JP2010062979A - Non-directional antenna - Google Patents

Non-directional antenna Download PDF

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JP2010062979A
JP2010062979A JP2008228123A JP2008228123A JP2010062979A JP 2010062979 A JP2010062979 A JP 2010062979A JP 2008228123 A JP2008228123 A JP 2008228123A JP 2008228123 A JP2008228123 A JP 2008228123A JP 2010062979 A JP2010062979 A JP 2010062979A
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antenna element
rectangular shape
dielectric substrate
antenna
horizontal
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JP4825249B2 (en
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Hiroki Hagiwara
弘樹 萩原
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Nihon Dengyo Kosaku Co Ltd
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Nihon Dengyo Kosaku Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a non-directional antenna which is simpler in structure than that of a conventional non-directional antenna, and is made thin in diameter. <P>SOLUTION: The non-directional antenna includes: a dielectric substrate in a rectangular shape; ground conductors formed on inner four faces of the rectangular shape; a horizontal polarization antenna element formed on outer four faces of the rectangular shape; a vertical polarization antenna element formed on outer four faces of the rectangular shape; a pair of horizontal polarization parasitic elements disposed on the horizontal polarization antenna element; and a vertical polarization parasitic element disposed on the vertical polarization antenna element. Each of the horizontal polarization antenna element and the vertical polarization antenna element is one patch antenna element formed while being folded on the outer four faces of the rectangular shape, the pair of horizontal parasitic elements are formed at a predetermined interval to cover the surroundings of the dielectric substrate in the rectangular shape, and the predetermined interval is positioned on two faces, opposite to each other, of the dielectric substrate in the rectangular shape. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は、移動通信の基地局アンテナとして使用される無指向性アンテナに係り、特に、構造が簡単で、細径化を図った水平/垂直偏波ダイバーシチ無指向性アンテナに関する。   The present invention relates to an omnidirectional antenna used as a base station antenna for mobile communication, and more particularly to a horizontal / vertical polarization diversity omnidirectional antenna having a simple structure and a reduced diameter.

移動通信の基地局アンテナには、水平面内において無指向性のものが要求される場合がある。
このような無指向性アンテナとして、例えば、下記特許文献1に記載されている無指向性偏波ダイバーシチアンテナが知られている。
前述の特許文献1に記載の無指向性偏波ダイバーシチアンテナでは、地板の両側に配置された垂直偏波用アンテナ素子と、水平偏波用アンテナ素子にそれぞれ同相給電することにより無指向性を実現し、さらに、水平偏波用アンテナ素子を折り曲げて、アンテナカバーに収納することにより細径化を図っている。
A base station antenna for mobile communication may be required to be omnidirectional in a horizontal plane.
As such an omnidirectional antenna, for example, an omnidirectional polarization diversity antenna described in Patent Document 1 below is known.
The omnidirectional polarization diversity antenna described in Patent Document 1 described above realizes omnidirectionality by supplying in-phase power to the vertically polarized antenna elements and the horizontally polarized antenna elements arranged on both sides of the ground plane. In addition, the horizontal polarization antenna element is bent and housed in the antenna cover to reduce the diameter.

なお、本願発明に関連する先行技術文献としては以下のものがある。
特開2000−196351号公報
As prior art documents related to the invention of the present application, there are the following.
JP 2000-196351 A

しかしながら、前述の特許文献1に記載の無指向性偏波ダイバーシチアンテナでは、垂直偏波、および水平偏波用に、一対のアンテナ素子が必要であり、構造が複雑になるとともに、コストが高価になるという問題点があった。
さらに、前述の特許文献1に記載の無指向性偏波ダイバーシチアンテナでは、一対のアンテナ素子を折り曲げてアンテナカバーに収納するため、さらなる細径化が困難であるという問題点があった。
本発明は、前記従来技術の問題点を解決するためになされたものであり、本発明の目的は、従来の無指向性アンテナよりも、構造が簡単で、細径化を図った無指向性アンテナを提供することにある。
本発明の前記ならびにその他の目的と新規な特徴は、本明細書の記述及び添付図面によって明らかにする。
However, the omnidirectional polarization diversity antenna described in Patent Document 1 requires a pair of antenna elements for vertical polarization and horizontal polarization, which makes the structure complicated and expensive. There was a problem of becoming.
Furthermore, the omnidirectional polarization diversity antenna described in Patent Document 1 has a problem in that it is difficult to further reduce the diameter because a pair of antenna elements are folded and stored in the antenna cover.
The present invention has been made in order to solve the above-described problems of the prior art, and the object of the present invention is simpler in structure than a conventional omnidirectional antenna, and is omnidirectional with a reduced diameter. It is to provide an antenna.
The above and other objects and novel features of the present invention will become apparent from the description of this specification and the accompanying drawings.

本願において開示される発明のうち、代表的なものの概要を簡単に説明すれば、下記の通りである。
(1)矩形形状の誘電体基板と、前記矩形形状の内側の4つの面上に配置される接地導体と、前記矩形形状の外側の4つの面上に形成される水平偏波用アンテナ素子と、前記矩形形状の外側の4つの面上に形成される垂直偏波用アンテナ素子と、前記水平偏波用アンテナ素子上に配置される一対の水平偏波用無給電素子と、前記垂直偏波用アンテナ素子上に配置される垂直偏波用無給電素子とを有する無指向性アンテナであって、前記水平偏波用アンテナ素子と前記垂直偏波用アンテナ素子とは、前記矩形形状の外側の4つの面上に折り曲げられて形成される1個のパッチアンテナ素子であり、前記垂直偏波用無給電素子は、前記矩形形状の誘電体基板の周囲を覆うように形成されており、前記一対の水平無給電素子は、所定の隙間を置いて前記矩形形状の誘電体基板の周囲を覆うように形成されており、前記所定の隙間は、前記矩形形状の誘電体基板の相対向する2面上に位置することを特徴とする。
(2)矩形形状の誘電体基板と、前記矩形形状の内側の4つの面上に配置される接地導体と、前記矩形形状の外側の4つの面上に形成される垂直/水平偏波用アンテナ素子と、前記水平偏波用のアンテナ素子上に配置される一対の無給電素子とを有する無指向性アンテナであって、前記垂直/水平偏波用アンテナ素子は、前記矩形形状の外側の4つの面上に折り曲げられて形成される1個のパッチアンテナ素子であり、前記一対の無給電素子は、所定の隙間を置いて前記矩形形状の誘電体基板の周囲を覆うように形成されており、前記所定の隙間は、前記矩形形状の誘電体基板の相対向する2面上に位置することを特徴とする。
Of the inventions disclosed in this application, the outline of typical ones will be briefly described as follows.
(1) A rectangular dielectric substrate, a grounding conductor disposed on the four inner surfaces of the rectangular shape, and a horizontally polarized antenna element formed on the four outer surfaces of the rectangular shape A vertically polarized antenna element formed on the four outer surfaces of the rectangular shape, a pair of horizontally polarized parasitic elements disposed on the horizontally polarized antenna element, and the vertically polarized wave A non-directional antenna having a parasitic element for vertical polarization disposed on the antenna element for horizontal polarization, wherein the antenna element for horizontal polarization and the antenna element for vertical polarization are outside the rectangular shape One patch antenna element formed by bending on four surfaces, and the parasitic element for vertical polarization is formed so as to cover the periphery of the rectangular dielectric substrate, The horizontal parasitic element should have a predetermined gap. Serial is formed so as to cover the dielectric substrate around the rectangular shape, and the predetermined gap, characterized in that located two faces on which faces of the dielectric substrate of the rectangular shape.
(2) A rectangular dielectric substrate, a ground conductor disposed on the four inner surfaces of the rectangular shape, and a vertical / horizontal polarization antenna formed on the four outer surfaces of the rectangular shape An omnidirectional antenna having an element and a pair of parasitic elements disposed on the antenna element for horizontal polarization, wherein the antenna element for vertical / horizontal polarization is the outer four of the rectangular shape. One patch antenna element formed by bending on one surface, and the pair of parasitic elements are formed so as to cover the periphery of the rectangular dielectric substrate with a predetermined gap. The predetermined gap is located on two opposing surfaces of the rectangular dielectric substrate.

(3)矩形形状の誘電体基板と、前記矩形形状の内側の4つの面上に配置される接地導体と、前記矩形形状の外側の4つの面上に形成される複数の水平偏波用アンテナ素子と、前記矩形形状の外側の4つの面上に形成される複数の垂直偏波用アンテナ素子と、前記複数の水平偏波用アンテナ素子のそれぞれのアンテナ素子上に配置される複数対の水平偏波用無給電素子と、前記複数の垂直偏波用アンテナ素子のそれぞれのアンテナ素子上に配置される複数の垂直偏波用無給電素子とを有する無指向性アンテナであって、前記水平偏波用アンテナ素子と前記垂直偏波用アンテナ素子とは、前記矩形形状の外側の4つの面上に折り曲げられて形成される1個のパッチアンテナ素子であり、前記水平偏波用アンテナ素子と前記垂直偏波用アンテナ素子とは、前記矩形形状の誘電体基板の延長方法に交互に配置され、前記垂直偏波用無給電素子は、前記矩形形状の誘電体基板の周囲を覆うように形成されており、前記一対の水平無給電素子は、所定の隙間を置いて前記矩形形状の誘電体基板の周囲を覆うように形成されており、前記所定の隙間は、前記矩形形状の誘電体基板の相対向する2面上に位置し、前記垂直偏波用アンテナ素子を挟んで配置される2つの水平偏波用アンテナ素子に対応する前記一対の水平無給電素子は、前記隙間が互いに90°ずれるように配置されていることを特徴とする。 (3) A rectangular dielectric substrate, a ground conductor disposed on the four inner surfaces of the rectangular shape, and a plurality of horizontally polarized antennas formed on the four outer surfaces of the rectangular shape A plurality of vertically polarized antenna elements formed on the four outer surfaces of the rectangular shape, and a plurality of pairs of horizontal elements disposed on each of the plurality of horizontally polarized antenna elements. A omnidirectional antenna comprising a polarization parasitic element and a plurality of vertical polarization parasitic elements disposed on each of the plurality of vertical polarization antenna elements, the horizontal polarization The wave antenna element and the vertically polarized antenna element are one patch antenna element formed by being bent on the four outer surfaces of the rectangular shape, and the horizontally polarized antenna element and the Vertically polarized antenna element Are alternately arranged in the extension method of the rectangular dielectric substrate, and the parasitic element for vertical polarization is formed so as to cover the periphery of the rectangular dielectric substrate, The horizontal parasitic element is formed so as to cover the periphery of the rectangular dielectric substrate with a predetermined gap therebetween, and the predetermined gap is formed on two opposing surfaces of the rectangular dielectric substrate. The pair of horizontal parasitic elements corresponding to the two horizontally polarized antenna elements that are located between the vertically polarized antenna elements are arranged so that the gap is shifted by 90 ° from each other. It is characterized by that.

本願において開示される発明のうち代表的なものによって得られる効果を簡単に説明すれば、下記の通りである。
本発明の無指向性アンテナによれば、従来の無指向性アンテナよりも、構造が簡単で、細径化を図ることが可能となる。
The effects obtained by the representative ones of the inventions disclosed in the present application will be briefly described as follows.
According to the omnidirectional antenna of the present invention, the structure is simpler than that of the conventional omnidirectional antenna, and the diameter can be reduced.

以下、図面を参照して本発明の実施例を詳細に説明する。
なお、実施例を説明するための全図において、同一機能を有するものは同一符号を付け、その繰り返しの説明は省略する。
図1は、本発明の実施例の水平/垂直偏波ダイバーシチ無指向性アンテナのアンテナ素子を説明するための斜視図である。
図1において、1〜1は誘電体基板、2は水平偏波用パッチアンテナ素子、3は垂直偏波用パッチアンテナ素子である。
本実施例では、4枚の誘電体基板(1〜1)は、それぞれの誘電体基板に形成された凸部7を、隣接する誘電体基板に形成された孔8に挿入することにより、矩形形状に配置される。そして、矩形形状に配置された4枚の誘電体基板(1〜1)は、ネジ孔9に挿入されるネジにより、矩形形状に配置された4枚の誘電体基板(1〜1)の内側に配置される金属の角筒(図示せず)に固定される。なお、矩形形状に配置された4枚の誘電体基板(1〜1)の内側の面(裏面)に接地導体を形成するようにしてもよい。(この部分の記載が間違いでしたら、削除して下さい。)
また、矩形形状に配置された4枚の誘電体基板(1〜1)の外側の面(表面)には、水平偏波用パッチアンテナ素子2と、垂直偏波用パッチアンテナ素子3とが形成される。
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
In all the drawings for explaining the embodiments, parts having the same functions are given the same reference numerals, and repeated explanation thereof is omitted.
FIG. 1 is a perspective view for explaining an antenna element of a horizontal / vertical polarization diversity omnidirectional antenna according to an embodiment of the present invention.
In Figure 1, 1 1 to 1 4 are dielectric substrate, the patch antenna element for 2 horizontal polarization, 3 is a patch antenna element for vertical polarization.
In this embodiment, the four dielectric substrates (1 1 to 1 4 ) are formed by inserting the convex portions 7 formed on the respective dielectric substrates into the holes 8 formed on the adjacent dielectric substrates. Arranged in a rectangular shape. Then, four dielectric substrate disposed in a rectangular shape (1 1 to 1 4), by a screw inserted into the screw hole 9, the four arranged in a rectangular dielectric substrate (1 1 to 1 4 ) It is fixed to a metal square tube (not shown) arranged inside. In addition, you may make it form a grounding conductor in the inner surface (back surface) of the four dielectric substrates (1 1 to 14 ) arranged in a rectangular shape. (If this part is incorrect, delete it.)
Further, on the outer surface of the four dielectric substrate disposed in a rectangular shape (1 1 to 1 4) (surface), and the horizontal polarized wave patch antenna element 2, the vertically polarized patch antenna element 3 Is formed.

図2は、図1に示す水平偏波用パッチアンテナ素子2、あるいは、垂直偏波用パッチアンテナ素子3を説明するための図である。なお、図2は、図1に示す4枚の誘電体基板(1〜1)を平面上に展開した状態を模式的に示す図であり、点線は4枚の誘電体基板(1〜1)の境界を示す。
図2(a)に示すように、本実施例の水平偏波用パッチアンテナ素子2と、垂直偏波用パッチアンテナ素子3とは、4枚の誘電体基板(1〜1)の外側の4つの面上に折り曲げられて形成される1個のパッチアンテナで構成される。なお、各誘電体基板(1〜1)上に形成されるパッチアンテナは、隣接する誘電体基板の境界において電気的に接続されていることはいうまでもない。
ここで、図2(a)に示すパッチアンテナは、一辺の長さが、Lpの正方形形状のパッチアンテナである。なお、パッチアンテナの一辺の長さ(Lp)は、0.22λ≦Lp≦0.28λとされる。ここで、λoは、使用周波数の中心周波数(fo)の自由空間波長である。
また、正方形形状のパッチアンテナに代えて、図2(b)に示す直径がLpの円形状のパッチアンテナを使用することも可能である。
FIG. 2 is a diagram for explaining the horizontally polarized patch antenna element 2 or the vertically polarized patch antenna element 3 shown in FIG. FIG. 2 is a diagram schematically showing a state in which the four dielectric substrates (1 1 to 1 4 ) shown in FIG. 1 are developed on a plane, and the dotted lines indicate the four dielectric substrates (1 1 1 ~ 1 4 ) boundaries.
As shown in FIG. 2A, the horizontally polarized patch antenna element 2 and the vertically polarized patch antenna element 3 of the present embodiment are outside the four dielectric substrates (1 1 to 1 4 ). It is comprised by one patch antenna formed by bending on four surfaces. Needless to say, the patch antennas formed on each dielectric substrate (1 1 to 1 4 ) are electrically connected at the boundary between adjacent dielectric substrates.
Here, the patch antenna shown in FIG. 2A is a square patch antenna having a side length of Lp. The length of the patch antenna side (Lp) is a 0.22λ 0 ≦ Lp ≦ 0.28λ 0. Here, λo is a free space wavelength of the center frequency (fo) of the used frequency.
Further, instead of the square patch antenna, it is also possible to use a circular patch antenna having a diameter Lp shown in FIG.

図3は、本発明の実施例の水平/垂直偏波ダイバーシチ無指向性アンテナの水平偏波用無給電素子と垂直偏波用無給電素子を説明するための斜視図である。
図3に示すように、本実施例では、垂直偏波用パッチアンテナ素子3上には、4枚の誘電体基板(1〜1)の周囲を覆うように配置される筒状の導電体5で構成される垂直偏波用無給電素子が配置される。ここで、筒状の導電体5は、その切断面の形状は、4角形、あるいは、円形とされる。
また、図3に示すように、本実施例では、水平偏波用パッチアンテナ素子2には、1対のコの字状導電体(4,4)で構成される水平偏波用無給電素子が配置される。
1対のコの字状導電体(4,4)は、所定の隙間6を開けて、4枚の誘電体基板(1〜1)の周囲を覆うように形成されている。
なお、図4に示すように、水平偏波用無給電素子は、コの字状導電体のコーナー部を面取りした一対の面取りコの字状導電体(4,4)で構成することも可能である。
ここで、垂直偏波用無給電素子を、切断面の形状が4角形の筒状の導電体5で構成した場合、4角形の一辺の長さ(Lv)は、0.12λo≦Lv≦0.18λo、筒状の導電体5の高さ(Hv)は、0.32λo≦Hv≦0.48λoとされる。
また、水平偏波用無給電素子を構成する一対のコの字状導電体(4,4)の長辺の長さ(Lh)は、0.136λo≦Lh≦0.204λoとされる。また、一対のコの字状導電体(4,4)の高さ(Hh)は、0.16λo≦Hh≦0.24λoとされる。
さらに、一対のコの字状導電体(4,4)の長辺の間の距離は、一対のコの字状導電体(4,4)の長辺の長さ(Lh)と同じにされる。したがって、一対のコの字状導電体(4,4)は、切断面の形状が4角形(一辺の長さがLh)である筒状の導電体を2分割したような位置に配置される。
FIG. 3 is a perspective view for explaining a horizontal polarization parasitic element and a vertical polarization parasitic element of the horizontal / vertical polarization diversity omnidirectional antenna according to the embodiment of the present invention.
As shown in FIG. 3, in this embodiment, a cylindrical conductive conductor disposed on the vertically polarized patch antenna element 3 so as to cover the periphery of four dielectric substrates (1 1 to 1 4 ). A parasitic element for vertical polarization composed of the body 5 is arranged. Here, the shape of the cut surface of the cylindrical conductor 5 is a square or a circle.
Further, as shown in FIG. 3, in the present embodiment, the horizontally polarized patch antenna element 2 includes a pair of U-shaped conductors (4 1 , 4 2 ). A feeding element is arranged.
The pair of U-shaped conductors (4 1 , 4 2 ) is formed so as to cover the periphery of the four dielectric substrates (1 1 to 1 4 ) with a predetermined gap 6 therebetween.
As shown in FIG. 4, the parasitic element for horizontal polarization is composed of a pair of chamfered U-shaped conductors (4 3 , 4 4 ) in which the corners of the U-shaped conductor are chamfered. Is also possible.
Here, when the parasitic element for vertical polarization is configured by the cylindrical conductor 5 having a rectangular cut surface, the length (Lv) of one side of the square is 0.12λo ≦ Lv ≦ 0. The height (Hv) of the cylindrical conductor 5 is 0.32λo ≦ Hv ≦ 0.48λo.
Further, the length (Lh) of the long sides of the pair of U-shaped conductors (4 1 , 4 2 ) constituting the parasitic element for horizontal polarization is 0.136λo ≦ Lh ≦ 0.204λo. . The height (Hh) of the pair of U-shaped conductors (4 1 , 4 2 ) is 0.16λo ≦ Hh ≦ 0.24λo.
Furthermore, shaped conductor of a pair of co (4 1, 4 2) of the distance between the long sides is shaped conductor of a pair of co (4 1, 4 2) the length of the long side of the (Lh) To be the same. Therefore, the pair of U-shaped conductors (4 1 , 4 2 ) is arranged at a position where the cylindrical conductor having a quadrangular cut surface (the length of one side is Lh) is divided into two. Is done.

図5は、本発明の実施例の水平/垂直偏波ダイバーシチ無指向性アンテナを説明するための斜視図である。
図5に示すように、本実施例の水平/垂直偏波ダイバーシチ無指向性アンテナは、水平偏波用アンテナ素子と垂直偏波用アンテナ素子とを交互に配置して構成される。なお、図5は、図4に示す水平偏波用アンテナ素子と垂直偏波用アンテナ素子とを交互に配置した場合を図示している。
また、図6に示すように、垂直偏波用アンテナ素子を挟んで配置される2つの水平偏波用アンテナ素子に対応する一対のコの字状導電体(4,4)を、隙間6が90°ずれるように配置するようにしてもよい。なお、図6は、図3に示す水平偏波用アンテナ素子と垂直偏波用アンテナ素子とを交互に配置した場合を図示している。
本実施例の水平偏波用アンテナ素子の単体の指向性では、2〜3dBの指向性偏差があるが、図6に示すように一対のコの字状導電体(4,4)を配置することにより、水平偏波用アンテナ素子の指向性偏差を1dB程度に改善することができる。
図7は、本実施例の水平/垂直偏波ダイバーシチ無指向性アンテナの水平偏波、垂直偏波の指向性を示すグラフである。なお、この図7のグラフは、図6に示す水平/垂直偏波ダイバーシチ無指向性アンテナの一例の指向性を示すグラフである。
図7において、図7(a)が、水平偏波の水垂直面内指向性を、図7(b)が、垂直偏波の垂直面内指向性を、図7(c)が、水平偏波の水平面内指向性を、図7(d)が、垂直偏波の水平面内指向性を示す。
図7(c)、図7(d)に示すように、本実施例では、水平偏波の水平面内指向性、垂直偏波の水平面内指向性として、良好な無指向性が得られているのが分かる。
FIG. 5 is a perspective view for explaining a horizontal / vertical polarization diversity omnidirectional antenna according to an embodiment of the present invention.
As shown in FIG. 5, the horizontal / vertical polarization diversity omnidirectional antenna of this embodiment is configured by alternately arranging horizontal polarization antenna elements and vertical polarization antenna elements. FIG. 5 shows a case where the horizontally polarized antenna elements and the vertically polarized antenna elements shown in FIG. 4 are alternately arranged.
Further, as shown in FIG. 6, a pair of U-shaped conductors (4 1 , 4 2 ) corresponding to two horizontally polarized antenna elements arranged with the vertically polarized antenna elements sandwiched between them, You may make it arrange | position so that 6 may shift | deviate 90 degrees. 6 illustrates a case where the horizontally polarized antenna elements and the vertically polarized antenna elements shown in FIG. 3 are alternately arranged.
The single directivity of horizontal polarization for the antenna element of the present embodiment, there is a directional deviation of 2 to 3 dB, shaped conductor of a pair of co as shown in FIG. 6 (4 1, 4 2) By disposing, the directivity deviation of the horizontally polarized antenna element can be improved to about 1 dB.
FIG. 7 is a graph showing the directivity of horizontal polarization and vertical polarization of the horizontal / vertical polarization diversity omnidirectional antenna of the present embodiment. 7 is a graph showing the directivity of an example of the horizontal / vertical polarization diversity omnidirectional antenna shown in FIG.
In FIG. 7, FIG. 7A shows the horizontal polarization directivity in the horizontal vertical plane, FIG. 7B shows the vertical polarization directivity in the vertical plane, and FIG. 7C shows the horizontal polarization. FIG. 7D shows the directivity of the wave in the horizontal plane, and FIG. 7D shows the directivity of the vertical polarization in the horizontal plane.
As shown in FIGS. 7C and 7D, in this embodiment, excellent omnidirectionality is obtained as horizontal polarization in the horizontal plane and vertical polarization in the horizontal plane. I understand.

以上説明したように、本実施例では、水平偏波用、及び、垂直偏波用に、それぞれ単一のアンテナ素子を使用して、水平/垂直偏波ダイバーシチ無指向性アンテナを構成するようにしたので、前述の特許文献1に記載の無指向性偏波ダイバーシチアンテナに比して、構造が簡単で、しかも、コストを低減することが可能となる。
その上、本実施例では、水平偏波用、及び、垂直偏波用に、それぞれ単一のアンテナ素子を使用し、当該単一のアンテナ素子を4枚の誘電体基板外側の4つの面上に折り曲げて形成するようにしたので、前述の特許文献1に記載の無指向性偏波ダイバーシチアンテナに比して、さらなる細径化を図ることが可能である。
例えば、図3に示すLhが、0.17λoとするとき、本実施例の水平/垂直偏波ダイバーシチ無指向性アンテナは、直径が0.25λoの円筒状のアンテナカバー内に収納することが可能である。
以上、本発明者によってなされた発明を、前記実施例に基づき具体的に説明したが、本発明は、前記実施例に限定されるものではなく、その要旨を逸脱しない範囲において種々変更可能であることは勿論である。
As described above, in this embodiment, a horizontal / vertical polarization diversity omnidirectional antenna is configured by using a single antenna element for horizontal polarization and vertical polarization, respectively. Therefore, as compared with the omnidirectional polarization diversity antenna described in Patent Document 1 described above, the structure is simple and the cost can be reduced.
In addition, in the present embodiment, a single antenna element is used for horizontal polarization and vertical polarization, respectively, and the single antenna element is placed on four surfaces outside the four dielectric substrates. Therefore, the diameter can be further reduced as compared with the omnidirectional polarization diversity antenna described in Patent Document 1.
For example, when Lh shown in FIG. 3 is 0.17λo, the horizontal / vertical polarization diversity omnidirectional antenna of this embodiment can be accommodated in a cylindrical antenna cover having a diameter of 0.25λo. It is.
As mentioned above, the invention made by the present inventor has been specifically described based on the above embodiments. However, the present invention is not limited to the above embodiments, and various modifications can be made without departing from the scope of the invention. Of course.

本発明の実施例の水平/垂直偏波ダイバーシチ無指向性アンテナのアンテナ素子を説明するための斜視図である。It is a perspective view for demonstrating the antenna element of the horizontal / vertical polarization diversity omnidirectional antenna of the Example of this invention. 図1に示す水平偏波用パッチアンテナ素子、あるいは、垂直偏波用パッチアンテナ素子を説明するための図である。It is a figure for demonstrating the patch antenna element for horizontal polarization shown in FIG. 1, or the patch antenna element for vertical polarization. 本発明の実施例の水平/垂直偏波ダイバーシチ無指向性アンテナの水平偏波用無給電素子と垂直偏波用無給電素子を説明するための斜視図である。It is a perspective view for explaining a parasitic element for horizontal polarization and a parasitic element for vertical polarization of a horizontal / vertical polarization diversity omnidirectional antenna according to an embodiment of the present invention. 本発明の実施例の水平/垂直偏波ダイバーシチ無指向性アンテナの水平偏波用無給電素子の変形例を説明するための斜視図である。It is a perspective view for demonstrating the modification of the parasitic element for horizontal polarization of the horizontal / vertical polarization diversity omnidirectional antenna of the Example of this invention. 本発明の実施例の水平/垂直偏波ダイバーシチ無指向性アンテナを説明するための斜視図である。It is a perspective view for demonstrating the horizontal / vertical polarization diversity omnidirectional antenna of the Example of this invention. 本発明の実施例の水平/垂直偏波ダイバーシチ無指向性アンテナの変形例を説明するための斜視図である。It is a perspective view for demonstrating the modification of the horizontal / vertically polarized-wave diversity omnidirectional antenna of the Example of this invention. 本発明の実施例の水平/垂直偏波ダイバーシチ無指向性アンテナの指向性を示すグラフである。It is a graph which shows the directivity of the horizontal / vertical polarization diversity omnidirectional antenna of the Example of this invention.

符号の説明Explanation of symbols

〜1 誘電体基板
2 水平偏波用パッチアンテナ素子
3 垂直偏波用パッチアンテナ素子
,4 一対のコの字状導電体
,4 一対の面取りコの字状導電体
5 筒状の導電体
6 隙間
7 凸部
8 孔
9 ネジ孔
1 1 to 1 4 Dielectric substrate 2 Horizontally polarized patch antenna element 3 Vertically polarized patch antenna element 4 1 and 4 2 A pair of U-shaped conductors 4 3 and 4 4 A pair of chamfered U-shaped conductors Body 5 Cylindrical conductor 6 Gap 7 Projection 8 Hole 9 Screw hole

Claims (3)

矩形形状の誘電体基板と、
前記矩形形状の内側の4つの面上に配置される接地導体と、
前記矩形形状の外側の4つの面上に形成される水平偏波用アンテナ素子と、
前記矩形形状の外側の4つの面上に形成される垂直偏波用アンテナ素子と、
前記水平偏波用アンテナ素子上に配置される一対の水平偏波用無給電素子と、
前記垂直偏波用アンテナ素子上に配置される垂直偏波用無給電素子とを有する無指向性アンテナであって、
前記水平偏波用アンテナ素子と前記垂直偏波用アンテナ素子とは、前記矩形形状の外側の4つの面上に折り曲げられて形成される1個のパッチアンテナ素子であり、
前記垂直偏波用無給電素子は、前記矩形形状の誘電体基板の周囲を覆うように形成されており、
前記一対の水平無給電素子は、所定の隙間を置いて前記矩形形状の誘電体基板の周囲を覆うように形成されており、
前記所定の隙間は、前記矩形形状の誘電体基板の相対向する2面上に位置することを特徴とする無指向性アンテナ。
A rectangular dielectric substrate;
A ground conductor disposed on four inner surfaces of the rectangular shape;
A horizontally polarized antenna element formed on the four outer surfaces of the rectangular shape;
Vertically polarized antenna elements formed on the four outer surfaces of the rectangular shape;
A pair of horizontally polarized parasitic elements disposed on the horizontally polarized antenna element;
A omnidirectional antenna having a vertically polarized parasitic element disposed on the vertically polarized antenna element,
The horizontally polarized antenna element and the vertically polarized antenna element are one patch antenna element formed by being bent on four outer surfaces of the rectangular shape,
The parasitic element for vertical polarization is formed so as to cover the periphery of the rectangular dielectric substrate,
The pair of horizontal parasitic elements is formed to cover the periphery of the rectangular dielectric substrate with a predetermined gap therebetween,
The omnidirectional antenna, wherein the predetermined gap is located on two opposing surfaces of the rectangular dielectric substrate.
矩形形状の誘電体基板と、
前記矩形形状の内側の4つの面上に配置される接地導体と、
前記矩形形状の外側の4つの面上に形成される垂直/水平偏波用アンテナ素子と、
前記水平偏波用のアンテナ素子上に配置される一対の無給電素子とを有する無指向性アンテナであって、
前記垂直/水平偏波用アンテナ素子は、前記矩形形状の外側の4つの面上に折り曲げられて形成される1個のパッチアンテナ素子であり、
前記一対の無給電素子は、所定の隙間を置いて前記矩形形状の誘電体基板の周囲を覆うように形成されており、
前記所定の隙間は、前記矩形形状の誘電体基板の相対向する2面上に位置することを特徴とする無指向性アンテナ。
A rectangular dielectric substrate;
A ground conductor disposed on four inner surfaces of the rectangular shape;
Vertical / horizontal polarization antenna elements formed on the four outer surfaces of the rectangular shape;
An omnidirectional antenna having a pair of parasitic elements disposed on the antenna element for horizontal polarization,
The vertical / horizontal polarization antenna element is a single patch antenna element formed by being bent on four outer surfaces of the rectangular shape,
The pair of parasitic elements is formed so as to cover the periphery of the rectangular dielectric substrate with a predetermined gap therebetween,
The omnidirectional antenna, wherein the predetermined gap is located on two opposing surfaces of the rectangular dielectric substrate.
矩形形状の誘電体基板と、
前記矩形形状の内側の4つの面上に配置される接地導体と、
前記矩形形状の外側の4つの面上に形成される複数の水平偏波用アンテナ素子と、
前記矩形形状の外側の4つの面上に形成される複数の垂直偏波用アンテナ素子と、
前記複数の水平偏波用アンテナ素子のそれぞれのアンテナ素子上に配置される複数対の水平偏波用無給電素子と、
前記複数の垂直偏波用アンテナ素子のそれぞれのアンテナ素子上に配置される複数の垂直偏波用無給電素子とを有する無指向性アンテナであって、
前記水平偏波用アンテナ素子と前記垂直偏波用アンテナ素子とは、前記矩形形状の外側の4つの面上に折り曲げられて形成される1個のパッチアンテナ素子であり、
前記水平偏波用アンテナ素子と前記垂直偏波用アンテナ素子とは、前記矩形形状の誘電体基板の延長方法に交互に配置され、
前記垂直偏波用無給電素子は、前記矩形形状の誘電体基板の周囲を覆うように形成されており、
前記一対の水平無給電素子は、所定の隙間を置いて前記矩形形状の誘電体基板の周囲を覆うように形成されており、
前記所定の隙間は、前記矩形形状の誘電体基板の相対向する2面上に位置し、
前記垂直偏波用アンテナ素子を挟んで配置される2つの水平偏波用アンテナ素子に対応する前記一対の水平無給電素子は、前記隙間が互いに90°ずれるように配置されていることを特徴とする無指向性アンテナ。
A rectangular dielectric substrate;
A ground conductor disposed on four inner surfaces of the rectangular shape;
A plurality of horizontally polarized antenna elements formed on the four outer surfaces of the rectangular shape;
A plurality of vertically polarized antenna elements formed on the four outer surfaces of the rectangular shape;
A plurality of pairs of horizontally polarized parasitic elements disposed on each antenna element of the plurality of horizontally polarized antenna elements;
A non-directional antenna having a plurality of vertically polarized parasitic elements disposed on each of the plurality of vertically polarized antenna elements,
The horizontally polarized antenna element and the vertically polarized antenna element are one patch antenna element formed by being bent on four outer surfaces of the rectangular shape,
The horizontally polarized antenna elements and the vertically polarized antenna elements are alternately arranged in a method of extending the rectangular dielectric substrate,
The parasitic element for vertical polarization is formed so as to cover the periphery of the rectangular dielectric substrate,
The pair of horizontal parasitic elements is formed to cover the periphery of the rectangular dielectric substrate with a predetermined gap therebetween,
The predetermined gap is located on two opposing surfaces of the rectangular dielectric substrate,
The pair of horizontal parasitic elements corresponding to the two horizontally polarized antenna elements arranged with the vertically polarized antenna elements interposed therebetween are arranged such that the gap is shifted by 90 ° from each other. An omnidirectional antenna.
JP2008228123A 2008-09-05 2008-09-05 Omnidirectional antenna Expired - Fee Related JP4825249B2 (en)

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