JP4411047B2 - antenna - Google Patents
antenna Download PDFInfo
- Publication number
- JP4411047B2 JP4411047B2 JP2003342167A JP2003342167A JP4411047B2 JP 4411047 B2 JP4411047 B2 JP 4411047B2 JP 2003342167 A JP2003342167 A JP 2003342167A JP 2003342167 A JP2003342167 A JP 2003342167A JP 4411047 B2 JP4411047 B2 JP 4411047B2
- Authority
- JP
- Japan
- Prior art keywords
- antenna
- ground plate
- short
- antenna element
- element portion
- 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.)
- Expired - Lifetime
Links
- 230000003014 reinforcing effect Effects 0.000 claims description 18
- 238000005260 corrosion Methods 0.000 claims description 7
- 230000007797 corrosion Effects 0.000 claims description 7
- 239000002184 metal Substances 0.000 claims description 6
- 229910052751 metal Inorganic materials 0.000 claims description 6
- 229920001721 polyimide Polymers 0.000 claims description 4
- 239000009719 polyimide resin Substances 0.000 claims description 3
- 239000004020 conductor Substances 0.000 description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 229910001369 Brass Inorganic materials 0.000 description 3
- 239000010951 brass Substances 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- -1 fluororesin Polymers 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000005476 soldering Methods 0.000 description 2
- 229910000570 Cupronickel Inorganic materials 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004642 Polyimide Substances 0.000 description 1
- 239000004820 Pressure-sensitive adhesive Substances 0.000 description 1
- 229910001361 White metal Inorganic materials 0.000 description 1
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920001690 polydopamine Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
- 239000010969 white metal Substances 0.000 description 1
Description
本発明は、パソコン、ＰＤＡ（携帯型情報機器）、携帯電話、あるいはＶＩＣＳなどの情報端末機器等に内蔵させる多周波小型アンテナに関するものである。 The present invention relates to a multi-frequency small antenna incorporated in an information terminal device such as a personal computer, PDA (portable information device), mobile phone, or VICS.
近年、無線ＬＡＮあるいはＢｌｕｅｔｏｏｔｈ（登録商標）搭載のＰＤＡ等においては、アンテナの小型化、多周波化が進んでいる。そのため、切片状アンテナエレメントの数がますます増加し、これに伴い各エレメントの幅が狭くなるとともに厚さも薄くなり、アンテナエレメント部全体として小型且つ薄形化されているのが現状である。 In recent years, in a wireless LAN or Bluetooth ( registered trademark ) -mounted PDA or the like, antennas have become smaller and multi-frequency. For this reason, the number of section-like antenna elements is increasing, and accordingly, the width of each element is reduced and the thickness is also reduced, so that the entire antenna element portion is reduced in size and thickness.
しかも、アンテナを取付ける上記の機器においては、その取付スペースも狭小な立体空間になることがあり、単なる平面アンテナでは対応できな事態が生じる。したがって、図３に示すように、アンテナエレメントの少なくとも一部（（２ａ）または（２ｂ））をＬ字状グランド板（３）の平板面（３ａ）または（３ｂ）が含まれる水平面と交差させた、いわゆる立体形状のアンテナとして対応せざるを得なくなってきている。 In addition, in the above-described device for mounting an antenna, the mounting space may be a narrow three-dimensional space, and a situation that cannot be handled by a simple planar antenna occurs. Therefore, as shown in FIG. 3, at least a part of the antenna element ((2a) or (2b)) intersects the horizontal plane including the flat plate surface (3a) or (3b) of the L-shaped ground plate (3). In addition, it has become necessary to support a so-called three-dimensional antenna.
ところが、立体形状のアンテナは平面形状のアンテナと比較して、アンテナの製造工程において、作業者の取扱時の不注意等によりアンテナエレメント部が変形したり、さらには、輸送中に振動や衝撃等の外力により該エレメント部が変形してしまうという問題が生じ易い。しかも、このような変形は、正規の周波数が送受信できなくなるというアンテナ機能上の致命的トラブル（所謂、共振周波数ずれ）につながる。 However, in comparison with a planar antenna, a three-dimensional antenna is deformed due to carelessness during handling by an operator in the manufacturing process of the antenna, and further, vibration, impact, etc. during transportation. The problem is that the element part is deformed by the external force. Moreover, such a deformation leads to a fatal trouble (so-called resonance frequency shift) in the antenna function that the regular frequency cannot be transmitted and received.
そこで、この問題に対応するため、本出願人は先に、切片状エレメントからなるアンテナエレメント部と、平板部を含むグランド板（アース電極）とを短絡部材で接続した立体形状のアンテナにおいて、該エレメント部とグランド板の間に誘電体を挿入することを提案した（特願２００２−２８７８７７）。 Therefore, in order to cope with this problem, the applicant of the present invention firstly, in a three-dimensional antenna in which a short-circuit member is connected to an antenna element portion composed of a section-like element and a ground plate (earth electrode) including a flat plate portion, It has been proposed to insert a dielectric between the element portion and the ground plate (Japanese Patent Application No. 2002-287877).
しかし、この提案では、アンテナエレメント部の全周ないし全体が誘電体で固定されているわけではないので、未だ十分な強度が確保できないことが判明した。同時に、この提案では、アンテナエレメント部の腐食の問題については考慮されていない。さらに、アンテナエレメント部は、いわば短絡部材で片持ち状態にあるので、アンテナ全体としても形態安定性に欠けるきらいがある。 However, with this proposal, it has been found that the entire circumference or the whole of the antenna element portion is not fixed with a dielectric, so that sufficient strength cannot be secured yet. At the same time, this proposal does not consider the problem of corrosion of the antenna element portion. Furthermore, since the antenna element portion is in a cantilever state with a short-circuit member, the antenna as a whole may not be stable in form.
本発明の課題は、上述の記の狭小立体空間への取付に適した立体形状のアンテナ（以下、“アンテナ”）に関して、短絡部材で片持ち状態にあるアンテナエレメント部の強度向上とアンテナ全体の形態安定化を図ることにある。 An object of the present invention is to improve the strength of an antenna element portion that is in a cantilever state with a short-circuit member and to improve the overall antenna with respect to a three-dimensional antenna (hereinafter referred to as “antenna”) suitable for mounting in a narrow three-dimensional space described above . The purpose is to stabilize the form.
本発明者等は、図３に示すようなアンテナのアンテナエレメント部、短絡部材およびグランド板に亘って、それらの両面をシート状の強化部材で被覆して、片持ち状態にあるアンテナエレメント部を、該グランド部および該短絡部材と一体的に補強することにより、該エレメント部の強度向上、さらにはアンテナ全体としての形態安定化を実現するに至った。 The present inventors cover the antenna element portion of the antenna as shown in FIG. 3, the short-circuit member and the ground plate, and cover both surfaces thereof with a sheet-like reinforcing member, so that the antenna element portion in a cantilever state is provided. by reinforcing the ground portion and the short-circuit member integrally with the strength of the element portion improves, more I came to realize the form weaker Joka of the antenna as a whole.
本発明によれば、アンテナ部全体、すなわちアンテナエレメント部、短絡部材およびグランド板に亘って、それらの両面がシート状の強化部材で被覆される。その結果、従来のように切片状エレメントが曲がる懸念がなくなるので、この曲がりに起因する共振周波数ずれから生じる通信トラブルが解消できる。さらに、アンテナエレメント部が、該短絡部材とグランド板と一体的に補強されるので、アンテナ全体の強度（形態安定性）が大幅に向上する。また、該強化部材として耐腐食性部材を選択することにより、アンテナエレメント部の腐食も併せて防止できる。 According to the present invention, the entire antenna unit, namely the antenna element section, over the short-circuiting member and the ground plate, they both surfaces are coated with a reinforcing member sheet. As a result, since the conventional slice-shaped element is bent concerns so there is no communication trouble can be solved arising from the resonance frequency shift caused by the bending. In addition, the antenna element portion, since it is the short-circuit member and the ground plate integrally reinforced the strength of the entire antenna (shape stability) is greatly improved. Further, by selecting a corrosion resistant member as the reinforcing member can be prevented also to corrosion of the antenna element section.
以下、本発明を２周波対応のアンテナの例について、添付図面を参照しながら説明する。
図１は、本発明に係るアンテナの表面から見た斜視図である。
図２は、本発明に係るアンテナの裏面から見た斜視図である。
図３は、図１〜図２におけるアンテナエレメント部の詳細を示す斜視図である。
Hereinafter, the present invention will be described with respect to an example of a dual-frequency antenna with reference to the attached drawings.
FIG. 1 is a perspective view seen from the surface of an antenna according to the present invention.
FIG. 2 is a perspective view of the antenna according to the present invention as seen from the back side.
FIG. 3 is a perspective view showing details of the antenna element portion in FIGS.
図１において、（１）は板金から得られたアンテナ、（２）はアンテナエレメント部（放射電極部）で、高周波用の第１エレメント（２ａ）および低周波用の第２エレメント（２ｂ）とからなっている。これらのエレメントはいずれも切片状である。（３）はグランド板で、互いに直角に交差する平板面（３ａ）、（３ｂ）によりＬ字状に構成されている。（４）はアンテナエレメント部（２）とグランド板（３）とを電気的に接続する短絡部材、（５）は、アンテナエレメント部（２）、短絡部材（４）、およびグランド板（３）間に亘って被覆された強化部材である。 In FIG. 1, (1) is an antenna obtained from a sheet metal , and (2) is an antenna element part (radiating electrode part), which includes a first element (2a) for high frequency and a second element (2b) for low frequency. It is made up of. Each of these elements is in the form of a slice. (3) is a ground plate, and is configured in an L shape by flat plate surfaces (3a) and (3b) intersecting at right angles. (4) is a short-circuit member that electrically connects the antenna element portion (2) and the ground plate (3), and (5) is an antenna element portion (2), the short-circuit member (4), and the ground plate (3). It is a reinforcing member coated in between.
図１に示したアンテナの裏側には、図２に示すように、同様の強化部材（５）がアンテナエレメント部（２）、短絡部材（４）、およびグランド板（３）の平板
面（３ａ）間に亘って被覆されている。併せて、この側には給電線としての高周波同軸ケーブル（６）が付設されている。（Ｓ1）は該ケーブルの内部導体インピーダンス整合点、（Ｓ２）は該ケーブルの外部導体インピーダンス整合点（アースポイント）である。
On the back side of the antenna shown in FIG. 1, as shown in FIG. 2, a similar reinforcing member (5) has a flat plate surface (3a) of the antenna element portion (2), the short-circuit member (4), and the ground plate (3). ). In addition, a high-frequency coaxial cable (6) as a feeder is attached to this side. (S1) is an internal conductor impedance matching point of the cable, and (S2) is an external conductor impedance matching point (earth point) of the cable.
図１〜図２のアンテナエレメント部（２）は短絡部材（４）を介してグランド板（３）に隣接して片持ち状態で配置され、その詳細は図３に示されている。該図において、第１エレメント（２ａ）はグランド板（３）の平板面（３ａ）に、平板面（３ａ）が含まれる水平面と同一面で短絡部（４）を介して保持され、且つグランド板（３）の他方の平板面（３ｂ）が含まれる水平面と交差している。他方、第２エレメント（２ｂ）は第１エレメント（２ａ）の終端部（図に向かって左端）にＬ字形状で接続し、第１エレメント（２ａ）と平行でその開始部方向に延出している。この第２エレメント（２ｂ）は、グランド板（３）の平板面（３ａ）が含まれる水平面と交差するが、グランド板（３）の平板面（３ｂ）が含まれる水平面とは面平行の関係にある。このようにしてアンテナ全体が立体形状となる。 The antenna element portion (2) of FIGS. 1 to 2 is disposed in a cantilever state adjacent to the ground plate (3) via the short-circuit member (4), and details thereof are shown in FIG. In the figure , the first element (2a) is held on the flat plate surface (3a) of the ground plate (3) through the short-circuit portion (4) on the same plane as the horizontal plane including the flat plate surface (3a), and the ground plate (3a). It intersects the horizontal plane including the other flat plate surface (3b) of the plate (3). On the other hand, the second element (2b) is connected to the terminal portion (the left end in the figure) of the first element (2a) in an L shape, and extends in the direction of the start portion in parallel with the first element (2a). The The second element (2b) of this, but intersects the horizontal plane that contains the flat plate surface of the ground plate (3) (3a) is a ground plate flat surface (3b) of the surface parallel to the horizontal plane that includes the (3) There is a relationship. In this way, the entire antenna has a three-dimensional shape.
さらに、本発明について詳細に説明する。
本発明で用いる強化部材（５）としては、アンテナエレメント部（２）の小型且つ薄膜化を図る意味で極力高強度の部材が好ましい。さらにエレメント部（２）の腐食防止のため、強化部材を耐腐食性部材で構成することがより好ましい。具体的には、ＡＢＳ樹脂、フッ素樹脂、あるいはポリエチレン、ポリイミド等の熱可塑性樹脂からなる厚さが０.０１ｍｍ〜０.５ｍｍのシートが挙げられるが、そのなかでも取分けポリイミド樹脂シートが好ましい。このときの強化部材（５）の縦横寸法は、少なくともアンテナエレメント部（２）のほぼ全体をカバーする大きさであればよい。その際、アンテナエレメント部（２）全体を袋状に被覆することが望ましい。このためには、チューブ状あるいは袋状の強化部材を採用すればよい。そして、アンテナエレメント部（２）に強化部材（５）を被覆・密着させるには、アンテナエレメント部（２）にチューブないし袋状の強化部材（５）を被覆した後、ドライヤー等の加熱具にて溶融・熱収縮させるか、接着材等で接着すればよい。
Further, the present invention will be described in detail.
As the reinforcing member (5) used in the present invention, a member having high strength as much as possible is preferable in order to make the antenna element portion (2) small and thin. Furthermore, in order to prevent corrosion of the element portion (2) , it is more preferable that the reinforcing member is made of a corrosion resistant member. Specifically, a sheet made of ABS resin, fluororesin, or thermoplastic resin such as polyethylene, polyimide, etc., having a thickness of 0.01 mm to 0.5 mm can be mentioned. Among them, a polyimide resin sheet is particularly preferable. The vertical and horizontal dimensions of the reinforcing member (5) at this time may be a size that covers at least almost the entire antenna element portion (2). At that time, it is desirable to cover the entire antenna element portion (2) in a bag shape. For this purpose, a tube-shaped or bag-shaped reinforcing member may be employed. In order to cover and closely attach the reinforcing member (5) to the antenna element part (2), the antenna element part (2) is covered with a tube or bag-shaped reinforcing member (5), and then heated to a heating tool such as a dryer. It may be melted and heat shrunk or bonded with an adhesive or the like.
このような被覆により、図１〜図３にも示されるように短絡部材（４）で言わば片持ち状態にあるアンテナエレメント部（２）は、短絡部材（４）およびグランド板（３）と一体的に補強されるので、アンテナ全体の強度が大幅に向上する。 Together by such a coating, the antenna element portion so to speak is cantilevered at short-circuit member (4) as also shown in FIGS 3 (2), the short-circuiting member (4) and the ground plate (3) Therefore, the strength of the entire antenna is greatly improved.
他方、切片状の各エレメント（２ａ）または（２ｂ）について言えば、その長さは採択しようとする波長の概ね１／４の長さに設定し、また切片の幅は０．５ｍｍ〜５ｍｍの範囲から適宜採択する。また、厚さについては格段の制約はないが、強化部材（５）で補強されているので、０.０５ｍｍ〜１ｍｍで十分である。その材質としては、洋白（白銅）、銅、鉄、黄銅等の導電性の金属が望ましい。 On the other hand, for each of the section-like elements (2a) or (2b), the length is set to approximately 1/4 of the wavelength to be adopted, and the section width is 0.5 mm to 5 mm. Adopted appropriately from the scope. Further, although not much restriction for thickness, because it is reinforced by the reinforcing member (5), is sufficient 0.05 mm to 1 mm. The material is preferably a conductive metal such as white (white copper), copper, iron, or brass.
また、グランド板（３）については、その材質は洋白（白銅）、銅、鉄、黄銅等の導電性の金属で構成すればよい。安定した動作を可能とするため、グランド板（３）の必要最低面積（ｍｍ２）はλ／４＊λ／４（λは波長）以上を満足することが望ましい。従って、より安定した動作を望む場合には、スペースの許す限り、グランド板（３）の面積を大きくすることが望ましい。 In addition, the ground plate (3) may be made of a conductive metal such as white (brass), copper, iron, or brass. In order to enable stable operation, it is desirable that the necessary minimum area (mm2) of the ground plate (3) satisfies λ / 4 * λ / 4 (λ is a wavelength) or more. Therefore, when more stable operation is desired, it is desirable to increase the area of the ground plate (3) as long as space permits.
さらに、高周波同軸ケーブル（６）としては、公知のフッ素樹脂被覆等の高周波同軸ケーブルが採用される。高周波同軸ケーブル（６）を２つのインピーダンス整合点（Ｓ１、Ｓ２）に接続するには、ハンダ付あるいは超音波接続等を利用すればよい。 Further, as the high-frequency coaxial cable (6), a known high-frequency coaxial cable such as a fluororesin coating is employed. In order to connect the high-frequency coaxial cable (6) to the two impedance matching points (S1, S2), soldering or ultrasonic connection may be used.
以上の説明は、アンテナエレメント部（２）が２周波用のアンテナについて、アンテナエレメント部（２）と短絡部材（４）も、一体化された例で示したが、これらは必ずしも一体化する必要はなく、別体部材で構成してもよい。さらに、グランド板（３）についても、短絡部材（４）とアンテナエレメント部（２）と一体化された例で示したが、設置する情報端末機器内部の別体の金属製筐体等導電部材部を利用してもよい。 The above explanation, the antenna for dual-band antenna element section (2) is, antenna element section (2) and the short-circuit member (4) also showed in integrated example, they necessarily integrated It is not necessary and may be constituted by a separate member. Furthermore, for the ground plate (3) it has been shown by being one conjugated shorting member (4) the antenna element section (2) Example, metal housing such as a conductive separate internal information terminal equipment to be installed You may utilize a member part.
以下に、図１〜図３の態様において、情報端末機器であるパソコン内蔵用のアンテナの具体例を示す。 In the following, a specific example of a personal computer built-in antenna that is an information terminal device in the modes of FIGS.
先ず、導電性金属として０．３ｍｍの厚さの洋白を用いて、グランド板（３）、短絡部材（４）およびアンテナエレメント部（２）が一体化された構造体（図３）を得た。この場合、グランド板（３）の長さは１５ｍｍ、幅は３０ｍｍとし、該グランド板（３）と接合する短絡部材（４）の長さは５ｍｍ、突出幅は３.５ｍｍとした。エレメント（２ａ）については、高周波用（５ＧＨｚ帯）の波長に対応する幅１．５ｍｍ、長さ１４ｍｍの切片状体をグランド板（３）と平行に配置した。他方、エレメント（２ｂ）は低周波用（２．４ＧＨｚ帯）の波長に対応する幅１．５ｍｍ、長さ３０ｍｍの切片状体であり、高周波用エレメント（２ａ）の終端部から５．０mmの間隔をあけてグランド板（３ａ）が含まれる水平面と直交（９０度）するように配置した。さらに、アンテナエレメント部（２）、短絡部材(４)、およびグランド板（３）間に亘って、それらの両面を粘着剤付のポリイミド樹脂（商品名「ニカフレックス」、ニッカン工業株式会社製）からなる縦１０ｍｍ、横２０ｍｍ、厚さ０．１５ｍｍのシート状の強化部材（５）を袋状にしてから加熱プレスにより被覆した。 First, a structure (FIG. 3) in which the ground plate (3), the short-circuit member (4), and the antenna element part (2) are integrated is obtained using a white metal having a thickness of 0.3 mm as the conductive metal. It was. In this case, the length of the ground plate (3) was 15 mm and the width was 30 mm, the length of the short-circuit member (4) joined to the ground plate (3) was 5 mm, and the protruding width was 3.5 mm. For the element (2a), a sliced body having a width of 1.5 mm and a length of 14 mm corresponding to the wavelength for high frequency (5 GHz band) was arranged in parallel with the ground plate (3). On the other hand, the element (2b) is a sliced body having a width of 1.5 mm and a length of 30 mm corresponding to the wavelength for low frequency (2.4 GHz band), and is 5.0 mm from the end of the high frequency element (2a). It arrange | positioned so that it might orthogonally cross (90 degree | times) with the horizontal surface containing a ground board (3a) at intervals. Furthermore, across both the antenna element part (2), the short-circuit member (4), and the ground plate (3), a polyimide resin with a pressure-sensitive adhesive (trade name “Nikaflex”, manufactured by Nikkan Kogyo Co., Ltd.) A sheet-shaped reinforcing member (5) having a length of 10 mm, a width of 20 mm, and a thickness of 0.15 mm was formed into a bag shape and then covered with a hot press.
最後に、インピーダンス整合点（Ｓ１、Ｓ２）に外径０．９３ｍｍ、導体径０．２４ｍｍ、のフッ素樹脂（ＰＦＡ）同軸ケーブル（６）の内部導体および外部導体をそれぞれハンダにより接続することにより、パソコン内蔵用アンテナ（１）が完成した。 Finally, by connecting the inner conductor and the outer conductor of the fluororesin (PFA) coaxial cable (6) having an outer diameter of 0.93 mm and a conductor diameter of 0.24 mm to the impedance matching points (S1, S2) respectively by soldering, The personal computer built-in antenna (1) was completed.
以上、本発明をパソコンに内蔵する２周波対応のアンテナの例で説明したが、本発明の思想の範囲内であれば、種々の変更および応用が可能であることは言うまでもない。 The present invention has been described above with an example of a two-frequency antenna built in a personal computer, but it goes without saying that various modifications and applications are possible within the scope of the idea of the present invention.
本発明のアンテナは、エレメントの変形が防止でき、耐久性が向上するので、パソコンの他に、ＰＤＡ、携帯電話、あるいはＶＩＣＳ等の各種情報端末機器のみならず、通信機能を有した情報家電、自動車関連機器へも同様に利用できる。 The antenna of the present invention can prevent deformation of the element and improve durability. In addition to personal computers, various information terminal devices such as PDAs, mobile phones, and VICS, as well as information appliances having communication functions, It can be used for automobile-related equipment as well.
１ アンテナ
２ アンテナエレメント部
２ａ 第１エレメント（高周波用）
２ｂ 第２エレメント（低周波用）
３ グランド板
３ａ 、３ｂ グランド板を構成する平板面
４ 短絡部材
５ 強化部材
６ 高周波同軸ケーブル
Ｓ１ 高周波同軸ケーブルの内部導体インピーダンス整合点
Ｓ２ 高周波同軸ケーブルの
外部導体インピーダンス整合
DESCRIPTION OF SYMBOLS 1 Antenna 2 Antenna element part 2a 1st element (for high frequency)
2b 2nd element (for low frequency)
3 Ground plate 3a, 3b Flat plate surface 4 constituting ground plate Short-circuit member 5 Reinforcing member 6 High-frequency coaxial cable
S1 Internal conductor impedance matching point of high-frequency coaxial cable S2 External conductor impedance matching of high-frequency coaxial cable
Claims (6)
ａ．該アンテナエレメント部は、第１および第２エレメントを含み、
ｂ．第１エレメントは、該グランド板の一方の平板面に、該平板面が含まれる水平面と同一面で該短絡部を介して保持され、且つ該グランド板の他方の平板面が含まれる水平面と交差し；
ｃ．第２エレメントは、第１エレメントの終端部にＬ字形状で接続され、該グランド板の一方の平板面が含まれる水平面と交差するが、該グランド板の他方の平板面が含まれる水平面とは面平行の関係にあり；そして、
ｄ．該アンテナエレメント部、短絡部材および該グランド部に亘って、それらの両面にシート状の強化部材が被覆されて、該片持ち状態にあるアンテナエレメント部が該グランド部および該短絡部材と一体的に補強されている
ことを特徴とするアンテナ。 A three-dimensional antenna made of sheet metal, in which an antenna element portion is held in a cantilever state via a short-circuit portion on a ground plate formed in an L shape by flat surfaces intersecting at right angles to each other,
a. The antenna element portion includes first and second elements,
b. The first element is held on one flat plate surface of the ground plate through the short-circuit portion on the same plane as the horizontal plane including the flat plate surface, and intersects the horizontal plane including the other flat plate surface of the ground plate. And
c. The second element is connected to the terminal portion of the first element in an L shape and intersects with a horizontal plane including one flat plate surface of the ground plate. What is a horizontal plane including the other flat plate surface of the ground plate? In a plane-parallel relationship; and
d. The antenna element portion, the short-circuit member, and the ground portion are covered with sheet-like reinforcing members on both sides thereof, and the antenna element portion in the cantilever state is integrated with the ground portion and the short-circuit member. An antenna characterized by being reinforced.
The antenna according to any one of claims 1 to 5, wherein the antenna element portion corresponds to a multi-frequency of two or more frequencies.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2003342167A JP4411047B2 (en) | 2003-09-30 | 2003-09-30 | antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2003342167A JP4411047B2 (en) | 2003-09-30 | 2003-09-30 | antenna |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2005110011A JP2005110011A (en) | 2005-04-21 |
| JP4411047B2 true JP4411047B2 (en) | 2010-02-10 |
Family
ID=34536544
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2003342167A Expired - Lifetime JP4411047B2 (en) | 2003-09-30 | 2003-09-30 | antenna |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4411047B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4747988B2 (en) * | 2006-08-07 | 2011-08-17 | 株式会社デンソー | In-vehicle antenna device and manufacturing method thereof |
-
2003
- 2003-09-30 JP JP2003342167A patent/JP4411047B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JP2005110011A (en) | 2005-04-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7226293B2 (en) | Built-in type antenna assembly of wireless communication terminal | |
| JP4053566B2 (en) | Antenna module and wireless electronic device including the same | |
| WO2005011053A1 (en) | Antenna arrangement for connecting an external device to a radio device | |
| JP4503618B2 (en) | Mobile device | |
| JP5072443B2 (en) | Electronic device and manufacturing method thereof | |
| JP4880439B2 (en) | Antenna element | |
| JP2008160411A (en) | Antenna device and portable radio device | |
| JP2013530623A (en) | Antenna with planar conductive element | |
| JP2004128740A (en) | Radiation electrode element and multi-frequency antenna constituted thereof | |
| US10256542B2 (en) | Chip antenna and method of manufacturing the same | |
| JP4411047B2 (en) | antenna | |
| US7106259B2 (en) | Planar inverted-F antenna | |
| JP2010245895A (en) | Mobile terminal | |
| US9030365B2 (en) | Wireless communication device | |
| JP2004200775A (en) | Dual band antenna | |
| JP4102778B2 (en) | Antenna structure and communication device | |
| JP2005318333A (en) | Antenna | |
| JP2005124003A (en) | Antenna and installation method of flat antenna | |
| JP4381775B2 (en) | Planar antenna | |
| JP2007129597A (en) | Multi-frequency antenna | |
| JP2005159908A (en) | Antenna | |
| KR20160063156A (en) | Antenna structure and manufacturing method thereof | |
| JP2005217811A (en) | Multifrequency radiation electrode element and multifrequency antenna including the element | |
| JP4594368B2 (en) | Portable wireless device | |
| JP2010141723A (en) | Portable wireless apparatus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20060915 |
|
| A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20070830 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20071030 |
|
| A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20071227 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20080404 |
|
| A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20080527 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20080828 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20090312 |
|
| A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20090327 |
|
| TRDD | Decision of grant or rejection written | ||
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20090902 |
|
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 |
|
| R155 | Notification before disposition of declining of application |
Free format text: JAPANESE INTERMEDIATE CODE: R155 |
|
| A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20091116 |
|
| R150 | Certificate of patent or registration of utility model |
Free format text: JAPANESE INTERMEDIATE CODE: R150 Ref document number: 4411047 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20121120 Year of fee payment: 3 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20121120 Year of fee payment: 3 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20151120 Year of fee payment: 6 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| EXPY | Cancellation because of completion of term |