JPH0575201B2 - - Google Patents
Info
- Publication number
- JPH0575201B2 JPH0575201B2 JP19402586A JP19402586A JPH0575201B2 JP H0575201 B2 JPH0575201 B2 JP H0575201B2 JP 19402586 A JP19402586 A JP 19402586A JP 19402586 A JP19402586 A JP 19402586A JP H0575201 B2 JPH0575201 B2 JP H0575201B2
- Authority
- JP
- Japan
- Prior art keywords
- waveguide
- fundamental wave
- metal plate
- mode
- transmission line
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- 230000005540 biological transmission Effects 0.000 claims description 25
- 239000002184 metal Substances 0.000 claims description 25
- 230000008878 coupling Effects 0.000 claims description 18
- 238000010168 coupling process Methods 0.000 claims description 18
- 238000005859 coupling reaction Methods 0.000 claims description 18
- 230000005684 electric field Effects 0.000 claims description 10
- 239000004020 conductor Substances 0.000 claims description 7
- 230000001902 propagating effect Effects 0.000 claims description 5
- 238000005192 partition Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 238000000638 solvent extraction Methods 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
Landscapes
- Control Of Motors That Do Not Use Commutators (AREA)
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、マイクロ波帯の必要な周波数帯域を
通過させ、不要な周波数帯域を阻止する導波管形
帯域阻止波器に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a waveguide band-stop waveguide that passes necessary frequency bands in the microwave band and blocks unnecessary frequency bands.
〔従来技術〕
従来、マイクロ波帯における導波管形帯域阻止
波器は、第２図に示すように導波管１の広面の
管壁に不要波結合用の長孔２が設けられ、その外
部にはその不要波に共振するキヤビテイ３が取付
けられた構造であつた。また、このような導波管
形帯域阻止波器を同軸伝送系に用いる場合は、
第３図に示すように導波管１の入力端４及び出力
端５に同軸導波管変換器６，７をそれぞれ取り付
けていた。[Prior Art] Conventionally, a waveguide-type band-stop device in the microwave band has a long hole 2 for coupling unnecessary waves in the wide wall of a waveguide 1, as shown in FIG. The structure was such that a cavity 3 was attached to the outside to resonate with the unwanted waves. In addition, when using such a waveguide band-stop waveform in a coaxial transmission system,
As shown in FIG. 3, coaxial waveguide converters 6 and 7 were attached to the input end 4 and output end 5 of the waveguide 1, respectively.
しかしながら、第２図及び第３図に示すような
導波管形帯域阻止波器では、キヤビテイ３が導
波管１の外に突き出て、上下方向の寸法が大とな
る問題点があつた。また、第３図に示す同軸伝送
系で用いる導波管形帯域阻止波器では、同軸導
波管変換器６，７を用いる為に管軸方向も寸法が
長くなる問題点があつた。
However, the waveguide-type band-stop waveform device shown in FIGS. 2 and 3 has a problem in that the cavity 3 protrudes outside the waveguide 1, increasing the vertical dimension. Furthermore, the waveguide type band-stop waveguide used in the coaxial transmission system shown in FIG. 3 has the problem of being long in the tube axis direction due to the use of coaxial waveguide converters 6 and 7.
本発明の目的は、小形・軽量化が図れ、且つ製
造コストの低減を図れる導波管形帯域阻止波器
を提供するにある。 An object of the present invention is to provide a waveguide type band-stop waveguide which can be made smaller and lighter, and which can reduce manufacturing costs.
上記の目的を達成するための本発明の構成を実
施例に対応する第１図を参照して説明すると、本
発明は、導波管１内に少なくとも１枚の金属板８
が該導波管１の管軸に平行する向きで且つ該導波
管１の基本波TEモードの主電界に直交する隔壁
として配設され、前記金属板８の両側の前記導波
管１内には第１の基本波TEモード伝送路９と該
伝送路９を伝搬する基本波TEモードと互に逆相
の関係になる基本波TEモードを伝搬させる第２
の基本波TEモード伝送路１０が形成され、前記
導波管１には前記金属板８を前記両基本波TEモ
ードに対して共用の同極性の一方の電極とし、前
記金属板８に対向する各々の電界垂直導体面を前
記両基本波TEモードの他方の極性の電極とする
入出力部２０，２１が前記導波管１の長手方向に
間隔をあけてそれぞれ設けられ、前記両入出力部
２０，２１間の前記金属板８には帯域阻止波に対
して共振する結合孔１１があけられていることを
特徴とする。
The structure of the present invention for achieving the above object will be explained with reference to FIG. 1 corresponding to an embodiment.
are arranged as partition walls in a direction parallel to the tube axis of the waveguide 1 and perpendicular to the main electric field of the fundamental TE mode of the waveguide 1, and inside the waveguide 1 on both sides of the metal plate 8. The first fundamental TE mode transmission line 9 and the second fundamental TE mode that propagates the fundamental TE mode which is in a mutually opposite phase relationship with the fundamental TE mode propagating through the transmission line 9.
A fundamental wave TE mode transmission line 10 is formed in the waveguide 1, and the metal plate 8 is used as one electrode of the same polarity that is shared by both the fundamental wave TE modes, and the metal plate 8 is opposed to the metal plate 8. Input/output sections 20 and 21 are provided at intervals in the longitudinal direction of the waveguide 1, each using the electric field vertical conductor surface as an electrode of the other polarity of the two fundamental wave TE modes. It is characterized in that the metal plate 8 between 20 and 21 is provided with a coupling hole 11 that resonates with band-stop waves.
このような導波管形帯域阻止波器の第１の基
本波TEモード伝送路９と第２の基本波TEモード
伝送路１０に、正相及び逆相の互いに逆位相の基
本波TEモードを伝搬させると、結合孔１１に共
振する相互に逆相の波はそれぞれの主電界が結合
孔１１面に平行の同相ハイブリツト波となるの
で、不要波が共振すると該不要波は入力側に反射
して出力端側に伝搬しない。また、伝搬させたい
非共振の相互に逆相の信号波は、結合孔１１に影
響されずに伝搬する。しかも、金属板８を導波管
１内に使用するだけで、フイン ライン（FIN
LINE）のキヤビテイを導波管１内に構成できる
ので、軽量化が図れる。
The first fundamental TE mode transmission line 9 and the second fundamental TE mode transmission line 10 of such a waveguide type band-stop waveform are provided with fundamental wave TE modes having mutually opposite phases, ie, positive phase and negative phase. When propagated, the mutually opposite phase waves resonating in the coupling hole 11 become in-phase hybrid waves whose main electric fields are parallel to the surface of the coupling hole 11, so when the unnecessary waves resonate, the unnecessary waves are reflected to the input side. does not propagate to the output end. Furthermore, non-resonant signal waves having opposite phases to each other that are desired to propagate propagate without being affected by the coupling hole 11. Furthermore, by simply using the metal plate 8 inside the waveguide 1, FIN line (FIN)
Since the cavity of LINE) can be configured within the waveguide 1, weight reduction can be achieved.
以下、本発明の実施例を第１図を参照して詳細
に説明する。本実施例の導波管形帯域阻止波器
は、矩形導波管１内の狭面の幅方向の中央の位置
に該矩形導波管１の広面に対して平行な向き（管
軸に平行で、且つ基本波TEモードの主電界に直
交する向き）で金属板８が配設され、該金属板８
はその幅方向の両端が矩形導波管１の狭面に固定
されている。導波管１内には、この金属板８によ
つて仕切られて或る相の基本波TEモードを伝搬
させる第１の基本波TEモード伝送路９と該伝送
路９を伝搬させる基本波TEモードと互に逆相の
関係になり且つ電界の大きさが略等しい基本波
TEモード伝送路を伝搬させる第２の基本波TEモ
ード伝送路１０とが形成されている。金属板８の
長手方向の両端には、マジツクＥ部１２，１３が
それぞれ設けられている。各マジツクＥ部１２，
１３は、金属板８の長さ方向の両端寄りの位置
に、幅方向に切り込んだスリツト１４，１５を介
し突片部１６，１７が形成された構造になつてい
る。各マジツクＥ部１２，１３に対応して矩形導
波管１の狭面には貫通孔１８，１９がそれぞれ設
けられ、これら貫通孔１８，１９に一方の入出力
部としての入力側同軸部２０と他方の入出力部と
しての出力側同軸部２１が設けられ、これら入力
側同軸部２０と出力側同軸部２１の各中心導体２
０Ａ，２１ＡがマジツクＥ部１２，１３の突片部
１６，１７に接続され、且つこれら入力側同軸部
２０と出力側同軸部２１の各外部導体が導波管１
に接続されている。このようなマジツクＥ部１
２，１３は、同軸伝送系と導波管伝送系とに相互
に変換する機能と、金属板８で仕切つて形成され
た第１の基本波TEモード伝送路９と第２の基本
波TEモード伝送路１０にそれぞれ互に逆相の基
本波TEモードを送受信する機能とを有する。入
力側同軸部２０と出力側同軸部２１との間の金属
板８の長手方向の途中の部分には、幅方向に沿つ
て長孔よりなる結合孔１１が約3λR／４（ただし、
λRは不要周波数fRの波長であり、管内の誘電体に
より影響を受ける。本実施例では、管内の誘電体
は空気である。）の間隔で複数段（実施例では、
２段）で設けられている。各結合孔１１の長さ
は、通過を阻止したい不要周波数fRのλRの約１／
２の整数倍（実施例では、整数１）に定められて
いる。
Hereinafter, embodiments of the present invention will be described in detail with reference to FIG. The waveguide-type band-stop waveguide of this embodiment has a rectangular waveguide 1 at a position parallel to the wide surface of the rectangular waveguide 1 (parallel to the tube axis) at the center position in the width direction of the narrow surface of the rectangular waveguide 1. and a direction perpendicular to the main electric field of the fundamental wave TE mode), and the metal plate 8
is fixed to the narrow surface of the rectangular waveguide 1 at both ends in the width direction. Inside the waveguide 1, there is a first fundamental wave TE mode transmission line 9 which is partitioned by this metal plate 8 and which propagates the fundamental wave TE mode of a certain phase, and a fundamental wave TE which propagates through the transmission line 9. Fundamental wave that has an opposite phase relationship with the mode and has approximately the same electric field size
A second fundamental wave TE mode transmission line 10 for propagating the TE mode transmission line is formed. Magic E portions 12 and 13 are provided at both longitudinal ends of the metal plate 8, respectively. Each magick E part 12,
13 has a structure in which projecting pieces 16 and 17 are formed at positions near both ends of the metal plate 8 in the length direction through slits 14 and 15 cut in the width direction. Through holes 18 and 19 are provided in the narrow surface of the rectangular waveguide 1 corresponding to the magic E sections 12 and 13, respectively, and an input side coaxial section 20 serving as one input/output section is provided in these through holes 18 and 19. and an output side coaxial section 21 as the other input/output section, and each center conductor 2 of these input side coaxial section 20 and output side coaxial section 21 is provided.
0A and 21A are connected to the projecting pieces 16 and 17 of the magic E sections 12 and 13, and the outer conductors of the input side coaxial section 20 and the output side coaxial section 21 are connected to the waveguide 1.
It is connected to the. Magic E part 1 like this
2 and 13 have a function of mutually converting between a coaxial transmission system and a waveguide transmission system, and a first fundamental wave TE mode transmission line 9 and a second fundamental wave TE mode formed by partitioning with a metal plate 8. Each transmission line 10 has a function of transmitting and receiving fundamental wave TE modes having mutually opposite phases. In the middle of the longitudinal direction of the metal plate 8 between the input side coaxial part 20 and the output side coaxial part 21, there is a coupling hole 11 formed of a long hole along the width direction of about 3λ R /4 (however,
λ R is the wavelength of the unnecessary frequency f R and is affected by the dielectric inside the tube. In this example, the dielectric inside the tube is air. ) at intervals of multiple stages (in the example,
It is set up in 2 stages). The length of each coupling hole 11 is approximately 1/of λ R of the unnecessary frequency f R whose passage is to be prevented.
It is determined to be an integer multiple of 2 (in the embodiment, an integer 1).
このような導波管形帯域阻止波器において
は、入力側同軸部２０と出力側同軸部２１の各中
心導体２０Ａ，２１ＡがマジツクＥ部１２，１３
の突片部１６，１７に接続され、且つこれら入力
側同軸部２０と出力側同軸部２１の各外部導体が
導波管１に接続されているので、金属板８が第
１、第２の基本波TEモード伝送路９，１０に伝
送される互いに逆相の両基本波TEモードに対し
て共用の同極性の一方の電極として作用し、該金
属板８に対向する各々の電界垂直導体面である導
波管１の各広面が第１、第２の基本波TEモード
の他方の極性の電極として作用する。このため、
入力側同軸部２０にTEモードの通過させたい周
波数fpと不要周波数fR（fP＜fR）が印加された場合
には、両波共にマジツクＥ部１２で互に逆相で電
界の大きさが略等しに２つの基本波TEモードに
変換され、これら２つの互に逆相の波が第１の基
本波TEモード伝送路９と第２の基本波TEモード
伝送路１０とに励磁される。この場合、結合孔１
１の長さを、不要周波数fRの波長λRを約１／２に
共振する長さにしておくと、不要周波数fRの互い
に逆相の波は結合孔１１同相となつて共振し、電
源側に反射し、通過を阻止される。それに対し、
通過させたい周波数fpの波は結合孔１１には殆ど
影響されずに正相と逆相の関係を維持したまま、
出力側のマジツクＥ部１３に到達し、TEモード
に変換されて出力側同軸部２１に出力される。 In such a waveguide type band-stop wave device, each center conductor 20A, 21A of the input side coaxial section 20 and the output side coaxial section 21 is connected to the magic E section 12, 13.
Since the outer conductors of the input coaxial section 20 and the output coaxial section 21 are connected to the waveguide 1, the metal plate 8 is connected to the first and second coaxial sections. Each electric field vertical conductor surface facing the metal plate 8 acts as one common electrode of the same polarity for both fundamental wave TE modes having opposite phases transmitted to the fundamental wave TE mode transmission lines 9 and 10. Each wide surface of the waveguide 1 acts as an electrode of the other polarity of the first and second fundamental TE modes. For this reason,
When a frequency f p to be passed in TE mode and an unnecessary frequency f R (f P < f R ) are applied to the input side coaxial section 20, both waves are generated in the magic E section 12 in opposite phases to each other in the electric field. The magnitudes are converted into two fundamental wave TE modes having approximately the same magnitude, and these two mutually opposite phase waves are transmitted to the first fundamental wave TE mode transmission line 9 and the second fundamental wave TE mode transmission line 10. Excited. In this case, coupling hole 1
If the length of 1 is set to a length that resonates approximately 1/2 of the wavelength λ R of the unnecessary frequency f R , the waves of the unnecessary frequency f R that are out of phase with each other become in phase with the coupling hole 11 and resonate, It is reflected back to the power supply side and is blocked from passing through. For it,
The wave of the frequency f p to be passed is almost unaffected by the coupling hole 11 and maintains the relationship of positive phase and negative phase.
The signal reaches the magic E section 13 on the output side, is converted to TE mode, and is output to the coaxial section 21 on the output side.
なお、結合孔１１の負荷Ｑは該結合孔１１のス
ロツト幅及び該結合孔１１の長軸と管軸との角度
によつて変えることができると共に、金属板８の
板厚によつても変わる。 Note that the load Q on the coupling hole 11 can be changed depending on the slot width of the coupling hole 11 and the angle between the long axis of the coupling hole 11 and the tube axis, and also on the thickness of the metal plate 8. .
また、金属板８は同様にして複数板、導波管１
の狭面の高さ方向に位置をずらして設けることも
できる。 In addition, the metal plate 8 is made of a plurality of plates, and the waveguide 1
It is also possible to shift the position in the height direction of the narrow surface.
かつまた、入力部及び出力部は、導波管１に対
応して内部が仕切られて複数の伝送路が形成され
た導波管で形成することもできる。この場合、導
波管からなる入力部及び出力部は、金属板８の両
側の基本波TEモード伝送路を伝搬する互いに逆
相の両基本波TEモードに共用の同極性の一方の
電極として金属板８が作用し、これら互いに逆相
の両基本波TEモードの他方の極性の電極として
該金属板８に対向する各々の電界垂直面（導波管
１の各広面）が作用するようにする。このように
導波管からなる入力部と出力部の場合には、第１
図の同軸の入力部と出力部の場合に必要となるマ
ジツクＥ部が不要になる。 Furthermore, the input section and the output section can also be formed by a waveguide whose interior is partitioned to form a plurality of transmission paths corresponding to the waveguide 1. In this case, the input part and the output part made of a waveguide are made of metal as one electrode of the same polarity that is shared by both fundamental wave TE modes having mutually opposite phases propagating through the fundamental wave TE mode transmission path on both sides of the metal plate 8. The plate 8 acts so that each electric field vertical surface (each wide surface of the waveguide 1) facing the metal plate 8 acts as the other polarity electrode of both fundamental wave TE modes having mutually opposite phases. . In this way, in the case of the input section and output section consisting of waveguides, the first
The magic E section required in the case of the coaxial input section and output section shown in the figure becomes unnecessary.
更に、本発明は導波管１がダブルリツジ導波管
及び円形導波管である場合にも同様に適用できる
ものである。 Furthermore, the present invention can be similarly applied to cases where the waveguide 1 is a double-ridge waveguide or a circular waveguide.
以上説明したように本発明に係る導波管形帯域
阻止波器は、結合孔を有する少なくとも１枚の
金属板を導波管内に配設して該導波管内で結合孔
を利用して不要波の阻止を図るようにしたので、
従来のように導波管の外にキヤビテイが突出する
ようなことがなくなつて、小形軽量となり、コス
トの低減を図ることができる。また、阻止帯域幅
は結合孔の寸法形状を変えることにより変更でき
る利点がある。
As explained above, the waveguide-type band-stop wave device according to the present invention disposes at least one metal plate having a coupling hole in the waveguide, and utilizes the coupling hole in the waveguide to eliminate unnecessary I tried to block the waves, so
Unlike in the past, the cavity does not protrude outside the waveguide, making it possible to reduce the size and weight and reduce costs. Further, there is an advantage that the rejection band width can be changed by changing the size and shape of the coupling hole.
第１図は本発明に係る導波管形帯域阻止波器
の一実施例を示す一部破断斜視図、第２図及び第
３図は何れも従来の導波管形帯域阻止波器の斜
視図である。
１…導波管、８…金属板、９…第１の基本波
TEモード伝送路、１０…第２の基本波TEモード
伝送路、１１…結合孔、２０…入力側同軸部（入
出力部）、２１…出力側同軸部（入出力部）。
FIG. 1 is a partially cutaway perspective view showing an embodiment of a waveguide type band-stop wave device according to the present invention, and FIGS. 2 and 3 are perspective views of a conventional waveguide type band-stop wave device. It is a diagram. 1... Waveguide, 8... Metal plate, 9... First fundamental wave
TE mode transmission line, 10... Second fundamental wave TE mode transmission line, 11... Coupling hole, 20... Input side coaxial section (input/output section), 21... Output side coaxial section (input/output section).
Claims (1)
管の管軸に平行する向きで且つ該導波管の基本波
TEモードの主電界に直交する隔壁として配設さ
れ、前記金属板の両側の前記導波管内には第１の
基本波TEモード伝送路と該伝送路を伝搬する基
本波TEモードと互に逆相の関係になる基本波TE
モードを伝搬させる第２の基本波TEモード伝送
路が形成され、前記導波管には前記金属板を前記
両基本波TEモードに対して共用の同極性の一方
の電極とし、前記金属板に対向する各々の電界垂
直導体面を前記両基本波TEモードの他方の極性
の電極とする入出力部が前記導波管の長手方向に
間隔をあけてそれぞれ設けられ、前記両入出力部
間の前記金属板には帯域阻止波に対して共振する
結合孔があけられていることを特徴とする導波管
形帯域阻止波器。1 At least one metal plate in the waveguide is oriented parallel to the tube axis of the waveguide and the fundamental wave of the waveguide is
A first fundamental wave TE mode transmission line is provided in the waveguide on both sides of the metal plate, and a fundamental wave TE mode propagating through the transmission line is arranged as a partition wall orthogonal to the main electric field of the TE mode. Fundamental wave TE that has a phase relationship
A second fundamental wave TE mode transmission line for propagating the mode is formed, and the metal plate is used as one electrode of the same polarity shared by both the fundamental wave TE modes in the waveguide, and Input/output sections are provided at intervals in the longitudinal direction of the waveguide, with each of the opposing electric field vertical conductor surfaces serving as electrodes of the other polarity of the two fundamental wave TE modes, and between the two input/output sections. A waveguide type band-stop wave device, characterized in that the metal plate has a coupling hole that resonates with the band-stop wave.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19402586A JPS6351702A (en) | 1986-08-21 | 1986-08-21 | Waveguide type band area blocking filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19402586A JPS6351702A (en) | 1986-08-21 | 1986-08-21 | Waveguide type band area blocking filter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6351702A JPS6351702A (en) | 1988-03-04 |
| JPH0575201B2 true JPH0575201B2 (en) | 1993-10-20 |
Family
ID=16317691
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19402586A Granted JPS6351702A (en) | 1986-08-21 | 1986-08-21 | Waveguide type band area blocking filter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6351702A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011024193A (en) * | 2009-06-16 | 2011-02-03 | Mitsubishi Electric Corp | Band-rejection filter |
| WO2015052904A1 (en) | 2013-10-07 | 2015-04-16 | 日本電気株式会社 | Coaxial waveguide converter and transmitting/receiving integrated splitter |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2812974B1 (en) * | 2000-08-10 | 2003-01-31 | Cit Alcatel | DEVICE FOR THE TRANSMISSION OF ELECTROMAGNETIC SIGNALS THROUGH A STRUCTURE COMPRISING MODULES ORGANIZED TO OBTAIN REDUNDANCY IN TWO FOR ONE |
| FR2850793A1 (en) * | 2003-01-31 | 2004-08-06 | Thomson Licensing Sa | TRANSITION BETWEEN A MICRO-TAPE CIRCUIT AND A WAVEGUIDE AND OUTDOOR TRANSCEIVING UNIT INCORPORATING THE TRANSITION |
-
1986
- 1986-08-21 JP JP19402586A patent/JPS6351702A/en active Granted
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011024193A (en) * | 2009-06-16 | 2011-02-03 | Mitsubishi Electric Corp | Band-rejection filter |
| WO2015052904A1 (en) | 2013-10-07 | 2015-04-16 | 日本電気株式会社 | Coaxial waveguide converter and transmitting/receiving integrated splitter |
| US9831539B2 (en) | 2013-10-07 | 2017-11-28 | Nec Corporation | Waveguide coaxial conversion device and transmission/reception integrated splitter |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6351702A (en) | 1988-03-04 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |