JPH0253625U - - Google Patents
Info
- Publication number
- JPH0253625U JPH0253625U JP13245688U JP13245688U JPH0253625U JP H0253625 U JPH0253625 U JP H0253625U JP 13245688 U JP13245688 U JP 13245688U JP 13245688 U JP13245688 U JP 13245688U JP H0253625 U JPH0253625 U JP H0253625U
- Authority
- JP
- Japan
- Prior art keywords
- axis
- rotational symmetry
- reflector
- sub
- focal point
- 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
Landscapes
- Aerials With Secondary Devices (AREA)
Description
第１図はこの考案の一実施例によるアンテナ装
置を示す断面図、第２図は従来のアンテナ装置を
示す断面図である。図において、１は１次放射器
、２は副反射鏡、３は放物線からなる主反射鏡、
４は回転対称軸、５は開口面、６は鏡面修整をし
た主反射鏡である。なお、図中同一符号は同一ま
たは相当部分を示す。
FIG. 1 is a sectional view showing an antenna device according to an embodiment of this invention, and FIG. 2 is a sectional view showing a conventional antenna device. In the figure, 1 is a primary radiator, 2 is a sub-reflector, 3 is a main reflector consisting of a parabola,
4 is a rotational symmetry axis, 5 is an aperture surface, and 6 is a mirror-finished main reflecting mirror. Note that the same reference numerals in the figures indicate the same or corresponding parts.
Claims (1)
ら軸をオフセツトした放物線からなる主反射鏡と
、回転対称軸を含む任意の断面が上記放物線の焦
点と１つの焦点を一致させ、他の焦点が回転対称
軸上にある楕円からなる副反射鏡と、回転対称軸
上にある１次放射器とからなるアンテナ装置にお
いて、１次放射器の位相中心を回転対称軸上にあ
る副反射鏡の焦点よりも副反射鏡に近づく方向に
ずらして設置し、１次放射器から放射された球面
波が副反射鏡、主反射鏡で反射された後、アンテ
ナ開口上での位相分布がほぼ一様となるように主
反射鏡を鏡面修整したことを特徴とするアンテナ
装置。 A main reflector whose arbitrary cross section including the axis of rotational symmetry is a parabola whose axis is offset from the axis of rotational symmetry, and whose arbitrary cross section including the axis of rotational symmetry makes one focal point coincide with the focus of the parabola and the other focal point. In an antenna device consisting of an elliptical sub-reflector whose axis is on the axis of rotational symmetry, and a primary radiator which is on the axis of rotational symmetry, the phase center of the primary radiator is set to The antenna is installed so that it is shifted closer to the sub-reflector than the focal point, and after the spherical wave emitted from the primary radiator is reflected by the sub-reflector and main reflector, the phase distribution on the antenna aperture is almost uniform. An antenna device characterized in that a main reflecting mirror is mirror-finished so that.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13245688U JPH0253625U (en) | 1988-10-11 | 1988-10-11 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13245688U JPH0253625U (en) | 1988-10-11 | 1988-10-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0253625U true JPH0253625U (en) | 1990-04-18 |
Family
ID=31389432
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13245688U Pending JPH0253625U (en) | 1988-10-11 | 1988-10-11 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0253625U (en) |
-
1988
- 1988-10-11 JP JP13245688U patent/JPH0253625U/ja active Pending
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