DE19738887A1 - Method for passive protection against high frequency radiation - Google Patents
Method for passive protection against high frequency radiationInfo
- Publication number
- DE19738887A1 DE19738887A1 DE1997138887 DE19738887A DE19738887A1 DE 19738887 A1 DE19738887 A1 DE 19738887A1 DE 1997138887 DE1997138887 DE 1997138887 DE 19738887 A DE19738887 A DE 19738887A DE 19738887 A1 DE19738887 A1 DE 19738887A1
- Authority
- DE
- Germany
- Prior art keywords
- protection against
- energy
- high frequency
- radiation
- frequency radiation
- 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.)
- Ceased
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
- H05K9/0073—Shielding materials
- H05K9/0081—Electromagnetic shielding materials, e.g. EMI, RFI shielding
- H05K9/0083—Electromagnetic shielding materials, e.g. EMI, RFI shielding comprising electro-conductive non-fibrous particles embedded in an electrically insulating supporting structure, e.g. powder, flakes, whiskers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q17/00—Devices for absorbing waves radiated from an antenna; Combinations of such devices with active antenna elements or systems
Abstract
Description
Bei elektrischen und elektronischen Geräten besteht die Aufgabe, Störstrahlung nach außen zu vermindern bzw. ganz zu vermeiden sowie den Schutz vor eingestrahlter HF-Energie zu gewährleisten. Dies wird bekanntermaßen durch Unterbringung HF erzeugender oder vor HF zu schützender Baugruppen in verschiedenen Metallkammern realisiert. Der dazu erforderliche Aufwand ist jedoch relativ hoch und wirtschaftlich nicht immer gerechtfertigt.With electrical and electronic devices, the task is To reduce or avoid interference radiation to the outside as well as the To ensure protection against radiated RF energy. this will As is known, by placing HF before or before HF protective assemblies realized in different metal chambers. The one for that However, the effort required is relatively high and is not always economical justified.
Der im Patentanspruch 1 angegebenen Erfindung liegen folgende Probleme
zugrunde:
The invention specified in claim 1 is based on the following problems:
- - Schutz vor Außenstrahlung zur Erhöhung innerer elektromagnetischer Sicherheitsabstände- Protection against external radiation to increase internal electromagnetic Safety distances
- - Schutz vor Innenraum-Reflektionen von innerer HF-Energie- Protection against indoor reflections from internal RF energy
- - Schutz vor HF-Strahlungsresonanzen- Protection against RF radiation resonances
- - Schutz vor inneren Feldverzerrungen- Protection against internal field distortions
- - Schirmdämfungshilfsmittel zur Erhöhung der HF-Dichtheit von Gehäusen.- Shielding aids to increase the HF tightness of housings.
Diese Probleme werden durch das in Patentanspruch 1 aufgeführte Verfahren gelöst.These problems are solved by the method listed in claim 1 solved.
Die mit der Erfindung erzielten Vorteile beim Vorhandensein von HF-Quellen im
Inneren von Gehäusen sind:
The advantages achieved by the invention in the presence of RF sources inside housings are:
- - es werden im Inneren eines Metallgehäuses Feldreflexionen und Feldresonanzen vermieden- There will be field reflections and inside a metal housing Field resonances avoided
- - nach außen erhöht sich der Schirmdämfungswert- the shielding value increases to the outside
- - Effekte wie nicht gewollte Feldverzerrung, Feldstreuung und Ausbreitung stehender Wellen werden vermieden - Effects such as unwanted field distortion, field scatter and spread standing waves are avoided
- - die Störstrahlungsentfaltung nach außen wird vermindert bzw. ganz verhindert.- The interference radiation to the outside is reduced or completely prevented.
Das Verfahren nach Anspruch 1 wird in folgenden Bereichen angewandt:
The method according to claim 1 is used in the following areas:
- - als innerer Schutzmechanismus vor ungewollter HF Energie- As an internal protection mechanism against unwanted HF energy
- - als EMV-Design-Hilfsmittel- as an EMC design aid
- - als Hilfe bei der Realisierung des Personenschutzes im Sinne des BlmSchV (Bundesimmissionschutzgesetz vom 08.11.1996 und den Aktualisierungen)- as an aid in the implementation of personal protection within the meaning of the BlmSchV (Federal Immission Control Act of November 8, 1996 and the updates)
- - anderen technischen und wissenschaftlichen Schutzbereichen.- other technical and scientific protection areas.
Das Verfahren zum passiven Schutz innerer elektrisch/elektronischer Baugruppen und Bauelemente in geschlossenen und halboffenen Gehäusen ist auch anwendbar auf eine Erhöhung der Gesamtschirmwirkung, hervorgerufen durch äußere elektromagnetische Einwirkung. Im Sinne einer Mehrfachdämpfung durch äußeres Auftragen einer HF-Absorptionsschicht, mittlerer Metallschicht eines Gehäuses und innerer HF-Absorptionsschicht partiell oder als Vollauskleidung ist eine hohe Schirmdämpfung und innere Sicherheit vor HF-Feldeinkopplung zu erreichen.The procedure for passive protection of internal electrical / electronic Assemblies and components in closed and semi-open housings also applicable to an increase in the overall screen effect by external electromagnetic influence. In the sense of Multiple attenuation by external application of an RF absorption layer, middle metal layer of a housing and inner HF absorption layer partially or as a full lining is a high shielding attenuation and inner To achieve security against RF field coupling.
Das von einer beliebigen HF-Quelle ausgesandte Signal im Inneren wie auch im Äußeren von Gehäusen wird in einem breiten Frequenzbereich absorbiert und ein technischer Schutz vor den verschiedensten Kopplungsmechanismen erzielt.The signal emitted from any RF source inside as well outside of housings is absorbed in a wide frequency range and technical protection against a wide range of coupling mechanisms achieved.
Es werden als Medienverbund unterschiedliche Stoffe in den verschiedensten
Aggregatzuständen und Mischungen einsetzt. Dabei werden HF-Absorberarten
wie
As a media association, different substances are used in the most varied aggregate states and mixtures. RF absorber types such as
- - Ferrit Absorber- Ferrite absorber
- - Schaumstoffabsorber- foam absorber
- - Hybridabsorber- hybrid absorber
- - mesoskopische Absorber- mesoscopic absorbers
- - Ferritgitterabsorber- Ferrite grid absorber
- - Laminatabsorber- Laminate absorber
- - andere nicht aufgeführte HF-Absorber- other HF absorbers not listed
verwandt.related.
Weitere Hilfsstoffe (Verbindungsstoffe, innerte Trägermaterialien, metallisierte Klebstoffe usw.) können im Gesamtverbundabsorptionswerkstoff eingesetzt werden.Other auxiliaries (connecting materials, inner carrier materials, metallized Adhesives, etc.) can be used in the overall composite absorption material become.
Claims (2)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1997138887 DE19738887A1 (en) | 1997-09-05 | 1997-09-05 | Method for passive protection against high frequency radiation |
DE1997146552 DE19746552A1 (en) | 1997-09-05 | 1997-10-22 | Passive method of protecting against high frequency radiation |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1997138887 DE19738887A1 (en) | 1997-09-05 | 1997-09-05 | Method for passive protection against high frequency radiation |
Publications (1)
Publication Number | Publication Date |
---|---|
DE19738887A1 true DE19738887A1 (en) | 1999-03-11 |
Family
ID=7841327
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE1997138887 Ceased DE19738887A1 (en) | 1997-09-05 | 1997-09-05 | Method for passive protection against high frequency radiation |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE19738887A1 (en) |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3811571A1 (en) * | 1988-03-31 | 1989-10-19 | System Elektronik Gmbh Berlin | Chamber whose internal walls are fitted with plastic bodies for the purpose of absorbing electromagnetic waves |
DE4201871A1 (en) * | 1991-03-07 | 1992-09-10 | Feldmuehle Ag Stora | COMPONENT FOR ABSORPTION OF ELECTROMAGNETIC SHAFT AND ITS USE |
DE4205803A1 (en) * | 1992-02-26 | 1993-09-02 | Deutsche Aerospace | Electromagnetic compatible chamber - comprises inner walls coated with resistance material |
DE4324916A1 (en) * | 1993-07-24 | 1995-01-26 | Hugo Wolfgang Fiessler | Moulded element for absorption of electromagnetic waves |
US5443900A (en) * | 1991-09-10 | 1995-08-22 | Kansai Paint Co., Ltd. | Electromagnetic wave absorber |
US5583318A (en) * | 1993-12-30 | 1996-12-10 | Lucent Technologies Inc. | Multi-layer shield for absorption of electromagnetic energy |
DE19525636A1 (en) * | 1995-07-14 | 1997-01-16 | Advanced Ferrite Tech | Wall lining for absorbing electromagnetic waves - has sheet of ferrite material with side facing wall coated with resistive material |
DE19600230A1 (en) * | 1996-01-05 | 1997-07-17 | Eichel Ruediger Albert | Absorption wall for electromagnetic radiation or electro-smog e.g. for HV lines and RF transmitters for radio, TV or mobile phones |
-
1997
- 1997-09-05 DE DE1997138887 patent/DE19738887A1/en not_active Ceased
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3811571A1 (en) * | 1988-03-31 | 1989-10-19 | System Elektronik Gmbh Berlin | Chamber whose internal walls are fitted with plastic bodies for the purpose of absorbing electromagnetic waves |
DE4201871A1 (en) * | 1991-03-07 | 1992-09-10 | Feldmuehle Ag Stora | COMPONENT FOR ABSORPTION OF ELECTROMAGNETIC SHAFT AND ITS USE |
US5443900A (en) * | 1991-09-10 | 1995-08-22 | Kansai Paint Co., Ltd. | Electromagnetic wave absorber |
DE4205803A1 (en) * | 1992-02-26 | 1993-09-02 | Deutsche Aerospace | Electromagnetic compatible chamber - comprises inner walls coated with resistance material |
DE4324916A1 (en) * | 1993-07-24 | 1995-01-26 | Hugo Wolfgang Fiessler | Moulded element for absorption of electromagnetic waves |
US5583318A (en) * | 1993-12-30 | 1996-12-10 | Lucent Technologies Inc. | Multi-layer shield for absorption of electromagnetic energy |
DE19525636A1 (en) * | 1995-07-14 | 1997-01-16 | Advanced Ferrite Tech | Wall lining for absorbing electromagnetic waves - has sheet of ferrite material with side facing wall coated with resistive material |
DE19600230A1 (en) * | 1996-01-05 | 1997-07-17 | Eichel Ruediger Albert | Absorption wall for electromagnetic radiation or electro-smog e.g. for HV lines and RF transmitters for radio, TV or mobile phones |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OM8 | Search report available as to paragraph 43 lit. 1 sentence 1 patent law | ||
8122 | Nonbinding interest in granting licenses declared | ||
AG | Has addition no. |
Ref country code: DE Ref document number: 19746552 Format of ref document f/p: P |
|
8110 | Request for examination paragraph 44 | ||
8131 | Rejection |