KR20030030843A - For a portable communication apparatus - Google Patents

Abstract

The present invention provides an antenna in which the cellular phone is not enlarged or the manufacturing cost is increased.

To this end, the present invention has one feed terminal 5 through which power is fed to the antenna, and a plurality of kitchen parts 2a and 2b that radiate electromagnetic waves, and the kitchen parts 2a and 2b are each separated by a predetermined distance A. Each member which is arrange | positioned at the distant position and comprises an antenna is integrated including the said feed terminal 5 and the kitchen parts 2a and 2b.

Description

Antenna for mobile communication devices {FOR A PORTABLE COMMUNICATION APPARATUS}

The present invention relates to an antenna embedded in a portable communication device such as a mobile phone.

SAR (Specific Absorption Rate) is an indicator of the amount of electromagnetic waves emitted by a portable communication device such as a cellular phone. These SARs have been desired to be reduced because they are undesirable for the human body. In order to reduce SAR, the intensity | strength of the electromagnetic wave irradiated to a human body from a cellular phone should be reduced.

To this end, there has conventionally been a mobile phone as shown in FIG. That is, in the prior art, the antenna 101, which is a radiation source of electromagnetic waves, is disposed at a position far from the human head 103 in the main body 102 of the cellular phone, so as to separate the distance between the radiation source of the electromagnetic waves and the human body, thereby increasing the intensity of the electromagnetic wave emitted to the human body. It was to lower.

As another method, a method as shown in Fig. 9 can be considered. That is, a method of disposing a member 104 that shields or absorbs electromagnetic waves between the antenna 101, which is a radiation source of electromagnetic waves, and the head 103 of a human.

However, these methods have a problem that the projections of the cellular phone become large or thick, which is inconvenient when stored in a pocket or the like. In addition, when the projections are large, the mechanical strength is lowered, which may weaken the impact caused by falling or the like. Moreover, when storing a mobile telephone in a pocket or the like, there is a possibility that the surface provided with the antenna 101 is stored closer to the human body. In this case, the effect of lowering the intensity of the electromagnetic wave is lost.

In order to solve the above problem, a method as shown in FIG. 10 can be considered. That is, a plurality of antennas are provided, and each antenna 101a, 101b,... A method of weakening the intensity of electromagnetic waves emitted from According to the above method, since the radiated electromagnetic wave is dispersed, the intensity of the electromagnetic wave irradiated to a predetermined point of the human body is weakened.

However, in the method shown in Fig. 10, since a plurality of antennas are provided, the antennas 101a, 101b,... Therefore, phase shifters 105a, 105b,... It is necessary to provide a component such as a power divider 106 or the like. In such a case, it is necessary to secure a space on which the parts are to be placed on the substrate, which causes a problem that the cellular phone becomes large. In addition, there is a problem that the manufacturing cost increases by the number of steps for assembling a plurality of antennas into the main body of the mobile phone, the number of steps for mounting the parts on a substrate, and the amount of the parts themselves.

Accordingly, it is an object of the present invention to provide an antenna in which the mobile telephone is not enlarged or the manufacturing cost is increased.

1 is a diagram showing an antenna configuration according to a first embodiment of the present invention;

2 is a diagram illustrating an antenna configuration according to a second embodiment of the present invention;

3 is a view showing the external appearance of a mobile phone body (housing) incorporating the antenna shown in FIG. 1;

FIG. 4 is a view showing the external appearance of a mobile phone body (housing) incorporating the antenna shown in FIG. 2;

FIG. 5 is a view showing the external appearance of a mobile phone body (housing) in which both sides of the antenna shown in FIG. 1 and the antenna shown in FIG.

FIG. 6 is a view showing the external appearance of a mobile phone body (housing) having an antenna in which one side of the antenna shown in FIG. 1 is combined with one side of the antenna shown in FIG.

7 is a graph showing the intensity of electromagnetic waves in the vicinity of the chef part,

8 shows a conventional cellular phone,

9 is a view showing a method of reducing the intensity of electromagnetic waves irradiated to the human body,

10 is a view showing a method of reducing the intensity of electromagnetic waves irradiated to the human body,

<Brief description of the symbols in the drawings>

1: fingerboard

2a, 2b: short circuit part (kitchen radiator part)

2c, 2d: chef

3a, 3b: dark

4: feeding member

5: feed terminal

6: feeding circuit

101: antenna

101a, 101b,... : antenna

102: main body

103: tofu

104: absence

105a, 105b,... : Sanggi Lee

106: power divider

A, B, d: distance

To this end, the present invention has a feed terminal for feeding power to the antenna, and a plurality of kitchen parts for radiating electromagnetic waves, the kitchen parts are disposed at a predetermined distance from each other, each of the constituting the antenna The member is integrated, including the feed terminal and the kitchen unit.

1 is a diagram showing an antenna configuration according to a first embodiment of the present invention. The antenna shown in FIG. 1 has a structure in which two inverted-F antennas are combined to form one antenna. That is, short circuit parts (spinning parts) 2a and 2b are provided at positions near two angles on one side of the fingerboard 1, respectively. The short circuit parts (spinning parts) 2a and 2b are members perpendicular to the fingerboard 1. The arm part 3a is connected to the short circuit part 2a, and the other arm part 3b is connected to the short circuit part 2b. Arms 3a and 3b are members parallel to fingerboard 1. The feeding member 4 is connected to the point away from the connection point with the short circuit part 2a of the arm part 3a by a predetermined distance d, and the point away from the connection point with the short circuit part 2b of the arm part 3b by the predetermined distance d. The feed terminal 5 is provided in the intermediate point between the connection point with the arm part 3a of the power feeding member 4, and the connection point with the arm part 3b. The power supply terminal 6 is connected to the power supply terminal 5 for supplying power to the arm.

According to the above configuration, since two short-circuiting portions (main radiating portions) that radiate electromagnetic waves are provided at positions separated by a predetermined distance A while being an integrated antenna (one component), radiated electromagnetic waves are dispersed.

Further, in another embodiment of the present invention, it is also possible to provide three or more pairs of short circuit parts (spinning parts) and arm parts, and to have three or more kitchen parts for electromagnetic waves.

2 is a diagram showing an antenna configuration in a second embodiment of the present invention.

The antenna has a structure in which two helical antennas are combined to form one antenna. That is, the kitchen parts 2c and 2d arrange | positioned in the position separated from each other by the predetermined distance B are connected to the common feed terminal 5. The power supply terminal 5 is connected to one end of the power supply circuit 6 for supplying power to the antenna. The other end of the power supply circuit 6 is connected to the fingerboard 1.

Also in the above-described configuration, since two kitchen parts are provided at positions separated by a predetermined distance B while being an integrated antenna (one component), the radiated electromagnetic waves are dispersed.

In addition, in another embodiment of the present invention, it is also possible to have three or more kitchen cooking units.

Further, in another embodiment of the present invention, one antenna may be combined by combining one side of the antenna shown in FIG. 1 and one side of the antenna shown in FIG.

FIG. 3 is a view showing the external appearance of the cellular phone main body (housing) incorporating the antenna shown in FIG. 1, and FIG. 4 is a view showing the external appearance of the cellular phone main body (housing) incorporating the antenna shown in FIG. to be. As shown in Figs. 3 and 4, when the two kitchen parts are provided spaced apart by the width of the main body of the cellular phone (housing), the radiation of electromagnetic waves is most dispersed.

FIG. 5 is a diagram showing an external appearance of a mobile phone main body (housing) in which both sides of the antenna shown in FIG. 1 and the antenna shown in FIG. As shown in FIG. 5, when four chefs are installed at four corners of the mobile phone body (housing), the radiation of electromagnetic waves is most dispersed.

FIG. 6 is a view showing the external appearance of a mobile phone body (housing) in which an antenna is formed by combining one side of the antenna shown in FIG. 1 and one side of the antenna shown in FIG.

7 is a graph showing the intensity of electromagnetic waves in the vicinity of the chef part. In the graph, the axis of abscissas is position, and the axis of ordinates is intensity of electromagnetic waves. 7 (a) is a case where the chef part is one place, FIG. 7 (b) is a graph when the chef part is two places. FIG. 7B is a graph in the case where power is supplied to the two chefs at the same phase and the same amplitude. When two kitchen parts are provided in one antenna, the intensity of electromagnetic waves at the location where the kitchen parts are located is 1/2 compared with the case where the kitchen parts are located at one place.

According to the present invention described above, since there is no need to provide components such as a power divider, the cellular phone does not become large. In addition, since the antenna of the present invention is integrated, the number of assembling steps is reduced as compared with the case of assembling a plurality of antennas into the cellular phone main body, and the manufacturing cost of the cellular phone becomes low. In addition, since the number of steps for mounting the component on the substrate and the cost of the component itself are not charged, the manufacturing cost of the cellular phone is further lowered.

Claims (4)

One feeding terminal to which feeding to the antenna is performed, It has a plurality of kitchen parts for emitting electromagnetic waves, The kitchen unit is disposed at a position separated from each other by a predetermined distance, And each member constituting the antenna is integral with the feed terminal and the kitchen unit. The method of claim 1, The kitchen unit is an antenna for a mobile communication device, characterized in that the short circuit portion of the inverted F antenna. The method of claim 1, The kitchen unit antenna for a mobile communication device, characterized in that the kitchen portion of the helical antenna. The method according to any one of claims 1 to 3, The kitchen unit is an antenna for a mobile communication device, characterized in that disposed in the housing in the most apart from each other in a predetermined direction.