JPH0178098U

JPH0178098U -

Info

Publication number: JPH0178098U
Application number: JP1987172851U
Authority: JP
Priority date: 1987-11-12
Filing date: 1987-11-12
Publication date: 1989-05-25

Description

[Brief explanation of the drawing]

第１図〜第３図はこの考案の一実施例による電
波暗室を示す概略図と断面図、第４図〜第７図は
従来の電波暗室を示す概略図と断面図である。図中、１は電波暗室、２は電波吸収体、３は送
信装置、４は送信ホーン、５はレドーム、６は床
、７は直接波、８は反射波、９は受信装置、１０
はアンテナ、１１は回転台、１２は電波暗室、１
３はアンテナ放射パターン、１４は電波暗室、１
５ａ，１５ｂは扉である。なお、図中、同一符号
は同一、又は相当部分を示す。 1 to 3 are schematic diagrams and sectional views showing an anechoic chamber according to an embodiment of the invention, and FIGS. 4 to 7 are schematic diagrams and sectional views showing a conventional anechoic chamber. In the figure, 1 is an anechoic chamber, 2 is a radio wave absorber, 3 is a transmitting device, 4 is a transmitting horn, 5 is a radome, 6 is a floor, 7 is a direct wave, 8 is a reflected wave, 9 is a receiving device, 10
is an antenna, 11 is a rotating table, 12 is an anechoic chamber, 1
3 is the antenna radiation pattern, 14 is the anechoic chamber, 1
5a and 15b are doors. In addition, in the figures, the same reference numerals indicate the same or equivalent parts.

Claims

[Scope of utility model registration request]

The plan view of the building is rectangular, and the three-dimensional shape seen from the long side of the rectangle is L-shaped. An anechoic chamber in which a radio wave absorber is installed on the wall of the room, and the L-shaped vertical ceiling of this anechoic chamber. Or a transmitting device installed near the ceiling, a radome installed on the floor side in the vertical direction of the L shape to receive radio waves from this transmitting device, a receiving device to receive signals from this radome, and a horizontal direction in the L shape of the anechoic chamber. A transmitting device having the same function as the above-mentioned transmitting device installed on or near a wall on the vertical side of the L-shape, and a wall or near the wall on the opposite side of the horizontal direction of the L-shape from the vertical side that receives radio waves from this transmitting device. An antenna installed in the anechoic chamber, a receiving device having the same function as the receiving device that receives signals from this antenna, and an L-shaped vertical stand in the anechoic chamber when the transmitting device and receiving device on the radome side are in operation. A radio anechoic chamber characterized in that a door (swinging door) with an absorber is provided between the vertical and horizontal directions of the anechoic chamber so that the surface shape is a vertically long rectangle.