JP2003188601A - Waveguide plate and high frequency device - Google Patents
Waveguide plate and high frequency deviceInfo
- Publication number
- JP2003188601A JP2003188601A JP2001386214A JP2001386214A JP2003188601A JP 2003188601 A JP2003188601 A JP 2003188601A JP 2001386214 A JP2001386214 A JP 2001386214A JP 2001386214 A JP2001386214 A JP 2001386214A JP 2003188601 A JP2003188601 A JP 2003188601A
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- waveguide
- waveguides
- frequency
- signal
- free space
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Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、ＵＨＦ,ＶＨＦ
帯、マイクロ波帯及びミリ波帯等の高周波信号を伝送す
る単一もしくは複数導波管接続構造に関するものであ
る。TECHNICAL FIELD The present invention relates to UHF and VHF.
The present invention relates to a single or multiple waveguide connection structure for transmitting a high frequency signal such as a band, a microwave band and a millimeter wave band.
【０００２】[0002]
【従来の技術】図３は、従来の導波管プレートの一例を
示す上面図である。図４は、図３のＡ部の詳細図であ
る。図において、１a，１bは対向する導波管プレート、
２は２つの導波管プレートの当たり面、３は当たり面に
掘り込みを設けることにより構成したチョーク構造、４
は２つの導波管プレートの隙間、１０a〜１２a，１０b
は複数の導波管を示している。2. Description of the Related Art FIG. 3 is a top view showing an example of a conventional waveguide plate. FIG. 4 is a detailed view of part A of FIG. In the figure, 1a and 1b are opposite waveguide plates,
Reference numeral 2 is a contact surface of two waveguide plates, 3 is a choke structure formed by forming a recess on the contact surface, 4
Is a gap between two waveguide plates, 10a to 12a, 10b
Indicates a plurality of waveguides.
【０００３】次に動作について説明する。導波管プレー
ト１a及び１bは板厚方向にＵＨＦ,ＶＨＦ帯、マイクロ
波帯及びミリ波帯等の各周波数帯の高周波信号を導波管
モードで伝送する導波管１０a及び１０bが対向して単一
もしくは複数設けられており、例えば、図示しない高周
波帯のモジュールとアンテナ、高周波モジュール同士、
あるいは高周波モジュールと導波管治具などの一部に導
波管接続構造として用いられ、導波管１０aから１０ｂ
へ高周波信号を伝送させる。この際、２つの導波管プレ
ートの隙間４が発生した場合に、導波管１０aから１０
ｂへの高周波信号の伝送特性が劣化するため、導波管プ
レート１ｂの当たり面側には、２つの導波管プレートの
密着性を高めるために、例えば機械加工により当たり面
２及び当たり面に掘り込みを形成したチョーク構造３
（以下、チョーク構造とする）が設けられている。Next, the operation will be described. The waveguide plates 1a and 1b face each other in the plate thickness direction with waveguides 10a and 10b facing each other for transmitting high-frequency signals in respective frequency bands such as UHF, VHF band, microwave band and millimeter wave band in a waveguide mode. A single or a plurality of are provided, for example, a high frequency band module and an antenna (not shown), high frequency modules,
Alternatively, the high-frequency module and a part of the waveguide jig are used as a waveguide connection structure, and the waveguides 10a to 10b are used.
To transmit a high frequency signal to. At this time, when the gap 4 between the two waveguide plates occurs, the waveguides 10a to 10a
Since the transmission characteristic of the high frequency signal to b is deteriorated, the contact surface side of the waveguide plate 1b is provided with a contact surface 2 and a contact surface by, for example, machining in order to improve the adhesion of the two waveguide plates. Chalk structure 3 with digging
(Hereinafter referred to as a choke structure) is provided.
【０００４】上記の当たり面は、２つの導波管プレート
に単一あるいは複数設けられた導波管同士の密着性を高
め、導波管内を伝送する高周波信号の良好な通過・反射
特性を得るために、例えば精度の高い機械加工により形
成される。しかし、十分な電気特性を得るためには、当
たり面の面粗度、平坦度の要求が厳しく、非常に精度の
高い機械加工が必要となり、高価な加工費がかかってし
まうという問題がある。また一般に、図示のチョーク構
造は導波管周囲の当たり面の密着性を高めるために用い
られているが、導波管周囲の当たり面の外周寸法（図３
の上面から見た場合の当たり面とチョークの境界の長
さ）によって決まる特定の周波数において共振を生じ
て、当該周波数において２つの導波管プレート間の導波
管内を伝送する高周波信号の良好な通過・反射特性が得
られないという問題がある。また、図３のように同一面
内に複数の導波管接続構造が設けられていた場合、上記
共振によって例えば２つの導波管１０b，１１ｂの結合
が生じて、隣接する導波管同士のアイソレーション特性
が得られないという問題も生じる。特に、伝送線路の通
過損失を低減するために、ミリ波帯（３０ＧＨｚ〜３０
０ＧＨｚ）では導波管が用いられるが、回路の小型化を
図るために上記チョーク構造は機械加工の限界値となる
数mm程度の寸法が選ばれるケースが多く、この数mmの寸
法はミリ波帯の信号周波数における自由空間伝搬波長の
寸法に近接してくるため、チョーク構造により共振が発
生しやすい。図５は、導波管を伝送する信号周波数ｆ0
がチョーク構造により発生する共振周波数となる場合
の、伝送線路の通過および反射特性を示す図であり、Ｓ
１１は反射損失、Ｓ２１は通過損失、Ｓ４１はアイソレ
ーションを示す。図において、信号周波数ｆ0がチョー
ク構造により発生する共振周波数となる前後において、
通過、反射及びアイソレーション特性が急峻に劣化する
のが判る。The above contact surface enhances the adhesion between the single or plural waveguides provided on the two waveguide plates and obtains good passage / reflection characteristics of the high frequency signal transmitted in the waveguides. Therefore, for example, it is formed by highly accurate machining. However, in order to obtain sufficient electric characteristics, the surface roughness and flatness of the contact surface are strictly required, and extremely accurate machining is required, which causes a problem of expensive processing cost. Further, although the choke structure shown in the figure is generally used to enhance the adhesion of the contact surface around the waveguide, the outer peripheral dimension of the contact surface around the waveguide (see FIG. 3).
Of the high frequency signal that is transmitted in the waveguide between the two waveguide plates at a certain frequency determined by the contact surface and the length of the choke boundary when viewed from above. There is a problem that the transmission / reflection characteristics cannot be obtained. Further, when a plurality of waveguide connection structures are provided in the same plane as shown in FIG. 3, for example, the two waveguides 10b and 11b are coupled to each other due to the resonance, and the adjacent waveguides are coupled to each other. There is also a problem that isolation characteristics cannot be obtained. In particular, in order to reduce the transmission loss of the transmission line, the millimeter wave band (30 GHz to 30 GHz
At 0 GHz), a waveguide is used, but in order to miniaturize the circuit, the above choke structure is often selected to have a size of several mm, which is the limit value for machining. Resonance is likely to occur due to the choke structure because it approaches the size of the free space propagation wavelength at the band signal frequency. FIG. 5 shows the signal frequency f 0 transmitted through the waveguide.
FIG. 4 is a diagram showing the transmission and reflection characteristics of a transmission line when S is a resonance frequency generated by a choke structure,
Reference numeral 11 represents reflection loss, S21 represents passage loss, and S41 represents isolation. In the figure, before and after the signal frequency f 0 becomes the resonance frequency generated by the choke structure,
It can be seen that the passing, reflection and isolation characteristics deteriorate sharply.
【０００５】[0005]
【発明が解決しようとする課題】従来の導波管プレート
は以上のように構成されており、必要な電気特性を得る
ために、各導波管プレートの当たり面に対して機械的に
非常に高い加工精度、平坦度が要求されていたため、加
工費が非常に高価であるという問題があった。また、複
数の導波管を同一平面内で接続する場合、隣接する導波
管において結合や共振によりアイソレーション特性が得
られないという問題があった。The conventional waveguide plate is constructed as described above, and in order to obtain the necessary electrical characteristics, the waveguide plate is mechanically extremely contacted with the contact surface of each waveguide plate. Since high processing accuracy and flatness were required, there was a problem that the processing cost was very high. Further, when a plurality of waveguides are connected in the same plane, there is a problem that isolation characteristics cannot be obtained due to coupling or resonance in adjacent waveguides.
【０００６】この発明は、上記のような問題点を解決す
るために為されたもので、当該構造によって発生する信
号帯域での共振を避け、隣接間の導波管の結合を抑圧す
ることができ、かつ、電気特性確保のために要求される
機械加工精度を大幅に緩和させることができる導波管接
続構造を得ることを目的とする。The present invention has been made in order to solve the above problems, and it is possible to avoid resonance in the signal band generated by the structure and suppress the coupling of the waveguides between adjacent ones. An object of the present invention is to obtain a waveguide connection structure that can be manufactured and that can significantly reduce the machining accuracy required for ensuring electrical characteristics.
【０００７】[0007]
【課題を解決するための手段】上記の目的を達成するた
めに、第1の発明の導波管プレートは、面方向に高周波
信号を伝送させるために形成した導波管を有する導波管
プレートにおいて、上記導波管長辺の導波管端から信号
周波数における自由空間伝搬波長の概略１／４オフセッ
トさせた位置に、信号周波数における自由空間伝搬波長
の概略１／４の幅と深さと少なくとも長辺以上の長さを
もつチョーク構造を有したものである。In order to achieve the above object, a waveguide plate of a first invention is a waveguide plate having a waveguide formed for transmitting a high frequency signal in a plane direction. At a position offset from the waveguide end on the long side of the waveguide by approximately 1/4 of the free space propagation wavelength at the signal frequency, at least a width and a depth of approximately 1/4 of the free space propagation wavelength at the signal frequency. It has a choke structure having a length equal to or longer than a side.
【０００８】また、第２の発明の導波管プレートは、面
方向に高周波信号を伝送させるために形成した複数の導
波管を有する導波管プレートにおいて、上記各々の導波
管長辺の導波管端から信号周波数における自由空間伝搬
波長の概略１／４オフセットさせた位置に、信号周波数
における自由空間伝搬波長の概略１／４の幅と深さと少
なくとも長辺以上の長さをもつチョーク構造を有したも
のである。The waveguide plate of the second invention is a waveguide plate having a plurality of waveguides formed for transmitting a high-frequency signal in a plane direction, and the waveguide long side of each of the above waveguides is guided. A choke structure having a width and a depth of approximately 1/4 of the free space propagation wavelength at the signal frequency and a length of at least a long side or more at a position offset from the end of the wave tube by approximately 1/4 of the free space propagation wavelength at the signal frequency. With.
【０００９】また、第３の発明の高周波装置は、上記第
１、第２のいずれかの発明の導波管プレートを搭載し、
導波管プレートとの間で入力もしくは出力されるミリ波
もしくはマイクロ波を送信または受信する手段を備えた
ものである。A high frequency device according to a third aspect of the present invention is equipped with the waveguide plate according to any one of the first and second aspects of the present invention,
It is provided with means for transmitting or receiving a millimeter wave or a microwave input or output to or from the waveguide plate.
【００１０】[0010]
【発明の実施の形態】実施の形態１．図１はこの発明の
実施の形態１を示す導波管プレートの上面図である。図
において、１a，１bは対向する導波管プレート、２は２
つの導波管プレートの当たり面、４は２つの導波管プレ
ートの隙間、１０a，１０bはそれぞれの導波管プレート
の板厚方向に形成された導波管、１００はチョークを示
している。BEST MODE FOR CARRYING OUT THE INVENTION Embodiment 1. 1 is a top view of a waveguide plate showing Embodiment 1 of the present invention. In the figure, 1a and 1b are waveguide plates facing each other, and 2 is 2
The contact surface of one waveguide plate, 4 is a gap between the two waveguide plates, 10a and 10b are waveguides formed in the thickness direction of the respective waveguide plates, and 100 is a choke.
【００１１】次に動作について説明する。図１におい
て、導波管プレート１a及び１bは板厚方向にＵＨＦ,Ｖ
ＨＦ帯、マイクロ波帯及びミリ波帯等の各周波数帯の高
周波信号を導波管モードで伝送する導波管１０a及び１
０bが対向して設けられており、異なる導波管を有する
筐体管の接続構造として用いられ、導波管１０aから１
０ｂへ高周波信号を伝送させる。この際、２つの導波管
プレートの隙間４が発生した場合に、導波管１０aから
１０ｂへの高周波信号の伝送特性が劣化するため、導波
管プレート１aの当たり面側には、２つの導波管１０aお
よび１０bの接続端面において電気的に短絡とするため
に、導波管１０ｂの長辺方向にチョーク１００が設けら
れている。Next, the operation will be described. In FIG. 1, the waveguide plates 1a and 1b are UHF, V in the plate thickness direction.
Waveguides 10a and 1 for transmitting a high frequency signal in each frequency band such as an HF band, a microwave band and a millimeter wave band in a waveguide mode.
0b are provided so as to face each other, and are used as a connection structure for housing tubes having different waveguides, and the waveguides 10a to 1
A high frequency signal is transmitted to 0b. At this time, when the gap 4 between the two waveguide plates is generated, the transmission characteristic of the high frequency signal from the waveguides 10a to 10b is deteriorated. A choke 100 is provided in the long side direction of the waveguide 10b to electrically short-circuit the connection end faces of the waveguides 10a and 10b.
【００１２】上記チョークは、導波管長辺の導波管端か
ら信号周波数における自由空間伝搬波長の概略１／４オ
フセットさせた位置に、信号周波数における自由空間伝
搬波長の概略１／４の幅と深さと少なくとも長辺以上の
長さをもつ掘り込みを設けた構造となっており、当該構
造により２つの導波管１０aおよび１０bの接続端面にお
いて導波管長辺の導波管端を等価的に電気的短絡点とす
る寸法となっている。この構造によって、２つの導波管
の接続面で生じる共振を避け、良好な通過・反射特性を
得ることができる。図１では、導波管長辺からのオフセ
ット長Ｄが伝搬波長λの概略１／４、掘り込みの幅Ｗ、
及び深さＨが伝搬波長λの概略１／４、長さＬが導波管
長辺よりも長くなるように設定し（例えば、信号周波数
が７６．５ＧＨｚ、伝搬波長λが３．９ｍｍの場合、
Ｄ,Ｗ,Ｈの長さを、各々１ｍｍ、Ｌを３ｍｍとして）、
上記チョーク構造により２つの導波管１０aおよび１０b
の接続端面において導波管長辺の導波管端を等価的に信
号周波数での電気的短絡点として、信号周波数付近での
良好な通過・反射特性が得られるようにしている。The choke has a width approximately 1/4 of the free space propagation wavelength at the signal frequency at a position offset from the waveguide end on the long side of the waveguide approximately 1/4 of the free space propagation wavelength at the signal frequency. The structure has a depth and a dug having at least a length longer than the long side. With this structure, the waveguide ends of the long sides of the waveguide are equivalently formed at the connection end faces of the two waveguides 10a and 10b. It is dimensioned as an electrical short-circuit point. With this structure, resonance that occurs at the connecting surface of the two waveguides can be avoided, and good pass / reflection characteristics can be obtained. In FIG. 1, the offset length D from the long side of the waveguide is approximately 1/4 of the propagation wavelength λ, the width W of the dug,
And the depth H is set to be approximately 1/4 of the propagation wavelength λ and the length L is longer than the long side of the waveguide (for example, when the signal frequency is 76.5 GHz and the propagation wavelength λ is 3.9 mm,
The lengths of D, W, and H are 1 mm and L is 3 mm, respectively,
With the above choke structure, two waveguides 10a and 10b are provided.
On the connection end face of the waveguide, the waveguide end on the long side of the waveguide is equivalently set as an electrical short-circuit point at the signal frequency so that good pass / reflection characteristics near the signal frequency can be obtained.
【００１３】実施の形態２．図２はこの発明の実施の形
態２を示す導波管プレートの上面図である。図において
１０a〜１２a，１０bはそれぞれの導波管プレートの板
厚方向に形成された複数の導波管を示している。また、
図１に示した例と同一部分には同一符号を付している。Embodiment 2. Embodiment 2 FIG. 2 is a top view of a waveguide plate showing Embodiment 2 of the present invention. In the figure, 10a to 12a and 10b indicate a plurality of waveguides formed in the plate thickness direction of each waveguide plate. Also,
The same parts as those in the example shown in FIG. 1 are designated by the same reference numerals.
【００１４】次に動作について説明する。図２におい
て、導波管プレート１a及び１bは板厚方向にＵＨＦ,Ｖ
ＨＦ帯、マイクロ波帯及びミリ波帯等の各周波数帯の高
周波信号を導波管モードで伝送する導波管１０a〜１２a
及び１０b〜１２ｂが対向して複数設けられており、例
えば、図示しない同一平面内に複数の導波管を持つ高周
波モジュールとアンテナ、高周波モジュール同士、ある
いは高周波モジュールと導波管治具などの一部に導波管
接続構造として用いられ、各々のプレートに設けられた
対向する複数の導波管間の高周波信号を伝送させる。こ
の際、２つの導波管プレートの隙間４が発生した場合
に、特定の周波数おける共振による伝送特性の劣化や、
導波管１０b，１１ｂの結合による隣接する導波管同士
のアイソレーション特性劣化が発生するため、導波管プ
レート１aの当たり面側には、２つの対向する導波管同
士の接続端面において電気的に短絡とするために、導波
管１０a〜１２aの長辺方向にチョーク１００が設けられ
ている。Next, the operation will be described. In FIG. 2, the waveguide plates 1a and 1b are UHF, V in the plate thickness direction.
Waveguides 10a to 12a for transmitting a high frequency signal in each frequency band such as an HF band, a microwave band and a millimeter wave band in a waveguide mode.
And 10b to 12b are provided facing each other. For example, one of a high-frequency module and an antenna, a high-frequency module having a plurality of waveguides in the same plane (not shown), or a high-frequency module and a waveguide jig. Is used as a waveguide connecting structure for transmitting a high frequency signal between a plurality of opposing waveguides provided on each plate. At this time, when the gap 4 between the two waveguide plates is generated, deterioration of the transmission characteristics due to resonance at a specific frequency,
Since the isolation characteristics of adjacent waveguides deteriorate due to the coupling of the waveguides 10b and 11b, the contact surface side of the waveguide plate 1a is electrically connected at the connection end face of the two opposing waveguides. A choke 100 is provided in the long side direction of the waveguides 10a to 12a in order to make a short circuit.
【００１５】上記チョークは、導波管長辺の導波管端か
ら信号周波数における自由空間伝搬波長の概略１／４オ
フセットさせた位置に、信号周波数における自由空間伝
搬波長の概略１／４の幅と深さと少なくとも長辺以上の
長さをもつ掘り込みを設けた構造となっており、当該構
造により対向する複数の導波管同士の接続端面において
導波管長辺の導波管端を等価的に電気的短絡点とする寸
法となっている。この構造によって、信号周波数におい
て共振を避け、また、対向する複数の導波管同士の結合
を抑圧し、良好な通過・反射、アイソレーション特性を
得ることができる。The choke has a width of about 1/4 of the free space propagation wavelength at the signal frequency at a position offset from the waveguide end of the long side of the waveguide at about 1/4 of the free space propagation wavelength at the signal frequency. It has a structure with a depth and a digging with a length of at least the long side.Equivalently, the waveguide end of the long side of the waveguide is equivalently formed at the connection end face of a plurality of waveguides facing each other by the structure. It is dimensioned as an electrical short-circuit point. With this structure, resonance at the signal frequency can be avoided, coupling between a plurality of waveguides facing each other can be suppressed, and good pass / reflection and isolation characteristics can be obtained.
【００１６】また、複数の導波管を同一平面内に構成す
ることで、導波管プレートとしては広い面積を要したた
め、従来の導波管プレートは各々の導波管同士の接続に
おける良好な電気特性を確保するために非常に精度の高
い平坦度が要求されたが、上記チョーク構造を採用する
ことにより、機械加工精度の要求を大幅に緩和させるこ
とができ、ダイカスト成型やプレス加工などの安価な加
工法で良好は電気特性を得る導波管プレートを製造する
ことも可能である。Further, by constructing a plurality of waveguides in the same plane, a large area is required for the waveguide plate, so that the conventional waveguide plate is excellent in connection between the respective waveguides. Highly accurate flatness was required to secure electrical characteristics, but by adopting the above choke structure, it is possible to greatly reduce the requirements for machining accuracy, such as die casting and pressing. It is also possible to manufacture a waveguide plate that obtains good electrical characteristics by an inexpensive processing method.
【００１７】実施の形態３．この発明の実施の形態３で
は、実施の形態１或いは２の導波管プレートとの間で、
入力もしくは出力されるミリ波やマイクロ波等の高周波
電波を、送信または受信する高周波装置について述べ
る。この高周波装置として、例えばミリ波帯のＲＦ信号
を送信し、周囲からの反射波を受信することによって周
囲に存在する物体までの距離や方向を計測するミリ波レ
ーダや、マイクロ波の通信信号を送信する送信機或いは
マイクロ波の通信信号を受信する受信機を備えたマイク
ロ波通信装置や、ミリ波帯の送信ビームを走査し、受信
波から画像を生成して、周囲に存在する物体のビデオ画
像を得るミリ波画像装置等がある。Embodiment 3. In the third embodiment of the present invention, between the waveguide plate of the first or second embodiment,
A high-frequency device that transmits or receives high-frequency radio waves such as millimeter waves and microwaves that are input or output will be described. As the high frequency device, for example, a millimeter wave radar that transmits an RF signal in the millimeter wave band and receives a reflected wave from the surroundings to measure the distance and direction to an object existing in the surroundings, and a communication signal of a microwave. A microwave communication device equipped with a transmitter for transmitting or a receiver for receiving a microwave communication signal, or a millimeter-wave band transmission beam is scanned, an image is generated from the received wave, and a video of an object existing in the vicinity is generated. There is a millimeter wave image device for obtaining an image.
【００１８】図１或いは図２に示した導波管プレートに
おいて、高周波のＲＦ信号を入出力する入出力端子１０
a〜１２ａ，１０ｂ〜１２ｂを、図示しないアンテナ素
子等や高周波モジュールに接続する。特に、ミリ波帯
（３０ＧＨｚ〜３００ＧＨｚ）ではマイクロストリップ
線路などの伝送損失の多い平面線路ではなく、低損失な
導波管が用いられるが、上記のように複数の導波管を有
する導波管プレートをミリ波レーダやミリ波通信装置等
の高周波装置の外部インタフェースとして活用すること
により、導波管接続部における良好な通過・反射特性、
隣接導波管のアイソレーション特性が得られるため、ア
レイ（送受信チャネルの複数化）化やモジュール構造の
多彩化に大きく貢献できる。また、機械加工精度の要求
が緩和されるために、従来の機械加工品に比べて、高周
波装置全体として低コストな装置を構成することが可能
である。In the waveguide plate shown in FIG. 1 or 2, an input / output terminal 10 for inputting / outputting a high frequency RF signal.
The a to 12a and 10b to 12b are connected to an antenna element or the like or a high frequency module (not shown). In particular, in the millimeter wave band (30 GHz to 300 GHz), a low-loss waveguide is used instead of a plane line with a large transmission loss such as a microstrip line, but a waveguide having a plurality of waveguides as described above. By utilizing the plate as an external interface for high-frequency devices such as millimeter-wave radar and millimeter-wave communication devices, good transmission and reflection characteristics at the waveguide connection part,
Since the isolation characteristics of adjacent waveguides can be obtained, it can greatly contribute to array (multiple transmission / reception channels) and diversification of module structure. Further, since the requirement for machining accuracy is relaxed, it is possible to configure a low-cost device as a whole high-frequency device as compared with a conventional machined product.
【００１９】[0019]
【発明の効果】以上のように、第１の発明によれば、面
方向に高周波信号を伝送させるために形成した導波管を
有する導波管プレートにおいて、導波管長辺の導波管端
から信号周波数における自由空間伝搬波長の概略１／４
オフセットさせた位置に、信号周波数における自由空間
伝搬波長の概略１／４の幅と深さと少なくとも長辺以上
の長さをもつチョーク構造を有することにより、信号周
波数付近での共振を避け、良好な通過・反射特性を持つ
導波管プレートを得ることができる。As described above, according to the first invention, in the waveguide plate having the waveguide formed for transmitting the high frequency signal in the surface direction, the waveguide end of the long side of the waveguide is provided. To 1/4 of the free space propagation wavelength at the signal frequency
At the offset position, a choke structure having a width and a depth of about 1/4 of the free space propagation wavelength at the signal frequency and a length of at least a long side or more is provided to avoid resonance near the signal frequency and to improve the It is possible to obtain a waveguide plate having transmission / reflection characteristics.
【００２０】また、第２の発明によれば、面方向に高周
波信号を伝送させるために形成した複数の導波管を有す
る導波管プレートにおいて、各々の導波管長辺の導波管
端から信号周波数における自由空間伝搬波長の概略１／
４オフセットさせた位置に、信号周波数における自由空
間伝搬波長の概略１／４の幅と深さと少なくとも長辺以
上の長さをもつチョーク構造を有することにより、信号
周波数において共振を避け、また、対向する複数の導波
管同士の結合を抑圧し、良好な通過・反射、アイソレー
ション特性を持つ導波管プレートを得ることができる。According to the second invention, in a waveguide plate having a plurality of waveguides formed for transmitting a high frequency signal in a plane direction, from the waveguide end of each waveguide long side. Approximate 1 / wavelength of free space propagation wavelength at signal frequency
By having a choke structure at a position offset by 4 having a width and a depth of approximately ¼ of the free space propagation wavelength at the signal frequency and a length of at least a long side or longer, resonance at the signal frequency is avoided and the opposing It is possible to suppress the coupling between the plurality of waveguides that are connected to each other and obtain a waveguide plate having good transmission / reflection and isolation characteristics.
【００２１】さらにまた、第３の発明によれば、より安
価で安定に動作する高周波装置を得ることができる。Furthermore, according to the third aspect of the invention, it is possible to obtain a high-frequency device that is cheaper and operates stably.
【図１】 この発明の実施の形態１を示す導波管プレー
トの上面図である。FIG. 1 is a top view of a waveguide plate showing a first embodiment of the present invention.
【図２】 この発明の実施の形態２を示す導波管プレー
トの上面図である。FIG. 2 is a top view of a waveguide plate showing a second embodiment of the present invention.
【図３】 従来の導波管プレートの一例を示す上面であ
る。FIG. 3 is a top view showing an example of a conventional waveguide plate.
【図４】 従来の導波管プレートの一例を示す上面詳細
図である。FIG. 4 is a detailed top view showing an example of a conventional waveguide plate.
【図５】 従来の導波管プレート上に形成された導波管
の接続面部における通過、反射およびアイソレーション
特性の一例である。FIG. 5 is an example of passage, reflection, and isolation characteristics at a connection surface portion of a waveguide formed on a conventional waveguide plate.
１ａ,１ｂ 導波管プレート、２ 当たり面、３ 従来
のチョーク、４ 導波管接合面の隙間、１０ａ〜１２
ａ、１０ｂ〜１２ｂ 導波管、１００ チョーク1a, 1b Waveguide plate, 2 Contact surface, 3 Conventional choke, 4 Waveguide joining surface gap, 10a to 12
a, 10b to 12b Waveguide, 100 chokes
Claims (3)
形成した導波管を有する導波管プレートにおいて、上記
導波管長辺の導波管端から信号周波数における自由空間
伝搬波長の概略１／４オフセットさせた位置に、信号周
波数における自由空間伝搬波長の概略１／４の幅と深さ
と少なくとも長辺以上の長さをもつチョーク構造を有し
たことを特徴とする導波管プレート。1. A waveguide plate having a waveguide formed to transmit a high-frequency signal in a plane direction, wherein from a waveguide end of the long side of the waveguide, a free space propagation wavelength at a signal frequency of about 1 / 4. A waveguide plate having a choke structure having a width and a depth of approximately 1/4 of a free space propagation wavelength at a signal frequency and a length of at least a long side at a position offset by 4.
形成した複数の導波管を有する導波管プレートにおい
て、上記各々の導波管長辺の導波管端から信号周波数に
おける自由空間伝搬波長の概略１／４オフセットさせた
位置に、信号周波数における自由空間伝搬波長の概略１
／４の幅と深さと少なくとも長辺以上の長さをもつチョ
ーク構造を有したことを特徴とする導波管プレート。2. A waveguide plate having a plurality of waveguides formed for transmitting a high-frequency signal in a plane direction, wherein a free space propagation wavelength at a signal frequency from a waveguide end of each of the long sides of the waveguides. Approximately 1/4 of the free space propagation wavelength at the signal frequency at the offset position
A waveguide plate having a choke structure having a width and a depth of / 4 and a length of at least a longer side.
波管プレートを搭載し、導波管プレートとの間で入力も
しくは出力されるミリ波やマイクロ波等の高周波信号を
送信または受信する手段を備えた高周波装置。3. The waveguide plate according to claim 1 is mounted, and high-frequency signals such as millimeter waves and microwaves that are input to or output from the waveguide plate are transmitted or A high frequency device equipped with a means for receiving.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001386214A JP3995929B2 (en) | 2001-12-19 | 2001-12-19 | Waveguide plate and high frequency device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001386214A JP3995929B2 (en) | 2001-12-19 | 2001-12-19 | Waveguide plate and high frequency device |
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|---|---|
| JP2003188601A true JP2003188601A (en) | 2003-07-04 |
| JP3995929B2 JP3995929B2 (en) | 2007-10-24 |
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|---|---|---|---|
| JP2001386214A Expired - Fee Related JP3995929B2 (en) | 2001-12-19 | 2001-12-19 | Waveguide plate and high frequency device |
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| Country | Link |
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