JP2008109197A - Ridge waveguide center feed slot array antenna - Google Patents

Ridge waveguide center feed slot array antenna Download PDF

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JP2008109197A
JP2008109197A JP2006287625A JP2006287625A JP2008109197A JP 2008109197 A JP2008109197 A JP 2008109197A JP 2006287625 A JP2006287625 A JP 2006287625A JP 2006287625 A JP2006287625 A JP 2006287625A JP 2008109197 A JP2008109197 A JP 2008109197A
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waveguide
feed
ridge
radiation
slot
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JP4531033B2 (en
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Yasuhiro Tsunemitsu
康弘 常光
Naohisa Goto
尚久 後藤
Makoto Ando
真 安藤
Jiro Hirokawa
二郎 廣川
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Japan Radio Co Ltd
Tokyo Institute of Technology NUC
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Tokyo Institute of Technology NUC
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a center feed offset array antenna such that slot arrays of offset arrays of radiation waveguides on both sides of a feed waveguide are symmetrical across the feed waveguide and the width of the feed waveguide is narrow. <P>SOLUTION: A ridge along a tube axis is provided at a center position of the feed waveguide in a bottom width direction. Electrical field vectors on the right and left sides of the ridge are symmetrical in right-left relation because of the ridge. Consequently, the right and left radiation waveguides are fed in in-phase relation. Further, the cutoff frequency of the waveguides decreases since the ridge is provided, so when it is assumed that an in-use frequency does not vary and the cutoff frequency may be the same, the cutoff frequency can be raised by the decrement and the size of the feed waveguide is reducible in size, so that width of the feed waveguide can be made narrower. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、中央給電導波路型平面スロットアンテナの給電導波路構造とスロットアレーの配置に関する。   The present invention relates to a feed waveguide structure and a slot array arrangement of a central feed waveguide type planar slot antenna.

従来、中央給電スロットアレーアンテナにおいては、両側の放射導波路への給電は、給電導波路のＥ面から行われていた。そのため同相給電であった。
図３はその給電構造を示す図であり、（ａ）はスロット板を除いた平面図、（ｂ）はその断面図である。
即ち、給電導波路８の幅はＨ面（広壁面）の幅となっていた。
このため、スロット板の給電導波路の幅に対応する部分には、スロットを設けることができず、結局、アンテナの中央帯にスロットのないエリア（ブロッキングエリア）が生じ、スロット配列の一様性が不完全となりサイドローブなどアンテナの特性に悪影響をもたらしていた。そこで、このブロッキングエリアを小さくする工夫として、通常の矩形導波路はＥ面の幅がＨ面の幅より小さいことに着目して、給電導波路を、図３の（ｂ）において、紙面に垂直な軸を中心にして９０度回転して、放射導波路への給電（結合）をＨ面で行うようにした。 Conventionally, in a centrally fed slot array antenna, feeding to the radiation waveguides on both sides has been performed from the E plane of the feeding waveguide. Therefore, it was in-phase power feeding.
3A and 3B are diagrams showing the power feeding structure, wherein FIG. 3A is a plan view excluding the slot plate, and FIG. 3B is a cross-sectional view thereof.
That is, the width of the feed waveguide 8 is the width of the H plane (wide wall surface).
For this reason, a slot cannot be provided in a portion corresponding to the width of the feed waveguide of the slot plate, and eventually an area without a slot (blocking area) is generated in the central band of the antenna, and the uniformity of the slot arrangement Became incomplete and had adverse effects on antenna characteristics such as side lobes. Therefore, as a device for reducing the blocking area, attention is paid to the fact that the width of the E plane of the normal rectangular waveguide is smaller than the width of the H plane, and the feed waveguide is perpendicular to the paper surface in FIG. By rotating 90 degrees around the axis, feeding (coupling) to the radiation waveguide is performed on the H plane.

図４はＨ面結合の断面を示す図であり、図３の（ｂ）に対応する。
これにより平面で見た給電導波路の幅は狭くなり、その分だけブロッキングエリアが小さくなり、アンテナの特性は改善されるようになった（例えば、特許文献１参照）。
特願２００４−２１２９０９号公報（図４、図１、図２） FIG. 4 is a view showing a cross section of H-plane coupling, and corresponds to FIG.
As a result, the width of the feed waveguide as viewed in a plane is narrowed, the blocking area is reduced accordingly, and the antenna characteristics are improved (for example, see Patent Document 1).
Japanese Patent Application No. 2004-212909 (FIGS. 4, 1 and 2)

上記のように、左右の放射導波路への給電を給電導波路のＨ面で行うようにしたため、給電導波路内における電界ベクトルの垂直成分の向きは、給電導波路の中央の左右では逆向きとなるため、左右の放射導波路９への給電は逆相になる。   As described above, since the power supply to the left and right radiation waveguides is performed on the H plane of the power supply waveguide, the direction of the vertical component of the electric field vector in the power supply waveguide is opposite on the left and right in the center of the power supply waveguide. Therefore, the power supply to the left and right radiation waveguides 9 is in reverse phase.

一方、スロット板においてスロットの配列が、図５のように放射導波路９の管軸方向に沿って、幅中心線に対して左右交互にオフセットしつつ配列されるものである場合に、各スロットから放射される電磁波が同相であるようにするためには、給電が逆相であるので、給電導波路１１から１番目同士のスロットの、放射導波路９の管軸方向中心線に対するオフセットは互いに逆側にオフセットさせなければならない。以下、２番目同士、３番目同士、それ以後についても同様である。
その結果、図５のような、給電導波路１１の両側で対称にならないスロット配列となる。 On the other hand, when the slot arrangement in the slot plate is arranged while being alternately offset from the left and right with respect to the width center line along the tube axis direction of the radiation waveguide 9 as shown in FIG. In order for the electromagnetic waves radiated from the in-phase to be in phase, the feed is in reverse phase, so the offset of the first slot from the feed waveguide 11 relative to the center line in the tube axis direction of the radiation waveguide 9 is mutually Must be offset to the opposite side. The same applies to the second, third, and the following.
As a result, as shown in FIG. 5, the slot arrangement is not symmetrical on both sides of the feed waveguide 11.

ところが、このようなアンテナ２個を図６のようにアンテナの開口面中心法線を軸として偏波面を９０度回転させて隣接配置し、直交偏波アンテナとして用いようとした場合、左側のアンテナの、給電導波路１１を挟む或る放射導波路の１番目同士のスロットから右側のアンテナの中心までの２つ距離、例えばｒ１とｒ２にはオフセットが逆であるため差がある。これは２番目同士以降の全スロットについても同様である。
図６の左側アンテナを送信アンテナ、右側アンテナを受信アンテナとした場合、送信アンテナから受信アンテナ方向への主偏波は送信アンテナの給電導波路１１を中心軸として上下で振幅は対称となるが、距離ｒ１、ｒ２との差により受信アンテナ方向への電波が到達する位相差が生じる。右側の受信アンテナにおいて、左側の送信アンテナからの主偏波は交差偏波として受信する。受信アンテナの給電導波路１１に垂直で中心点を通る対称線Ａ−Ａ′の上下で交差偏波の受信感度は逆位相で等振幅である。送信アンテナのスロット配置が対称でｒ１、ｒ２の距離に差が無ければ、送信アンテナからの主偏波成分を受信アンテナの交差偏波成分として受信し、キャンセルされるので極めて高いアイソレーション特性を得ることができる（例えば、特願２００５−３５５６２３号（［００２８］、［００３０］、図２、図３（ａ）、図３（ｂ））参照）。
しかし、送信アンテナの給電導波路１１を挟んだスロットは逆向きにオフセットされているため、ｒ１、ｒ２の距離による位相差を生じるため、キャンセルされない。
このため、左右両アンテナ間の偏波間のアイソレーションが充分とれないという問題を生じた。 However, when two such antennas are arranged adjacent to each other by rotating the plane of polarization by 90 degrees about the aperture normal center of the antenna as shown in FIG. However, there is a difference between the two distances from the first slot of a radiation waveguide sandwiching the feeding waveguide 11 to the center of the right antenna, for example, r 1 and r 2 because the offsets are opposite. The same applies to all slots after the second.
When the left antenna in FIG. 6 is a transmitting antenna and the right antenna is a receiving antenna, the main polarization from the transmitting antenna to the receiving antenna is symmetric in amplitude up and down around the feeding waveguide 11 of the transmitting antenna. The difference between the distances r 1 and r 2 causes a phase difference in which radio waves reach the receiving antenna. In the right receiving antenna, the main polarization from the left transmitting antenna is received as a cross polarization. The reception sensitivities of the cross polarized waves above and below the symmetry line AA ′ perpendicular to the feeding waveguide 11 of the receiving antenna and passing through the center point are opposite in phase and equal in amplitude. If the slot arrangement of the transmission antenna is symmetrical and there is no difference between the distances r 1 and r 2 , the main polarization component from the transmission antenna is received as the cross-polarization component of the reception antenna and canceled, so extremely high isolation characteristics (See, for example, Japanese Patent Application No. 2005-355623 ([0028], [0030], FIG. 2, FIG. 3 (a), FIG. 3 (b))).
However, since the slot sandwiching the feeding waveguide 11 of the transmitting antenna is offset in the reverse direction, a phase difference is caused by the distances r 1 and r 2 , so that it is not canceled.
For this reason, there arises a problem that sufficient isolation between the polarized waves between the left and right antennas cannot be obtained.

本発明の課題は、上記従来技術の問題点に鑑みて、給電導波路を挟んだスロットのオフセットを逆にしなくとも、即ち、給電導波路から左右両側の放射導波路への給電を同相で給電しつつも、給電導波路の幅、即ちブロッキングエリアを小さくできる中央給電スロットアレーアンテナを提供することにある。   In view of the above-mentioned problems of the prior art, the object of the present invention is to feed power from the feed waveguide to the left and right radiation waveguides in the same phase without reversing the offset of the slot sandwiching the feed waveguide. However, it is an object of the present invention to provide a central feed slot array antenna that can reduce the width of the feed waveguide, that is, the blocking area.

本発明は上記の課題を解決するために、以下の各構成を有する。
本発明の第１の構成は、給電導波路の管軸方向上等間隔を置いた複数の位置毎における左右両側の壁面の上側壁面寄りに、広幅方向が給電導波路の管軸方向と平行になるようにして結合された複数の放射導波路を有し、
給電導波路の底部幅方向中央には、管軸方向に沿ってリッジを有し、該リッジの峰部の、各放射導波路に対応する位置に切り込みが設けられており、
放射導波路の上面側広壁面にその管軸方向に沿って、幅中心線に対して左右交互にオフセットしつつ配列されたスロット配置が給電導波路を挟んで対称であることを特徴とするリッジ導波路中央給電スロットアレーアンテナである。 In order to solve the above problems, the present invention has the following configurations.
In the first configuration of the present invention, the wide width direction is parallel to the tube axis direction of the feed waveguide, close to the upper wall surfaces of the left and right wall surfaces at a plurality of positions spaced at equal intervals in the tube axis direction of the feed waveguide. A plurality of radiation waveguides coupled in such a way that
At the center in the width direction of the bottom of the feed waveguide, there is a ridge along the tube axis direction, and a notch is provided at a position corresponding to each radiation waveguide at the peak of the ridge,
Ridge characterized in that the slot arrangement arranged on the wide wall on the upper surface side of the radiation waveguide along the tube axis direction while being alternately offset to the left and right with respect to the width center line is symmetrical across the feed waveguide It is a waveguide center feed slot array antenna.

本発明の第２の構成は、前記第１の構成において、給電導波路および放射導波路が、板状導電性部材の１面に断面矩形状の溝を設けたベース体と、この溝の上に被せるように配置され、放射導波路用溝に沿ってスロットが配列されているスロット板とから成るものであることを特徴とするリッジ導波路中央給電スロットアレーアンテナである。   According to a second configuration of the present invention, in the first configuration, the feeding waveguide and the radiating waveguide include a base body in which a groove having a rectangular cross section is provided on one surface of the plate-like conductive member, and an upper surface of the groove. The ridge waveguide center-fed slot array antenna is characterized by comprising a slot plate arranged so as to cover the slot and having slots arranged along the grooves for the radiating waveguide.

本発明第１の構成においては、給電導波路の底部幅方向中央に管軸方向に沿うリッジを有しているため、給電導波路を管軸方向断面で見た場合の電界ベクトルの向きがリッジを挟んで左右対称となるので、給電導波路の左右両壁面で結合されている左側放射導波路および右側放射導波路への給電は同相となる。
従って、スロットの配列は、給電導波路から数えて同じ順位のスロットは放射導波路の幅中心線に対するオフセットは同じでよいこととなる。即ち、片側の放射導波路で見た場合のスロットは幅中心線に対して左右交互にオフセットしているが、給電導波路を挟んでは対称な位置関係になっている。 In the first configuration of the present invention, since the ridge along the tube axis direction is provided at the center in the bottom width direction of the feed waveguide, the direction of the electric field vector when the feed waveguide is viewed in the cross section in the tube axis direction is the ridge. Since the left and right wall surfaces of the feed waveguide are coupled to each other, the left and right radiation waveguides are fed in phase.
Therefore, the slots arranged in the same order as counted from the feed waveguide may have the same offset with respect to the width center line of the radiation waveguide. In other words, the slots when viewed from one side of the radiation waveguide are alternately offset to the left and right with respect to the width center line, but have a symmetrical positional relationship across the feed waveguide.

このようなアンテナを、図６のように偏波面を直交させて隣接配置した場合、左側のアンテナの給電導波路を挟んだ同じ列の放射導波路のスロットで給電導波路から同じ順番にあるスロットから右側アンテナの中心に到る距離は同一であり、左側アンテナの主偏波は右側アンテナの交差偏波として受信され、右側アンテナの対称線Ａ−Ａ′の上下において逆位相で受信された波は受信アンテナの中心点で重なり合い全てキャンセルされるため、偏波間のアイソレーションが充分とれることになる。   When such antennas are arranged adjacent to each other with the planes of polarization orthogonal to each other as shown in FIG. 6, the slots in the same row from the feed waveguides are the slots of the radiation waveguides in the same row sandwiching the feed waveguide of the left antenna. The distance from the center of the right antenna to the center of the right antenna is the same, the main polarization of the left antenna is received as a cross polarization of the right antenna, and the waves received in opposite phases above and below the symmetry line A-A ′ of the right antenna Are overlapped and canceled at the center point of the receiving antenna, so that the isolation between the polarized waves is sufficient.

また、リッジ導波管はリッジがない場合に較べて遮断周波数が低くなるので、用いる周波数が同じとすれば導波管の幅をリッジのない導波路を用いる場合より小さくすることができるので、給電導波路の底部にリッジを設けることにより、放射面で見た場合の給電導波路の幅を小さくすることができスロットを設けない領域（ブロッキングエリア）を小さくすることができ、サイドローブその他のアンテナ特性を向上させることができるという効果がある。   Also, since the cutoff frequency of the ridge waveguide is lower than when there is no ridge, if the same frequency is used, the width of the waveguide can be made smaller than when a waveguide without a ridge is used. By providing a ridge at the bottom of the feed waveguide, the width of the feed waveguide when viewed from the radiation surface can be reduced, and the area where the slot is not provided (blocking area) can be reduced. There is an effect that the antenna characteristics can be improved.

更に、リッジの峰部の、各放射導波路に対応する位置に切り込みを設けているので、この部分で反射が生ずるが、この反射が放射導波路からの反射を相殺するように作用するので、アンテナへの給電点から見た反射損失が少なくなるという効果がある。   Furthermore, since a notch is provided at a position corresponding to each radiation waveguide at the ridge of the ridge, reflection occurs at this portion, but this reflection acts to cancel the reflection from the radiation waveguide. There is an effect that the reflection loss seen from the feeding point to the antenna is reduced.

本発明アンテナにおける給電導波路の底部に立てるリッジの形状は、断面長方形の板状のものが、上面壁との間における平行電界を形成するうえで最良である。
また、リッジに設ける切り込みの形状は、コの字を上に向けた形の凹状形が反射を生じさせるうえで最良である。その位置は給電側から見て、各放射導波路の幅中心位置よりも遠い方に設けるのが放射導波路からの反射を相殺するうえで最良である。 The shape of the ridge standing on the bottom of the feed waveguide in the antenna of the present invention is best when a parallel-shaped electric field is formed between the plate and the top wall.
In addition, the shape of the notch provided in the ridge is best when a concave shape with a U-shaped upward is used to cause reflection. It is best to cancel the reflection from the radiation waveguide by providing the position farther than the center position of the width of each radiation waveguide when viewed from the feeding side.

以下、本発明のリッジ導波路中央給電スロットアレーアンテナの実施例を図面を参照して説明する。
図１は、本発明中央給電スロットアレーアンテナの、スロット板を除いた、給電導波路、放射導波路の部分斜視図である。
給電導波路２の底面の幅方向中央位置から板状のリッジ１が立っている。給電導波路２の両側面には放射導波路３Ａおよび放射導波路３Ｂが結合されており、各放射導波路３Ａ，３Ｂの底面と、結合部分両側にある結合窓形成突出部５と、図示されていないスロット板とによって形成される窓部分を通して、給電導波路２から各放射導波路３Ａ，３Ｂへ電磁波が給電される。図１では、給電導波路２の両側に放射導波路が１個ずつしか示されていないが、実際には給電導波路２は長くそれに沿って放射導波路も多数設けられる。放射導波路３Ａ，３Ｂの長さももっと長いものである。そしてこの上に図２で示されるようなスロット板が被せられる。スロットの列は各放射導波路に対応するようになっている。 Embodiments of the ridge waveguide center-fed slot array antenna of the present invention will be described below with reference to the drawings.
FIG. 1 is a partial perspective view of a feed waveguide and a radiation waveguide of a central feed slot array antenna of the present invention, excluding a slot plate.
A plate-shaped ridge 1 stands from the center in the width direction of the bottom surface of the power supply waveguide 2. A radiation waveguide 3A and a radiation waveguide 3B are coupled to both side surfaces of the feed waveguide 2, and a bottom surface of each radiation waveguide 3A, 3B and coupling window forming protrusions 5 on both sides of the coupling portion are illustrated. An electromagnetic wave is fed from the feed waveguide 2 to each of the radiation waveguides 3A and 3B through a window portion formed by the slot plate that is not. In FIG. 1, only one radiation waveguide is shown on each side of the feed waveguide 2, but in reality, the feed waveguide 2 is long and many radiation waveguides are provided along it. The lengths of the radiation waveguides 3A and 3B are also longer. Then, a slot plate as shown in FIG. 2 is placed thereon. A row of slots corresponds to each radiation waveguide.

このように、リッジ１が給電導波路２の底面の幅方向中央位置に立っているために、リッジ１の左右の電界の方向はリッジ１の左右で対称となるため、放射導波路３Ａへの給電と放射導波路３Ｂへの給電位相は同相となる。このため、給電導波路２を挟む１組の放射導波路に対応するスロットの、放射導波路幅中心線からのオフセットは、給電導波路の位置順位が同じスロットは同じ側にすればよいことになる。このことは結局、スロットの配置は給電導波路の中心に関して対称であることになる。   In this way, since the ridge 1 stands at the center position in the width direction of the bottom surface of the feed waveguide 2, the directions of the electric fields on the left and right of the ridge 1 are symmetric on the left and right of the ridge 1. The feeding phase and the feeding phase to the radiation waveguide 3B are in phase. For this reason, the slots corresponding to a pair of radiation waveguides sandwiching the feed waveguide 2 from the center line of the radiation waveguide width may be set so that slots having the same position order of the feed waveguides are on the same side. Become. This ultimately results in the slot arrangement being symmetrical about the center of the feed waveguide.

このことにより、本発明のアンテナを、偏波面を直交させて隣接配置して直交偏波アンテナを構成したときに、給電導波路を挟んだ１組の放射導波路の、給電導波路から数えて同じ順位位置の２つのスロットから隣接アンテナの中心点までの距離が等しくなるので対称性があるということになり、両アンテナ間の偏波アイソレーションが充分なものとなる。   As a result, when the antenna of the present invention is arranged adjacently with the polarization planes orthogonal to each other to form an orthogonal polarization antenna, the pair of radiation waveguides sandwiching the feed waveguide is counted from the feed waveguide. Since the distances from the two slots at the same position to the center point of the adjacent antenna are equal, there is symmetry, and polarization isolation between the two antennas is sufficient.

また、リッジを設けた給電導波路２の幅は、リッジを設けない通常の導波路を左右同相給電とするためＥ面給電とした場合の幅、即ちＨ面幅よりは小さくできるので、スロットを設けられないブロッキングエリアが小さくなり、サイドローブ抑圧等の性能も向上できる。   In addition, the width of the feed waveguide 2 provided with the ridge can be made smaller than the width of the E plane feed, that is, the width of the H plane, in order to make the normal waveguide without the ridge the left and right in-phase feed. A blocking area that is not provided is reduced, and performance such as sidelobe suppression can be improved.

放射導波路からの反射損を相殺するための切り込み４は、その相殺効果を上げるため、給電導波路２への給電が左側矢印の方から行われるとしたならば、放射導波路３Ａ，３Ｂの幅中心位置より矢印方向にずれた位置に設けられている。   The notch 4 for canceling the reflection loss from the radiation waveguide increases the canceling effect. If the feed to the feed waveguide 2 is performed from the left arrow direction, the notches 4 of the radiation waveguides 3A and 3B are provided. It is provided at a position shifted in the arrow direction from the width center position.

図２は、本発明アンテナにおけるスロット板のスロット配置の実施例を示す図である。
各スロットの配置は、各放射導波路の幅中心線を挟んで交互にオフセットしているが、このオフセットの仕方は給電導波路２を挟んで対称となるように配置されている。
その理由は、給電導波路２から両側の放射導波路への給電が同相で行われていることによるものである。
このような対称配列とすることにより、直交偏波アンテナとして用いた場合の偏波間アイソレーションが充分とれるようになることは前述した通りである。 FIG. 2 is a diagram showing an embodiment of slot arrangement of slot plates in the antenna of the present invention.
The slots are alternately offset across the width center line of each radiation waveguide. The offset is arranged so as to be symmetric with respect to the feed waveguide 2.
The reason is that the feeding from the feeding waveguide 2 to the radiation waveguides on both sides is performed in the same phase.
As described above, by using such a symmetric arrangement, it is possible to obtain sufficient isolation between polarized waves when used as an orthogonally polarized antenna.

本発明中央給電スロットアレーアンテナの、スロット板を除いた、給電導波路、放射導波路の部分斜視図である。FIG. 3 is a partial perspective view of a feed waveguide and a radiation waveguide of the central feed slot array antenna of the present invention, excluding a slot plate. 本発明アンテナにおけるスロット板のスロット配置の実施例を示す斜視図である。It is a perspective view which shows the Example of the slot arrangement | positioning of the slot board in this invention antenna. 従来の、放射導波路への給電が給電導波路の狭壁面から行われていた給電構造を示す図である。It is a figure which shows the electric power feeding structure where the electric power feeding to the radiation waveguide was performed from the narrow wall surface of the electric power feeding waveguide conventionally. 従来の、放射導波路への給電が給電導波路の広壁面から行われていた給電構造を示す図である。It is a figure which shows the electric power feeding structure where the electric power feeding to the radiation waveguide of the past was performed from the wide wall surface of the electric power feeding waveguide. 従来の、放射導波路への給電が図４のように給電導波路の広壁面から行われる場合のスロットの配置を示す斜視図である。FIG. 5 is a perspective view showing a slot arrangement in the case where the conventional feeding to the radiation waveguide is performed from the wide wall surface of the feeding waveguide as shown in FIG. 4. 図５のスロット配列のアンテナを偏波面を直交させて隣接配置した場合の偏波アイソレーションが不充分になることの説明図である。FIG. 6 is an explanatory diagram showing that polarization isolation becomes insufficient when antennas having the slot arrangement of FIG. 5 are arranged adjacent to each other with their polarization planes orthogonal to each other.

符号の説明Explanation of symbols

１ リッジ
２ 給電導波路
３Ａ 放射導波路
３Ｂ 放射導波路
４ 切り込み
５ 結合窓形成突出部
６ スロット板
７ スロット
８ 給電導波路
９ 放射導波路
１０ 結合窓
１１ 給電導波路
１２ スロット板
１３ 誘導性ポスト DESCRIPTION OF SYMBOLS 1 Ridge 2 Feeding waveguide 3A Radiation waveguide 3B Radiation waveguide 4 Cut 5 Coupling window formation protrusion 6 Slot plate 7 Slot 8 Feed waveguide 9 Radiation waveguide 10 Coupling window 11 Feed waveguide 12 Slot plate 13 Inductive post

Claims (2)

給電導波路の管軸方向上等間隔を置いた複数の位置毎における左右両側の壁面の上側壁面寄りに、広幅方向が給電導波路の管軸方向と平行になるようにして結合された複数の放射導波路を有し、
給電導波路の底部幅方向中央には、管軸方向に沿ってリッジを有し、該リッジの峰部の、各放射導波路に対応する位置に切り込みが設けられており、
放射導波路の上面側広壁面にその管軸方向に沿って、幅中心線に対して左右交互にオフセットしつつ配列されたスロット配置が給電導波路を挟んで対称であることを特徴とするリッジ導波路中央給電スロットアレーアンテナ。 Near the upper wall surfaces of the left and right wall surfaces at a plurality of positions spaced at equal intervals in the tube axis direction of the feed waveguide, a plurality of pieces coupled so that the width direction is parallel to the tube axis direction of the feed waveguide A radiation waveguide;
At the center in the width direction of the bottom of the feed waveguide, there is a ridge along the tube axis direction, and a notch is provided at a position corresponding to each radiation waveguide at the peak of the ridge,
Ridge characterized in that the slot arrangement arranged on the wide wall on the upper surface side of the radiation waveguide along the tube axis direction while being alternately offset to the left and right with respect to the width center line is symmetrical across the feed waveguide Waveguide center-fed slot array antenna. 給電導波路および放射導波路が、板状導電性部材の１面に断面矩形状の溝を設けたベース体と、この溝の上に被せるように配置され、放射導波路用溝に沿ってスロットが配列されているスロット板とから成るものであることを特徴とする請求項１記載のリッジ導波路中央給電スロットアレーアンテナ。   The feed waveguide and the radiation waveguide are arranged so as to cover the groove on the one surface of the plate-like conductive member with a rectangular cross-section, and the slot is provided along the groove for the radiation waveguide. The ridge waveguide center-fed slot array antenna according to claim 1, wherein the ridge waveguide center-feed slot array antenna is formed of a slot plate on which are arranged.
JP2006287625A 2006-10-23 2006-10-23 Ridge waveguide center-fed slot array antenna Active JP4531033B2 (en)

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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010268212A (en) * 2009-05-14 2010-11-25 Mitsubishi Electric Corp Waveguide slot array antenna device
JP2012204975A (en) * 2011-03-24 2012-10-22 Sumitomo Electric Ind Ltd Waveguide slot antenna
CN106941204A (en) * 2017-05-03 2017-07-11 成都赛纳为特科技有限公司 The ridge transmission line of perforate on ridge
CN107039725A (en) * 2017-05-03 2017-08-11 成都赛纳为特科技有限公司 A kind of broadband ridge transmission line coupling structure filter circuit
JP2017147725A (en) * 2016-02-12 2017-08-24 日本電産エレシス株式会社 Waveguide device and antenna device including the same
CN107134618A (en) * 2017-05-03 2017-09-05 成都赛纳为特科技有限公司 The ridge transmission line structure of bottom opening
CN107146936A (en) * 2017-05-03 2017-09-08 成都赛纳为特科技有限公司 A kind of microwave radiometer based on broadband ridge transmission line coupling structure
CN108598645A (en) * 2017-11-30 2018-09-28 安徽四创电子股份有限公司 A kind of coupled structure of ridge waveguide to rectangular waveguide
CN111384596A (en) * 2018-12-27 2020-07-07 日本电产株式会社 Antenna device, radar system, and communication system
CN114144937A (en) * 2019-07-23 2022-03-04 维宁尔美国公司 Meandering waveguide ridge and related sensor assembly

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63283202A (en) * 1987-05-15 1988-11-21 Yagi Antenna Co Ltd Microwave line equipment
JP2006033697A (en) * 2004-07-21 2006-02-02 Japan Radio Co Ltd Central power feeding waveguide type planar slot antenna
JP2006203541A (en) * 2005-01-20 2006-08-03 Japan Radio Co Ltd Cross polarization communication system
JP2006229679A (en) * 2005-02-18 2006-08-31 Japan Radio Co Ltd Power distributor for center-feed waveguide termination

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63283202A (en) * 1987-05-15 1988-11-21 Yagi Antenna Co Ltd Microwave line equipment
JP2006033697A (en) * 2004-07-21 2006-02-02 Japan Radio Co Ltd Central power feeding waveguide type planar slot antenna
JP2006203541A (en) * 2005-01-20 2006-08-03 Japan Radio Co Ltd Cross polarization communication system
JP2006229679A (en) * 2005-02-18 2006-08-31 Japan Radio Co Ltd Power distributor for center-feed waveguide termination

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010268212A (en) * 2009-05-14 2010-11-25 Mitsubishi Electric Corp Waveguide slot array antenna device
JP2012204975A (en) * 2011-03-24 2012-10-22 Sumitomo Electric Ind Ltd Waveguide slot antenna
JP2017147725A (en) * 2016-02-12 2017-08-24 日本電産エレシス株式会社 Waveguide device and antenna device including the same
CN106941204A (en) * 2017-05-03 2017-07-11 成都赛纳为特科技有限公司 The ridge transmission line of perforate on ridge
CN107039725A (en) * 2017-05-03 2017-08-11 成都赛纳为特科技有限公司 A kind of broadband ridge transmission line coupling structure filter circuit
CN107134618A (en) * 2017-05-03 2017-09-05 成都赛纳为特科技有限公司 The ridge transmission line structure of bottom opening
CN107146936A (en) * 2017-05-03 2017-09-08 成都赛纳为特科技有限公司 A kind of microwave radiometer based on broadband ridge transmission line coupling structure
CN108598645A (en) * 2017-11-30 2018-09-28 安徽四创电子股份有限公司 A kind of coupled structure of ridge waveguide to rectangular waveguide
CN111384596A (en) * 2018-12-27 2020-07-07 日本电产株式会社 Antenna device, radar system, and communication system
CN114144937A (en) * 2019-07-23 2022-03-04 维宁尔美国公司 Meandering waveguide ridge and related sensor assembly

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