JPS60103919U

JPS60103919U - antenna device

Info

Publication number: JPS60103919U
Application number: JP19537283U
Authority: JP
Inventors: 昇外山
Original assignee: 日本放送協会
Priority date: 1983-12-21
Filing date: 1983-12-21
Publication date: 1985-07-16
Also published as: JPH0136322Y2

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 the drawing]

第１図は本考案アンテナ装置の一実施例を示す構成図、
第２図Ａ−Ｇは、それぞれ、そのＡ−・Ａ′〜Ｇ−Ｇ’
の各部断面を示す断面図、第３図Ａ〜Ｄは正方形導波管
および十字導波管のモードパターンの説明図、第４図は
十字導波管のＴ′Ｅ２ｏ１モードの説明図、第５図Ａお
よびＢは、十字導波管でのＴＭ□１モード結合部の詳細
例を示す、それぞれ、部分断面図および正面図、第６図
は十字導波管のカットオフ波長特性を示す特性曲線図、
第７図は本考案の他の実施例を示す構成図である。１・・・正方形ホーン、２・・・モード変換器、３・・
・十字導波管、４・・・スリット、５・・・副導波管、
６・・・マジックＴ、６Ａ・・・差ポート、６Ｂ・・・
和ボート（１７，３ＧＨｚ高次モード出力端）、７・・
・短絡板、８・・・テーパー付十字導波管、９・・・モ
ード変換器、１０・・・正方形導波管円偏波発生器、１
１・・・偏分波器、１１Ａ・・・Ｖポート、ＩＩＢ・・
・Ｈポート、１２・・・フィルター、１２Ａ・・・１７
ＧＨ２帯アップリンク信号出力端、１２Ｂ・・・１７．
３ＧＨｚビ一コン波基本モード出力端、２０・・・アン
テナ装置、３０・・・パラボラ反射器、関・・・ビーコ
ン電波、ＤＬ・・・ダウンリンク送信電波、Ｕし・・ア
ップリンク受信電波。（Ａ）　　　　（Ｂ）　　　（Ｃ）　　　（Ｄ）　　　
（Ｅ）［−一一一一□−一］Ｔ「−−−１■ゴー］ｌ　
　ｌ　　ｒｌｔＶ　−、−−１１７１１７１１１＋１［
：］１　　　　　　１庄−ｐ」「」六−１−」４１第３図　　　　Ｌ　Ａ　）　　　　　　　　（ｔ’　　
　ｒ’ｉ　　　　ｉ−’ （Ｃ）　　　　　　　　　　　　（１トー□−の−−１ｒ″□Ｌ第５図１百］第６図FIG. 1 is a configuration diagram showing an embodiment of the antenna device of the present invention;
Figure 2 A-G are A-・A'~G-G', respectively.
3A to 3D are explanatory diagrams of the mode patterns of the square waveguide and the cross waveguide. FIG. 4 is an explanatory diagram of the T'E2o1 mode of the cross waveguide. Figures A and B are a partial cross-sectional view and a front view, respectively, showing detailed examples of the TM□1 mode coupling part in a cross waveguide. Figure 6 is a characteristic curve showing the cutoff wavelength characteristics of the cross waveguide. figure,
FIG. 7 is a block diagram showing another embodiment of the present invention. 1... Square horn, 2... Mode converter, 3...
・Cross waveguide, 4...slit, 5...sub waveguide,
6... Magic T, 6A... Difference port, 6B...
Japanese boat (17.3GHz higher mode output end), 7...
・Short-circuit plate, 8... Tapered cross waveguide, 9... Mode converter, 10... Square waveguide circularly polarized wave generator, 1
1...Polarization splitter, 11A...V port, IIB...
・H port, 12...filter, 12A...17
GH2 band uplink signal output end, 12B...17.
3 GHz beacon wave fundamental mode output end, 20... Antenna device, 30... Parabolic reflector, Seki... Beacon radio wave, DL... Downlink transmission radio wave, Ushi... Uplink reception radio wave. (A) (B) (C) (D)
(E) [-1111□-1]T ``---1 ■ Go] l
l rltV −, −−117117111+1[
:] 1 1 sho-p"6-1-" 41 Figure 3 L A ) (t'
r'i i-' (C) (1 toe □-'s--1r''□L Fig. 5 100] Fig. 6

Claims

[Scope of utility model registration request]

(1) In an antenna device that is shared by two or more frequency bands, a low frequency band and a high frequency band, and is excited in multiple modes including the fundamental mode of the waveguide and a higher order mode, The fundamental modes of each frequency band propagate,
A tapered waveguide having a cross-shaped cross section at one end that is so small that high-order modes in high frequency bands cannot exist, and the tapered waveguide having a cross section large enough to propagate any mode in high and low frequency bands. A waveguide system connected to the other end of the attached waveguide, an antenna opening connected via the waveguide system, and a higher-order mode existing in the waveguide system that is coupled and separated. An antenna device comprising: a higher-order mode coupling section.

(2) In the antenna device according to claim 1 of the utility model registration, the waveguide system and the tapered waveguide in which the high-order mode of the high frequency band exists are cross-sectionally shaped. An antenna device characterized by being a waveguide.