JP2009188714A - Mobile phone equipment - Google Patents

Abstract

To provide a mobile phone device capable of supporting a plurality of frequency bands by providing a plurality of antennas while realizing a thin shape.
A cellular phone device according to the present invention includes a first casing, a second casing, and a hinge that rotatably connects the first casing and the second casing. Part 3, the first antenna 7 provided at the end of the longitudinal direction on the opposite side of the hinge part 3 side and provided at the end of the short side in the first housing 1, and the hinge part 3 side is opposite The second antenna 8 provided at the end in the short direction opposite to the first antenna 7 in the first housing 1 is opposite to the hinge 3 side. A receiver 4 and an infrared device 5 provided in the first casing 1, and a third antenna 13 provided in the second housing 2. The first antenna 7 and the second antenna 8 are arranged at positions that do not overlap with the receiver 4 and the infrared device 5 when viewed from the back and front end surfaces of the first housing 1. It is those that you have configured.
[Selection] Figure 2

Description

  The present invention relates to a mobile phone device, and more particularly to a mobile phone device that performs communication in a state in which a casing is opened from a folded state.

2. Description of the Related Art Conventionally, in a mobile phone device that can be folded in two, a telephone main antenna and a GPS antenna are arranged on different substrates (for example, Patent Document 1). According to Patent Document 1, there is little coupling deterioration because the distance between the main antenna for calling and the GPS antenna is large, and since the GPS antenna is configured at the tip of the upper housing, it is not easily affected by the hand and is handheld. Is known to have good antenna characteristics.
JP 2002-314313 A

  However, in recent years, various functions are increasing in mobile phone devices, and the number of antennas used is increasing accordingly. Furthermore, in recent mobile phone devices, there is a growing demand for downsizing and thinning by users of mobile phone devices. Therefore, when another antenna is added in the vicinity of the antenna described in Patent Document 1, there is a problem that the distance between the antenna and the peripheral metal part is small and the antenna characteristics are deteriorated. Further, if the antenna characteristics are simply increased by separating the antenna from the peripheral metal parts, there is a problem that the cellular phone device becomes large and the thickness increases.

  The present invention has been made to solve the conventional problems, and prevents deterioration of antenna characteristics while minimizing the influence on the size of the mobile phone device by mounting a plurality of antennas on the mobile phone device. An object of the present invention is to provide a mobile phone device that can be used.

  In order to solve the above problems, a mobile phone device of the present invention rotatably connects a first housing, a second housing, and the first housing and the second housing. A hinge portion, a first antenna provided at a longitudinal end portion on the opposite side of the hinge portion side, provided at a short-side end portion in the first housing, and a side opposite to the hinge portion side The second antenna provided at the end in the short-side direction on the opposite side to the first antenna in the first casing, and the length on the opposite side from the hinge part side An electronic component provided at the end of the direction and provided in the first housing, and a third antenna provided in the second housing, wherein the first antenna and the second antenna The antenna is configured to be disposed at a position that does not overlap the electronic component when viewed from the back and front end surfaces of the first housing. It is.

  With this configuration, it is possible to prevent the antenna element and the electronic component from coming close to each other and to prevent the antenna characteristics from deteriorating.

  In addition to the above-described configuration, the cellular phone device of the present invention includes a circuit board provided in a first housing, a connection portion that connects the electronic component and the circuit board, a first antenna, and the first antenna. And a protrusion provided between the second antenna and the connecting portion.

  With this configuration, the distance between the antenna element and the electronic component can always be kept constant, the proximity between the antenna element and the electronic component can be prevented, and deterioration of the antenna characteristics can be prevented.

  In addition to the above configuration, the mobile phone device of the present invention is arranged such that the distance between the first antenna and the second antenna and the electronic component is a distance of 1/100 wavelength or more with respect to the use frequency. It is comprised so that.

  With this configuration, the distance between the antenna element and the electronic component becomes a distance that does not affect the decrease in the antenna impedance, and the antenna characteristics can be prevented from deteriorating.

  In addition to the above configuration, the mobile phone device of the present invention is configured such that the first antenna or the second antenna has at least a part of the frequency band of the third antenna in the operating frequency band. .

  With this configuration, it is possible to prevent the deterioration of the mutual antenna characteristics by reducing the coupling deterioration of the mutual antennas due to the distance between the antennas having close operating frequency bands.

  According to the present invention, it is possible to prevent deterioration of each antenna characteristic caused by configuring a plurality of antennas in the mobile phone device, and thus it is possible to realize a user-friendly mobile phone device.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is an external view of a portable radio apparatus 100 according to an embodiment of the present invention. 1A is a view of the mobile wireless device 100 as viewed from the front, FIG. 1B is a view of the mobile wireless device 100 as viewed from the back, and FIG. 1C is a view of FIG. It is the figure which looked at the portable radio | wireless apparatus 100 from the arrow direction in A).

  The portable wireless device 100 has two housings, a first housing 1 that is an upper housing and a second housing 2 that is a lower housing. The hinge unit 3 rotatably connects the first housing 1 and the second housing 2.

  As shown in FIG. 1A, the mobile phone device 100 includes a liquid crystal display unit, an operation unit, and the like, and the first housing 1 further includes a receiver 4. Further, as shown in FIG. 1C, an infrared communication device 5 for communicating with a mobile phone device other than the mobile phone device 100 is provided on the upper end surface.

  The receiver 4 must be configured at the upper end of the first casing 1 (the longitudinal end of the first casing 1) in order to receive the voice of the other party. In addition, the infrared communication device 5 is arranged at the upper end portion of the first casing 1 in the same manner as the receiver 4 in consideration of convenience when communicating with other mobile phone devices. In this manner, specific electronic components such as the receiver 4 and the infrared communication device 5 are always arranged at the upper end of the first casing 1.

FIG. 2 is a diagram showing an internal structure of the mobile phone device 100 as viewed from the side of FIG. FIG. 3 is an enlarged view of the upper end portion (the end portion in the longitudinal direction of the first housing 1) of the first housing 1 in FIG.
FIG. 4 is a diagram showing the internal structure of the mobile phone device 100 as viewed from the arrow side (1) in FIG. 3 (viewed from the side of FIG. 1C). 5 is a diagram showing the internal structure of the mobile terminal 100 as viewed from the directions of arrows (2) and (3) in FIG. 3, and FIG. FIG. 5B is a diagram showing an internal structure viewed from the direction of arrow (3) in FIG. 3.

The first housing 1 has a first circuit board 6, a first antenna 7, and a second antenna 8 inside. The first antenna 7 and the second antenna 8 are disposed at the tip of the first circuit board 6 on the opposite side to the hinge portion 3 (the longitudinal end of the first housing 1). As shown in FIGS. 2 and 3, the first antenna 7 and the second antenna 8 are respectively disposed at the lateral ends of the first housing 1. The first antenna 7 is electrically connected to the power feeding unit 9 and the radio circuit 10, and the second antenna 8 is electrically connected to the power feeding unit 11 and the radio circuit 10.
The second housing 2 has a second circuit board 12 inside and a third antenna 13 which is a main antenna for telephone call inside. A circuit pattern is formed on the circuit board 12 on a flat surface, and the power feeding unit 14 and the third antenna 13 on the circuit pattern are electrically connected.

  The first circuit board 6 included in the first casing 1 and the second circuit board 12 included in the second casing 2 are electrically connected via a coaxial cable 15 passing through the hinge portion 3. .

  The first antenna 7 is a diversity reception sub-antenna, and is configured to have the same frequency band as the third antenna 13 that is a main antenna for telephone call. Since the power feeding unit 9 of the first antenna 7 which is a sub antenna and the power feeding unit 14 of the third antenna 13 which is a main antenna for communication are configured on different circuit boards, the power feeding unit 9 and the power feeding unit 14 It is possible to easily reduce the mutual coupling deterioration that occurs between them.

  In addition, the second antenna 8 configured at the end in the short direction opposite to the first antenna 7 is an antenna having a frequency band different from that of the first antenna 7 and the third antenna 13 such as a GPS antenna. To. With this configuration, since the second antenna 8 has a narrow band, the coupling deterioration between the first antenna 7 and the second antenna 8 can be reduced.

  The receiver 4 is electrically connected to the circuit board 6 via the cable 16. On the circuit board 6, a connector portion 17 connected to the cable 16 is disposed. Here, when the tip portion having the largest voltage distribution of the second antenna 8 is close to the receiver 4 or the cable 16, the voltage is lowered by the voltage drop, the impedance is lowered, the radiation is prevented, and the antenna characteristics are deteriorated. Therefore, by separating the distance between the second antenna 8 and the receiver 4 and the cable 16 by 1/100 wavelength or more with respect to the use frequency, the influence of the receiver 4 and the cable 16 can be removed, and the antenna characteristics are deteriorated. Can be prevented.

  Further, in order to keep the distance between the second antenna 8 and the receiver 4 and the cable 16 at 1/100 wavelength or more with respect to the use frequency, the protrusion 18 is provided. The protrusion 18 is made of a resin material that does not affect the antenna characteristics.

  Further, the connector part 17 is configured at the end on the circuit board 6, and the power feeding part 11 of the second antenna 8 is configured to be separated from the connector part 17 in the longitudinal direction of the circuit board 6 by 1/100 wavelength or more with respect to the use frequency. is doing. By increasing the element length of the second antenna 8 in the longitudinal direction of the circuit board 6 with this configuration, the antenna characteristics are improved.

  The infrared device 5 is electrically connected to the circuit board 6 via the flexible wiring board 19. On the circuit board 6, a connector part 20 connected to the flexible wiring board 19 is arranged. The flexible wiring board 19 is arranged so as to be folded and overlapped.

  The first antenna 7 is configured by bending the antenna element to the inside of the first housing 1 in order to separate the tip from the infrared device 5. This is because, when the first antenna 7 is extended along the tip of the first housing 1, the tip of the antenna having the largest voltage distribution approaches the infrared device 5 that is a metal part, so that the impedance is reduced by the voltage drop. This is because the antenna characteristic is deteriorated due to a decrease in radiation.

  The first antenna 7 and the infrared device 5 can prevent deterioration of antenna characteristics by separating them by 1/100 wavelength or more with respect to the used frequency.

  Furthermore, in order to always keep the distance between the first antenna 7 and the flexible wiring board 19 to 1/100 wavelength or more with respect to the operating frequency, a protrusion 21 made of a resin material that does not affect the antenna characteristics is provided. Up to now, the flexible wiring board 19 has been bent and overlapped, so that it has moved up and down and the distance between the first antenna 7 and the flexible wiring board 19 has changed. 21 can solve this problem.

  As described above, the electronic component is configured at the upper end of the upper casing of the mobile phone device 100 (the end of the first housing 1), so that the space in which the antenna can be configured is limited. By arranging the first antenna 7 and the second antenna 8 at positions where they do not overlap with the electronic components such as the receiver 4 and the infrared device 5 when viewed from the back surface and the front end surface of the first housing 1, the space can be saved. An optimal antenna shape can be configured, and the antenna is not affected by electronic components, and deterioration of antenna characteristics can be prevented. Further, according to the present embodiment, it is possible to efficiently arrange a plurality of receiving antennas having different frequency bands in a space-saving manner.

  Note that the antenna provided in the mobile phone device according to the present invention is not limited to a receiving antenna, but a local average SAR (Specific Absorption Rates: ratio) of electromagnetic waves absorbed by the human body such as a short-range wireless system such as Bluetooth or a wireless LAN. A transmission / reception antenna with low transmission power that does not affect the absorption rate may be used.

  It should be noted that the present invention is not limited to those shown in the above-described embodiments, and those skilled in the art can also make changes and applications based on the description in the specification and well-known techniques. Yes, included in the scope of protection.

  The present invention can be used not only for a mobile phone but also for an electronic device having a plurality of antennas in a folded shape. For example, a game machine, an electronic dictionary, a notebook computer, a PDA, etc. can be considered.

External view of mobile phone device of the present invention Inside view of the cellular phone device of the present invention The enlarged view of the front-end | tip part of the 1st housing | casing of the mobile telephone apparatus of this invention The internal view seen from the front end side of the 1st housing | casing of the mobile telephone apparatus of this invention The internal view seen from the transversal direction edge part side of the mobile telephone apparatus of this invention

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 Cellular phone apparatus 1 1st housing | casing 2 2nd housing | casing 3 Hinge part 4 Receiver 5 Infrared device 6 1st circuit board 7 1st antenna 8 2nd antenna 9 Feeding part 10 Radio | wireless part 11 Feeding part 12 Second circuit board 13 Third antenna 14 Feeding portion 15 Coaxial cable 16 Cable 17 Connector 18 Protrusion 19 Flexible substrate 20 Connector 21 Protrusion

Claims (4)

A first housing;
A second housing;
A hinge portion rotatably connecting the first housing and the second housing;
A first antenna provided at a longitudinal direction end opposite to the hinge part side, and provided at a short direction end in the first housing;
A second antenna provided at a longitudinal direction end opposite to the hinge part side, and provided at a short direction end opposite to the first antenna in the first housing;
An electronic component provided in the longitudinal direction end opposite to the hinge part side and provided in the first housing;
A third antenna provided in the second housing,
The mobile phone device, wherein the first antenna and the second antenna are arranged at positions that do not overlap the electronic component when viewed from a back surface and a front end surface of the first housing. The mobile phone device according to claim 1,
A circuit board provided in the first housing;
A connecting portion for connecting the electronic component and the circuit board;
A mobile phone device comprising: the first antenna; the second antenna; and a protrusion provided between the connection portion. The mobile phone device according to claim 1 or 2, wherein
The cellular phone device, wherein the first antenna and the second antenna are arranged at a distance of 1/100 wavelength or more with respect to a use frequency. The mobile phone device according to any one of claims 1 to 3,
The cellular phone device, wherein the first antenna or the second antenna has at least a part of a frequency band of the third antenna in an operating frequency band.

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