JP4336497B2 - 高周波プリント回路基板ビア - Google Patents
高周波プリント回路基板ビア Download PDFInfo
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- 239000004020 conductor Substances 0.000 claims description 161
- 239000003990 capacitor Substances 0.000 claims description 20
- 239000000758 substrate Substances 0.000 claims description 9
- 230000005540 biological transmission Effects 0.000 claims 8
- 239000000463 material Substances 0.000 claims 1
- 230000008054 signal transmission Effects 0.000 claims 1
- VTLYHLREPCPDKX-UHFFFAOYSA-N 1,2-dichloro-3-(2,3-dichlorophenyl)benzene Chemical compound ClC1=CC=CC(C=2C(=C(Cl)C=CC=2)Cl)=C1Cl VTLYHLREPCPDKX-UHFFFAOYSA-N 0.000 description 9
- 238000010586 diagram Methods 0.000 description 6
- KENZYIHFBRWMOD-UHFFFAOYSA-N 1,2-dichloro-4-(2,5-dichlorophenyl)benzene Chemical group ClC1=CC=C(Cl)C(C=2C=C(Cl)C(Cl)=CC=2)=C1 KENZYIHFBRWMOD-UHFFFAOYSA-N 0.000 description 3
- IYZWUWBAFUBNCH-UHFFFAOYSA-N 2,6-dichlorobiphenyl Chemical compound ClC1=CC=CC(Cl)=C1C1=CC=CC=C1 IYZWUWBAFUBNCH-UHFFFAOYSA-N 0.000 description 3
- 238000007796 conventional method Methods 0.000 description 3
- 230000005405 multipole Effects 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 238000001459 lithography Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
- H03H7/38—Impedance-matching networks
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- H—ELECTRICITY
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- H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
- H03H7/01—Frequency selective two-port networks
- H03H7/0115—Frequency selective two-port networks comprising only inductors and capacitors
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
- H03H7/01—Frequency selective two-port networks
- H03H7/17—Structural details of sub-circuits of frequency selective networks
- H03H7/1741—Comprising typical LC combinations, irrespective of presence and location of additional resistors
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- H05K1/025—Impedance arrangements, e.g. impedance matching, reduction of parasitic impedance
- H05K1/0251—Impedance arrangements, e.g. impedance matching, reduction of parasitic impedance related to vias or transitions between vias and transmission lines
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- H05K1/02—Details
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- H—ELECTRICITY
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- H03H1/00—Constructional details of impedance networks whose electrical mode of operation is not specified or applicable to more than one type of network
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- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
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- H05K1/023—Reduction of cross-talk, noise or electromagnetic interference using auxiliary mounted passive components or auxiliary substances
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- H05K1/02—Details
- H05K1/0213—Electrical arrangements not otherwise provided for
- H05K1/0216—Reduction of cross-talk, noise or electromagnetic interference
- H05K1/023—Reduction of cross-talk, noise or electromagnetic interference using auxiliary mounted passive components or auxiliary substances
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- H05K1/02—Details
- H05K1/11—Printed elements for providing electric connections to or between printed circuits
- H05K1/111—Pads for surface mounting, e.g. lay-out
- H05K1/112—Pads for surface mounting, e.g. lay-out directly combined with via connections
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- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/09—Shape and layout
- H05K2201/09209—Shape and layout details of conductors
- H05K2201/09218—Conductive traces
- H05K2201/09263—Meander
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- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/09—Shape and layout
- H05K2201/09209—Shape and layout details of conductors
- H05K2201/09372—Pads and lands
- H05K2201/09454—Inner lands, i.e. lands around via or plated through-hole in internal layer of multilayer PCB
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- H05K2201/09—Shape and layout
- H05K2201/09209—Shape and layout details of conductors
- H05K2201/09654—Shape and layout details of conductors covering at least two types of conductors provided for in H05K2201/09218 - H05K2201/095
- H05K2201/09672—Superposed layout, i.e. in different planes
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- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/09—Shape and layout
- H05K2201/09209—Shape and layout details of conductors
- H05K2201/09654—Shape and layout details of conductors covering at least two types of conductors provided for in H05K2201/09218 - H05K2201/095
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- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/10—Details of components or other objects attached to or integrated in a printed circuit board
- H05K2201/10613—Details of electrical connections of non-printed components, e.g. special leads
- H05K2201/10621—Components characterised by their electrical contacts
- H05K2201/10689—Leaded Integrated Circuit [IC] package, e.g. dual-in-line [DIL]
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- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/30—Assembling printed circuits with electric components, e.g. with resistor
- H05K3/32—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits
- H05K3/34—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits by soldering
- H05K3/341—Surface mounted components
- H05K3/3421—Leaded components
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- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/40—Forming printed elements for providing electric connections to or between printed circuits
- H05K3/42—Plated through-holes or plated via connections
- H05K3/429—Plated through-holes specially for multilayer circuits, e.g. having connections to inner circuit layers
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- Filters And Equalizers (AREA)
- Control Of Motors That Do Not Use Commutators (AREA)
Description
ビア静電容量の調整
図2はビア12がビア42のパッド59を含まないこと以外は本発明の図5のビア42と実質的に同様の先行技術のビア12(図2)の断面立面図である。図3はその上部および下部リング22および24と関連する静電容量C1およびC2とその垂直導体26と関連するインダクタンスL1とを含むビア12のインピーダンスモデルである。なお、静電容量C1およびC2ならびにインダクタL1は、図7の5極フィルタに対して2ポート、3極フィルタを形成する。
ビア静電容量の分布
パッド59をビア42に付加することは、パッド59が並列静電容量C3をビアの信号経路に付加するため、ビアの高周波応答を改善するためにビアの静電容量を最小限に抑えることを目指した従来の実践とは一致しない。しかし以下に実証するように、その静電容量C3をビア42の他の部分の静電容量C1およびC2ならびにインダクタンスL1およびL2に応じて適切に調節する場合は、ビアの周波数応答特性は大幅に改善される。
ビアインダクタンスの付加
図8および9は図5のマイクロストリップ導体44および48ならびにビア42の代替型の平面図である。マイクロストリップ導体のインピーダンスは主にその幅および導体と近接の電源またはグラウンドプレーンとの間の距離の関数である。通常マイクロストリップ導体はその長さに亘って例えば50オームというような均一な特性インピーダンスを有するように設計されている。そのため通常マイクロストリップ導体は図8に示すように均一な幅を有する。図7のインピーダンスモデルはマイクロストリップ導体44および48が均一の幅であると仮定している。しかし図9に示すようにビア42に近接する部分60および62のマイクロストリップ導体44および48の幅を減少させることにより、それらの部分の大部分を誘電性にする。
相互接続埋め込みストリップライン導体用調整ビア
ビアはPCB基板の個別の埋め込み層上に形成されたストリップライン導体を相互接続するためにも利用される。PCB設計者は、PCBの端から端まで延在する貫通ビアの代わりにPCBの端から端までは延在しないブラインドまたは埋め込みビアを用いて埋め込み導体を相互接続することが多いが、それはブラインドまたは埋め込みビアが短いほど信号経路に付加する静電容量またはインダクタンスが少ないからである。しかしさまざまなPCB層に個別に穴を開けなければならないためブラインドおよび埋め込みビアの製造は貫通ビアより高価である。本発明は高周波の印加の際に埋め込みストリップライン導体を相互接続するために用いることができるように貫通ビアの帯域幅を改善する。
多数の埋め込みコンデンサを用いたビア
導体74および78の間に適切に調整されたパッド90を2つ以上設けてビア静電容量をより均等に分布させることにより帯域幅をさらに改善することが可能になる。例えば図17は本発明の代替的実施形態による図6のビア42の改良型を示す。図6においてビア42はPCB40に埋め込まれた単一の導電パッド59を含み、ビア42が提供する信号経路に沿った一点で追加の並列容量を提供するだけである。導電パッド59はビア42を調整して図7に示した5極フィルタにした。上部および下部リング52および54ならびにパッド59はそれぞれ静電容量C1、C2およびC3として作用する一方で、導体56は2つの直列インダクタL1およびL2として作用する。
Claims (20)
- プリント回路基板(PCB)上の第1の高さにある第1の導体ストリップと第2の高さにある第2の導体ストリップとの間に信号を伝えるための装置であって、
前記PCB内で垂直に延在するとともに前記第1の導体ストリップと前記第2の導体ストリップとの間に前記信号を伝えるための導電路を提供し、第1のインダクタンスを含むインピーダンスを有する導体と、
前記導体に接するとともに前記導電路に並列容量を付加する容量性手段と、
を備え、
前記第1および第2の導体ストリップの各々は、第1の幅を有する第1の導体部分と、前記第1の幅よりも小さい第2の幅を有しかつ前記第1の導体部分よりも前記導体の付近に位置する第2の導体部分とを有し、
前記第1の導体ストリップの前記第2の導体部分は、第2のインダクタンスを有し、前記第2の導体ストリップの前記第2の導体部分は、第3のインダクタンスを有し、前記第1のインダクタンス、前記第2のインダクタンス及び前記第3のインダクタンス並びに前記容量性手段は、フィルタを形成し、
前記信号の伝送時に前記導電路の周波数応答特性の帯域幅特性を最大化するために前記並列容量を前記導体のインピーダンスに応じた大きさにした装置。 - 前記導電路がチェビシェフフィルタを形成するように前記並列容量を前記導体のインピーダンスに応じた大きさにした、請求項1に記載の装置。
- 前記導電路がバターワースフィルタを形成するように前記並列容量を前記導体のインピーダンスに応じた大きさにした、請求項1に記載の装置。
- 前記信号の伝送時に前記導電路の周波数応答の帯域幅特性を最大化するために前記並列容量を前記導体のインピーダンスに応じた大きさにした、請求項1に記載の装置。
- 前記PCBが上部水平面と下部水平面とを有し、
前記第1の導体ストリップが前記上部水平面上にあり、
前記第2の導体ストリップが前記下部水平面上にあり、
前記導体が前記PCBを完全に貫通して垂直に延在し、
前記容量性手段が、
前記上面に形成され、第1の水平平坦面を有し、前記導体を前記第1の導体ストリップに導電的に接続する上部導体と、
前記下面に形成され、水平平坦面を有し、前記導体を前記第2の導体ストリップに導電的に接続する下部導体と
を備える、請求項1に記載の装置。 - 前記上部導体が前記導電路に第1の並列容量を付加し、
前記下部導体が前記導電路に第2の並列容量を付加し、
前記信号の伝送時に前記導電路の周波数応答特性の帯域幅特性を最大化するために前記第1および第2の並列容量を前記導体のインピーダンスに応じた大きさにした、請求項5に記載の装置。 - 前記容量性手段が、前記PCB内に埋め込まれた、前記第1の高さと第2の高さとの間の第3の高さにおいて前記導体に取り付けられる第1のコンデンサであって、前記信号経路に第1の並列容量を付加する第1のコンデンサを備える、請求項1に記載の装置。
- 前記第3の高さが前記第1の高さと第2の高さとの間の垂直方向の中間にある、請求項7に記載の装置。
- 前記PCBが複数の基板層を有し、
前記第1のコンデンサが、前記導体に接して前記複数の基板層のうちの一の層上の前記第3の高さに形成されるとともに第1の水平平坦面を有する第1の導体材料を備える、請求項7に記載の装置。 - 前記第1のコンデンサが前記第1の導体材料の前記第1の平坦面に近接して存在する第2の水平平坦面を有する第2の導体材料をさらに備える、請求項9に記載の装置。
- 前記第1の導体材料が前記導体を取り囲んでいる、請求項8に記載の装置。
- 前記PCBが上部水平面と下部水平面とを有し、
前記第1の導体ストリップが前記上部水平面上にあり、
前記第2の導体ストリップが前記下部水平面上にあり、
前記導体が前記PCBを完全に貫通して垂直に延在し、
前記少なくとも1つのコンデンサが、
前記上面に形成され、水平平坦面を有し、前記導体を前記第1の導体ストリップに導電的に接続する上部導体と、
前記下面に形成され、水平平坦面を有し、前記導体を前記第2の導体ストリップに導電的に接続する下部導体と
を備える、請求項7に記載の装置。 - 水平平坦面を有する上部導体が前記導電路に第2の並列容量を提供し、
水平平坦面を有する下部導体が前記導電路に第3の並列容量を提供し、
前記信号の伝送時に前記導電路の周波数応答特性の帯域幅特性を最大化するために前記第1、第2および第3の並列容量を前記導体のインピーダンスに応じた大きさにした、請求項12に記載の装置。 - 前記信号の伝送時に前記導電路がチェビシェフフィルタを形成するように前記第1、第2および第3の並列容量を前記導体のインピーダンスに応じた大きさにした、請求項13に記載の装置。
- 前記信号の伝送時に前記導電路がバターワースフィルタを形成するように前記第1、第2および第3の並列容量を前記導体のインピーダンスに応じた大きさにした、請求項13に記載の装置。
- 前記信号の伝送時に前記導電路が最大の帯域幅を有するように前記第1、第2および第3の並列容量を前記導体のインピーダンスに応じた大きさにした、請求項13に記載の装置。
- 前記PCBが上部水平面と下部水平面とを有し、
前記第1の高さが前記上部水平面の下方にあり、
前記第2の高さが前記下部水平面の上方にあり、
前記導体が前記PCBを完全に貫通して垂直に延在し、
前記容量性手段が、
前記上面に形成され、水平平坦面を有し、前記導体を前記第1の導体ストリップに導電的に接続する上部導体と、
前記下面に形成され、水平平坦面を有し、前記導体を前記第2の導体ストリップに導電的に接続する下部導体と
を備える、請求項7に記載の装置。 - 前記上部導体が前記導電路に第2の並列容量を付加し、
前記下部導体が前記導電路に第3の並列容量を付加し、
前記信号の伝送時に前記導電路の周波数応答特性の帯域幅特性を最大化するために前記第1、第2および第3の並列容量を前記導体のインピーダンスに応じた大きさにした、請求項17に記載の装置。 - 前記信号の伝送時に前記導電路が最大の帯域幅を有するように前記第1、第2および第3の並列容量を前記導体のインピーダンスに応じた大きさにした、請求項18に記載の装置。
- 前記容量性手段が、前記PCB内に埋め込まれるとともに前記第1の高さと第2の高さとの間の高さにおいて前記導体に取り付けられた複数のコンデンサを備える、請求項1に記載の装置。
Applications Claiming Priority (2)
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US09/761,352 US6538538B2 (en) | 1999-02-25 | 2001-01-16 | High frequency printed circuit board via |
PCT/US2002/001212 WO2002058234A2 (en) | 2001-01-16 | 2002-01-15 | High frequency printed circuit board via |
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Publication Number | Publication Date |
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JP2004521536A JP2004521536A (ja) | 2004-07-15 |
JP2004521536A5 JP2004521536A5 (ja) | 2007-03-22 |
JP4336497B2 true JP4336497B2 (ja) | 2009-09-30 |
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US (2) | US6538538B2 (ja) |
EP (1) | EP1354502B1 (ja) |
JP (1) | JP4336497B2 (ja) |
KR (2) | KR100890128B1 (ja) |
CN (2) | CN100512593C (ja) |
AU (1) | AU2002235384A1 (ja) |
DE (1) | DE60234014D1 (ja) |
TW (1) | TW525414B (ja) |
WO (1) | WO2002058234A2 (ja) |
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-
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- 2002-01-15 WO PCT/US2002/001212 patent/WO2002058234A2/en active Application Filing
- 2002-01-15 KR KR1020037009519A patent/KR100890128B1/ko not_active IP Right Cessation
- 2002-01-15 CN CNA2007101419582A patent/CN101340781A/zh active Pending
- 2002-01-15 KR KR1020087003839A patent/KR100945401B1/ko not_active IP Right Cessation
- 2002-01-15 EP EP02701987A patent/EP1354502B1/en not_active Expired - Lifetime
- 2002-01-15 JP JP2002558608A patent/JP4336497B2/ja not_active Expired - Fee Related
- 2002-01-15 DE DE60234014T patent/DE60234014D1/de not_active Expired - Lifetime
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CN101340781A (zh) | 2009-01-07 |
KR20080018288A (ko) | 2008-02-27 |
EP1354502B1 (en) | 2009-10-14 |
WO2002058234A3 (en) | 2002-10-24 |
AU2002235384A1 (en) | 2002-07-30 |
US6661316B2 (en) | 2003-12-09 |
EP1354502A2 (en) | 2003-10-22 |
KR20030071826A (ko) | 2003-09-06 |
CN100512593C (zh) | 2009-07-08 |
KR100945401B1 (ko) | 2010-03-04 |
DE60234014D1 (de) | 2009-11-26 |
WO2002058234A2 (en) | 2002-07-25 |
TW525414B (en) | 2003-03-21 |
US20020130737A1 (en) | 2002-09-19 |
US20030080835A1 (en) | 2003-05-01 |
JP2004521536A (ja) | 2004-07-15 |
US6538538B2 (en) | 2003-03-25 |
CN1531841A (zh) | 2004-09-22 |
KR100890128B1 (ko) | 2009-03-20 |
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