JPS6319086B2 - - Google Patents
Info
- Publication number
- JPS6319086B2 JPS6319086B2 JP3496982A JP3496982A JPS6319086B2 JP S6319086 B2 JPS6319086 B2 JP S6319086B2 JP 3496982 A JP3496982 A JP 3496982A JP 3496982 A JP3496982 A JP 3496982A JP S6319086 B2 JPS6319086 B2 JP S6319086B2
- Authority
- JP
- Japan
- Prior art keywords
- waveguide
- slots
- rectangular
- rectangular waveguide
- slot
- 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
Links
- 230000001939 inductive effect Effects 0.000 claims description 18
- 210000000554 iris Anatomy 0.000 description 12
- 230000001965 increasing effect Effects 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/0006—Particular feeding systems
- H01Q21/0037—Particular feeding systems linear waveguide fed arrays
- H01Q21/0043—Slotted waveguides
- H01Q21/005—Slotted waveguides arrays
Landscapes
- Variable-Direction Aerials And Aerial Arrays (AREA)
- Waveguide Aerials (AREA)
Description
【発明の詳細な説明】
この発明は矩形導波管にスロツトを形成して成
る小開口面積の導波管形スロツトアレイアンテナ
の改良に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in a waveguide slot array antenna having a small opening area, which is formed by forming a slot in a rectangular waveguide.
第１図は従来の導波管形スロツトアレイアンテ
ナの構成斜視図を示したものであり、図中１は矩
形導波管、２は短絡板、３ａ，３ｄはスロツトで
ある。ここで、通常の導波管形スロツトアレイア
ンテナでは各矩形導波管１に特定の位相関係で給
電するための給電用導波管が必要であるが、説明
の簡略化のため省略している。 FIG. 1 shows a perspective view of the structure of a conventional waveguide slot array antenna. In the figure, 1 is a rectangular waveguide, 2 is a shorting plate, and 3a and 3d are slots. Here, a normal waveguide type slot array antenna requires a power feeding waveguide to feed power in a specific phase relationship to each rectangular waveguide 1, but this is omitted for the sake of brevity. There is.
この従来の導波管形スロツトアレイアンテナに
ついて以下、簡単に説明する。 This conventional waveguide slot array antenna will be briefly explained below.
従来の導波管形スロツトアレイアンテナは複数
本の矩形導波管１をＨ面が同一面に成るように並
べ、各矩形導波管１には管軸方向の所定の間隔で
Ｈ面にスロツト３ａ，３ｂを形成して実現してい
た。ここで、前述の所定の間隔とは短絡板２を矩
形導波管１の両端に形成して矩形導波管１内に定
在波を発生させ、この定在波にスロツト３ａ，３
ｂを結させて成る導波管形スロツトアレイアンテ
ナの場合、矩形導波管１の管内波長の半分であ
る。この場合、両端に短絡板２を装着した矩形導
波管１は一種の共振器として作用し、ｎ個のスロ
ツト３ａ，３ｂを形成しようとすると（管内波長
×ｎ）／２の長さが必要である。このように従来
の導波管形スロツトアレイアンテナの欠点は、各
矩形導波管１に形成したスロツト３ａ，３ｂの相
互間隔が限定され、スロツト３ａ，３ｂ数が限定
されることである。これは特に面積の少ないアン
テナに成ると大きな問題と成り、１個でもスロツ
ト３ａ，３ｂを多くしてアンテナの利得及びアン
テナパターンを向上させようとした場合、大きな
制約に成つていた。ここで、前述のスロツト３
ａ，３ｂの相互間隔について若干補足する。ま
ず、補足説明の前に説明の都合上、次の事を定義
する。 In a conventional waveguide slot array antenna, a plurality of rectangular waveguides 1 are arranged so that their H planes are on the same plane, and each rectangular waveguide 1 has a plurality of rectangular waveguides 1 arranged on the H plane at predetermined intervals in the tube axis direction. This was realized by forming slots 3a and 3b. Here, the above-mentioned predetermined interval means that the short circuit plates 2 are formed at both ends of the rectangular waveguide 1 to generate a standing wave in the rectangular waveguide 1, and that the standing waves are connected to the slots 3a, 3.
In the case of a waveguide type slot array antenna formed by connecting the waveguides b, the wavelength is half the wavelength within the rectangular waveguide 1. In this case, the rectangular waveguide 1 with short-circuit plates 2 attached to both ends acts as a kind of resonator, and when trying to form n slots 3a and 3b, a length of (tube wavelength x n)/2 is required. It is. As described above, the disadvantage of the conventional waveguide slot array antenna is that the mutual spacing between the slots 3a and 3b formed in each rectangular waveguide 1 is limited, and the number of slots 3a and 3b is limited. This becomes a big problem especially when it comes to antennas with a small area, and becomes a big constraint when trying to improve the antenna gain and antenna pattern by increasing the number of slots 3a and 3b even by one. Here, the slot 3 mentioned above
I would like to add some additional information regarding the mutual spacing between a and 3b. First, before providing supplementary explanations, for convenience of explanation, we will define the following.
矩形導波管１の管軸方向をＸ方向、矩形導波管
１の並んでいる方向をＹ方向と呼ぶ。 The tube axis direction of the rectangular waveguide 1 is called the X direction, and the direction in which the rectangular waveguides 1 are lined up is called the Y direction.
説明にもどると、Ｘ方向のスロツト３ａ，３ｂ
の相互間隔は各矩形導波管１の管内波長で決ま
り、Ｙ方向のスロツト３ａ，３ｂの相互間隔は各
矩形導波管１の物理的寸法すなわち各矩形導波管
１のＨ面横寸法で決まる。このため、各矩形導波
管１のＨ面寸法を小さくして、Ｙ方向のスロツト
３ａ，３ｂ数を多くしようとすると、各矩形導波
管１の管内波長が長く成りＸ方向のスロツト３
ａ，３ｂ数が少なく成り、アンテナ全体としては
アンテナの面積と周波数が決まるとスロツト３
ａ，３ｂの数はほぼ決まつてしまう。 Returning to the explanation, slots 3a and 3b in the X direction
The mutual spacing between the slots 3a and 3b in the Y direction is determined by the internal wavelength of each rectangular waveguide 1, and the mutual spacing between the slots 3a and 3b in the Y direction is determined by the physical dimension of each rectangular waveguide 1, that is, the horizontal dimension of the H plane of each rectangular waveguide 1. It's decided. Therefore, if an attempt is made to reduce the H-plane dimension of each rectangular waveguide 1 and increase the number of slots 3a and 3b in the Y direction, the internal wavelength of each rectangular waveguide 1 will become longer and the number of slots 3 in the X direction will increase.
When the number of a and 3b decreases, and the area and frequency of the antenna as a whole are determined, slot 3
The numbers of a and 3b are almost fixed.
この発明の導波管形スロツトアレイアンテナは
前述の欠点を除去したもので、その目的とすると
ころは性能向上にある。 The waveguide slot array antenna of the present invention eliminates the above-mentioned drawbacks, and its purpose is to improve performance.
第２図はこの発明の導波管形スロツトアレイア
ンテナの実施例を示す構成斜視図を示したもので
ある。図中、１は矩形導波管、２は短絡板、３
ａ，３ｂはスロツト、４は誘導性アイリスであ
る。ここで、通常の導波管形スロツトアレイアン
テナでは各矩形導波管１に特定の位相関係で給電
するための給電用導波管が必要であるが、説明の
簡略化のため省略している。 FIG. 2 is a perspective view showing an embodiment of the waveguide slot array antenna of the present invention. In the figure, 1 is a rectangular waveguide, 2 is a short circuit plate, and 3 is a rectangular waveguide.
a and 3b are slots, and 4 is an inductive iris. Here, a normal waveguide type slot array antenna requires a power feeding waveguide to feed power in a specific phase relationship to each rectangular waveguide 1, but this is omitted for the sake of brevity. There is.
この発明による導波管形スロツトアレイアンテ
ナについて、以下説明する。この発明による導波
管形スロツトアレイアンテナは、複数本の矩形導
波管１をＨ面が同一面に成るように並べ、各矩形
導波管１のＨ面に複数個のスロツト３ａ，３ｂを
形成し、短絡板２と隣接しないスロツト３ｂの両
側でかつ矩形導波管１内に誘導性アイリス４を形
成して実現している。 The waveguide slot array antenna according to the present invention will be explained below. In the waveguide slot array antenna according to the present invention, a plurality of rectangular waveguides 1 are arranged so that their H planes are on the same plane, and a plurality of slots 3a, 3b are formed in the H plane of each rectangular waveguide 1. This is realized by forming an inductive iris 4 inside the rectangular waveguide 1 on both sides of the slot 3b that is not adjacent to the shorting plate 2.
このような構成にすることにより、従来のよう
にスロツト３ａ，３ｂ数がアンテナの面積及び周
波数に制限されることなく、ある程度自由に増加
出来、アンテナの利得及びアンテナパターンを向
上させることが出来る。 By adopting such a configuration, the number of slots 3a and 3b can be increased to some extent without being limited by the area and frequency of the antenna as in the prior art, and the gain and antenna pattern of the antenna can be improved.
この説明に入る前の都合上、次の事を定義す
る。 For convenience, before going into this explanation, we will define the following.
矩形導波管１の管軸方向をＸ方向、矩形導波管
１の並んでいる方向をＹ方向と呼ぶ。 The tube axis direction of the rectangular waveguide 1 is called the X direction, and the direction in which the rectangular waveguides 1 are lined up is called the Y direction.
説明にもどると、Ｙ方向のスロツト３ａ，３ｂ
の相互間隔は各矩形導波管１のＨ面横寸法で決ま
り、Ｙ方向のスロツト３ａ，３ｂ数を増加させた
い場合には矩形導波管１のＨ面横寸法を（基本モ
ードがカツトオフに成らない条件下で）狭くすれ
ば良い。 Returning to the explanation, the slots 3a and 3b in the Y direction
The mutual spacing is determined by the H-plane lateral dimension of each rectangular waveguide 1. If you want to increase the number of slots 3a, 3b in the Y direction, change the H-plane lateral dimension of the rectangular waveguide 1 (when the fundamental mode is cut-off). (under conditions where it does not occur).
次にこの場合におけるＸ方向のスロツト３ａ，
３ｂ数について考えてみる。従来の導波管形スロ
ツトアレイアンテナでは矩形導波管１の管内波長
が長く成つたことによりＸ方向のスロツト３ａ，
３ｂ数は少なくなるが、この発明による導波管形
スロツトアレイアンテナでは誘導性アイリス４に
より、Ｘ方向のスロツト３ａ，３ｂの間隔を見掛
上狭く出来、Ｘ方向のスロツト３ａ，３ｂ数を増
加出来る。 Next, in this case, the slot 3a in the X direction,
Let's think about the 3b number. In the conventional waveguide type slot array antenna, since the inner wavelength of the rectangular waveguide 1 has become longer, the slots 3a in the X direction,
Although the number of slots 3b is reduced, in the waveguide slot array antenna according to the present invention, the inductive iris 4 allows the gap between the slots 3a and 3b in the X direction to be narrower, and the number of slots 3a and 3b in the X direction can be reduced. It can be increased.
ここで、上述の誘導性アイリス４によりＸ方向
のスロツト３ａ，３ｂの間隔が見掛上狭く出来る
と云う点について補足する。第３図ａは矩形導波
管１に誘導性アイリス４を２個離して形成した時
の等価回路を示す。図中５は矩形導波管１で実現
された伝送線路、６は誘導性アイリス４で実現さ
れたサセプタンスである。第３図ｂは第３図ａで
示される等価回路の共振条件を示す。図中、７は
サセプタンス６を変化させた時の伝送線路５の長
さすなわち共振器長の関係を示す特性曲線であ
る。 Here, we will supplement the point that the above-mentioned inductive iris 4 allows the gap between the slots 3a and 3b in the X direction to be apparently narrower. FIG. 3a shows an equivalent circuit when two inductive irises 4 are formed in a rectangular waveguide 1 separated from each other. In the figure, 5 is a transmission line realized by a rectangular waveguide 1, and 6 is a susceptance realized by an inductive iris 4. FIG. 3b shows the resonance conditions of the equivalent circuit shown in FIG. 3a. In the figure, 7 is a characteristic curve showing the relationship between the length of the transmission line 5, that is, the resonator length, when the susceptance 6 is changed.
第３図ａ，ｂから判るように、伝送線路５に区
間l′離して誘導性のサセプタンス６を装着するこ
とにより、短絡板２を用いた場合（サセプタンス
∞の場合）より共振器長l′を小さく出来る。 As can be seen from FIGS. 3a and 3b, by attaching the inductive susceptance 6 to the transmission line 5 at a distance l', the resonator length l' is shorter than when the shorting plate 2 is used (susceptance ∞). can be made smaller.
この発明による導波管形スロツトアレイアンテ
ナは上述の効果を利用したもので、短絡板２に隣
接しないスロツト３ｂの両側に誘導性アイリス４
を形成することにより短区間で共振器が実現出
来、これに結合するスロツト３ａ，３ｂの間隔も
狭く出来る。この場合、誘導性アイリス４にはさ
まれたスロツト３ｂと他の短絡板２に隣接するス
ロツト３ａとは矩形導波管１内で発生する定在波
への結合条件が異るため、各スロツト３ａ，３ｂ
と同位相としたい場合には、スロツト３ｂはスロ
ツト３ａより長さを短くする必要がある。 The waveguide slot array antenna according to the present invention utilizes the above-mentioned effect, and has inductive irises 4 on both sides of the slot 3b that are not adjacent to the shorting plate 2.
By forming the resonator, a resonator can be realized in a short section, and the interval between the slots 3a and 3b connected to the resonator can be narrowed. In this case, since the slot 3b sandwiched between the inductive iris 4 and the slot 3a adjacent to the other shorting plate 2 have different coupling conditions to the standing wave generated within the rectangular waveguide 1, each slot 3a, 3b
If the same phase is desired, the length of the slot 3b needs to be shorter than that of the slot 3a.
以上のようにこの発明による導波管形スロツト
アレイアンテナではスロツト３ｂの両側に形成し
た誘導性アイリス４により、アンテナの面積，周
波数にあまり影響されることなくスロツト３ａ，
３ｂの数が増加出来、アンテナの利得の向上はも
とより、スロツト３ａ，３ｂの増加によりアンテ
ナ開口分布が比較的連続して制御出来るため良好
なアンテナパターンが得られる。 As described above, in the waveguide type slot array antenna according to the present invention, the inductive iris 4 formed on both sides of the slot 3b allows the slot 3a,
The number of slots 3b can be increased, and not only the gain of the antenna can be improved, but also the antenna aperture distribution can be controlled relatively continuously by increasing the number of slots 3a and 3b, so that a good antenna pattern can be obtained.
なお、実施例では矩形導波管１のＨ面にスロツ
ト３ａ，３ｂを形成した場合、あるいは誘導性ア
イリス４を用いた場合について説明したが、これ
に限定されることなく、矩形導波管のＥ面にスロ
ツトを形成した場合、あるいは誘導性ポストを用
いた場合にも利用出来る。 In addition, in the embodiment, the case where the slots 3a and 3b were formed on the H-plane of the rectangular waveguide 1 or the case where the inductive iris 4 was used was explained, but the present invention is not limited to this, and It can also be used when a slot is formed on the E side or when an inductive post is used.
第１図は従来の導波管形スロツトアレイアンテ
ナの構成斜視図、第２図はこの発明による導波管
形スロツトアレイアンテナの実施例を示す構成斜
視図、第３図ａは矩形導波管内に２個の誘導性ア
イリスを離して形成した時の等価回路図、第３図
ｂは第３図ａで示される等価回路の共振条件を示
す図であり、図中１は矩形導波管、２は短絡板、
３ａ，３ｂはスロツト、４は誘導性アイリス、５
は伝送線路、６はサセプタンス、７は特性曲線で
ある。なお、図中、同一あるいは相当部分には同
一符号を付して示してある。
FIG. 1 is a perspective view of a conventional waveguide slot array antenna, FIG. 2 is a perspective view of a waveguide slot array antenna according to an embodiment of the present invention, and FIG. 3a is a rectangular waveguide slot array antenna. An equivalent circuit diagram when two inductive irises are formed separately in a wave tube, and FIG. 3b is a diagram showing the resonance conditions of the equivalent circuit shown in FIG. 3a. In the figure, 1 is a rectangular waveguide. pipe, 2 is a shorting plate,
3a, 3b are slots, 4 is an inductive iris, 5
is a transmission line, 6 is a susceptance, and 7 is a characteristic curve. In the drawings, the same or corresponding parts are denoted by the same reference numerals.
Claims (1)
をＨ面が同一面に成るように並べ、各矩形導波管
のＨ面に複数個のスロツトを形成して成る導波管
形スロツトアレイアンテナにおいて、矩形板と隣
接しないスロツトの両側で、かつ同一矩形導波管
に形成したスロツト間の矩形導波管内に誘導性ア
イリス又は誘導性ポストを設けた事を特徴とする
導波管形スロツトアレイアンテナ。 ２ 誘導性アイリス又は誘導性ポストにはさまれ
たスロツトの長さを短絡板と隣接するスロツトの
長さより短くした事を特徴とする特許請求の範囲
第１項記載の導波管形スロツトアレイアンテナ。[Claims] 1 A plurality of rectangular waveguides whose ends are short-circuited by short-circuit plates are arranged so that their H-planes are on the same plane, and a plurality of slots are formed in the H-plane of each rectangular waveguide. In the waveguide-type slot array antenna consisting of a rectangular waveguide, an inductive iris or an inductive post is provided on both sides of the slots that are not adjacent to the rectangular plate and within the rectangular waveguide between the slots formed in the same rectangular waveguide. Features a waveguide slot array antenna. 2. The waveguide slot array according to claim 1, characterized in that the length of the slot sandwiched between the inductive iris or the inductive post is shorter than the length of the slot adjacent to the shorting plate. antenna.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3496982A JPS58151705A (en) | 1982-03-05 | 1982-03-05 | Waveguide type slot array antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3496982A JPS58151705A (en) | 1982-03-05 | 1982-03-05 | Waveguide type slot array antenna |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58151705A JPS58151705A (en) | 1983-09-09 |
| JPS6319086B2 true JPS6319086B2 (en) | 1988-04-21 |
Family
ID=12428965
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3496982A Granted JPS58151705A (en) | 1982-03-05 | 1982-03-05 | Waveguide type slot array antenna |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58151705A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04121471A (en) * | 1990-09-10 | 1992-04-22 | Toyama Parts:Kk | Displacement type pump |
| US20170357015A1 (en) * | 2016-06-12 | 2017-12-14 | Shanghai United Imaging Healthcare Co., Ltd | System and method for image reconstruction in positron emission tomography |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5010351A (en) * | 1990-02-08 | 1991-04-23 | Hughes Aircraft Company | Slot radiator assembly with vane tuning |
| US5717410A (en) * | 1994-05-20 | 1998-02-10 | Mitsubishi Denki Kabushiki Kaisha | Omnidirectional slot antenna |
| JP4637939B2 (en) * | 2008-08-11 | 2011-02-23 | 京セラ株式会社 | Stacked aperture array antenna |
| JP6505582B2 (en) * | 2015-11-12 | 2019-04-24 | 株式会社フジクラ | Resonator antenna device |
| US10263465B2 (en) * | 2015-12-17 | 2019-04-16 | Witricity Corporation | Radiative wireless power transmission |
| AT518790B1 (en) | 2017-02-21 | 2018-01-15 | Blum Gmbh Julius | Connecting pin for furniture parts |
| JP7409778B2 (en) * | 2019-03-19 | 2024-01-09 | 日本特殊陶業株式会社 | waveguide slot antenna |
-
1982
- 1982-03-05 JP JP3496982A patent/JPS58151705A/en active Granted
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04121471A (en) * | 1990-09-10 | 1992-04-22 | Toyama Parts:Kk | Displacement type pump |
| US20170357015A1 (en) * | 2016-06-12 | 2017-12-14 | Shanghai United Imaging Healthcare Co., Ltd | System and method for image reconstruction in positron emission tomography |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58151705A (en) | 1983-09-09 |
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