DE1441626A1 - Wraps for high frequency receivers and high frequency transmitters - Google Patents
Wraps for high frequency receivers and high frequency transmittersInfo
- 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- Withdrawn
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
-
- 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
- H01Q17/008—Devices 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
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 *
909810/0377909810/0377
Claims (2)
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)
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)
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 |
-
1963
- 1963-03-01 FR FR926473A patent/FR1357823A/en not_active Expired
-
1964
- 1964-02-27 GB GB830664A patent/GB1043125A/en not_active Expired
- 1964-02-29 DE DE19641441626 patent/DE1441626A1/en not_active Withdrawn
Cited By (3)
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 |