the microphone signal line 141 to the circuit board 130 via the blocking circuit 180.
  • the cutoff circuit 180 is loaded between the microphone signal line 141 and the microphone signal line 142.
  • the microphone 150 is connected to a microphone substrate 145 on which a microphone signal line 141 is wired.
  • a shield pattern 170 that covers the microphone signal line 141 and the microphone 150 with a minimum width is disposed.
  • shield pattern 170 is configured by a copper foil layer formed on the back surface of microphone substrate 145.
  • the shield pattern 170 only needs to cover the microphone signal line 141 and is not limited to the copper foil layer of the substrate.
  • the shield pattern 170 may be a conductive sheet separate from the microphone substrate 145 provided on the back surface of the microphone substrate 145.
  • the shield pattern 170 is formed to have a minimum width that covers the microphone signal line 141 and the microphone 150. By forming the shield pattern 170 to a minimum width, the electrical length can be shortened. The shield pattern 170 covers from the lower end of the microphone 150 to the cutoff circuit 180.
  • the shield pattern 170 employs a configuration in which the shield pattern 170 is connected to the GND of the circuit board 130 via the cutoff circuit 180 in addition to the configuration covering the microphone signal line 141 and the microphone 150.
  • the GND connected via the cutoff circuit 180 may be a GND other than the circuit board 130.
  • the cutoff circuit 180 includes cutoff circuits L1, L3, and L4 loaded between the microphone signal line 141 on the microphone board 145 and the microphone signal line 142 on the circuit board 130, and the shield pattern 170 and the GND of the circuit board 130. It is comprised from the interruption
  • the cut-off circuit 180 (cut-off circuits L1 to L4) is constituted by an inductance L, and has a low impedance in the voice band and a high impedance in the communication band, and cuts off the high-frequency signal input to the microphone 150.
  • FIG. 7 is a block diagram showing the configuration of the portable wireless device 100. As shown in FIG.
  • the portable wireless device 100 includes a microphone 150, a microphone signal line 141, an antenna element 160, a cutoff circuit 180, and a microphone with respect to the longitudinal direction of the housing 110 from the housing lower end portion 110a.
  • the signal line 142 is arranged in this order.
  • the microphone signal lines 141 and 142 are arranged perpendicular to the antenna element 160.
  • the conductor 161 (not shown in FIG. 7) of the antenna element 160 is disposed in the vicinity of the microphone 150.
  • the portable wireless device 100 also includes a shield pattern 170 that covers the microphone signal line 141 and the microphone 150 from at least the end of the microphone 150 to the cutoff circuit 180.
  • the shield pattern 170 is formed of, for example, a copper foil layer on the back surface of the microphone substrate 145.
  • cutoff circuits L1, L3, and L4 are loaded between the microphone signal line 141 and the microphone signal line 142, and the cutoff circuit L2 is loaded between the shield pattern 170 and the GND of the circuit board 130.
  • the cut-off circuit 180 (cut-off circuits L1 to L4) is configured by an inductance L that has a low impedance in the voice band and a high impedance in the communication band.
  • FIG. 8 is an enlarged view of a main part of the housing lower end portion 110a for explaining the operation of the portable wireless device 100.
  • FIG. 8 is an enlarged view of a main part of the housing lower end portion 110a for explaining the operation of the portable wireless device 100.
  • the microphone signal line 140 (microphone signal lines 141 and 142) is arranged perpendicular to the antenna element 160 (more specifically, the conductor portion 161).
  • the conductor 161 of the antenna element 160 is disposed on the microphone substrate 145 on the bottom side of the housing lower end 110a with respect to the blocking circuit 180.
  • the microphone signal line 140 and the antenna element 160 are orthogonally (particularly in a vertical arrangement), the microphone current flowing through the microphone signal line 140 and the antenna current flowing through the conductor 161 of the antenna element 160 are orthogonal. By making the microphone current and the antenna current orthogonal, the influence on the antenna performance can be reduced.
  • the microphone 150, the microphone signal line 141, and the ground pattern are floated at a high frequency by the cutoff circuit 180, the influence on the antenna performance due to the proximity of the conductor can be reduced.
  • a sound hole (not shown) of the microphone 150 is arranged in the center of the housing lower end portion 110 a of the housing 110.
  • the power feeding portion 162 of the antenna element 160 is disposed on the substrate end portion 130a of the housing lower end portion 110a.
  • the antenna element 160 is configured to bypass the sound hole (not shown).
  • the positional relationship between the bypassed antenna element 160 and the housing 110 is as follows. When viewed from the bottom surface of the housing lower end portion 110a in a plan view of the housing, the microphone 150, the microphone signal line 141, the antenna element 160, the cutoff circuit 180 through the microphone signal line 142 are arranged.
  • the shield pattern 170 is formed in a size that covers at least the microphone 150 to the cutoff circuit 180.
  • the mounting area between the microphone 150 and the antenna element 160 can be reduced, and high antenna performance and acoustic performance can be obtained.
  • FIG. 9 is an equivalent circuit diagram of the microphone 150.
  • the cutoff circuit 180 (the cutoff circuits L1, L3, and L4) is loaded between the microphone signal line 141 on the microphone board 145 and the microphone signal line 142 on the circuit board 130, and the microphone signal line. 141 is separated from the circuit board 130 in a high frequency manner.
  • the cut-off circuit 180 (cut-off circuits L1 to L4) is composed of an inductance L, and has a low impedance in the voice band and a high impedance in the communication band.
  • the blocking circuits L1, L3, and L4 are loaded between the microphone signal line 141 on the microphone board 145 and the microphone signal line 142 on the circuit board 130, and the blocking circuit L2 includes the shield pattern 170 and the GND of the circuit board 130. Will be loaded during. With this configuration, as shown in FIG. 9, the microphone signal line 141 and the shield pattern 170 on the microphone substrate 145 are capacitively coupled.
  • the cut-off circuit 180 can float the conductor 161 at high frequency from the microphone 150, the microphone signal line 141, and the ground pattern by using high impedance in the communication band. Furthermore, the shielding effect of the proximity conductor with respect to the conductor part 161 of the antenna element 160 can be enhanced, and the influence on the antenna performance can be reduced. In addition, high-frequency signal input to the microphone 150 via the circuit board 130 can be suppressed, and burst noise generation can be suppressed.
  • the cutoff circuit 180 does not affect the signal transmission by having a low impedance in the voice band.
  • the shield pattern 170 is a copper foil layer formed on the back surface of the microphone substrate 145.
  • the shield pattern 170 covers the microphone signal line 141 and the microphone 150 on the microphone substrate 145 with a copper foil layer formed on the back surface of the microphone substrate 145.
  • the cutoff circuits L1, L3, and L4 are loaded on the microphone signal line 140 (that is, between the microphone signal line 141 and the microphone signal line 142), and the cutoff circuit L2 is loaded between the shield pattern 170 and the GND of the circuit board 130. To do.
  • This configuration can improve both antenna performance and acoustic performance as follows.
  • the portable wireless device 100 includes the shield pattern 170 and the cutoff circuit 180 described above, thereby minimizing the electrical length of the microphone 150 and the microphone signal line 140 in the high frequency band (high frequency with respect to sound).
  • the influence on the antenna element 160 can be suppressed. By suppressing the influence on the antenna element 160, the antenna performance can be improved.
  • the cutoff circuit 180 can suppress high-frequency signal input to the microphone 150 via the circuit board 130, and can suppress occurrence of burst noise.
  • a shield pattern 170 covering the microphone 150 and the microphone signal line 140 is connected to GND with a low impedance in the voice band. For this reason, it becomes possible to transmit the electrical signal in the acoustic band without loss.
  • the antenna element 160 and the microphone 150 connected to the circuit board 130 are disposed in proximity to the lower end portion 110a of the housing.
  • the antenna element 160 includes a conductor portion 161 and a power feeding portion 162 connected to the circuit board 130, and the microphone signal line 140 is disposed orthogonal to the conductor portion 161.
  • the portable radio apparatus 100 includes a shield pattern 170 that covers the microphone 150 and the microphone signal line 140, blocking circuits L 1, L 3, and L 4 loaded on the microphone signal line 140, and the shield pattern 170 and GND of the circuit board 130. And an interruption circuit L2 loaded in between.
  • Cut-off circuits L1 to L4 are composed of inductance, and have a low impedance in the voice band and a high impedance in the communication band, and block high-frequency signal input to the microphone 150.
  • the shield pattern 170 covers the microphone signal line 140 and the microphone 150 with a minimum width so as to minimize the electrical length in the high frequency band. Since the shield pattern 170 covers the entire back surface of the microphone substrate 145 on which the microphone signal line 141 is wired with a copper foil layer and is connected to the GND of the circuit substrate 130 via the cutoff circuit L2, the microphone signal Capacitively coupled to line 140.
  • the shield pattern 170 and the cutoff circuit 180 by providing the shield pattern 170 and the cutoff circuit 180, the electrical length of the microphone 150 and the microphone signal line 140 in the high frequency band can be minimized, and the influence on the antenna element 160 (proximity of conductor and (Resonance generation) can be suppressed. By suppressing the influence on the antenna element 160, the antenna performance can be improved.
  • the cutoff circuit 180 can suppress high-frequency signal input to the microphone 150 via the circuit board 130, and can suppress occurrence of burst noise.
  • the shield pattern 170 is connected to the GND of the circuit board 130 with low impedance in the voice band, an effect of canceling noise in the acoustic band can be obtained.
  • the portable wireless device 100 can reduce the influence on the antenna performance due to the proximity of the conductor while arranging the microphone 150 and the antenna element 160 close to each other, and can achieve both the microphone acoustic performance and the antenna performance. it can.
  • the microphone signal line 140 is disposed perpendicular to the antenna element 160, and the conductor portion 161 of the antenna element 160 is disposed on the lower end portion 110a of the housing, thereby being close to the conductor. The influence on the antenna performance can be reduced.
  • the sound hole of the microphone 150 is disposed at the center of the housing lower end portion 110a, and the power feeding portion 162 of the antenna element 160 is disposed on the substrate end portion 130a extending to the housing lower end portion 110a. ing.
  • the antenna element 160 is arranged so as to bypass the sound hole. Thereby, high antenna performance and microphone performance can be obtained while reducing the mounting area of the microphone 150 and the antenna element 160 with respect to the housing 110.
  • Any portable wireless device having an antenna element connected to a circuit board and a microphone arranged in the vicinity of the antenna element can be applied.
  • it can be applied not only to portable wireless devices with a bar structure, but also to portable information terminals such as mobile phones / PHS (Personal Handy-Phone System) and PDA (Personal Digital Assistants), and information processing devices such as notebook computers. It is.
  • the name “mobile radio apparatus” is used. However, this is for convenience of explanation, and it is needless to say that a mobile radio apparatus, a radio apparatus, or the like may be used.
  • the type, number, connection method, and the like of the casing, antenna elements, microphone signal lines, and the like constituting the portable wireless device are not limited to the above-described embodiments.
  • the portable radio apparatus can provide a portable radio apparatus having both the microphone acoustic performance and the antenna performance by reducing the influence on the antenna performance due to the proximity of the conductor while arranging the microphone and the antenna element close to each other. This is useful for portable wireless devices such as mobile phones having a bar structure.

Abstract

This portable wireless device (100) is provided with: a shield pattern (170) that covers a microphone (150) and a microphone signal line (140); cutoff circuits (L1, L3, L4) that are loaded on the microphone signal line (140); and a cutoff circuit (L2) that is loaded between the shield pattern (170) and the ground of a circuit board (130). The cutoff circuits (L1-L4) have a low impedance in a voice band and a high impedance in a communication band, and cut off high-frequency signal input to the microphone (150). The shield pattern (170) covers the microphone signal line (140) and the microphone (150) at the minimum width in a manner so as to minimize the electrical length in the high-frequency band.

Description

携帯無線装置Portable wireless device
　本発明は、携帯電話機等の携帯無線装置に関し、特に、バー構造を持つ携帯無線装置に関する。 The present invention relates to a portable wireless device such as a mobile phone, and more particularly to a portable wireless device having a bar structure.
　携帯電話機等の携帯無線装置では小型化と多機能化が進んでおり、加えて、デザイン性向上のためアンテナの内蔵化が進んでいる。 In portable radio devices such as mobile phones, miniaturization and multi-function are progressing, and in addition, antennas are being built in to improve design.
　また、携帯電話機等の携帯無線装置は、アンテナと人体との距離を大きくすることでアンテナの感度劣化を防止している。人体が吸収する電磁波のエネルギを表す指標には、ＳＡＲ（Specific Absorption Rate）値が用いられる。 In addition, portable wireless devices such as mobile phones prevent deterioration of antenna sensitivity by increasing the distance between the antenna and the human body. A SAR (Specific Absorption Rate) value is used as an index representing the energy of electromagnetic waves absorbed by the human body.
　特許文献１には、通信中の通信モ－ドに応じ、筐体に配置された第１，第２のアンテナ部を切替えて使用し、アンテナと人体の距離を大きくして良好な通信を確保する携帯無線機が記載されている。 According to Patent Document 1, the first and second antenna units arranged in the housing are switched and used according to the communication mode during communication, and the distance between the antenna and the human body is increased to ensure good communication. A portable radio is described.
　スマートフォンなどのバー構造を持つ携帯無線装置においては、セルラーアンテナは低ＳＡＲ化や実装体積確保のためボトム部に配置することが主流である。 In portable wireless devices having a bar structure such as smartphones, it is the mainstream to arrange cellular antennas at the bottom to reduce SAR and secure mounting volume.
　また、クラムシェル・スライド構造においてもヒンジ部にアンテナ素子を配置する際、ヒンジ周辺構造の変化（ヒンジ導体形状・上下基板接続線路等）がアンテナ性能へ大きく影響するため、下筐体ボトム部にアンテナを配置する場合がある。 Also, in the clamshell slide structure, when antenna elements are placed on the hinge, changes in the structure around the hinge (hinge conductor shape, upper and lower board connection lines, etc.) greatly affect antenna performance. An antenna may be arranged.
　一方、携帯電話を用いて通話をする場合、バーストノイズの問題が発生する。バーストノイズは、携帯電話からの送信波が携帯電話内部の音声系ブロックにかぶり、通話をしている相手側に聞こえるノイズである。 On the other hand, when making a call using a mobile phone, a problem of burst noise occurs. Burst noise is noise that can be heard by the other party on the phone due to the transmission wave from the mobile phone falling on the audio system block inside the mobile phone.
　特許文献２には、出力端子に高周波カット用のコイルが接続された携帯電話機小型マイクが記載されている。特許文献２記載の装置は、マイクの出力端子、ＧＮＤ端子を高周波カット用コイルで遮断し、送信波が小型マイクに重畳して発生するバーストノイズを抑制する。 Patent Document 2 describes a mobile phone small microphone in which a coil for high frequency cut is connected to an output terminal. In the device described in Patent Document 2, the output terminal and the GND terminal of the microphone are blocked by a high frequency cut coil, and the burst noise generated when the transmission wave is superimposed on the small microphone is suppressed.
特開２００３－１６３９５６号公報JP 2003-163958 A 特開２０００－１６５９８２号公報JP 2000-165982 A
　しかしながら、このような従来の携帯無線装置にあっては、筐体のボトム部にマイクとアンテナ素子とを近接配置した場合の影響について考慮されていない。すなわち、バー構造又はクラムシェル・スライド構造のいずれの携帯無線装置であっても、筐体のボトム部にマイクとアンテナ素子とを近接配置した場合、マイク本体及びマイクの信号線とアンテナ素子とが互いに電気的に影響し合い、アンテナ性能と音響性能とが低下するという問題がある。 However, in such a conventional portable radio apparatus, the influence when the microphone and the antenna element are arranged close to each other at the bottom of the casing is not considered. That is, in any portable wireless device having a bar structure or a clamshell / sliding structure, when the microphone and the antenna element are arranged close to each other at the bottom of the casing, the microphone main body and the microphone signal line and the antenna element are There is a problem that the antenna performance and the acoustic performance are deteriorated due to electrical influence on each other.
　特に、バー構造の携帯無線装置では、セルラーアンテナは、ＳＡＲにより筐体下端部に配置することが主流である。また、携帯無線装置は、表示部の大画面化により実装体積が縮小され、セルラーアンテナ素子とマイクは近接した配置となる。 In particular, in a portable wireless device having a bar structure, it is a mainstream to arrange the cellular antenna at the lower end of the casing by SAR. Moreover, the mounting volume of the portable wireless device is reduced due to the large display screen, and the cellular antenna element and the microphone are arranged close to each other.
　上記構成において、（１）マイクをＧＮＤパターンにシールドするだけでは、アンテナ素子に導体（マイク）が近接してアンテナ性能が劣化する。 In the above configuration, (1) if the microphone is simply shielded to the GND pattern, the conductor (microphone) comes close to the antenna element and the antenna performance deteriorates.
　加えて、（２）マイクの信号線上に遮断回路を装荷するだけでは、マイクと回路基板との間にループ電流が発生しバーストノイズ影響を受けるだけでなく、マイクの信号線またはマイク本体が共振してアンテナ性能へ影響を与える可能性がある。 In addition, (2) Just by loading a cutoff circuit on the microphone signal line, a loop current is generated between the microphone and the circuit board, and not only is affected by burst noise, but also the microphone signal line or the microphone body resonates. May affect the antenna performance.
　本発明の目的は、マイクとアンテナ素子とを近接配置させつつ、導体近接によるアンテナ性能への影響を低減し、マイク音響性能とアンテナ性能とを両立することができる携帯無線装置を提供することである。 An object of the present invention is to provide a portable wireless device capable of reducing the influence on the antenna performance due to the proximity of the conductor while arranging the microphone and the antenna element close to each other and achieving both the microphone acoustic performance and the antenna performance. is there.
　本発明の携帯無線装置は、回路基板と、前記回路基板に接続されたアンテナ素子と、前記アンテナ素子近傍に配置されたマイクと、を有する携帯無線装置であって、前記マイクと前記回路基板とを接続するマイク信号線と、前記マイク及び前記マイク信号線を覆うシールドパターンと、前記マイク信号線上に装荷され、かつ、前記シールドパターンと前記回路基板のＧＮＤの間に装荷され、音声帯域では低インピーダンス、通信帯域では高インピーダンスとなって、前記マイクへの高周波信号入力を遮断する遮断回路と、を備える構成を採る。 The portable wireless device of the present invention is a portable wireless device having a circuit board, an antenna element connected to the circuit board, and a microphone disposed in the vicinity of the antenna element, the microphone and the circuit board. A microphone signal line connecting the microphone, a shield pattern covering the microphone and the microphone signal line, loaded on the microphone signal line, and loaded between the shield pattern and the GND of the circuit board, and low in a voice band. An impedance and a high impedance in the communication band, and a cutoff circuit that cuts off a high-frequency signal input to the microphone is employed.
　本発明によれば、マイクとアンテナ素子とを近接配置させつつ、導体近接によるアンテナ性能への影響を低減し、マイク音響性能とアンテナ性能とを両立することができる携帯無線装置を提供することである。 According to the present invention, it is possible to provide a portable wireless device capable of reducing the influence on the antenna performance due to the proximity of the conductor while arranging the microphone and the antenna element close to each other and achieving both the microphone acoustic performance and the antenna performance. is there.
本発明の実施の形態に係る携帯無線装置の概略構成を示す斜視図The perspective view which shows schematic structure of the portable radio | wireless apparatus which concerns on embodiment of this invention 図１の携帯無線装置の構成要素の要部を示す正面図The front view which shows the principal part of the component of the portable radio | wireless apparatus of FIG. 図１の携帯無線装置の構成要素の要部を示す背面図The rear view which shows the principal part of the component of the portable radio | wireless apparatus of FIG. 図１の携帯無線装置の構成要素の要部を示す側面図The side view which shows the principal part of the component of the portable radio | wireless apparatus of FIG. 上記実施の形態に係る携帯無線装置のマイク信号線及びマイクの詳細構成を示す分解斜視図The exploded perspective view which shows the detailed structure of the microphone signal wire | line of the portable radio | wireless apparatus which concerns on the said embodiment, and a microphone 上記実施の形態に係る携帯無線装置の筐体の筐体下端部の要部拡大図The principal part enlarged view of the housing | casing lower end part of the housing | casing of the portable radio | wireless apparatus which concerns on the said embodiment. 上記実施の形態に係る携帯無線装置の構成を示すブロック図A block diagram showing a configuration of a portable radio apparatus according to the above embodiment 上記実施の形態に係る携帯無線装置の動作を説明するための筐体下端部の要部拡大図The principal part enlarged view of the housing | casing lower end part for demonstrating operation | movement of the portable radio | wireless apparatus which concerns on the said embodiment. 上記実施の形態に係る携帯無線装置のマイクの等価回路図Equivalent circuit diagram of microphone of portable wireless device according to above embodiment
　以下、本発明の実施の形態について図面を参照して詳細に説明する。 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
　（実施の形態）
　図１は、本発明の一実施の形態に係る携帯無線装置１００の概略構成を示す斜視図である。図２は、図１の携帯無線装置１００の要部を示す正面図、図３は、その背面図、図４は、その側面図である。図４（ｂ）は、図４（ａ）の要部拡大図である。 (Embodiment)
FIG. 1 is a perspective view showing a schematic configuration of a portable radio apparatus 100 according to an embodiment of the present invention. 2 is a front view showing a main part of the portable radio apparatus 100 of FIG. 1, FIG. 3 is a rear view thereof, and FIG. 4 is a side view thereof. FIG. 4B is an enlarged view of a main part of FIG.
　以下、本発明に係る携帯無線装置１００を、ＰＤＡ（Personal Digital Assistants）等の携帯情報端末で具現化する。また、本発明に係る携帯無線装置１００を、カメラ付き携帯電話機／ＰＨＳ（Personal Handy-Phone System）に適用してもよい。 Hereinafter, the portable radio apparatus 100 according to the present invention is embodied by a portable information terminal such as a PDA (Personal Digital Assistant). Further, the mobile radio apparatus 100 according to the present invention may be applied to a camera-equipped mobile phone / PHS (Personal Handy-Phone System).
　図１～図４に示すように、携帯無線装置１００は、入力部１０１と、筐体１１０と、表示部１２０と、回路基板１３０と、マイク信号線１４０と、マイク１５０と、アンテナ素子１６０と、シールドパターン１７０と、遮断回路１８０と、を備えている。 As shown in FIGS. 1 to 4, the portable wireless device 100 includes an input unit 101, a housing 110, a display unit 120, a circuit board 130, a microphone signal line 140, a microphone 150, and an antenna element 160. , A shield pattern 170 and a blocking circuit 180 are provided.
　入力部１０１は、後述する表示部１２０の下の筐体下端部（ボトム部）１１０ａに設置され、機能ボタンから構成されている。入力部１０１は、表示部１２０が入力手段の機能も兼ね備えているため、入力操作の補助的役割を担い、機能ボタン数も少なく、実装体積も縮小化されている。 The input unit 101 is installed at a lower end (bottom) 110a of the casing below the display unit 120 described later, and is composed of function buttons. Since the display unit 120 also has the function of an input unit, the input unit 101 has an auxiliary role for input operation, has a small number of function buttons, and has a reduced mounting volume.
　筐体１１０は、バータイプ構造を有している。なお、筐体１１０は、折畳式の携帯無線装置１００の場合には、本体側筐体である。 The housing 110 has a bar type structure. In the case of the foldable portable wireless device 100, the casing 110 is a main body side casing.
　表示部１２０は、筐体１１０の表面の略全面を覆う大型ディスプレイである。表示部１２０は、ＬＣＤディスプレイ又は有機ＥＬ（Organic Electro-Luminescence）ディスプレイ等で構成され、受信した情報の内容やコンテンツ等を表示する。表示部１２０には、タッチパネル（図示略）が設置されている。従って、表示部１２０は、入力手段の機能も兼ね備えている。表示部１２０の大画面化により、筐体１１０内部の実装体積が縮小されている。 The display unit 120 is a large display that covers substantially the entire surface of the housing 110. The display unit 120 is configured by an LCD display, an organic EL (Organic Electro-Luminescence) display, or the like, and displays details of received information, contents, and the like. The display unit 120 is provided with a touch panel (not shown). Therefore, the display unit 120 also has a function of an input unit. Due to the increase in the screen size of the display unit 120, the mounting volume inside the housing 110 is reduced.
　回路基板１３０は、携帯無線装置１００の各種機能を実現する回路部品が実装されたプリント基板である。回路基板１３０の下端には、アンテナ素子１６０を接続する基板端部１３０ａが形成されている。 The circuit board 130 is a printed board on which circuit components that realize various functions of the mobile wireless device 100 are mounted. At the lower end of the circuit board 130, a board end portion 130a for connecting the antenna element 160 is formed.
　マイク信号線１４０（図４参照）は、長手方向がアンテナ素子１６０の長手方向に対して直交するように設けられている。 The microphone signal line 140 (see FIG. 4) is provided so that the longitudinal direction is orthogonal to the longitudinal direction of the antenna element 160.
　マイク１５０は、筐体下端部１１０ａに設置され、マイク信号線１４０（図４（ｂ）参照）を通して回路基板１３０に接続されている。マイク１５０は、長手方向がアンテナ素子１６０の長手方向と直交するように設置されている。マイク１５０は、回路基板１３０に接続されたアンテナ素子１６０の近傍に配置されている。 The microphone 150 is installed at the lower end portion 110a of the casing, and is connected to the circuit board 130 through the microphone signal line 140 (see FIG. 4B). The microphone 150 is installed such that the longitudinal direction is orthogonal to the longitudinal direction of the antenna element 160. The microphone 150 is disposed in the vicinity of the antenna element 160 connected to the circuit board 130.
　なお、マイク信号線１４０及びマイク１５０の詳細構成については、後述する。 The detailed configurations of the microphone signal line 140 and the microphone 150 will be described later.
　アンテナ素子１６０は、筐体１１０の幅方向（図２の左右方向）に設置されているとともに、筐体下端部１１０ａに設置されている。アンテナ素子１６０は、長手方向がマイク信号線１４０の長手方向に対して直交するように配置されている。アンテナ素子１６０は、金属フレームからなる導体部１６１と、給電部１６２とを有している。給電部１６２は、回路基板１３０の基板端部１３０ａに接続されている。アンテナ素子１６０を構成する金属フレームには、高い導電性を有し、かつ軽量で強度が高い金属、例えばマグネシウム合金を用いる。導体部１６１は、筐体下端部１１０ａにおいて、基板端部１３０ａに接続された給電部１６２から、筐体１１０の幅方向に延びている。導体部１６１は、マイク１５０の収音孔１５２（図５参照）を迂回するように配置されている。 The antenna element 160 is installed in the width direction of the housing 110 (the left-right direction in FIG. 2) and is installed in the housing lower end 110a. The antenna element 160 is arranged so that the longitudinal direction is orthogonal to the longitudinal direction of the microphone signal line 140. The antenna element 160 has a conductor portion 161 made of a metal frame and a power feeding portion 162. The power feeding part 162 is connected to the board end part 130 a of the circuit board 130. For the metal frame constituting the antenna element 160, a metal having high conductivity, light weight and high strength, for example, a magnesium alloy is used. The conductor portion 161 extends in the width direction of the housing 110 from the power supply portion 162 connected to the substrate end portion 130a at the housing lower end portion 110a. The conductor 161 is disposed so as to bypass the sound collection hole 152 (see FIG. 5) of the microphone 150.
　シールドパターン１７０は、マイク信号線１４０とマイク１５０を覆っている（図４（ｂ）参照）。 The shield pattern 170 covers the microphone signal line 140 and the microphone 150 (see FIG. 4B).
　遮断回路１８０は、後述するマイク基板１４５と回路基板１３０との間及びシールドパターン１７０と回路基板１３０のＧＮＤとの間に装荷され、マイク１５０へ進入する高周波信号を遮断している。 The blocking circuit 180 is loaded between a microphone board 145 and the circuit board 130, which will be described later, and between the shield pattern 170 and the GND of the circuit board 130, and blocks a high-frequency signal entering the microphone 150.
　なお、シールドパターン１７０及び遮断回路１８０の詳細構成については、後述する。 The detailed configuration of the shield pattern 170 and the cutoff circuit 180 will be described later.
　図５は、マイク信号線１４０及びマイク１５０の詳細構成を示す分解斜視図である。また、図６は、筐体１１０の筐体下端部１１０ａの要部拡大図である。 FIG. 5 is an exploded perspective view showing a detailed configuration of the microphone signal line 140 and the microphone 150. FIG. 6 is an enlarged view of the main part of the housing lower end 110a of the housing 110. FIG.
　図５及び図６に示すように、マイク１５０は、矩形状筐体１５１と、矩形状筐体１５１の表面端部に開孔した収音孔１５２とを有している。マイク１５０は、マイク信号線１４０が配線されたマイク基板１４５上に取り付けられている。 As shown in FIGS. 5 and 6, the microphone 150 has a rectangular casing 151 and a sound collecting hole 152 that is opened at the surface end of the rectangular casing 151. The microphone 150 is attached on the microphone substrate 145 on which the microphone signal line 140 is wired.
　マイク信号線１４０は、アンテナ素子１６０に対して直交するとともにマイク１５０と回路基板１３０とを繋ぐ信号線である。マイク信号線１４０は、マイク基板１４５上にパターン配線されたマイク信号線１４１と、マイク信号線１４１を回路基板１３０まで遮断回路１８０を介して接続するマイク信号線１４２とからなる。換言すれば、マイク信号線１４１とマイク信号線１４２の間には遮断回路１８０が装荷されている。 The microphone signal line 140 is a signal line that is orthogonal to the antenna element 160 and connects the microphone 150 and the circuit board 130. The microphone signal line 140 includes a microphone signal line 141 patterned on the microphone board 145 and a microphone signal line 142 that connects the microphone signal line 141 to the circuit board 130 via the blocking circuit 180. In other words, the cutoff circuit 180 is loaded between the microphone signal line 141 and the microphone signal line 142.
　また、図５に示すように、マイク１５０は、マイク信号線１４１が配線されたマイク基板１４５上に接続されている。マイク基板１４５の裏面には、マイク信号線１４１とマイク１５０とを最小限の幅で覆うシールドパターン１７０が配置されている。本実施の形態では、シールドパターン１７０は、マイク基板１４５の裏面に形成された銅箔層により構成されている。シールドパターン１７０は、マイク信号線１４１を覆うものであればよく、基板の銅箔層には限定されない。例えば、シールドパターン１７０は、マイク基板１４５の裏面に設けられた、マイク基板１４５とは別体の導電シートであってもよい。 As shown in FIG. 5, the microphone 150 is connected to a microphone substrate 145 on which a microphone signal line 141 is wired. On the back surface of the microphone substrate 145, a shield pattern 170 that covers the microphone signal line 141 and the microphone 150 with a minimum width is disposed. In the present embodiment, shield pattern 170 is configured by a copper foil layer formed on the back surface of microphone substrate 145. The shield pattern 170 only needs to cover the microphone signal line 141 and is not limited to the copper foil layer of the substrate. For example, the shield pattern 170 may be a conductive sheet separate from the microphone substrate 145 provided on the back surface of the microphone substrate 145.
　また、図６に示すように、シールドパターン１７０は、マイク信号線１４１とマイク１５０とを覆う最小限の幅に形成されている。シールドパターン１７０を最小限の幅に形成することにより、電気長を短くすることができる。また、シールドパターン１７０は、マイク１５０の下端部から遮断回路１８０までを覆っている。 Further, as shown in FIG. 6, the shield pattern 170 is formed to have a minimum width that covers the microphone signal line 141 and the microphone 150. By forming the shield pattern 170 to a minimum width, the electrical length can be shortened. The shield pattern 170 covers from the lower end of the microphone 150 to the cutoff circuit 180.
　シールドパターン１７０は、上記のマイク信号線１４１とマイク１５０とを覆う構成に加えて、遮断回路１８０を介して回路基板１３０のＧＮＤに接続される構成を採る。なお、遮断回路１８０を介して接続されるＧＮＤは、回路基板１３０以外のＧＮＤでもよい。 The shield pattern 170 employs a configuration in which the shield pattern 170 is connected to the GND of the circuit board 130 via the cutoff circuit 180 in addition to the configuration covering the microphone signal line 141 and the microphone 150. Note that the GND connected via the cutoff circuit 180 may be a GND other than the circuit board 130.
　遮断回路１８０は、マイク基板１４５上のマイク信号線１４１と回路基板１３０上のマイク信号線１４２との間に装荷される遮断回路Ｌ１，Ｌ３，Ｌ４、及びシールドパターン１７０と回路基板１３０のＧＮＤとの間に装荷される遮断回路Ｌ２から構成されている。 The cutoff circuit 180 includes cutoff circuits L1, L3, and L4 loaded between the microphone signal line 141 on the microphone board 145 and the microphone signal line 142 on the circuit board 130, and the shield pattern 170 and the GND of the circuit board 130. It is comprised from the interruption | blocking circuit L2 loaded between.
　遮断回路１８０（遮断回路Ｌ１～Ｌ４）は、インダクタンスＬにより構成され、音声帯域では低インピーダンス、通信帯域では高インピーダンスとなって、マイク１５０への高周波信号入力を遮断する。 The cut-off circuit 180 (cut-off circuits L1 to L4) is constituted by an inductance L, and has a low impedance in the voice band and a high impedance in the communication band, and cuts off the high-frequency signal input to the microphone 150.
　図７は、携帯無線装置１００の構成を示すブロック図である。 FIG. 7 is a block diagram showing the configuration of the portable wireless device 100. As shown in FIG.
　図７に示すように、携帯無線装置１００は、筐体下端部１１０ａより筐体１１０長手上方向に対して、マイク１５０と、マイク信号線１４１と、アンテナ素子１６０と、遮断回路１８０と、マイク信号線１４２とが、この順に配置される構成を採る。 As shown in FIG. 7, the portable wireless device 100 includes a microphone 150, a microphone signal line 141, an antenna element 160, a cutoff circuit 180, and a microphone with respect to the longitudinal direction of the housing 110 from the housing lower end portion 110a. The signal line 142 is arranged in this order.
　マイク信号線１４１，１４２は、アンテナ素子１６０に対して垂直に配置されている。 The microphone signal lines 141 and 142 are arranged perpendicular to the antenna element 160.
　アンテナ素子１６０の導体部１６１（図７において省略）は、マイク１５０近傍に配置されている。 The conductor 161 (not shown in FIG. 7) of the antenna element 160 is disposed in the vicinity of the microphone 150.
　また、携帯無線装置１００は、マイク信号線１４１とマイク１５０とを、少なくともマイク１５０端部から遮断回路１８０まで覆うシールドパターン１７０を備えている。シールドパターン１７０は、例えばマイク基板１４５裏面の銅箔層により形成されている。 The portable wireless device 100 also includes a shield pattern 170 that covers the microphone signal line 141 and the microphone 150 from at least the end of the microphone 150 to the cutoff circuit 180. The shield pattern 170 is formed of, for example, a copper foil layer on the back surface of the microphone substrate 145.
　また、マイク信号線１４１とマイク信号線１４２との間に遮断回路Ｌ１，Ｌ３，Ｌ４を装荷し、シールドパターン１７０と回路基板１３０のＧＮＤとの間に遮断回路Ｌ２を装荷する。 Further, the cutoff circuits L1, L3, and L4 are loaded between the microphone signal line 141 and the microphone signal line 142, and the cutoff circuit L2 is loaded between the shield pattern 170 and the GND of the circuit board 130.
　遮断回路１８０（遮断回路Ｌ１～Ｌ４）は、音声帯域では低インピーダンス、通信帯域では高インピーダンスとなるインダクタンスＬにより構成する。 The cut-off circuit 180 (cut-off circuits L1 to L4) is configured by an inductance L that has a low impedance in the voice band and a high impedance in the communication band.
　以下、上述のように構成された携帯無線装置１００の動作について説明する。 Hereinafter, the operation of the mobile radio apparatus 100 configured as described above will be described.
　図８は、携帯無線装置１００の動作を説明するための筐体下端部１１０ａの要部拡大図である。 FIG. 8 is an enlarged view of a main part of the housing lower end portion 110a for explaining the operation of the portable wireless device 100. FIG.
　[マイク信号線１４０とアンテナ素子１６０の直交配置]
　図８に示すように、マイク信号線１４０（マイク信号線１４１，１４２）は、アンテナ素子１６０（より詳細には、導体部１６１）に対して垂直に配置する。また、アンテナ素子１６０の導体部１６１は、遮断回路１８０より筐体下端部１１０ａ底部側のマイク基板１４５上に配置する。 [An orthogonal arrangement of the microphone signal line 140 and the antenna element 160]
As shown in FIG. 8, the microphone signal line 140 (microphone signal lines 141 and 142) is arranged perpendicular to the antenna element 160 (more specifically, the conductor portion 161). The conductor 161 of the antenna element 160 is disposed on the microphone substrate 145 on the bottom side of the housing lower end 110a with respect to the blocking circuit 180.
　マイク信号線１４０とアンテナ素子１６０とを直交配置（特に、垂直配置）することにより、マイク信号線１４０を流れるマイク電流とアンテナ素子１６０の導体部１６１を流れるアンテナ電流とは直交する。マイク電流とアンテナ電流とを直交させることで、アンテナ性能への影響を低減することができる。 By arranging the microphone signal line 140 and the antenna element 160 orthogonally (particularly in a vertical arrangement), the microphone current flowing through the microphone signal line 140 and the antenna current flowing through the conductor 161 of the antenna element 160 are orthogonal. By making the microphone current and the antenna current orthogonal, the influence on the antenna performance can be reduced.
　[マイク信号線１４１等を導体部１６１から高周波的に浮かせる構成]
　マイク１５０とマイク信号線１４１とグランドパターンとを、遮断回路１８０によりアンテナ素子１６０の導体部１６１に対し、高周波的に浮かせる構成を採る。 [Configuration in which the microphone signal line 141 and the like are floated at a high frequency from the conductor 161]
A configuration is adopted in which the microphone 150, the microphone signal line 141, and the ground pattern are floated at a high frequency with respect to the conductor portion 161 of the antenna element 160 by the cutoff circuit 180.
　マイク１５０とマイク信号線１４１とグランドパターンとは、遮断回路１８０により高周波的に浮いた状態となるので、導体近接によるアンテナ性能への影響を低減することができる。 Since the microphone 150, the microphone signal line 141, and the ground pattern are floated at a high frequency by the cutoff circuit 180, the influence on the antenna performance due to the proximity of the conductor can be reduced.
　[アンテナ素子１６０／遮断回路１８０／マイク信号線１４０／マイク１５０／シールドパターン１７０の配置]
　図６に示すように、筐体１１０の筐体下端部１１０ａ中央には、マイク１５０の音孔（図示略）を配置する。アンテナ素子１６０の給電部１６２は、筐体下端部１１０ａの基板端部１３０ａに配置する。そして、アンテナ素子１６０は、上記音孔（図示略）を迂回するように構成する。 [Arrangement of antenna element 160 / breaking circuit 180 / microphone signal line 140 / microphone 150 / shield pattern 170]
As shown in FIG. 6, a sound hole (not shown) of the microphone 150 is arranged in the center of the housing lower end portion 110 a of the housing 110. The power feeding portion 162 of the antenna element 160 is disposed on the substrate end portion 130a of the housing lower end portion 110a. The antenna element 160 is configured to bypass the sound hole (not shown).
　迂回したアンテナ素子１６０と筐体１１０との位置関係は、以下の通りである。筐体下端部１１０ａ底面から、筐体平面視で見た場合、マイク１５０、マイク信号線１４１、アンテナ素子１６０、遮断回路１８０乃至マイク信号線１４２となるように配置される。シールドパターン１７０は、少なくともマイク１５０から遮断回路１８０までを覆う大きさに形成する。 The positional relationship between the bypassed antenna element 160 and the housing 110 is as follows. When viewed from the bottom surface of the housing lower end portion 110a in a plan view of the housing, the microphone 150, the microphone signal line 141, the antenna element 160, the cutoff circuit 180 through the microphone signal line 142 are arranged. The shield pattern 170 is formed in a size that covers at least the microphone 150 to the cutoff circuit 180.
　この構成により、マイク１５０とアンテナ素子１６０との実装面積を少なくすることができ、高いアンテナ性能と音響性能を得ることができる。 With this configuration, the mounting area between the microphone 150 and the antenna element 160 can be reduced, and high antenna performance and acoustic performance can be obtained.
　[遮断回路１８０の装荷]
　図９は、マイク１５０の等価回路図である。 [Loading cutoff circuit 180]
FIG. 9 is an equivalent circuit diagram of the microphone 150.
　図９に示すように、遮断回路１８０（遮断回路Ｌ１，Ｌ３，Ｌ４）は、マイク基板１４５上のマイク信号線１４１と回路基板１３０上のマイク信号線１４２との間に装荷され、マイク信号線１４１を回路基板１３０から高周波的に切り離す。 As shown in FIG. 9, the cutoff circuit 180 (the cutoff circuits L1, L3, and L4) is loaded between the microphone signal line 141 on the microphone board 145 and the microphone signal line 142 on the circuit board 130, and the microphone signal line. 141 is separated from the circuit board 130 in a high frequency manner.
　遮断回路１８０（遮断回路Ｌ１～Ｌ４）は、インダクタンスＬにより構成され、音声帯域では低インピーダンス、通信帯域では高インピーダンスとなる。遮断回路Ｌ１，Ｌ３，Ｌ４は、マイク基板１４５上のマイク信号線１４１と回路基板１３０上のマイク信号線１４２との間に装荷され、遮断回路Ｌ２は、シールドパターン１７０と回路基板１３０のＧＮＤとの間に装荷される。この構成により、図９に示すように、マイク基板１４５上のマイク信号線１４１とシールドパターン１７０とは、容量的に結合されている。 The cut-off circuit 180 (cut-off circuits L1 to L4) is composed of an inductance L, and has a low impedance in the voice band and a high impedance in the communication band. The blocking circuits L1, L3, and L4 are loaded between the microphone signal line 141 on the microphone board 145 and the microphone signal line 142 on the circuit board 130, and the blocking circuit L2 includes the shield pattern 170 and the GND of the circuit board 130. Will be loaded during. With this configuration, as shown in FIG. 9, the microphone signal line 141 and the shield pattern 170 on the microphone substrate 145 are capacitively coupled.
　遮断回路１８０は、通信帯域では高インピーダンスとすることにより、マイク１５０とマイク信号線１４１とグランドパターンとから導体部１６１を高周波的に浮かせることができる。さらに、アンテナ素子１６０の導体部１６１に対する近接導体の遮断効果を高めることができ、アンテナ性能への影響を低減することができる。また、回路基板１３０を経由してマイク１５０への高周波信号入力を抑えることができ、バーストノイズ発生を抑制することができる。 The cut-off circuit 180 can float the conductor 161 at high frequency from the microphone 150, the microphone signal line 141, and the ground pattern by using high impedance in the communication band. Furthermore, the shielding effect of the proximity conductor with respect to the conductor part 161 of the antenna element 160 can be enhanced, and the influence on the antenna performance can be reduced. In addition, high-frequency signal input to the microphone 150 via the circuit board 130 can be suppressed, and burst noise generation can be suppressed.
　また、遮断回路１８０は、音声帯域では低インピーダンスとすることにより、信号の伝達に対して影響を及ぼさない。 In addition, the cutoff circuit 180 does not affect the signal transmission by having a low impedance in the voice band.
　[アンテナ素子１６０／遮断回路１８０／マイク信号線１４０／マイク１５０／シールドパターン１７０の構成]
　図５に示すように、シールドパターン１７０は、マイク基板１４５の裏面に形成された銅箔層である。シールドパターン１７０は、マイク基板１４５上のマイク信号線１４１とマイク１５０を、マイク基板１４５の裏面に形成された銅箔層で覆う。 [Configuration of antenna element 160 / cutoff circuit 180 / microphone signal line 140 / microphone 150 / shield pattern 170]
As shown in FIG. 5, the shield pattern 170 is a copper foil layer formed on the back surface of the microphone substrate 145. The shield pattern 170 covers the microphone signal line 141 and the microphone 150 on the microphone substrate 145 with a copper foil layer formed on the back surface of the microphone substrate 145.
　また、マイク信号線１４０上（すなわちマイク信号線１４１とマイク信号線１４２間）に遮断回路Ｌ１，Ｌ３，Ｌ４を装荷し、シールドパターン１７０と回路基板１３０のＧＮＤとの間に遮断回路Ｌ２を装荷する。 Further, the cutoff circuits L1, L3, and L4 are loaded on the microphone signal line 140 (that is, between the microphone signal line 141 and the microphone signal line 142), and the cutoff circuit L2 is loaded between the shield pattern 170 and the GND of the circuit board 130. To do.
　この構成により、以下のようにアンテナ性能及び音響性能をいずれも向上させることができる。 This configuration can improve both antenna performance and acoustic performance as follows.
　（１）アンテナ性能
　携帯無線装置１００は、上述したシールドパターン１７０と遮断回路１８０とを備えることにより、マイク１５０とマイク信号線１４０の高周波帯域（音声に対して高周波）における電気長を最小限にすることができ、これらのアンテナ素子１６０への影響（導体近接及び共振発生）を抑えることができる。アンテナ素子１６０への影響を抑えることでアンテナ性能を向上させることができる。 (1) Antenna performance The portable wireless device 100 includes the shield pattern 170 and the cutoff circuit 180 described above, thereby minimizing the electrical length of the microphone 150 and the microphone signal line 140 in the high frequency band (high frequency with respect to sound). The influence on the antenna element 160 (conductor proximity and resonance) can be suppressed. By suppressing the influence on the antenna element 160, the antenna performance can be improved.
　（２）音響性能
　遮断回路１８０は、回路基板１３０経由で、マイク１５０への高周波信号入力を抑えることができ、バーストノイズ発生を抑制することができる。 (2) Acoustic performance The cutoff circuit 180 can suppress high-frequency signal input to the microphone 150 via the circuit board 130, and can suppress occurrence of burst noise.
　これに加えて、マイク１５０及びマイク信号線１４０を覆うシールドパターン１７０が、音声帯域において低インピーダンスでＧＮＤと繋がっている。このため、音響帯域における電気信号を損失なく伝送することが可能になる。 In addition to this, a shield pattern 170 covering the microphone 150 and the microphone signal line 140 is connected to GND with a low impedance in the voice band. For this reason, it becomes possible to transmit the electrical signal in the acoustic band without loss.
　以上詳細に説明したように、本実施の形態の携帯無線装置１００は、回路基板１３０に接続されたアンテナ素子１６０とマイク１５０とが、筐体下端部１１０ａに近接して配置される。アンテナ素子１６０は、導体部１６１と、回路基板１３０に接続された給電部１６２とを有し、マイク信号線１４０は、導体部１６１に直交して配置される。 As described above in detail, in the portable wireless device 100 of the present embodiment, the antenna element 160 and the microphone 150 connected to the circuit board 130 are disposed in proximity to the lower end portion 110a of the housing. The antenna element 160 includes a conductor portion 161 and a power feeding portion 162 connected to the circuit board 130, and the microphone signal line 140 is disposed orthogonal to the conductor portion 161.
　携帯無線装置１００は、マイク１５０とマイク信号線１４０とを覆うシールドパターン１７０と、マイク信号線１４０上に装荷された遮断回路Ｌ１，Ｌ３，Ｌ４と、シールドパターン１７０と回路基板１３０のＧＮＤとの間に装荷された遮断回路Ｌ２と、を備えている。 The portable radio apparatus 100 includes a shield pattern 170 that covers the microphone 150 and the microphone signal line 140, blocking circuits L 1, L 3, and L 4 loaded on the microphone signal line 140, and the shield pattern 170 and GND of the circuit board 130. And an interruption circuit L2 loaded in between.
　遮断回路Ｌ１～Ｌ４は、インダクタンスから構成され、音声帯域では低インピーダンス、通信帯域では高インピーダンスとなって、マイク１５０への高周波信号入力を遮断する。シールドパターン１７０は、高周波帯域における電気長を最小限にするように、マイク信号線１４０とマイク１５０とを最小限の幅で覆う。シールドパターン１７０は、マイク信号線１４１が配線されたマイク基板１４５の裏面の全面を銅箔層により覆い、かつ、遮断回路Ｌ２を介して回路基板１３０のＧＮＤに接続されていることから、マイク信号線１４０と容量的に結合されている。 Cut-off circuits L1 to L4 are composed of inductance, and have a low impedance in the voice band and a high impedance in the communication band, and block high-frequency signal input to the microphone 150. The shield pattern 170 covers the microphone signal line 140 and the microphone 150 with a minimum width so as to minimize the electrical length in the high frequency band. Since the shield pattern 170 covers the entire back surface of the microphone substrate 145 on which the microphone signal line 141 is wired with a copper foil layer and is connected to the GND of the circuit substrate 130 via the cutoff circuit L2, the microphone signal Capacitively coupled to line 140.
　以上、シールドパターン１７０と遮断回路１８０とを備えることにより、マイク１５０とマイク信号線１４０との高周波帯域における電気長を最小限にすることができ、これらのアンテナ素子１６０への影響（導体近接及び共振発生）を抑えることができる。アンテナ素子１６０への影響を抑えることで、アンテナ性能を向上させることができる。 As described above, by providing the shield pattern 170 and the cutoff circuit 180, the electrical length of the microphone 150 and the microphone signal line 140 in the high frequency band can be minimized, and the influence on the antenna element 160 (proximity of conductor and (Resonance generation) can be suppressed. By suppressing the influence on the antenna element 160, the antenna performance can be improved.
　また、遮断回路１８０は、回路基板１３０経由で、マイク１５０への高周波信号入力を抑えることができ、バーストノイズ発生を抑制することができる。 Further, the cutoff circuit 180 can suppress high-frequency signal input to the microphone 150 via the circuit board 130, and can suppress occurrence of burst noise.
　さらに、シールドパターン１７０は、音声帯域において低インピーダンスで回路基板１３０のＧＮＤと繋がっているため、音響帯域におけるノイズをキャンセルする効果を得ることができる。 Furthermore, since the shield pattern 170 is connected to the GND of the circuit board 130 with low impedance in the voice band, an effect of canceling noise in the acoustic band can be obtained.
　このように、携帯無線装置１００は、マイク１５０とアンテナ素子１６０とを近接配置させつつ、導体近接によるアンテナ性能への影響を低減することができ、マイク音響性能とアンテナ性能とを両立させることができる。 As described above, the portable wireless device 100 can reduce the influence on the antenna performance due to the proximity of the conductor while arranging the microphone 150 and the antenna element 160 close to each other, and can achieve both the microphone acoustic performance and the antenna performance. it can.
　また、本実施の形態では、マイク信号線１４０は、アンテナ素子１６０に対して垂直に配置し、かつ、アンテナ素子１６０の導体部１６１は、筐体下端部１１０ａに配置することで、導体近接によるアンテナ性能への影響を低減することができる。 Further, in the present embodiment, the microphone signal line 140 is disposed perpendicular to the antenna element 160, and the conductor portion 161 of the antenna element 160 is disposed on the lower end portion 110a of the housing, thereby being close to the conductor. The influence on the antenna performance can be reduced.
　また、本実施の形態では、筐体下端部１１０ａ中央に、マイク１５０の音孔を配置するとともに、アンテナ素子１６０の給電部１６２は、筐体下端部１１０ａまで延びた基板端部１３０ａに配置されている。また、アンテナ素子１６０は、上記音孔を迂回するように配置されている。これにより、マイク１５０及びアンテナ素子１６０の筐体１１０に対する実装面積を少なくしつつ、高いアンテナ性能とマイク性能を得ることができる。 In the present embodiment, the sound hole of the microphone 150 is disposed at the center of the housing lower end portion 110a, and the power feeding portion 162 of the antenna element 160 is disposed on the substrate end portion 130a extending to the housing lower end portion 110a. ing. The antenna element 160 is arranged so as to bypass the sound hole. Thereby, high antenna performance and microphone performance can be obtained while reducing the mounting area of the microphone 150 and the antenna element 160 with respect to the housing 110.
　以上の説明は本発明の好適な実施の形態の例証であり、本発明の範囲はこれに限定されることはない。 The above description is an illustration of a preferred embodiment of the present invention, and the scope of the present invention is not limited to this.
　回路基板に接続されたアンテナ素子と、アンテナ素子近傍に配置されたマイクとを有する携帯無線装置であればどのような装置にも適用できる。例えば、バー構造を持つ携帯無線装置は勿論のこと、携帯電話機／ＰＨＳ（Personal Handy-Phone System）、ＰＤＡ（Personal Digital Assistants）等の携帯情報端末、ノート型パソコン等の情報処理装置にも適用可能である。 Any portable wireless device having an antenna element connected to a circuit board and a microphone arranged in the vicinity of the antenna element can be applied. For example, it can be applied not only to portable wireless devices with a bar structure, but also to portable information terminals such as mobile phones / PHS (Personal Handy-Phone System) and PDA (Personal Digital Assistants), and information processing devices such as notebook computers. It is.
　また、上記各実施の形態では、携帯無線装置という名称を用いたが、これは説明の便宜上であり、携帯無線機、無線装置等でもよいことは勿論である。 In each of the above embodiments, the name “mobile radio apparatus” is used. However, this is for convenience of explanation, and it is needless to say that a mobile radio apparatus, a radio apparatus, or the like may be used.
　また、上記携帯無線装置を構成する筐体、アンテナ素子、マイク信号線の種類、数及び接続方法などは前述した実施の形態に限られない。 Further, the type, number, connection method, and the like of the casing, antenna elements, microphone signal lines, and the like constituting the portable wireless device are not limited to the above-described embodiments.
　２０１１年５月１３日出願の特願２０１１－１０８２００の日本出願に含まれる明細書、図面及び要約書の開示内容は、すべて本願に援用される。 The disclosure of the specification, drawings and abstract contained in the Japanese application of Japanese Patent Application No. 2011-108200 filed on May 13, 2011 is incorporated herein by reference.
　本発明に係る携帯無線装置は、マイクとアンテナ素子とを近接配置させつつ、導体近接によるアンテナ性能への影響を低減し、マイク音響性能とアンテナ性能とを両立した携帯無線装置を提供できる。バー構造を持つ携帯電話機等の携帯無線装置などに有用である。 The portable radio apparatus according to the present invention can provide a portable radio apparatus having both the microphone acoustic performance and the antenna performance by reducing the influence on the antenna performance due to the proximity of the conductor while arranging the microphone and the antenna element close to each other. This is useful for portable wireless devices such as mobile phones having a bar structure.
　１００　携帯無線装置
　１１０　筐体
　１１０ａ　筐体下端部
　１３０　回路基板
　１３０ａ　基板端部
　１４０，１４１，１４２　マイク信号線
　１４５　マイク基板
　１５０　マイク
　１６０　アンテナ素子
　１６１　導体部
　１６２　給電部
　１７０　シールドパターン
　１８０，Ｌ１，Ｌ２，Ｌ３，Ｌ４　遮断回路
  DESCRIPTION OF SYMBOLS 100 Portable radio apparatus 110 Case 110a Case lower end part 130 Circuit board 130a Board end part 140,141,142 Microphone signal line 145 Microphone board 150 Microphone 160 Antenna element 161 Conductor part 162 Power supply part 170 Shield pattern 180, L1, L2, L3, L4 cutoff circuit

Claims (9)

  1. 　回路基板と、前記回路基板に接続されたアンテナ素子と、前記アンテナ素子近傍に配置されたマイクと、を有する携帯無線装置であって、
    　前記マイクと前記回路基板とを接続するマイク信号線と、
    　前記マイク及び前記マイク信号線を覆うシールドパターンと、
    　前記マイク信号線上に装荷され、かつ、前記シールドパターンと前記回路基板のＧＮＤとの間に装荷され、音声帯域では低インピーダンス、通信帯域では高インピーダンスとなって、前記マイクへの高周波信号入力を遮断する遮断回路と、
    　を備える携帯無線装置。     A portable wireless device having a circuit board, an antenna element connected to the circuit board, and a microphone disposed in the vicinity of the antenna element,
    A microphone signal line connecting the microphone and the circuit board;
    A shield pattern covering the microphone and the microphone signal line;
    Loaded on the microphone signal line, and loaded between the shield pattern and the GND of the circuit board, has low impedance in the voice band and high impedance in the communication band, and blocks high-frequency signal input to the microphone A shut-off circuit to
    A portable wireless device.
  2. 　前記アンテナ素子と前記マイクとは、筐体下端部に近接配置される、請求項１記載の携帯無線装置。 The portable wireless device according to claim 1, wherein the antenna element and the microphone are arranged close to a lower end portion of the housing.
  3. 　前記アンテナ素子は、導体部と、前記回路基板に接続された給電部と、を有し、
    　前記マイク信号線は、前記導体部に直交する、請求項１記載の携帯無線装置。     The antenna element has a conductor part and a power feeding part connected to the circuit board,
    The portable wireless device according to claim 1, wherein the microphone signal line is orthogonal to the conductor portion.
  4. 　前記マイクは、前記マイク信号線が配線されたマイク基板上に設置され、
    　前記シールドパターンは、前記マイク基板の裏面に形成された銅箔層からなる、請求項１記載の携帯無線装置。     The microphone is installed on a microphone substrate on which the microphone signal line is wired,
    The portable radio apparatus according to claim 1, wherein the shield pattern is formed of a copper foil layer formed on a back surface of the microphone substrate.
  5. 　前記シールドパターンは、前記マイク信号線と前記マイクとを最小限の幅で覆う、請求項１記載の携帯無線装置。 The portable wireless device according to claim 1, wherein the shield pattern covers the microphone signal line and the microphone with a minimum width.
  6. 　前記シールドパターンは、高周波帯域における電気長を最小限にするように、前記マイク信号線と前記マイクとを覆う、請求項１記載の携帯無線装置。 The portable wireless device according to claim 1, wherein the shield pattern covers the microphone signal line and the microphone so as to minimize an electrical length in a high frequency band.
  7. 　前記シールドパターンは、音声帯域において、低インピーダンスで前記回路基板のＧＮＤに繋がる、請求項１記載の携帯無線装置。 The portable wireless device according to claim 1, wherein the shield pattern is connected to the GND of the circuit board with a low impedance in a voice band.
  8. 　前記シールドパターンは、前記マイク信号線と容量結合する、請求項１記載の携帯無線装置。 The portable radio apparatus according to claim 1, wherein the shield pattern is capacitively coupled to the microphone signal line.
  9. 　前記遮断回路は、インダクタンスである、請求項１記載の携帯無線装置。
          The portable wireless device according to claim 1, wherein the blocking circuit is an inductance.
PCT/JP2012/003088 2011-05-13 2012-05-11 Portable wireless device WO2012157233A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2011108200A JP2012239118A (en) 2011-05-13 2011-05-13 Portable wireless device
JP2011-108200 2011-05-13

Publications (1)

Publication Number Publication Date
WO2012157233A1 true WO2012157233A1 (en) 2012-11-22

Family

ID=47176585

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2012/003088 WO2012157233A1 (en) 2011-05-13 2012-05-11 Portable wireless device

Country Status (2)

Country Link
JP (1) JP2012239118A (en)
WO (1) WO2012157233A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013101874A (en) * 2011-11-09 2013-05-23 Panasonic Corp Portable terminal

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20230034696A (en) * 2021-09-03 2023-03-10 삼성전자주식회사 An electronic device comprising an antenna and microphone

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000165982A (en) * 1998-11-26 2000-06-16 Nec Shizuoka Ltd Small-sized microphone for portable telephone set
JP2002246822A (en) * 2001-02-16 2002-08-30 Mitsubishi Electric Corp Antenna device for portable terminal
JP2006067523A (en) * 2004-08-30 2006-03-09 Kyocera Corp Radio communication terminal
JP2008072373A (en) * 2006-09-13 2008-03-27 Toa Corp Wireless microphone device
JP2011097306A (en) * 2009-10-28 2011-05-12 Kyocera Corp Mobile terminal

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000165982A (en) * 1998-11-26 2000-06-16 Nec Shizuoka Ltd Small-sized microphone for portable telephone set
JP2002246822A (en) * 2001-02-16 2002-08-30 Mitsubishi Electric Corp Antenna device for portable terminal
JP2006067523A (en) * 2004-08-30 2006-03-09 Kyocera Corp Radio communication terminal
JP2008072373A (en) * 2006-09-13 2008-03-27 Toa Corp Wireless microphone device
JP2011097306A (en) * 2009-10-28 2011-05-12 Kyocera Corp Mobile terminal

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013101874A (en) * 2011-11-09 2013-05-23 Panasonic Corp Portable terminal

Also Published As

Publication number Publication date
JP2012239118A (en) 2012-12-06

Similar Documents

Publication Publication Date Title
US8606195B2 (en) Radio
WO2012160820A1 (en) Portable wireless device
JP2004104419A (en) Antenna for portable radio
JP5413921B2 (en) Portable wireless device
JPWO2009034648A1 (en) Wireless communication device
JP5297857B2 (en) Mobile device
JP5583030B2 (en) Wireless terminal device
WO2012157233A1 (en) Portable wireless device
JP5086236B2 (en) Portable radio
JP2008166991A (en) Wireless device
JP2008227560A (en) Portable wireless apparatus
JP4642568B2 (en) Foldable portable electronic device
JP5674415B2 (en) Mobile communication terminal
JP2009188714A (en) Portable telephone device
JP2012227743A (en) Portable transceiver
JPWO2011115094A1 (en) Noise suppression structure
JP4615451B2 (en) Portable radio
KR100700575B1 (en) Multi-layer type circuit board for mobile communication terminal
JP2004282534A (en) Antenna assembly and radio communication terminal equipment
JP5556257B2 (en) Wireless communication device
JP2012253588A (en) Portable terminal, and antenna gain improvement method
KR200426917Y1 (en) Mobile phone
JP2013232814A (en) Portable wireless device
JP5294652B2 (en) Communication equipment
KR101826584B1 (en) Antenna with magnetic sheet for suppressing hand effect and wireless communication device including the same

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 12785374

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 12785374

Country of ref document: EP

Kind code of ref document: A1