JP2567448B2 - Polarization grid - Google Patents
Polarization gridInfo
- Publication number
- JP2567448B2 JP2567448B2 JP63071803A JP7180388A JP2567448B2 JP 2567448 B2 JP2567448 B2 JP 2567448B2 JP 63071803 A JP63071803 A JP 63071803A JP 7180388 A JP7180388 A JP 7180388A JP 2567448 B2 JP2567448 B2 JP 2567448B2
- Authority
- JP
- Japan
- Prior art keywords
- polarization grid
- polarization
- grid
- crystal
- superconducting material
- 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 - Fee Related
Links
Description
【発明の詳細な説明】 〔産業上の利用分野〕 この発明は、マイクロ波帯およびミリ波帯で用いられ
る偏波グリツドに関するものである。The present invention relates to a polarization grid used in a microwave band and a millimeter wave band.
第４図は、例えば昭和61年度電子通信学会、光・電波
部門全国大会、No.60に示された従来の偏波グリツドを
示し、同図（ａ）において、偏波グリツド（１）、主反
射鏡（２）、副反射鏡（３）、一次ホーン（４），
（５）が図のように配置されている。偏波グリツド
（１）は、同図（ｂ）に示すように、線状の金属（６）
が周期的に配列されてなり、金属（６）としては、金属
線を用いたり、プリント基板にエツチングで作成されて
いる。Fig. 4 shows the conventional polarization grid shown in No. 60 of the National Institute of Electronics and Communication Engineers, National Convention on Optical and Radio Waves, 1986. In Fig. 4 (a), the polarization grid (1) Reflector (2), sub-reflector (3), primary horn (4),
(5) is arranged as shown. The polarization grid (1) has a linear metal (6) as shown in FIG.
Are periodically arranged, and the metal (6) is formed by using a metal wire or etching on a printed circuit board.
以上の構成により、一次ホーン（４）からは、同図
（ａ）に矢印（E1）で示すように、電界の向きが偏波グ
リツド（１）の金属の線（６）と垂直な垂直偏波が放射
される。この偏波は偏波グリツド（１）の影響を受けず
に通過し、副反射鏡（３）、主反射鏡（２）を経て空間
に放射される。一方、一次ホーン（５）からは電界
（E2）の向きが偏波グリツド（１）の金属の線（６）と
平行な水平偏波が放射される。この偏波は偏波グリツド
（１）で完全反射され、副反射鏡（３）、主反射鏡
（２）を経て空間に放射される。With the above configuration, the direction of the electric field from the primary horn (4) is perpendicular to the metal line (6) of the polarization grid (1) as indicated by the arrow (E 1 ) in FIG. Polarized waves are emitted. This polarized wave passes through without being affected by the polarization grid (1), and is radiated into space through the sub-reflection mirror (3) and the main reflection mirror (2). On the other hand, the primary horn (5) radiates horizontal polarization in which the direction of the electric field (E 2 ) is parallel to the metal line (6) of the polarization grid (1). This polarized wave is completely reflected by the polarization grid (1) and radiated into space via the sub-reflection mirror (3) and the main reflection mirror (2).
このように、偏波グリツド（１）を用いれば、水平，
垂直両偏波をそれぞれ別々の一次ホーン（４），（５）
で励振でき、かつ、２つの一次ホーン（４），（５）を
互いに離して配置できるため、偏波グリツドを用いず
に、１つの一次ホーンで水平，垂直両偏波を励振する場
合よりも給電回路が非常に簡単になるという利点があ
り、２偏波を用いる通信システムなどで用いられてい
る。Thus, using the polarization grid (1),
Separate primary horns (4) and (5) for vertical polarization
Since two primary horns (4) and (5) can be placed apart from each other, it is possible to excite both horizontal and vertical polarized waves with one primary horn without using a polarization grid. It has an advantage that the power feeding circuit is very simple and is used in a communication system using two polarized waves.
以上のような従来の偏波グリツドでは、金属の線
（６）の配列周期ｐが、使用する波長より大きいか等し
くなると、水平偏波であつても完全に反射せず、電力の
一部が透過してしまう。このため、金属の線（６）の配
列周期ｐはできるだけ小さい方が望ましいが、工作上の
制限があり、ミリ波帯あるいはそれ以上周波数の高い帯
域では実現が難しいという問題があつた。In the conventional polarization grid as described above, when the arrangement period p of the metal wires (6) becomes larger than or equal to the wavelength to be used, even if it is horizontal polarization, it is not completely reflected and a part of the power is lost. It penetrates. For this reason, it is desirable that the arrangement period p of the metal wires (6) is as small as possible, but there is a problem in that it is difficult to realize in the millimeter wave band or a band having a higher frequency than that due to the limitation in working.
この発明はかような課題を解決するためになされたも
ので、ミリ偏波あるいはそれ以上の周波数の高い帯域に
おいても動作する偏波グリツドを得ることを目的とす
る。The present invention has been made to solve such a problem, and an object thereof is to obtain a polarization grid that operates even in a high frequency band of millimeter polarization or higher.
この発明に係る偏波グリツドは、超電導材料からな
り、平板状または曲面状のいずれかで形成されていると
ともに、結晶のＣ軸の方向が横方向になるように配置さ
れたものである。The polarization grid according to the present invention is made of a superconducting material, is formed in either a flat plate shape or a curved surface shape, and is arranged such that the direction of the C axis of the crystal is the horizontal direction.
この発明においては、超電導材料を結晶成長させ、Ｃ
軸の方向を横方向に配置すると、縦方向には電流が流れ
るが、横方向には電流が流れ難く、従来の偏波グリツド
と同様の効果が得られる。さらに、縦方向に流れる電流
の方向が超電導材料の結晶の大きさで決まり、この大き
さは非常に小さいため、従来のものに比べ非常に高い周
波数においても使用可能である。In the present invention, the superconducting material is crystal-grown and C
When the axial direction is arranged in the horizontal direction, the current flows in the vertical direction, but the current hardly flows in the horizontal direction, and the same effect as that of the conventional polarization grid can be obtained. Furthermore, the direction of the current flowing in the vertical direction is determined by the size of the crystal of the superconducting material, and since this size is very small, it can be used even at a frequency extremely higher than that of the conventional one.
第１図，第２図はこの発明の一実施例を示し、図にお
いて偏波グリツド（10）は、例えばＹ−Ba−Cu−Ｏ系セ
ラミツク等の高温超電導材料で形成されている。その他
は第４図（ａ）と同じものである。偏波グリツド（10）
は第２図（ａ）に示すように、結晶のＣ軸の方向が横方
向になつている。この偏波グリツド（10）は第２図
（ｂ）に示すように、結晶のＣ軸の方向、すなわち、横
方向には電流が流れにくく、縦方向のみ電流が流れ、か
つ、電流の間隔（ｇ）が分子の大きさ、すなわち、数十
オングストロームと非常に小さいため、ミリ波帯よりも
さらに高い周波数においても、従来の偏波グリツドと同
様に垂直偏波を透過させ、水平偏波を反射させる機能を
有する。さらに、偏波グリツド（10）が超電導材料で形
成しているため、非常に低損失である。また、従来のも
のと同様に２個の一次ホーン（４），（５）を離して配
置できるため、給電回路が簡単になる。1 and 2 show an embodiment of the present invention, in which the polarization grid (10) is formed of a high temperature superconducting material such as Y—Ba—Cu—O system ceramics. Others are the same as those in FIG. 4 (a). Polarization grid (10)
As shown in FIG. 2 (a), the C axis of the crystal is in the lateral direction. As shown in FIG. 2 (b), in this polarization grid (10), it is difficult for the current to flow in the direction of the C axis of the crystal, that is, the horizontal direction, and the current flows only in the vertical direction, and the current interval ( Since g) is the size of the molecule, that is, tens of angstroms, which is very small, it transmits vertical polarized waves and reflects horizontal polarized waves even at frequencies higher than the millimeter wave band, similar to conventional polarization grids. It has the function of Furthermore, since the polarization grid (10) is made of a superconducting material, it has a very low loss. Moreover, since the two primary horns (4) and (5) can be arranged apart from each other as in the conventional case, the power supply circuit is simplified.
第３図は他の実施例を示し、偏波グリツド（11）は、
超電導材料で形成した鏡面からなつている。この鏡面は
放物面あるいは他の関数で表わされる曲面でなり、主反
射鏡（２）の前面に一定の角度をなして設けられてい
る。FIG. 3 shows another embodiment, in which the polarization grid (11) is
The mirror surface is made of superconducting material. This mirror surface is a parabolic surface or a curved surface represented by another function, and is provided on the front surface of the main reflecting mirror (2) at a constant angle.
以上の構成においても、結晶のＣ軸の方向が横方向に
なるように配置すると、非常に高い周波数においても垂
直偏波が透過し、水平偏波が反射され、かつ、低損失
で、２つの一次ホーン（４），（５）を離して配置でき
るため、給電回路の構成が容易である。Also in the above configuration, if the crystal is arranged so that the direction of the C-axis is in the horizontal direction, the vertically polarized wave is transmitted, the horizontally polarized wave is reflected even at a very high frequency, and the loss is low. Since the primary horns (4) and (5) can be arranged separately, the configuration of the power feeding circuit is easy.
以上のように、この発明によれば、超電導材料からな
り、平板状または曲面状のいずれかで形成されていると
ともに、結晶のＣ軸の方向が横方向になるように配置さ
れたことにより、非常に高い周波数帯においても垂直・
水平両偏波を低損失に分離することができ、給電回路も
簡単になるという効果がある。As described above, according to the present invention, it is made of a superconducting material, is formed in either a flat plate shape or a curved surface shape, and is arranged so that the direction of the C axis of the crystal is the horizontal direction. Vertical even at very high frequency bands
Both horizontal polarized waves can be separated into low loss, and the power feeding circuit can be simplified.
第１図はこの発明の一実施例の使用状態の要部斜視図、
第２図（ａ）および（ｂ）はそれぞれ第１図のものの一
部斜視図および動作説明線図、第３図（ａ）は他の実施
例の一部斜視図、同図（ｂ）は同図（ａ）の一部拡大
図、第４図（ａ）は従来の偏波グリツドの使用状態の要
部斜視図、同図（ｂ）は一部拡大斜視図である。 （10），（11）……偏波グリツド。 なお、各図中、同一符号は同一又は相当部分を示す。FIG. 1 is a perspective view of a main part of a use state of an embodiment of the present invention,
2 (a) and 2 (b) are a partial perspective view and an operation explanatory diagram, respectively, of FIG. 1, FIG. 3 (a) is a partial perspective view of another embodiment, and FIG. FIG. 4A is a partially enlarged view of FIG. 4A, FIG. 4A is a perspective view of a main part of a conventional polarization grid in use, and FIG. 4B is a partially enlarged perspective view thereof. (10), (11) ... Polarization grid. In each figure, the same reference numerals indicate the same or corresponding parts.
Claims (1)
のいずれかで形成されているとともに、結晶のＣ軸の方
向が横方向になるように配置された、水平偏波と垂直偏
波とを互いに分離する偏波グリッド。1. A horizontally polarized wave and a vertically polarized wave which are made of a superconducting material and which are formed in either a flat plate shape or a curved surface shape and are arranged such that the direction of the C axis of the crystal is the horizontal direction. Polarization grid that separates from each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63071803A JP2567448B2 (en) | 1988-03-28 | 1988-03-28 | Polarization grid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63071803A JP2567448B2 (en) | 1988-03-28 | 1988-03-28 | Polarization grid |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01245604A JPH01245604A (en) | 1989-09-29 |
| JP2567448B2 true JP2567448B2 (en) | 1996-12-25 |
Family
ID=13471087
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63071803A Expired - Fee Related JP2567448B2 (en) | 1988-03-28 | 1988-03-28 | Polarization grid |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2567448B2 (en) |
-
1988
- 1988-03-28 JP JP63071803A patent/JP2567448B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01245604A (en) | 1989-09-29 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |