JP2003142935A - Antenna - Google Patents
AntennaInfo
- Publication number
- JP2003142935A JP2003142935A JP2001316050A JP2001316050A JP2003142935A JP 2003142935 A JP2003142935 A JP 2003142935A JP 2001316050 A JP2001316050 A JP 2001316050A JP 2001316050 A JP2001316050 A JP 2001316050A JP 2003142935 A JP2003142935 A JP 2003142935A
- Authority
- JP
- Japan
- Prior art keywords
- antenna
- conductor plate
- short
- main
- main radiation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、携帯電話等の携帯
通信機器に内蔵されるアンテナに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an antenna incorporated in a mobile communication device such as a mobile phone.
【０００２】[0002]
【従来の技術】携帯電話等の携帯通信機器は、携帯しや
すいように、小型であることが要求されるので、このよ
うな携帯通信機器に内蔵されるアンテナもまた、小型で
あることが要求される。この要求を満たすアンテナとし
て、逆Ｆアンテナがある。図６は、一般的な逆Ｆアンテ
ナの構成を示す図である。地板１０１の縁に、この地板
１０１に垂直に短絡部（主放射部）１０２を突出させ、
この短絡部１０２の上端に、地板１０１と平行な導体板
（平行エレメント）１０３が接続されている。そして、
この導体板１０３における、導体板１０３と短絡部１０
２とが接続された点から所定の距離ｄだけ離れた位置
に、給電回路１０４が接続される。2. Description of the Related Art A portable communication device such as a mobile phone is required to be small so that it can be easily carried. Therefore, an antenna incorporated in such a portable communication device is also required to be small. To be done. An inverted F antenna is an antenna that satisfies this requirement. FIG. 6 is a diagram showing a configuration of a general inverted F antenna. At the edge of the base plate 101, a short-circuit portion (main radiation portion) 102 is projected perpendicularly to the base plate 101,
A conductor plate (parallel element) 103 parallel to the base plate 101 is connected to the upper end of the short circuit portion 102. And
In the conductor plate 103, the conductor plate 103 and the short-circuit portion 10
The feeding circuit 104 is connected to a position separated by a predetermined distance d from the point where 2 is connected.
【０００３】ところで、携帯電話等の携帯通信機器が放
射する電磁波が人体に吸収される量すなわちＳＡＲ（Sp
ecific Absorption Rate）を低減させることが要求され
るようになってきた。ＳＡＲを低減させるには、携帯電
話から人体に照射される電磁波の強度を低下させればよ
い。By the way, the amount of electromagnetic waves emitted from a mobile communication device such as a mobile phone absorbed by the human body, that is, SAR (Sp
It has become necessary to reduce the ecific absorption rate). In order to reduce SAR, the intensity of electromagnetic waves emitted from the mobile phone to the human body may be reduced.
【０００４】このためには、単に、携帯電話の送信電力
を下げてもよいが、これでは電波が届く範囲が狭くなっ
てしまう。For this purpose, the transmission power of the mobile phone may simply be lowered, but this will narrow the range in which radio waves reach.
【０００５】電波が届く範囲を狭めずに（送信電力を下
げずに）、ＳＡＲを低減させるには、図７に示すような
方法が考えられる。すなわち、１つの携帯電話内に２つ
の逆Ｆアンテナを設けて、電磁波が放射される点（主放
射部）を分散させる方法である。この方法によれば、２
つの逆Ｆアンテナのそれぞれの短絡部１０２ａおよび１
０２ｂから電磁波が放射されるので、１つの逆Ｆアンテ
ナのみを用いる場合に比べて、各短絡部１０２ａおよび
１０２ｂから放射させる電磁波の強度を１／２に弱める
ことが可能になる。A method as shown in FIG. 7 can be considered in order to reduce the SAR without narrowing the range where the radio wave reaches (without reducing the transmission power). That is, this is a method in which two inverted F antennas are provided in one mobile phone to disperse the points (main radiating portions) from which electromagnetic waves are radiated. According to this method, 2
Short circuits 102a and 1 of the respective two inverted F antennas
Since the electromagnetic wave is radiated from 02b, it is possible to reduce the intensity of the electromagnetic wave radiated from each of the short-circuit portions 102a and 102b to half as compared with the case where only one inverted F antenna is used.
【０００６】[0006]
【発明が解決しようとする課題】しかし、携帯電話にお
いては、前述したように、携帯しやすいように、小型で
あることが要求されるので、アンテナが占有できるスペ
ースも限られている。上記のように、アンテナを２個に
しても、アンテナ全体が占有できるスペースを増やすこ
とは難しい。アンテナ全体が占有するスペースを増やさ
ないとすると、１個のアンテナ当たりの導体板（平行エ
レメント）の体積が半分になる。すると、周波数帯域幅
も半減し、携帯電話に必要な帯域幅が確保できなくなる
おそれがでてくる。However, as described above, the portable telephone is required to be small in size so that it can be easily carried. Therefore, the space that can be occupied by the antenna is also limited. As described above, even if there are two antennas, it is difficult to increase the space that can be occupied by the entire antenna. If the space occupied by the entire antenna is not increased, the volume of the conductor plate (parallel element) per antenna is halved. Then, the frequency bandwidth is also halved, and the bandwidth required for the mobile phone may not be secured.
【０００７】図８は、アンテナの導体板の体積Ｖと、周
波数帯域幅Δｆとの関係を示すグラフである。このグラ
フに示すように、アンテナの導体板の体積Ｖと、周波数
帯域幅Δｆとは比例関係にある。従って、携帯電話に単
一の逆Ｆアンテナを内蔵させる場合に、導体板の体積と
してＶ0が確保できるとすると、帯域幅としてΔｆ0が確
保できる。一方、携帯電話に２つの逆Ｆアンテナを内蔵
させる場合には、導体板の体積がＶ0／２となるので、
帯域幅もΔｆ0／２となる。このとき、携帯電話に必要
な帯域幅がΔｆRであったとすると、必要な帯域幅が確
保できなくなる。FIG. 8 is a graph showing the relationship between the volume V of the antenna conductor plate and the frequency bandwidth Δf. As shown in this graph, the volume V of the antenna conductor plate and the frequency bandwidth Δf are in a proportional relationship. Therefore, when a single inverted F antenna is built in the mobile phone, if V 0 can be secured as the volume of the conductor plate, Δf 0 can be secured as the bandwidth. On the other hand, in the case of built-in two inverted F antenna to a mobile phone, the volume of the conductor plate is V 0/2,
Bandwidth also becomes Δf 0/2. At this time, if the bandwidth required for the mobile phone is Δf R , the required bandwidth cannot be secured.
【０００８】本発明は、上記の問題を解決するためにな
されたもので、携帯電話内でアンテナが占有するスペー
スを増やさずに、ＳＡＲを低減させ、かつ周波数帯域幅
も確保できるアンテナを提供するものである。The present invention has been made to solve the above problems, and provides an antenna capable of reducing the SAR and securing the frequency bandwidth without increasing the space occupied by the antenna in the mobile phone. It is a thing.
【０００９】[0009]
【課題を解決するための手段】請求項１に記載の発明
は、 電磁波を放射する複数の主放射部と、これらの主
放射部の全てと接続された導体板と、この導体板に給電
を行う給電部材とを有し、前記主放射部は、相互に所定
の距離だけ離れた位置に配置されていることを特徴とす
るアンテナである。According to a first aspect of the present invention, a plurality of main radiating portions that radiate electromagnetic waves, a conductor plate connected to all of these main radiating portions, and power is supplied to the conductor plates. The antenna is characterized in that it has a feeding member for carrying out, and the main radiation parts are arranged at positions separated from each other by a predetermined distance.
【００１０】請求項２に記載の発明は、 前記主放射部
は、逆Ｆアンテナの短絡部であることを特徴とする請求
項１に記載のアンテナである。The invention according to claim 2 is the antenna according to claim 1, wherein the main radiation portion is a short-circuit portion of an inverted F antenna.
【００１１】請求項３に記載の発明は、 前記給電部材
は、前記導体板に電磁結合による給電を行うことを特徴
とする請求項１または２に記載のアンテナである。The invention according to claim 3 is the antenna according to claim 1 or 2, characterized in that the feeding member feeds power to the conductor plate by electromagnetic coupling.
【００１２】請求項４に記載の発明は、 前記導体板
は、複数の層に渡って形成されていることを特徴とする
請求項１から３のいずれかに記載のアンテナである。The invention according to claim 4 is the antenna according to any one of claims 1 to 3, characterized in that the conductor plate is formed over a plurality of layers.
【００１３】[0013]
【発明の実施の形態】図１ は、本発明の一実施形態に
おけるアンテナの構成を示す図である。本実施形態にお
いては、逆Ｆアンテナの電磁波主放射部である短絡部を
複数にしつつ、短絡部以外のアンテナエレメントを共通
化してある。すなわち、電磁波を放射する点が分散され
ていて、ＳＡＲが低減されていながら、導体板（平行エ
レメント）は共通（１つ）になっているので、導体板の
体積が確保され、従って、周波数帯域幅は、逆Ｆアンテ
ナを１つ設けた場合と同じである。1 is a diagram showing the configuration of an antenna according to an embodiment of the present invention. In the present embodiment, the plurality of short-circuited portions, which are the main electromagnetic wave emission portions of the inverted F antenna, are used, and the antenna elements other than the short-circuited portions are shared. That is, since the points that radiate electromagnetic waves are dispersed and the SAR is reduced, the conductor plate (parallel element) is common (one), so the volume of the conductor plate is secured, and therefore the frequency band is reduced. The width is the same as the case where one inverted F antenna is provided.
【００１４】地板１の縁に、この地板１と垂直に２つの
短絡部（主放射部）２ａおよび２ｂが突出している。短
絡部２ａと、短絡部２ｂとは、対向する位置に設けられ
ている。すなわち、地板１の対向する辺の端にそれぞれ
設けられている。短絡部２ａおよび２ｂの上端は、地板
１と平行な導体板（平行エレメント）３と接続されてい
る。導体板３における、短絡部２ａと導体板３との接続
点から距離ｄだけ離れた位置に、給電端子４ａが設けら
れ、短絡部２ｂと導体板３との接続点から距離ｄだけ離
れた位置に、給電端子４ｂが設けられている。給電端子
４ａおよび４ｂには、共通の給電部材５が接続されてい
る。給電部材５には、給電回路６から給電される。導体
板３には、短絡部２ａと接続された部分の横に切り欠き
３ａが設けられ、短絡部２ｂと接続された部分の横に切
り欠き３ｂが設けられている。Two short-circuited portions (main radiation portions) 2a and 2b project from the edge of the base plate 1 perpendicularly to the base plate 1. The short circuit portion 2a and the short circuit portion 2b are provided at positions facing each other. That is, they are provided at the ends of the opposite sides of the main plate 1, respectively. The upper ends of the short-circuit portions 2a and 2b are connected to a conductor plate (parallel element) 3 parallel to the base plate 1. In the conductor plate 3, the power supply terminal 4a is provided at a position away from the connection point between the short-circuit portion 2a and the conductor plate 3 by a distance d, and at a position away from the connection point between the short-circuit portion 2b and the conductor plate 3 by a distance d. Is provided with a power supply terminal 4b. A common power feeding member 5 is connected to the power feeding terminals 4a and 4b. Power is supplied to the power supply member 5 from the power supply circuit 6. The conductor plate 3 is provided with a notch 3a beside the portion connected to the short-circuited portion 2a, and is provided with a notch 3b beside the portion connected to the short-circuited portion 2b.
【００１５】上記構成によれば、短絡部（主放射部）が
２箇所設けられているので、放射する電波を分散させる
ことができ、ＳＡＲが低減される。同時に、導体板３
が、２箇所の短絡部２ａおよび２ｂと、２箇所の給電端
子４ａおよび４ｂに対して共通（１つ）となっている。
従って、アンテナ全体が占めるスペースが、従来の逆Ｆ
アンテナと同じである。それにも関わらず、１組の短絡
部および給電端子当たりの導体板３の体積が減少してい
ない。従って、周波数帯域幅も減少していない。According to the above structure, since the short-circuited portion (main radiation portion) is provided at two places, the radiated radio waves can be dispersed and the SAR can be reduced. At the same time, the conductor plate 3
Is common (one) to the two short-circuit parts 2a and 2b and the two power supply terminals 4a and 4b.
Therefore, the space occupied by the entire antenna can be
It is the same as the antenna. Nevertheless, the volume of the conductor plate 3 per set of short-circuit parts and power supply terminals is not reduced. Therefore, the frequency bandwidth has not decreased.
【００１６】図２ は、アンテナの共振周波数を図１に
示したアンテナより低く設定するために、導体板３に穴
３ｃを設けた例を示す図である。このようにすること
で、導体板３における電流が流れる経路を長くし、共振
周波数を低くしている。なお、以下の説明において、同
一の構成には同一の符号を付し、その説明を省略するも
のとする。FIG. 2 is a diagram showing an example in which a hole 3c is provided in the conductor plate 3 in order to set the resonance frequency of the antenna lower than that of the antenna shown in FIG. By doing so, the path through which the current flows in the conductor plate 3 is lengthened and the resonance frequency is lowered. In the following description, the same components will be denoted by the same reference numerals and the description thereof will be omitted.
【００１７】図３ は、４つの短絡部２ａ、２ｂ、２
ｃ、２ｄを設け、導体板３を２層化し、給電方法を電磁
結合による給電とした例を示す図である。図３（ａ）は
このアンテナの斜視図、図３（ｂ）は上面図、図３
（ｃ）は側面図である。短絡部２ａと２ｂとが対向する
位置に設けられ、短絡部２ｃと２ｄとが対向する位置に
設けられている。導体板３は、短絡部２ａ、２ｂ、２
ｃ、２ｄと接続された、地板１に近い側の層３ｄと、地
板１から遠い側の層３ｅとによって構成されている。層
３ｄは、”Ｘ”のような形状をしており、その端部で短
絡部２ａ、２ｂ、２ｃ、２ｄと接続され、その中心部で
層３ｅと接続されている。層３ｅには、穴３ｃが設けら
れている。導体板３の層３ｅの下部には、導体板３に給
電するための給電部材５ａが設けられている。導体板３
の層３ｅと給電部材５ａとは接触しておらず、給電部材
５ａは、電磁結合による給電を行う。給電部材５ａに
は、給電回路６から給電される。FIG. 3 shows four short-circuit parts 2a, 2b, 2
FIG. 3 is a diagram showing an example in which c and 2d are provided, the conductor plate 3 is made into two layers, and the power feeding method is power feeding by electromagnetic coupling. 3A is a perspective view of this antenna, FIG. 3B is a top view, and FIG.
(C) is a side view. The short-circuited portions 2a and 2b are provided at positions facing each other, and the short-circuited portions 2c and 2d are provided at positions facing each other. The conductor plate 3 has short-circuit parts 2a, 2b, 2
It is constituted by a layer 3d on the side closer to the main plate 1 and a layer 3e on the side farther from the main plate 1, which are connected to c and 2d. The layer 3d has a shape like "X", and is connected to the short-circuited portions 2a, 2b, 2c and 2d at its end and is connected to the layer 3e at its center. Hole 3c is provided in layer 3e. A power feeding member 5a for feeding power to the conductor plate 3 is provided below the layer 3e of the conductor plate 3. Conductor plate 3
The layer 3e and the power feeding member 5a are not in contact with each other, and the power feeding member 5a performs power feeding by electromagnetic coupling. Power is supplied from the power supply circuit 6 to the power supply member 5a.
【００１８】上記構成によれば、導体板３の多層化によ
り、導体板３における電流が流れる経路がさらに長くな
り、さらに共振周波数を低く設定することが可能になっ
ている。また、短絡部の数をさらに増加させることによ
り、さらにＳＡＲが低減されている。According to the above construction, the multilayered conductor plate 3 makes it possible to further lengthen the path through which the current flows in the conductor plate 3 and to set the resonance frequency lower. Further, the SAR is further reduced by further increasing the number of short-circuited portions.
【００１９】図４ は、２つの短絡部２ｅおよび２ｆを
設け、導体板３を２層化し、給電方法を電磁結合による
給電とした例を示す図である。図４（ａ）はこのアンテ
ナの斜視図、図４（ｂ）は上面図、図４（ｃ）は側面
図、図４（ｄ）は前面図である。導体板３は、短絡部２
ｅ、２ｆと接続された、地板１に近い側の層３ｆと、地
板１から遠い側の層３ｇとによって構成されている。層
３ｆは、「コ」の字型をしており、その端部で短絡部２
ｅ、２ｆと接続され、その中心部で層３ｇと接続されて
いる。層３ｇには、穴３ｃが設けられている。FIG. 4 is a diagram showing an example in which two short-circuit portions 2e and 2f are provided, the conductor plate 3 is made into two layers, and the power feeding method is electromagnetic coupling. 4 (a) is a perspective view of this antenna, FIG. 4 (b) is a top view, FIG. 4 (c) is a side view, and FIG. 4 (d) is a front view. The conductor plate 3 has a short-circuit part 2
e, a layer 3f on the side closer to the main plate 1 and a layer 3g on the side farther from the main plate 1, which are connected to the main plate 1. The layer 3f has a "U" shape, and has a short-circuit portion 2 at its end.
e, 2f, and the layer 3g at the center thereof. A hole 3c is provided in the layer 3g.
【００２０】図５ は、主放射部付近の電磁波の強度を
示すグラフである。このグラフにおける横軸は位置、縦
軸は電磁波の強度である。図５（ａ）は主放射部が１箇
所の場合、図５（ｂ）は主放射部が２箇所の場合のグラ
フである。また、図５（ｂ）は、２箇所の主放射部に、
同位相、同振幅で給電された場合のグラフである。１つ
のアンテナに主放射部を２箇所設ければ、主放射部が１
箇所の場合と比べて、主放射部がある位置における電磁
波の強度は１／２になる。FIG. 5 is a graph showing the intensity of electromagnetic waves near the main radiation part. The horizontal axis in this graph is the position, and the vertical axis is the electromagnetic wave intensity. FIG. 5A is a graph in the case where there is one main radiation portion, and FIG. 5B is a graph in the case where there are two main radiation portions. In addition, FIG. 5 (b) shows that the two main radiation parts are
It is a graph at the time of feeding with the same phase and the same amplitude. If two main radiation parts are provided in one antenna,
The intensity of the electromagnetic wave at the position where the main radiating portion is located is halved compared to the case of the location.
【００２１】[0021]
【発明の効果】本発明によれば、携帯電話内でアンテナ
が占有するスペースを増やさずに、ＳＡＲを低減させ、
かつ周波数帯域幅も確保できるアンテナを提供すること
ができる。According to the present invention, the SAR is reduced without increasing the space occupied by the antenna in the mobile phone,
In addition, it is possible to provide an antenna that can secure a frequency bandwidth.
【図１】 本発明の一実施形態におけるアンテナの構
成を示す図である。FIG. 1 is a diagram showing a configuration of an antenna according to an embodiment of the present invention.
【図２】 アンテナの共振周波数を図１に示したアン
テナより低く設定するために、導体板３に穴３ｃを設け
た例を示す図である。2 is a diagram showing an example in which a hole 3c is provided in a conductor plate 3 in order to set the resonance frequency of the antenna lower than that of the antenna shown in FIG.
【図３】 ４つの短絡部２ａ、２ｂ、２ｃ、２ｄを設
け、導体板３を２層化し、給電方法を電磁結合による給
電とした例を示す図である。FIG. 3 is a diagram showing an example in which four short-circuit portions 2a, 2b, 2c, and 2d are provided, the conductor plate 3 has two layers, and the power feeding method is electromagnetic coupling.
【図４】 ２つの短絡部２ｅおよび２ｆを設け、導体
板３を２層化し、給電方法を電磁結合による給電とした
例を示す図である。FIG. 4 is a diagram showing an example in which two short-circuit portions 2e and 2f are provided, the conductor plate 3 is made into two layers, and a power feeding method is power feeding by electromagnetic coupling.
【図５】 主放射部付近の電磁波の強度を示すグラフ
である。FIG. 5 is a graph showing the intensity of electromagnetic waves near the main radiation part.
【図６】 従来の一般的な逆Ｆアンテナの構成を示す
図である。FIG. 6 is a diagram showing a configuration of a conventional general inverted F antenna.
【図７】 従来の、ＳＡＲを低減させる方法を示す図
である。FIG. 7 is a diagram showing a conventional method for reducing SAR.
【図８】 アンテナの導体板の体積Ｖと、周波数帯域
幅Δｆとの関係を示すグラフである。FIG. 8 is a graph showing the relationship between the volume V of the conductor plate of the antenna and the frequency bandwidth Δf.
【符号の説明】
１ 地板
２ａ、２ｂ、２ｃ、２ｄ、２ｅ、２ｆ 短絡部（主放射
部）
３ 導体板（平行エレメント） ３ａ、３ｂ 切り欠
き
３ｃ 穴 ３ｄ、３ｅ、３ｆ、
３ｇ 層
４ａ、４ｂ 給電端子 ５、５ａ 給電部材
６ 給電回路 ｄ 距離[Description of Reference Signs] 1 base plate 2a, 2b, 2c, 2d, 2e, 2f short-circuited part (main radiating part) 3 conductor plate (parallel element) 3a, 3b cutout 3c hole 3d, 3e, 3f,
3g Layers 4a, 4b Feeding terminal 5, 5a Feeding member 6 Feeding circuit d Distance
Claims (4)
置されていることを特徴とするアンテナ。1. A plurality of main radiating parts for radiating electromagnetic waves, a conductor plate connected to all of these main radiating parts, and a feeding member for feeding power to the conductor plates, wherein the main radiating part is provided. , An antenna characterized in that they are arranged at a predetermined distance from each other.
部であることを特徴とする請求項１に記載のアンテナ。2. The antenna according to claim 1, wherein the main radiation portion is a short circuit portion of an inverted F antenna.
合による給電を行うことを特徴とする請求項１または２
に記載のアンテナ。3. The power feeding member feeds power to the conductor plate by electromagnetic coupling.
Antenna described in.
されていることを特徴とする請求項１から３のいずれか
に記載のアンテナ。4. The antenna according to claim 1, wherein the conductor plate is formed over a plurality of layers.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001316050A JP2003142935A (en) | 2001-10-12 | 2001-10-12 | Antenna |
| KR1020020044755A KR100640366B1 (en) | 2001-10-12 | 2002-07-29 | Inverted f antenna having reduced specific absorption rate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001316050A JP2003142935A (en) | 2001-10-12 | 2001-10-12 | Antenna |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2003142935A true JP2003142935A (en) | 2003-05-16 |
| JP2003142935A5 JP2003142935A5 (en) | 2005-06-23 |
Family
ID=19134119
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001316050A Pending JP2003142935A (en) | 2001-10-12 | 2001-10-12 | Antenna |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2003142935A (en) |
| KR (1) | KR100640366B1 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006035802A1 (en) * | 2004-09-28 | 2006-04-06 | Matsushita Electric Industrial Co., Ltd. | Radio machine antenna device and portable radio machine |
| EP1716711A2 (en) * | 2004-02-09 | 2006-11-02 | Motorola, Inc., A Corporation of the State of Delaware; | Slotted multiple band antenna |
| 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 |
| JP2011166601A (en) * | 2010-02-12 | 2011-08-25 | Toshiba Corp | Coupler device |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101005285B1 (en) * | 2008-07-18 | 2011-01-04 | 주식회사 이엠따블유 | Antenna for improving specific absorption rate |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5713162B2 (en) * | 1976-03-09 | 1982-03-16 | ||
| JPS5758081B2 (en) * | 1975-12-29 | 1982-12-08 | Hitoshi Tokumaru | |
| JPH02174405A (en) * | 1988-12-27 | 1990-07-05 | Toyota Central Res & Dev Lab Inc | Antenna for mobile body |
| JPH0821812B2 (en) * | 1988-12-27 | 1996-03-04 | 原田工業株式会社 | Flat antenna for mobile communication |
| JPH11317615A (en) * | 1997-12-11 | 1999-11-16 | Alcatel Cit | Multifrequency microstrip antenna and device provided with the same |
| 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 |
| WO2001018910A1 (en) * | 1999-09-03 | 2001-03-15 | Telefonaktiebolaget Lm Ericsson (Publ) | Antenna |
| JP2003142929A (en) * | 2001-10-12 | 2003-05-16 | Samsung Electronics Co Ltd | Antenna |
-
2001
- 2001-10-12 JP JP2001316050A patent/JP2003142935A/en active Pending
-
2002
- 2002-07-29 KR KR1020020044755A patent/KR100640366B1/en not_active IP Right Cessation
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5758081B2 (en) * | 1975-12-29 | 1982-12-08 | Hitoshi Tokumaru | |
| JPS5713162B2 (en) * | 1976-03-09 | 1982-03-16 | ||
| JPH02174405A (en) * | 1988-12-27 | 1990-07-05 | Toyota Central Res & Dev Lab Inc | Antenna for mobile body |
| JPH0821812B2 (en) * | 1988-12-27 | 1996-03-04 | 原田工業株式会社 | Flat antenna for mobile communication |
| JPH11317615A (en) * | 1997-12-11 | 1999-11-16 | Alcatel Cit | Multifrequency microstrip antenna and device provided with the same |
| 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 |
| WO2001018910A1 (en) * | 1999-09-03 | 2001-03-15 | Telefonaktiebolaget Lm Ericsson (Publ) | Antenna |
| JP2003142929A (en) * | 2001-10-12 | 2003-05-16 | Samsung Electronics Co Ltd | Antenna |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1716711A2 (en) * | 2004-02-09 | 2006-11-02 | Motorola, Inc., A Corporation of the State of Delaware; | Slotted multiple band antenna |
| EP1716711A4 (en) * | 2004-02-09 | 2007-12-26 | Motorola Inc | Slotted multiple band antenna |
| WO2006035802A1 (en) * | 2004-09-28 | 2006-04-06 | Matsushita Electric Industrial Co., Ltd. | Radio machine antenna device and portable radio machine |
| US7859467B2 (en) | 2004-09-28 | 2010-12-28 | Panasonic Corporation | Radio machine antenna device and portable radio machine |
| US8138980B2 (en) | 2004-09-28 | 2012-03-20 | Panasonic Corporation | Antenna device for radio apparatus and portable radio apparatus |
| WO2007055232A1 (en) * | 2005-11-08 | 2007-05-18 | Matsushita Electric Industrial Co., Ltd. | Composite antenna and portable terminal using same |
| US7830329B2 (en) | 2005-11-08 | 2010-11-09 | Panasonic Corporation | Composite antenna and portable terminal using same |
| JP4775381B2 (en) * | 2005-11-08 | 2011-09-21 | パナソニック株式会社 | Composite antenna and portable terminal using the same |
| WO2008023800A1 (en) * | 2006-08-24 | 2008-02-28 | Hitachi Kokusai Electric Inc. | Antenna device |
| US8193989B2 (en) | 2006-08-24 | 2012-06-05 | Hitachi Kokusai Electric Inc. | Antenna apparatus |
| JP2011166601A (en) * | 2010-02-12 | 2011-08-25 | Toshiba Corp | Coupler device |
| US8248308B2 (en) | 2010-02-12 | 2012-08-21 | Kabushiki Kaisha Toshiba | Coupler apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| KR100640366B1 (en) | 2006-10-30 |
| KR20030030844A (en) | 2003-04-18 |
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