DE2738129A1 - Signal distortion suppression device - has printed circuit card conductors on both sides arranged to provide suppression - Google Patents
Signal distortion suppression device - has printed circuit card conductors on both sides arranged to provide suppressionInfo
- Publication number
- DE2738129A1 DE2738129A1 DE19772738129 DE2738129A DE2738129A1 DE 2738129 A1 DE2738129 A1 DE 2738129A1 DE 19772738129 DE19772738129 DE 19772738129 DE 2738129 A DE2738129 A DE 2738129A DE 2738129 A1 DE2738129 A1 DE 2738129A1
- Authority
- DE
- Germany
- Prior art keywords
- conductor
- conductors
- printed circuit
- signal distortion
- circuit card
- 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.)
- Withdrawn
Links
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K9/00—Screening of apparatus or components against electric or magnetic fields
- H05K9/0007—Casings
- H05K9/002—Casings with localised screening
- H05K9/0039—Galvanic coupling of ground layer on printed circuit board [PCB] to conductive casing
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/0213—Electrical arrangements not otherwise provided for
- H05K1/0216—Reduction of cross-talk, noise or electromagnetic interference
- H05K1/0228—Compensation of cross-talk by a mutually correlated lay-out of printed circuit traces, e.g. for compensation of cross-talk in mounted connectors
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/0213—Electrical arrangements not otherwise provided for
- H05K1/0216—Reduction of cross-talk, noise or electromagnetic interference
- H05K1/0218—Reduction of cross-talk, noise or electromagnetic interference by printed shielding conductors, ground planes or power plane
- H05K1/0219—Printed shielding conductors for shielding around or between signal conductors, e.g. coplanar or coaxial printed shielding conductors
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- 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
- H05K2201/09—Shape and layout
- H05K2201/09209—Shape and layout details of conductors
- H05K2201/09218—Conductive traces
- H05K2201/09254—Branched layout
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- 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
- H05K2201/10227—Other objects, e.g. metallic pieces
- H05K2201/10363—Jumpers, i.e. non-printed cross-over connections
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Structure Of Printed Boards (AREA)
Abstract
Description
Elektrische BaueinheitElectrical assembly
Die Erfindung betrifft eine elektrische Baueinheit gemäß dem Oberbegriff des Sciiutzanspruchs 1.The invention relates to an electrical assembly according to the preamble of the protection claim 1.
Derartige Baueinheiten werden dazu verwendet, einem Verbraucher ein Signal über größere Entfernungen zuzuführen. Dabei tritt häufig das Problem auf, daß durch die vom Verbraucher zur Signalquelle zurückführende Leitung, die in der Regel auf einem Bezugspotential liegt, auf dem flächenhaften Träger eine Leiterschleife entsteht, die besonders anfällig gegenüber Einstreuungen von Wechselfeldern ist. Dadurch kann sehr leicht das dem Verbraucher zugeführte Signal gestört werden.Such units are used to a consumer To apply the signal over greater distances. The problem often arises that through the line leading back from the consumer to the signal source, which is in the Usually on a reference potential, a conductor loop is placed on the planar support arises, which is particularly susceptible to interferences from alternating fields. As a result, the signal supplied to the consumer can be disturbed very easily.
Der Neuerung liegt daher die Aufgabe zugrunde, eine elektrische Baueinheit der oben genannten Art zu erstellen, die so ausgebildet ist, daß die erwähnten Störungen vermieden bzw. vermindert werden.The innovation is therefore based on the task of an electrical assembly of the type mentioned above, which is designed in such a way that the disturbances mentioned avoided or reduced.
Diese Aufgabe ist gemäß der Neuerung durch eine elektrische Baueinheit gemäß dem kennzeichnenden Teil des Schutzanspruchs 1 gelöst.According to the innovation, this task is through an electrical component solved according to the characterizing part of claim 1.
Die Vorteile der Neuerung sind insbesondere darin zu sehen, daß eine wirkungsvolle Unterdrückung der Störungen durch eine geeignete Ausführung der Leiterbahnen ervielt wird, so daß die elektrische Baueinheit nicht mit zusätzlichen Mitteln zur Abschirmung versehen werden muß, die auch die Bauhöhe vergrößern würden. Die Neuerung erlaubt daher, die Störungen zu beseitigen, ohne dafür den Platzbedarf für die elektrische Baueinheit zu vergrößern.The advantages of the innovation are to be seen in particular in the fact that a effective suppression of interference through a suitable design of the conductor tracks is achieved, so that the electrical assembly does not need additional means for Shielding must be provided, which would also increase the overall height. The innovation therefore allows to eliminate the interference without taking up the space for the electrical To enlarge unit.
Eine Ausführungsbeispiel der Neuerung ist in der Zeichnung dargestellt und soll im folgenden näher erläutert werden.An embodiment of the innovation is shown in the drawing and will be explained in more detail below.
Von einer Baueinheit, die als Träger eine gedruckte Schaltungsplatte 1 aufweist, sind schematisch nur ein erster Leiter 2, der einen nicht dargestellten Verbraucher mit einem elektrischen Signal versorgt, und ein zweiter Leiter 3 dargestellt, der vom Verbraucher zur Signalquelle zurückführL. Die Anschlüsse des ersten gedruckten Leiters 2 und des zweiten gedruckten Leiters 3 für den Verbraucher bzw. die Signalquelle sind durch gedruckte Randkontakte 4 bzw. 5 gebildet.From an assembly that supports a printed circuit board 1, only a first conductor 2, the one not shown, are schematically shown Consumer supplied with an electrical signal, and a second conductor 3 shown, which leads back from the consumer to the signal source. The connections of the first printed Conductor 2 and the second printed conductor 3 for the consumer or the signal source are formed by printed edge contacts 4 and 5, respectively.
Zur Vermeidung von Störungen des Signals in dem ersten Leiter 4, die durch sich in der durch den ersten Leiter 4 und den zweiten Leiter 5 über den Verbraucher und die Signalquelle gebildeten Leiterschleife auswirkenden magnetischen Störfelder entstehen können, ist der zweite Leiter 3 in zwei Zweigleiter 3 a, 3 b verzweigt. Die Zweigleitungen 3 a, 3 b verlaufen parallel zu dem ersten Leiter 4 und sollen möglichst symmetrisch zu dem ersten Leiter 4 ausgebildet sein. Ebenso ist es vorteilhaft, wenn sich zwischen dem ersten Leiter 4 und den Zweigleitern 3 a, 3 b ein möglichst geringer Abstand befindet.To avoid interference with the signal in the first conductor 4, the through itself in through the first conductor 4 and the second conductor 5 through the consumer and the signal source formed conductor loop affecting magnetic interference fields can arise, the second conductor 3 is branched into two branch conductors 3 a, 3 b. The branch lines 3 a, 3 b run parallel to the first conductor 4 and should be designed as symmetrical as possible to the first conductor 4. It is also advantageous if there is a possible between the first conductor 4 and the branch conductors 3 a, 3 b small distance.
Zu der in dem dargestellten Ausführungsbeispiel notwendigen Überbrückung des ersten Leiters durch den zweiten Leiter 3 sind beispielsweise Drahtbrücken 6 geeignet. Ebenso ist es jedoch denkbar, auch diese Uberbrückung als gedruckte Leiterbahn auszuführen, wenn die entsprechende Stelle des ersten Leiters 4 vor dem Drucken der tiberbrückung isolierend abgedeckt worden ist. Es ist klar, daß die Überbrückungen entfallen können, wenn die Anschlüsse zu den beiden Leitern 2,3 nicht durch Randkontakte 4,5, sondern auf der Platte, beispielsweise durch Stecker, erfolgen. In diesem Fall kann der zweite Leiter 3 um den ersten Leiter 2 herumgeführt werden.To the bridging necessary in the illustrated embodiment of the first conductor through the second conductor 3 are, for example, wire bridges 6 suitable. However, it is also conceivable to also use this bridging as a printed conductor track execute when the corresponding point of the first conductor 4 before printing the bridge has been covered with insulating material. It is clear that the bridges can be omitted if the connections to the two conductors 2, 3 are not through edge contacts 4.5, but on the plate, for example by means of a plug. In this case the second conductor 3 can be guided around the first conductor 2.
Es ist ersichtlich, daß zur Ausführung der Neueruug kein zusätzlicher Aufwand erforderlich ist, da das Aufbringen der Verzweigung 3 a, 3 b des zweiten Leiters 3 in demselben Arbeitsgang erfolgen kann, wie das Aufbringen der übrigen Leiter der elektrischen Baueinheit.It can be seen that no additional Effort is required because the application of the branch 3 a, 3 b of the second Head 3 can be done in the same operation as the application of the rest Head of the electrical assembly.
L e e r s e i t eL e r s e i t e
Claims (3)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19772738129 DE2738129A1 (en) | 1977-08-24 | 1977-08-24 | Signal distortion suppression device - has printed circuit card conductors on both sides arranged to provide suppression |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19772738129 DE2738129A1 (en) | 1977-08-24 | 1977-08-24 | Signal distortion suppression device - has printed circuit card conductors on both sides arranged to provide suppression |
Publications (1)
Publication Number | Publication Date |
---|---|
DE2738129A1 true DE2738129A1 (en) | 1979-03-01 |
Family
ID=6017166
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19772738129 Withdrawn DE2738129A1 (en) | 1977-08-24 | 1977-08-24 | Signal distortion suppression device - has printed circuit card conductors on both sides arranged to provide suppression |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE2738129A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2005099202A2 (en) * | 2004-03-31 | 2005-10-20 | Silicon Laboratories Inc. | Magnetically differential input |
US7098742B2 (en) | 2004-04-30 | 2006-08-29 | Silicon Laboratories Inc. | Differential/single-ended input stage |
-
1977
- 1977-08-24 DE DE19772738129 patent/DE2738129A1/en not_active Withdrawn
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2005099202A2 (en) * | 2004-03-31 | 2005-10-20 | Silicon Laboratories Inc. | Magnetically differential input |
WO2005099202A3 (en) * | 2004-03-31 | 2005-12-15 | Silicon Lab Inc | Magnetically differential input |
KR100806417B1 (en) * | 2004-03-31 | 2008-02-21 | 실리콘 래버래토리즈 인코포레이티드 | Magnetically differential input |
US7536161B2 (en) | 2004-03-31 | 2009-05-19 | Silicon Laboratories Inc. | Magnetically differential input |
US8086211B2 (en) | 2004-03-31 | 2011-12-27 | Silicon Laboratories Inc. | Magnetically differential input |
CN1939103B (en) * | 2004-03-31 | 2012-07-04 | 硅实验室公司 | Magnetically differential input |
US7098742B2 (en) | 2004-04-30 | 2006-08-29 | Silicon Laboratories Inc. | Differential/single-ended input stage |
US7414480B2 (en) | 2004-04-30 | 2008-08-19 | Silicon Laboratories Inc. | Differential/single-ended input stage |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OD | Request for examination | ||
OF | Willingness to grant licences before publication of examined application | ||
8139 | Disposal/non-payment of the annual fee |