JPH0177001U

JPH0177001U -

Info

Publication number: JPH0177001U
Application number: JP1987172073U
Authority: JP
Priority date: 1987-11-12
Filing date: 1987-11-12
Publication date: 1989-05-24

Description

[Brief explanation of drawings]

第１図はこの考案の一実施例を示す部分断面図
、第２図、第３図、第４図はこの考案に係るしゆ
う動回転接合部の他の実施例を示す断面図、第５
図は従来の円形ＴＥ_１１モードを用いた可変長導
波管の一例を示す部分断面図、第６図は第５図に
示す可変長導波管においては回転ができないこと
を示す説明図、第７図は従来の円偏波ＴＥ_１１モ
ードを用いた回転接合部をもつた導波管の一例を
示す断面図である。１１，２１……矩形導波管、１２，２２……モ
ード変換器、１３ｂ，２３ｂ……円形導波管、１
４ｂ，２４ｂ……円偏波励振部、８……しゆう動
回転接合部。なお各図中同一符号は同一または相
当する部分を示す。 FIG. 1 is a partial sectional view showing one embodiment of this invention; FIGS. 2, 3, and 4 are sectional views showing other embodiments of the sliding rotary joint according to this invention;
The figure is a partial cross-sectional view showing an example of a variable length waveguide using the conventional circular TE ₁₁ mode, FIG. 6 is an explanatory diagram showing that rotation is not possible in the variable length waveguide shown in FIG. FIG. 7 is a cross-sectional view showing an example of a waveguide with a rotating junction using a conventional circularly polarized TE ₁₁ mode. 11, 21... Rectangular waveguide, 12, 22... Mode converter, 13b, 23b... Circular waveguide, 1
4b, 24b... Circularly polarized wave excitation section, 8... Swivel rotation joint section. Note that the same reference numerals in each figure indicate the same or corresponding parts.

Claims

[Claims for Utility Model Registration] (1) First and second circular waveguides each having a circularly polarized wave excitation section connected to the rectangular waveguide via a rectangular TE ₁₀ mode/circular TE ₁₁ mode converter. A variable length waveguide connected to a structure that can freely move in the direction of the tube axis and rotate freely with the tube axis as the rotation axis. (2) The variable length waveguide according to claim 1, which is movable in the direction of the tube axis and has a rotatable portion made of metal with the tube axis as the rotation axis. . (3) The variable length waveguide according to claim 2 of the utility model registration, characterized in that the end of the waveguide portion inside the metal rubbed structure is tapered. (4) λ on the inner waveguide part of the metal bonded structure
The variable length waveguide according to claim 2, characterized in that it is provided with a g/4 impedance transformer. (5) The variable length waveguide as claimed in claim 1 of the utility model registration claim, characterized in that the portion that is movable in the direction of the tube axis and that is rotatable about the tube axis has a λg/4 chain yoke contact structure. tube.