JPS625528B2 - - Google Patents
Info
- Publication number
- JPS625528B2 JPS625528B2 JP2721281A JP2721281A JPS625528B2 JP S625528 B2 JPS625528 B2 JP S625528B2 JP 2721281 A JP2721281 A JP 2721281A JP 2721281 A JP2721281 A JP 2721281A JP S625528 B2 JPS625528 B2 JP S625528B2
- Authority
- JP
- Japan
- Prior art keywords
- rectangular waveguide
- waveguide
- slot
- resonant
- band
- 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
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/20—Frequency-selective devices, e.g. filters
- H01P1/207—Hollow waveguide filters
Landscapes
- Control Of Motors That Do Not Use Commutators (AREA)
Description
【発明の詳細な説明】
この発明は製造が容易な帯域阻止フイルタに関
するものである。第１図は従来の帯域阻止フイル
タの構成図を示したもので、図中１は矩形導波
管、２は共振スロツト、３は空胴共振器である。
ここで、共振スロツト２は矩形導波管１の中央で
かつ管軸と垂直に設けられている。第２図は従来
の帯域阻止フイルタの等価回路図を示したもの
で、図中、１０は矩形導波管１と等価な伝送線
路、５ａは共振スロツト２で生じるインダクタン
ス、４ａは共振スロツト２で生じるキヤパシタン
ス、５ｂは空胴共振器３で生じるインダクタン
ス、４ｂは空胴共振器３で生じるキヤパシタン
ス、６は矩形導波管１と空胴共振器３との間の結
合を意味するトランスである。又、矩形導波管１
はTE10モードのみが伝播可能とする。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a band rejection filter that is easy to manufacture. FIG. 1 shows a configuration diagram of a conventional band rejection filter, in which 1 is a rectangular waveguide, 2 is a resonant slot, and 3 is a cavity resonator.
Here, the resonant slot 2 is provided at the center of the rectangular waveguide 1 and perpendicular to the tube axis. Figure 2 shows an equivalent circuit diagram of a conventional band rejection filter. In the figure, 10 is a transmission line equivalent to the rectangular waveguide 1, 5a is the inductance generated at the resonant slot 2, and 4a is the inductance generated at the resonant slot 2. The generated capacitance, 5b is the inductance generated in the cavity resonator 3, 4b is the capacitance generated in the cavity resonator 3, and 6 is a transformer meaning the coupling between the rectangular waveguide 1 and the cavity resonator 3. Also, rectangular waveguide 1
allows only TE 10 mode to be propagated.
この従来の帯域阻止フイルタについて以下簡単
に説明する。矩形導波管１を伝送する電波は共振
スロツト２を介して空胴共振器３に結合するが、
この時、空胴共振器３を並列共振状態とすれば、
矩形導波管１を伝送線路１０として観た場合、矩
形導波管１の共振スロツト２部の位置にインダク
タンス５ａとキヤパシタンス４ａによる並列共振
回路とインダクタンス５ｂとキヤパシタンス４ｂ
による並列共振回路との並列回路が直列に入つた
状態と等価と成る。 This conventional band rejection filter will be briefly explained below. The radio wave transmitted through the rectangular waveguide 1 is coupled to the cavity resonator 3 via the resonance slot 2.
At this time, if the cavity resonator 3 is brought into a parallel resonance state,
When the rectangular waveguide 1 is viewed as a transmission line 10, a parallel resonant circuit consisting of an inductance 5a and a capacitance 4a, and an inductance 5b and a capacitance 4b are formed at the position of the second resonance slot of the rectangular waveguide 1.
This is equivalent to a parallel circuit connected in series with a parallel resonant circuit.
なお、この場合は説明の都合上、トランスの変
成比は１対１としている。 In this case, for convenience of explanation, the transformation ratio of the transformer is assumed to be 1:1.
以上の動作により矩形導波管１を伝送する電波
は共振スロツト２の位置で、共振スロツト２と空
胴共振器３で形成された並列共振回路により、し
や断され帯域阻止フイルタを実現していた。しか
し、この従来の帯域阻止フイルタでは空胴共振器
３の寸法により特性が変化するため、一般の導波
管部品に比較して厳しい加工精度が要求されてい
た。現実には図示していないが、加工精度を補正
するため空胴共振器３等に付加したネジ等を調整
して共振周波数を所要に設定しており帯域阻止フ
イルタの製造に多大の労力を要していた。 Through the above operation, the radio waves transmitted through the rectangular waveguide 1 are cut off at the position of the resonant slot 2 by the parallel resonant circuit formed by the resonant slot 2 and the cavity resonator 3, thereby realizing a band rejection filter. Ta. However, since the characteristics of this conventional band-elimination filter vary depending on the dimensions of the cavity resonator 3, stricter processing precision was required compared to general waveguide components. Although it is not actually shown in the diagram, in order to correct the processing accuracy, the resonant frequency is set as required by adjusting the screws etc. added to the cavity resonator 3, etc., which requires a great deal of labor to manufacture the band rejection filter. Was.
この発明による帯域阻止フイルタは前述の欠点
を除去したもので、その特徴は製造の簡略化にあ
る。 The band-stop filter according to the invention eliminates the above-mentioned drawbacks and is characterized by simplified manufacturing.
第３図はこの発明による帯域阻止フイルタの実
施例の構成図を示したもので、図中１は矩形導波
管、２は共振スロツト、７は副導波管である。こ
こで、副導波管７は矩形導波管１と同じものでな
くても良くTE10モードのみが伝播可能な導波管
であれば良い。また、副導波管４と矩形導波管１
は導波管のＨ面相互で対向かつ直交させ、併せて
共振スロツトを直交部の中央にかつ矩形導波管１
に対して管軸と垂直、（副導波管７に対して管軸
と平行）に設けている。第４図はこの発明による
帯域阻止フイルタの実施例の等価回路図を示した
もので、図中、１０は矩形導波管１と等価な伝送
線路、５ａは共振スロツト２で生じるインダクタ
ンス、４ａは共振スロツト２で生じるキヤパシタ
ンス、８は共振スロツト２から副導波管７を観た
負荷、６は矩形導波管１と副導波管７との間の結
合を意味するトランスである。 FIG. 3 shows a block diagram of an embodiment of a band rejection filter according to the present invention, in which 1 is a rectangular waveguide, 2 is a resonant slot, and 7 is a sub-waveguide. Here, the sub-waveguide 7 does not have to be the same as the rectangular waveguide 1, as long as it is a waveguide that can propagate only the TE 10 mode. In addition, the sub waveguide 4 and the rectangular waveguide 1
are arranged so that the H planes of the waveguides face each other and are orthogonal to each other, and the resonant slot is placed in the center of the orthogonal part, and the rectangular waveguide 1
(parallel to the sub-waveguide 7 with respect to the tube axis). FIG. 4 shows an equivalent circuit diagram of an embodiment of a band rejection filter according to the present invention. In the figure, 10 is a transmission line equivalent to the rectangular waveguide 1, 5a is an inductance generated in the resonance slot 2, and 4a is an inductance generated in the resonant slot 2. A capacitance generated in the resonant slot 2, 8 a load viewed from the resonant slot 2 to the sub-waveguide 7, and 6 a transformer meaning the coupling between the rectangular waveguide 1 and the sub-waveguide 7.
以下、この発明による帯域フイルタについて詳
細に説明する。まず、共振スロツト２から副導波
管７を見た負荷８のインピーダンスについて考え
てみると、共振スロツト２が副導波管７の中央で
かつ管軸と平行に設けられているためTE10モー
ドの結合はなされず、この場合、負荷８のインピ
ーダンスは無限大と成る。 The bandpass filter according to the present invention will be explained in detail below. First, if we consider the impedance of the load 8 when looking at the sub-waveguide 7 from the resonance slot 2, we will see that since the resonance slot 2 is provided at the center of the sub-waveguide 7 and parallel to the tube axis, the TE 10 mode is not coupled, and in this case, the impedance of the load 8 becomes infinite.
一方、矩形導波管１を伝送する電波は共振スロ
ツト２を介して副導波管７に結合しようとするが
上記理由により結合はなされず、矩形導波管１を
伝送線路１０として見た場合、矩形導波管１の共
振スロツト２部の位置に共振スロツト２で生じる
インダクタンス５ａとキヤパシタンス４ａによる
並列共振回路が直列に入つた状態と等価と成る。 On the other hand, the radio waves transmitted through the rectangular waveguide 1 try to couple to the sub-waveguide 7 via the resonant slot 2, but the coupling is not achieved for the above-mentioned reasons.If the rectangular waveguide 1 is viewed as a transmission line 10, This is equivalent to a state in which a parallel resonant circuit consisting of an inductance 5a and a capacitance 4a generated in the resonant slot 2 is connected in series at the position of the resonant slot 2 of the rectangular waveguide 1.
なお、この場合は説明の都合上、トランス６の
変成比は１対１にしている。 In this case, for convenience of explanation, the transformation ratio of the transformer 6 is set to 1:1.
この動作により矩形導波管１を伝送する電波は
共振スロツト２の位置で、ほぼ共振スロツト２の
みで形成された並列共振回路により、しや断され
帯域阻止フイルタを実現している。 By this operation, the radio wave transmitted through the rectangular waveguide 1 is cut off at the position of the resonant slot 2 by a parallel resonant circuit formed almost only by the resonant slot 2, thereby realizing a band rejection filter.
この発明による帯域阻止フイルタは２本の
TE10モードのみを伝送させる矩形導波管と１個
の共振スロツトで構成されているが、副導波管７
は高次モードが発生しない寸法であればいくらで
も良く、また、管軸長も限定された寸法に選定す
る必要もないため、製造の簡略化が実現出来る。 The band rejection filter according to this invention has two
It consists of a rectangular waveguide that transmits only the TE 10 mode and one resonant slot, but the sub-waveguide 7
can be any size as long as higher-order modes do not occur, and there is no need to select a tube axis length to a limited size, so manufacturing can be simplified.
また、この発明による帯域阻止フイルタは従来
の帯域阻止フイルタに比較して阻止帯域は若干広
く、通信用のフイルタとしては適しているとは云
えないが、防害波阻止には十分使える性能であ
る。 In addition, the band rejection filter according to the present invention has a slightly wider rejection band than conventional band rejection filters, and although it cannot be said to be suitable as a communication filter, it has sufficient performance for blocking harmful waves. .
なお、以上は帯域阻止フイルタについて説明し
たが、この発明はこれに限らず、帯域阻止フイル
タを何段か縦続した帯域通過フイルタにも使用可
能である。 Although the above description has been made regarding a band-elimination filter, the present invention is not limited to this, and can also be used in a band-pass filter in which several stages of band-elimination filters are connected in series.
第１図は従来の帯域阻止フイルタを示す構成
図、第２図は従来の帯域阻止フイルタの等価回路
図、第３図はこの発明による帯域阻止フイルタの
実施例を示す構成図、第４図はこの発明による帯
域阻止フイルタの実施例の等価回路図である。
図中、１は矩形導波管、２は共振スロツト、３
は空胴共振器、５ａ，５ｂはインダクタンス、４
ａ，４ｂはキヤパシタンス、６はトランス、７は
副導波管、８は負荷、１０は伝送線路である。な
お、図中、同一あるいは相当部分には同一符号を
付して示してある。
FIG. 1 is a block diagram showing a conventional band-stop filter, FIG. 2 is an equivalent circuit diagram of a conventional band-stop filter, FIG. 3 is a block diagram showing an embodiment of a band-stop filter according to the present invention, and FIG. FIG. 2 is an equivalent circuit diagram of an embodiment of a band rejection filter according to the present invention. In the figure, 1 is a rectangular waveguide, 2 is a resonant slot, and 3 is a rectangular waveguide.
is a cavity resonator, 5a and 5b are inductances, 4
a and 4b are capacitances, 6 is a transformer, 7 is a sub waveguide, 8 is a load, and 10 is a transmission line. In the drawings, the same or corresponding parts are denoted by the same reference numerals.
Claims (1)
本をＨ面相互で対向かつ直交させると共に、直交
部の中央でかつ電波を伝送する矩形導波管に対し
て管軸と垂直に共振スロツトを設けたことを特徴
とする帯域阻止フイルタ。1 Rectangular waveguide in which only TE 10 mode can propagate 2
A band rejection filter characterized in that the H-planes of the waveguides are opposed and orthogonal to each other, and a resonance slot is provided in the center of the orthogonal portion and perpendicular to the tube axis of a rectangular waveguide for transmitting radio waves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2721281A JPS57141101A (en) | 1981-02-26 | 1981-02-26 | Band-stopping filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2721281A JPS57141101A (en) | 1981-02-26 | 1981-02-26 | Band-stopping filter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57141101A JPS57141101A (en) | 1982-09-01 |
| JPS625528B2 true JPS625528B2 (en) | 1987-02-05 |
Family
ID=12214792
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2721281A Granted JPS57141101A (en) | 1981-02-26 | 1981-02-26 | Band-stopping filter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57141101A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4812790A (en) * | 1988-02-16 | 1989-03-14 | Hughes Aircraft Company | Toothed coupling iris |
| JP7255143B2 (en) | 2018-11-07 | 2023-04-11 | 富士通株式会社 | Group delay compensation filter |
-
1981
- 1981-02-26 JP JP2721281A patent/JPS57141101A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57141101A (en) | 1982-09-01 |
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