JPS604304A - Branching circuit - Google Patents

Abstract

PURPOSE:To prevent the influence of an auxiliary waveguide upon a main waveguide by inserting a radio wave absorbing body into a waveguide whose long sides are narrowed into a taper shape and connecting this waveguide to the end part of the auxiliary waveguide. CONSTITUTION:Terminating waveguides 10 are narrowed into a taper shape up to such dimensions that dimensions of long sides of an auxiliary waveguide 2 reflect completely radio waves having a frequency f1, and radio wave absorbing bodies are inserted in parts having dimensions smaller than those which reflect completely radio waves having the frequency f1. Therefore, radio waves having the frequency f1 which are branched to the auxiliary waveguide are taken out from coaxial tubes 6 by converters constituted with terminating waveguides 10 and coaxial tubes 6. Meanwhile, radio waves having a frequency f2 which are leaked to the auxiliary waveguide 2 are absorbed by radio wave abosrbing bodies 11. Consequently, cavity resonance of radio waves having the frequency f2 cannot be caused in the auxiliary waveguide 2, and radio waves having the frequency f2 which are leaked to the auxiliary waveguide 2 have no influence upon radio waves having the frequency f2 which pass through a main waveguide 1, and the increase of loss and a delay distortion are not generated.

Description

【発明の詳細な説明】 この発明は周波数帯の異なる二つ以上の電波を分波し、
または逆に合板する分波回路の改良に曲するものである
。[Detailed description of the invention] This invention separates two or more radio waves with different frequency bands,
Or conversely, it can be used to improve the branching circuit using plywood.

まず、第１図により、従来の分波回路を説明するが、こ
こでは二つの周波数ｈＣｈ　ｌ　ｆｌ＜ｆｚ　ｌよりな
る電波の分波を行なう回路を例にとる。First, a conventional demultiplexing circuit will be explained with reference to FIG. 1. Here, a circuit for demultiplexing radio waves having two frequencies hCh l fl < fz l will be taken as an example.

図中＋ｔ＋　ｋｌ二ツノ周′Ｖ数１１．ｆｚ　よジなる
Ｘａを導入する主導波管、（２）はこの主導波管（１）
と互いに管軸を直焚して接続され９周波数ｆｌの１！彼
を取り出す副４阪管、（３１はこの副４波管（２）と上
記主４敦管（１）とを電磁欧的に結合する結合孔。In the figure +t + kl two horns 'V number 11. fz Main wave tube that introduces the different Xa, (2) is this main wave tube (1)
1 of 9 frequencies fl connected to each other by directly firing the tube shaft! The secondary 4-wave tube (31) is a connecting hole that electromagnetically connects this secondary 4-wave tube (2) and the main 4-wave tube (1).

（４１ばこの結合孔（３１内に配置され９周波数ｆ２の
電波が上記結合孔（３１ヲ介して上記副導彼管（２）へ
入るのを阻止する直列共通素子、（５１は上記副導彼管
（２）の短絡面、（６）は上記副４波管（２）の壁面か
ら周波数ｆｌの軍阪會収りだすための同軸管、　（６ａ
）は上記同Ｉｌ！ｌＨ管（６）全構成する外導体、　（
６ｂｌは同じく内導体、　（６ｃｌは上記外導体（６ａ
）と内導体（６ｂ）の相互関係を保持するための誘電体
支持であるこのように構成された分波回路で、今、主導
波管（１）に周波数／＋＋／ｚの二つの電波が導入され
ｆＣＣ分会直列共振素子（４）は周波数ｆ２の電波に対
して直列共振状態になるため周波数１２の電Ｖは結合孔
ｆ３１の影響はほとんど受けない。(41 is a series common element disposed in the coupling hole (31) of the tobacco to prevent the radio wave of frequency f2 from entering the sub-conductor (2) via the coupling hole (31); (51 is the sub-conductor); (6a) is a coaxial tube for collecting the frequency fl from the wall surface of the sub-four-wave tube (2), (6a)
) is the same as above! lH tube (6) outer conductor, (
6bl is also the inner conductor (6cl is the above outer conductor (6a
) and the inner conductor (6b) with a dielectric support to maintain their mutual relationship, now two radio waves of frequency /++/z are transmitted to the main wave tube (1). Since the introduced fCC branch series resonant element (4) enters a series resonant state with respect to the radio wave of frequency f2, the electric wave of frequency 12 is hardly affected by the coupling hole f31.

したがって、主４波管ｊｌｌの後方に周波数／１の彼は
完全に反射するが周波数ｆ２の１４を仮は反射しないで
通過するような反射面を形成する。例えばテーバ状ｍｅ
管（図示せず）を設けることにより、主導仮管ｆｉ＋に
導入された二つの彼のうち周Ｖ数りの電Ｖを副導波管（
２）に発成する。副導波管（２）に入った周波数１１の
電Ｖは短絡面（５）と同軸管（６）で形成される同軸導
波管変換器より、同軸管（６）から取りだすことができ
る。Therefore, a reflecting surface is formed at the rear of the main four-wave tube jll, which completely reflects the light of frequency /1, but temporarily passes the light of frequency f2 of 14 without reflecting it. For example, Taberoid me
By providing a waveguide (not shown), the electric current V introduced into the main waveguide fi+ is transferred to the sub waveguide (
2) occurs. The electric voltage V of frequency 11 that has entered the sub-waveguide (2) can be extracted from the coaxial tube (6) by a coaxial waveguide converter formed by the short-circuit surface (5) and the coaxial tube (6).

従来の分数回路は以上のように構成されているため、直
列共振素子（４）が等測的な短絡面として作用する周波
数範囲が狭いので１周波数１２が「ｆ列共振累子（４）
の直列共振周波数からずれると、周波数ｆ２の電波の一
部は、わずかであるが。Since the conventional fractional circuit is configured as described above, the frequency range in which the series resonant element (4) acts as an isometric short-circuit surface is narrow, so one frequency 12 is "f-series resonant element (4)".
If it deviates from the series resonant frequency of , a small portion of the radio wave of frequency f2 will be lost.

結合孔（３）から副導波管（２）の中に漏れてくる。副
導波管（２）の中に漏れた周ｉ数１２の電波は、直列共
通素子（４１，訓導［Ｊ　ｔ２１と短絡面（５）で形成
される空洞共振器の共通周波数の一つに一致した時には
、ここで空洞共振奮起こすため、主導仮管（１）を通過
する周’ｅ、ｅｈの奄仮に対して損失の増加、遅延歪を
生じるという欠点があった。It leaks into the sub waveguide (2) from the coupling hole (3). The radio wave with a frequency of 12 that leaked into the sub-waveguide (2) is transmitted to one of the common frequencies of the cavity resonator formed by the series common element (41, t21 and the short-circuit surface (5)). When they match, cavity resonance is excited here, which has the drawback of increasing loss and causing delay distortion for the traverses of e and eh passing through the main tracheid (1).

この発明は以上のような従来の分彼回路の欠点を除去し
ようとするものである。This invention attempts to eliminate the drawbacks of the conventional divider circuits as described above.

以下、第２図に示すこの発明の一実施例について説明す
る。第２図において、０１は副導波管（２）に接続され
たテーパ状の終端用４ｖ管、ａｎは上記終端用導仮管の
中に挿入された電波吸収体である。An embodiment of the present invention shown in FIG. 2 will be described below. In FIG. 2, 01 is a tapered 4V terminal tube connected to the sub-waveguide (2), and an is a radio wave absorber inserted into the terminal tracheal tube.

ここで、終端用導彼管Ｏ１は訓導Ｖ管１２）の長辺寸法
全テーパに狭くしたものであり、少なくとも周Ｖ数ｆｔ
の電波が完全に反射する寸法までテーパに狭くシ、電波
吸収体０υは１周波数／＋の電波を完全に反射する寸法
より、小さい寸法の部分に挿入したものである。Here, the terminating guide tube O1 has a narrow taper over the entire long side dimension of the training V tube 12), and has a circumference of at least V number ft.
The radio wave absorber 0υ is inserted into a part whose size is smaller than that which completely reflects the radio wave of 1 frequency/+.

この場合には、主導仮管ｆｌ＋から副導波管（２）の中
に取りだした周波数ｆｔの電波は同軸管（６）と終端用
４ｖ管００のテーパで形成される同軸導Ｖ肯変換器によ
り、同＋１１１管（６）から取りだすことができる。−
万、主導Ｖ菅１１１から副４彼管（２）の中に漏れた周
波数１２の屯阪は、副導ｒＮ管（２；に接続さ扛ている
終端用導液管ａαの中へ入り、電波吸収体０υに吸収さ
扛る。In this case, the radio wave of frequency ft taken out from the main tracheal pipe fl+ into the sub waveguide (2) is transferred to the coaxial conductive V positive converter formed by the taper of the coaxial pipe (6) and the terminating 4V pipe 00. Therefore, it can be taken out from the +111 tube (6). −
10, the frequency 12 conductor leaking from the main V pipe 111 into the sub-fourth pipe (2) enters the terminal liquid pipe aα connected to the sub-conductor rN pipe (2), Absorbed by radio wave absorber 0υ.

したがって１以上のように構成された発成回路では、副
導波管（２）で周波数１２の電波の空洞共振は起こＶ得
す、主２ｓｖ管（１）を通過する周波数ｆ２の軍仮に対
して、損失の増加、遅延歪を与えることはないという特
徴を有している。Therefore, in a generator circuit configured as above 1, cavity resonance of the radio wave of frequency 12 will occur in the sub waveguide (2), and for the wave of frequency f2 passing through the main 2sv tube (1), Therefore, it has the characteristic that it does not increase loss or cause delay distortion.

なお１以上の説明では二つの周波数よりなる電波を主導
仮管に導入した場合を示したが、導入する電波及び合反
する′ｆＬＶの数に制限はないNote that in the above explanation, the case where radio waves with two frequencies are introduced into the main tracheal pipe is shown, but there is no limit to the number of radio waves to be introduced and the number of 'fLVs that can be combined.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は従来の分波回路？示す一部欠載の斜視図、第２
図はこの発明の一実施例金示す一部欠載の斜視図である
。 図中、（１）は主導ｖ′ｔｉ、　１２１は副導波管、（
３）は納会孔、（４）は直列共振素子、（６）は同軸管
、Ｑαは終端用導液管、ｆｌｌｌは電波吸収体である。 なお１図中、同一あるいは相当部分には同−符号全骨し
て示しである。 、　− 代理人　大　岩　増　雄 第２図 す１ 第１頁の続き ［相］発　明　者　礒田陽次 鎌倉市上町屋３２５番地三菱電機 株式会社情報電子研究所内 ■出　願　人　三菱電機株式会社 東京都千代田区丸の内２丁目２ 番３号Is Figure 1 a conventional branching circuit? Partially missing perspective view, No. 2
The figure is a perspective view, with some parts omitted, showing one embodiment of the present invention. In the figure, (1) is the leading waveguide, 121 is the sub waveguide, (
3) is a closing hole, (4) is a series resonant element, (6) is a coaxial pipe, Qα is a liquid guide pipe for termination, and flll is a radio wave absorber. In Figure 1, the same or corresponding parts are indicated by the same reference numerals. - Agent Masuo Oiwa 2nd Figure 1 Continuation of page 1 Inventor Yoji Isoda Mitsubishi Electric Corporation Information and Electronics Research Laboratory, 325 Kamimachiya, Kamakura City Applicant Mitsubishi Electric Corporation Tokyo 2-2-3 Marunouchi, Chiyoda-ku, Miyako

Claims (1)

【特許請求の範囲】[Claims] 主導波管と、この主導波管と結合孔を介して接続さ扛た
訓導Ｖ管と、この副専政管に接続された同軸線路とから
なる分彼沖１路において、上記副導彼管の長手方向に、
その長辺寸法全テーバ状に狭くした導波管を接続し、そ
の導波管中に電波吸収体を挿入したこと全特徴とする分
波回路。The sub-guide pipe is composed of a main wave pipe, a training V pipe connected to the main wave pipe via a coupling hole, and a coaxial line connected to the sub-private pipe. in the longitudinal direction of
A branching circuit characterized by connecting waveguides whose long sides are all tapered and having a radio wave absorber inserted into the waveguides.