JPS58139713U

JPS58139713U - Variable null antenna device for vertical polarization

Info

Publication number: JPS58139713U
Application number: JP3579582U
Authority: JP
Inventors: 島方　正志
Original assignee: パイオニア株式会社
Priority date: 1982-03-16
Filing date: 1982-03-16
Publication date: 1983-09-20

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図は従来の垂直偏波用可変ヌルアンテナ装置のブロ
ック図、第２図は第１図のアンテナ装置の位相差を示す
グラフ、第３図は本考案によるアンテナ装置の一実施例
のブロック図、第４図はループアンテナ単体の配列の系
を示す図、第５図は第４図の系のレベル指向性を示すグ
ラフ、第６図は第４図の系の位相指向性を示すグラフ、
第７図は第３図の装置の位相指向性を示すグラフ、第８
図及び第９図は第３図の装置の動作を説明するためのグ
ラフ、第１０図は本考案の他の実施例を示すブロック図
、第１１図は第１０２図中の一部の具体例を示す回路図
、及び第１２図は第１０図中の他の一部の具体例を示す
回路図である。Fig. 1 is a block diagram of a conventional variable null antenna device for vertical polarization, Fig. 2 is a graph showing the phase difference of the antenna device of Fig. 1, and Fig. 3 is a block diagram of an embodiment of the antenna device according to the present invention. Figure 4 is a diagram showing a system of arrangement of single loop antennas, Figure 5 is a graph showing the level directivity of the system shown in Figure 4, and Figure 6 is a graph showing the phase directivity of the system shown in Figure 4. ,
Figure 7 is a graph showing the phase directivity of the device in Figure 3;
9 and 9 are graphs for explaining the operation of the device shown in FIG. 3, FIG. 10 is a block diagram showing another embodiment of the present invention, and FIG. 11 is a specific example of a part of FIG. 102. FIG. 12 is a circuit diagram showing another specific example of FIG. 10.

Claims

[Scope of utility model registration request]

“A pair of loop antennas of the same shape whose feeding points are opposite to each other and positioned horizontally to the ground, parallel to each other and perpendicular to each other, and at least one A variable phase shifter that is connected to the output of the loop antenna and can change the amount of phase shift, and an adder that adds the output of this phase shifter and the output of the other loop antenna. Variable null antenna device for vertical polarization.