WO2005071855A1 - 通信装置 - Google Patents
通信装置 Download PDFInfo
- Publication number
- WO2005071855A1 WO2005071855A1 PCT/JP2004/000587 JP2004000587W WO2005071855A1 WO 2005071855 A1 WO2005071855 A1 WO 2005071855A1 JP 2004000587 W JP2004000587 W JP 2004000587W WO 2005071855 A1 WO2005071855 A1 WO 2005071855A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- antenna
- substrate
- ground wire
- slot
- terminal device
- Prior art date
Links
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
- H01Q1/2258—Supports; Mounting means by structural association with other equipment or articles used with computer equipment
- H01Q1/2275—Supports; Mounting means by structural association with other equipment or articles used with computer equipment associated to expansion card or bus, e.g. in PCMCIA, PC cards, Wireless USB
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
- H01Q9/04—Resonant antennas
- H01Q9/30—Resonant antennas with feed to end of elongated active element, e.g. unipole
Definitions
- the present invention relates to a powerful communication device used by inserting it into a terminal device such as a personal computer or PDA.
- reception processing of a signal sent from a communication partner of the terminal equipment or transmission processing for transmitting a signal input from the terminal equipment to the communication partner of the terminal equipment by being inserted into the slot of the terminal equipment Do card type radios known!
- Such a card-type wireless device is used by being inserted into a slot of a terminal device, and there is a problem that the reception sensitivity is deteriorated due to the noise of the terminal device such as a personal computer or PDA. Therefore, as a conventional means for suppressing the deterioration of the reception sensitivity, a means for setting the antenna length to a point where the current flowing in the casing of the wireless device is small or a means for moving the antenna away from the terminal device are known.
- the conventional card-type portable wireless device 1 shown in FIG. 1 includes a card unit 4 inserted into the slot 3 of the terminal device 2, a wireless unit 6 having an antenna 5 for performing wireless communication, a power supply unit 4 and a wireless unit. It is composed of a cable 7 connecting the part 6 and the like. Then, when the card unit 4 is inserted into the slot 3 and used, by separating the radio unit 6 (antenna 5) from the terminal device 2, the noise of the terminal device 2 is prevented from deteriorating the reception sensitivity. There is.
- the object of the present invention is to reduce the influence of the noise of the terminal equipment and to improve the wireless performance by suppressing the deterioration of the reception sensitivity, and to be able to be further miniaturized and to be portable. It is to be.
- the purpose of this is to provide an antenna, a ground wire that resonates with the fourth antenna, and a wireless circuit for performing wireless processing on the substrate, and when the communication device is inserted into the slot of the terminal device, This can be achieved by inserting a slot other than the portion where the ground wire is provided.
- Fig. 1 shows a state of use of a conventional communication device
- FIG. 2 is a perspective view showing a communication apparatus according to Embodiment 1 of the present invention.
- FIG. 3A is a plan view of a substrate according to Embodiment 1 of the present invention.
- FIG. 3B is a plan view of a substrate according to Embodiment 1 of the present invention.
- FIG. 3C is a plan view of a substrate according to Embodiment 1 of the present invention.
- FIG. 4 is a diagram showing a state in which the communication device according to Embodiment 1 of the present invention is inserted into a terminal device;
- FIG. 5A is a diagram showing a mounting state of ⁇ Z 4 antenna according to the first embodiment of the present invention.
- Fig. 5 ⁇ ⁇ relates to a first embodiment of the present invention
- Figure 6A shows the antenna current distribution of the communication device
- FIG. 6B is a diagram showing the antenna current distribution of the communication device
- Fig. 6C shows the antenna current distribution of the communication device.
- FIG. 7 is a perspective view of a communication device according to Embodiment 2 of the present invention.
- FIG. 8A is a plan view of a substrate according to Embodiment 2 of the present invention.
- FIG. 8B is a plan view of a substrate according to Embodiment 2 of the present invention.
- FIG. 9 is a diagram showing a state in which the communication device according to Embodiment 3 of the present invention is inserted into a terminal device;
- FIG. 10 is a perspective view of a communication apparatus according to Embodiment 4 of the present invention.
- FIG. 11A is a plan view of an upper substrate according to a fourth embodiment of the present invention, FIG.
- FIG. 11 B is a plan view of a lower substrate according to a fourth embodiment of the present invention.
- FIG. 12 is a diagram showing a state in which the communication device according to Embodiment 4 of the present invention is inserted into a terminal device.
- FIG. 2 is a perspective view showing the configuration of the communication device 20 according to Embodiment 1 of the present invention
- FIGS. 3A to 3C are plan views showing the configuration of the substrate 16 of the communication device 20.
- the communication device 20 includes: a substrate 16 housed in a housing 17; and a / 4 antenna 10 protruding from the housing 17.
- the substrate 16 is composed of two layers, an upper substrate 16a and a lower substrate 16b, as shown in FIGS. 3B and 3C.
- An upper substrate 16a is provided with an L / 4 antenna 10, a matching circuit 12 and a radio circuit 13 and a lower substrate 16b is provided with a ground wire 14 and a ground (hereinafter referred to as "GND") 15 .
- GND ground
- the ⁇ / 4 antenna 10, the matching circuit 12, the radio circuit 13, the ⁇ 14 wire 14 and the GND 15 may be provided on the same layer of the same substrate.
- the ⁇ 4 antenna 10 is a ⁇ 4 monopole antenna attached to the substrate 16 substantially perpendicular to the substrate 16 and electrically connected to the radio circuit 13 via the feeding point 1 1 and the matching circuit 12 on the substrate 16 Connected to
- the matching circuit 12 is realized by using a lumped constant which is a component such as an inductor element, a capacitor element, and a resistor element, and is disposed at a position not interfering with the ground wire 14.
- the radio circuit 13 processes the signal transmitted or received by the ⁇ / 4 antenna 10.
- the ground wire 14 has a length (H1 + H2) of the center line of the inverted L-shaped ground wire 14 as ⁇ 4 as shown in Fig. 3 and copper foil on the substrate 16 on which the wireless circuit 13 is printed. It is molded by In addition, the ground wire 14 has an open termination at the first end (left end in Fig. 3); 4 antennas 10 in the vicinity, and the second end (right end in Fig. 3) is shorted by GND 15. is there. This is a structure in which the GND 15 is resonated by the ground wire 14. By concentrating the current flowing through the GND 15 to the ground wire 14, an effect of reducing the current of the GND 15 can be obtained.
- the GND 15 functions as the GND of the communication device 20.
- the housing 17 is made of metal or resin, and is for housing the substrate 16 to which the antenna 4 is attached.
- the communication device 20 is a portable card type, as shown in FIG. 4, and is used by inserting it into a slot 41 of a terminal device 40 such as a personal computer or a PDA.
- a terminal device 40 such as a personal computer or a PDA.
- the ground wire 14 which is a portion for concentrating the GND current, protrudes outside from the terminal device 40 on the substrate 16. Place in part.
- the ⁇ 4 antenna 10 is attached to the substrate 16 so that the longitudinal direction (vertical direction in FIG. 2) of the Z4 antenna 10 is perpendicular to the substrate 16. .
- the ⁇ 104 antenna 10 can be configured to be bendable as shown in, for example, FIG. 5 ⁇ and FIG. 5 ⁇ .
- a hinge structure is provided to the feeding pin 10a standing at the feeding point 11 on the substrate 16 and the four antennas 10 standing from the feeding pin 10a.
- ⁇ 4 antenna 10 through the axis 10 b connecting the feed pin 10 a and the iZ 4 antenna 10. Will rotate.
- a shaft portion may be provided between the feed pin 10 a and the 1 ⁇ 4 antenna 10 so that the ⁇ 4 antenna 10 can be further separated from the terminal device 40.
- the length of the shaft portion is the portion where the current is the largest due to the characteristics of the ⁇ 4 antenna 10, and the portion that becomes horizontal due to the swing is susceptible to noise and should be as short as possible.
- the hinge portion may have a rotatable structure, and may be disposed in the direction in which the LZ4 antenna 10 is located near the top of the ground wire 14 when the ⁇ 4 antenna 10 is folded.
- FIG. 6A shows the current distribution d1 in the LZ2 antenna 38
- FIG. 6B shows the current distribution d2 of the ⁇ 2 antenna 10 when the ground wire 14 is not provided.
- C shows the current distribution d 3 of the LZ 2 antenna 10 when the ground wire 14 is provided.
- FIG. 6A in the current distribution d1 of the second antenna 38, a peak of current is present in the second antenna 38, and almost no current flows in the casing 17.
- the current distribution d 2 of the ⁇ 4 antenna 10 when the ground wire 14 is not provided is as shown in FIG. 6B, since the peak value of the current exists on the case 17, the current flowing in the case 17 is very To grow.
- the housing 17 inserted into the terminal device 40 functions as an antenna to receive a large amount of noise.
- the current distribution d3 of the antenna 4 when the ground wire 14 is provided is concentrated on the ground wire 14. Since the ground wire 14 is disposed outside the terminal device 40 when the communication device 20 is inserted into the terminal device 40, it does not receive much noise.
- the / 4 antenna 10 and the earth spring 14 resonate and the ground 15 resonates the GND 15 so that the current flowing to the GND 15 is concentrated to the ground 14.
- GND current other than ground wire 14 can be reduced.
- the current flowing to the housing 17 can be reduced to reduce the influence of the noise of the terminal device 40 and the deterioration of the reception sensitivity can be suppressed, so that the wireless performance can be improved.
- the terminal Since the part to be inserted into the container 40 and the antenna part are integrally formed on the substrate 16 without using a cable, the power loss due to the cable can be minimized. Further, according to the first embodiment, since the length of the antenna is 4/4, the communication device 20 can be miniaturized.
- the LZ 4 antenna 10 since the LZ 4 antenna 10 can be used, when the ⁇ 4 antenna 10 can be folded, the 4 antenna 10 can be obtained from the housing 17. It does not pop out and can be made bulky when carried around. Further, according to the first embodiment, since the i Z 4 antenna 10 has a monopole shape in which the longitudinal direction is perpendicular to the substrate, the antenna horizontal portion susceptible to the noise of the terminal device 40 is eliminated. be able to. Further, according to the first embodiment, since the ground wire 14 is formed of copper foil on the substrate 16, the communication wire 2 can be formed without newly using a ground wire. The manufacturing cost of 0 can be reduced.
- FIG. 7 is a diagram showing a configuration of a communication apparatus 70 according to Embodiment 2 of the present invention
- FIG. 8 is a configuration of an upper substrate 16 a in the communication apparatus 70 according to Embodiment 2 of the present invention
- FIG. 8B is a view showing the configuration of the lower substrate 16 b in the communication device 70 according to Embodiment 2 of the present invention.
- the communication device 70 according to the second embodiment includes the contact pin 72 and the contact pin 72 as shown in FIGS. 7 to 8B.
- a contact 7 3 is added, and a metal sheet, wire 7 1 is provided instead of the ground wire 14.
- FIGS. 7 to 8B the same components as those in FIGS. 2 to 3C are denoted by the same reference numerals, and the description thereof will be omitted.
- the communication device 70 is a portable card type, and is used by inserting it into the slot 41 of a terminal device 40 such as a personal computer or PDA.
- the communication device 70 comprises a substrate 16 housed in a housing 17 and a ⁇ 4 antenna 1 0 projecting from the housing 17.
- the substrate 16 is an upper substrate 16a and a lower substrate 16b. And consists of two layers.
- Upper substrate 16 a is provided with: 1 ⁇ 4 antenna 10, matching circuit 12, radio circuit 13, GND 15 and contact pin 72, and lower substrate 16 b is provided with metal sheet ground wire 7 1 and contact portion 73.
- ⁇ ⁇ ⁇ ⁇ / 4 antenna 10, matching circuit 12, no fountain circuit 1, 3, GND 15, contact pin 72, metal plate ground wire 71, and contact portion 73 are provided in the same layer of the same substrate. It is good.
- the / 4 antenna 10 is an E4 monopole antenna, and is connected to the radio circuit 13 through a charging point 11 on the substrate 16 and a matching circuit 12.
- the metal sheet ground wire 71 is formed by punching a metal plate material by press processing, for example, and is mounted inside the housing, and as shown in FIG. 8, the length of the center line ( ⁇ 3 + ⁇ 4) And the length from the metal plate ground wire 71 to the GND 15 at the contact pin 72 is L / 4. Also, the metal plate ground wire 71 has an open end near the 14 antenna 10 at the first end (the left end in FIG. 8) and a contact portion at the second end (the right end in the FIG. 8). It is 73.
- the upper surface of the upper substrate 16a (surface on the back side with respect to the paper surface of FIG. 8A) and the lower surface of the lower substrate 16b (surface of the front side with respect to the paper surface of FIG. 8B) face each other.
- the contact pin 72 having a height from the contact portion 73 to the GND 15.
- the metal plate ground wire 71 and the G ND 15 are electrically connected, and the GND 15 is resonated by the metal plate ground wire 71.
- the housing 17 is formed of metal
- the metal sheet ground wire 71 and the housing 17 may be integrated.
- the metal plate ground wire 71 is insulated from the conductive parts other than the housing 17.
- the ⁇ / 4 antenna 10 and the metal plate ground wire 71 resonate, and the metal plate ground wire 71 resonates the GND 15 to generate a current flowing to the GND 15. It is possible to concentrate on the metal plate ground wire 71 and reduce the GND current other than the metal plate ground wire 71. As a result, the current flowing to the housing 17 is reduced to reduce the influence of noise of the terminal device and to suppress the deterioration of the reception sensitivity, so that the wireless performance can be improved. Further, according to the second embodiment, the portion inserted into the terminal device 40 and the antenna portion use a cable. Because they are integrally formed on the substrate 16, the power loss due to the cable can be minimized.
- the communication device 70 can be miniaturized. Further, according to the second embodiment, since ⁇ 4 antenna 10 can be used, when ⁇ 4 antenna 10 is made foldable, ⁇ ⁇ 4 antenna 10 pops out from case 17 When you carry it, you can make it not bulky. Further, according to the second embodiment, since the antenna 4 antenna 10 has a monopole shape in which the longitudinal direction is perpendicular to the substrate, the antenna horizontal portion susceptible to the noise of the terminal device 40 is eliminated. be able to. Further, according to the second embodiment, when the metal plate ground wire 71 is formed integrally with the casing 17, the metal plate ground wire 71 and the casing 17 can be simultaneously formed. Therefore, the manufacturing cost of the communication device 70 can be reduced. Further, according to the second embodiment, since the metal plate ground wire 71 is mounted inside the housing 17, the space of the substrate 16 can be effectively used.
- FIG. 9 is a diagram showing a state in which the communication device 90 according to Embodiment 3 of the present invention is inserted into the terminal device 40.
- the communication device 90 is rotatably attached to the communication device 90 in place of the LZ 4 antenna 10 of the communication device 20 shown in FIGS. 2 to 3C; FIG. Since the configuration is the same as that of FIG.
- the communication device 90 is a portable card type, and is used by inserting it into a slot 41 of a terminal device 40 such as a personal computer or D-D.
- the communication device 90 includes a substrate 16 housed in a housing 17 and an L Z 4 antenna 9 1 protruding from the housing 17.
- the housing 17 is for housing a substrate on which the ⁇ / 4 antenna 91 is rotatably mounted.
- the 4 antenna 91 is located on the side of the housing 17 and can not be inserted into the terminal device 40 in the folded state. This is compared to the area of slot 4 1 of terminal device 4 0/4 antenna 9 1 in the folded state. This is because the total area of the tip of body 17 (the end of communication device 90 in the insertion direction into slot 41) and the area of the tip of ⁇ 4 antenna 91 are larger by S 1. Ru. That is, when the ⁇ 4 antenna 9 1 is folded and inserted into the slot 4 1, the tip of the ⁇ 4 antenna 9 1 abuts on the case of the terminal device 40. Communication device 90 can not be inserted in slot 4 1 any more. Therefore, since the LZ 4 antenna 91 needs to be erected in the use state, it can not be used with the ⁇ / 4 antenna 91 folded.
- the user in addition to the effects of the first embodiment, the user must always raise the ⁇ ⁇ ⁇ ⁇ 4 antenna 91 when using the LZ 4 antenna 91.
- the antenna folding state (horizontal state) susceptible to the noise of the terminal device 40 can be avoided without being conscious of it. By this, it is possible to obtain a communication apparatus 90 which is less susceptible to the noise of the terminal device 40 at the time of use, suppresses the deterioration of the reception sensitivity, and is excellent in the wireless performance.
- FIG. 10 is a diagram showing the configuration of a communication apparatus 100 0 according to Embodiment 4 of the present invention
- FIG. 11 1 is a communication apparatus according to Embodiment 4 of the present invention
- FIG. 1 1 B is a view showing a configuration of a lower substrate 1 10 2 of a communication apparatus 1 0 0 0 according to Embodiment 4 of the present invention
- FIG. 12 is a diagram showing a state in which the communication device 1000 according to Embodiment 4 of the present invention is inserted into the terminal device 40.
- the communication device 100 according to the fourth embodiment is as shown in FIG.
- the communication device 100 In place of the 10 10 antenna, it has the 4 antenna 1 0 0 1 and has the upper substrate 1 1 0 1 instead of the upper substrate 1 6 a, and the lower substrate 1 1 0 2 instead of the lower substrate 1 6 b
- the upper housing 1 0 0 2 and the lower housing 1 0 0 3 are provided, and the hinge portion 1 0 0 4 is provided to provide the upper housing 1 0 0 2 and the lower housing It connects pivotably with the body.
- FIGS. 1 to 0 the same components as those in FIGS. The first symbol is attached and the description is omitted.
- an upper substrate 101 is accommodated in the upper casing 1002, and a lower substrate 1 102 is accommodated in the lower casing 1003.
- the communication device 1000 is a portable card type, and is inserted into a slot 41 of a terminal device 40 such as a personal digital assistant (PDA).
- the ⁇ 4 antenna 1001 is a ⁇ 4 monopole antenna, and is connected to the radio circuit 13 through the feeding point 1 1 and the matching circuit 12.
- part or all of the feeding point 11, the matching circuit 12, the radio circuit 13, and the 4 antennas 1001 are provided on the upper substrate 1002.
- the ground wire 14 is formed of copper foil printed on the lower substrate 1003 with a length of 4 or a metal plate mounted inside the housing, and has a first end (left end in FIG. 11 B).
- This structure has an open termination in the vicinity of ⁇ ⁇ ⁇ ⁇ 4 antenna 1001 and a short at GND terminal 15 at the second end (right end in Fig. 11 B), and resonance is caused by GND 15 at 1/4 ground wire 14
- the ground wires 14 and GND 15 are provided on the lower substrate 1 102.
- upper housing 1002 is rotatably connected to lower housing 1003 via hinge portion 1004. Then, as shown in FIG. 12, the upper case 1002 is positioned above the lower case 1003 and can not be inserted into the terminal device 40 in the folded state where it is closed. This corresponds to the area of the end of the upper case 1002 and the area of the end of the lower case 1003 when the upper case 1002 and the lower case 1003 are stacked, as compared to the area of the slot 41 of the terminal device 40.
- the combined area is larger by S2. That is, when inserting the communication device 1000 into the slot 41 with the upper case 1002 and the lower case 1003 closed, the tip of the upper case 1002 abuts on the case of the terminal device 40.
- the communication device 1000 can not enter slot 41 any more. For this reason, since it is necessary to raise the upper housing 1002, that is, the _4 antenna 1001 in the use state, it can not be used in the state where the ⁇ 4 antenna 1001 is folded.
- lower housing 100 with upper housing 1002 and lower housing 1003 open.
- the ground wire 14 which is a portion for concentrating the GND current, is disposed at a portion projecting outward from the terminal device 40 on the board housed in the lower housing 1003. Therefore, the influence of the noise of the terminal device 40 can be reduced.
- the angle between the upper housing 1002 and the lower housing 1003 is preferably 90 degrees, but the same effect can be obtained if the angle is close to 90 degrees. Is obtained.
- the fourth embodiment in addition to the effects of the first embodiment, when the ⁇ ⁇ 4 antenna 1001 is used, it is necessary to make the ⁇ 4 antenna 1001 stand up. It is possible to avoid the antenna folding state (horizontal state) susceptible to the noise of the device 40 without being conscious of it. By this, it is possible to obtain the communication apparatus 1000 excellent in the wireless performance by suppressing the deterioration of the receiving sensitivity and being less susceptible to the noise of the terminal device 40 at the time of use.
- the wireless performance can be improved by reducing the influence of the noise of the terminal device and suppressing the deterioration of the reception sensitivity, and further downsizing can be achieved. Even if it is not bulky.
- the present invention is suitable for use in, for example, a card type communication device inserted and used in a terminal device such as a personal computer or a PDA.
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- Engineering & Computer Science (AREA)
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Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2004/000587 WO2005071855A1 (ja) | 2004-01-23 | 2004-01-23 | 通信装置 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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PCT/JP2004/000587 WO2005071855A1 (ja) | 2004-01-23 | 2004-01-23 | 通信装置 |
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WO2005071855A1 true WO2005071855A1 (ja) | 2005-08-04 |
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ID=34805290
Family Applications (1)
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PCT/JP2004/000587 WO2005071855A1 (ja) | 2004-01-23 | 2004-01-23 | 通信装置 |
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Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2000010681A (ja) * | 1998-06-18 | 2000-01-14 | Mitsubishi Electric Corp | 無線通信用pcカード装置 |
JP2000013118A (ja) * | 1998-06-25 | 2000-01-14 | Matsushita Electric Ind Co Ltd | 移動体通信端末器用アンテナ装置 |
JP2001102949A (ja) * | 1999-09-28 | 2001-04-13 | Matsushita Electric Ind Co Ltd | 無線通信端末装置 |
JP2001102834A (ja) * | 1999-09-28 | 2001-04-13 | Matsushita Electric Ind Co Ltd | 無線通信装置 |
JP2002353719A (ja) * | 2001-05-30 | 2002-12-06 | Sony Corp | Sar低減装置および無線通信装置 |
-
2004
- 2004-01-23 WO PCT/JP2004/000587 patent/WO2005071855A1/ja active Application Filing
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2000010681A (ja) * | 1998-06-18 | 2000-01-14 | Mitsubishi Electric Corp | 無線通信用pcカード装置 |
JP2000013118A (ja) * | 1998-06-25 | 2000-01-14 | Matsushita Electric Ind Co Ltd | 移動体通信端末器用アンテナ装置 |
JP2001102949A (ja) * | 1999-09-28 | 2001-04-13 | Matsushita Electric Ind Co Ltd | 無線通信端末装置 |
JP2001102834A (ja) * | 1999-09-28 | 2001-04-13 | Matsushita Electric Ind Co Ltd | 無線通信装置 |
JP2002353719A (ja) * | 2001-05-30 | 2002-12-06 | Sony Corp | Sar低減装置および無線通信装置 |
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