JPH0372703A - End fire type antenna equipment - Google Patents
End fire type antenna equipmentInfo
- Publication number
- JPH0372703A JPH0372703A JP20856789A JP20856789A JPH0372703A JP H0372703 A JPH0372703 A JP H0372703A JP 20856789 A JP20856789 A JP 20856789A JP 20856789 A JP20856789 A JP 20856789A JP H0372703 A JPH0372703 A JP H0372703A
- Authority
- JP
- Japan
- Prior art keywords
- antenna element
- horn
- helical
- ground plate
- helical antenna
- 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
- 230000008878 coupling Effects 0.000 claims abstract description 11
- 238000010168 coupling process Methods 0.000 claims abstract description 11
- 238000005859 coupling reaction Methods 0.000 claims abstract description 11
- 230000003071 parasitic effect Effects 0.000 claims description 21
- 239000004020 conductor Substances 0.000 abstract description 5
- 230000005284 excitation Effects 0.000 abstract description 4
- 235000019504 cigarettes Nutrition 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000003491 array Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 235000019506 cigar Nutrition 0.000 description 1
- 239000003989 dielectric material Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野］
本発明は電波通信等に用いるエンドファイア形アンテナ
装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to an end-fire antenna device used for radio wave communications and the like.
従来、この種のエンドファイア形アンテナ装置としては
、いわゆるシガーアンテナ（Ｃｉｇａｒ Ａｎｔｅｎｎ
ａ）が知られている。該シガーアンテナは第７図に示す
ように、導波管２０内に差し込むテーパー状ロッド２１
と、円錐形ホーン２２と、゛前記テーパー状ロッド２１
の先端に一定ピッチで取付けた複数のディスク２３．２
３・・・・・・とから構成されており、ロッド２１の先
端は先細になるようにテーパ状に形成されている。Conventionally, this type of end-fire antenna device has been known as a so-called cigarette antenna.
a) is known. As shown in FIG. 7, the cigarette antenna has a tapered rod 21 inserted into a waveguide 20.
, the conical horn 22 , and the tapered rod 21
A plurality of disks 23.2 attached at a constant pitch to the tips of
3..., and the tip of the rod 21 is formed into a tapered shape.
〔発明が解決しようとする課題］
しかし、従来のシガーアンテナは十分な指向利得が得ら
れないばかりでなく、電力結合が不充分であり、十分な
励振効率が得られなかった。[Problems to be Solved by the Invention] However, conventional cigar antennas not only cannot obtain sufficient directivity gain, but also have insufficient power coupling, and cannot obtain sufficient excitation efficiency.
本発明の目的は前記課題を解決したエンドファイア形ア
ンテナ装置を提供することにある。An object of the present invention is to provide an end-fire antenna device that solves the above problems.
〔課題を解決するための手段］
前記目的を達成するため、本発明は電波反射用グランド
板と、前記グランド板より前方に突き出たヘリカル又は
スパイラルアンテナ素子と、同形のボード又はリングを
誘電体を挾んで列状に配列し、前記ヘリカル又はスパイ
ラルアンテナ素子に電磁結合する無給電素子列と、前記
グランド板に結合され、前記アンテナ素子及び無給電素
子列６に形成される電磁結合部を覆うホーン又はキャビ
ティを有するものである。[Means for Solving the Problems] In order to achieve the above object, the present invention includes a radio wave reflecting ground plate, a helical or spiral antenna element protruding forward from the ground plate, and a board or ring of the same shape made of a dielectric material. a parasitic element row that is arranged in a row sandwiching and electromagnetically coupled to the helical or spiral antenna element; and a horn that is coupled to the ground plate and covers an electromagnetic coupling portion formed between the antenna element and the parasitic element row 6. Or it has a cavity.
以下、本発明の一実施例を図により説明する。 Hereinafter, one embodiment of the present invention will be described with reference to the drawings.
第１図は本発明の一実施例を示す構成図、第２図（ａ）
は同拡大図である。Fig. 1 is a configuration diagram showing an embodiment of the present invention, Fig. 2(a)
is an enlarged view of the same.
図において、同軸線ｌの外部導体＋ａに電波反射用のグ
ランド板２を直角に取４−ｊけ、その内部導体１ｂに小
数巻へリカルアンテナ素子３を結線して該ヘリカルアン
テナ素子３を電波反射用グランド板２の透孔２ａを通し
てその前方に突き出す。In the figure, a ground plate 2 for reflecting radio waves is installed perpendicularly to the outer conductor +a of the coaxial line l, and a helical antenna element 3 with a small number of turns is connected to the inner conductor 1b of the ground plate 4-j. It passes through the through hole 2a of the reflective ground plate 2 and projects forward thereof.
一方、同形の円盤状ボード（導体）４，４・・・を支持
用誘電体５を挾んで列状に配列して無給電素子列６を構
成する。また、円盤状ボード４の最外周縁に沿う円周長
はｌλ（λ：使用波長）前後の長さに設定する。On the other hand, disk-shaped boards (conductors) 4, 4, . . . of the same shape are arranged in a row with a support dielectric 5 in between to form a parasitic element row 6. Further, the circumferential length along the outermost edge of the disc-shaped board 4 is set to approximately lλ (λ: wavelength used).
さらに、グランド板２に円錐形ホーン７を結合し、その
内部に支持用誘電体８を充填するとともに、支持用誘電
体８に無給電素子列６を支持して該無給電素子列６をヘ
リカルアンテナ素子３に対し電磁結合させ、ヘリカルア
ンテナ素子３と無給電素子列６との電磁結合部を円錐形
ホーン７で覆う。Further, a conical horn 7 is coupled to the ground plate 2, and a support dielectric 8 is filled inside the conical horn 7, and the parasitic element row 6 is supported on the support dielectric 8 so that the parasitic element row 6 is helical. The antenna element 3 is electromagnetically coupled to the antenna element 3, and the electromagnetic coupling portion between the helical antenna element 3 and the parasitic element array 6 is covered with a conical horn 7.
実施例において、同軸線１からヘリカルアンテナ素子３
に給電すると、ヘリカルアンテナ素子３と無給電素子列
６との間の電磁結合により無給電素子列６が励振され、
結合電力は無給電素子列６をその長さ方向に進行して無
給電素子列６の先端開放端から円偏波として放射される
。In the embodiment, from the coaxial line 1 to the helical antenna element 3
When power is supplied to the parasitic element array 6, the parasitic element array 6 is excited due to electromagnetic coupling between the helical antenna element 3 and the parasitic element array 6.
The combined power travels along the length of the parasitic element array 6 and is radiated from the open end of the parasitic element array 6 as a circularly polarized wave.
尚、実施例では円錐形ホーン７を用いたが、ホーン７に
代えて第２図（ロ）に示すように円筒状のキャビティ９
を用いてもよい。Although the conical horn 7 was used in the embodiment, a cylindrical cavity 9 was used instead of the horn 7 as shown in FIG.
may also be used.
実施例ではヘリカルアンテナ素子３を用いたが、第３図
（ａ）に示すような２線式スパイラルアンテナ素子（又
は１線式スパイラルアンテナ素子）１０を用いてもよい
。２線式スパイラルアンテナ素子の場合、同軸線１にバ
ラン回路１１を介して２線式スパイラルアンテナ素子Ｉ
Ｏが結線される（１線式スパイラルアンテナ素子の場合
にはバラン回路は不要となる）。Although the helical antenna element 3 is used in the embodiment, a two-wire spiral antenna element (or one-wire spiral antenna element) 10 as shown in FIG. 3(a) may also be used. In the case of a two-wire spiral antenna element, the two-wire spiral antenna element I is connected to the coaxial line 1 via a balun circuit 11.
O is connected (in the case of a one-wire spiral antenna element, a balun circuit is not required).
また、無給電素子列６として円盤状ボード４を用いたが
、円盤状のものに代えて第３図（ロ）に示すようにリン
グ４ａを用いてもよく、そのリング４ａの円周長は１λ
（λ：使用波長）前後に設定する。ｊ、１７Ｉ、無給電
素子列６をなす円盤状ボード４又はリング４ａを無給電
素子列６の長さ方向に沿って直線状にその径が徐々に縮
径されることにより、指向特性を向上することが可能と
なる。また、ヘリカルアンテナ素子３に対する給電方式
として同軸ケーブルを用いたが、導波管方式を用いても
よい。ラジアル導波管による給電方式は第５図に示すよ
うにラジアル導波管１２の広面積１２ａを電波反射用グ
ランド板２として用い、ヘリカルアンテナ素子３をグラ
ンド板としての広面積１２ａより立ち上らせ、かつヘリ
カルアンテナ素子３の一端を導波管１２内に臨ませ、ラ
ジアル導波管１２内への供給電力をヘリカルアンテナ素
子３に給電するものである。Further, although the disk-shaped board 4 is used as the parasitic element array 6, a ring 4a may be used instead of the disk-shaped board as shown in FIG. 3(b), and the circumference of the ring 4a is 1λ
(λ: wavelength used) Set before or after. j, 17I, the diameter of the disk-shaped board 4 or ring 4a forming the parasitic element row 6 is gradually reduced in a straight line along the length direction of the parasitic element row 6, thereby improving the directivity characteristics. It becomes possible to do so. Further, although a coaxial cable was used as a feeding method for the helical antenna element 3, a waveguide method may be used. As shown in FIG. 5, the power feeding system using a radial waveguide uses the wide area 12a of the radial waveguide 12 as the ground plate 2 for reflecting radio waves, and the helical antenna element 3 is raised from the wide area 12a serving as the ground plate. In addition, one end of the helical antenna element 3 is made to face inside the waveguide 12, and the power supplied to the inside of the radial waveguide 12 is fed to the helical antenna element 3.
さらに、第４図、第５図に示すようにラジアル導波管１
２に、ヘリカルアンテナ素子３及び円錐形ホーン７（並
びに無給電素子列６を含む）の組を複数組同一円周上に
配列してもよい。また、第６図に示すように直線導波管
＋２ｂに、ヘリカルアンテナ素子３及びキャビティ９並
びに無給電素子列６の組を複数組直線状に配列してもよ
い。これらの場合、複数組のアンテナからの放射パター
ンを一断面のみに尖鋭化し、ビームを鋭利にして受信及
び送信利得を向上できる。Furthermore, as shown in FIGS. 4 and 5, a radial waveguide 1
2, a plurality of sets of the helical antenna element 3 and the conical horn 7 (and the parasitic element array 6) may be arranged on the same circumference. Furthermore, as shown in FIG. 6, a plurality of sets of helical antenna elements 3, cavities 9, and parasitic element arrays 6 may be linearly arranged in a straight waveguide +2b. In these cases, it is possible to sharpen the radiation patterns from the plurality of antenna sets in only one cross section, sharpen the beam, and improve reception and transmission gains.
以上説明したように、本発明はヘリカル又はスパイラル
アンテナ素子と無給電素子列とを組合せたので、指向利
得を向上できるとともに、その電磁結合部にホーン又は
キャビティを備えて電力結合の改善を図ったため、励振
の効率を向上できる効果を有する。As explained above, since the present invention combines a helical or spiral antenna element and a parasitic element array, the directivity gain can be improved, and the electromagnetic coupling part is provided with a horn or a cavity to improve power coupling. , which has the effect of improving excitation efficiency.
第１図は本発明の一実施例を示す構成図、第２図（ａ）
は同拡大図、第２図（ロ）はキャビティを取付けた状態
を示す図、第３図（ａ）、（ロ）は本発明の他の実施例
を示す図、第４図は本発明の応用例を示す正面図、第５
図は第４図のＶ−Ｖ線断面図、第６図は本発明の他の応
用例を示す正面図、第７図は従来例を示す断面図である
。
２・・・電波反射用グランド板
３・・・ヘリカルアンテナ素子
６・・・無給電素子列 ７・・・円錐形ホーン９・・
キャビティFig. 1 is a configuration diagram showing an embodiment of the present invention, Fig. 2(a)
is an enlarged view of the same, FIG. 2(b) is a view showing the state in which the cavity is attached, FIGS. 3(a) and (b) are views showing other embodiments of the present invention, and FIG. 4 is a view of the present invention. Front view showing application example, No. 5
The drawings are a sectional view taken along the line V-V in FIG. 4, FIG. 6 is a front view showing another application example of the present invention, and FIG. 7 is a sectional view showing a conventional example. 2... Ground plate for radio wave reflection 3... Helical antenna element 6... Parasitic element array 7... Conical horn 9...
cavity
Claims (1)
方に突き出たヘリカル又はスパイラルアンテナ素子と、
同形のボード又はリングを誘電体を挾んで列状に配列し
、前記ヘリカル又はスパイラルアンテナ素子に電磁結合
する無給電素子列と、前記グランド板に結合され、前記
アンテナ素子及び無給電素子列間に形成される電磁結合
部を覆うホーン又はキャビティを有することを特徴とす
るエンドファイア形アンテナ装置。(1) a radio wave reflecting ground plate; a helical or spiral antenna element protruding forward from the ground plate;
Boards or rings of the same shape are arranged in a row with a dielectric interposed between them, and a parasitic element row is electromagnetically coupled to the helical or spiral antenna element, and a parasitic element row is connected to the ground plate and is connected to the antenna element and the parasitic element row. An end-fire antenna device characterized by having a horn or a cavity that covers an electromagnetic coupling portion to be formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20856789A JPH0372703A (en) | 1989-08-11 | 1989-08-11 | End fire type antenna equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20856789A JPH0372703A (en) | 1989-08-11 | 1989-08-11 | End fire type antenna equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0372703A true JPH0372703A (en) | 1991-03-27 |
Family
ID=16558323
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20856789A Pending JPH0372703A (en) | 1989-08-11 | 1989-08-11 | End fire type antenna equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0372703A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012028869A (en) * | 2010-07-20 | 2012-02-09 | Fujitsu Ltd | Antenna device and communication device |
| JP2013507851A (en) * | 2009-10-16 | 2013-03-04 | イーエムエス・テクノロジーズ・カナダ，リミテッド | Optimal load for increasing the gain of array antennas. |
| FR3003699A1 (en) * | 2013-03-19 | 2014-09-26 | Tagsys | COMPACT CIRCULAR POLARIZING PROPELLER ANTENNA |
-
1989
- 1989-08-11 JP JP20856789A patent/JPH0372703A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013507851A (en) * | 2009-10-16 | 2013-03-04 | イーエムエス・テクノロジーズ・カナダ，リミテッド | Optimal load for increasing the gain of array antennas. |
| JP2012028869A (en) * | 2010-07-20 | 2012-02-09 | Fujitsu Ltd | Antenna device and communication device |
| WO2013190532A3 (en) * | 2012-06-22 | 2014-12-11 | Tagsys | Circularly polarized compact helical antenna |
| US9755301B2 (en) | 2012-06-22 | 2017-09-05 | Tagsys | Circularly polarized compact helical antenna |
| FR3003699A1 (en) * | 2013-03-19 | 2014-09-26 | Tagsys | COMPACT CIRCULAR POLARIZING PROPELLER ANTENNA |
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