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 suppression

Info

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Withdrawn
Application number
DE19772738129
Other languages
German (de)
Inventor
Reinhard Dipl Ing Laue
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Blaupunkt Werke GmbH
Original Assignee
Blaupunkt Werke GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Blaupunkt Werke GmbH filed Critical Blaupunkt Werke GmbH
Priority to DE19772738129 priority Critical patent/DE2738129A1/en
Publication of DE2738129A1 publication Critical patent/DE2738129A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K9/00Screening of apparatus or components against electric or magnetic fields
    • H05K9/0007Casings
    • H05K9/002Casings with localised screening
    • H05K9/0039Galvanic coupling of ground layer on printed circuit board [PCB] to conductive casing
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00Printed circuits
    • H05K1/02Details
    • H05K1/0213Electrical arrangements not otherwise provided for
    • H05K1/0216Reduction of cross-talk, noise or electromagnetic interference
    • H05K1/0228Compensation of cross-talk by a mutually correlated lay-out of printed circuit traces, e.g. for compensation of cross-talk in mounted connectors
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00Printed circuits
    • H05K1/02Details
    • H05K1/0213Electrical arrangements not otherwise provided for
    • H05K1/0216Reduction of cross-talk, noise or electromagnetic interference
    • H05K1/0218Reduction of cross-talk, noise or electromagnetic interference by printed shielding conductors, ground planes or power plane
    • H05K1/0219Printed shielding conductors for shielding around or between signal conductors, e.g. coplanar or coaxial printed shielding conductors
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2201/00Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/09Shape and layout
    • H05K2201/09209Shape and layout details of conductors
    • H05K2201/09218Conductive traces
    • H05K2201/09254Branched layout
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2201/00Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/10Details of components or other objects attached to or integrated in a printed circuit board
    • H05K2201/10227Other objects, e.g. metallic pieces
    • H05K2201/10363Jumpers, 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

The possibility of signal distortion in conductors on printed circuit cards is minimised by using parallel conductors. A printed circuit card(1) has one conductor(2) for signals transmitted in one direction and another conductor system(3a, 3b) for signals transmitted in the other direction. The pair of conductors are arranged symmetrically displaced from the other(2). Bridging strips(6) provide the necessary connection. Each conductor is terminated by edge connectors(4, 5). The conductors on the card between the edge connectors are straight and parallel.

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)

Schutzanspriiche 1. Elektrische Baueinheit mit einer auf einen flächenhaften Träger gedruckten Leitung, bestehend aus einem ersten, einem Verbraucher ein Signal zuführenden Leiter und einem zweiten, vom Verbraucher zurückführenden Leiter, dadurch gekennzeichnet, daß sich auf dem flächenhaften Träger (1) der zweite Leiter (3) verzweigt und auf beiden Seiten des ersten Leiters (2) parallel zu ihm verläuft. Protection claims 1. Electrical assembly with one on one planar Carrier printed line consisting of a first, a consumer a signal feeding conductor and a second conductor returning from the consumer, thereby characterized in that the second conductor (3) is on the planar support (1) branches and runs parallel to him on both sides of the first conductor (2). 2. Elektrische Baueinheit nach Anspruch 1, dadurch gekennzeichnet, daß die beiden Zweigleiter (3 a, 3 b) symmetrisch zu dem ersten Leiter (2) verlaufen.2. Electrical assembly according to claim 1, characterized in that that the two branch conductors (3 a, 3 b) run symmetrically to the first conductor (2). 3. Elektrische Baueinheit nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die beiden Zweigleiter (3 a, 3 b) unmittelbar an dem ersten Leiter (2) angeordnet sind.3. Electrical assembly according to claim 1 or 2, characterized in that that the two branch conductors (3 a, 3 b) are arranged directly on the first conductor (2) are.
DE19772738129 1977-08-24 1977-08-24 Signal distortion suppression device - has printed circuit card conductors on both sides arranged to provide suppression Withdrawn DE2738129A1 (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (8)

* Cited by examiner, † Cited by third party
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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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