JPS61150501A - Mode converter - Google Patents
Mode converterInfo
- Publication number
- JPS61150501A JPS61150501A JP27801684A JP27801684A JPS61150501A JP S61150501 A JPS61150501 A JP S61150501A JP 27801684 A JP27801684 A JP 27801684A JP 27801684 A JP27801684 A JP 27801684A JP S61150501 A JPS61150501 A JP S61150501A
- Authority
- JP
- Japan
- Prior art keywords
- waveguide
- mode
- rectangular
- circular
- circular waveguide
- 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.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P5/00—Coupling devices of the waveguide type
- H01P5/12—Coupling devices having more than two ports
- H01P5/16—Conjugate devices, i.e. devices having at least one port decoupled from one other port
Landscapes
- Waveguide Switches, Polarizers, And Phase Shifters (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は円形導波管と同軸線路との変換を矩形導波管を
用いて行うモード変換装置に関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a mode conversion device that performs conversion between a circular waveguide and a coaxial line using a rectangular waveguide.
（従来の技術）
従来のモード変換器としては、同軸拳導波管変換器や矩
形・円形導波管変換器がある。前者はＴＥ、。波からＴ
ＥＭ波への変換するもので、導波管内に挿入した同軸線
路の中心導体をアンテナとして高周波電力の受は渡しを
行う構造になっており、マイクロ波受信器の入力段に使
用される。ま几後者は、矩形から円形導波管に変換する
もので、レーダ装置のアンテナと矩形導波管の回転接続
部などに使用♂（０
この円形・矩形導波管は、高域通過フィルター特性を示
し、その通過損失が３ ｄＢに低下する波長ｔ−ａ断波
長波長と称している。矩形導波管でＴＥ、。モードにお
いての遮断波長λＣはｓ ａｅ矩形導波管の広面寸法
とすると、次式で示される。(Prior Art) Conventional mode converters include coaxial fist waveguide converters and rectangular/circular waveguide converters. The former is TE. T from the wave
It converts into EM waves, and has a structure in which the central conductor of a coaxial line inserted into a waveguide is used as an antenna to receive and transfer high-frequency power, and is used in the input stage of a microwave receiver. The latter converts a rectangular waveguide into a circular waveguide, and is used for rotary connections between radar equipment antennas and rectangular waveguides. The wavelength at which the transmission loss decreases to 3 dB is called the t-a cutoff wavelength.In a rectangular waveguide, the cutoff wavelength λC in the TE and . , is shown by the following equation.
λｃ−２ａ ・・・・・・（１）一般に
１円形導波管ではＴＥ、、モードがあり、その遮断波長
λＣは、円形導波管半径ｒとすると次式で示される。λc-2a (1) In general, a circular waveguide has a TE mode, and its cutoff wavelength λC is expressed by the following equation, where the radius of the circular waveguide is r.
λｃ＝、３．４１１ｒ ・−・・・・（２）
従来、この種の矩形円形導波管変換器は、変換損失を減
少させるために、各導波管の遮断波長をほぼ同じに選ん
でいる。一方、衛星放送では、１２ＧＨｚのマイクロ波
の円偏波面を使用しておシ、受信エリアにより右回転と
左回転の偏波面を有する電波形式を作成し、−周波で２
つの信号の送信を行い電波の有効利用を図っている。λc=, 3.411r (2)
Conventionally, in this type of rectangular circular waveguide converter, the cutoff wavelength of each waveguide is chosen to be approximately the same in order to reduce conversion losses. On the other hand, satellite broadcasting uses circularly polarized wave planes of 12 GHz microwaves, and creates radio wave formats with clockwise and counterclockwise polarization planes depending on the reception area, and -
The aim is to make effective use of radio waves by transmitting two signals.
第３図は円偏波の電波を受信するため従来のモード変換
器の斜視図である。このモード変換器は、導波管の信号
入力口１と偏波面をもとにもどすための偏波変換器２と
、同軸出力端３と、短絡板５とから構成されている。同
軸出力端３には、その中心導体４が円形導波管内にアン
テナとして挿入されている九め、内部の電界分布を防げ
て再び偏波面がかわり変換損失を増加させてしまう欠点
があった。FIG. 3 is a perspective view of a conventional mode converter for receiving circularly polarized radio waves. This mode converter includes a signal input port 1 of a waveguide, a polarization converter 2 for restoring the polarization plane, a coaxial output end 3, and a shorting plate 5. The coaxial output end 3 has the drawback that its center conductor 4 is inserted as an antenna into a circular waveguide, which prevents internal electric field distribution and causes the plane of polarization to change again, increasing conversion loss.
（発明の目的）
本発明の目的は、このような欠点を除き、円形導波管内
に直接挿入された同軸線路の中心導体の影響を低減する
ようにしたモード変換装置を提供することにある。(Object of the Invention) An object of the present invention is to provide a mode conversion device that eliminates such drawbacks and reduces the influence of the center conductor of a coaxial line directly inserted into a circular waveguide.
（発明の構成）
本発明のモード変換装置は、円形導波管と、この円形導
波管と接続されこの導波管の直径以下を対角線の寸法と
した短形導波管と、この短形導波管の広面中央に中心導
体が挿入され外導体がその導波管壁と接続された同軸線
路と、前記中心導体の挿入点から管内波長の約ＩＡの位
置に設けられた短絡板とを含み構成される。なお、円形
導波管と短形導波管との間を管内波長の約Ｖ４の長さの
奇数倍の寸法のテーパーで接続することもできる。(Structure of the Invention) The mode conversion device of the present invention includes a circular waveguide, a rectangular waveguide connected to the circular waveguide and having a diagonal dimension equal to or less than the diameter of the waveguide, and A coaxial line in which a center conductor is inserted into the center of a wide surface of a waveguide and an outer conductor is connected to the wall of the waveguide, and a shorting plate provided at a position about IA of the wavelength in the tube from the insertion point of the center conductor. Contains and consists of. Note that it is also possible to connect the circular waveguide and the rectangular waveguide with a taper having a dimension that is an odd multiple of the length of approximately V4, which is the wavelength inside the tube.
（実施例） 次に本発明を図面によシ詳細に説明する。(Example) Next, the present invention will be explained in detail with reference to the drawings.
第１図は本発明の一実施例の斜視図である。本実施例は
、偏波変換器２を白鷺した円形導波管１と、この円形導
波管１と接続されこの導波管１の直径以下の寸法の対角
線とする短形導波管６と、この短形導波管２の広面中央
管内に中心導体４が挿入され外導体が導波管壁と接続さ
れた同軸線路３と、その中心導体４が挿入された点より
管内波長の約Ｖ４の位置に取付けられた短絡板゛５とを
備えたものである。FIG. 1 is a perspective view of an embodiment of the present invention. This embodiment consists of a circular waveguide 1 which includes a polarization converter 2, and a rectangular waveguide 6 which is connected to the circular waveguide 1 and has a diagonal line smaller than the diameter of the waveguide 1. , a coaxial line 3 in which the center conductor 4 is inserted into the wide center tube of the rectangular waveguide 2 and the outer conductor is connected to the waveguide wall; It is equipped with a shorting plate "5" attached at the position.
第２図は本発明の第２０−雄側の斜視図で、円形導波管
１と短形導波管６との中間に管内波長の１／４の長さの
奇数倍の長さのテーパー７を設は九ものである。FIG. 2 is a perspective view of the 20th-male side of the present invention, in which there is a taper with a length that is an odd number multiple of the length of 1/4 of the wavelength in the tube between the circular waveguide 1 and the rectangular waveguide 6. The number 7 is 9.
これら実施例において、円形導波管１ｔ−伝搬してきた
ＴＥ１１モード波は円形導波管１′と短形導波管６の接
点で短形導波管めＴＥ、。モードに変換される。この短
形導波管６は、縦、横の寸法が異なるものであるから、
回転モードや不要モードが発生しにくく変換損失が広帯
域で小さくなる利点がある。In these embodiments, the TE11 mode wave propagating through the circular waveguide 1t is transmitted to the rectangular waveguide TE at the contact point between the circular waveguide 1' and the rectangular waveguide 6. converted to mode. Since this rectangular waveguide 6 has different vertical and horizontal dimensions,
This has the advantage that rotational modes and unnecessary modes are less likely to occur, and conversion loss is reduced over a wide band.
（発明の効果）
以上説明したように、本発明によれば、短形導波管を用
いているので、回転モードや不要モードを発生し難く、
変換損失を低減できる効果がある。(Effects of the Invention) As explained above, according to the present invention, since a rectangular waveguide is used, rotational modes and unnecessary modes are less likely to occur.
This has the effect of reducing conversion loss.
第１図、第２図は本発明の第１および第２の実施例のモ
ード変換器の斜視図、第３図は従来の円形導波管と同軸
線路変換器とのモード変換器の部分破砕斜視図である。
図において
１・・・・・・信号入力部、２・・・・・・偏波変換器
、３・・・・・・同軸出力端、４・・・・・・中心導体
、５・・・・・・短絡板、６・・・・・・短形波溝波管
、７・・・・・・テーパー、である。
□□□□1 and 2 are perspective views of mode converters according to the first and second embodiments of the present invention, and FIG. 3 is a partially fragmented view of a conventional mode converter consisting of a circular waveguide and a coaxial line converter. FIG. In the figure, 1... Signal input section, 2... Polarization converter, 3... Coaxial output end, 4... Center conductor, 5... . . . short circuit plate, 6 . . . rectangular wave groove wave tube, 7 . . . taper. □□□□
Claims (1)
導波管の直径以下を対角線の以下とした矩形導波管と、
この矩形導波管の広面中央に中心導体が挿入され外導体
が導波管壁と接続された同軸線路と、前記中心導体の挿
入された点より管内波長の約１／４の位置に設けられた
短絡板とを含むモード変換装置。 ２）円形導波管と矩形導波管との接続部が管内波長の約
１／４の長さの奇数倍の長さのテーパーからなる特許請
求の範囲第１項記載のモード変換装置。[Claims] 1) a circular waveguide, a rectangular waveguide connected to the circular waveguide and having a diameter smaller than the diameter of the circular waveguide smaller than a diagonal;
A coaxial line is provided in which a center conductor is inserted into the center of the wide surface of this rectangular waveguide, and an outer conductor is connected to the waveguide wall. A mode conversion device including a short circuit plate. 2) The mode conversion device according to claim 1, wherein the connecting portion between the circular waveguide and the rectangular waveguide is formed by a taper having a length that is an odd number times about 1/4 of the wavelength in the tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27801684A JPS61150501A (en) | 1984-12-25 | 1984-12-25 | Mode converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27801684A JPS61150501A (en) | 1984-12-25 | 1984-12-25 | Mode converter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61150501A true JPS61150501A (en) | 1986-07-09 |
| JPH0431201B2 JPH0431201B2 (en) | 1992-05-25 |
Family
ID=17591463
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP27801684A Granted JPS61150501A (en) | 1984-12-25 | 1984-12-25 | Mode converter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61150501A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110088975A (en) * | 2016-12-23 | 2019-08-02 | 泰科电子连接荷兰公司 | Millimeter wave antenna and attachment device |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5854701A (en) * | 1981-09-29 | 1983-03-31 | Nec Corp | Waveguide-microstrip line converter |
-
1984
- 1984-12-25 JP JP27801684A patent/JPS61150501A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5854701A (en) * | 1981-09-29 | 1983-03-31 | Nec Corp | Waveguide-microstrip line converter |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110088975A (en) * | 2016-12-23 | 2019-08-02 | 泰科电子连接荷兰公司 | Millimeter wave antenna and attachment device |
| JP2020502937A (en) * | 2016-12-23 | 2020-01-23 | ティーイー コネクティビティ ネーデルランド ビーヴイＴＥ Ｃｏｎｎｅｃｔｉｖｉｔｙ Ｎｅｄｅｒｌａｎｄ ＢＶ | Millimeter wave antenna and connection device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0431201B2 (en) | 1992-05-25 |
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