JPS6236321Y2 - - Google Patents
Info
- Publication number
- JPS6236321Y2 JPS6236321Y2 JP16797081U JP16797081U JPS6236321Y2 JP S6236321 Y2 JPS6236321 Y2 JP S6236321Y2 JP 16797081 U JP16797081 U JP 16797081U JP 16797081 U JP16797081 U JP 16797081U JP S6236321 Y2 JPS6236321 Y2 JP S6236321Y2
- Authority
- JP
- Japan
- Prior art keywords
- ferrite
- waveguide
- ferrite rod
- dielectric constant
- loss
- 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
- 229910000859 α-Fe Inorganic materials 0.000 claims description 28
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 6
- 238000002955 isolation Methods 0.000 description 5
- 239000000758 substrate Substances 0.000 description 4
- 230000010287 polarization Effects 0.000 description 3
- 239000003989 dielectric material Substances 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000001427 coherent effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
Landscapes
- Waveguide Connection Structure (AREA)
Description
【考案の詳細な説明】
本考案はマイクロ波及びミリ波帯においてフア
ラデー回転を利用したフエライトスイツチの改良
に関するものである。[Detailed Description of the Invention] The present invention relates to an improvement of a ferrite switch using Faraday rotation in microwave and millimeter wave bands.
一般に、フエライトスイツチはマイクロ波及び
ミリ波帯において、入出力信号の切替器として用
いられている。このフエライトスイツチは導波管
の中にフエライト棒を挿入し、外部から磁界を印
加することによりスイツチングするものである。
このフエライト棒と導波管との整合体としては、
アルミナセラミツクのように、高誘電率で、低損
失な材料が考えられるが、例えば整合性の良い円
錐状のものを作る場合には、非常に高価なものと
なる。このため通常、マイクロ波集積回路に用い
られているアルミナセラミツク等の基板を利用で
きるように、整合体の形状を選ぶ必要がある。 Generally, ferrite switches are used as input/output signal switches in microwave and millimeter wave bands. This ferrite switch inserts a ferrite rod into a waveguide and switches by applying a magnetic field from the outside.
As a matching body of this ferrite rod and waveguide,
Materials with high dielectric constant and low loss, such as alumina ceramic, can be considered, but they are very expensive if, for example, a well-matched conical shape is to be made. For this reason, it is necessary to select the shape of the matching body so that a substrate such as alumina ceramic, which is normally used in microwave integrated circuits, can be used.
従来のフエライトスイツチの一例として、第１
図の断面図を示す。図中、１は円形あるいは矩形
の導波管、３は偏分波器、４はフエライト棒であ
る。５は円錐状テーパ部を有する誘電体を用いた
整合体であり、フエライト棒４と導波管１及び偏
分波器３との整合をとるために用いる。６はコイ
ルで、電流を流した際発生する磁力線によつてフ
エライト４を磁化する為のものである。７は反射
板、８は矩形導波管、９〜１１は各導波管の入出
力端子を示す。 As an example of a conventional ferrite switch, the first
A cross-sectional view of the figure is shown. In the figure, 1 is a circular or rectangular waveguide, 3 is a polarization splitter, and 4 is a ferrite rod. Reference numeral 5 denotes a matching body using a dielectric material having a conical taper portion, and is used to match the ferrite rod 4 with the waveguide 1 and the polarization splitter 3. A coil 6 is used to magnetize the ferrite 4 by lines of magnetic force generated when a current is passed through the coil. 7 is a reflecting plate, 8 is a rectangular waveguide, and 9 to 11 are input/output terminals of each waveguide.
図において、電界の方向が矢印の方向になるよ
うに、導波管１の端子９から円形TE11モードあ
るいは矩形TE10モードを入射すると、コイル６
に電流を流さない場合には、端子１０に出力され
るが、端子１１には殆んど出力されない。このコ
イル６に電流を流し、フエライト棒４によつて電
界の向きを90゜回転させると、端子９から入射し
た信号は反射板７によつて反射され、矩形導波管
８に入り、この導波管８の端子１１から出力され
るが、端子１０には殆んど出力されない。 In the figure, when circular TE 11 mode or rectangular TE 10 mode is input from terminal 9 of waveguide 1 so that the direction of the electric field is in the direction of the arrow, coil 6
When no current is applied to the terminal 10, the current is output to the terminal 10, but almost no current is output to the terminal 11. When a current is applied to this coil 6 and the direction of the electric field is rotated by 90 degrees using the ferrite rod 4, the signal incident from the terminal 9 is reflected by the reflection plate 7, enters the rectangular waveguide 8, and is transmitted through the rectangular waveguide 8. Although the signal is output from the terminal 11 of the wave tube 8, almost no signal is output to the terminal 10.
一般に、マイクロ波帯では、整合体５として加
工性の良い誘電体がよく用いられているが、ミリ
波帯では損失が多くなるので、損失の少ないアル
ミナセラミツクの円錐状のものが用いられてい
る。このアルミナセラミツクは鋳型を作り焼結し
て製造するので、整合体の寸法が異る度に鋳型か
ら製作しなければならず高価になる欠点があつ
た。 Generally, in the microwave band, a dielectric material with good workability is often used as the matching body 5, but in the millimeter wave band, the loss increases, so a conical alumina ceramic with low loss is used. . Since this alumina ceramic is manufactured by making a mold and sintering it, it has the disadvantage of being expensive because it has to be manufactured from a mold each time the dimensions of the integrated body differ.
本考案の目的は、フエライト棒と導波管との整
合体として、フエライト棒の両端に平板あるいは
十文字板のセラミツク基板を取付けることによ
り、従来の欠点を改良し、安価で低損失なミリ波
帯フエライトスイツチを提供することにある。 The purpose of this invention is to improve the drawbacks of the conventional method by attaching flat or cross-shaped ceramic substrates to both ends of the ferrite rod as a matching body for the ferrite rod and waveguide, and to provide an inexpensive, low-loss millimeter wave band. Our goal is to provide a ferrite switch.
本考案のフエライトスイツチは、導波管内に挿
入されたフエライト棒が、低誘電率の支持体によ
りその導波管のほぼ中心となるように支持され、
かつそのフエライト棒の両端に高誘電率で低損失
の平板あるいは十字板の錐状整合体を設けたこと
を特徴とするものである。 In the ferrite switch of the present invention, a ferrite rod inserted into a waveguide is supported by a support with a low dielectric constant so as to be approximately at the center of the waveguide.
The ferrite rod is characterized in that a conical matching body of a flat plate or a cross plate having a high dielectric constant and low loss is provided at both ends of the ferrite rod.
以下図面により本考案を詳細に説明する。 The present invention will be explained in detail below with reference to the drawings.
第２図は本考案の実施例の断面図であり、第１
図と同一番号は同一構成要素を示す。また、１２
はマイクロ波集積回路用基板と同様に高誘電率で
低損失のアルミナセラミツクからなる平板状の整
合体、１３は整合体１２と同様の基板を切断して
十字状に接合した整合体、１４はフエライト棒４
を導波管１のほぼ中央で支持するように管内に挿
入され低誘電率の材料（例えば、テフロン）から
なる支持体である。 FIG. 2 is a sectional view of an embodiment of the present invention, and the first
The same numbers as in the figures indicate the same components. Also, 12
13 is a flat plate-like matching body made of alumina ceramic with high dielectric constant and low loss like the substrate for microwave integrated circuits; 13 is a matching body made by cutting the same substrate as matching body 12 and joining them in a cross shape; 14 is a matching body made of alumina ceramic with high dielectric constant and low loss; Ferrite rod 4
This is a support made of a material with a low dielectric constant (for example, Teflon), which is inserted into the waveguide 1 so as to support it approximately at the center of the waveguide 1.
第３図は本考案の第２の実施例の断面図で、第
２図におけるフエライト棒４の一端の平板状整合
体１２の代りに、十字状整合体１３を用いて、フ
エライト棒４の両端を十字状整合体としたもので
ある。 FIG. 3 is a cross-sectional view of a second embodiment of the present invention, in which a cross-shaped alignment body 13 is used in place of the flat alignment body 12 at one end of the ferrite rod 4 in FIG. is made into a cross-shaped coherent body.
第４図ａ，ｂは、第２図の実施例における通過
損失およびアイソレーシヨンの測定データを示し
たものであるが、従来のフエライトスイツチの特
性と比較して、同等以上の特性が得られている。
図中、Ａはコイル６に電流を流した場合の端子９
−１１間の通過損失特性、Ｂはその電流を流さな
い場合の端子９−１０間の通過損失特性、A′は
コイル６に電流を流さない場合の端子９−１１間
のアイソレーシヨン、B′はその電流を流した場合
の端子９−１０間のアイソレーシヨンを示す。す
なわち、40〜43GHzにおける通過損失は１〜
2.5dB、またアイソレーシヨンは20〜32dBを得て
いる。 Figures 4a and 4b show the measurement data of the passing loss and isolation in the example shown in Figure 2. Compared to the characteristics of the conventional ferrite switch, it was found that the same or better characteristics were obtained. ing.
In the figure, A is the terminal 9 when current is passed through the coil 6.
-11 passing loss characteristic, B is the passing loss characteristic between terminals 9-10 when no current is flowing through it, A' is the isolation between terminals 9-11 when no current is flowing through coil 6, B is the passing loss characteristic between terminals 9-11 when no current is flowing through coil 6, ' indicates the isolation between terminals 9 and 10 when the current flows. In other words, the transmission loss at 40-43GHz is 1-
2.5dB, and isolation is 20-32dB.
本考案の構成によれば、簡単な構成で、比較的
容易で安価に製作できかつ特性の良いフエライト
スイツチが得られる。 According to the configuration of the present invention, it is possible to obtain a ferrite switch with a simple configuration, which can be manufactured relatively easily and inexpensively, and has good characteristics.
以上説明した如く、本考案によればミリ波帯に
おいて簡単な構造で製造容易、低損失かつ安価な
フエライトスイツチを実現でき実用上の効果は非
常に大きい。 As explained above, according to the present invention, a ferrite switch with a simple structure, easy to manufacture, low loss, and low cost can be realized in the millimeter wave band, and the practical effects are very large.
第１図は従来のフエライトスイツチの断面図、
第２図，第３図は本考案の第１および第２の実施
例の断面図、第４図ａ，ｂは第２図の実施例の通
過損失およびアイソレーシヨンを示す特性図であ
る。図において、
１……導波管、２……フエライトスイツチ、３
……偏分波器、４……フエライト棒、５……円錐
状整合体、６……コイル、７……反射板、８……
矩形導波管、９〜１１……入出力端子、１２……
平板整合体、１３……十字板整合体、１４……支
持体である。
Figure 1 is a cross-sectional view of a conventional ferrite switch.
2 and 3 are sectional views of the first and second embodiments of the present invention, and FIGS. 4a and 4b are characteristic diagrams showing the passage loss and isolation of the embodiment of FIG. 2. In the figure, 1... waveguide, 2... ferrite switch, 3
... Polarization splitter, 4 ... Ferrite rod, 5 ... Conical matching body, 6 ... Coil, 7 ... Reflection plate, 8 ...
Rectangular waveguide, 9 to 11... Input/output terminal, 12...
A flat plate alignment body, 13...A cross plate alignment body, 14...A support body.
Claims (1)
率の支持体によりその導波管のほぼ中心となるよ
うに支持され、かつそのフエライト棒の両端に高
誘電率で低損失の平板あるいは十字板の錐状整合
体を設けたことを特徴とするフエライトスイツ
チ。 A ferrite rod inserted into a waveguide is supported by a support with a low dielectric constant so as to be approximately at the center of the waveguide, and a flat plate or a cross plate with a high dielectric constant and low loss is attached to both ends of the ferrite rod. A ferrite switch characterized by having a conical matching body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16797081U JPS5873602U (en) | 1981-11-11 | 1981-11-11 | Ferrite switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16797081U JPS5873602U (en) | 1981-11-11 | 1981-11-11 | Ferrite switch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5873602U JPS5873602U (en) | 1983-05-18 |
| JPS6236321Y2 true JPS6236321Y2 (en) | 1987-09-16 |
Family
ID=29960023
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16797081U Granted JPS5873602U (en) | 1981-11-11 | 1981-11-11 | Ferrite switch |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5873602U (en) |
-
1981
- 1981-11-11 JP JP16797081U patent/JPS5873602U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5873602U (en) | 1983-05-18 |
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