JPH06188607A - Notch filter and notch diplexer comprising notch filter - Google Patents
Notch filter and notch diplexer comprising notch filterInfo
- Publication number
- JPH06188607A JPH06188607A JP35569892A JP35569892A JPH06188607A JP H06188607 A JPH06188607 A JP H06188607A JP 35569892 A JP35569892 A JP 35569892A JP 35569892 A JP35569892 A JP 35569892A JP H06188607 A JPH06188607 A JP H06188607A
- Authority
- JP
- Japan
- Prior art keywords
- shield case
- notch
- forming part
- resonance
- resonator
- 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.)
- Granted
Links
Landscapes
- Control Of Motors That Do Not Use Commutators (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】カラ−テレビジョン放送装置にお
いては、定インピ−ダンスノッチダイプレクサ（以下、
CINダイプレクサと略記する）を用いてスプリアスを吸
収除去すると共に、映像搬送波及び映像カラ−副搬送波
と音声搬送波との合成を行っているが、本発明は、この
ような不要波の吸収除去及び所要波の合成を行う CINダ
イプレクサの構成素子等に好適なノッチフィルタ及びこ
のノッチフィルタを用いて成るノッチダイプレクサに関
するものである。BACKGROUND OF THE INVENTION In a color television broadcasting apparatus, a constant impedance notch diplexer (hereinafter,
The CIN diplexer is abbreviated) to absorb and remove spurious and synthesize the video carrier, the video color subcarrier, and the audio carrier. The present invention relates to a notch filter suitable for components of a CIN diplexer that synthesizes waves and a notch diplexer using the notch filter.
【０００２】[0002]
【従来の技術】図１０は、超短波(VHF) 帯における放送
装置等の大電力用 CINダイプレクサの構成素子として従
来用いられている半同軸共振器より成るノッチフィルタ
の要部を示す断面図で、12は外部導体、13は半同軸共振
素子、14は入出力結合ル−プ、15は外部回路との結合用
同軸線路、16は立ち上り又は立ち下がり特性補償用のス
タブである。図１１は、極超短波(UHF) 帯における放送
装置等の大電力用 CINダイプレクサの構成素子として従
来用いられている矩形導波管型共振器より成るノッチフ
ィルタの要部を示す断面図で、17は導波管壁で、他の符
号は図１０と同様である。2. Description of the Related Art FIG. 10 is a cross-sectional view showing a main part of a notch filter composed of a semi-coaxial resonator, which is conventionally used as a constituent element of a CIN diplexer for high power such as broadcasting equipment in a very high frequency (VHF) band. Reference numeral 12 is an outer conductor, 13 is a semi-coaxial resonance element, 14 is an input / output coupling loop, 15 is a coaxial line for coupling with an external circuit, and 16 is a stub for compensating rising or falling characteristics. FIG. 11 is a cross-sectional view showing the main part of a notch filter composed of a rectangular waveguide resonator that has been conventionally used as a constituent element of a CIN diplexer for high power such as broadcasting equipment in the ultra high frequency (UHF) band. Is a waveguide wall, and other reference numerals are the same as in FIG.
【０００３】[0003]
【発明が解決しようとする課題】図１０及び図１１に示
した従来のノッチフィルタは、何れも外部回路との結合
用同軸線路15が外部導体12（図１０）又は導波管壁17
（図１１）の外部に設けられると共に、立ち上り又は立
ち下がり特性補償用のスタブ16もまた外部導体12又は導
波管壁17の外部に設けられ、かつ、同軸線路15に対して
直角方向に突出するように設けられているため、形状が
複雑大型となる。又、これらのノッチフィルタを用いて
CINダイプレクサを構成する場合には、２個のノッチフ
ィルタを縱続接続したものを２組、合計４個のノッチフ
ィルタを、２個のハイブリッド結合回路の各分配出力端
子間に挿入接続しているため、全体の構成が極めて複雑
大型となる。In both of the conventional notch filters shown in FIGS. 10 and 11, the coaxial line 15 for coupling with an external circuit has an external conductor 12 (FIG. 10) or a waveguide wall 17.
(FIG. 11), a stub 16 for compensating the rising or falling characteristics is also provided outside the outer conductor 12 or the waveguide wall 17, and projects in a direction perpendicular to the coaxial line 15. Since it is provided in such a manner, the shape becomes complicated and large. Also, using these notch filters
When constructing a CIN diplexer, two sets of two notch filters are connected in series, and a total of four notch filters are inserted and connected between the distribution output terminals of the two hybrid coupling circuits. Therefore, the overall configuration becomes extremely complicated and large.
【０００４】[0004]
【課題を解決するための手段】本発明は、共通のシ−ル
ドケ−ス内を導体より成る隔壁によって分割して成る２
個のシ−ルドケ−スと、分割形成された２個のシ−ルド
ケ−スの各下壁に各一端を固定した金属板を折り曲げ又
はわん曲させて成るインダクタンス形成部及び各インダ
クタンス形成部の他端及びこの他端と対向するシ−ルド
ケ−スの下壁との間における容量形成部より成るリング
共振素子と、隔壁を貫いて、分割形成された２個のシ−
ルドケ−スに内装され、軸方向が各リング共振素子の共
振長方向と直交する共通の入出力結合線路とを備えたノ
ッチフィルタ及びこのノッチフィルタを用いて成るノッ
チダイプレクサを実現することによって従来の欠点を除
こうとするものである。According to the present invention, a common shield case is divided by a partition wall made of a conductor.
One shield case and two inductance shield parts are formed by bending or bending a metal plate having one end fixed to each lower wall of the two shield cases. A ring resonant element including a capacitance forming portion between the other end and a lower wall of the shield case facing the other end, and two shields divided and formed through the partition wall.
By implementing a notch filter equipped with a common input / output coupling line in which the axial direction is orthogonal to the resonance length direction of each ring resonant element and a notch diplexer formed by using this notch filter, the conventional notch filter is realized. It aims to eliminate the drawbacks.
【０００５】[0005]
【実施例】図１（ａ）は、本発明の一実施例を示す断面
図［図１（ｂ）のＣ−Ｃ断面図］、図１（ｂ）は、図１
（ａ）のＡ−Ａ断面図、図１（ｃ）は、図１（ａ）のＢ
−Ｂ断面図で、１は共通のシ−ルドケ−ス、２は導体よ
り成る隔壁で、共通のシ−ルドケ−ス１の内部をほぼ２
等分する。31はリング共振素子のインダクタンス形成部
で、適宜幅の導体板をほぼコの字型に折り曲げ又はＵ字
型にわん曲させ、一端を共通のシ−ルドケ−ス１の壁面
のうち、例えば下壁に固定し、他端を共通のシ−ルドケ
−ス１の下壁と平行となるように折り曲げて容量形成部
41を形成してある。51は固体誘電体で、容量形成部41と
共通のシ−ルドケ−ス１の下壁との間に介在させ、容量
形成部41と固体誘電体51との間及び固体誘電体51と共通
のシ−ルドケ−ス１の下壁との間を適当な接着剤を用い
る等の手段によって固着してある。61は可動電極板、71
はその駆動螺子、81はロックナットで、これらによって
共振周波数の微調整素子が形成される。91は入出力結合
線路で、インダクタンス形成部31と容量形成部41とで形
成されるリング共振素子の共振長方向と直交するように
設けてある。尚、リング共振素子の共振長は、インダク
タンス形成部31の折り曲げ部分を平に伸ばして平板状に
戻した場合における長手方向の長さで、共振長方向は、
この長手方向、即ち、インダクタンス形成部31のうち、
共通のシ−ルドケ−ス１の下壁と直交する部分の方向で
ある。32はリング共振素子のインダクタンス形成部、42
は容量形成部、52は固体誘電体、62は可動電極板、72は
駆動螺子、82はロックナット、92は入出力結合線路で、
これらは隔壁２の左側に設けたリング共振素子のインダ
クタンス形成部31、容量形成部41、固体誘電体51、可動
電極板61、駆動螺子71、ロックナット81及び入出力結合
線路91とほぼ同様の構成である。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1A is a sectional view showing an embodiment of the present invention [a sectional view taken along the line CC of FIG. 1B], and FIG.
1A is a cross-sectional view taken along line AA, and FIG. 1C is B in FIG. 1A.
1 is a common shield case, 2 is a partition wall made of a conductor, and the inside of the common shield case 1 is almost 2
Divide into equal parts. In 3 1 ring inductance forms part of the resonant element, is curved substantially folded into a U-shape or a U-shaped conductor plate of appropriate width, one common sheet - Rudoke - out of the wall surface of the scan 1, e.g. It is fixed to the lower wall and the other end is bent so that it is parallel to the lower wall of the common shield case 1
4 1 has been formed. 5 1 in the solid dielectric, the capacitance formation portion 4 1 and the common sheet - Rudoke - is interposed between the lower wall of the scan 1, between the capacitor forming portion 4 1 and the solid dielectric 5 1 and the solid dielectric 5 1 and the lower wall of the common shield case 1 are fixed by means such as using an appropriate adhesive. 6 1 is a movable electrode plate, 7 1
The driving screws, 8 1 locknut, fine adjustment device of the resonance frequency is formed by these. Reference numeral 9 1 denotes an input / output coupling line, which is provided so as to be orthogonal to the resonance length direction of the ring resonant element formed by the inductance forming section 3 1 and the capacitance forming section 4 1 . The resonance length of the ring resonant elements is a longitudinal length in case of returning the bent portion of the inductance formation section 3 1 earnestly stretched into a flat plate shape, the resonance length direction,
The longitudinal, that is, among the inductance formation section 3 1,
This is the direction of the portion orthogonal to the lower wall of the common shield case 1. 3 2 is the inductance forming part of the ring resonant element, 4 2
Is a capacitance forming part, 5 2 is a solid dielectric, 6 2 is a movable electrode plate, 7 2 is a drive screw, 8 2 is a lock nut, 9 2 is an input / output coupling line,
These are the inductance forming part 3 1 , the capacitance forming part 4 1 , the solid dielectric 5 1 , the movable electrode plate 6 1 , the drive screw 7 1 , the lock nut 8 1 and the input / output coupling of the ring resonance element provided on the left side of the partition wall 2. a substantially similar structure as the line 9 1.
【０００６】入出力結合線路91及び92は、隔壁２の一部
に穿った孔隙10に対応する個所において一体に結合し、
各端部を同軸接栓111 及び112 の各内部導体に接続して
ある。そして、入出力結合線路91の長さを、電気長で共
振波長［図１（ａ）における隔壁２を境にして共通のシ
−ルドケ−ス１の左半分（図面に向って）に形成される
リング共振器の共振波長］の1/2 以下に、入出力結合線
路92の長さを、電気長で共振波長［図１（ａ）における
隔壁２を境にして共通のシ−ルドケ−ス１の右半分に形
成されるリング共振器の共振波長］の1/2 以下に、それ
ぞれ選定すると共に、入出力結合線路91の直径を比較的
大に、入出力結合線路92の直径を比較的小に形成してあ
る。入出力結合線路91及び92を各別に形成して溶接等に
より両線路を一体に結合してもよいが、１本の棒状導体
の一部の直径を比較的大に、他の部分の直径を比較的小
に形成し、隔壁２の一部に穿った孔隙10を貫いて共通の
シ−ルドケ−ス１内に設けるようにしてもよい。何れの
場合にも、入出力結合線路91及び92は丸棒状又は角棒状
の導体、板状の導体又はマイクロストリップ線路等の何
れによって形成しても本発明を実施することができる。The input / output coupling lines 9 1 and 9 2 are integrally coupled at a location corresponding to a hole 10 formed in a part of the partition wall 2,
Each end is connected to each inner conductor of the coaxial connectors 11 1 and 11 2 . Then, output the length of the coupling line 9 1, a common by a partition wall 2 at the resonant wavelength electrical length [FIGS. 1 (a) the boundary sheet - form to the scan 1 of the left half (toward the drawing) - Rudoke is 1/2 or less of the resonance wavelength on the ring resonator is, the length of the input and output coupling line 9 2, the resonance wavelength in electrical length [Figure 1 common to the partition wall 2 as a boundary in the (a) sheet - Rudoke - scan to 1/2 or less of one right resonance wavelength of the ring resonator formed in half, along with selected, respectively, the relatively large diameter of the input-output coupling line 9 1, the input-output coupling line 9 2 It has a relatively small diameter. The input / output coupling lines 9 1 and 9 2 may be separately formed, and both lines may be integrally coupled by welding or the like. However, one rod-shaped conductor may have a relatively large diameter and a portion of the other may be coupled. The diameter may be formed to be comparatively small, and it may be provided in a common shield case 1 through a hole 10 formed in a part of the partition wall 2. In either case, input and output coupling line 9 1 and 9 2 can be carried round bar or square bar conductors, also the present invention formed by any of such as a plate-like conductor or microstrip line.
【０００７】尚、リング共振素子の容量形成部41（又は
42）の折り曲げ方向は、図示のように、リング共振素子
のインダクタンス形成部31（又は32）と共通のシ−ルド
ケ−ス１の下壁の一部によって囲まれる空間の外側に向
くように折り曲げる代りに、これと逆向きに折り曲げて
もよい。容量形成部41（又は42）と共通のシ−ルドケ−
ス１の下壁との間に固体誘電体51（又は52）を介在させ
る代りに、容量形成部41（又は42）と共通のシ−ルドケ
−ス１の下壁との間に、絶縁物より成る小型のスペ−サ
を適宜数介在させて容量形成部41（又は42）を共通のシ
−ルドケ−ス１の下壁に固定してもよい。リング共振素
子のインダクタンス形成部31（又は32）の他端を折り曲
げることなく、他端に電極板をＴ字型に取り付け、固体
誘電体又は絶縁スペ−サを介して共通のシ−ルドケ−ス
１の下壁に固定して容量形成部を形成してもよく、リン
グ共振素子のインダクタンス形成部31（又は32）の他端
と共通のシ−ルドケ−ス１の下壁との間に、例えば固定
容量のセラミックコンデンサ又はバタフライ型可変容量
コンデンサ等の容量素子を介在させるようにしてもよ
い。Incidentally, the capacitance forming portion 4 1 (or
The bending direction of 4 2 ) is, as shown in the figure, toward the outside of the space surrounded by a part of the lower wall of the shield case 1 common to the inductance forming part 3 1 (or 3 2 ) of the ring resonant element. Instead of folding like this, it may be folded in the opposite direction. A shield case common to the capacitance forming unit 4 1 (or 4 2 )
Instead of interposing the solid dielectric 5 1 (or 5 2 ) between the lower wall of the case 1 and the lower wall of the shield case 1 which is common to the capacitance forming portion 4 1 (or 4 2 ). , the insulator than made compact space - can be fixed to the lower wall of the scan 1 - suitably number interposed therebetween by volume forming unit 4 1 (or 4 2) common sheet - Rudoke. Without bending the other end of the inductance forming portion 3 1 (or 3 2 ) of the ring resonance element, an electrode plate is attached to the other end in a T shape, and a common shield cable is provided via a solid dielectric or an insulating spacer. -The capacitance forming part may be fixed to the lower wall of the case 1 and the lower end of the shield case 1 common to the other end of the inductance forming part 3 1 (or 3 2 ) of the ring resonant element. A capacitance element such as a fixed-capacity ceramic capacitor or a butterfly-type variable capacitance capacitor may be interposed between the two.
【０００８】図２及び図３は、本発明ノッチフィルタの
電磁界分布を示す要部断面図で、図２は、図１（ａ）に
おける隔壁２の左側の部分に対応する断面図、図３は、
図１（ｂ）に対応する断面図で、両図における符号は図
１と同様で、又、両図において矢印を付した実線は電界
を、矢印を付した破線及び丸印の中に黒点又は×を付し
た記号は磁界を、それぞれ表わす。両図から明らかなよ
うに、入出力結合線路91に関係する磁界モ−ドとリング
共振素子に関係する磁界モ−ドは互いにクロスモ−ドと
なり、入出力結合線路91に関係する電界モ−ドとリング
共振素子に関係する電界モ−ドは互いに共通モ−ドであ
るから、入出力結合線路91とリング共振素子間の結合は
電界結合となる。入出力結合線路91とリング共振素子間
の結合容量が所要量より小なる場合には、両者間に結合
プロ−ブ又は結合容量板を介在させることによって結合
容量を調整することができる。入出力結合線路91とリン
グ共振素子間の結合容量が小なる場合には、結合が疎と
なって負荷Ｑの高い共振器が形成され、結合容量が大な
る場合には、結合が密となって負荷Ｑの低い共振器が形
成される。図１（ａ）における隔壁２の右側及び図１
（ｃ）に示したリング共振器の電磁界分布も図２及び図
３に示した分布と同様で、入出力結合線路92とリング共
振素子間の結合関係も入出力結合線路91とリング共振素
子間の結合関係と全く同様である。2 and 3 are cross-sectional views of the essential part showing the electromagnetic field distribution of the notch filter of the present invention. FIG. 2 is a cross-sectional view corresponding to the left side portion of the partition wall 2 in FIG. Is
In the cross-sectional view corresponding to FIG. 1B, the reference numerals in both figures are the same as those in FIG. 1, and in both figures, the solid line with an arrow indicates an electric field, and the broken line with an arrow and a black dot in a circle. The symbols with a cross represent magnetic fields. As is apparent from both figures, the magnetic field is related to the input and output coupling line 9 1 mode - de and magnetic fields related to the ring resonant elements mode - de each other Kurosumo - becomes de, electric field mode related to the input and output coupling line 9 1 - field related to de and the ring resonant element mode - de common mode together - since it is de, coupled between the input and output coupling line 9 1 and the ring resonant element becomes electric field coupling. Coupling capacitance between the input and output coupling line 9 1 and the ring resonant element is when made smaller than the required amount, coupled pro therebetween - it is possible to adjust the coupling capacitance by interposing the blanking or coupling capacitor plate. If the coupling capacitance between the input and output coupling line 9 1 and the ring resonant element becomes small, the coupling is loose and become in high loaded Q resonator formed, if the coupling capacitance is large, the coupling is tightly As a result, a resonator having a low load Q is formed. The right side of the partition wall 2 in FIG.
The electromagnetic field distribution of the ring resonator shown in (c) is the same as that shown in FIGS. 2 and 3, and the coupling relationship between the input / output coupling line 9 2 and the ring resonant element is the same as that of the input / output coupling line 9 1 and the ring. This is exactly the same as the coupling relationship between the resonant elements.
【０００９】図４は、本発明ノッチフィルタの等価回路
図で、入出力結合線路91は、その直径を比較的大に形成
してあるので、その特性インピ−ダンスが外部回路の特
性インピ−ダンスに比し低くなって容量性の結合線路と
なり、入出力結合線路92は、その直径を比較的小に形成
してあるので、その特性インピ−ダンスが外部回路の特
性インピ−ダンスに比し高くなって誘導性の結合線路と
なる。したがって、図４の等価回路図は、図５に示した
等価回路図のように書き換えることができる。図５にお
ける共振回路R1の共振周波数fLを共振回路R2の共振周波
数fHに比し適宜低くなるように回路定数を定めると、共
振回路R1を構成する入出力結合線路91が容量性の結合線
路で、共振回路における誘導性リアクタンス分を打ち消
すこととなるので、共振周波数より高い周波数領域にお
ける伝送特性の立ち上りを急峻にすることができる。
又、共振回路R2を構成する入出力結合線路92が誘導性の
結合線路で、共振回路における容量性リアクタンス分を
打ち消すこととなるので、共振周波数より低い周波数領
域における伝送特性の立ち下がりを急峻にすることがで
きる。したがって、共振周波数fLとfH間の通過域の立ち
上り及び立ち下がりが急峻となって、通過域における伝
送特性を良好にすることができる。図６は、本発明ノッ
チフィルタの伝送特性の一例を示す図で、横軸は周波
数、縦軸は減衰量である。[0009] Figure 4 is an equivalent circuit diagram of the present invention the notch filter, the input-output coupling line 9 1, so is formed in a relatively large its diameter, its characteristics Inpi - dance external circuit characteristics Inpi - becomes capacitive coupling line is lower than the dance, the input-output coupling line 9 2 is formed on a relatively small its diameter, its characteristics Inpi - dance characteristics of the external circuit Inpi - specific dance It becomes higher and becomes an inductive coupled line. Therefore, the equivalent circuit diagram of FIG. 4 can be rewritten as the equivalent circuit diagram shown in FIG. When determining the circuit constant so appropriately lower than the resonant frequency f H of the resonant frequency f L of the resonance circuit R 1 resonance circuit R 2 in FIG. 5, the input-output coupling line 9 1 constituting a resonant circuit R 1 Since the capacitive coupled line cancels out the inductive reactance component in the resonance circuit, the rise of the transmission characteristic in the frequency region higher than the resonance frequency can be made steep.
Further, since the input / output coupling line 9 2 forming the resonance circuit R 2 is an inductive coupling line and cancels the capacitive reactance component in the resonance circuit, the fall of the transmission characteristic in the frequency region lower than the resonance frequency is prevented. Can be steep. Therefore, the rise and fall of the pass band between the resonance frequencies f L and f H become steep, and the transmission characteristics in the pass band can be improved. FIG. 6 is a diagram showing an example of the transmission characteristics of the notch filter of the present invention, where the horizontal axis is frequency and the vertical axis is attenuation.
【００１０】図７は、本発明ノッチフィルタをハイブリ
ッド結合回路と組み合わせて構成した CINダイプレクサ
の一例を示す図で、HYB1及びHYB2はそれぞれハイブリッ
ド結合回路で、例えば分配出力信号間に90°の位相差を
生じ、分配出力信号のレベル低下が３dBである90°ハイ
ブリッド結合回路より成る。TV及びTAは入力端子、TV A
は出力端子、TISLはアイソレ−ション端子、NF1 及びNF
2 は本発明ノッチフィルタで、R1L 及びR2L は共振周波
数の低い側のリング共振器、R1H 及びR2H は共振周波数
の高い側のリング共振器である。本発明ノッチフィルタ
NF1 及びNF2 を各構成するリング共振器のうち、共振周
波数の高い側のリング共振器R1H 及びR2H の各共振周波
数を、それぞれ例えばカラ−テレビジョン放送波におけ
る音声搬送波fAに、共振周波数の低い側のリング共振器
R1L 及びR2L の各共振周波数を、fV−fS（fVは映像搬送
波、fV−fSは送信機において発生する不要波）に、それ
ぞれ設定した場合、入力端子TVに映像搬送波fVとfV−fS
を加えると共に、入力端子TAに音声搬送波fAを加える
と、出力端子TVA から映像搬送波fVと音声搬送波fAの合
成波が出力され、アイソレ−ション端子TISLからfV−fS
が出力して無反射終端器（図示していない）に吸収され
る。FIG. 7 is a diagram showing an example of a CIN diplexer constructed by combining the notch filter of the present invention with a hybrid coupling circuit. HYB 1 and HYB 2 are hybrid coupling circuits, for example, 90 ° between distributed output signals. It consists of a 90 ° hybrid coupling circuit that causes a phase difference and the level reduction of the distribution output signal is 3 dB. T V and T A are input terminals, T V A
Is an output terminal, T ISL is an isolation terminal, NF 1 and NF
Reference numeral 2 is a notch filter of the present invention, R 1L and R 2L are ring resonators on the low resonance frequency side, and R 1H and R 2H are ring resonators on the high resonance frequency side. The present invention notch filter
Of the ring resonators constituting NF 1 and NF 2 , each resonance frequency of the ring resonators R 1H and R 2H on the high resonance frequency side, respectively, for example, in the sound carrier f A in the color television broadcast wave, Ring resonator with lower resonance frequency
When each resonance frequency of R 1L and R 2L is set to f V −f S (f V is a video carrier and f V −f S is an unnecessary wave generated in the transmitter), the video is input to T V. Carrier waves f V and f V −f S
With added, the addition of sound carrier f A to an input terminal T A, is output composite wave of the picture carrier f V and sound carrier f A from the output terminal T VA, isolator - Deployment from the terminal T ISL f V -f S
Is output and absorbed by a non-reflecting terminator (not shown).
【００１１】図８は、図７に示した本発明 CINノッチダ
イプレクサの伝送特性、即ち、入力端子TVから出力端子
TVA に到る伝送特性又は入力端子TAからアイソレ−ショ
ン端子TISLに到る伝送特性の一例を示す図で、横軸及び
縦軸は図６と同様である。図９は、図７に示した本発明
CINノッチダイプレクサにおける入力端子TA及び出力端
子TVA 間又は入力端子TV及びアイソレ−ション端子TISL
間の伝送特性の一例を示す図で、横軸及び縦軸は図６と
同様である。FIG. 8 shows the transmission characteristics of the CIN notch diplexer of the present invention shown in FIG. 7, that is, from the input terminal T V to the output terminal.
FIG. 6 is a diagram showing an example of a transmission characteristic reaching T VA or a transmission characteristic reaching from the input terminal T A to the isolation terminal T ISL , and the horizontal axis and the vertical axis are the same as those in FIG. FIG. 9 shows the present invention shown in FIG.
Between input terminal T A and output terminal T VA of CIN notch diplexer or input terminal T V and isolation terminal T ISL
It is a figure which shows an example of the transmission characteristic between, and the horizontal axis and the vertical axis are the same as that of FIG.
【００１２】[0012]
【発明の効果】本発明ノッチフィルタを形成するリング
共振素子は、共振波長に応じて適当な厚さの金属板で形
成することにより、機械的強度を大にすることが可能
で、インダクタンス形成部の基部及び容量形成部を共通
のシ−ルドケ−スの下壁に各固定してあるから共振素子
全体を十分な機械的強度を有するように形成することが
できる。リング共振素子のインダクタンス形成部は、金
属板を単に折り曲げ又はわん曲させるのみで形成するこ
とができるから、加工が容易である。リング共振素子の
幅に対して長手方向の長さが比較的短いから小型化が可
能である。リング共振素子の幅に対して長手方向の長さ
が比較的短いためにインピ−ダンスが低く、共振素子に
流れる電流が比較的大となるが、共振素子の幅が比較的
広いため電流密度は比較的小となり、この電流によって
発熱したとしても、共振素子の表面積が比較的大なるた
め放熱効果が良好で、温度上昇を抑えることができ、し
たがって、電力容量が大である。リング共振素子のイン
ピ−ダンスが低いため、共振素子に生ずる電圧も低く、
耐圧特性が良好である。このようなリング共振素子を備
えた本発明ノッチフィルタは、機械的に堅牢で、小型化
が可能であり、電気的諸特性が良好である。本発明ノッ
チフィルタは、共振周波数微調整素子における駆動螺子
の外端部が共通のシ−ルドケ−スの外部に突出している
のみで、入出力結合線路を共通のシ−ルドケ−スに内装
してあるから、形状が極めて簡潔小型である。本発明ノ
ッチフィルタにおいては、入出力結合線路の特性インピ
−ダンスを適宜調整することにより、伝送特性の立ち上
り又は立ち下がりの補償素子を兼ねさせることができる
ので、従来のように立ち上がり又は立ち下がり特性補償
用のスタブを特に設ける必要がなく、この点からも全体
を簡潔小型に形成することができる。本発明ノッチフィ
ルタを用いて構成した CINノッチダイプレクサにおいて
は、従来のように独立した４個のノッチフィルタを用い
る必要がなく、共通のシ−ルドケ−スに２個のリング共
振器を内装して成るノッチフィルタを２個用いるのみで
足りるから、従来のようにノッチフィルタ相互の接続回
路を必要とせず、又、本発明ノッチフィルタ自体も小型
であるから、 CINノッチダイプレクサ全体を極めて簡潔
小型化することが可能となる。The ring resonance element forming the notch filter of the present invention can be made to have a large mechanical strength by forming it with a metal plate having an appropriate thickness according to the resonance wavelength, and the inductance forming portion. Since the base portion and the capacitance forming portion are fixed to the lower wall of the common shield case, the entire resonant element can be formed to have sufficient mechanical strength. Since the inductance forming portion of the ring resonant element can be formed by simply bending or bending a metal plate, it is easy to process. Since the length in the longitudinal direction is relatively short with respect to the width of the ring resonant element, the size can be reduced. Since the length in the longitudinal direction is relatively short with respect to the width of the ring resonant element, the impedance is low, and the current flowing through the resonant element is relatively large. However, since the width of the resonant element is relatively wide, the current density is Even if the current becomes relatively small and heat is generated by this current, the surface area of the resonant element is relatively large, so that the heat dissipation effect is good and the temperature rise can be suppressed, and therefore the power capacity is large. Since the impedance of the ring resonance element is low, the voltage generated in the resonance element is also low,
Good withstand voltage characteristics. The notch filter of the present invention including such a ring resonant element is mechanically robust, can be downsized, and has excellent electrical characteristics. In the notch filter of the present invention, only the outer end of the driving screw in the resonance frequency fine adjustment element projects outside the common shield case, and the input / output coupling line is incorporated in the common shield case. Therefore, the shape is extremely simple and compact. In the notch filter of the present invention, by appropriately adjusting the characteristic impedance of the input / output coupling line, it is possible to serve also as the compensating element for the rising or falling of the transmission characteristic, and thus the rising or falling characteristic as in the conventional case. It is not necessary to provide a compensating stub in particular, and in this respect as well, the whole can be formed in a simple and small size. In the CIN notch diplexer constructed by using the notch filter of the present invention, it is not necessary to use four independent notch filters as in the conventional case, and two ring resonators are provided in a common shield case. Since it is sufficient to use only two notch filters, it is not necessary to connect the notch filters to each other as in the conventional case, and the notch filter of the present invention itself is small. Therefore, the entire CIN notch diplexer can be made extremely simple and compact. It becomes possible.
【図１】本発明の一実施例を示す断面図である。FIG. 1 is a sectional view showing an embodiment of the present invention.
【図２】本発明ノッチフィルタの電磁界分布を示す要部
断面図である。FIG. 2 is a sectional view of an essential part showing an electromagnetic field distribution of the notch filter of the present invention.
【図３】本発明ノッチフィルタの電磁界分布を示す要部
断面図である。FIG. 3 is a sectional view of an essential part showing an electromagnetic field distribution of the notch filter of the present invention.
【図４】本発明ノッチフィルタの等価回路図である。FIG. 4 is an equivalent circuit diagram of the notch filter of the present invention.
【図５】本発明ノッチフィルタの等価回路図である。FIG. 5 is an equivalent circuit diagram of the notch filter of the present invention.
【図６】本発明ノッチフィルタの伝送特性の一例を示す
図である。FIG. 6 is a diagram showing an example of transmission characteristics of the notch filter of the present invention.
【図７】本発明ノッチフィルタを用いて成るノッチダイ
プレクサを示す図である。FIG. 7 is a diagram showing a notch diplexer using the notch filter of the present invention.
【図８】本発明ノッチダイプレクサの伝送特性の一例を
示す図である。FIG. 8 is a diagram showing an example of transmission characteristics of the notch diplexer of the present invention.
【図９】本発明ノッチダイプレクサの伝送特性の一例を
示す図である。FIG. 9 is a diagram showing an example of transmission characteristics of the notch diplexer of the present invention.
【図１０】従来のノッチフィルタを示す断面図である。FIG. 10 is a cross-sectional view showing a conventional notch filter.
【図１１】従来のノッチフィルタを示す断面図である。FIG. 11 is a sectional view showing a conventional notch filter.
１ 共通のシ−ルドケ−ス ２ 隔壁 31及び32 リング共振素子のインダクタンス形成部 41及び42 リング共振素子の容量形成部 51及び52 固体誘電体 61及び62 可動電極板 71及び72 駆動螺子 81及び82 ロックナット 91及び92 入出力結合線路 10 孔隙 111 及び112 同軸接栓 HYB1及びHYB2 ハイブリッド結合回路 NF1 及びNF2 本発明ノッチフィルタ R1L 及びR2L 本発明ノッチフィルタの構成共振器 R1H 及びR2H 本発明ノッチフィルタの構成共振器 TV及びTA 入力端子 TVA 出力端子 TISL アイソレ−ション端子 12 外部導体 13 半同軸共振素子 14 入出力結合ル−プ 15 外部回路との結合用同軸線路 16 スタブ 17 導波管壁1 Common shield case 2 Partition 3 1 and 3 2 Ring resonance element inductance forming part 4 1 and 4 2 Ring resonance element capacitance forming part 5 1 and 5 2 Solid dielectric 6 1 and 6 2 Movable electrode plate 7 1 and 7 2 Drive screw 8 1 and 8 2 Lock nut 9 1 and 9 2 Input / output coupling line 10 Holes 11 1 and 11 2 Coaxial plug HYB 1 and HYB 2 Hybrid coupling circuit NF 1 and NF 2 The notch filter of the present invention R 1L and R 2L Configuration of notch filter of the present invention Resonator R 1H and R 2H Configuration of notch filter of the present invention Resonator T V and T A Input terminal T VA Output terminal T ISL isolation terminal 12 Outer conductor 13 Half-coaxial resonance Element 14 Input / output coupling loop 15 Coaxial line for coupling to external circuit 16 Stub 17 Waveguide wall
Claims (4)
壁によって分割して成る２個のシ−ルドケ−スと、 前記分割形成された２個のシ−ルドケ−スの各下壁に各
一端を固定した金属板を折り曲げ又はわん曲させて成る
インダクタンス形成部及び前記各インダクタンス形成部
の他端及びこの他端と対向する前記シ−ルドケ−スの下
壁との間における容量形成部より成るリング共振素子
と、 前記隔壁を貫いて、前記分割形成された２個のシ−ルド
ケ−スに内装され、軸方向が前記各リング共振素子の共
振長方向と直交する共通の入出力結合線路とを備えたこ
とを特徴とするノッチフィルタ。1. A two shield case formed by dividing a common shield case by a partition wall made of a conductor, and lower walls of the two divided case. An inductance forming part formed by bending or bending a metal plate having one end fixed to each other, and the other end of each inductance forming part and the capacitance formation between the other end and the lower wall of the shield case facing the other end. Common input / output in which a ring resonance element formed of a ring portion and a partition case penetrating through the partition wall are housed in the divided two case cases, and the axial direction is orthogonal to the resonance length direction of each ring resonance element. A notch filter having a coupling line.
方のシ−ルドケ−スに内装されたリング共振素子より成
る共振器の共振波長を比較的に低く形成し、この共振器
内における共通の入出力結合線路部分の長さを、電気長
で共振波長の1/2 以下に形成し、その特性インピ−ダン
スを外部回路の特性インピ−ダンスに比し低く形成する
と共に、分割形成された２個のシ−ルドケ−スの他方の
シ−ルドケ−スに内装されたリング共振素子より成る共
振器の共振波長を比較的に高く形成し、この共振器内に
おける共通の入出力結合線路部分の長さを、電気長で共
振波長の1/2 以下に形成し、その特性インピ−ダンスを
外部回路の特性インピ−ダンスに比し高く形成して成る
請求項１に記載のノッチフィルタ。2. A resonance wavelength of a resonator composed of a ring resonance element installed in one of the two divided cases of the divided case is formed to be relatively low, and the resonator has a relatively low resonance wavelength. the length of the common input-output coupling line sections of the inner, formed in electrical length to 1/2 or less of the resonant wavelength, the characteristic Inpi - characteristics of the external circuit dance Inpi - thereby formed lower than the dance, divided The resonance wavelength of the resonator constituted by the ring resonance element installed in the other shield case of the two formed shield cases is made relatively high, and common input / output in this resonator is achieved. the length of the coupling line portion was formed to 1/2 or less of the resonant wavelength in electrical length, its characteristics Inpi - characteristics of the external circuit dance Inpi - notch of claim 1 comprising high form than the dance filter.
分配出力端子と第２の90°ハイブリッド結合回路の一方
の分配出力端子との間に第１のノッチフィルタを挿入接
続し、前記第１の90°ハイブリッド結合回路の他方の分
配出力端子と前記第２の90°ハイブリッド結合回路の他
方の分配出力端子との間に第２のノッチフィルタを挿入
接続すると共に、前記第１及び第２のノッチフィルタ
を、 共通のシ−ルドケ−ス内を導体より成る隔壁によって分
割して成る２個のシ−ルドケ−スと、 前記分割形成された２個のシ−ルドケ−スの各下壁に各
一端を固定した金属板を折り曲げ又はわん曲させて成る
インダクタンス形成部及び前記各インダクタンス形成部
の他端及びこの他端と対向する前記シ−ルドケ−スの下
壁との間における容量形成部より成るリング共振素子
と、 前記隔壁を貫いて、前記分割形成された２個のシ−ルド
ケ−スに内装され、軸方向が前記各リング共振素子の共
振長方向と直交する共通の入出力結合線路とを備えたノ
ッチフィルタで形成したことを特徴とするノッチダイプ
レクサ。3. A first notch filter is inserted and connected between one distribution output terminal of the first 90 ° hybrid coupling circuit and one distribution output terminal of the second 90 ° hybrid coupling circuit, A second notch filter is inserted and connected between the other distribution output terminal of the first 90 ° hybrid coupling circuit and the other distribution output terminal of the second 90 ° hybrid coupling circuit, and the first and second Of the notch filter of the above, two shield cases formed by dividing a common shield case by a partition wall made of a conductor, and lower walls of the two shield cases formed by the division. An inductance forming part formed by bending or bending a metal plate having one end fixed to each other, and the other end of each inductance forming part and the capacitance formation between the other end and the lower wall of the shield case facing the other end. Consists of parts A ring resonance element and a common input / output coupling line that penetrates the partition wall and is housed in the two separately formed shield cases and has an axial direction orthogonal to the resonance length direction of each ring resonance element. A notch diplexer characterized by being formed by a notch filter equipped with.
方のシ−ルドケ−スに内装されたリング共振素子より成
る共振器の共振波長を比較的に低く形成し、この共振器
内における共通の入出力結合線路部分の長さを、電気長
で共振波長の1/2 以下に形成し、その特性インピ−ダン
スを外部回路の特性インピ−ダンスに比し低く形成する
と共に、分割形成された２個のシ−ルドケ−スの他方の
シ−ルドケ−スに内装されたリング共振素子より成る共
振器の共振波長を比較的に高く形成し、この共振器内に
おける共通の入出力結合線路部分の長さを、電気長で共
振波長の1/2 以下に形成し、その特性インピ−ダンスを
外部回路の特性インピ−ダンスに比し高く形成して成る
請求項３に記載のノッチダイプレクサ。4. A resonance wavelength of a resonator formed of a ring resonance element installed in one of the two divided cases of the divided case is formed to be relatively low, and the resonator is formed. the length of the common input-output coupling line sections of the inner, formed in electrical length to 1/2 or less of the resonant wavelength, the characteristic Inpi - characteristics of the external circuit dance Inpi - thereby formed lower than the dance, divided The resonance wavelength of the resonator constituted by the ring resonance element installed in the other shield case of the two formed shield cases is made relatively high, and common input / output in this resonator is achieved. the length of the coupling line portion was formed to 1/2 or less of the resonant wavelength in electrical length, its characteristics Inpi - characteristics of the external circuit dance Inpi - notch according to claim 3 comprising high form than the dance Diplexer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4355698A JPH07118601B2 (en) | 1992-12-19 | 1992-12-19 | Notch filter and notch diplexer using the notch filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4355698A JPH07118601B2 (en) | 1992-12-19 | 1992-12-19 | Notch filter and notch diplexer using the notch filter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06188607A true JPH06188607A (en) | 1994-07-08 |
| JPH07118601B2 JPH07118601B2 (en) | 1995-12-18 |
Family
ID=18445312
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4355698A Expired - Lifetime JPH07118601B2 (en) | 1992-12-19 | 1992-12-19 | Notch filter and notch diplexer using the notch filter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07118601B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6188446B1 (en) * | 1998-04-23 | 2001-02-13 | Thomcast Communications, Inc. | Dual diplexer combining device and television broadcast transmission system using same |
| JP2010062821A (en) * | 2008-09-03 | 2010-03-18 | Mitsubishi Electric Corp | High frequency resonator and filter |
| KR101026416B1 (en) * | 2010-06-15 | 2011-04-07 | 주식회사 이너트론 | Apparatus for fixing open type notch and notch filter with it |
| JP2016517249A (en) * | 2013-04-26 | 2016-06-09 | ノースロップ グルマン システムズ コーポレーションＮｏｒｔｈｒｏｐ Ｇｒｕｍｍａｎ Ｓｙｓｔｅｍｓ Ｃｏｒｐｏｒａｔｉｏｎ | Broadband tunable notch removal |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53140339U (en) * | 1977-04-12 | 1978-11-06 | ||
| JPS6232702A (en) * | 1985-08-05 | 1987-02-12 | Nippon Dengiyou Kosaku Kk | Band-stop filter |
| JPH0613801A (en) * | 1992-06-24 | 1994-01-21 | Nippon Dengiyou Kosaku Kk | Notch filter |
-
1992
- 1992-12-19 JP JP4355698A patent/JPH07118601B2/en not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53140339U (en) * | 1977-04-12 | 1978-11-06 | ||
| JPS6232702A (en) * | 1985-08-05 | 1987-02-12 | Nippon Dengiyou Kosaku Kk | Band-stop filter |
| JPH0613801A (en) * | 1992-06-24 | 1994-01-21 | Nippon Dengiyou Kosaku Kk | Notch filter |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6188446B1 (en) * | 1998-04-23 | 2001-02-13 | Thomcast Communications, Inc. | Dual diplexer combining device and television broadcast transmission system using same |
| JP2010062821A (en) * | 2008-09-03 | 2010-03-18 | Mitsubishi Electric Corp | High frequency resonator and filter |
| KR101026416B1 (en) * | 2010-06-15 | 2011-04-07 | 주식회사 이너트론 | Apparatus for fixing open type notch and notch filter with it |
| JP2016517249A (en) * | 2013-04-26 | 2016-06-09 | ノースロップ グルマン システムズ コーポレーションＮｏｒｔｈｒｏｐ Ｇｒｕｍｍａｎ Ｓｙｓｔｅｍｓ Ｃｏｒｐｏｒａｔｉｏｎ | Broadband tunable notch removal |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07118601B2 (en) | 1995-12-18 |
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