JP3195923B2 - Circularly polarized dielectric antenna - Google Patents

Circularly polarized dielectric antenna

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Publication number
JP3195923B2
JP3195923B2 JP14611191A JP14611191A JP3195923B2 JP 3195923 B2 JP3195923 B2 JP 3195923B2 JP 14611191 A JP14611191 A JP 14611191A JP 14611191 A JP14611191 A JP 14611191A JP 3195923 B2 JP3195923 B2 JP 3195923B2
Authority
JP
Japan
Prior art keywords
circular waveguide
dielectric
short
circularly polarized
circuiting
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
Application number
JP14611191A
Other languages
Japanese (ja)
Other versions
JPH04369905A (en
Inventor
米山　　務
章 高橋
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Kokusai Electric Inc
Original Assignee
Hitachi Kokusai Electric Inc
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Filing date
Publication date
Application filed by Hitachi Kokusai Electric Inc filed Critical Hitachi Kokusai Electric Inc
Priority to JP14611191A priority Critical patent/JP3195923B2/en
Publication of JPH04369905A publication Critical patent/JPH04369905A/en
Application granted granted Critical
Publication of JP3195923B2 publication Critical patent/JP3195923B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【０００１】[0001]

【産業上の利用分野】本発明は、衛星放送受信用のパラ
ボラアンテナの一次放射器に使用される円偏波誘電体ア
ンテナに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a circularly polarized dielectric antenna used as a primary radiator of a parabolic antenna for receiving satellite broadcasting.

【０００２】[0002]

【従来の技術】衛星放送の受信に広く用いられているオ
フセットパラボラアンテナの一次放射器の多くはホーン
型のアンテナを使用している。2. Description of the Related Art Most of primary radiators of offset parabolic antennas widely used for receiving satellite broadcasting use horn type antennas.

【０００３】[0003]

【発明が解決しようとする課題】しかして上記ホーン型
のアンテナは、指向性を高めるためにはホーンの外径を
大きくしなければならず、それがために支持や輸送の点
となっていた。However, in the horn-type antenna, the outer diameter of the horn must be increased in order to enhance the directivity, which is a point of support and transportation. .

【０００４】本発明は上記のような実情に鑑みてなされ
たもので、その目的とするところは、小型軽量でパラボ
ラアンテナの一次放射器に適した円偏波誘電体アンテナ
を提供することにある。The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a circularly polarized dielectric antenna suitable for a primary radiator of a parabolic antenna which is small and lightweight. .

【０００５】[0005]

【課題を解決するための手段及び作用】すなわち本発明
は、Means and Action for Solving the Problems That is, the present invention provides:

【０００６】（１） 前端に一対の矩形状の切り欠きを
対称状に形成した円形導波管と、この円形導波管の前端
に挿入されて装着された誘電体による誘電体部と、上記
円形導波管の後端を短絡する短絡板と、上記円形導波管
周壁部の上記短絡板より使用中心周波数の４分の１波長
分だけ前方に配設された励振用プローブとを備えるよう
にしたもので、円形導波管の外部に出ている誘電体部の
長さにより指向性の調整が可能であり、また、円形導波
管の前端に形成した切り欠きの深さと角度により水平、
垂直、各偏波成分の振幅位相を独立に調整できる点から
軸比の良好な放射器を実現でき、小型軽量の構成としな
がらもパラボラアンテナの一次放射器として適してい
る。(1) A circular waveguide having a pair of rectangular cutouts formed symmetrically at the front end, a dielectric portion made of a dielectric inserted and mounted at the front end of the circular waveguide, A short-circuiting plate for short-circuiting the rear end of the circular waveguide; and an excitation probe disposed in front of the short-circuiting plate on the peripheral wall of the circular waveguide by a quarter wavelength of the used center frequency. The directivity can be adjusted by the length of the dielectric part protruding outside the circular waveguide, and the horizontal direction can be adjusted by the depth and angle of the notch formed at the front end of the circular waveguide. ,
Since the amplitude and phase of each of the vertical and polarization components can be adjusted independently, a radiator having a good axial ratio can be realized, and it is suitable as a primary radiator of a parabolic antenna while having a small and lightweight configuration.

【０００７】（２） 円形導波管と、この円形導波管の
前端に挿入されて装着された誘電体による誘電体部と、
この誘電体部に対して平行に挾着された一対の導体板
と、上記円形導波管の後端を短絡する短絡板と、上記円
形導波管周壁部の上記短絡板より使用中心周波数の４分
の１波長分だけ前方に配設された励振用プローブとを備
えるようにしたもので、円形導波管の外部に出ている誘
電体部の長さにより指向性の調整が可能であり、また、
導波板の幅を調整することで水平、垂直、各偏波成分の
振幅位相を等しくして円偏波を直線偏波に変換可能とな
る。(2) a circular waveguide, and a dielectric portion made of a dielectric inserted and mounted at the front end of the circular waveguide;
A pair of conductor plates sandwiched in parallel with the dielectric portion, a short-circuit plate for short-circuiting the rear end of the circular waveguide, and An excitation probe disposed in front of a quarter wavelength is provided, and the directivity can be adjusted by the length of the dielectric portion outside the circular waveguide. ,Also,
By adjusting the width of the waveguide plate, it becomes possible to convert circularly polarized waves into linearly polarized waves by equalizing the amplitude and phase of the horizontal, vertical and polarization components.

【０００８】（３） 上記（１）（２）項において、円
形導波管内にその面方向が上記励振用プローブの軸方向
と直角にしてモードサプレッサを配置するようにしたも
ので、円形導波管の不連続による所望モード以外のモー
ド波の発生を防止することができ、特性が悪化するのを
避けることができる。(3) In the above item (1) or (2), the mode suppressor is disposed in the circular waveguide with the surface direction perpendicular to the axial direction of the excitation probe. Generation of a mode wave other than the desired mode due to discontinuity of the tube can be prevented, and deterioration of characteristics can be avoided.

【０００９】[0009]

【実施例】以下図面を参照して本発明の実施例を説明す
る。Embodiments of the present invention will be described below with reference to the drawings.

【００１０】図１は本発明を衛星放送受信用の円偏波誘
電体アンテナに適用した場合の一実施例の構成を示すも
ので、１は円形導波管、２は図では１つのみしか示して
いないが上記円形導波管１の前端面の周上の１８０°対
称位置に形成された矩形状の一対の切り欠き、３は円形
導波管１の切り欠き２を形成した前端側に挿入された細
長形状の誘電体部、４は円形導波管１の後端面を短絡す
る短絡板、５は円形導波管１内の短絡板４から管内波長
λｇの４分の１だけ離れた箇所に突出設置された給電点
となるプローブである。上記誘電体部３は、具体的には
テフロン、ポリエチレン、ポリスチレン等の誘電体を用
いて構成される。また、図示はしないが上記プローブ５
に給電線が接続され、この給電線よりプローブ５に給電
を実行することで到来する電波の受信を行なう。このよ
うな構成にあって、わが国の衛星放送の周波数は１１．
７〜１２ＧＨｚであり、この周波数帯の電波を受信する
ものとしてその動作について説明する。FIG. 1 shows the configuration of an embodiment in which the present invention is applied to a circularly polarized dielectric antenna for receiving satellite broadcasting, wherein 1 is a circular waveguide, and 2 is only one in the figure. Although not shown, a pair of rectangular cutouts 3 formed at 180 ° symmetrical positions on the circumference of the front end face of the circular waveguide 1 are located on the front end side of the circular waveguide 1 where the cutouts 2 are formed. The inserted elongated dielectric portion 4 is a short-circuit plate for short-circuiting the rear end face of the circular waveguide 1, and 5 is separated from the short-circuit plate 4 in the circular waveguide 1 by a quarter of the guide wavelength λg. The probe is a power feeding point protruding and installed at a location. The dielectric part 3 is specifically formed using a dielectric such as Teflon, polyethylene, or polystyrene. Although not shown, the probe 5
A power supply line is connected to the power supply line, and power is supplied to the probe 5 from the power supply line to receive an incoming radio wave. In such a configuration, the frequency of satellite broadcasting in Japan is 11.
The operation will be described assuming that a radio wave of 7 to 12 GHz is received in this frequency band.

【００１１】上記１２ＧＨｚ程度の電波を受信するため
には、円形導波管１のカットオフ特性を考慮すると管の
内径が１０．５mm以上必要となる。ここで同管１の内径
を１１．６mmとすると、この円形導波管１内を電波がＴ
Ｅ11のモードで伝送することとなり、その管内波長λｇ
＝４２．３mmとなる。In order to receive the above-mentioned radio wave of about 12 GHz, the inner diameter of the circular waveguide 1 must be 10.5 mm or more in consideration of the cutoff characteristics of the circular waveguide 1. Here, assuming that the inner diameter of the tube 1 is 11.6 mm, a radio wave is transmitted through the inside of the circular waveguide 1.
The transmission is performed in the mode of E11, and the guide wavelength λg
= 42.3 mm.

【００１２】衛星放送から伝搬してきた円偏波の電波は
誘電体部３に達し、該誘電体部３内を表面波として流れ
た後、円形導波管１の切り欠き２にて円偏波／直線偏波
変換されて直線偏波となる。そして、この直線偏波が円
形導波管１内を伝搬して、短絡板４からλｇ／４（＝約
１０．６mm）の距離にあって整合がとられているプロー
ブ５により、図示しない給電線にまで導出されるもの
で、全体として円偏波アンテナとして動作するようにな
るものである。The circularly polarized radio wave propagated from the satellite broadcast reaches the dielectric portion 3, flows through the dielectric portion 3 as a surface wave, and is then circularly polarized by the notch 2 of the circular waveguide 1. / Linear polarization conversion to linear polarization. Then, this linearly polarized wave propagates in the circular waveguide 1, and is supplied by a probe 5 (not shown) at a distance of λg / 4 (= about 10.6 mm) from the short-circuit plate 4 and matched. It is led out to the electric wire and operates as a circularly polarized antenna as a whole.

【００１３】次に本発明の他の実施例を図２及び図３に
より示す。図２はその構成を示す斜視図であり、図中、
１１は円形導波管、１３は円形導波管１１の前端側に挿
入された細長形状の誘電体部、１２，１２は円形導波管
１１より突出している誘電体部１３の後端部分で円形導
波管１１と接するようにして誘電体部１３に平行に挾着
された一対の導体板、１４は円形導波管１１の後端面を
短絡する短絡板、１５は円形導波管１１内の短絡板１４
から管内波長λｇの４分の１だけ離れた箇所に突出設置
された給電点となるプローブ、１６はプローブ１５と図
示しない給電線とを接続するためのコネクタ、１７は導
体板１２，１２の両端間にあって導体板１２，１２を固
定する絶縁体、１８は円形導波管１１内の導体板１２，
１２とコネクタ１６との間に特定角度で設置されたモー
ドサプレッサである。上記誘電体部１３も、具体的には
テフロン、ポリエチレン、ポリスチレン等の誘電体を用
いて構成される。また、プローブ１５に図示しない給電
線が接続され、この給電線よりコネクタ１６を介してプ
ローブ１５に給電を実行することで到来する電波の受信
を行なう。Next, another embodiment of the present invention is shown in FIG. 2 and FIG. FIG. 2 is a perspective view showing the configuration.
Reference numeral 11 denotes a circular waveguide, 13 denotes an elongated dielectric portion inserted at the front end side of the circular waveguide 11, and 12 and 12 denote rear end portions of the dielectric portion 13 protruding from the circular waveguide 11. A pair of conductor plates sandwiched in parallel with the dielectric portion 13 so as to be in contact with the circular waveguide 11, a short-circuit plate 14 for short-circuiting the rear end face of the circular waveguide 11, and 15 inside the circular waveguide 11. Short circuit board 14
, A probe serving as a power supply point protrudingly installed at a distance of one-fourth of the wavelength λg in the tube, 16 a connector for connecting the probe 15 to a power supply line (not shown), and 17 both ends of the conductor plates 12 An insulator 18 is provided between the conductor plates 12 and 12 to fix the conductor plates 12 and 12.
This is a mode suppressor installed at a specific angle between the connector 12 and the connector 16. The dielectric portion 13 is also specifically formed using a dielectric material such as Teflon, polyethylene, and polystyrene. A power supply line (not shown) is connected to the probe 15, and power is supplied to the probe 15 from the power supply line via the connector 16 to receive incoming radio waves.

【００１４】図３は上記図２の左手より誘電体部１３、
導体板１２，１２及び円形導波管１１を見た正面図であ
る。円偏波とは平面波の電界ベクトルが円の軌道を描き
ながら伝搬する電波であり、この円偏波が発生するため
には伝搬方向の垂直平面上で互いに直交する２つの偏波
成分の振幅が等しく、かつ、その偏波成分の位相が９０
°ずれているという２つの条件が必要である。誘電体部
１３を挟んでいる導体板１２は、プローブ１５と所定の
ある角度をもって取付けられる。ここで、導体板１２，
１２に垂直な偏波成分をＥv 、水平な偏波成分をＥH と
すると、導体板１２，１２がある位置では両者の位相速
度が異なるためにＥv とＥH に位相差が生じる。この性
質を利用して、導体板１２の幅ｌｃを調節することによ
り９０°の位相差を作り出し、導体板１２とプローブ１
５に対する角度θを調節し、ＥvとＥH の振幅を等しく
するという方法を用いて円偏波を直線偏波に変換するこ
とができる。理論的には、θ＝４５°で垂直な偏波成分
Ｅv と水平な偏波成分ＥHの振幅が等しくなる。また、
図３に示すような方形の構造でＥv とＥH の位相定数を
近似すると、衛星放送の周波数１１．８５ＧＨｚではｌ
ｃ＝８．３５mmで該位相差が９０°となる。FIG. 3 shows the dielectric portion 13 from the left hand of FIG.
It is the front view which looked at the conductor plates 12 and 12 and the circular waveguide 11. Circular polarization is a radio wave in which the electric field vector of a plane wave propagates along a circular orbit. In order to generate this circular polarization, the amplitudes of two polarization components orthogonal to each other on a vertical plane in the propagation direction are determined. Equal and the phase of the polarization component is 90
The two conditions that are shifted from each other are required. The conductor plate 12 sandwiching the dielectric portion 13 is attached to the probe 15 at a predetermined angle. Here, the conductor plate 12,
Assuming that the polarization component perpendicular to 12 is Ev and the horizontal polarization component is EH, there is a phase difference between Ev and EH at a position where the conductor plates 12 and 12 are located, because the phase velocities of the two are different. By utilizing this property, a phase difference of 90 ° is created by adjusting the width lc of the conductor plate 12, and the conductor plate 12 and the probe 1
The circularly polarized wave can be converted to a linearly polarized wave by adjusting the angle .theta. With respect to 5 and making the amplitudes of Ev and EH equal. Theoretically, at θ = 45 °, the amplitudes of the vertical polarization component Ev and the horizontal polarization component EH become equal. Also,
When the phase constants of Ev and EH are approximated by a rectangular structure as shown in FIG. 3, at a satellite broadcast frequency of 11.85 GHz, 1
When c = 8.35 mm, the phase difference becomes 90 °.

【００１５】さらに、上記図１では示さなかったが、円
形導波管１１の不連続により発生するＴＥ11以外のモー
ド波が発生した場合は、アンテナとしての特性を劣化さ
せることとなるので、これを防止するために上記モード
サプレッサ１８を配設する。Further, although not shown in FIG. 1, when a mode wave other than TE11 is generated due to discontinuity of the circular waveguide 11, the characteristics of the antenna are deteriorated. In order to prevent this, the mode suppressor 18 is provided.

【００１６】図４はモードサプレッサ１８の一例を示す
ものである。例えば長辺２２．５mm、短辺８mmの金属薄
板に図中に斜線で示す如く刻設し、これを円形導波管１
１内の誘電体部１３とプローブ１５との間に、その平面
がプローブ１５の軸方向と垂直となるように配置して取
り付けるものであり、図２及び図３に示すアンテナだけ
でなく、上記図１に示したアンテナに対しても同様に取
付可能となる。FIG. 4 shows an example of the mode suppressor 18. For example, it is engraved on a thin metal plate having a long side of 22.5 mm and a short side of 8 mm as shown by oblique lines in FIG.
1 is arranged and attached between the dielectric portion 13 and the probe 15 in such a manner that the plane thereof is perpendicular to the axial direction of the probe 15. Not only the antenna shown in FIGS. The antenna can be similarly attached to the antenna shown in FIG.

【００１７】図５に上記図１に示した円偏波誘電体アン
テナの軸比特性の測定値を示す。この場合、切り欠き２
の深さｌａ＝８．４mmとして、軸比は１０ｄＢ以下の帯
域で約６００ＭＨｚとなっており、充分広い特性となっ
ている。FIG. 5 shows measured values of the axial ratio characteristics of the circularly polarized dielectric antenna shown in FIG. In this case, notch 2
And the axial ratio is about 600 MHz in a band of 10 dB or less, which is a sufficiently wide characteristic.

【００１８】続く図６に上記図１に示した円偏波誘電体
アンテナの指向特性を示す。半値幅は誘電体部３の円形
導波管１より突出した長さｌにより異なり、ｌ＝４６mm
で約８０°と広い値となっている。このｌの値を８３mm
と長く設定すると指向性は鋭くなり、半値幅は約５０°
となる。なお、電圧定在波比ＶＳＷＲは１．５以下で約
６００ＭＨｚの帯域となる。FIG. 6 shows the directional characteristics of the circularly polarized dielectric antenna shown in FIG. The half width varies depending on the length l of the dielectric portion 3 protruding from the circular waveguide 1, and l = 46 mm
Is a wide value of about 80 °. 83mm
If it is set long, the directivity becomes sharp and the half width is about 50 °
Becomes Note that the voltage standing wave ratio VSWR is 1.5 or less, and is in a band of about 600 MHz.

【００１９】上記に述べた如く、円形導波管１（１１）
の外部に突出している誘電体部３（１３）の長さにより
指向性の調整を行なうことができると共に、円形導波管
１の前端面に形成した切り欠き２（導体板１２，１２）
の深さ（幅）及びその角度により垂直な偏波成分Ｅv と
水平な偏波成分ＥH との振幅位相を独立に調整できる。As described above, the circular waveguide 1 (11)
The directivity can be adjusted by the length of the dielectric portion 3 (13) protruding outside of the circular waveguide 1, and the notch 2 (conductor plates 12, 12) formed on the front end face of the circular waveguide 1
The amplitude and phase of the vertical polarization component Ev and the horizontal polarization component EH can be adjusted independently by the depth (width) and the angle thereof.

【００２０】以上の性質により、小型で軸比が良好な放
射器を構成することが可能となり、パラボラアンテナの
一次放射器として適当な指向性を有する円偏波誘電体ア
ンテナを実現できる。With the above properties, it is possible to construct a small-sized radiator having a good axial ratio, and to realize a circularly polarized dielectric antenna having appropriate directivity as a primary radiator of a parabolic antenna.

【００２１】衛星放送の使用周波数帯域ではこの円偏波
誘電体アンテナは約φ１２mm、長さ約８０mmと非常に小
型のもので実現できるため、単体としてのみならず、パ
ラボラアンテナの一次放射器、平面アンテナの素子等と
しても使用できる。また、衛星放送に限らず、その他Ｓ
ＨＦ、ＥＨＦにおいても同様に実施可能であることは言
うまでもない。In the frequency band used for satellite broadcasting, this circularly polarized dielectric antenna can be realized as a very small one having a diameter of about 12 mm and a length of about 80 mm. It can also be used as an antenna element or the like. In addition to satellite broadcasting, other S
Needless to say, the present invention can be similarly applied to HF and EHF.

【００２２】[0022]

【発明の効果】以上詳記した如く本発明によれば、As described above, according to the present invention,

【００２３】（１） 前端に一対の矩形状の切り欠きを
対称状に形成した円形導波管と、この円形導波管の前端
に挿入されて装着された誘電体による誘電体部と、上記
円形導波管の後端を短絡する短絡板と、上記円形導波管
周壁部の上記短絡板より使用中心周波数の４分の１波長
分だけ前方に配設された励振用プローブとを備えるよう
にしたので、円形導波管の外部に出ている誘電体部の長
さにより指向性の調整が可能であり、また、円形導波管
の前端に形成した切り欠きの深さと角度により水平、垂
直、各偏波成分の振幅位相を独立に調整できる点から軸
比の良好な放射器を実現でき、小型軽量の構成としなが
らもパラボラアンテナの一次放射器として適している。(1) A circular waveguide having a pair of rectangular cutouts formed symmetrically at the front end, a dielectric portion made of a dielectric inserted and mounted at the front end of the circular waveguide, A short-circuiting plate for short-circuiting the rear end of the circular waveguide; and an excitation probe disposed in front of the short-circuiting plate on the peripheral wall of the circular waveguide by a quarter wavelength of the used center frequency. Therefore, the directivity can be adjusted by the length of the dielectric part protruding outside the circular waveguide, and the horizontal and horizontal can be adjusted by the depth and angle of the notch formed at the front end of the circular waveguide. Since the amplitude and phase of each of the vertical and polarization components can be adjusted independently, a radiator having a good axial ratio can be realized, and it is suitable as a primary radiator of a parabolic antenna while having a small and lightweight configuration.

【００２４】（２） 円形導波管と、この円形導波管の
前端に挿入されて装着された誘電体による誘電体部と、
この誘電体部に対して平行に挾着された一対の導体板
と、上記円形導波管の後端を短絡する短絡板と、上記円
形導波管周壁部の上記短絡板より使用中心周波数の４分
の１波長分だけ前方に配設された励振用プローブとを備
えるようにしたので、円形導波管の外部に出ている誘電
体部の長さにより指向性の調整が可能であり、また、導
波板の幅を調整することで水平、垂直、各偏波成分の振
幅位相を等しくして円偏波を直線偏波に変換可能とな
る。(2) a circular waveguide, and a dielectric portion made of a dielectric inserted and mounted at the front end of the circular waveguide;
A pair of conductor plates sandwiched in parallel with the dielectric portion, a short-circuit plate for short-circuiting the rear end of the circular waveguide, and With the excitation probe disposed in front by a quarter wavelength, the directivity can be adjusted by the length of the dielectric portion that is outside the circular waveguide. Further, by adjusting the width of the waveguide plate, it becomes possible to convert the circularly polarized wave into the linearly polarized wave by equalizing the amplitude and phase of the horizontal, vertical and polarization components.

【００２５】（３） 上記（１）（２）項において、円
形導波管内にその面方向が上記励振用プローブの軸方向
と直角にしてモードサプレッサを配置するようにしたの
で、円形導波管の不連続による所望モード以外のモード
波の発生を防止することができ、特性が悪化するのを避
けることができる。(3) In the above item (1) or (2), the mode suppressor is arranged in the circular waveguide so that its plane direction is perpendicular to the axial direction of the excitation probe. , It is possible to prevent the generation of a mode wave other than the desired mode due to the discontinuity of the above, and to prevent the characteristics from being deteriorated.

【図面の簡単な説明】[Brief description of the drawings]

【図１】本発明の一実施例に係るアンテナ構造を示す側
面図。FIG. 1 is a side view showing an antenna structure according to one embodiment of the present invention.

【図２】本発明の他の実施例に係るアンテナ構造を示す
側面図。FIG. 2 is a side view showing an antenna structure according to another embodiment of the present invention.

【図３】図２と同じく本発明の他の実施例に係るアンテ
ナ構造を示す側面図。FIG. 3 is a side view showing an antenna structure according to another embodiment of the present invention, similarly to FIG. 2;

【図４】図２及び図３のモードサプレッサの構成例を示
す図。FIG. 4 is a diagram showing a configuration example of the mode suppressor of FIGS. 2 and 3;

【図５】図１に示した円偏波誘電体アンテナの軸比特性
の測定値を示す図。FIG. 5 is a view showing measured values of axial ratio characteristics of the circularly polarized dielectric antenna shown in FIG. 1;

【図６】図１に示した円偏波誘電体アンテナの指向特性
を示す図。FIG. 6 is a diagram showing the directional characteristics of the circularly polarized dielectric antenna shown in FIG. 1;

【符号の説明】[Explanation of symbols]

１，１１…円形導波管、２…切り欠き、３，１３…誘電
体部、４，１４…短絡板、５，１５…プローブ、１２，
１２…導体板、１６…コネクタ、１７，１７…絶縁体、
１８…モードサプレッサ。1, 11: circular waveguide, 2: notch, 3, 13: dielectric part, 4, 14: short-circuit plate, 5, 15: probe, 12,
12 ... conductor plate, 16 ... connector, 17, 17 ... insulator,
18… Mode suppressor.

フロントページの続き (56)参考文献 米国特許4274097（ＵＳ，Ａ) 米国特許3761938（ＵＳ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) H01Q 13/24,13/02 H01P 1/17 ＪＩＣＳＴファイル（ＪＯＩＳ)Continuation of the front page (56) References US Patent No. 4274097 (US, A) US Patent No. 3761938 (US, A) (58) Fields investigated (Int. Cl. 7 , DB name) H01Q 13 / 24,13 / 02 H01P 1/17 JICST file (JOIS)

Claims (3)

(57)【特許請求の範囲】(57) [Claims] 【請求項１】 前端に一対の矩形状の切り欠きを対称状
に形成した円形導波管と、この円形導波管の前端に挿入
されて装着された誘電体による誘電体部と、上記円形導
波管の後端を短絡する短絡板と、上記円形導波管周壁部
の上記短絡板より使用中心周波数の４分の１波長分だけ
前方に配設された励振用プローブとを具備したことを特
徴とする円偏波誘電体アンテナ。1. A circular waveguide having a pair of rectangular cutouts formed symmetrically at a front end, a dielectric portion made of a dielectric inserted and mounted at the front end of the circular waveguide, and A short-circuiting plate for short-circuiting the rear end of the waveguide; and an excitation probe disposed in front of the short-circuiting plate on the peripheral wall of the circular waveguide by a quarter wavelength of the operating center frequency. A circularly polarized dielectric antenna, characterized in that: 【請求項２】 円形導波管と、この円形導波管の前端に
挿入されて装着された誘電体による誘電体部と、この誘
電体部に対して平行に挾着された一対の導体板と、上記
円形導波管の後端を短絡する短絡板と、上記円形導波管
周壁部の上記短絡板より使用中心周波数の４分の１波長
分だけ前方に配設された励振用プローブとを具備したこ
とを特徴とする円偏波誘電体アンテナ。2. A circular waveguide, a dielectric portion made of a dielectric inserted and mounted at the front end of the circular waveguide, and a pair of conductor plates sandwiched in parallel with the dielectric portion. A short-circuiting plate for short-circuiting the rear end of the circular waveguide, and an excitation probe disposed in front of the short-circuiting plate on the peripheral wall of the circular waveguide by a quarter wavelength of the used center frequency. A circularly polarized dielectric antenna comprising: 【請求項３】 上記円形導波管内にその面方向が上記励
振用プローブの軸方向と直角にして配置されたモードサ
プレッサを有することを特徴とする請求項１または請求
項２記載の円偏波誘電体アンテナ。3. A circularly polarized wave according to claim 1, further comprising a mode suppressor disposed in said circular waveguide such that a plane direction thereof is perpendicular to an axial direction of said excitation probe. Dielectric antenna.
JP14611191A 1991-06-18 1991-06-18 Circularly polarized dielectric antenna Expired - Fee Related JP3195923B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14611191A JP3195923B2 (en) 1991-06-18 1991-06-18 Circularly polarized dielectric antenna

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14611191A JP3195923B2 (en) 1991-06-18 1991-06-18 Circularly polarized dielectric antenna

Publications (2)

Publication Number Publication Date
JPH04369905A JPH04369905A (en) 1992-12-22
JP3195923B2 true JP3195923B2 (en) 2001-08-06

Family

ID=15400404

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14611191A Expired - Fee Related JP3195923B2 (en) 1991-06-18 1991-06-18 Circularly polarized dielectric antenna

Country Status (1)

Country Link
JP (1) JP3195923B2 (en)

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