JPS606320U

JPS606320U - antenna device

Info

Publication number: JPS606320U
Application number: JP9734483U
Authority: JP
Inventors: 純瀬川; 孝允古野; 増島　俊雄
Original assignee: 日本電信電話株式会社; 三菱電機株式会社
Priority date: 1983-06-23
Filing date: 1983-06-23
Publication date: 1985-01-17

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of drawings]

第１図は従来のアンテナ装置の構成図、第２図は従来の
一実施例であるアンテナ装置の構成図、第３図はこの考
案の実施例を示すアンテナ装置の構成図である。図中、１は一次放射器、２は第１副反射鏡、３は第２副
反射鏡、４は主反射鏡、５はしやへい体である、なお、
図中同一あるいは相当部分には同一符号を付して示しで
ある。FIG. 1 is a block diagram of a conventional antenna device, FIG. 2 is a block diagram of an antenna device which is an embodiment of the conventional antenna device, and FIG. 3 is a block diagram of an antenna device showing an embodiment of this invention. In the figure, 1 is a primary radiator, 2 is a first sub-reflector, 3 is a second sub-reflector, 4 is a main reflector, and 5 is a thin body.
Identical or corresponding parts in the figures are indicated by the same reference numerals.

Claims

[Scope of utility model registration request]

(1) - An antenna configured such that there are multiple sub-reflectors between the primary radiator and the main reflector, and the sub-reflectors focus the radio waves to a sunspot excluding the phase center of the primary radiator. In the device, the sub-reflector and the plurality of sub-reflectors are arranged in a barrier body made of a part of a secondary conical surface surrounding a part of the radio wave path, and the edge of the sub-reflector is above the radio wave path. An antenna device characterized in that it is attached so that it does not exist in the antenna device.

(2) The antenna device according to claim (1), wherein the sub-reflector and the barrier are formed of metal.

(3) The antenna device according to claim 1, wherein the plurality of sub-reflectors are formed of fibers coated with metal and a dielectric material.

(4) The antenna device according to claim (1), wherein the shielding body is formed of a dielectric material.

(5) The antenna device according to claim 1, claim 2, or claim 4, wherein a radio wave absorber is attached to the inner wall surface of the shielding body.

(6) The antenna device according to claim 1 or 4, wherein a resistive material or a magnetic material is mixed in the dielectric material of the shielding body.