【０００１】[0001]
【産業上の利用分野】本発明は、携帯電話用の周波数帯
域で使用される板状アンテナに係り、とくに周波数帯域
を広帯域化したものに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plate-shaped antenna used in a frequency band for mobile phones, and more particularly to a broadened frequency band.
【０００２】[0002]
【従来の技術】携帯電話用には、図６に示すような板状
の逆Ｆアンテナが使用されている。このアンテナの特徴
として、小型であること、ロー・プロフィールであるこ
と、垂直・水平両偏波を受信可能であること、および放
射効率がよいことがあげられる。この逆Ｆアンテナの形
状は、共振点での波長をλとすると、アンテナの幅Ｗと
長さＬとを、Ｗ＋Ｌ＝λ／４またはそれに近くなるよう
に設定する。2. Description of the Related Art For mobile phones, a plate-shaped inverted F antenna as shown in FIG. 6 is used. The characteristics of this antenna are its small size, low profile, ability to receive both vertical and horizontal polarized waves, and good radiation efficiency. The shape of the inverted F antenna is set such that the width W and the length L of the antenna are W + L = λ / 4 or close thereto, where λ is the wavelength at the resonance point.
【０００３】そして、そのインピーダンス特性（ＶＳＷ
Ｒ特性）は、図７に示すようなものとなる。すなわち、
このアンテナの帯域特性は、アンテナの幅Ｗに接地導体
板と板状放射導体板との間隔Ｈを乗じた積ＷＨに比例す
ることが知られている。The impedance characteristic (VSW
The R characteristic) is as shown in FIG. That is,
It is known that the band characteristic of the antenna is proportional to the product WH obtained by multiplying the width W of the antenna by the distance H between the ground conductor plate and the plate-shaped radiation conductor plate.
【０００４】実用的には、携帯電話の小型であることに
釣り合うようにアンテナ形状も小型化するために、静電
容量を装荷するなどを行っている。この結果、一般的な
帯域としてはＶＳＷＲ≦２の比帯域で３％程度を得てい
る。この結果として得られる放射パターンは、図８に示
すように、ブロードでしかも垂直・水平両偏波を受信可
能で携帯電話に好適な特性となっている。Practically, in order to reduce the size of the antenna to match the small size of the mobile phone, the capacitance is loaded. As a result, as a general band, about 3% is obtained in the ratio band of VSWR ≦ 2. The radiation pattern obtained as a result is broad and capable of receiving both vertical and horizontal polarizations, as shown in FIG. 8, and has a characteristic suitable for a mobile phone.
【０００５】この場合、静電容量の装荷は、図９に示す
ように放射導体の図における右端部をコの字型に折り曲
げて先端を接地導体板と対向させ、放射導体板と接地導
体板とによる平行板状態を形成し、静電容量を形成して
いる。In this case, the capacitance is loaded by bending the right end portion of the radiation conductor in a U-shape as shown in FIG. 9 so that the tip faces the ground conductor plate, and the radiation conductor plate and the ground conductor plate. A parallel plate state is formed by and the electrostatic capacitance is formed.
【０００６】[0006]
【発明が解決しようとする課題】このような静電容量の
装荷は、アンテナ形状を複雑化し、製造工程も煩雑にな
る。しかも、板状放射導体の端部に集中的に静電容量を
装荷して共振周波数を決定するようにしているから、製
造過程でのばらつきにより容量が変化すると共振点がず
れる。Such capacitance loading complicates the antenna shape and complicates the manufacturing process. Moreover, since the capacitance is intensively loaded on the end portion of the plate-shaped radiation conductor to determine the resonance frequency, if the capacitance changes due to variation in the manufacturing process, the resonance point shifts.
【０００７】この場合、比帯域が広ければ多少共振点が
ずれても感度の低下は防げるのであるが、比帯域が３％
と狭いため、共振点がずれたことにより感度の低下を招
くことになる。In this case, if the ratio band is wide, the sensitivity can be prevented from being lowered even if the resonance point is slightly deviated, but the ratio band is 3%.
Since the resonance point is narrow, the sensitivity is lowered due to the shift of the resonance point.
【０００８】本発明は上述の点を考慮してなされたもの
で、構造が簡単で小型であり、広帯域化が図れ、安定し
た特性を持ったアンテナを提供することを目的とする。The present invention has been made in view of the above points, and an object thereof is to provide an antenna having a simple structure, a small size, a wide band, and stable characteristics.
【０００９】[0009]
【課題を解決するための手段】上記目的達成のため、本
発明では、請求項１記載の、二つのアンテナを並設し得
る大きさの接地導体板、この接地導体板のほぼ半分の面
積部分に対向配置された第１の板状放射導体板、前記接
地導体板と前記第１の板状放射導体板とを接続する第１
の短絡導体、前記第１の板状放射導体板に給電するため
の給電線を有し、第１の周波数を共振点とする板状逆Ｆ
アンテナとして構成された給電アンテナと、前記接地導
体板の残りの部分に対向配置された第２の板状放射導体
板、前記接地導体板と前記第２の板状放射導体板とを接
続する第２の短絡導体を有し、前記第１の周波数に近接
した第２の周波数を共振点とする板状逆Ｌアンテナとし
て構成された無給電アンテナとをそなえた複共振アンテ
ナ、請求項２記載の、請求項１のアンテナにおける前記
接地導体板と前記板状放射導体板との間に、誘電体を挿
入した複共振アンテナ、および請求項３記載の、請求項
１のアンテナにおける、前記給電アンテナと無給電アン
テナとを同一フレキシブルプリント基板上に配置した複
共振アンテナを提供するものである。In order to achieve the above object, according to the present invention, a grounding conductor plate having a size capable of arranging two antennas in parallel with each other according to claim 1, and an area portion of a half of the grounding conductor plate. A first plate-shaped radiation conductor plate, which is arranged to face the first plate-shaped radiation conductor plate, and a first plate-shaped radiation conductor plate for connecting the ground conductor plate and the first plate-shaped radiation conductor plate
Plate-shaped inverted F having a short-circuit conductor, a power supply line for feeding power to the first plate-shaped radiation conductor plate, and having a first frequency as a resonance point.
A feeding antenna configured as an antenna, a second plate-shaped radiation conductor plate disposed opposite to the remaining portion of the ground conductor plate, and a first plate-shaped radiation conductor plate connecting the ground conductor plate and the second plate-shaped radiation conductor plate. The multi-resonant antenna having two short-circuit conductors and a parasitic antenna configured as a plate-shaped inverted L antenna having a second frequency close to the first frequency as a resonance point. A multi-resonant antenna in which a dielectric is inserted between the ground conductor plate and the plate-shaped radiation conductor plate in the antenna according to claim 1, and the feed antenna in the antenna according to claim 1 in claim 3. A multi-resonant antenna in which a parasitic antenna and a parasitic antenna are arranged on the same flexible printed circuit board.
【００１０】[0010]
【作用】請求項１記載の構成では、互いに近い周波数を
共振点とする給電アンテナと無給電アンテナとの協働に
よって複共振が得られ、この結果広帯域化される。In the structure according to the first aspect of the present invention, the multiple resonance is obtained by the cooperation of the feeding antenna and the parasitic antenna whose resonance points are frequencies close to each other, and as a result, the band is widened.
【００１１】請求項２記載の構成では、接地導体板と板
状放射導体板との間の間隙部に固体誘電体を挿入して両
導体板間に空気を配する場合よりも特性向上による寸法
縮小を図っている。According to the second aspect of the present invention, the size is improved by improving the characteristics as compared with the case where the solid dielectric is inserted in the gap between the ground conductor plate and the plate-shaped radiating conductor plate and air is arranged between the two conductor plates. We are trying to reduce it.
【００１２】請求項３記載の構成では、同一フレキシブ
ルプリント基板に給電アンテナと無給電アンテナとを配
置して両アンテナを同時製作するようにしている。According to the third aspect of the invention, the feeding antenna and the parasitic antenna are arranged on the same flexible printed circuit board so that both antennas are manufactured at the same time.
【００１３】[0013]
【発明の効果】請求項１記載のものでは、複共振により
広帯域特性を持った平面アンテナを提供することができ
る。しかも、このアンテナは、給電アンテナおよび無給
電アンテナはそれぞれ板状逆Ｆアンテナと同程度の簡単
な構造であるから、製造工程を複雑化することがない。According to the first aspect of the present invention, it is possible to provide a planar antenna having a wide band characteristic due to multiple resonance. Moreover, this antenna does not complicate the manufacturing process because the feeding antenna and the parasitic antenna have the same simple structure as the plate-like inverted F antenna.
【００１４】請求項２記載のものでは、固体誘電体を配
することにより空気を誘電体とする場合よりも小型のア
ンテナを提供することができる。According to the second aspect of the present invention, by disposing the solid dielectric, it is possible to provide a smaller antenna than that when air is used as the dielectric.
【００１５】請求項３記載のものでは、同一フレキシブ
ルプリント基板上に複共振特性を実現する両アンテナを
形成するため、両アンテナを所望特性を有するものとし
て製作することができる。According to the third aspect of the present invention, since both antennas that realize multiple resonance characteristics are formed on the same flexible printed circuit board, both antennas can be manufactured to have desired characteristics.
【００１６】[0016]
【実施例】図１は、本発明の一実施例を示した斜視図で
ある。この図において、板状放射導体板１はもう一つの
板状放射導体板２とともに、１枚の接地導体板３上に対
向配置される。この実施例では、二つの放射導体板１、
２は同一のフレキシブルプリント基板４上に形成され、
二つの放射導体板１、２と接地導体板３とを対向させる
ために、放射導体板１、２と接地導体板３との間に、固
体誘電体５をスペーサ代わりに配する。スペーサとして
は、空気をはじめとする誘電体を内蔵し、対向電極を所
定位置関係に保持する種々のものを用い得る。FIG. 1 is a perspective view showing an embodiment of the present invention. In this figure, a plate-shaped radiation conductor plate 1 and another plate-shaped radiation conductor plate 2 are arranged to face each other on one ground conductor plate 3. In this embodiment, two radiation conductor plates 1,
2 are formed on the same flexible printed circuit board 4,
In order to make the two radiation conductor plates 1 and 2 and the ground conductor plate 3 face each other, a solid dielectric 5 is arranged between the radiation conductor plates 1 and 2 and the ground conductor plate 3 as a spacer. As the spacer, various kinds of spacers having a built-in dielectric such as air and holding the counter electrode in a predetermined positional relationship can be used.
【００１７】そして板状放射導体板１は、幅Ｗ1 で長さ
Ｌ1 であって給電アンテナを構成するものであるから、
入力インピーダンスの整合状態が最良となる位置に給電
点６を有し、もう一つの板状放射導体板２は、幅Ｗ2 で
長さＬ2 であって無給電アンテナとして構成される。The plate-shaped radiation conductor plate 1 has a width W1 and a length L1 and constitutes a feeding antenna.
The feeding point 6 is provided at a position where the matching state of the input impedance is best, and the other plate-shaped radiation conductor plate 2 has a width W2 and a length L2 and is configured as a parasitic antenna.
【００１８】二つの板状放射導体板１、２は、短絡導体
板７、８によりともに接地導体板３に接続されている。The two plate-shaped radiation conductor plates 1 and 2 are both connected to the ground conductor plate 3 by short-circuit conductor plates 7 and 8.
【００１９】ここで、給電アンテナの共振周波数での波
長をλ1 、給電アンテナの幅をＷ1 、給電アンテナの長
さをＬ1 、そして、給電アンテナの共振周波数での波長
をλ2 、給電アンテナの幅をＷ2 、給電アンテナの長さ
をＬ2 とすると、 Ｗ1 ＋Ｌ1 ＝λ1/（４＋εr1/2） Ｗ2 ＋Ｌ2 ＝λ2/（４＋εr1/2） Ｗ1 ＋Ｌ1 ≠Ｗ2 ＋Ｌ2 となる。そして、両アンテナの間隔Ｇを含めて上記幅、
長さが、両アンテナにより適当な複共振を起こし広帯域
特性となるように調整されている。Here, the wavelength at the resonance frequency of the feeding antenna is λ1, the width of the feeding antenna is W1, the length of the feeding antenna is L1, the wavelength at the resonance frequency of the feeding antenna is λ2, and the width of the feeding antenna is If W2 and the length of the feeding antenna are L2, then W1 + L1 = .lambda.1 / (4 + .epsilon.r1/ 2 ) W2 + L2 = .lambda.2 / (4 + .epsilon.r1/ 2 ) W1 + L1.noteq.W2 + L2. And the width including the gap G between both antennas,
The length is adjusted so that both antennas cause appropriate double resonance and have wide band characteristics.
【００２０】図２は、図１の実施例の側面図であり、こ
の図２に示すように、フレキシブルプリント基板４と接
地導体板３との間に固体誘電体５が配され、固体誘電体
５に対して粘着シート７により固着されている。FIG. 2 is a side view of the embodiment shown in FIG. 1. As shown in FIG. 2, a solid dielectric 5 is arranged between a flexible printed circuit board 4 and a ground conductor plate 3, and a solid dielectric 5 is provided. It is fixed to 5 by an adhesive sheet 7.
【００２１】図３は、フレキシブルプリント基板４を展
開した状態を示したものである。図示のように、１枚の
フレキシブルプリント基板４上の図における左側に、二
つの板状放射導体板１および２を並設するとともに、右
側に接地導体板３を配する。二つの板状放射導体板１、
２と接地導体板３とを接続する短絡導体７、８は、その
端部の曲げ線Ｂに沿って直角に折り曲げられ、その結果
二つの板状放射導体板１、２と接地導体板３とが対向す
る。FIG. 3 shows a state in which the flexible printed board 4 is expanded. As shown in the figure, two plate-shaped radiation conductor plates 1 and 2 are arranged side by side on the left side in the figure on one flexible printed circuit board 4, and a ground conductor plate 3 is arranged on the right side. Two plate-shaped radiation conductor plates 1,
The short-circuit conductors 7 and 8 that connect 2 and the ground conductor plate 3 are bent at a right angle along the bending line B at the end thereof, and as a result, the two plate-shaped radiation conductor plates 1 and 2 and the ground conductor plate 3 are connected. Face each other.
【００２２】このように同一フレキシブルプリント基板
を用いて各導体板を形成すると、寸法誤差をきわめて小
さくすることができる。その結果、アンテナを構成した
ときの特性のばらつきを小さくすることができる。When each conductor plate is formed by using the same flexible printed board as described above, the dimensional error can be made extremely small. As a result, it is possible to reduce variations in characteristics when the antenna is constructed.
【００２３】図４は、図１ないし図３の実施例を金属箱
に設置したときの特性を示すもので、同図（ａ）はスミ
スチャート、同図（ｂ）はインピーダンス特性図であ
る。金属箱は高さ５０mm、幅６０mm、長さ１００mmであ
る。これらの図に示すように、本発明のアンテナでは、
複共振特性が実現され、ＶＳＷＲ≦２での比帯域は４．
５％となって広帯域化が図られている。FIG. 4 shows the characteristics when the embodiment of FIGS. 1 to 3 is installed in a metal box. FIG. 4A is a Smith chart and FIG. 4B is an impedance characteristic chart. The metal box is 50 mm high, 60 mm wide and 100 mm long. As shown in these figures, in the antenna of the present invention,
Multiple resonance characteristics are realized, and the ratio band for VSWR ≦ 2 is 4.
It has become 5%, and a wide band is achieved.
【００２４】図５は、放射パターンを示したものであ
り、同図（ａ）はアンテナの配置状態を示す図、同図
（ｂ）は同図（ａ）におけるＸ，Ｙ，Ｚ各軸の方向を示
す図、同図（ｃ）ないし（ｅ）は放射パターンを示す図
である。この放射パターンを図８に示すものと比べる
と、パターンの変形はなく、ブロードで垂直および水平
偏波成分に感度を持ったアンテナであることがわかる。FIG. 5 shows a radiation pattern. FIG. 5A is a diagram showing the arrangement of the antennas, and FIG. 5B is a diagram showing the X, Y, and Z axes in FIG. 5A. The figure which shows a direction, and the figure (c) thru | or (e) is a figure which shows a radiation pattern. Comparing this radiation pattern with that shown in FIG. 8, it can be seen that there is no deformation of the pattern and the antenna is broad and sensitive to vertical and horizontal polarization components.
【００２５】なお、上記の特性は、比誘電率が３．５５
の誘電体を用いて構成したときのものである。比誘電率
がより大きなものとすることにより全体形状をより小型
化することができる。The above-mentioned characteristics have a relative dielectric constant of 3.55.
It is the one when it is configured by using the dielectric material. By making the relative permittivity larger, the overall shape can be made smaller.
【図１】本発明の一実施例の斜視図。FIG. 1 is a perspective view of an embodiment of the present invention.
【図２】図１の実施例の側面図。2 is a side view of the embodiment of FIG.
【図３】図１の実施例におけるフレキシブルプリント基
板の展開図。3 is a development view of a flexible printed circuit board in the embodiment of FIG.
【図４】同図（ａ）は本発明の一実施例のインピーダン
ス特性を示すスミスチャート、同図（ｂ）は同じくＶＳ
ＷＲ特性図。FIG. 4A is a Smith chart showing impedance characteristics of an embodiment of the present invention, and FIG. 4B is the same VS chart.
WR characteristic diagram.
【図５】図４の実施例の放射パターンを示す図であり、
同図（ａ）はその配置状態を示す図、同図（ｂ）は同図
（ａ）におけるＸ，Ｙ，Ｚ各軸方向を示す図、同図
（ｃ）ないし（ｅ）は放射パターンを示す図。5 is a diagram showing a radiation pattern of the embodiment of FIG.
The figure (a) shows the arrangement state, the figure (b) shows the X, Y, and Z axis directions in the figure (a), and the figure (c) to (e) shows the radiation pattern. FIG.
【図６】従来の板状逆Ｆアンテナの斜視図。FIG. 6 is a perspective view of a conventional plate-shaped inverted F antenna.
【図７】図６のアンテナのＶＳＷＲ特性図。7 is a VSWR characteristic diagram of the antenna of FIG.
【図８】図６および図７のアンテナの放射パターンを示
す図あり、同図（ａ）はその配置状態を示す図、同図
（ｂ）は同図（ａ）におけるＸ，Ｙ，Ｚ各軸方向を示す
図、同図（ｃ）ないし（ｅ）は放射パターンを示す図。FIG. 8 is a diagram showing a radiation pattern of the antennas of FIGS. 6 and 7, where FIG. 8A is a diagram showing the arrangement state thereof, and FIG. 8B is each of X, Y, and Z in FIG. The figure which shows an axial direction, and the figure (c) thru | or (e) is a figure which shows a radiation pattern.
【図９】従来の容量装荷された板状逆Ｆアンテナの斜視
図。FIG. 9 is a perspective view of a conventional capacitively loaded plate-shaped inverted F antenna.
１ 給電アンテナの板状放射導体板 ２ 無給電アンテナの板状放射導体板 ３ 接地導体板 ４ フレキシブルプリント基板 ５ 誘電体 ６ 給電点 ７ 短絡導体 ８ 短絡導体 ９ 粘着シート Ｈ 板状放射導体板の高さ Ｌ 板状放射導体板の長さ Ｗ 板状放射導体板の幅 Ｇ 板状放射導体板相互間の間隔 1 Plate-shaped radiation conductor plate of feeding antenna 2 Plate-shaped radiation conductor plate of parasitic antenna 3 Ground conductor plate 4 Flexible printed circuit board 5 Dielectric 6 Feed point 7 Short-circuit conductor 8 Short-circuit conductor 9 Adhesive sheet H Height of plate-shaped radiation conductor plate Length L Length of plate-shaped radiation conductor plate W Width of plate-shaped radiation conductor plate G Distance between plate-shaped radiation conductor plates
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5274468AJPH07131234A (en) | 1993-11-02 | 1993-11-02 | Biresonance antenna |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5274468AJPH07131234A (en) | 1993-11-02 | 1993-11-02 | Biresonance antenna |
| Publication Number | Publication Date |
|---|---|
| JPH07131234Atrue JPH07131234A (en) | 1995-05-19 |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5274468APendingJPH07131234A (en) | 1993-11-02 | 1993-11-02 | Biresonance antenna |
| Country | Link |
|---|---|
| JP (1) | JPH07131234A (en) |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09232856A (en)* | 1996-02-22 | 1997-09-05 | Matsushita Electric Ind Co Ltd | Planar antenna |
| JPH1041736A (en)* | 1996-07-26 | 1998-02-13 | Saitama Nippon Denki Kk | Planar antenna |
| US5966097A (en)* | 1996-06-03 | 1999-10-12 | Mitsubishi Denki Kabushiki Kaisha | Antenna apparatus |
| WO2001018909A1 (en)* | 1999-09-09 | 2001-03-15 | Murata Manufacturing Co., Ltd. | Surface-mount antenna and communication device with surface-mount antenna |
| WO2001024316A1 (en)* | 1999-09-30 | 2001-04-05 | Murata Manufacturing Co., Ltd. | Surface-mount antenna and communication device with surface-mount antenna |
| WO2002013307A1 (en)* | 2000-08-07 | 2002-02-14 | Telefonaktiebolaget L M Ericsson | Antenna |
| WO2002067371A1 (en)* | 2001-02-22 | 2002-08-29 | Murata Manufacturing Co., Ltd. | Multi-resonance antenna |
| WO2002075853A1 (en)* | 2001-03-15 | 2002-09-26 | Matsushita Electric Industrial Co., Ltd. | Antenna apparatus |
| WO2002078123A1 (en)* | 2001-03-23 | 2002-10-03 | Telefonaktiebolaget L M Ericsson (Publ) | A built-in, multi band, multi antenna system |
| WO2002078124A1 (en)* | 2001-03-22 | 2002-10-03 | Telefonaktiebolaget L M Ericsson (Publ) | Mobile communication device |
| EP1263079A1 (en)* | 2001-05-25 | 2002-12-04 | Nokia Corporation | Mobile phone antenna |
| EP1143558A3 (en)* | 2000-03-30 | 2003-04-23 | Murata Manufacturing Co., Ltd. | Surface-mounted type antenna, method for adjusting and setting dual-resonance frequency thereof, and communication device including the surface-mounted type antenna |
| US6650294B2 (en) | 2001-11-26 | 2003-11-18 | Telefonaktiebolaget Lm Ericsson (Publ) | Compact broadband antenna |
| KR100414634B1 (en)* | 2000-04-11 | 2004-01-07 | 가부시키가이샤 무라타 세이사쿠쇼 | Surface-mounted antenna and wireless device incorporating the same |
| JP2005531171A (en)* | 2002-05-16 | 2005-10-13 | カトライン−ベルケ・カーゲー | Automotive roof antenna |
| EP1507313A3 (en)* | 2003-08-14 | 2005-12-21 | Nec Corporation | Antenna device for portable terminal |
| JP2006501699A (en)* | 2002-03-04 | 2006-01-12 | シーメンス インフォメイション アンド コミュニケイション モバイル エルエルシー | Broadband flat inverted F antenna |
| KR100578127B1 (en)* | 2002-05-30 | 2006-05-10 | 주식회사 선우커뮤니케이션 | Small patch antenna using planar inverted F antenna |
| JP2009130813A (en)* | 2007-11-27 | 2009-06-11 | Keiyo Engineering:Kk | Terrestrial digital broadcast receiving antenna and terrestrial digital broadcast receiving antenna apparatus |
| WO2011103710A1 (en)* | 2010-02-24 | 2011-09-01 | Laird Technologies Ab | An antenna arrangement for covering a frequency band |
| US8866689B2 (en) | 2011-07-07 | 2014-10-21 | Pulse Finland Oy | Multi-band antenna and methods for long term evolution wireless system |
| GB2486362B (en)* | 2009-08-27 | 2015-02-25 | Murata Manufacturing Co | Flexible substrate antenna and antenna device |
| US8988296B2 (en) | 2012-04-04 | 2015-03-24 | Pulse Finland Oy | Compact polarized antenna and methods |
| US9123990B2 (en) | 2011-10-07 | 2015-09-01 | Pulse Finland Oy | Multi-feed antenna apparatus and methods |
| US9203154B2 (en) | 2011-01-25 | 2015-12-01 | Pulse Finland Oy | Multi-resonance antenna, antenna module, radio device and methods |
| WO2015182016A1 (en)* | 2014-05-29 | 2015-12-03 | 株式会社東芝 | Antenna device, antenna device making method, and radio device |
| US9246210B2 (en) | 2010-02-18 | 2016-01-26 | Pulse Finland Oy | Antenna with cover radiator and methods |
| US9350081B2 (en) | 2014-01-14 | 2016-05-24 | Pulse Finland Oy | Switchable multi-radiator high band antenna apparatus |
| US9406998B2 (en) | 2010-04-21 | 2016-08-02 | Pulse Finland Oy | Distributed multiband antenna and methods |
| US9461371B2 (en) | 2009-11-27 | 2016-10-04 | Pulse Finland Oy | MIMO antenna and methods |
| US9484619B2 (en) | 2011-12-21 | 2016-11-01 | Pulse Finland Oy | Switchable diversity antenna apparatus and methods |
| US9531058B2 (en) | 2011-12-20 | 2016-12-27 | Pulse Finland Oy | Loosely-coupled radio antenna apparatus and methods |
| US9590308B2 (en) | 2013-12-03 | 2017-03-07 | Pulse Electronics, Inc. | Reduced surface area antenna apparatus and mobile communications devices incorporating the same |
| US9634383B2 (en) | 2013-06-26 | 2017-04-25 | Pulse Finland Oy | Galvanically separated non-interacting antenna sector apparatus and methods |
| US9647338B2 (en) | 2013-03-11 | 2017-05-09 | Pulse Finland Oy | Coupled antenna structure and methods |
| JP2017098872A (en)* | 2015-11-27 | 2017-06-01 | Ｎｅｃプラットフォームズ株式会社 | Antenna device, radio communication device, and antenna formation method |
| US9673507B2 (en) | 2011-02-11 | 2017-06-06 | Pulse Finland Oy | Chassis-excited antenna apparatus and methods |
| US9680212B2 (en) | 2013-11-20 | 2017-06-13 | Pulse Finland Oy | Capacitive grounding methods and apparatus for mobile devices |
| US9722308B2 (en) | 2014-08-28 | 2017-08-01 | Pulse Finland Oy | Low passive intermodulation distributed antenna system for multiple-input multiple-output systems and methods of use |
| US9761951B2 (en) | 2009-11-03 | 2017-09-12 | Pulse Finland Oy | Adjustable antenna apparatus and methods |
| US9906260B2 (en) | 2015-07-30 | 2018-02-27 | Pulse Finland Oy | Sensor-based closed loop antenna swapping apparatus and methods |
| US9917346B2 (en) | 2011-02-11 | 2018-03-13 | Pulse Finland Oy | Chassis-excited antenna apparatus and methods |
| US9948002B2 (en) | 2014-08-26 | 2018-04-17 | Pulse Finland Oy | Antenna apparatus with an integrated proximity sensor and methods |
| US9973228B2 (en) | 2014-08-26 | 2018-05-15 | Pulse Finland Oy | Antenna apparatus with an integrated proximity sensor and methods |
| US9979078B2 (en) | 2012-10-25 | 2018-05-22 | Pulse Finland Oy | Modular cell antenna apparatus and methods |
| US10069209B2 (en) | 2012-11-06 | 2018-09-04 | Pulse Finland Oy | Capacitively coupled antenna apparatus and methods |
| US10079428B2 (en) | 2013-03-11 | 2018-09-18 | Pulse Finland Oy | Coupled antenna structure and methods |
| JP2019075709A (en)* | 2017-10-17 | 2019-05-16 | 矢崎総業株式会社 | Film antenna |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09232856A (en)* | 1996-02-22 | 1997-09-05 | Matsushita Electric Ind Co Ltd | Planar antenna |
| US5966097A (en)* | 1996-06-03 | 1999-10-12 | Mitsubishi Denki Kabushiki Kaisha | Antenna apparatus |
| JPH1041736A (en)* | 1996-07-26 | 1998-02-13 | Saitama Nippon Denki Kk | Planar antenna |
| US6501425B1 (en) | 1999-09-09 | 2002-12-31 | Murrata Manufacturing Co., Ltd. | Surface-mounted type antenna and communication device including the same |
| WO2001018909A1 (en)* | 1999-09-09 | 2001-03-15 | Murata Manufacturing Co., Ltd. | Surface-mount antenna and communication device with surface-mount antenna |
| JP3596526B2 (en)* | 1999-09-09 | 2004-12-02 | 株式会社村田製作所 | Surface mounted antenna and communication device provided with the antenna |
| WO2001024316A1 (en)* | 1999-09-30 | 2001-04-05 | Murata Manufacturing Co., Ltd. | Surface-mount antenna and communication device with surface-mount antenna |
| US6323811B1 (en) | 1999-09-30 | 2001-11-27 | Murata Manufacturing Co., Ltd. | Surface-mount antenna and communication device with surface-mount antenna |
| AU749355B2 (en)* | 1999-09-30 | 2002-06-27 | Murata Manufacturing Co. Ltd. | Surface-mount antenna and communication device with surface-mount antenna |
| EP1143558A3 (en)* | 2000-03-30 | 2003-04-23 | Murata Manufacturing Co., Ltd. | Surface-mounted type antenna, method for adjusting and setting dual-resonance frequency thereof, and communication device including the surface-mounted type antenna |
| KR100414634B1 (en)* | 2000-04-11 | 2004-01-07 | 가부시키가이샤 무라타 세이사쿠쇼 | Surface-mounted antenna and wireless device incorporating the same |
| US6614400B2 (en) | 2000-08-07 | 2003-09-02 | Telefonaktiebolaget Lm Ericsson (Publ) | Antenna |
| WO2002013307A1 (en)* | 2000-08-07 | 2002-02-14 | Telefonaktiebolaget L M Ericsson | Antenna |
| CN100344029C (en)* | 2001-02-22 | 2007-10-17 | 株式会社村田制作所 | Multi-resonance antenna |
| WO2002067371A1 (en)* | 2001-02-22 | 2002-08-29 | Murata Manufacturing Co., Ltd. | Multi-resonance antenna |
| WO2002075853A1 (en)* | 2001-03-15 | 2002-09-26 | Matsushita Electric Industrial Co., Ltd. | Antenna apparatus |
| US6836248B2 (en) | 2001-03-15 | 2004-12-28 | Matsushita Electric Industrial Co., Ltd. | Antenna device |
| WO2002078124A1 (en)* | 2001-03-22 | 2002-10-03 | Telefonaktiebolaget L M Ericsson (Publ) | Mobile communication device |
| US6950065B2 (en) | 2001-03-22 | 2005-09-27 | Telefonaktiebolaget L M Ericsson (Publ) | Mobile communication device |
| WO2002078123A1 (en)* | 2001-03-23 | 2002-10-03 | Telefonaktiebolaget L M Ericsson (Publ) | A built-in, multi band, multi antenna system |
| EP1263079A1 (en)* | 2001-05-25 | 2002-12-04 | Nokia Corporation | Mobile phone antenna |
| US6707428B2 (en) | 2001-05-25 | 2004-03-16 | Nokia Corporation | Antenna |
| US6650294B2 (en) | 2001-11-26 | 2003-11-18 | Telefonaktiebolaget Lm Ericsson (Publ) | Compact broadband antenna |
| JP2006501699A (en)* | 2002-03-04 | 2006-01-12 | シーメンス インフォメイション アンド コミュニケイション モバイル エルエルシー | Broadband flat inverted F antenna |
| JP2005531171A (en)* | 2002-05-16 | 2005-10-13 | カトライン−ベルケ・カーゲー | Automotive roof antenna |
| KR100578127B1 (en)* | 2002-05-30 | 2006-05-10 | 주식회사 선우커뮤니케이션 | Small patch antenna using planar inverted F antenna |
| EP1507313A3 (en)* | 2003-08-14 | 2005-12-21 | Nec Corporation | Antenna device for portable terminal |
| US7342552B2 (en) | 2003-08-14 | 2008-03-11 | Nec Corporation | Antenna device for compound portable terminal |
| JP2009130813A (en)* | 2007-11-27 | 2009-06-11 | Keiyo Engineering:Kk | Terrestrial digital broadcast receiving antenna and terrestrial digital broadcast receiving antenna apparatus |
| GB2486362B (en)* | 2009-08-27 | 2015-02-25 | Murata Manufacturing Co | Flexible substrate antenna and antenna device |
| US9608319B2 (en) | 2009-08-27 | 2017-03-28 | Murata Manufacturing Co., Ltd. | Flexible substrate antenna and antenna device |
| US9761951B2 (en) | 2009-11-03 | 2017-09-12 | Pulse Finland Oy | Adjustable antenna apparatus and methods |
| US9461371B2 (en) | 2009-11-27 | 2016-10-04 | Pulse Finland Oy | MIMO antenna and methods |
| US9246210B2 (en) | 2010-02-18 | 2016-01-26 | Pulse Finland Oy | Antenna with cover radiator and methods |
| WO2011103710A1 (en)* | 2010-02-24 | 2011-09-01 | Laird Technologies Ab | An antenna arrangement for covering a frequency band |
| US9406998B2 (en) | 2010-04-21 | 2016-08-02 | Pulse Finland Oy | Distributed multiband antenna and methods |
| US9203154B2 (en) | 2011-01-25 | 2015-12-01 | Pulse Finland Oy | Multi-resonance antenna, antenna module, radio device and methods |
| US9673507B2 (en) | 2011-02-11 | 2017-06-06 | Pulse Finland Oy | Chassis-excited antenna apparatus and methods |
| US9917346B2 (en) | 2011-02-11 | 2018-03-13 | Pulse Finland Oy | Chassis-excited antenna apparatus and methods |
| US8866689B2 (en) | 2011-07-07 | 2014-10-21 | Pulse Finland Oy | Multi-band antenna and methods for long term evolution wireless system |
| US9123990B2 (en) | 2011-10-07 | 2015-09-01 | Pulse Finland Oy | Multi-feed antenna apparatus and methods |
| US9531058B2 (en) | 2011-12-20 | 2016-12-27 | Pulse Finland Oy | Loosely-coupled radio antenna apparatus and methods |
| US9484619B2 (en) | 2011-12-21 | 2016-11-01 | Pulse Finland Oy | Switchable diversity antenna apparatus and methods |
| US9509054B2 (en) | 2012-04-04 | 2016-11-29 | Pulse Finland Oy | Compact polarized antenna and methods |
| US8988296B2 (en) | 2012-04-04 | 2015-03-24 | Pulse Finland Oy | Compact polarized antenna and methods |
| US9979078B2 (en) | 2012-10-25 | 2018-05-22 | Pulse Finland Oy | Modular cell antenna apparatus and methods |
| US10069209B2 (en) | 2012-11-06 | 2018-09-04 | Pulse Finland Oy | Capacitively coupled antenna apparatus and methods |
| US9647338B2 (en) | 2013-03-11 | 2017-05-09 | Pulse Finland Oy | Coupled antenna structure and methods |
| US10079428B2 (en) | 2013-03-11 | 2018-09-18 | Pulse Finland Oy | Coupled antenna structure and methods |
| US9634383B2 (en) | 2013-06-26 | 2017-04-25 | Pulse Finland Oy | Galvanically separated non-interacting antenna sector apparatus and methods |
| US9680212B2 (en) | 2013-11-20 | 2017-06-13 | Pulse Finland Oy | Capacitive grounding methods and apparatus for mobile devices |
| US9590308B2 (en) | 2013-12-03 | 2017-03-07 | Pulse Electronics, Inc. | Reduced surface area antenna apparatus and mobile communications devices incorporating the same |
| US9350081B2 (en) | 2014-01-14 | 2016-05-24 | Pulse Finland Oy | Switchable multi-radiator high band antenna apparatus |
| WO2015182016A1 (en)* | 2014-05-29 | 2015-12-03 | 株式会社東芝 | Antenna device, antenna device making method, and radio device |
| JPWO2015182016A1 (en)* | 2014-05-29 | 2017-04-20 | 株式会社東芝 | ANTENNA DEVICE, ANTENNA DEVICE MANUFACTURING METHOD, AND RADIO DEVICE |
| US10505260B2 (en) | 2014-05-29 | 2019-12-10 | Kabushiki Kaisha Toshiba | Antenna device, method of manufacturing antenna device, and wireless device |
| US9948002B2 (en) | 2014-08-26 | 2018-04-17 | Pulse Finland Oy | Antenna apparatus with an integrated proximity sensor and methods |
| US9973228B2 (en) | 2014-08-26 | 2018-05-15 | Pulse Finland Oy | Antenna apparatus with an integrated proximity sensor and methods |
| US9722308B2 (en) | 2014-08-28 | 2017-08-01 | Pulse Finland Oy | Low passive intermodulation distributed antenna system for multiple-input multiple-output systems and methods of use |
| US9906260B2 (en) | 2015-07-30 | 2018-02-27 | Pulse Finland Oy | Sensor-based closed loop antenna swapping apparatus and methods |
| JP2017098872A (en)* | 2015-11-27 | 2017-06-01 | Ｎｅｃプラットフォームズ株式会社 | Antenna device, radio communication device, and antenna formation method |
| JP2019075709A (en)* | 2017-10-17 | 2019-05-16 | 矢崎総業株式会社 | Film antenna |
| US11121470B2 (en) | 2017-10-17 | 2021-09-14 | Yazaki Corporation | Film antenna |
| Publication | Publication Date | Title |
|---|---|---|
| JPH07131234A (en) | Biresonance antenna | |
| US6933905B2 (en) | RF card with conductive strip | |
| KR100283459B1 (en) | 2-frequency resonant antenna device | |
| JP4263820B2 (en) | Flat antenna for circular polarization | |
| US7843389B2 (en) | Complementary wideband antenna | |
| EP0637094B1 (en) | Antenna for mobile communication | |
| US4554549A (en) | Microstrip antenna with circular ring | |
| WO1994014210A1 (en) | Antenna apparatus | |
| JPH02174404A (en) | Plane antenna for mobile communication | |
| US8907860B2 (en) | Stand-alone multi-band antenna | |
| US20020021255A1 (en) | Antenna apparatus | |
| US20030210192A1 (en) | Broadband suspended plate antenna with multi-point feed | |
| US7126538B2 (en) | Microstrip antenna | |
| JP4473553B2 (en) | Multi-frequency antenna and configuration method thereof | |
| JP2777280B2 (en) | Antenna device | |
| JP3030590B2 (en) | Flat antenna | |
| JP2003051708A (en) | Antenna | |
| JP4373580B2 (en) | Dual-band antenna configuration method and dual-band antenna | |
| JPH07307613A (en) | Circular polarized wave microstrip antenna | |
| JP3064395B2 (en) | Microstrip antenna | |
| JPH0522028A (en) | Antenna device | |
| JPH1032422A (en) | Plane circuit type notched antenna | |
| JPH0774532A (en) | Microstrip antenna | |
| JP2006014152A (en) | Planar antenna | |
| JPH11177472A (en) | Diversity antenna and its constituting method |