JPH0366213U - - Google Patents
Info
- Publication number
- JPH0366213U JPH0366213U JP12515989U JP12515989U JPH0366213U JP H0366213 U JPH0366213 U JP H0366213U JP 12515989 U JP12515989 U JP 12515989U JP 12515989 U JP12515989 U JP 12515989U JP H0366213 U JPH0366213 U JP H0366213U
- Authority
- JP
- Japan
- Prior art keywords
- reflector
- antenna
- radio wave
- wave absorber
- mirror surface
- 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
- 239000006096 absorbing agent Substances 0.000 claims description 5
- 230000003287 optical effect Effects 0.000 claims description 2
- 230000009977 dual effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Aerials With Secondary Devices (AREA)
Description
第１図は本考案の第１の実施例を示す図、第２
図は本考案の第２の実施例を示す図、第３図は本
考案の第３の実施例を示す図、第４図は本考案の
第４の実施例を示す図である。
１……焦点、２，３……ホーン、４……集束反
射鏡、４ａ……電波吸収体がない場合に光路長一
定となる集束反射鏡の鏡面形状、５……副反射鏡
、６……主反射鏡、７，７ａ，７ｂ，７ｃ……電
波吸収体、８，９……アンテナ開口、１０ａ，１
０ｂ，１１ａ，１１ｂ……光線。
FIG. 1 is a diagram showing the first embodiment of the present invention, and FIG.
The figure shows a second embodiment of the invention, FIG. 3 shows a third embodiment of the invention, and FIG. 4 shows a fourth embodiment of the invention. 1... Focal point, 2, 3... Horn, 4... Focusing reflector, 4a... Mirror surface shape of the focusing reflector that makes the optical path length constant when there is no radio wave absorber, 5... Sub-reflector, 6... ...Main reflecting mirror, 7, 7a, 7b, 7c... Radio wave absorber, 8, 9... Antenna aperture, 10a, 1
0b, 11a, 11b... rays.
Claims (1)
集束反射鏡と、集束反射鏡の焦点上または焦点近
傍に置かれた２つホーンからなるオフセツトアン
テナにおいて、 集束反射鏡反射面上のエツジ近傍および副反射
鏡反射面上のエツジ近傍のいずれにも電波吸収体
を装着したことを特徴とする双ビームオフセツト
アンテナ。 ２ ホーンから出た光線が電波吸収体を貫通して
反射鏡面で反射し、アンテナ開口面に至るまでの
光路長を電波吸収体の貼られていない部分の反射
鏡面で反射してアンテナ開口面にいたる光線の光
線長と同一の電気長となるように反射鏡面を修整
した請求項１記載の双ビームオフセツトアンテナ
。[Claims for Utility Model Registration] 1. In an offset antenna consisting of a main reflector, a sub-reflector, at least one focusing reflector, and two horns placed on or near the focal point of the focusing reflector. A dual beam offset antenna characterized in that a radio wave absorber is attached both near the edge of the reflecting surface of the focusing reflector and near the edge of the reflecting surface of the sub-reflector. 2. The light beam emitted from the horn passes through the radio wave absorber and is reflected by the reflective mirror surface, and the optical path length to reach the antenna aperture is reflected by the reflective mirror surface on the part where the radio wave absorber is not attached and reaches the antenna aperture surface. 2. The twin beam offset antenna according to claim 1, wherein the reflecting mirror surface is modified to have the same electrical length as the ray length of the rays reaching the antenna.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12515989U JPH0366213U (en) | 1989-10-27 | 1989-10-27 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12515989U JPH0366213U (en) | 1989-10-27 | 1989-10-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0366213U true JPH0366213U (en) | 1991-06-27 |
Family
ID=31673045
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12515989U Pending JPH0366213U (en) | 1989-10-27 | 1989-10-27 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0366213U (en) |
-
1989
- 1989-10-27 JP JP12515989U patent/JPH0366213U/ja active Pending
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