KR20030030844A - Inverted f antenna having reduced specific absorption rate - Google Patents

Inverted f antenna having reduced specific absorption rate Download PDF

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Publication number
KR20030030844A
KR20030030844A KR1020020044755A KR20020044755A KR20030030844A KR 20030030844 A KR20030030844 A KR 20030030844A KR 1020020044755 A KR1020020044755 A KR 1020020044755A KR 20020044755 A KR20020044755 A KR 20020044755A KR 20030030844 A KR20030030844 A KR 20030030844A
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South Korea
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antenna
conductor plate
inverted
short circuit
power feeding
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KR1020020044755A
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Korean (ko)
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KR100640366B1 (en
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하세가와미노루
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삼성전자주식회사
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
    • 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
    • H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
    • H01Q13/08—Radiating ends of two-conductor microwave transmission lines, e.g. of coaxial lines, of microstrip lines

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Waveguide Aerials (AREA)
  • Details Of Aerials (AREA)

Abstract

PURPOSE: An inverted F antenna for reducing SAR(Specific Absorption Rate) of an electromagnetic wave is provided to reduce the SAR and obtain frequency bandwidth without increasing an occupying area of an antenna in a cellular phone. CONSTITUTION: A plurality of main radiation portions(2a,2b) are arranged in a predetermined interval in order to radiate electromagnetic waves. A conductive plate(3) is connected to the main radiation portions(2a,2b). A feeder member(5) is used for performing a feed process to the conductive plate(3). The main radiation portions(2a,2b) are formed with the main radiation portions of an inverted F antenna. The feeder member(5) performs the feeding process to the conductive plate by using electron coupling. The feeder member(5) is connected to a plurality of feeder terminals(4a,4b). A plurality of cut portions(3a,3b) are formed at the conductive plate(3).

Description

전자파 인체 흡수율 감소 역에프안테나{INVERTED F ANTENNA HAVING REDUCED SPECIFIC ABSORPTION RATE}Induction F ANTENNA HAVING REDUCED SPECIFIC ABSORPTION RATE}

본 발명은, 휴대전화 등의 휴대통신기기에 내장되는 안테나에 관한 것이다.The present invention relates to an antenna incorporated in a portable communication device such as a cellular phone.

휴대전화 등의 휴대통신기기는, 휴대하기 편리하도록 소형을 요구하고 있으므로, 이러한 휴대통신기기에 내장되는 안테나 또한, 소형을 필요로 한다. 상기 요구를 만족시키는 안테나로서, 역F안테나(역에프안테나)가 있다. 도 6은, 일반적인 역F안테나의 구성을 나타내는 도이다. 지판 101의 가장자리에, 상기 지판 101에 수직으로 단락부(주방사부) 102를 돌출시키고, 상기 단락부 102의 상단에, 지판 101과 평행한 도체판(평행 엘리먼트) 103이 접속되어 있다. 그리고, 상기 도체판103에서의 도체판 103과 단락부 102가 접속된 점부터 소정의 거리 d만큼 떨어진 위치에, 급전회로 104가 접속된다.Since portable communication devices such as mobile phones require a small size so as to be convenient to carry, an antenna built in such a mobile communication device also requires a small size. As an antenna that satisfies the request, there is an inverted F antenna (inverted F antenna). 6 is a diagram illustrating a configuration of a general inverted F antenna. The short circuit part (spinning part) 102 is projected on the edge of the finger board 101 perpendicularly to the said finger board 101, and the conductor board (parallel element) 103 parallel to the finger board 101 is connected to the upper end of the said short board part 102. As shown in FIG. The power supply circuit 104 is connected to a position separated by a predetermined distance d from the point where the conductor plate 103 and the short circuit section 102 in the conductor plate 103 are connected.

하지만, 휴대전화 등의 휴대통신기기가 방사하는 전자파가 인체에 흡수되는 양, 즉, SAR(Specific Absorption Rate, 전자파 인체 흡수율)을 감소시키는 것이 요구되게 되었다. SAR을 감소시키기 위해서는, 휴대전화로부터 인체에 조사되는 전자파의 강도를 저하시키면 된다.However, it has become required to reduce the amount of electromagnetic waves emitted by portable communication devices such as mobile phones to be absorbed by the human body, that is, SAR (Specific Absorption Rate). In order to reduce SAR, the intensity | strength of the electromagnetic wave irradiated to a human body from a cellular phone should be reduced.

이를 위하여, 단순히, 휴대전화의 송신전력을 내려도 되지만, 그렇게 하게 되면 전파가 달하는 범위가 좁아지게 된다.To this end, it is possible to simply lower the transmission power of the cellular phone, but doing so narrows the range of radio waves.

전파가 달하는 범위를 좁히지 않고(송신전력을 내리지 않고), SAR을 감소시키기 위해서는, 도 7에 도시하는 방법이 고려된다. 즉, 1개의 휴대전화 내에 2개의 역F안테나를 구비하여, 전자파가 방사되는 점(주방사부)을 분산시키는 방법이다. 상기 방법에 의하면 2개의 역F안테나의 각각의 단락부 102a 및 102b로부터 전자파가 방사되므로, 1개의 역F안테나만을 이용하는 경우에 비하여, 각 단락부 102a 및 102b로부터 방사시키는 전자파의 강도를 1/2로 약화시킬 수 있다.In order to reduce the SAR without narrowing the range in which radio waves reach (without transmitting power), the method shown in FIG. 7 is considered. In other words, two inverted F antennas are provided in one cellular phone to disperse the points (equivalent radiator) where electromagnetic waves are emitted. According to the above method, since electromagnetic waves are emitted from each of the short-circuits 102a and 102b of the two inverted F antennas, the intensity of the electromagnetic waves emitted from each of the short-circuits 102a and 102b is 1/2 compared to the case of using only one inverted F antenna. Can be weakened.

하지만, 휴대전화에서는, 전술한 바와 같이, 휴대하기 편리하도록 소형을 요구하고 있으므로, 안테나가 점유할 수 있는 스페이스도 한정되어 있다. 상기와 같이, 안테나를 2개로 하더라도, 안테나 전체가 점유할 수 잇는 스페이스를 증가시키는 일은 어렵다. 안테나 전체가 점유하는 스페이스를 늘리지 않는다고 한다면, 안테나 한 개당 도체판(평행 엘리먼트)의 체적이 반이 된다. 그렇게 되면, 주파수 대역폭도 반으로 감소되고, 휴대전화에 필요한 대역폭을 확보할 수 없게 될 우려가있다.However, in the cellular phone, as described above, since a small size is required to be convenient to carry, the space that an antenna can occupy is also limited. As mentioned above, even if two antennas are used, it is difficult to increase the space which the whole antenna can occupy. If you do not increase the space occupied by the entire antenna, then the volume of the conductor plate (parallel element) per antenna is halved. If so, the frequency bandwidth is also cut in half, and there is a fear that the bandwidth required for the cellular phone cannot be obtained.

도 8은, 안테나의 도체판의 체적 V와 주파수 대역폭와의 관계를 나타내는 그래프이다. 이 그래프에 도시하는 바와 같이, 안테나의 도체판의 체적 V와 주파수 대역폭와는 비례 관계에 있다. 따라서, 휴대전화에 단일한 역F안테나를 내장시킬 경우에, 도체판의 체적으로서를 확보할 수 있다고 한다면, 대역폭으로서를 확보할 수 있다. 한편, 휴대전화에 2개의 역F안테나를 내장시킬 경우는, 도체판의 체적이가 되므로, 대역폭도가 된다. 이 때, 휴대전화에 필요한 대역폭이이였다고 한다면, 필요한 대역폭을 확보할 수 없게 된다.8 shows the volume V and frequency bandwidth of the conductor plate of the antenna. This graph shows the relationship with. As shown in this graph, the volume V and frequency bandwidth of the conductor plate of the antenna Is proportional to. Therefore, when a single inverted F antenna is incorporated into the cellular phone, the volume of the conductor plate If we can secure the Can be secured. On the other hand, when two inverted F antennas are built into the cellular phone, the volume of the conductor plate is reduced. , The bandwidth Becomes At this point, the bandwidth required If this is the case, the necessary bandwidth cannot be obtained.

따라서, 본 발명은 상기와 같은 문제를 해결하기 위하여 이루어진 것으로, 휴대전화 내에서 안테나가 점유하는 스페이스를 늘리지 않고, SAR을 감소시키며, 또한 주파수 대역폭도 확보할 수 있는 안테나를 제공함에 있다.Accordingly, the present invention has been made to solve the above problems, and to provide an antenna that can reduce the SAR and also secure the frequency bandwidth without increasing the space occupied by the antenna in the mobile phone.

이를 위한 본 발명은 전자파를 방사하는 복수의 주방사부와, 이들의 주방사부의 모두와 접속된 도체판과, 상기 도체판에 급전을 행하는 급전부재를 가지며, 상기 주방사부는, 상호 소정의 거리만큼 떨어진 위치에 배치되어 있음을 특징으로 하는 안테나이다.The present invention has a plurality of kitchen parts for radiating electromagnetic waves, a conductor plate connected to all of these kitchen parts, and a power feeding member for feeding power to the conductor plate, the kitchen parts by a predetermined distance from each other The antenna is characterized in that it is disposed in a distant position.

도 1은 본 발명의 실시 예에 따른 안테나의 구성을 나타내는 도이다,1 is a view showing the configuration of an antenna according to an embodiment of the present invention,

도 2는 안테나의 공진주파수를 도 1에 도시한 안테나보다 낮게 설정하기 위하여, 도체판 3에 홀(hole) 3c를 구비한 예를 나타내는 도이다,FIG. 2 is a view showing an example in which a conductor 3 is provided with a hole 3c in order to set the resonance frequency of the antenna lower than that of the antenna shown in FIG.

도 3은 4개의 단락부 2a, 2b, 2c, 2d를 구비하고, 도체판 3을 2층화하여, 급전방법을 전자결합에 의한 급전으로 한 예를 나타내는 도이다,FIG. 3 is a diagram showing an example in which four short circuit sections 2a, 2b, 2c, and 2d are provided, and the conductive plate 3 is layered to give a power feeding method by electromagnetic coupling.

도 4는 2개의 단락부 2e 및 2f를 구비하고, 도체판 3을 2층화하여, 급전방법을 전자결합에 의한 급전으로 한 예를 나타내는 도이다,FIG. 4 is a diagram showing an example in which two short circuit portions 2e and 2f are provided, and the conductor plate 3 is doubled, and the power feeding method is a power feeding by electromagnetic coupling.

도 5는 주방사부 부근의 전자파의 강도를 나타내는 그래프이다,5 is a graph showing the intensity of electromagnetic waves in the vicinity of the kitchen part;

도 6은 종래의 일반적인 역F안테나의 구성을 나타내는 도이다,Fig. 6 is a diagram showing the structure of a conventional general F antenna.

도 7은 종래의 SAR을 감소시키는 방법을 나타내는 도이다,7 is a diagram showing a method of reducing a conventional SAR,

도 8은 안테나의 도체판의 체적 V와 주파수대역폭와의 관계를 나타내는 그래프이다.8 shows the volume V and frequency bandwidth of the conductor plate of the antenna. This graph shows the relationship with.

<도면의 주요 부호에 대한 설명><Description of Major Symbols in Drawing>

1 : 지판1: fingerboard

2a, 2b, 2c, 2d, 2e, 2f : 단락부(주방사부)2a, 2b, 2c, 2d, 2e, 2f: short circuit part (spinning part)

3 : 도체판(평행 엘리먼트)3: conductor plate (parallel element)

3a, 3b : 절결3a, 3b: notch

3c : 홀3c: hole

3d, 3e, 3f, 3g : 층3d, 3e, 3f, 3g: layer

4a, 4b : 급전단자4a, 4b: Feeding terminal

5, 5a : 급전부재5, 5a: feeding member

6 : 급전회로6: power feeding circuit

d : 거리d: distance

이하 본 발명의 바람직한 일 실시 예를 첨부한 도면을 참조하여 상세히 설명한다. 하기에서 각 도면의 구성요소들에 참조부호를 부가함에 있어서, 동일한 구성요소들에 대해서는 비록 다른 도면상에 표시되더라도 가능한 한 동일한 부호를 가지도록 하고 있음에 유의해야 한다.Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description of the reference numerals to the components of the drawings, it should be noted that the same reference numerals as much as possible even if displayed on different drawings.

도 1은, 본 발명의 일 실시 예에서의 안테나의 구성을 나타내는 도이다.1 is a diagram showing the configuration of an antenna in an embodiment of the present invention.

본 실시 예에서는, 역F안테나의 전자파 주방사부인 단락부를 복수로 하면서, 단락부 이외의 안테나 엘리먼트를 공통으로 하고 있다. 즉, 전자파를 방사하는 점이 분산되어 있어 SAR이 감소되면서, 도체판(평행 엘리먼트)은 공통(1개)으로 되어 있으므로, 도체판의 체적이 확보되며, 따라서, 주파수 대역폭은, 역F안테나를 1개 구비한 경우와 동일하다.In this embodiment, the antenna elements other than the short circuit part are made common while a plurality of short circuit parts which are electromagnetic wave cookers of an inverted F antenna are made. That is, since the points radiating electromagnetic waves are dispersed and SAR is reduced, the conductor plates (parallel elements) are in common (one), so that the volume of the conductor plates is secured, so that the frequency bandwidth is 1 F antenna. It is the same as the case with dog.

지판 1의 가장자리에, 상기 지판 1과 수직으로 2개의 단락부(주방사부) 2a 및 2b가 돌출되어 있다. 단락부 2a와 단락부 2b는, 대향되는 위치에 구비되어 있다. 즉, 지판 1이 대향되는 가장자리 단에 각각 구비되어 있다. 단락부 2a 및 2b의 상단은, 지판 1과 평행한 도체판(평행 엘리먼트) 3과 접속되어 있다. 도체판 3에서의 단락부 2a와 도체판 3과의 접속점으로부터 거리 d만큼 떨어진 위치에, 급전단자 4b가 구비되어 있다. 급전단자 4a 및 4b에는, 공통의 급전부재 5가 접속되어 있다. 급전부재 5에는, 급전회로 6으로부터 급전된다. 도체판 3에는, 단락부 2a와 접속된 부분의 가로에 절결 3a가 구비되어 있고, 단락부 2b와 접속된 부분의 가로에 절결 3b가 구비되어 있다.At the edges of the fingerboard 1, two short-circuit portions (main radiator) 2a and 2b protrude perpendicularly to the fingerboard 1. The short circuit part 2a and the short circuit part 2b are provided in the opposing position. That is, the fingerboard 1 is provided in the opposite edge stage, respectively. The upper ends of the short circuit parts 2a and 2b are connected to a conductor plate (parallel element) 3 parallel to the finger plate 1. The feed terminal 4b is provided in the position separated from the connection point of the short circuit part 2a in the conductor plate 3, and the conductor plate 3 by the distance d. Common feed members 5 are connected to the feed terminals 4a and 4b. The power feeding member 5 is fed from the power feeding circuit 6. The conductor plate 3 is provided with the notch 3a in the horizontal direction of the part connected with the short circuit part 2a, and the notch 3b is provided in the horizontal direction of the part connected with the short circuit part 2b.

상기 구성에 의하면, 단락부(주방사부)가 2개 구비되어 있으므로, 방사되는전파를 분산시킬 수 있으며, SAR이 감소된다. 동시에, 2개의 단락부 2a 및 2b와, 2개의 급전단자 4a 및 4b는 도체판 3을 공통(1개)으로 하고 있다. 따라서, 안테나 전체가 차지하는 스페이스가, 종래의 역F안테나와 동일하다. 그럼에도 불구하고, 1조의 단락부 및 급전단자마다 도체판 3의 체적이 감소되지 않고 있다. 따라서, 주파수 대역폭도 감소되지 않는다.According to the above structure, since two short circuit parts (main radiation parts) are provided, it is possible to disperse radiated radio waves and to reduce SAR. At the same time, the two short circuit parts 2a and 2b and the two feed terminals 4a and 4b have the conductor plate 3 in common (one). Therefore, the space occupied by the entire antenna is the same as that of the conventional inverted F antenna. Nevertheless, the volume of the conductor plate 3 is not reduced for each set of short-circuits and feed terminals. Thus, the frequency bandwidth is also not reduced.

도 2는, 안테나의 공진주파수를 도 1에 도시한 안테나보다 낮게 설정하기 위하여, 도체판 3에 홀 3c를 구비한 예를 나타내는 도이다.FIG. 2 is a diagram showing an example in which the conductor plate 3 is provided with a hole 3c in order to set the resonance frequency of the antenna lower than that of the antenna shown in FIG. 1.

이렇게 함으로써, 도체판 3에서의 전류가 흐르는 경로를 길게 하고, 공진주파수를 낮게 하고 있다. 한편, 이하의 설명에서, 동일한 구성에는 동일한 부호를 달고, 그 설명을 생략하기로 한다.By doing this, the path through which the current flows in the conductor plate 3 is lengthened, and the resonance frequency is lowered. In addition, in the following description, the same code | symbol is attached | subjected to the same structure and the description is abbreviate | omitted.

도 3은, 4개의 단락부 2a, 2b, 2c, 2d를 구비하고, 도체판 3을 2층화하여, 급전방법을 전자결합에 의한 급전으로 한 예를 나타내는 도이다. 도 3(a)는 상기 안테나의 사시도, 도 3(b)는 상면도, 도 3(c)는 측면도이다. 단락부 2a와 2b가 대향되는 위치에 구비되고, 단락부 2c와 2d가 대향되는 위치에 구비되고 있다. 도체판 3은, 단락부 2a, 2b, 2c, 2d와 접속된, 지판 1에 가까운 측의 층 3d와, 지판 1로부터 먼 측의 층 3e에 의하여 구성되어 있다. 층 3d는, "X"와 같은 형상을 하고 있으며, 그 단부에서 단락부 2a, 2b, 3c, 2d와 접속되고, 그 중심부에서 층 3e와 접속되어 있다. 층 3e에는, 홀 3c가 구비되어 있다. 도체판 3의 층 3e의 하부에는, 도체판 3에 급전하기 위한 급전부재 5a가 구비되어 있다. 도체판 3의 층 3e와 급전부재 5a는 접촉되어 있지 않고, 급전부재 5a는, 전자결합에 의한 급전을 행한다. 급전부재 5a에는, 급전회로 6으로부터 급전된다.FIG. 3 is a diagram showing an example in which four short circuit sections 2a, 2b, 2c, and 2d are provided, and the conductive plate 3 is layered to give a power feeding method by electromagnetic coupling. Fig. 3A is a perspective view of the antenna, Fig. 3B is a top view, and Fig. 3C is a side view. The short circuit parts 2a and 2b are provided in the opposing position, and the short circuit parts 2c and 2d are provided in the opposing position. The conductor plate 3 is comprised by the layer 3d of the side close to the fingerboard 1 connected with the short circuit parts 2a, 2b, 2c, and 2d, and the layer 3e of the side farther from the fingerboard 1. The layer 3d has the same shape as "X", is connected to the short circuit parts 2a, 2b, 3c, and 2d at its end and is connected to the layer 3e at the center thereof. The hole 3c is provided in the layer 3e. The lower part of the layer 3e of the conductor plate 3 is provided with a power feeding member 5a for feeding the conductor plate 3. The layer 3e of the conductor plate 3 and the power feeding member 5a are not in contact with each other, and the power feeding member 5a supplies electric power by electromagnetic coupling. The power feeding member 5a is fed from the power feeding circuit 6.

상기 구성에 의하면, 도체판 3의 다층화에 의하여, 도체판 3에서의 전류가 흐르는 경로가 더 길어지고, 그리고, 공진주파수를 낮게 설정할 수 있게 된다. 또한, 단락부의 수를 더 증가시킴으로써 SAR을 더 감소시키고 있다.According to the above configuration, the multilayered conductor plate 3 allows a longer path for current flow in the conductor plate 3 to be set longer, and a lower resonance frequency can be set. In addition, the SAR is further reduced by further increasing the number of short circuits.

도 4는, 2개의 단락부 2e 및 2f를 구비하고, 도체판 3을 2층화하여, 급전방법을 전자결합에 의한 급전으로 하는 예를 나타내는 도이다. 도 4(a)는, 상기 안테나의 사시도, 도 4(b)는 상면도, 도 4(c)는 측면도, 도 4(d)는 전면도이다. 도체판 3은, 단락부 2e, 2f와 접속된 지판 1에 가까운 측의 층 3f와, 지판 1로부터 먼 측의 층 3g에 의하여 구성되어 있다. 층 3f는, 「コ」의 모양을 하고 있으며, 그 단부에서 단락부 2e, 2f와 접속되고, 그 중심부에서 층 3g와 접속되어 있다. 층 3g에는, 홀 3c가 구비되어 있다.FIG. 4 is a diagram showing an example in which two short circuit portions 2e and 2f are provided, and the conductor plate 3 is layered in two, so that the power feeding method is a power feeding by electromagnetic coupling. Fig. 4A is a perspective view of the antenna, Fig. 4B is a top view, Fig. 4C is a side view, and Fig. 4D is a front view. The conductor plate 3 is comprised by the layer 3f on the side close to the fingerboard 1 connected with the short circuit parts 2e and 2f, and the layer 3g on the side farther from the fingerboard 1. The layer 3f has the shape of "co", is connected with the short circuit parts 2e and 2f at the edge part, and is connected with the layer 3g in the center part. The hole 3c is provided in the layer 3g.

도 5는, 주방사부 부근의 전자파의 강도를 나타내는 그래프이다. 상기 그래프에서의 횡축은 위치, 종축은 전자파의 강도이다. 도 5(a)는, 주방사부가 1개인 경우, 도 5(b)는, 주방사부가 2개인 경우의 그래프이다. 또한, 도 5(b)는, 2개의 주방사부에, 동위상, 동진폭으로 급전된 경우의 그래프이다. 1개의 안테나에 주방사부를 2래 구비하면, 주방사부가 1개인 경우와 비교하여, 주방사부가 있는 위치에서의 전자파의 강도는 1/2이 된다.5 is a graph showing the intensity of electromagnetic waves in the vicinity of the kitchen part. In the graph, the axis of abscissas is position, and the axis of ordinates is intensity of electromagnetic waves. FIG. 5 (a) is a graph in the case where there is one chef part, and FIG. 5 (b) is a graph in the case where two chef parts are provided. 5 (b) is a graph in the case where power is supplied to the two kitchen units in the same phase and in the same amplitude. If two antennas are provided in one antenna, the intensity of electromagnetic waves at a position where the kitchen unit is located is 1/2 compared with the case where there is one kitchen unit.

이상 설명한 바와 같이, 본 발명에 의하면, 휴대전화 내에서 안테나가 점유하는 스페이스를 늘리지 않고, SAR을 감소시키며, 또한 주파수 대역폭도 확보할 수 있는 안테나를 제공할 수 있다.As described above, according to the present invention, it is possible to provide an antenna that can reduce SAR and secure a frequency bandwidth without increasing the space occupied by the antenna in the mobile phone.

Claims (5)

휴대전화에 구비되는 안테나에 있어서,In the antenna provided to the mobile phone, 전자파를 방사하며, 상호 소정의 거리만큼 떨어진 위치에 배치되는 복수의 주방사부들과,A plurality of kitchen parts which radiate electromagnetic waves and are disposed at positions separated from each other by a predetermined distance; 상기 주방사부들 모두와 접속된 도체판과,A conductor plate connected to all of the chef parts; 상기 도체판에 급전을 행하는 급전부재를 포함함을 특징으로 하는 안테나.And a power feeding member for feeding power to the conductor plate. 제 1항에 있어서,The method of claim 1, 상기 주방사부들은 역에프안테나의 단락부임을 특징으로 하는 안테나.The kitchen unit is an antenna, characterized in that the short section of the inverse F antenna. 제 1항 또는 제 2항에 있어서,The method according to claim 1 or 2, 상기 급전부재는, 상기 도체판에 전자결합에 의한 급전을 행함을 특징으로 하는 안테나.The power feeding member performs power feeding by electromagnetic coupling to the conductor plate. 제 1 항 또는 제 2항에 있어서,The method according to claim 1 or 2, 상기 도체판은, 복수의 층에 걸쳐서 형성되어 있음을 특징으로 하는 안테나.The conductor plate is formed over a plurality of layers. 제 3항에 있어서,The method of claim 3, wherein 상기 도체판은, 복수의 층에 걸쳐서 형성되어 있음을 특징으로 하는 안테나.The conductor plate is formed over a plurality of layers.
KR1020020044755A 2001-10-12 2002-07-29 Inverted f antenna having reduced specific absorption rate KR100640366B1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101005285B1 (en) * 2008-07-18 2011-01-04 주식회사 이엠따블유 Antenna for improving specific absorption rate

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7317901B2 (en) * 2004-02-09 2008-01-08 Motorola, Inc. Slotted multiple band antenna
EP1796207A4 (en) 2004-09-28 2009-06-17 Panasonic Corp Radio machine antenna device and portable radio machine
WO2007055232A1 (en) * 2005-11-08 2007-05-18 Matsushita Electric Industrial Co., Ltd. Composite antenna and portable terminal using same
WO2008023800A1 (en) * 2006-08-24 2008-02-28 Hitachi Kokusai Electric Inc. Antenna device
JP4875174B2 (en) 2010-02-12 2012-02-15 株式会社東芝 Coupler device

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5283052A (en) * 1975-12-29 1977-07-11 Hitoshi Tokumaru Antenna device
JPS52108755A (en) * 1976-03-09 1977-09-12 Hitoshi Tokumaru Antenna device
JPH0821812B2 (en) * 1988-12-27 1996-03-04 原田工業株式会社 Flat antenna for mobile communication
JP2759471B2 (en) * 1988-12-27 1998-05-28 株式会社豊田中央研究所 Mobile antenna
FR2772517B1 (en) * 1997-12-11 2000-01-07 Alsthom Cge Alcatel MULTIFREQUENCY ANTENNA MADE ACCORDING TO MICRO-TAPE TECHNIQUE AND DEVICE INCLUDING THIS ANTENNA
JPH11340726A (en) * 1998-05-28 1999-12-10 Mitsubishi Materials Corp Antenna device
JP2000183644A (en) * 1998-12-17 2000-06-30 Matsushita Electric Ind Co Ltd Antenna system
SE517218C2 (en) * 1999-09-03 2002-05-07 Ericsson Telefon Ab L M A low profile antenna structure and a device comprising wireless communication means, a wireless mobile terminal, a computer card suitable for insertion into an electronic device and a local network system comprising a base station and a plurality of terminals in wireless communication with the base station comprising such a low profile antenna structure
JP2003142929A (en) * 2001-10-12 2003-05-16 Samsung Electronics Co Ltd Antenna

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101005285B1 (en) * 2008-07-18 2011-01-04 주식회사 이엠따블유 Antenna for improving specific absorption rate

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