JPS6397909U - - Google Patents
Info
- Publication number
- JPS6397909U JPS6397909U JP19275886U JP19275886U JPS6397909U JP S6397909 U JPS6397909 U JP S6397909U JP 19275886 U JP19275886 U JP 19275886U JP 19275886 U JP19275886 U JP 19275886U JP S6397909 U JPS6397909 U JP S6397909U
- Authority
- JP
- Japan
- Prior art keywords
- reflecting mirror
- sub
- antenna device
- focal point
- utility
- 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.)
- Granted
Links
- 239000006096 absorbing agent Substances 0.000 claims description 2
- 239000010409 thin film Substances 0.000 claims description 2
- 239000004020 conductor Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
Landscapes
- Aerials With Secondary Devices (AREA)
Description
第１図はこの考案の一実施例を示す全体図、第
２図は部分図、第３図は遮蔽体の斜視図、第４図
と第５図は遮蔽体の展開図、第６図は放射特性図
、第７図と第８図および第９図はこの考案のさら
に他の実施例を示す部分図、第１０図は従来のア
ンテナ装置を示す全体図、第１１図は部分上面図
、第１２図は放射特性図である。
図において、１は主反射鏡、２は副反射鏡、３
は一次放射器、４は電波放射方向、５は架台、６
は調整機構、７は遮蔽体、８と９は錐体、１０と
１１は開口、１２は電波吸収体、１３は中空球冠
、１４は誘電体薄膜である。なお、各図中同一符
号は同一または相当部分を示す。
Figure 1 is an overall view showing one embodiment of this invention, Figure 2 is a partial view, Figure 3 is a perspective view of the shield, Figures 4 and 5 are developed views of the shield, and Figure 6 is a partial view. A radiation characteristic diagram, FIGS. 7, 8, and 9 are partial views showing still other embodiments of the invention, FIG. 10 is an overall view showing a conventional antenna device, and FIG. 11 is a partial top view. FIG. 12 is a radiation characteristic diagram. In the figure, 1 is the main reflector, 2 is the sub-reflector, and 3 is the main reflector.
is the primary radiator, 4 is the radio wave emission direction, 5 is the mount, 6
1 is an adjustment mechanism, 7 is a shield, 8 and 9 are cones, 10 and 11 are openings, 12 is a radio wave absorber, 13 is a hollow spherical crown, and 14 is a dielectric thin film. Note that the same reference numerals in each figure indicate the same or corresponding parts.
Claims (1)
焦点を共やく焦点の１つとする回転だ円面の一部
の副反射鏡と、上記副反射鏡の他方の共やく焦点
を電波位相中心とする一次放射器とを備えたアン
テナ装置において、上記副反射鏡の２つの共やく
焦点のそれぞれの近傍を頂点とし、上記副反射鏡
の周囲を導線にもつ２つの錐体の外包絡体を内面
とする遮蔽体を、上記一次放射器から上記副反射
鏡を経て上記主反射鏡の開口面に至る電波を遮蔽
することがないように備えたことを特徴とするア
ンテナ装置。 (2) 上記遮蔽体の内面に電波吸収体を装着した
ことを特徴とする実用新案登録請求の範囲第(1)
項記載のアンテナ装置。 (3) 上記遮蔽体に、上記副反射鏡の主反射鏡側
の共やく焦点を中心とする誘電体の中空球冠を装
着したことを特徴とする実用新案登録請求の範囲
第(1)項または第(2)項記載のアンテナ装置。 (4) 上記遮蔽体の上記副反射鏡の主反射鏡側の
共やく焦点の近傍に誘電体薄膜を装着したことを
特徴とする実用新案登録請求の範囲第(1)項また
は第(2)項記載のアンテナ装置。[Claims for Utility Model Registration] (1) A main reflecting mirror of a paraboloid of revolution, a sub-reflecting mirror of a part of an ellipsoid of revolution whose focal point is the focal point of this main reflecting mirror, and the above-mentioned sub-reflecting mirror. In an antenna device comprising a primary radiator whose radio wave phase center is at the other focal point of the sub-reflector, the vertices are located near the two common focal points of the sub-reflector, and the periphery of the sub-reflector is A shielding body whose inner surface is the outer envelope of two pyramids of the conductor is provided so as not to block radio waves from the primary radiator to the aperture of the main reflecting mirror via the sub-reflecting mirror. An antenna device characterized by: (2) Utility model registration claim No. (1) characterized in that a radio wave absorber is attached to the inner surface of the above-mentioned shielding body.
Antenna device as described in section. (3) Utility model registration claim (1) characterized in that the shielding body is equipped with a dielectric hollow spherical crown centered on the focal point of the main reflecting mirror of the sub-reflecting mirror. or the antenna device described in paragraph (2). (4) Claims (1) or (2) of the utility model registration claim, characterized in that a dielectric thin film is attached to the main reflecting mirror side of the sub-reflecting mirror of the shielding body, both near the focal point. Antenna device as described in section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19275886U JPH0349452Y2 (en) | 1986-12-15 | 1986-12-15 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19275886U JPH0349452Y2 (en) | 1986-12-15 | 1986-12-15 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6397909U true JPS6397909U (en) | 1988-06-24 |
| JPH0349452Y2 JPH0349452Y2 (en) | 1991-10-22 |
Family
ID=31148144
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19275886U Expired JPH0349452Y2 (en) | 1986-12-15 | 1986-12-15 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0349452Y2 (en) |
-
1986
- 1986-12-15 JP JP19275886U patent/JPH0349452Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0349452Y2 (en) | 1991-10-22 |
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