DE1441626A1 - Wraps for high frequency receivers and high frequency transmitters - Google Patents

Wraps for high frequency receivers and high frequency transmitters

Info

Publication number
DE1441626A1
DE1441626A1 DE19641441626 DE1441626A DE1441626A1 DE 1441626 A1 DE1441626 A1 DE 1441626A1 DE 19641441626 DE19641441626 DE 19641441626 DE 1441626 A DE1441626 A DE 1441626A DE 1441626 A1 DE1441626 A1 DE 1441626A1
Authority
DE
Germany
Prior art keywords
soul
dielectric
envelope
high frequency
arrangement
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Withdrawn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
DE19641441626
Other languages
German (de)
Other versions
DE1441626B2 (en
Inventor
Siegfried Zisler
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.)
Thales SA
Original Assignee
CSF Compagnie Generale de Telegraphie sans Fil SA
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 CSF Compagnie Generale de Telegraphie sans Fil SA filed Critical CSF Compagnie Generale de Telegraphie sans Fil SA
Publication of DE1441626A1 publication Critical patent/DE1441626A1/en
Publication of DE1441626B2 publication Critical patent/DE1441626B2/de
Withdrawn legal-status Critical Current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
    • H05K9/0073Shielding materials
    • H05K9/0081Electromagnetic shielding materials, e.g. EMI, RFI shielding
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q17/00Devices for absorbing waves radiated from an antenna; Combinations of such devices with active antenna elements or systems
    • H01Q17/008Devices for absorbing waves radiated from an antenna; Combinations of such devices with active antenna elements or systems with a particular shape

Description

. Egon Prinz Dr. Gertrud Hauset DipL-Jr-, >V:.i.j Leiser Mmchen-Pasing, den 27.Febr,1964. Egon Prince Dr. Gertrud Hauset DipL-Jr-,> V: .ij Leiser Mmchen-Pasing, February 27, 1964

traces rrrr^fraBe 19 1441626 traces rrrr ^ fraBe 19 1441626

Manchen I17078 I^IO*OSome I 17078 I ^ IO * O Unser Zeichen» C 1929Our symbol »C 1929

CS? -COPr1AGFIE GENESALE DE TEL1SBAPHIE SAUS PIL 79» Bouievurd Bausamann, Paria/FrankreichCS? -COPr 1 AGFIE GENESALE DE TEL1SBAPHIE SAUS PIL 79 »Bouievurd Bausamann, Paria / France

Umhüllungen für Höchstfrequensempfänger und HöchetfrequenssenderCoverings for high frequency receivers and High-frequency transmitter

Die Erfindung betrifft Umhüllungen für Höchetfrequenzsende-und-Empfangaanordnungen. The invention relates to casings for high frequency transmission and reception arrangements.

Es ist bekannt, die Reflexion an der Oberfläche eines dielektrischen oder magnetischen Materials in einea breiten Betriebsfrequenzbereich dadurch zu verringern,It is known that the reflection on the surface of a dielectric or magnetic material in a to reduce the wide operating frequency range by

U dass ein Material gebildet viid, bsi welchem die Änderungen der Dielektrizitätskonstante derart kontinuierlich sind, dass ein plötzlicher Übergang zwischen dem Wellenwiderstand der Luft und demjenigen der Umhüllung vermieden wird. Mit diesem Verfahren konnten bisher nur sehr zerbrechliche Umhüllungen erhalten werden, weil die allmählichen Änderungen bisher nur mit sehr stark lufthaltigen Produkten realisiert werden konnten« U viid that a material formed, wherein the changes of the dielectric constant bsi continuously such are that a sudden transition between the characteristic impedance of the air and that the enclosure is avoided. With this process, it was previously only possible to obtain very fragile casings, because the gradual changes could only be implemented with products that contain very high levels of air. "

Dae BAD QRiGlNAL 909810/0377 Dae BAD QRiGlNAL 909810/0377

1H16261H1626

Das Ziel der Erfindung ist die Schaffung eines neuartigen Aufbau· derartiger Umhüllungen in der Weise, dass die Beflexion der Höchetfrequenzwellen in einem breiten Betriebsfrequen*T&er*leh vernaehlässigbar gemacht wird, wobei aber «in» gute mechanische Festigkeit der Umhüllung erhalten wird.The object of the invention is to provide a novel S TRUCTURE · such enclosures in the way is that the Beflexion the Höchetfrequenzwellen in a wide Betriebsfrequen T he leh * * made vernaehlässigbar, but good "to" mechanical strength of the casing is obtained.

Erfindungagemäss verwendet man eine dielektrische Schicht, di« aus mehreren aufeinanderfolgenden homogenen Schichten mit verschiedenen ^Dielektrizitätskonstanten gebildet ist5 man erreicht dadurch die Anpassung des Wellenwiderstands der Luft an denjenigen der Umhüllung durch eine Folge von "Impedanawandlern1' in analoger Weise,-wie bei leitungen mit Kombinationen von ^iertelwellenlängenabschnitten·According to the invention, a dielectric layer is used, which is formed from several successive homogeneous layers with different dielectric constants5. In this way, the characteristic impedance of the air is matched to that of the envelope by a sequence of "impedance converters 1 " in an analogous manner, as in the case of lines with Combinations of quarter-wavelength segments

Die Erfindung wird an Hand der Zeichnung beispielshalber erläutert. Parin seigentThe invention is illustrated by way of example with reference to the drawing explained. Parin owns

Fig.1 ein Ausführungsbeispiel einer gemäss der Erfindung : ausgeführten Umhüllung mit einer dielektrischen Seele und ·^1 shows an embodiment of a according to the invention: Serving executed with a dielectric core and · ^

Fig»2 »in anderes Ausführungsbeispiel einer gemäss der Erfindung ausgeführten Umhüllung mit einer metallischen Seele·FIG. 2 shows another exemplary embodiment according to FIG Invention executed casing with a metallic core

90 98 10/037 7 -90 98 10/037 7 -

Fig«1 neigt dae dielektrische Material A, das die Seele der Umhüllung bildet, und die Sc ichten B, C-, D sowie die damit gleichartigen Schichten B', C bzw. D1 , welche die Impedanzwandler gemäes der Erfindung bilden-. Dabei irt angenommen, dass die Umhüllung A von Luft umspült ist*Fig. 1 inclines the dielectric material A, which forms the core of the envelope, and the layers B, C, D and the layers B ', C and D 1 , which are similar therewith, which form the impedance converter according to the invention. It is assumed that the envelope A is surrounded by air *

Wenn beispielsweise das Material A die Dielektrizitätskonstante 4 hat (fall einer Radarkuppel aus Schichtglas )For example, if material A has a dielectric constant of 4 (in the case of a radome made of laminated glass)

sind ohne Anpassung die durch Reflexion hervorgerufenen Leistungsverluate in der GrossenOrdnung von 40#. Mit einem Wandler aus drei Abschnitten und den Dielektrizitätskonstanten t.«!· fco und ^3 > die beiaPielsweiae £ϋ? B und B» den Wert I1 « 2,8,für G und C der, Wert I2* und für D und D* den Wert £.,« 1,4 haben, werden diese Verluste in einem Bereich, dessen Grenzfrequenzen in Verhältnis 4 zueinander stehen,auf 2^ herabgesetzt.Without adjustment, the performance losses caused by reflection are in the order of 40 #. With a converter made up of three sections and the dielectric constant t. «! · Fco and ^ 3> die beia P ielsweiae £ ϋ? B and B "the value I 1 " 2.8, for G and C the value I 2 * and for D and D * the value £ Ratio 4 to each other, reduced to 2 ^.

Fig«2 zeigt eine metallische Umhüllung E und ein absorbierend·« Material A* sowie die drei Schichten B, C , D, welehe die Anpassung der Fchicht A* an die in gleicher Weise wie ±m Fall von Fig.1 bewirken·Fig '2 shows a metallic enclosure E and an absorbent · "Material A * as well as the three layers B, C, D, adjusting the Fchicht A welehe * effect of the m in the same manner as the case of Fig.1 ± ·

EaEa

909810/0377909810/0377

wir4 dab«! angenommen, daea der recht· Teil tos S dtη inneren feil der metallischen üshüllung bildetf anderenfalls wäre es erforderlich, auf diesem rechten Teil, eisen Wandler το η gleicher Art wie auf dem linken Seil anzubringen*wir4 dab «! assumed that the right · part tos S dtη forms the inner part of the metallic envelope f otherwise it would be necessary on this right part, iron converter το η of the same type as on the left To attach rope *

PatentaneprüohePatent application

909810/0377909810/0377

Claims (2)

Pat entansprüchePatent claims U41626U41626 Umhüllung für HSohstfrequenssender und-Empfänger mit einer dielektrischen oder meta111sehen Seele, dadurch gekennseiohnet, dass die Seele wenigsten« auf einer ihrer Pläohen eine Anordnung von aufeinanderfolgenden homogenen dielektrischen Schichten mit unterschiedlichen Dielektri-Bitätekonstanten aufweist«Cover for high-frequency transmitters and receivers with a dielectric or meta111seiohnet soul, characterized by the fact that the soul at least "on one of its planes has an arrangement of successive homogeneous dielectric layers with different dielectric constants « 2. Uehüllung nach Anspruch 1, dadurch gekennaeioh.net, dass bei einer το η Loft umspülten Umhüllung xwei gleichartige Anordnungen Ton dielektrischen Schichten symmetrisch angebracht sind·2. Covering according to claim 1, characterized gekennaeioh.net that at a το η Loft bathed envelope xwei similar arrangements clay dielectric layers attached symmetrically are· 3, Umhüllung nach einem der Torhergehenden Ansprüche» dadurch gekennzeichnet, dass die umhüllung eine dielektrische3, envelope according to one of the claims that go through the gate »thereby characterized in that the envelope is a dielectric Seele aufweist, und dass jede Anordnung τοη dielektrischen Schichten sich an die Seele ansohliesst«Has soul, and that every arrangement τοη dielectric Layers attach to the soul " 4* Umhüllung naoh einem der τοVergehenden Ansprüche, dadureh gekennseiehnet, dass die Seele der Umhüllung metallisch ist,und dass eine absorbierende Schicht «wischen der Seele und jeder der Anordnung τοη dielektrischen Sohiohten angeordnet ist·4 * Wrapping according to one of the previous claims, dadureh known that the soul of the envelope is metallic is and that an absorbent layer «wipe the soul and each of the arrangement τοη dielectric brackets is arranged 909810/0377909810/0377
DE19641441626 1963-03-01 1964-02-29 Wraps for high frequency receivers and high frequency transmitters Withdrawn DE1441626A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR926473A FR1357823A (en) 1963-03-01 1963-03-01 Envelopes for microwave receivers and transmitters

Publications (2)

Publication Number Publication Date
DE1441626A1 true DE1441626A1 (en) 1969-03-06
DE1441626B2 DE1441626B2 (en) 1969-10-09

Family

ID=8798208

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19641441626 Withdrawn DE1441626A1 (en) 1963-03-01 1964-02-29 Wraps for high frequency receivers and high frequency transmitters

Country Status (3)

Country Link
DE (1) DE1441626A1 (en)
FR (1) FR1357823A (en)
GB (1) GB1043125A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2772520A1 (en) * 1997-12-11 1999-06-18 Giat Ind Sa COMPOSITE STRUCTURAL MATERIAL ABSORBING RADAR WAVES AND USE OF SUCH MATERIAL

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5148435B2 (en) * 1971-03-11 1976-12-21
US4179699A (en) * 1977-07-05 1979-12-18 The Boeing Company Low reflectivity radome
GB2319117B (en) * 1978-02-22 1998-09-02 Emi Ltd Improvements in or relating to materials which absorb electromagnetic energy
GB2192756A (en) * 1986-07-07 1988-01-20 Hoybond Limited Energy absorbing coatings and their use in camouflage
FR2731846B1 (en) * 1987-04-14 1997-07-25 Thomson Csf WALL FOR RADOMES AND RADOMES THUS OBTAINED
US4980696A (en) * 1987-05-12 1990-12-25 Sippican Ocean Systems, Inc. Radome for enclosing a microwave antenna
US5017939A (en) * 1989-09-26 1991-05-21 Hughes Aircraft Company Two layer matching dielectrics for radomes and lenses for wide angles of incidence
US5121129A (en) * 1990-03-14 1992-06-09 Space Systems/Loral, Inc. EHF omnidirectional antenna
CN108767492B (en) * 2018-04-25 2020-12-04 北京邮电大学 Adjustable terahertz broadband wave absorber

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2772520A1 (en) * 1997-12-11 1999-06-18 Giat Ind Sa COMPOSITE STRUCTURAL MATERIAL ABSORBING RADAR WAVES AND USE OF SUCH MATERIAL
EP0924798A1 (en) * 1997-12-11 1999-06-23 Giat Industries Composite radar absorbing material and use of such a material
US6111534A (en) * 1997-12-11 2000-08-29 Giat Industries Structural composite material absorbing radar waves and use of such a material

Also Published As

Publication number Publication date
DE1441626B2 (en) 1969-10-09
FR1357823A (en) 1964-04-10
GB1043125A (en) 1966-09-21

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Legal Events

Date Code Title Description
E77 Valid patent as to the heymanns-index 1977
EGA New person/name/address of the applicant
EHJ Ceased/non-payment of the annual fee