JPH0733037U - Portable wireless communication device - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a smaller portable wireless communication device in which the transmission / reception characteristics of a planar antenna do not deteriorate even when used in a pocket or the like. [Structure] An antenna terminal 2c of a wireless communication device main body 2 is connected to a power feeding portion 3c of an antenna element 3 as a holding member of a portable wireless communication device 1. The vicinity of the power feeding portion 3c is covered and fixed with the dielectric 4. When the portable wireless communication device 1 is put in the pocket, the base of the antenna element 3 is fixed by the grounding part 3b and the holding part 3a at the lower end is urged, so that the holding part 3a and the main body 2 have strong pockets. The portable wireless communication device 1 is sandwiched and becomes hard to come out of the pocket. In this way, since the antenna element 3 faces the outside of the body, the transmission output from the antenna terminal is transmitted from the antenna element 3 even when it is in the pocket, and the high frequency voltage induced in the antenna element 3 is the antenna terminal. After entering, it is input to the receiver.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a portable wireless communication device.

[0002]

[Prior art]

 Conventionally, whip antennas have often been used as antennas attached to portable wireless communication devices. However, when such a portable wireless communication device is used by putting it in a chest pocket of a jacket or the like, the whip antenna is usually provided on the upper surface, which hinders the movement of the arm and the head. Therefore, a portable wireless communication device was considered in which the whip antenna was eliminated and replaced with a planar antenna, which was fixed inside the housing with a dielectric material with low radio loss. Such a built-in planar antenna is usually installed inside the back of the front where the speaker, microphone, and numeric keyboard for operation are installed. In another example, there is a mechanism in which two antennas, the whip antenna and the built-in planar antenna, are combined to perform diversity operation and reduce the influence of fading.

[0003]

[Problems to be solved by the device]

 However, as described above, when the portable wireless communication device with the built-in planar antenna is received by putting it in a chest pocket of a jacket, etc., if the back side with the antenna touches the body, the transmission / reception characteristics of the antenna will be affected. There was also a case where the call signal could not be received due to a significant drop.

Further, when the planar antenna is formed inside the housing, the distance between the planar antenna and the substrate or the housing must be kept by a dielectric material, which increases the size, which leads to miniaturization of the wireless communication device. It was an obstacle to the above.

The present invention has been proposed in view of the above problems, and the transmission / reception characteristics of a planar antenna do not deteriorate even when it is used in a chest pocket of a jacket and the like. The purpose is to provide a communication device.

[0006]

[Means for Solving the Problems]

 In order to solve the above-mentioned problems, a portable device including a wireless communication device main body, and a metal plate-shaped holding member whose upper end is fixed and whose lower end is biased toward the main body and arranged in parallel to the side surface of the main body. In the wireless communication device for mobile phone, a means for connecting the power supply unit provided near the upper end of the holding member and the antenna terminal of the main body to configure the holding member as a planar antenna was taken.

[0007]

[Action]

 When walking while receiving with the portable wireless communication device of the present invention, the user puts it in a chest pocket or the like of the jacket so as not to drop it. Furthermore, the front cloth of the pocket is sandwiched between the holding member (flat antenna) and the main body so that the portable wireless communication device does not fall out of the pocket due to the movement of the body. At this time, since the upper end of the holding member is fixed and the lower end is biased, the lower end of the holding member securely holds the pocket material together with the main body of the wireless communication device.

On the other hand, the transmission output fed from the antenna terminal of the main body of the portable wireless communication device to the power feeding unit is transmitted from the planar antenna (holding member). The same applies to reception, and the high-frequency voltage induced in the planar antenna is input to the reception unit from the power supply unit through the antenna terminal of the main body of the portable wireless communication device.

[0009]

【Example】

 The portable wireless communication device of the present invention will be described below in detail with reference to the drawings showing an embodiment. The portable wireless communication device of the present invention is large enough to fit in the chest pocket of a jacket.

First Embodiment FIG. 1 is a perspective view of the portable wireless communication device of the first embodiment when used by hand, and FIG. 2 is a state in which the portable wireless communication device of FIG. 1 is stored in a chest pocket of a jacket. FIG. 3 is an enlarged view of the vicinity of the antenna element mounted on the back surface of the portable wireless communication device of FIG. 1, FIG. 4 is a sectional view taken along the line AA of FIG. 3, and FIG. 5 is an antenna element of another embodiment. It is an enlarged sectional view of the vicinity.

In FIGS. 1 and 2, 1 is a portable wireless communication device of the first embodiment, and 2 is a main body of the portable wireless communication device 1 whose chassis is formed by aluminum die casting. Reference numeral 2a is a small liquid crystal display section that shows the frequency, signal strength, and a simple message from the communication destination. Reference numeral 3 denotes a metal antenna element that also serves as a strong elastic holding member and a plane antenna for transmitting and receiving radio waves, and is attached to the back surface of the speaker 2b when the side having the speaker 2b is the front surface. Reference numeral 3a is a holding portion formed by bending the tip of the antenna element 3 and sandwiching the cloth of the pocket with the main body 2.

3 and 4, 2c is an antenna terminal of the high-frequency part of the main body 2, 3b is a grounding part of the antenna element 3 screwed to the upper rear part of the main body 2, and 3c is fitted to the antenna terminal 2c. In addition, a feeding portion 4 for feeding a high frequency power to the antenna element 3 is a dielectric provided between the antenna element 3 and the main body 2.

In FIG. 4, the antenna element 3 is a short patch type antenna, and the radio wave fed to the feeding portion 3 c is radiated from the antenna element 3. The size of the antenna element 3 and the position of the feeding portion 3c differ depending on the frequency used, and accordingly, the size and position are determined to be appropriate. Here, the dielectric body 4 fixes the vicinity of the base portion of the antenna element 3 and the power feeding portion 3c with respect to the main body 2, protects the power feeding portion 3c from shock and deformation pressure, shortens the wavelength, and high frequency current. Are collected in this portion to prevent deterioration of radiation efficiency due to deformation of the antenna element 3.

In the portable wireless communication device 1, as shown in FIGS. 1 and 2, the display portion 2a is provided so as to be viewed from the front side with the speaker 2b. In FIG. 2, 1286. 42 is shown. Therefore, when the portable wireless communication device 1 is used while being held in the hand, and also when the user waits for a call while carrying out other work while putting it in the pocket, the side of the speaker 2b can be seen so that the display portion 2a can be seen straight. The (front) should face toward the body. In this way, the antenna element 3 necessarily faces the outside of the body. In order to prevent the portable wireless communication device 1 from slipping out of the pocket for some reason, the user holds the pocket material with the holding portion 3a of the antenna element 3. Thus, the antenna element 3 is always located in the opposite direction of the body, and the cloth of the pocket is strongly sandwiched so that the portable wireless communication device 1 does not fall.

FIG. 5 is a sectional view of another embodiment of the planar antenna as the holding member. A hook 5a made of a low dielectric constant dielectric material is attached to the tip of the antenna element 5 in order to keep the space between the antenna element 5 and the main body and to sandwich the cloth of the pocket. In the antenna of this structure, since the antenna element 5 is sufficiently separated from the main body, even if the distance between the antenna element 5 and the main body is slightly changed by sandwiching the pocket cloth, the deviation of the resonance frequency is small.

Here, the antenna element 3 and the antenna element 5 correspond to a planar antenna as a holding member.

Second Embodiment FIG. 6 is a perspective view of the portable wireless communication device of the second embodiment when used by hand, and FIG. 7 shows the portable wireless communication device of FIG. 6 stored in a chest pocket of a jacket. FIG. 6 and 7, 6 is a portable wireless communication device of a size that can be folded in two and stored in a chest pocket of a jacket, 7 is an antenna element, 8 is a body of the portable wireless communication device 6, and 8a is The antenna element 7 is attached to the rear surface, and the upper half portion has a keyboard for inputting frequency and functions, and 8b is the lower half portion provided with a microphone. The antenna terminal of the main body 8 of the mobile wireless communication device 6 is connected to the power feeding portion 7c. Further, the dielectric 9 fixes the antenna element 7 and the main body 8 near the feeding portion 7c. Here, the antenna element 7 corresponds to a planar antenna as a holding member.

When using the portable wireless communication device 6 to stand by in the receiving state, it may be held by hand as shown in FIG. 6, but normally, as shown in FIG. 7, the upper half portion 8a and the lower half portion are held. 8b is folded, and the cloth of the pocket is sandwiched between the holding portion 7a and the back surface of the upper half portion 8a, and the cloth is put in the pocket and waits for a call from the other party.

In the above two embodiments, since the dielectric is filled and fixed in the gap between the antenna element and the main body near the power feeding portion, the power feeding portion is not damaged or deformed by some impact. In addition, since the dielectric can concentrate the current near the power supply part, the antenna characteristics do not deteriorate even when used with the pocket sandwiched by the antenna elements.

In two embodiments, the antenna element may be an inverted F antenna. Also, the antenna element body may be made of a rigid metal (for example, iron-based material), but in that case the heat loss of the conductor tends to be large, so most of the antenna element has a small heat loss of the conductor. It may be made of a material (for example, copper), and only the vicinity of the power feeding portion may be made of a rigid metal (or a spring material). Furthermore, a printed patch antenna may be attached to a non-conductive and elastic holding member such as synthetic resin.

Further, when the antenna element serving as a holding member is attached to the side where the speaker is present, the speaker also faces the outside of the body, so that the voice can be heard easily.

[0022]

[Effect of device]

 When the portable wireless communication device of the present invention is stored in a chest pocket of a jacket or the like, the holding member as a flat antenna faces the outside of the body, so that the transmission / reception characteristics of the antenna do not deteriorate. Further, since the built-in planar antenna is provided outside so that it can be used also as a holding member, the size of the main body of the portable wireless communication device can be further reduced.

[Brief description of drawings]

FIG. 1 is a perspective view of a portable wireless communication device according to a first embodiment when it is used by hand.

FIG. 2 is a perspective view of the portable wireless communication device of FIG. 1 housed in a chest pocket of a jacket.

FIG. 3 is an enlarged view of the vicinity of an antenna element attached to the back surface of the portable wireless communication device of FIG.

4 is a cross-sectional view taken along the line AA of FIG.

FIG. 5 is an enlarged cross-sectional view around an antenna element of a portable wireless communication device of another embodiment.

FIG. 6 is a perspective view of the portable wireless communication device according to the second embodiment when it is used by hand.

FIG. 7 is a perspective view of the portable wireless communication device of FIG. 6 housed in a chest pocket of a jacket.

[Explanation of symbols]

1,6 Portable wireless communication device 2,8 Main body 2a Display part 2b Speaker 2c Antenna terminal 3,5,7 Antenna element (planar antenna) (holding member) 3a, 7a Clamping part 3b Grounding part 3c, 7c Power feeding part 4, 9 Dielectric 5a hook

Claims (1)

[Scope of utility model registration request] 1. A portable radio comprising: a wireless communication device main body; and a metal plate-shaped holding member having an upper end fixed and a lower end urged toward the main body and arranged in parallel to a rear surface of the main body. In the communication device, a portable wireless communication device characterized in that a power feeding portion provided near an upper end portion of the holding member is connected to an antenna terminal of a main body, and the holding member is configured as a planar antenna.