JP2008011016A - Mobile wireless apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a mobile wireless apparatus, capable of preventing interference between built-in antennas while maintaining a small size and a low profile, even when the plural built-in antennas are provided and prevent deterioration in the antenna gain by reducing the effects from human bodies. <P>SOLUTION: The mobile wireless apparatus includes a casing 1 with a first side 21, provided with an LCD 15 and/or a key operation section 16 and a second side 22 facing the first side 21; and a plurality of antennas provided inside the casing 1 and arranged along the second side 22; and the antennas include the first and second built-in antennas 8, 11, respectively arranged along one of the facing sides of the second side 22 and the other. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a portable wireless device incorporating a plurality of antennas.

  In recent years, portable wireless devices such as mobile phones are used not only for calls but also for mail, Internet connection, Global Positioning System (hereinafter referred to as GPS), digital television (hereinafter referred to as DTV) and the like. In addition, with the improvement of call quality, communication speed, and increase in information volume, the frequency band used in one usage is expanding. Because it is necessary to use a plurality of frequency bands in a wide range, for example, a plurality of antennas are provided, such as a call antenna for calls and an antenna for mail. The correspondence to use is necessary. On the other hand, downsizing and thinning of the housing is indispensable for the convenience of portable wireless devices that are stored in and possessed in pockets or bags.

  In such a portable radio device, development relating to prevention of antenna gain degradation is underway. In Patent Document 1, in a two-fold type portable wireless device, a built-in antenna is provided at one end of the lower housing and shielded by the upper housing, thereby keeping the built-in antenna away from the human head. Thus, the antenna gain is prevented from deteriorating by reducing the influence of the built-in antenna from the human head.

JP 2004-166284 A

  When the number of antennas is increased in order to use a plurality of frequency bands as described above, interference between antennas increases. However, if the distance between the antennas is increased randomly in order to prevent the interference, there is a problem that the portable wireless device becomes larger and thicker. Further, even when a plurality of built-in antennas are provided, it is necessary to reduce the influence of the built-in antenna from the human body.

  The present invention has been made to solve the above-described problems, and even when a plurality of built-in antennas are provided, interference between the built-in antennas can be prevented while maintaining a small size and a thin shape. Further, it is an object to obtain a portable wireless device that can prevent deterioration of antenna gain by reducing the influence from the human body.

  The portable wireless device according to the present invention includes a housing having a first surface provided with a display unit and / or a key operation unit, and a second surface facing the first surface, and the housing. A plurality of antennas disposed along the second surface, wherein the plurality of antennas are respectively disposed along one side and the other side of the second surface facing each other. Includes first and second antennas.

  According to the portable wireless device of the present invention, even when a plurality of antennas are provided inside, interference between antennas can be prevented while maintaining a small size and a thin shape, and the influence from the human body is further reduced. Thus, deterioration of the antenna gain can be prevented.

<Embodiment 1>
FIG. 1 is a conceptual diagram of the portable wireless device according to the present embodiment, and FIG. 2 is a side view when the portable wireless device is used. As shown in the figure, the housing 1, the battery 2, the plurality of substrates 3, 4, 5, the first, second and third MC circuits 6, 9, 12 and the first and first feeding pins are shown. Second and third power supply pins 7, 10, 13, a plurality of antennas 8, 11, 14, a liquid crystal display (hereinafter referred to as LCD) 15 as a display unit, and a key operation unit 16 are provided.

  As shown in FIG. 2, the housing 1 includes an LCD 15, a first surface 21 on which the key operation unit 16 is provided, and a second surface 22 that faces the first surface 21. FIG. 1 is a diagram showing a portable wireless device with the second surface 22 facing upward. As shown in this figure, the plurality of antennas 8, 11, 14 are provided in the housing 1 and are arranged along the second surface 22 of the housing 1. The plurality of antennas include a first built-in antenna 8 that is a first antenna, a second built-in antenna 11 that is a second antenna, and a third built-in antenna 14 that is a third antenna. Here, all of the first built-in antenna 8, the second built-in antenna 11, and the third built-in antenna 14 are linear monopole antennas.

  The first and second built-in antennas 8 and 11 are arranged along one and the other of the opposite sides of the second surface 22 facing each other. The first and second built-in antennas 8 and 11 are arranged at the same position on the upper side of one of the opposite sides and the other casing 1. Here, the upper side means a portion located on the upper side in the case 1 when the case 1 is used. Specifically, as shown in FIG. 1, the first built-in antenna 8 is arranged on the upper left side of the second surface 22, and the second built-in antenna 11 is arranged on the upper right side of the second surface 22. It is symmetrical. The first and second built-in antennas are configured by a flexible printed circuit (hereinafter referred to as “FPC”), and are attached to the second surface 22.

  The third built-in antenna 14 is made of sheet metal and is disposed along a side other than the opposite side of the second surface 22. Here, the side on which the third built-in antenna 14 is arranged is the upper side of the housing 1. The first and second built-in antennas 8 and 11 are used for communication at a higher frequency than the third built-in antenna 14.

  The first substrate 3, the second substrate 4, and the third substrate 5 that constitute a plurality of substrates are second to first in the direction perpendicular to the first and second surfaces 21 and 22. The layers are arranged in order toward the surface 22. The first substrate 3 is composed of a circuit including a wireless unit. The second substrate 4 is composed of a circuit including a wireless unit that cannot be mounted on the first substrate 3. The third substrate 5 is configured by a circuit including a wireless unit that cannot be mounted on the first substrate 4 and the second substrate 4.

  The first power supply pin 7 is provided on the third substrate 5 and is electrically (DC) connected to the first internal antenna 8 to supply power to the first internal antenna 8. The first MC circuit 6 performs MC adjustment for matching the impedances of the first built-in antenna 8 and the first feed pin 7. The first built-in antenna 8 is connected to a feed pin provided on a substrate other than the first substrate 3 which is the substrate closest to the first surface 21 among the plurality of substrates 3, 4, 5. In the present embodiment, as the most desirable structure, the first built-in antenna 8 is provided on the third substrate 5 that is the substrate farthest from the first surface 21 among the plurality of substrates 3, 4, 5. 1 power supply pin 7.

  The second power supply pin 10 is provided on the third substrate 5 and is electrically (DC) connected to the second internal antenna 11 to supply power to the second internal antenna 11. The second MC circuit 9 performs MC adjustment for matching the impedances of the second built-in antenna 11 and the second feed pin 10. The second built-in antenna 11 is connected to a feed pin provided on a substrate other than the first substrate 3 which is the substrate closest to the first surface 21 among the plurality of substrates 3, 4, 5. In the present embodiment, as the most desirable structure, the second built-in antenna 11 is provided on the third substrate 5 which is the substrate farthest from the first surface 21 among the plurality of substrates 3, 4, 5. 2 power supply pins 10 are connected.

  The third power supply pin 13 is provided on the first substrate 3 and is electrically (DC) connected to the third internal antenna 14 to supply power to the third internal antenna 14. The third MC circuit 12 performs MC adjustment for matching the impedances of the third built-in antenna 14 and the third feed pin 13. The third built-in antenna 14 is connected to a third feed pin 13 provided on the first substrate 3, which is the substrate closest to the first surface 21 among the plurality of substrates 3, 4, and 5.

  With this configuration, the first built-in antenna 8 and the second built-in antenna 11 are separated from each other as long as the portable wireless device can be downsized. Therefore, the influence which the 1st built-in antenna 8 receives from the 2nd built-in antenna 11 and the influence which the 2nd built-in antenna 11 receives from the 1st built-in antenna 8 can be reduced.

  Further, since the first, second, and third built-in antennas 8, 11, and 14 are arranged along the second surface 22, when a person uses the portable radio as shown in FIG. As long as they can be made thinner, they are located farthest from the human head 17. Therefore, the influence from the human head 17 can be reduced, and deterioration of the antenna gain in each of these built-in antennas can be prevented.

  In general, the portable wireless device is used with the lower side of the housing 1 held by a human hand. Therefore, by providing the first and second built-in antennas 8 and 11 on the upper side of the housing 1, the influence from human hands can be reduced, and the first and second built-in antennas 8 and 11 can be reduced. It is possible to further prevent deterioration of the antenna gain in each. Similarly, by providing the third built-in antenna 14 along the upper side of the housing 1, it is possible to reduce the influence of human hands and to reduce the antenna gain in the third built-in antenna 14. Further, it can be prevented.

  The first and second built-in antennas 8 and 11 that communicate at a frequency that is easily affected by the human body, that is, a relatively high frequency, are provided on a substrate other than the first substrate 3 that is closest to the human head 17. Power is supplied from the supplied power supply pin. That is, power is supplied at a position not close to the human head 17. For this reason, in addition to the effects of the arrangement of the plurality of built-in antennas, the influence from the human head 17 can be further prevented, and the antenna gains of the first and second built-in antennas 8 and 11 are deteriorated. Can be further prevented.

  In the present embodiment, the first and second built-in antennas 8 and 11 are further provided from the first and second power supply pins 7 and 10 provided on the third substrate 5 farthest from the human head 17. Each is powered. That is, power is supplied at a position farthest from the human head 17. For this reason, the influence from the human head 17 can be prevented most, and the deterioration of the antenna gain in each of the first and second built-in antennas 8 and 11 can be most prevented.

  In the present embodiment, the third built-in antenna 14 is connected to the feed pin 13 on the first board 3 that is closest to the human head 17. This is based on the assumption that the design space of each of the second substrate 4 and the third substrate 5 has no margin and is not provided on the second substrate 4 or the third substrate 5. Here, since communication at a relatively low frequency is relatively less affected by the human head 17, the third built-in antenna 14 among the plurality of antennas 8, 11, 14 is connected to the first substrate. 4 connected. However, as shown in the following embodiment, if the second substrate 4 or the third substrate 5 can be provided, the third built-in antenna 14 is also connected to these substrates, It is better to prevent deterioration of the antenna gain in the third built-in antenna 14.

  Further, the first built-in antenna 8, the second built-in antenna 11 and the third built-in antenna 14 are shown as linear monopole antennas, but at least one of them is a plate-shaped monopole antenna. Also good.

  The first and second built-in antennas 8 and 11 are made of FPC, and the third built-in antenna 14 is made of sheet metal. However, these antennas may be made of sheet metal or FPC.

  Although the third built-in antenna 14 is made of sheet metal, a dielectric is provided above the second surface 22, an antenna element is provided on the dielectric, and the third feed pin 13 electrically (DC) electrically You may substitute what was connected.

  In addition, the circuit of the wireless unit is mounted on each of the first substrate 3, the second substrate 4, and the third substrate 5, but the circuit of the wireless unit is mounted on at least one, and the circuit for application is applied to the remaining substrate. For example, a camera, an SD card, GPS, radio, DTV, etc. may be mounted. The first, second, and third power supply pins 7, 10, and 13 can be configured by any of a leaf spring, a sheet metal, a conductive sponge, and a gasket.

  Although the portable wireless device is shown as a straight type, the LCD 15 is provided on one of the two housings, and the battery 2 is provided on the other side, and the two-folded portable wireless device in which the LCD 15 and the battery 2 are separated. A slide-type portable wireless device may be used.

<Embodiment 2>
FIG. 3 shows a conceptual diagram of the portable wireless device according to this embodiment, and FIG. 4 shows a side view when the portable wireless device is used. The present embodiment is different from the first embodiment in that the arrangement positions of the third MC circuit 12, the third power feed pin 13, and the third built-in antenna 14 are different. In the present embodiment, configurations not newly described below are the same as those in the first embodiment.

  As shown in FIG. 4, the housing 1 includes an LCD 15, a first surface 21 on which the key operation unit 16 is provided, and a second surface 22 that faces the first surface 21. FIG. 3 is a diagram showing the portable wireless device with the second surface 22 facing upward. As shown in this figure, the plurality of antennas 8, 11, 14 are provided in the housing 1 and are arranged along the second surface 22 of the housing 1. The plurality of antennas include a first built-in antenna 8 that is a first antenna, a second built-in antenna 11 that is a second antenna, and a third built-in antenna 14 that is a third antenna. Here, all of the first built-in antenna 8, the second built-in antenna 11, and the third built-in antenna 14 are linear monopole antennas.

  The first and second built-in antennas 8 and 11 are arranged along one and the other of the opposite sides of the second surface 22 facing each other. The first and second built-in antennas 8 and 11 are arranged at the same position on the upper side of one of the opposite sides and the other casing 1. Specifically, as shown in FIG. 3, the first built-in antenna 8 is disposed on the upper left side of the second surface 22, and the second built-in antenna 11 is disposed on the upper right side of the second surface 22. It is symmetrical. The third built-in antenna 14 is disposed between the first built-in antenna 8 and the second built-in antenna 11. The first, second, and third built-in antennas 8, 11, and 14 are configured by FPC, and are attached to the second surface 22.

  The third power supply pin 13 is provided on the third substrate 5 and is electrically (DC) connected to the third internal antenna 14 to supply power to the third internal antenna 14. The third MC circuit 12 performs MC adjustment for matching impedance between the third built-in antenna 14 and the third power feed pin 13. The third built-in antenna 14 is connected to a power supply pin provided on a substrate other than the first substrate 3 that is the substrate closest to the first surface 21 among the plurality of substrates 3, 4, and 5. In the present embodiment, as the most desirable structure, the third built-in antenna 14 is provided on the third substrate 5 that is the substrate farthest from the first surface 21 among the plurality of substrates 3, 4, and 5. 3 power supply pins 13.

  The configurations of the first and second built-in antennas 8 and 11, the first and second power feed pins 7 and 10, and the first and second MC circuits 6 and 9 are the same as those in the first embodiment. Thus, all of the first, second and third antennas 8, 11 and 14 are provided on the third substrate 5 which is the substrate farthest from the first surface 21 among the plurality of substrates 3, 4 and 5. The first, second and third power supply pins 7, 10 and 13 are connected respectively.

  With this configuration, the first built-in antenna 8 and the second built-in antenna 11 are separated from each other as long as the portable wireless device can be downsized. Therefore, the influence which the 1st built-in antenna 8 receives from the 2nd built-in antenna 11 and the influence which the 2nd built-in antenna 11 receives from the 1st built-in antenna 8 can be reduced.

  Further, since the first, second, and third built-in antennas 8, 11, and 14 are arranged along the second surface 22, when a person uses the portable radio as shown in FIG. As long as they can be made thinner, they are located farthest from the human head 17. Therefore, the influence from the human head 17 can be reduced, and deterioration of the antenna gain in each of these built-in antennas can be prevented.

  The first, second, and third built-in antennas 8, 11, and 14 are fed from feeding pins provided on a board other than the first board 3 closest to the human head 17. That is, power is supplied at a position not close to the human head 17. For this reason, in addition to the effects of the arrangement of the plurality of built-in antennas, the influence from the human head 17 can be further prevented, and the deterioration of the antenna gain in each of these built-in antennas can be further prevented.

  In the present embodiment, the first, second and third built-in antennas 8, 11 and 14 are all first, second and third provided on the third substrate 5 farthest from the human head 17. Power is supplied from the third power supply pins 7, 10, and 13, respectively. That is, power is supplied at a position farthest from the human head 17. For this reason, the influence from the human head 17 can be prevented most, and the deterioration of the antenna gain in each of these built-in antennas can be most prevented. As a result, the most stable antenna gain can be obtained.

  In the present embodiment, the third built-in antenna 14 is also arranged on the upper side of the housing 1 because it is greatly affected by human hands. However, the third built-in antenna 14 may be provided on the lower side of the housing 1 when the influence between these built-in antennas is greater than the effect received by human hands.

  Further, the first built-in antenna 8, the second built-in antenna 11 and the third built-in antenna 14 are shown as linear monopole antennas, but at least one of them is a plate-shaped monopole antenna. Also good. The first, second, and third built-in antennas 8, 11, and 14 are all made of FPC, but at least one of them may be a sheet metal.

<Embodiment 3>
FIG. 5 shows a conceptual diagram of the portable wireless device according to this embodiment, and FIG. 6 shows a side view when the portable wireless device is used. The difference between the present embodiment and the second embodiment is that the arrangement positions of the third MC circuit 12, the third power feed pin 13, and the third built-in antenna 14 are different, and the fourth MC circuit 18. And a fourth feed pin 19 and a fourth built-in antenna 20. In the present embodiment, configurations not newly described below are the same as those in the second embodiment.

  As shown in FIG. 6, the housing 1 has an LCD 15, a first surface 21 on which the key operation unit 16 is provided, and a second surface 22 that faces the first surface 21. FIG. 5 is a diagram showing the portable wireless device with the second surface 22 facing upward. As shown in this figure, the plurality of antennas 8, 11, 14, and 20 are provided in the housing 1 and are disposed along the second surface 22 of the housing 1. The plurality of antennas include a first built-in antenna 8 that is a first antenna, a second built-in antenna 11 that is a second antenna, a third built-in antenna 14 that is a third antenna, and a fourth antenna. A fourth built-in antenna 20 that is the first antenna. Here, the first built-in antenna 8, the second built-in antenna 11, the third built-in antenna 14, and the fourth built-in antenna 20 are all linear monopole antennas.

  The first and second built-in antennas 8 and 11 are arranged along one and the other of the opposite sides of the second surface 22 facing each other. The first and second built-in antennas 8 and 11 are arranged at the same position on the upper side of one of the opposite sides and the other casing 1. Specifically, as shown in FIG. 5, the first built-in antenna 8 is disposed on the upper left side of the second surface 22, and the second built-in antenna 11 is disposed on the upper right side of the second surface 22. It is symmetrical.

  Unlike the second embodiment, the third built-in antenna 14 is arranged along the same opposite side as the first built-in antenna 8. The fourth built-in antenna 20 is disposed along the same opposite side as the second built-in antenna 11. The third and fourth built-in antennas 14 and 20 are arranged at the same position on the lower side of the housing 1 on the opposite side. Specifically, as shown in FIG. 5, the third internal antenna 14 is disposed on the lower left side of the second surface 22, and the fourth internal antenna 20 is disposed on the lower right side of the second surface 22. Is symmetrical. The first, second, third, and fourth built-in antennas 8, 11, 14, and 20 are configured by FPC, and are disposed by being attached to the second surface 22.

  The fourth power supply pin 19 is provided on the third substrate 5 and is electrically (DC) connected to the fourth internal antenna 20 to supply power to the fourth internal antenna 20. The fourth MC circuit 18 performs MC adjustment for matching the impedances of the fourth built-in antenna 20 and the fourth feed pin 19. The fourth built-in antenna 20 is connected to a feed pin provided on a substrate other than the first substrate 3 that is the substrate closest to the first surface 21 among the plurality of substrates 3, 4, and 5. In the present embodiment, as the most desirable structure, the fourth built-in antenna 20 is provided on the third substrate 5 that is the substrate farthest from the first surface 21 among the plurality of substrates 3, 4, 5. 4 power supply pins 19.

  The configurations of the first and second built-in antennas 8 and 11, the first and second power supply pins 7 and 10, and the first and second MC circuits 6 and 9 are the same as those in the second embodiment. The third feed pin 13 and the third MC circuit 12 are provided on the third substrate 5 as in the second embodiment, but the third feed pin 13 and the third MC circuit 12 are changed according to the change in the arrangement position of the third built-in antenna 14. The position on the substrate 5 is changed. Thus, the first, second, third, and fourth antennas 8, 11, 14, and 20 are all third substrates that are the farthest from the first surface 21 among the plurality of substrates 3, 4, and 5. 5 are connected to first, second, third, and fourth power supply pins 7, 10, 13, and 19, respectively.

  With this configuration, the first, second, third, and fourth built-in antennas 8, 11, 14, and 20 are separated from each other as long as the portable wireless device can be miniaturized. Therefore, it is possible to reduce the mutual influence between one built-in antenna and all other built-in antennas.

  In addition, since the first, second, third, and fourth built-in antennas 8, 11, 14, and 20 are arranged along the second surface 22, a person uses a portable radio as shown in FIG. In some cases, as long as the portable wireless devices can be thinned, they are located at a position farthest from the human head 17. Therefore, the influence from the human head 17 can be reduced, and deterioration of the antenna gain in each of these built-in antennas can be prevented.

  The first, second, third, and fourth built-in antennas 8, 11, 14, and 20 are fed from feeding pins provided on a board other than the first board 3 closest to the human head 17. The That is, power is supplied at a position not close to the human head 17. For this reason, in addition to the effects of the arrangement of the plurality of built-in antennas, the influence from the human head 17 can be further prevented, and the deterioration of the antenna gain in each of these built-in antennas can be further prevented.

  In the present embodiment, the first, second, third, and fourth built-in antennas 8, 11, 14, and 20 are all provided on the third substrate 5 that is farthest from the human head 17. Power is supplied from the first, second, third, and fourth power supply pins 7, 10, 13, and 19, respectively. That is, power is supplied at a position farthest from the human head 17. For this reason, the influence from the human head 17 can be prevented most, and the deterioration of the antenna gain in each of these built-in antennas can be most prevented. As a result, the most stable antenna gain can be obtained.

  The first, second, third, and fourth built-in antennas 8, 11, 14, and 20 are all shown as linear monopole antennas, but at least one of them is a plate-like monopole. It may be an antenna.

  The first, second, third, and fourth built-in antennas 8, 11, 14, and 20 are all configured by FPC, but at least one of them may be a sheet metal. The first, second, third, and fourth power supply pins 7, 10, 13, and 19 can be formed of any one of a leaf spring, a sheet metal, a conductive sponge, and a gasket.

<Embodiment 4>
FIG. 7 is a conceptual diagram of the portable wireless device according to this embodiment, and FIG. 8 is a side view when the portable wireless device is used. In the present embodiment, it is assumed that the design space of the third substrate 5 has no margin and the power supply pins are provided on the second substrate 4. The plurality of substrates 3, 4, and 5 are assumed to be the same as the configuration of the second embodiment.

  As shown in FIG. 7, the housing 1 includes an LCD 15, a first surface 21 on which the key operation unit 16 is provided, and a second surface 22 that faces the first surface 21. FIG. 7 is a diagram showing the portable wireless device with the second surface 22 facing upward. As shown in this figure, the plurality of antennas 8 and 11 are provided in the housing 1 and are disposed along the second surface 22 of the housing 1. The plurality of antennas include a first built-in antenna 8 that is a first antenna and a second built-in antenna 11 that is a second antenna. Here, the first built-in antenna 8 and the second built-in antenna 11 are all linear monopole antennas.

  The first and second built-in antennas 8 and 11 are arranged along one and the other of the opposite sides of the second surface 22 facing each other. The first and second built-in antennas 8 and 11 are arranged at the same position on the upper side of one of the opposite sides and the other casing 1. Specifically, as shown in FIG. 7, the first built-in antenna 8 is arranged on the upper left side of the second surface 22, and the second built-in antenna 11 is arranged on the upper right side of the second surface 22. It is symmetrical. The first and second built-in antennas 8 and 11 are configured by FPC and are disposed on the second surface 22 while being attached.

  The first power supply pin 7 is provided on the second substrate 4 and is electrically (DC) connected to the first built-in antenna 8 to supply power to the first built-in antenna 8. The first MC circuit 6 performs MC adjustment for matching the impedances of the first built-in antenna 8 and the first feed pin 7. The first built-in antenna 8 is connected to a feed pin provided on a substrate other than the first substrate 3 which is the substrate closest to the first surface 21 among the plurality of substrates 3, 4, 5. In the present embodiment, the first built-in antenna 8 is connected to the first power feed pin 7 provided on the second substrate 4 among the plurality of substrates 3, 4, 5.

  The second power supply pin 10 is provided on the second substrate 4 and is electrically (DC) connected to the second internal antenna 11 to supply power to the second internal antenna 11. The second MC circuit 9 performs MC adjustment for matching the impedances of the second built-in antenna 11 and the second feed pin 10. The second built-in antenna 11 is connected to a feed pin provided on a substrate other than the first substrate 3 which is the substrate closest to the first surface 21 among the plurality of substrates 3, 4, 5. In the present embodiment, the second built-in antenna 11 is connected to the second power supply pin 10 provided on the second substrate 4 among the plurality of substrates 3, 4, 5.

  With this configuration, the first built-in antenna 8 and the second built-in antenna 11 are separated from each other as long as the portable wireless device can be downsized. Therefore, the influence which the 1st built-in antenna 8 receives from the 2nd built-in antenna 11 and the influence which the 2nd built-in antenna 11 receives from the 1st built-in antenna 8 can be reduced.

  Further, by arranging the first and second built-in antennas 8 and 11 along the second surface 22, when a person uses the portable radio as shown in FIG. 8, the portable radio is thinned. As far as possible, they will be located farthest away from the human head 17. Therefore, the influence from the human head 17 can be reduced, and deterioration of the antenna gain in each of the first and second built-in antennas 8 and 11 can be prevented.

  The first and second built-in antennas 8 and 11 are supplied with power from power supply pins provided on a board other than the first board 3 closest to the human head 17. That is, power is supplied at a position not close to the human head 17. For this reason, in addition to the effects of the arrangement of the plurality of built-in antennas, the influence from the human head 17 can be further prevented, and the antenna gains of the first and second built-in antennas 8 and 11 are deteriorated. Can be further prevented.

  In the present embodiment, the first built-in antenna 8 and the second built-in antenna 11 are linear monopole antennas, but at least one of them may be a plate-shaped monopole antenna. Good.

  The first and second built-in antennas 8 and 11 are all made of FPC, but at least one of them may be a sheet metal. The first and second power supply pins 7 and 10 can be formed of any one of a leaf spring, a sheet metal, a conductive sponge, and a gasket.

  Although the portable wireless device is shown as a straight type, the LCD 15 is provided on one of the two housings, and the battery 2 is provided on the other side, and the two-folded portable wireless device in which the LCD 15 and the battery 2 are separated. A slide-type portable wireless device may be used.

1 is a schematic diagram of a portable wireless device according to Embodiment 1. FIG. 2 is a side view when the portable wireless device according to Embodiment 1 is used. FIG. 6 is a schematic diagram of a portable wireless device according to Embodiment 2. FIG. FIG. 10 is a side view when the portable wireless device according to the second embodiment is used. 6 is a schematic diagram of a portable wireless device according to Embodiment 3. FIG. FIG. 10 is a side view when the portable wireless device according to the third embodiment is used. 6 is a schematic diagram of a portable wireless device according to a fourth embodiment. FIG. It is a side view at the time of use of the portable wireless device which concerns on Embodiment 4. FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Case, 2 Battery, 3 1st board | substrate, 4 2nd board | substrate, 5 3rd board | substrate, 6 1st MC circuit, 7 1st electric power feeding pin, 8 1st built-in antenna, 9 2nd MC circuit 10 Second feed pin 11 Second built-in antenna 12 Third MC circuit 13 Third feed pin 14 Third built-in antenna 15 LCD 16 Key operation unit 17 Human head , 18 4th MC circuit, 19 4th feeding pin, 20 4th built-in antenna, 21 1st surface, 22 2nd surface.

Claims (11)

A housing having a first surface on which a display unit and / or a key operation unit is provided, and a second surface facing the first surface;
A plurality of antennas provided in the housing and disposed along the second surface;
The plurality of antennas are:
Including first and second antennas respectively disposed along one and the other opposite sides of the second surface.
Portable radio. The first and second antennas are arranged at the same position on the upper side of one of the opposite sides and the other casing,
The portable wireless device according to claim 1. The plurality of antennas are:
A third antenna disposed along a side of the second surface other than the opposite side;
The portable wireless device according to claim 1. The side on which the third antenna is arranged is an upper side of the housing.
The portable wireless device according to claim 3. The first and second antennas are used for communication at a higher frequency than the third antenna.
The portable wireless device according to claim 3 or 4. The plurality of antennas are:
Including a third antenna disposed between the first antenna and the second antenna;
The portable wireless device according to claim 1. The plurality of antennas are:
A third antenna disposed along the opposite side of the first antenna and a fourth antenna disposed along the opposite side of the second antenna;
The portable wireless device according to claim 1. The first and second antennas are arranged at the same position on the upper side of one of the opposite sides and the other casing,
The third and fourth antennas are arranged at the same position on one side of the opposite side and the lower side of the other casing,
The portable wireless device according to claim 7. A plurality of substrates arranged in the casing in a direction perpendicular to the first and second surfaces;
A power supply pin provided on the substrate and supplying power to the antenna;
The plurality of antennas are connected to the feed pins provided on a substrate other than the substrate closest to the first surface among the plurality of substrates.
The portable wireless device according to any one of claims 1 to 8. A housing having a first surface provided with a display unit and / or a key operation unit, and a second surface opposite to the first surface;
A plurality of antennas provided in the housing and disposed along the second surface;
A plurality of substrates arranged in the casing in a direction perpendicular to the first and second surfaces;
A power supply pin provided on the substrate and supplying power to the antenna;
The plurality of antennas are connected to the feed pins provided on a substrate other than the substrate closest to the first surface among the plurality of substrates.
Portable radio. The plurality of antennas are all connected to the feeding pins provided on the substrate farthest from the first surface among the plurality of substrates.
The portable wireless device according to claim 9 or 10.

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