JPH03185901A - Polarized wave converter - Google Patents
Polarized wave converterInfo
- Publication number
- JPH03185901A JPH03185901A JP1324228A JP32422889A JPH03185901A JP H03185901 A JPH03185901 A JP H03185901A JP 1324228 A JP1324228 A JP 1324228A JP 32422889 A JP32422889 A JP 32422889A JP H03185901 A JPH03185901 A JP H03185901A
- Authority
- JP
- Japan
- Prior art keywords
- converter
- polarized wave
- wave
- electric field
- horn
- 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.)
- Pending
Links
- 230000005684 electric field Effects 0.000 claims abstract description 24
- 229910000859 α-Fe Inorganic materials 0.000 claims abstract description 21
- 230000010287 polarization Effects 0.000 claims description 34
- 238000010586 diagram Methods 0.000 description 6
- 239000004020 conductor Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/16—Auxiliary devices for mode selection, e.g. mode suppression or mode promotion; for mode conversion
- H01P1/161—Auxiliary devices for mode selection, e.g. mode suppression or mode promotion; for mode conversion sustaining two independent orthogonal modes, e.g. orthomode transducer
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/165—Auxiliary devices for rotating the plane of polarisation
- H01P1/175—Auxiliary devices for rotating the plane of polarisation using Faraday rotators
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/24—Combinations of antenna units polarised in different directions for transmitting or receiving circularly and elliptically polarised waves or waves linearly polarised in any direction
- H01Q21/245—Combinations of antenna units polarised in different directions for transmitting or receiving circularly and elliptically polarised waves or waves linearly polarised in any direction provided with means for varying the polarisation
Landscapes
- Waveguide Switches, Polarizers, And Phase Shifters (AREA)
- Waveguide Aerials (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
- Aerials With Secondary Devices (AREA)
Abstract
Description
【発明の詳細な説明】
皇栗±更剋貝分里
本発明は、放送衛星及び通信衛星から送られて来る電波
を受信するアンテナ装置の偏波変換器に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a polarization converter for an antenna device that receives radio waves sent from broadcasting satellites and communication satellites.
裟朱色挟査
放送衛星及び通信衛星から送られて来る電波を受信する
アンテナ装置は、第４図に示すように、反射鏡（１）、
ホーン（２）及びコンバータ（３）から構成されている
。衛星から送られて来る電波には、その電界の変化の方
向によって、右回りの円方向に回転する円偏波（以下「
右旋円偏波」という）。As shown in Fig. 4, the antenna device that receives radio waves sent from the vermilion intersecting broadcasting satellite and the communication satellite includes a reflector (1),
It consists of a horn (2) and a converter (3). Radio waves sent from satellites have circularly polarized waves (hereinafter referred to as "circularly polarized waves") that rotate in a clockwise circular direction depending on the direction of change in the electric field.
right-handed circularly polarized wave).
左回りの円方向に回転する円偏波（以下「左旋円偏波」
という）、水平方向に変化する直線偏波（以下「水平偏
波」という）、及び垂直方向に変化する直線偏波（以下
「垂直偏波」という）の４種類の偏波があり、これらの
偏波が反射鏡（１）で反射されホーン（２）に入射され
る。そして、ホーン（２）を通過した電波はコンバータ
（３）に入る。Circularly polarized waves that rotate in a counterclockwise circular direction (hereinafter referred to as "left-handed circularly polarized waves")
There are four types of polarized waves: linear polarization that changes in the horizontal direction (hereinafter referred to as "horizontal polarization"), and linear polarization that changes in the vertical direction (hereinafter referred to as "vertical polarization"). The polarized wave is reflected by a reflecting mirror (1) and is incident on a horn (2). The radio waves that have passed through the horn (2) then enter the converter (3).
コンバータ（３）は、第５図に示すように、電波の入口
である導波管（４）の部分に電波を受けるための導体棒
（５）を有しており、コンバータ（３）が受信できる電
波は導体棒（５）に平行な方向の偏波成分のみである。As shown in Fig. 5, the converter (3) has a conductor rod (5) for receiving radio waves in the waveguide (4) which is the entrance of the radio waves, and the converter (3) receives the radio waves. The radio waves generated are only polarized components in the direction parallel to the conductor rod (5).
したがって、例えば水平及び垂直の両直線偏波を受信す
るには、従来、導体棒（５）の方向をそれぞれの偏波の
方向に合わせた２台のコンバータを使用するか、または
１台□のコンバータで両直線偏波を受信するために、第
６図に示す通りコンバータ（３）の前（電波の入口側）
に偏波の方向を水平から垂直へ又は垂直から水平へ９０
度ｆ頃けることができるポーラロータやポーラライザ等
の偏波変換器（６〉を設ける必要があった。Therefore, for example, in order to receive both horizontal and vertical linearly polarized waves, conventionally two converters are used in which the direction of the conductor rod (5) is aligned with the direction of each polarized wave, or one converter is used. In order to receive both linearly polarized waves in the converter, as shown in Figure 6, in front of the converter (3) (on the radio wave entrance side)
change the direction of polarization from horizontal to vertical or from vertical to horizontal
It was necessary to provide a polarization converter (6) such as a polar rotor or a polarizer that can be rotated at approximately f degrees.
ここで、第６図のホーン（２）は断面図として示されて
おり、偏波変換器（６）及びコンバータ（３）は側面図
として示されている。一方、円偏波を受信するには、従
来、第７図に示す通りコンバータ（３）の前（電波の入
口側）の導波管（７）の部分に誘電体板（８）を設置し
、この誘電体板（８）の働きによって円偏波を直線偏波
に変換していた。ここで、第７図のホーン（２）及び導
波管（７）は断面図として示されており、コンバータ（
３）は側面図として示されている。しかし、この場合も
入射した円偏波が右旋であるか左旋であるかによって誘
電体板（８〉で変換された後の直線偏波の方向が９０度
異なるため、従来は右旋円偏波と左旋円偏波のそれぞれ
に対し専用の受信アンテナ装置が使われていた。Here, the horn (2) in FIG. 6 is shown as a cross-sectional view, and the polarization converter (6) and converter (3) are shown as a side view. On the other hand, in order to receive circularly polarized waves, conventionally a dielectric plate (8) is installed in the waveguide (7) in front of the converter (3) (on the radio wave entrance side) as shown in Figure 7. The dielectric plate (8) converts circularly polarized waves into linearly polarized waves. Here, the horn (2) and waveguide (7) in FIG. 7 are shown as cross-sectional views, and the converter (
3) is shown as a side view. However, in this case as well, the direction of the linearly polarized wave after being converted by the dielectric plate (8〉) differs by 90 degrees depending on whether the incident circularly polarized wave is right-handed or left-handed. Dedicated receiving antenna equipment was used for each wave and left-handed circularly polarized wave.
■が ・ しよ゛と る号
以上述べた通り、ポーラロータやポーラライザ等の偏波
変換器を用いることによって、水平及び垂直の両直線偏
波を１台のコンバータで受信することは可能である。し
かし、このような構成の受信アンテナ装置で円偏波を受
信することはできない。As stated above, by using a polarization converter such as a polar rotor or polarizer, it is possible to receive both horizontal and vertical linearly polarized waves with one converter. However, a receiving antenna device having such a configuration cannot receive circularly polarized waves.
そこで本発明では、１台のコンバータで水平及び垂直の
両直線偏波のみならず右旋及び左旋の両日偏波をも受信
可能とする偏波変換器を提供することを目的とする。Therefore, an object of the present invention is to provide a polarization converter that can receive not only horizontal and vertical linearly polarized waves but also both right-handed and left-handed polarized waves with one converter.
課題を解決するための手
上記目的を達成するため本発明では、放送衛星及び通信
衛星から送られて来る電波を受信するアンテナ装置のホ
ーンとコンバータの間に設けられた偏波変換器において
、円形導波管と、円偏波を直線偏波に変換するため前記
導波管内部の前記ホーン側に設置された誘電体板と、前
記直線偏波の電界の方向を変えるため前記導波管内部の
前記コンバータ側に設置されたフェライト棒と、前記フ
ェライト棒に磁界を与えるためのコイルと、を有した構
成としている。Means for Solving the Problems In order to achieve the above object, the present invention provides a circular a waveguide, a dielectric plate installed on the horn side inside the waveguide for converting circularly polarized waves into linearly polarized waves, and a dielectric plate installed inside the waveguide for changing the direction of the electric field of the linearly polarized waves. The converter includes a ferrite rod installed on the converter side, and a coil for applying a magnetic field to the ferrite rod.
在−貝
このような構成によると、例えば誘電体板が垂直に設置
されている場合には、ホーンより入って来た右旋円偏波
は誘電体板を通過した後、第２図に示す通り、電界の方
向がホーン側から見て垂直方向に対しく誘電体板に対し
）右方向に４５度傾斜した直線偏波となる。左旋円偏波
が入って来た場合は、誘電体板を通過後、電界の方向が
左方向に４５度傾斜した直線偏波となる（第２図）。ま
た、ホーンより水平又は垂直の直線偏波が入って来た場
合は、第２図に示す通り、両直線偏波とも電界の方向は
変化せずに誘電体板を通過する。According to this configuration, for example, when the dielectric plate is installed vertically, the right-handed circularly polarized wave coming from the horn passes through the dielectric plate and then becomes as shown in Figure 2. As a result, the direction of the electric field is a linearly polarized wave tilted 45 degrees to the right (with respect to the dielectric plate, which is perpendicular to the direction seen from the horn side). When a left-handed circularly polarized wave enters, after passing through the dielectric plate, it becomes a linearly polarized wave with the direction of the electric field tilted 45 degrees to the left (Figure 2). Furthermore, when horizontal or vertical linearly polarized waves enter from the horn, both linearly polarized waves pass through the dielectric plate without changing the direction of the electric field, as shown in FIG.
次に、誘電体板を通過した電波はフェライト棒を通過す
る。このとき、フェライト棒に磁界が加えられていなけ
れば電波は電界の方向を変えることなく通過するが、コ
イルに電流（直流）を流してフェライト棒に加える磁界
の方向及び強さを変えることにより、ファラデー効果を
利用してフェライト棒を通過する電波の電界の方向を変
えることができる。すなわち、フェライト棒に加える磁
界の方向を電波の進行方向と同方向とするか逆方向とす
るかにより、電界の方向を右方向（時計方向）又は左方
向（反時計方向）に変化させることができ、この方向変
化の角度はフヱライ！・棒に加える磁界の強さによって
変えることができる。Next, the radio waves that have passed through the dielectric plate pass through the ferrite rod. At this time, if no magnetic field is applied to the ferrite rod, the radio waves will pass through without changing the direction of the electric field, but by passing current (direct current) through the coil and changing the direction and strength of the magnetic field applied to the ferrite rod, The Faraday effect can be used to change the direction of the electric field of radio waves passing through a ferrite rod. In other words, the direction of the electric field can be changed to the right (clockwise) or to the left (counterclockwise) depending on whether the direction of the magnetic field applied to the ferrite rod is in the same direction as the direction of propagation of the radio waves or in the opposite direction. Yes, the angle of this direction change is perfect!・Can be changed by changing the strength of the magnetic field applied to the bar.
なお、以上において電波の電界の進行方向成分は存在し
ないか又は無視できる。Note that in the above, the traveling direction component of the electric field of the radio wave does not exist or can be ignored.
失」Ｌ明
第１図に本発明の一実施例を示す。この図において、ホ
ーン（２）及び偏波変換器（９）は断面図として示され
ており、コンバータ（３）は側面図として示されている
。偏波変換器（９）は、ホーン〈２）とコンバータ（３
）の間に取り付けられており、円形導波管（２０）の内
部のホーン（２）側に誘電体板（８）を垂直に設置し、
コンバータ（３）側にフェライト棒（１０）をその中心
軸が円形導波管（２０）の中心軸と一致するような位置
及び向きに発泡樹脂（１２）で固定して設置し、さらに
円形導波管（２０）の外側にコイル（１１）を捲回して
フェライト棒（１０）にその中心軸に平行な方向に磁界
を加え得るように構成されている。An embodiment of the present invention is shown in FIG. In this figure, the horn (2) and polarization converter (9) are shown in cross-section, and the converter (3) is shown in side view. The polarization converter (9) includes a horn (2) and a converter (3).
), a dielectric plate (8) is installed vertically on the horn (2) side inside the circular waveguide (20),
A ferrite rod (10) is fixed on the converter (3) side with foamed resin (12) in such a position and direction that its central axis coincides with the central axis of the circular waveguide (20). A coil (11) is wound around the outside of the wave tube (20) so that a magnetic field can be applied to the ferrite rod (10) in a direction parallel to its central axis.
このような偏波変換器（９）にホーン（２）から入って
来た電波は、誘電体板（８）及びフェライト棒（１０）
を通過すると、入力偏波の種類に応じて第２図に示すよ
うに電界の方向が変化し、偏波変換器（９）からの出力
偏波はいずれの場合も水平偏波となってコンバータ（３
）に人力される。すなわち、偏波変換器（９）への入射
偏波が右旋円偏波の場合には、誘電体板（８）を通過後
、電界の方向が垂直方向に対し右方向に４５度傾斜した
直線偏波となり、入射偏波が左旋円偏波の場合には、左
方向に４５度傾斜した直線偏波となる。これに対し、水
平及び垂直の両直線偏波の場合には、誘電体板（８）を
通過しても電界の方向は変化しない。Radio waves entering such a polarization converter (9) from the horn (2) are transmitted through the dielectric plate (8) and the ferrite rod (10).
, the direction of the electric field changes as shown in Figure 2 depending on the type of input polarized wave, and the output polarized wave from the polarization converter (9) becomes horizontally polarized in each case and is sent to the converter. (3
) is done manually. In other words, when the polarized wave incident on the polarization converter (9) is a right-handed circularly polarized wave, the direction of the electric field is tilted 45 degrees to the right with respect to the vertical direction after passing through the dielectric plate (8). It becomes a linearly polarized wave, and when the incident polarized wave is a left-handed circularly polarized wave, it becomes a linearly polarized wave tilted 45 degrees to the left. On the other hand, in the case of both horizontal and vertical linear polarization, the direction of the electric field does not change even if it passes through the dielectric plate (8).
次に、フェライト棒（ｌＯ）を通過する際には、前述の
ようにフェライト棒（１ｏ）に加えられる磁界の方向及
び強さにより電界の方向が変わる。このため、入射偏波
の種類に応しコイル（１１）に流す電流（直流）の方向
及び大きさを適宜設定してフェライト棒（ｌＯ）に加え
る磁界の方向及び強さを適切に変えることにより、第２
図に示すように偏波変換器（９）からの出力偏波を水平
偏波とすることができる。すなわち、入射偏波が右旋偏
波又は垂直偏波の場合は、フェライト棒（１０）に電波
の進行方向と同方向の磁界を加え、その磁界の強さを適
切に選べば電波の電界の方向が・右方向に４５度又は９
０度変化し、出力偏波をいずれの場合も水平偏波とする
ことができる。また、入射偏波が左旋偏波の場合は、電
波の進行方向と逆方向の磁界を加え、その磁界の強さを
適切に選べば電界の方向が左方向に４５度変化し、出力
偏波を水平偏波とすることができる。これに対し、入力
偏波が水平偏波の場合には、電界の方向を変える必要が
ないのでフェライト棒（１０）に磁界を加えなければよ
い。Next, when passing through the ferrite rod (lO), the direction of the electric field changes depending on the direction and strength of the magnetic field applied to the ferrite rod (lO) as described above. For this reason, by appropriately setting the direction and magnitude of the current (DC) flowing through the coil (11) according to the type of incident polarized wave, and appropriately changing the direction and strength of the magnetic field applied to the ferrite rod (lO). , second
As shown in the figure, the output polarization from the polarization converter (9) can be horizontally polarized. That is, when the incident polarization is right-handed polarization or vertical polarization, by applying a magnetic field in the same direction as the traveling direction of the radio wave to the ferrite rod (10) and selecting the strength of the magnetic field appropriately, the electric field of the radio wave can be reduced. Direction: 45 degrees or 9 to the right
0 degrees, and the output polarization can be horizontally polarized in both cases. In addition, if the incident polarization is left-handed polarization, if a magnetic field is applied in the opposite direction to the traveling direction of the radio wave and the strength of the magnetic field is selected appropriately, the direction of the electric field will change 45 degrees to the left, and the output polarization will change. can be horizontally polarized. On the other hand, when the input polarization is horizontal polarization, there is no need to change the direction of the electric field, so no magnetic field is applied to the ferrite rod (10).
以上の動作により、ホーン（２）から入って来た電波は
、右旋又は左旋の円偏波、水平又は垂直の直線偏波のい
ずれであっても、コイル（１１）に流す電流の方向及び
大きさを入射偏波の種類に応じて適宜設定することによ
りコンバータ（３）に入るときには常に水平偏波となる
ので、■台のコンバータ（３）でこれら４種類の偏波を
選択受信することができる。With the above operation, the radio waves coming from the horn (2) can be either right-handed or left-handed circularly polarized waves, horizontal or vertically linearly polarized waves, and the direction of the current flowing through the coil (11). By setting the size appropriately according to the type of incident polarized wave, it will always be horizontally polarized wave when it enters the converter (3), so these four types of polarized waves can be selectively received by the converter (3). I can do it.
なお、第３図に示すようにフェライト棒（１０）に磁界
を加えるためのコイル（１１）を円形導波管（２０）の
内部に設置しても上記と同様の作用・効果が得られる。Incidentally, even if a coil (11) for applying a magnetic field to the ferrite rod (10) is installed inside the circular waveguide (20) as shown in FIG. 3, the same operation and effect as described above can be obtained.
また、上記において誘電体板（８）は垂直に設置されて
いるが、設置の方向はこれに限定す□る必要はなく、誘
電体板（８〉の面が円形導波管（２０）の中心軸（電波
の進向方向）と平行であればよい。ただし、誘電体板（
８）の設置の方向に応じてコイル（１１）に流す電流の
設定を変える必要がある。In addition, although the dielectric plate (8) is installed vertically in the above, the installation direction need not be limited to this, and the surface of the dielectric plate (8>) It is fine as long as it is parallel to the central axis (direction of propagation of radio waves).However, the dielectric plate (
8) It is necessary to change the setting of the current flowing through the coil (11) depending on the installation direction.
又里坐剋果
以上説明したように本発明によれば、ホーンから入射さ
れる偏波が右旋又は左旋の円偏波、水平又は垂直の直線
偏波のいずれであっても、入射偏波の種類に応じてコイ
ルに流す電流を適宜設定することにより、コンバータへ
入力される偏波を常に一定方向の電界を有する直線偏波
とすることができる。これにより、放送衛星及び通信衛
星から送られてくる各種の電波を１台のコンバータで選
択受信することが可能となる。As explained above, according to the present invention, regardless of whether the polarized wave incident from the horn is a right-handed or left-handed circularly polarized wave, or a horizontal or vertical linearly polarized wave, the incident polarized wave is By appropriately setting the current flowing through the coil depending on the type of the converter, the polarized wave input to the converter can be made into a linearly polarized wave that always has an electric field in a constant direction. This allows one converter to selectively receive various radio waves sent from broadcasting satellites and communication satellites.
第１図は本発明の一実施例である偏波変換器を使用した
受信アンテナ装置要部の図、第２図は前記偏波変換器の
各部分での電波の電界の方向を示す図、第３図は本発明
の他の実施例である偏波変換器の断面図、第４図は従□
来の受信アンテナ装置の構成図、第５図はコンバータの
部分断面図、第６図は水平及び垂直の両直線偏波を受信
するための従来のアンテナ装置要部の図、第７図は円偏
波を受信するための従来のアンテナ装置要部の図である
。
（２） −ホーン、 （３） −・コンバータ。
（８）−誘電体板、 （９） −偏波変換器。
（１０）−一・フェライト棒、 （１１）−コイル０
（２０）・−円形導波管。
出
願
人
シャープ株式会社
代
理
人FIG. 1 is a diagram of the main parts of a receiving antenna device using a polarization converter which is an embodiment of the present invention, and FIG. 2 is a diagram showing the direction of the electric field of radio waves in each part of the polarization converter. FIG. 3 is a cross-sectional view of a polarization converter which is another embodiment of the present invention, and FIG.
A configuration diagram of a conventional receiving antenna device, FIG. 5 is a partial sectional view of a converter, FIG. 6 is a diagram of the main parts of a conventional antenna device for receiving both horizontal and vertical linearly polarized waves, and FIG. 7 is a circular diagram. 1 is a diagram of main parts of a conventional antenna device for receiving polarized waves. (2) -Horn, (3) -Converter. (8) - dielectric plate, (9) - polarization converter. (10) - one ferrite rod, (11) - coil 0 (20) - circular waveguide. Applicant Sharp Corporation Agent
Claims (1)
信するアンテナ装置のホーンとコンバータの間に設けら
れた偏波変換器において、 円形導波管と、 円偏波を直線偏波に変換するため前記導波管内部の前記
ホーン側に設置された誘電体板と、前記直線偏波の電界
の方向を変えるため前記導波管内部の前記コンバータ側
に設置されたフェライト棒と、 前記フェライト棒に磁界を与えるためのコイルと、 を有したことを特徴とする偏波変換器。(1) A polarization converter installed between the horn and converter of an antenna device that receives radio waves sent from broadcasting and communication satellites uses a circular waveguide to convert circularly polarized waves into linearly polarized waves. a dielectric plate installed on the horn side inside the waveguide to change the direction of the electric field of the linearly polarized wave; a ferrite rod installed on the converter side inside the waveguide to change the direction of the electric field of the linearly polarized wave; A polarization converter comprising: a coil for applying a magnetic field to a bar; and a polarization converter.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1324228A JPH03185901A (en) | 1989-12-14 | 1989-12-14 | Polarized wave converter |
| KR1019900020277A KR930008836B1 (en) | 1989-12-14 | 1990-12-11 | Polarization converter having two converting devices therein |
| EP19900313700 EP0433092A3 (en) | 1989-12-14 | 1990-12-14 | Polarization converter having two converting devices therein |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1324228A JPH03185901A (en) | 1989-12-14 | 1989-12-14 | Polarized wave converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03185901A true JPH03185901A (en) | 1991-08-13 |
Family
ID=18163470
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1324228A Pending JPH03185901A (en) | 1989-12-14 | 1989-12-14 | Polarized wave converter |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0433092A3 (en) |
| JP (1) | JPH03185901A (en) |
| KR (1) | KR930008836B1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5440279A (en) * | 1992-11-24 | 1995-08-08 | Matsushita Electric Industrial Co., Ltd. | Electromagnetic radiation converter |
| US5550553A (en) * | 1993-02-18 | 1996-08-27 | Murata Manufacturing Co., Ltd. | Dielectric rod antenna |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1993007653A1 (en) * | 1991-10-03 | 1993-04-15 | Thomson Consumer Electronics S.A. | Waveguide coupling arrangement |
| DE20006916U1 (en) * | 2000-04-14 | 2001-06-13 | Rr Elektronische Geraete Gmbh | Device for converting circularly vibrating electromagnetic radiation |
| CN110085981B (en) * | 2019-05-13 | 2020-05-05 | 中国人民解放军火箭军工程大学 | Double-frequency satellite antenna variable polarization feed source |
| CN116247394B (en) * | 2023-01-06 | 2024-04-30 | 中国人民解放军63660部队 | Rectangular waveguide TE10Circular waveguide polarization tunable TE11Mode converter |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB891427A (en) * | 1959-12-31 | 1962-03-14 | Gen Electric Co Ltd | Improvements in or relating to waveguide arrangements including elements of ferromagnetic ceramic material |
| US3166724A (en) * | 1961-11-24 | 1965-01-19 | Philip J Allen | Electrical frequency shifter utilizing faraday phase shifter and dual mode coupler with rotatable reflection dipole |
| DE3741501C1 (en) * | 1987-12-08 | 1989-02-02 | Kathrein Werke Kg | Excitation or feed system for a parabolic antenna |
| DE8907672U1 (en) * | 1989-06-23 | 1989-10-05 | Müller, Heinz-Jürgen, Dipl.-Ing. (FH), 7314 Wernau | Excitation or feeding device for a parabolic antenna |
-
1989
- 1989-12-14 JP JP1324228A patent/JPH03185901A/en active Pending
-
1990
- 1990-12-11 KR KR1019900020277A patent/KR930008836B1/en not_active IP Right Cessation
- 1990-12-14 EP EP19900313700 patent/EP0433092A3/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5440279A (en) * | 1992-11-24 | 1995-08-08 | Matsushita Electric Industrial Co., Ltd. | Electromagnetic radiation converter |
| US5550553A (en) * | 1993-02-18 | 1996-08-27 | Murata Manufacturing Co., Ltd. | Dielectric rod antenna |
Also Published As
| Publication number | Publication date |
|---|---|
| KR910013615A (en) | 1991-08-08 |
| EP0433092A2 (en) | 1991-06-19 |
| KR930008836B1 (en) | 1993-09-15 |
| EP0433092A3 (en) | 1991-11-13 |
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