Band elimination filter and connector provided with band elimination filter
Abstract
A filter (100) contains multiple multilayer capacitors (110). The multilayer capacitor (110) is radiately arranged on the pillar side centering on a signal line (120). The electrode surface of the internal electrode of a multilayer capacitor (110) and the exterior electrode is arranged so that it may become almost parallel to the line of magnetic force which occurs by the current (140) which flows through a signal line (120).

Term
No projected expiry on record.
- Priority
- Filed
- Published
- Today
14 claims: 14 independent, 0 dependent
- 1信号ライン(120)を流れる電流の特定の周波数成分を除去する帯域除去フィルタであって、 前記信号ライン(120)を軸として放射状に配置されたメタマテリアル(110)を備え、 前記メタマテリアル(110)は、前記周波数成分における透磁率が負になるように配置されている帯域除去フィルタ。
- 2前記メタマテリアル(110)は、 各々が絶縁物を介して互いに対向する第1および第2電極からなる複数の電極対(112)と、 前記第1および第2電極を電気的に接続する接続体とを含み、 前記第1および第2電極の各電極面は、前記電流によって形成される磁力線に対して実質的に平行となるように配置されている、請求の範囲第1項に記載の帯域除去フィルタ。
- 3前記接続体は、前記電流によって形成される磁力線が前記第1および第2電極で挟まれた空間を通過することを妨げないように配置されている、請求の範囲第2項に記載の帯域除去フィルタ。
- 4前記接続体は、平行に対向して形成された2つの外部電極(114a,114b)からなり、 前記2つの外部電極(114a,114b)の各電極面は、前記電流によって形成される磁力線に対し実質的に平行となるように配置されている、請求の範囲第3項に記載の帯域除去フィルタ。
- 5前記メタマテリアル(110)は、 絶縁物を介して互いに平行に配置された複数の平板電極(112)と、 前記複数の平板電極の偶数番目の平板電極と電気的に接続された第1接続電極(114a)と、 前記複数の平板電極の奇数番目の平板電極と電気的に接続された第2接続電極(114b)とを含み、 前記第1および第2接続電極(114a,114b)の各電極面は、前記複数の平板電極(112)の電極面に対して垂直に形成され、 前記複数の平板電極(112)の各電極面は、前記電流によって形成される磁力線に対して実質的に平行となるように配置されている、請求の範囲第1項に記載の帯域除去フィルタ。
- 6前記信号ライン(120)に対し垂直に立設されたドーナツ板(210)をさらに備え、 前記メタマテリアル(110)は前記ドーナツ板(210)上に固定されている、請求の範囲第5項に記載の帯域除去フィルタ。
- 7前記メタマテリアル(110)は、 各々が互いに平行する複数の電極面を有する第1くし型電極(114a,112)および第2くし型電極(114b,112)を含み、 前記第1くし型電極(114a,112)の最上層の電極面と前記第2くし型電極(114b,112)の最上層の電極面とが所定の間隔をもって平行に対向するように形成され、かつ、前記第1くし型電極(114a,112)の最下層の電極面と前記第2くし型電極(114b,112)の最下層の電極面とが所定の間隔をもって平行に対向するように形成され、 前記第1くし型電極(114a,112)および第2くし型電極(114b,112)の各電極面は、前記電流によって形成される磁力線に対して実質的に平行となるように配置されている、請求の範囲第1項に記載の帯域除去フィルタ。
- 8前記信号ライン(120)に対し垂直に立設されたドーナツ板(210)をさらに備え、 前記メタマテリアル(110)は前記ドーナツ板(210)上に固定されている、請求の範囲第7項に記載の帯域除去フィルタ。
- 9前記メタマテリアル(110)は、 前記信号ライン(120)を軸とし、互いに径が異なる円筒面である複数の円筒型電極(420)と、 前記複数の円筒型電極(420)の偶数番目の円筒型電極と電気的に接続された第1接続電極(430a)と、 前記複数の円筒型電極(420)の奇数番目の円筒型電極と電気的に接続された第2接続電極(430b)とを含む、請求の範囲第1項に記載の帯域除去フィルタ。
- 10前記メタマテリアル(110)は、複数の基材(310)から成り、 前記基材(310)には、 各々が絶縁物を介して互いに対向する第1および第2電極(310,320)と、 前記第1および第2電極(310,320)を電気的に接続する接続体(340,350)とが形成されている、請求の範囲第1項に記載の帯域除去フィルタ。
- 11信号ライン(120)を流れる電流の特定の周波数成分を除去する帯域除去フィルタであって、 前記信号ライン(120)を軸として放射状に配置されたメタマテリアル(110)を備え、 前記メタマテリアル(110)は、 複数の第1電極(112)と、 前記複数の第1電極(112)のそれぞれに対向する複数の第2電極(112)と、 前記複数の第1電極(112)と前記複数の第2電極(112)とをそれぞれ電気的に接続する接続体(114a,114b)を含み、 各前記第1電極(112)および各前記第2電極(112)の電極面は、前記信号ライン(120)を軸として前記信号ライン(120)を取り囲むように配置されている、帯域除去フィルタ。
- 12信号ライン(120)を流れる電流の特定の周波数成分を除去する帯域除去フィルタであって、 前記信号ライン(120)を軸として放射状に配置されたメタマテリアル(110)を備え、 前記メタマテリアル(110)は、 複数の第1電極(112)と、 前記複数の第1電極(112)のそれぞれに対向する複数の第2電極(112)と、 前記複数の第1電極(112)と前記複数の第2電極(112)とをそれぞれ電気的に接続する接続体(114a,114b)を含み、 各前記第1電極(112)および各前記第2電極(112)の電極面は、前記信号ライン(120)に直交するように配置されている、帯域除去フィルタ。
- 13前記メタマテリアル(110)の前記信号ライン(120)に沿った長さは、前記所定の周波数成分に相当する1波長の1/4より短くなるように形成される、請求の範囲第1項に記載の帯域除去フィルタ。
- 14請求の範囲第1項に記載の帯域除去フィルタを内蔵する帯域除去フィルタ付きコネクタ。
Independent claims14
64 paragraphs, as filed
A connector with a zone removal filter and a zone removal filter
The present invention relates to the zone removal filtering technique which removes the electromagnetic waves of specific frequency, and relates to the zone removal filtering technique using a metamaterial particularly.
Many connectors with a noise rejection function which mounted a zone removal filter and a zone removal filter for removing until now noise current which flows through an electrical cable are proposed. The part is also already produced commercially.
As an example of such filtering technique, there are some which drop a high frequency noise by the feedthrough capacitor or a ferrite. The collector mounting type noise filter which contains in JP, 2000-223881, A (patent documents 1) the substrate consisting of an electric wave absorbent material which has the parallel table and back of each other is indicated. A plurality of through holes which penetrate the substrate are formed in the substrate. <patcit num="1"><text>JP, 2000-223881, A</text></patcit>
<p>The filter using a feedthrough capacitor or a ferrite can remove a noise. However, the attenuation curve of a noise ingredient with these filters is loose, and cannot drop only the electromagnetic waves of the target frequency steeply.</p><p>A frequency band removable with these filters has restriction. For example, since a ferrite is not made, removal of the electromagnetic waves more than a GHz belt passes a 2.4-GHz electromagnetic wave, and it cannot use it for the use of removing a 5-GHz electromagnetic wave.</p><p>When there is such necessity, the method of carrying a tipped type filter in the signal wire on the street of a substrate is taken. However, there is a problem that the mounting area for loading is taken.</p><p>The present invention makes it a subject to be made in order to solve the above problems, and to provide the connector with a zone removal filter and a zone removal filter which can remove the electromagnetic waves of the target frequency steeply.</p>
<p>The invention in this application concerning one aspect of affairs is a zone removal filter from which the specific frequency component of current which flows through a signal line is removed, it has a metamaterial radiately arranged considering a signal line as an axis, and the metamaterial is arranged so that the amplitude permeability in a frequency component may become negative.</p><p>A plurality of electrode pairs which a metamaterial becomes from the 1st and 2nd electrodes in which each counters mutually via an insulator preferably, Including the connection body which electrically connects the 1st and 2nd electrodes, each electrode surface of the 1st and 2nd electrodes is arranged so that it may become parallel substantially to the line of magnetic force formed of current.</p><p>Preferably, the connection body is arranged so that a line of magnetic force may not be prevented from passing [which is formed of current] through the space across which it faced with the 1st and 2nd electrodes.</p><p>Preferably, a connection body consists of two exterior electrodes which countered in parallel and were formed, and each electrode surface of two exterior electrodes is arranged so that it may become parallel substantially to the line of magnetic force formed of current.</p><p>A plurality of plate electrodes by which the metamaterial of each other is preferably arranged in parallel via an insulator, The 1st connection electrode electrically connected with the even-numbered plate electrode of a plurality of plate electrodes, The 2nd connection electrode electrically connected with the odd-numbered plate electrode of a plurality of plate electrodes is included, and it is each electrode surface of the 1st and 2nd connection electrode, It is perpendicularly formed to the electrode surface of a plurality of plate electrodes, and each electrode surface of a plurality of plate electrodes is arranged so that it may become parallel substantially to the line of magnetic force formed of current.</p><p>Preferably, a metamaterial contains the 1st and 2nd comb type electrode which has a plurality of electrode surfaces to which each is mutually parallel, It is formed so that the electrode surface of the top layer of the 1st comb type electrode and the electrode surface of the top layer of the 2nd comb type electrode may be opposite in parallel with a predetermined interval, And it is formed so that the electrode surface of the bottom of the heap of the 1st comb type electrode and the electrode surface of the bottom of the heap of the 2nd comb type electrode may be opposite in parallel with a predetermined interval, and each electrode surface of the 1st and 2nd comb type electrode is arranged so that it may become parallel substantially to the line of magnetic force formed of current.</p><p>Preferably it further has the doughnut board perpendicularly set up to the signal line, and the metamaterial is being fixed on the doughnut board.</p><p>A plurality of cylindrical electrodes whose metamaterials are cylinder sides where paths differ mutually centering on a signal line preferably, The 1st connection electrode electrically connected with the even-numbered cylindrical electrode of a plurality of cylindrical electrodes and the 2nd connection electrode electrically connected with the odd-numbered cylindrical electrode of a plurality of cylindrical electrodes are included.</p><p>Preferably, a metamaterial comprises a plurality of substrates and the 1st and 2nd electrodes in which each counters mutually via an insulator, and the connection body which electrically connects the 1st and 2nd electrodes are formed in the substrate.</p><p>The invention in this application concerning other aspects of affairs is a zone removal filter from which the specific frequency component of current which flows through a signal line is removed, it has a metamaterial radiately arranged considering a signal line as an axis, and metamaterials are a plurality of 1st electrodes, Including the connection body which electrically connects a plurality of 2nd electrodes that counter each of a plurality of 1st electrodes, and a plurality of 1st electrodes and a plurality of 2nd electrodes, the electrode surface of each 1st electrode of the above and each 2nd electrode of the above is arranged so that a signal line may be surrounded centering on a signal line.</p><p>The invention in this application concerning other aspects of affairs is a zone removal filter from which the specific frequency component of current which flows through a signal line is removed, It has a metamaterial radiately arranged considering a signal line as an axis, and is a metamaterial, Including the connection body which electrically connects a plurality of 2nd electrodes that counter each of a plurality of 1st internal electrodes, and a plurality of 1st electrodes and a plurality of 2nd internal electrodes, the electrode surface of each 1st electrode of the above and each 2nd electrode of the above is arranged so that it may intersect perpendicularly with a signal line.</p><p>Preferably, the length in alignment with the signal line of the metamaterial is formed so that it may become shorter than one wave of 1/4 equivalent to a predetermined frequency component.</p><p>The invention in this application concerning other aspects of affairs is a connector with a zone removal filter which builds in an above-mentioned zone removal filter.</p>
<p>According to the present invention, the specific frequency component of electromagnetic waves can be steeply attenuated with the metamaterial arranged around an electric wire.</p>
<figref num="1A">It is a figure showing the composition of filter 100.</figref><figref num="1B">It is a figure showing the composition of multilayer capacitor 110.</figref><figref num="2">It is a figure showing the composition of multilayer capacitor 110.</figref><figref num="3">It is a sectional view of filter 100 which makes a cutting plane the field containing signal line 120.</figref><figref num="4">It is a figure for explaining other examples of arrangement of multilayer capacitor 110.</figref><figref num="5">It is a figure showing the relation between the arrangement of a multilayer capacitor to a signal line, and the filter property of a multilayer capacitor.</figref><figref num="6">It is a graph which shows the actual measurement of the amplitude permeability of a multilayer capacitor.</figref><figref num="7">It is a figure showing the composition of filter 200.</figref><figref num="8">It is a perspective view of filter 300.</figref><figref num="9">It is a sectional view of filter 300.</figref><figref num="10">It is a perspective view of filter 400.</figref><figref num="11">It is a sectional view of filter 400 which makes a cutting plane a plane including an axis.</figref><figref num="12">It is a sectional view of the diameter direction of filter 400.</figref><figref num="13">It is a figure showing signs that filter 100 is inserted in connector 1300.</figref><figref num="14">It is 4 quadrant figure showing the characteristic of appearing to the incidence wave to a medium according to the numerals of amplitude permeability mu and dielectric constant epsilon.</figref><figref num="15">It is a figure for explaining the resonant circuit formed with a resonator in resonance frequency.</figref>
Explanations of letters or numerals
10 Resonator, and 11a and 11B Exterior Electrode, and 12a, 12B, 13a and 13B Internal Electrode, 100 Filter and 110 Multilayer Capacitor and 112 Internal Electrode, 114a, 114B Exterior Electrode, 120 Signal Line and 130 Armoring Part and 140 Current and 200 Filter, 210 a plate and 220 A pipe and 300 A filter and 310 A substrate and 320 An electrode and 330 An electrode and 340 Beer and 350 a conductor -- a board and 400 A filter and 410 A cylindrical condenser and 420 An internal electrode, and 430a and 430b An exterior electrode and 1300 Connector.
This embodiment of the invention is described in detail, referring to drawings. About the same or considerable portion in a figure, the same numerals are attached and the explanation is not repeated.
[Summary of the Invention] The present invention provides the connector with a zone removal filter or a zone removal filter which performs zone removal of current using a metamaterial.
Metamaterial (metamaterial) is an artificial substance with the characteristic [be / electromagnetism / or / it / optical] which the substance which exists in a nature does not have. As the typical characteristic of such a metamaterial, negative amplitude permeability (mu< 0), a negative dielectric constant (epsilon< 0), or a negative refractive index is mentioned (when each of amplitude permeability and dielectric constants is negative). The field of the field of mu< 0 and epsilon> 0 or mu> 0, and epsilon< 0 is also called an "evanescent solution field", and the field of mu< 0 and epsilon< 0 is also called a "lefthanded system field. "
Drawing 14 is 4 quadrant figure showing the characteristic of appearing to the incidence wave to a medium according to the numerals of amplitude permeability mu and dielectric constant epsilon. The wave which most substances which exist in a nature are equivalent to the right-hand system medium located in the 1st quadrant shown in Drawing 14, and enters into the medium concerned is spread to an incidence direction, after only the refractive index which becomes settled with amplitude permeability and a dielectric constant is refracted. On the other hand, an incidence wave cannot be spread in the 2nd quadrant and the 4th quadrant (evanescent solution field) which are shown in Drawing 14. In the 3rd field (lefthanded system field) shown in Drawing 14, since a refractive index becomes negative, the wave which entered into the medium concerned is spread to an incidence direction and an opposite direction.
Now, if a metamaterial is used, the unnecessary electromagnetic waves emitted from electronic equipment etc. can be controlled. That is, if magnetic flux enters into the medium which negative amplitude permeability reveals, the unnecessary electromagnetic waves emitted from electronic equipment etc. can be reflected or controlled.
According to each following embodiment, the device (typically multilayer capacitor) containing a plurality of electrodes left and arranged only at a prescribed interval mutually is used as a metamaterial. In such a device, the resonant circuit which made the subject electric capacity (capacitance) which arises between the electrodes concerned is formed. This resonant circuit has susceptibility in the specific frequency component of the electromagnetic waves which occur because exchange current flows into a conductor, and may produce an electric resonance phenomenon in response to the electromagnetic waves of this frequency component. According to this resonance phenomenon, the magnetic flux given to the resonant circuit and reverse magnetic flux occur, and an electric field is guided in the direction which negates the electric field which produces by the current which flows through a conductor by this occurring magnetic flux. As a result, if it sees on the whole, the electromagnetic waves emitted from a conductor will be reflected or controlled. Below, the above devices are called a resonator.
Drawing 15 is a figure for explaining the resonant circuit formed with resonator 10 in resonance frequency. Although explained here that resonator 10 is a multilayer capacitor, the structure of formation of a resonant circuit is the same also to other devices.
The 1st internal electrode 12a arranged with reference to Drawing 15 so that the electrode surface may become parallel substantially to the line of magnetic force of a magnetic field, 13a, the 2nd internal electrode 12b and 13b, the 1st exterior electrode 11a, and the 2nd exterior electrode 11b act as coils (inductor) according to the course length.
In resonator 10, electrode 13a of the bottom of the heap is electrically mutually connected with electrode 12a of the top layer, and the 1st exterior electrode 11a among the 1st internal electrode among the 1st internal electrode, and the current course containing these is formed. Similarly, it is electrically mutually connected also with electrode 13b of the bottom of the heap among the 2nd internal electrode among electrode 12b of the top layer, the 2nd exterior electrode 11b, and the 2nd internal electrode, and the current course containing these is formed. It is here and is the electric capacity (capacitance C1) between electrode 12a and electrode 12b, Via the electric capacity (capacitance C2) between electrode 13a and electrode 13b, both the current course is electrically connected mutually and the resonant circuit containing inductance L1-L6 which arises with capacitance C1 and C2 and each electrode is formed. Therefore, resonator 10 according to this embodiment has the resonance frequency which becomes settled by capacitance (C1+C2) and inductance (L1+L2+L3+L4+L5+L6), it is that the electromagnetic waves of this resonance frequency enter, and amplitude permeability resonance reveals it.
In the case of a multilayer capacitor, electric capacity occurs in each between adjoining internal electrodes, but other electric capacity except top electric capacity and the lowest electric capacity of the influence of formation on this resonant circuit is small. This is for current to concentrate on the outermost layer of a circulating route from which resonance is started.
According to each following embodiment, it illustrates about the connector with a zone removal filter and a zone removal filter which used the above resonators as a metamaterial.
[A 1st embodiment] According to a 1st embodiment of this invention, it illustrates about the composition of the zone removal filter using the common multilayer capacitor as a metamaterial.
The composition of the zone removal filter (henceforth filter 100) concerning a 1st embodiment is explained referring to Drawing 1. Drawing 1A is a figure showing the composition of filter 100.
Filter 100 contains multiple multilayer capacitors 110. Multilayer capacitor 110 is radiately arranged on the pillar side centering on signal line 120. Multilayer capacitor 110 is being fixed by armoring part 130 which is a nonmagnetic material. As armoring part 130, resin materials, such as Teflon (registered trademark), are suitable. The ground (not shown) may be arranged at the outside side of armoring part 130.
The composition of multilayer capacitor 110 is explained using Drawing 1B and Drawing 2. Drawing 1B and Drawing 2 are figures showing the composition of multilayer capacitor 110, respectively. As shown in Drawing 1B and Drawing 2, multilayer capacitor 110 contains a plurality of internal electrodes 112, the 1st exterior electrode 114a, and the 2nd exterior electrode 114b. Internal electrode 112 is pulled out by turns from the 1st exterior electrode 114a and 2nd exterior electrode 114b. Internal electrode 112 connected to the 1st exterior electrode 114a and internal electrode 112 connected to the 2nd exterior electrode 114b form an electrode pair. In Drawing 1A and Drawing 1B, in order to understand easily, the internal electrode is drawn so that it may look intentionally.
As shown in Drawing 1 and Drawing 3 which is sectional views which looked at filter 100 in respect of signal line 120 being included, multilayer capacitor 110 is arranged so that the electrode surface of internal electrode 112 may become almost parallel to line of magnetic force 150 which occurs by current 140 which flows through signal line 120. That is, the electrode surface of internal electrode 112 is arranged so that signal line 120 may be surrounded centering on signal line 120. The electrode surface of the 1st exterior electrode 114a and the 2nd exterior electrode 114b is arranged so that it may become almost parallel to line of magnetic force 150 which occurs by current 140 which flows through signal line 120. That is, the electrode surface of the 1st exterior electrode 114a and the 2nd exterior electrode 114b is arranged so that it may intersect perpendicularly with signal line 120. These exterior electrodes are not electrically connected to signal line 120 or the ground.
Since it is arranged in this way, multilayer capacitor 110 shows negative magnetic permeability nature. That is, in the resonance frequency which becomes settled by the structure of multilayer capacitor 110, or arrangement, multilayer capacitor 110 shows negative amplitude permeability. For this reason, propagation of the electromagnetic field of resonance frequency is checked.
This multilayer capacitor 110 will produce resonance in response to the specific frequency component (resonance frequency) of the electromagnetic waves which the current generates, if current 140 flows into signal line 120. By resonance within multilayer capacitor 110, reverse magnetic flux occurs inside multilayer capacitor 110, and the electromagnetic waves which the current concerned generates are barred by the electric field guided by this occurring magnetic flux. As a result, in signal line 120, the flow of the exchange current of the resonance frequency ingredient in multilayer capacitor 110 is barred. That is, filter 100 functions as a zone interception filter which intercepts the resonance frequency ingredient of multilayer capacitor 110.
By the way, in order to make multilayer capacitor 110 reveal negative amplitude permeability, length l' in the propagation direction of current 140 in signal line 120 of multilayer capacitor 110 needs to be shorter than lambda/4 at least to wavelength lambda of the electromagnetic waves in resonance frequency. As for length l' of multilayer capacitor 110, it is preferred that it is less than lambda/20.
For example, it considers using multilayer capacitor 110 length l'=1.6mm, W= 0.8 mm in width, and h= 0.8 mm in height. In this case, it is set to lambda= 6.4 mm if lambda/4= length l'. This is equivalent to frequency fmax=46.875GHz in the air. Therefore, when this multilayer capacitor 110 is put in order in the pitch lambda / not more than 4, it turns out that it functions as a metamaterial of a ギガヘルツ belt unrealizable in a ferrite. According to the frequency domain which should be applied with a natural thing, length l of a resonator can be designed suitably.
The composition of filter 100 shown in Drawing 1 and Drawing 2 or multilayer capacitor 110 can be changed suitably.
For example, although it supposes that the number of multilayer capacitors 110 is eight in Drawing 2, the number of layers is not restricted to this. However, at least two electrode pairs are required because of formation of a resonant circuit.
The number of multilayer capacitor 110 is not necessarily restricted to what was shown in Drawing 1, either. For example, although the multilayer capacitor group radiately arranged focusing on signal line 120 showed the example arranged over three steps in Drawing 1, this number of stages can be changed suitably. It can decrease greatly by increasing the number of stages. This is understood also from Drawing 6. frequency and a ratio -- it is a figure showing a relation with amplitude permeability. [as opposed to several kinds of capacity or the numbers of stages of a capacitor in Drawing 6] a ratio -- the ratio of amplitude permeability to that vacuous is expressed as amplitude permeability. the way when five steps are formed rather than the case where three steps of 47-pF multilayer capacitors are formed -- a ratio -- it turns out that change of amplitude permeability is large. This number can also be changed although each multilayer capacitor group presupposed that it consists of eight multilayer capacitors 110 in Drawing 1.
Resonance frequency can be changed by changing the capacity of a multilayer capacitor. As shown in Drawing 6, the resonance frequency to multilayer capacitor (47 pF, 68 pF, and 100 pF) 110 actually differs.
The method of the arrangement to signal line 120 of multilayer capacitor 110 is not necessarily restricted to the thing of Drawing 3. For example, as shown in Drawing 4, it may arrange. Drawing 4 is a figure for explaining other examples of arrangement of multilayer capacitor 110. Drawing 4 is a sectional view which looked at filter 100 in respect of signal line 120 being included like Drawing 3. That is, the electrode surface of internal electrode 112 may be arranged in the direction which abbreviated-intersects perpendicularly with signal line 120, and the electrode surface of the 1st exterior electrode 114a and the 2nd exterior electrode 114b may be arranged in the direction parallel to signal line 120.
It is arranged so that each electrode surface of internal electrode 112, the 1st exterior electrode 114a, and the 2nd exterior electrode 114b may become parallel to the line of magnetic force of the magnetic field which occurs by the current which flows through signal line 120 in above-mentioned explanation, It was said that the negative amplitude permeability which is a function as a metamaterial can be made to reveal. However, the amplitude permeability also with negative also being arranged to a line of magnetic force, so that it may become parallel substantially is revealed. Here, "it is substantially parallel" is a meaning which excepts the state where the line of magnetic force of a magnetic field and each electrode surface cross at right angles, and it also includes the state of having a predetermined angle to a line of magnetic force besides the state where each electrode surface is completely parallel to the line of magnetic force of a magnetic field. Practically, if the size of negative amplitude permeability revealed with filter 100 is a value with which it can be satisfied of the demand of application application etc., it can consider "It is substantially parallel. "
Parallel arrangement is also substantially explained using Drawing 5 about negative amplitude permeability being revealed. the ratio which Drawing 5 produces with multilayer capacitor 110 according to this embodiment of the invention 1 -- it is a figure showing the result of having carried out the simulation of the frequency characteristic of amplitude permeability according to for [of multilayer capacitor 10] 配.
With reference to Drawing 5, arrangement (a) and arrangement (b) correspond to the arrangement shown in Drawing 3 and Drawing 4, respectively, and show the case where each electrode surface of internal electrode 112, the 1st exterior electrode 114a, and the 2nd exterior electrode 114b has been arranged in parallel to the line of magnetic force of a magnetic field. Arrangement (c) shows the case where each electrode surface of internal electrode 112 has been arranged with the angle of 45 degrees to the line of magnetic force of a magnetic field. Arrangement (d) shows the case where it has been arranged so that each electrode surface of the 1st exterior electrode 114a and the 2nd exterior electrode 114b may intersect perpendicularly to the line of magnetic force of a magnetic field, and arrangement (e) shows the case where it has been arranged so that each electrode surface of internal electrode 112 may intersect perpendicularly to the line of magnetic force of a magnetic field.
although resonance frequency has a slight difference in arrangement (a) and arrangement (b) -- a ratio -- as the frequency characteristic of amplitude permeability shows, it turns out that negative, amplitude permeability big enough is revealed. In arrangement (c), although negative amplitude permeability is revealed, it turns out that the size is small as compared with the size of negative amplitude permeability revealed in arrangement (a) and arrangement (b).
on the other hand -- arrangement (d) and arrangement (e) -- a ratio -- as the frequency characteristic of amplitude permeability shows, resonance does not arise, either and it has not revealed negative amplitude permeability, either.
As mentioned above, when one of electrode surfaces intersects perpendicularly and is arranged to the line of magnetic force of a magnetic field among internal electrode 112, the 1st exterior electrode 114a, and the 2nd exterior electrode 114b, Although negative amplitude permeability is not revealed, if it is the other arrangement, each electrode surface is known [entire] by that negative amplitude permeability reveals even if not parallel to the line of magnetic force of a magnetic field. That is, if it is the arrangement in which a magnetic field passes through the space across which it faced with internal electrode 112, as for multilayer capacitor 110, it turns out that negative amplitude permeability is revealed.
Filter 100 explained above has the negative amplitude permeability of the metamaterial in resonance frequency, and the electromagnetic waves of resonance frequency use the phenomenon in which the inside of a metamaterial is not spread. Here, multilayer capacitor 110 according to this embodiment is a passive device which does not need the electric energy from an external power supply etc., but produces resonance only by the electromagnetic waves (especially magnetic flux) emitted in connection with current 140. And multilayer capacitor 110 makes negative amplitude permeability reveal by producing such resonance. Therefore, multilayer capacitor 110 may float electrically between a transmission track and GND. Therefore, without making it connect with GND of a transmission track or the circumference, filter 100 is only arranged so that a transmission track may be enclosed, and it exhibits a filtering function.
It is although the capacitor needs to be correctly arranged between a transmission track and GND in order to give capacity between a transmission track and the surrounding GND and to drop a noise on GND from a transmission track, when using a feedthrough capacitor for example, The filter concerning the present invention is not concerned with the existence of the capacity between a transmission track or GND, but functions as a filter. Therefore, since insertion accuracy is unnecessary, the use as post-installation is attained. Extension for adjusting attenuation is also easy.
A multilayer capacitor is an example of a metamaterial although the metamaterial filter which used the multilayer capacitor has been explained above. For example, the split ring resonator type arranged so that negative amplitude permeability may be revealed instead of multilayer capacitor 110 can also be used.
[A 2nd embodiment] The composition of the zone removal filter (henceforth filter 200) concerning a 2nd embodiment is explained referring to Drawing 7. Drawing 7 is a figure showing the composition of filter 200.
Filter 200 carries out two or more owners of the plate 210 of the doughnut shape by which a plurality of multilayer capacitors 110 were fixed on it. Such a multilayer capacitor 110 is fixed to plate 210 by adhesives, for example. Plate 210 is created by a resin substrate etc. Filter 200 shall be provided with pipe 220 for holding plate 210. However, pipe 220 is not indispensable.
Here, the arrangement to signal line 120 of multilayer capacitor 110 presupposed that it is the arrangement shown in Drawing 4. However, as a 1st embodiment explained, the method of arrangement is not restricted to this.
Since portions other than plate 210 are air among the fields around multilayer capacitor 110 of filter 200, the dielectric constant of the filter 200 whole is small compared with filter 100 concerning a 1st embodiment.
The size of filter 200 concerning this embodiment can be easily changed by fluctuating the number of sheets of the unit which consists of a plurality of multilayer capacitors 110 and plate 210. Therefore, the size change according to the depth which can insert a connector is possible. The amount of attenuation can be easily adjusted with the change in unit number of sheets.
[A 3rd embodiment] The composition of the zone removal filter (henceforth filter 300) concerning a 3rd embodiment is explained referring to Drawing 8 and Drawing 9.
Drawing 8 is a perspective view of filter 300. As shown in Drawing 8, filter 300 consists of three substrates 310. However, the number of substrate 310 is not necessarily restricted to this. At substrate 310, the 1st electrode 320 and the 2nd electrode 330 are embedded. beer 340 and the conductor in which the 1st electrode 320 and 2nd electrode 330 were formed into the resin substrate -- it is electrically connected by board 350.
Drawing 9 is a sectional view of filter 300. the field where the 1st electrode 320 exists, respectively in Drawing (a) (d) 9 -, the field where the 2nd electrode 330 exists, the 2nd electrode 330, and a conductor -- the field between boards 350, and a conductor -- it is a sectional view in the field where board 350 exists.
Substrate 310 can be made from giving the usual printed circuit board construction method to a ceramic multilayer substrate and a resin substrate. Therefore, filter 300 concerning this embodiment can be manufactured cheaply.
Since the electrode of doughnut shape or a sector can be formed according to this form, space can be effectively used rather than putting the resonator of a quadratic prism in order. Therefore, a filter effect can be heightened.
Here, the example using the single plate unit in which only one pair of electrodes are formed as substrate 310 was shown. According to this composition, change of size and adjustment of the amount of attenuation become easy by using the unit of the required number like a 2nd embodiment. However, substrate 310 with which two or more pairs of electrodes were formed may be used.
[A 4th embodiment] The composition of the zone removal filter (henceforth filter 400) concerning a 4th embodiment is explained referring to Drawing 10, Drawing 11, and Drawing 12.
Drawing 10 is a perspective view of filter 400. As shown in Drawing 10, filter 400 contains multiple cylindrical condensers 410 with which a plurality of cylindrical electrodes which are the concentric circle pipe sides where paths differ mutually were formed.
Drawing 11 is a sectional view of cylindrical condenser 410 which makes a cutting plane a plane including an axis. Cylindrical condenser 410 contains the 1st exterior electrode 430a, the 2nd exterior electrode 430b, and internal electrode 420. The odd-numbered internal electrode is connected to the 1st exterior electrode 430a from the outside of Drawing 11 among internal electrodes 420, and the even-numbered internal electrode is connected to the 2nd exterior electrode 430b.
Drawing 12 is a sectional view of the diameter direction of cylindrical condenser 410. Here, cylindrical condenser 410 shall have an internal electrode of seven sheets. However, this number of sheets in particular is not restricted to this.
[A 5th embodiment] Each zone removal filter explained by a 4th embodiment from a 1st embodiment can be mounted in a connector.
Usually, it is provided with a connector, a pin, and a dielectric, and when it is a SMA connector which a user assembles, it becomes possible to add a filtering function only by a user exchanging the existing dielectric part in an isomorphous-like metamaterial filter if needed.
In the case of the connector which serves as an air layer without using the dielectric, like N connector, an APC7MM connector, and K connector, a filtering function can be given only by building a metamaterial filter in a connector area. For example, filter 100 concerning a 1st embodiment can be inserted in connector 1300 as shown in Drawing 13, and a connector with a zone removal function can be manufactured by fixing by silicon resin etc. in connector 1300.
If various ある uses for a connector a multilayer capacitor etc. which were explained by each embodiment to the micro connector used for the substrate of a form from N type connector, it can respond to a remarkable small connector.
With all the points, the embodiment indicated this time is illustration and should be considered not to be restrictive. The range of the present invention is shown by the range of the claim instead of the above-mentioned explanation, and it is meant that the range of a claim, an equivalent meaning, and all the change in within the limits are included.
11 sheets
Sheet 1 Sheet 2 Sheet 3 Sheet 4 Sheet 5 Sheet 6 Sheet 7 Sheet 8 Sheet 9 Sheet 10 Sheet 11
Every citation, both ways
| Document | Relation | Office | Category | Cited during |
|---|---|---|---|---|
| WO2012108351A1 | Cited by | World Intellectual Property Organization (WIPO) | – | International search |
| WO2010100801A1 | Cited by | World Intellectual Property Organization (WIPO) | – | International search |
| WO2019031253A1 | Cited by | World Intellectual Property Organization (WIPO) | – | International search |
| JPWO2012108351A1 | Cited by | Japan | – | Search report |
| JP2020182107A | Cited by | Japan | – | Search report |
| JP5482915B2 | Cited by | Japan | – | Examiner |
| JP5218551B2 | Cited by | Japan | – | Search report |
| WO2010100801A1 | Cited by | World Intellectual Property Organization (WIPO) | – | International search |
| US9754730B2 | Cited by | United States of America | – | Search report |
| US2016268055A1 | Cited by | United States of America | – | Pre-grant |
| JP2000331878A | Cites | Japan | A | International search |
| JP2007158675A | Cites | Japan | A | International search |
| US4424551A | Cites | United States of America | A | International search |
3 members in 2 offices; this record represents the family
Priority claims1
| Document | Office | Kind | Date |
|---|---|---|---|
| 2007330513 | Japan | A |
Members3
| Document | Office | Kind | |
|---|---|---|---|
| WO2009081663A1This record | World Intellectual Property Organization (WIPO) | A1 | |
| JPWO2009081663A1 | Japan | A1 | |
| JP5218428B2 | Japan | B2 |
4 legal events, as 2 offices reported them to INPADOC
Over the term
Point at a mark for the eventEvents
| Event | Code | Office | |
|---|---|---|---|
| Ep: pct application non-entry in european phase122 | 122 | WO | |
| Non-entry into the national phaseNENP | NENP | DE | |
| Wipo information: entry into national phaseWWE | WWE | WO | |
| Ep: the epo has been informed by wipo that ep was designated in this application121 | 121 | WO |
Numbers
- Publication
- 2009/081663
- Application
- 70409
Titles4
- English
- FILTRE D'ELIMINATION DE BANDE ET CONNECTEUR DOTE DE CE FILTRE
- French
- FILTRE D'ÉLIMINATION DE BANDE ET CONNECTEUR DOTÉ DE CE FILTRE
- Unlabeled
- 帯域除去フィルタおよび帯域除去フィルタ付きコネクタ
- Unlabeled
- A connector with a zone removal filter and a zone removal filter
Classification
- CPC, 4
- H01P1/20
- H01G4/35
- H01G4/38
- H01R13/7197
- IPC, 4
- H01P1 20
- H01G4 35
- H01R13 719
- H05K9 00
Designated states4
- Regional, 4
- Zimbabwe
- Turkmenistan
- Türkiye
- Togo