JPS6433213U

JPS6433213U -

Info

Publication number: JPS6433213U
Application number: JP12871287U
Authority: JP
Priority date: 1987-08-25
Filing date: 1987-08-25
Publication date: 1989-03-01

Description

[Brief explanation of the drawing]

第１図〜第４図はそれぞれこの考案の一実施例
によるヒユーズアンテナ装置を示す概略図、断面
図、回路図、アンテナパターン図、第５図〜第８
図はそれぞれ従来のヒユーズアンテナ装置を示す
概略図、回路図、アンテナパターン図である。図
中、１は円筒、２ａ〜２ｄはアンテナ、３はアン
テナ装置、４は分配器、５は分配器出力、６はア
ンテナ放射パターン、７は目標物、８は反射され
た電波、９はアンテナ装置、１０は分配器Ａ、１
１は分配器Ｂ、１２は切換スイツチ、１３ａ〜１
３ｄはアンテナ、１４は切換スイツチ出力、１５
はアンテナ放射パターン正の信号Ａ、１６はアン
テナ放射パターン負の信号Ａ、１７はアンテナ放
射パターン正の信号Ｂ、１８はアンテナ放射パタ
ーン負の信号Ｂである。なお、図中、同一符号は
同一、又は相当部分を示す。 FIGS. 1 to 4 are a schematic diagram, a sectional view, a circuit diagram, an antenna pattern diagram, and FIGS. 5 to 8, respectively, showing a fuse antenna device according to an embodiment of this invention.
The figures are a schematic diagram, a circuit diagram, and an antenna pattern diagram showing a conventional fuse antenna device, respectively. In the figure, 1 is a cylinder, 2a to 2d are antennas, 3 is an antenna device, 4 is a distributor, 5 is a distributor output, 6 is an antenna radiation pattern, 7 is a target, 8 is a reflected radio wave, 9 is an antenna device, 10 is distributor A, 1
1 is a distributor B, 12 is a changeover switch, 13a-1
3d is the antenna, 14 is the changeover switch output, 15
16 is a signal A with a positive antenna radiation pattern, 17 is a signal B with a positive antenna radiation pattern, and 18 is a signal B with a negative antenna radiation pattern. In addition, in the figures, the same reference numerals indicate the same or equivalent parts.

Claims

[Scope of utility model registration request]

An antenna device that includes a cylinder having an arbitrary diameter, an antenna placed on the outer cylindrical surface of the cylinder, and four antennas placed at angles of 0 degrees, 90 degrees, 180 degrees, and 270 degrees around the circumference of the cylinder. , a divider A that combines the signals of the two antennas located at 0 degrees and 180 degrees into a single signal with opposite phases in the antenna device, and has the same function as the divider A described above, Divider B combines the signals of two antennas located at 90 degrees and 270 degrees of A changeover switch that switches between two signals, and which part of the circumference of the cylinder the signal enters from depends on the timing of the signal from distributor A or distributor B that comes out from this changeover switch and the phase of the signal that each of distributors A and B have. A fuse antenna device characterized by being able to identify antennas.