DE20219029U1 - Reflection optimized antenna cladding for microwave range - Google Patents

Reflection optimized antenna cladding for microwave range

Info

Publication number
DE20219029U1
DE20219029U1 DE20219029U DE20219029U DE20219029U1 DE 20219029 U1 DE20219029 U1 DE 20219029U1 DE 20219029 U DE20219029 U DE 20219029U DE 20219029 U DE20219029 U DE 20219029U DE 20219029 U1 DE20219029 U1 DE 20219029U1
Authority
DE
Germany
Prior art keywords
core
layer
reflection
cover layers
dielectric constants
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.)
Expired - Lifetime
Application number
DE20219029U
Other languages
German (de)
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.)
NESKE HANS KLAUS
Original Assignee
NESKE HANS KLAUS
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 NESKE HANS KLAUS filed Critical NESKE HANS KLAUS
Priority to DE20219029U priority Critical patent/DE20219029U1/en
Publication of DE20219029U1 publication Critical patent/DE20219029U1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/42—Housings not intimately mechanically associated with radiating elements, e.g. radome
    • H01Q1/422—Housings not intimately mechanically associated with radiating elements, e.g. radome comprising two or more layers of dielectric material

Abstract

The cladding has a multiple layer dielectric cross-sectional structure comprising a core layer and two or more cover layers arranged symmetrically relative to the core. The layer thickness of the core is a multiple of half the core wavelength. The cover layer thickness is a quarter of the wavelength of the cover layers. The core has the greatest dielectric constant. The cover layers symmetric to the core have the same relative dielectric constants. The relative dielectric constant of the outermost cover layers are less than that of the adjacent inner layers. The dielectric constants of the cover layers are derived from that of the core.

Description

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßtThe description text was not recorded electronically

Claims (6)

1. Reflexionsoptimierte Antennenverkleidung mit mehrschichtiger, vorzugsweise dreischichtiger dielektrischer Querschnittsstruktur, bestehend aus einer Kernschicht und zwei oder mehreren, symmetrisch zum Kern angeordneten Deckschichten, dadurch gekennzeichnet, dass
  • a) die Schichtdicken des Kerns dK ≈ 0,5n.λ0Kern und der Deckschichten dD ≈ 0,25.λ0Deckschicht betragen,
  • b) der Kern die größte und die zum Kern symmetrischen Deckschichten gleiche relative Dielektrizitätskonstanten haben, die relativen Dielektrizitätskonstanten der jeweils äußeren Deckschichten kleiner als die der benachbarten inneren Deckschichten sind und
  • c) die Dielektrizitätskonstanten der Deckschichten aus der Dielektrizitätskonstanten des Kerns abgeleitet sind.
1. reflection-optimized antenna cladding with a multilayer, preferably three-layer dielectric cross-sectional structure, consisting of a core layer and two or more top layers arranged symmetrically to the core, characterized in that
  • a) the layer thicknesses of the core d K ≈ 0.5n.λ 0 core and the cover layers d D ≈ 0.25.λ 0 cover layer,
  • b) the core has the largest and the same relative dielectric constants of the cover layers symmetrical to the core, the relative dielectric constants of the respective outer cover layers are smaller than those of the adjacent inner cover layers and
  • c) the dielectric constants of the cover layers are derived from the dielectric constants of the core.
2. Reflexionsoptimierte Antennenverkleidung nach Anspruch 1, dadurch gekennzeichnet, dass bei einer dreischichtigen Struktur die relativen Dielektrizitätskonstanten der Deckschichten εrDeckschicht im Bereich
(εrKern)0,33 < εrDeckschicht ≦ (εrKern)0,5 liegen.2. Reflection- optimized antenna cladding according to claim 1, characterized in that in the case of a three-layer structure, the relative dielectric constants of the cover layers ε r cover layer in the region
(ε r core ) 0.33 <ε r top layer ≦ (ε r core ) 0.5 . 3. Reflexionsoptimierte Antennenverkleidung nach Anspruch 2, dadurch gekennzeichnet, dass bei einer zweckmäßigen Ausführung beträgt εrDeckschicht = (εrKern)0,46 3. Reflection- optimized antenna cladding according to claim 2, characterized in that in an expedient embodiment ε r cover layer = (ε r core ) is 0.46 4. Reflexionsoptimierte Antennenverkleidung nach Anspruch 1, dadurch gekennzeichnet, dass bei einer fünfschichtigen Struktur die relativen Dielektrizitätskonstanten der Deckschichten im Bereich
(εrKern)0,5 < εrDeckschicht-innen < (εrKern)0,75 und
(εrKern)0,2 ≦ εrDeckschicht-außen ≦ (εrKern)0,25 liegen.4. reflection-optimized antenna cladding according to claim 1, characterized in that in a five-layer structure, the relative dielectric constants of the cover layers in the area
(ε core ) 0.5 <ε core inside <(ε core ) 0.75 and
(ε core ) 0.2 ≦ ε r-outer layer ≦ (ε core ) 0.25 . 5. Reflexionsoptimierte Antennenverkleidung nach Anspruch 4, dadurch gekennzeichnet, dass bei einer zweckmäßigen Ausführung beträgt
εrDeckschicht-innen ≈ (erKern)0,65 und εrDeckschicht-außen ≈ (εrKern)0,25.5. reflection-optimized antenna cladding according to claim 4, characterized in that is in an appropriate embodiment
ε inner cover layer ≈ ( core ) 0.65 and ε outer cover layer ≈ (ε core ) 0.25 . 6. Reflexionsoptimierte Antennenverkleidung nach Anspruch 2 oder 4, dadurch gekennzeichnet, dass innerhalb der vorgegebenen Bereiche die relativen Dielektrizitätskonstanten der Deckschichten entsprechend der primären Forderung an die Reflexionsdämpfung, nämlich
entweder nach der Größe der Reflexionsdämpfung
oder nach der Bandbreite einer zulässigen Reflexionsdämpfung,
gewählt werden.6. reflection-optimized antenna cladding according to claim 2 or 4, characterized in that within the predetermined ranges, the relative dielectric constants of the cover layers according to the primary requirement for reflection loss, namely
either by the amount of reflection loss
or according to the bandwidth of an allowable reflection loss,
to get voted.
DE20219029U 2002-12-04 2002-12-04 Reflection optimized antenna cladding for microwave range Expired - Lifetime DE20219029U1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE20219029U DE20219029U1 (en) 2002-12-04 2002-12-04 Reflection optimized antenna cladding for microwave range

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE20219029U DE20219029U1 (en) 2002-12-04 2002-12-04 Reflection optimized antenna cladding for microwave range

Publications (1)

Publication Number Publication Date
DE20219029U1 true DE20219029U1 (en) 2003-02-20

Family

ID=7977779

Family Applications (1)

Application Number Title Priority Date Filing Date
DE20219029U Expired - Lifetime DE20219029U1 (en) 2002-12-04 2002-12-04 Reflection optimized antenna cladding for microwave range

Country Status (1)

Country Link
DE (1) DE20219029U1 (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2855916A1 (en) * 2003-06-09 2004-12-10 Mitsubishi Electric Corp RADOME
WO2009083165A1 (en) * 2007-12-21 2009-07-09 Rehau Ag + Co Chassis plastic component for a motor vehicle, and the use thereof
DE102011016683A1 (en) * 2011-01-27 2012-08-02 Oerlikon Trading Ag, Trübbach Radar transparent coating
EP2747202A1 (en) * 2012-12-18 2014-06-25 EADS Deutschland GmbH Radome wall
DE102014213502A1 (en) * 2014-07-11 2016-01-14 Bayerische Motoren Werke Aktiengesellschaft Protective element for a radar sensor in a motor vehicle
WO2019118012A1 (en) * 2017-12-15 2019-06-20 Google Llc Radar attenuation mitigation
EP3423152B1 (en) * 2016-03-04 2021-12-22 Accure Medical, LLC Systems for treatment of fungus
US11592551B2 (en) 2019-10-31 2023-02-28 Audi Ag Radome for a radar sensor of a motor vehicle and motor vehicle

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2855916A1 (en) * 2003-06-09 2004-12-10 Mitsubishi Electric Corp RADOME
WO2009083165A1 (en) * 2007-12-21 2009-07-09 Rehau Ag + Co Chassis plastic component for a motor vehicle, and the use thereof
DE102011016683A1 (en) * 2011-01-27 2012-08-02 Oerlikon Trading Ag, Trübbach Radar transparent coating
EP2747202A1 (en) * 2012-12-18 2014-06-25 EADS Deutschland GmbH Radome wall
DE102014213502A1 (en) * 2014-07-11 2016-01-14 Bayerische Motoren Werke Aktiengesellschaft Protective element for a radar sensor in a motor vehicle
EP3423152B1 (en) * 2016-03-04 2021-12-22 Accure Medical, LLC Systems for treatment of fungus
WO2019118012A1 (en) * 2017-12-15 2019-06-20 Google Llc Radar attenuation mitigation
CN111316125A (en) * 2017-12-15 2020-06-19 谷歌有限责任公司 Radar attenuation suppression
US10761204B2 (en) 2017-12-15 2020-09-01 Google Llc Radar attenuation mitigation
US11221394B2 (en) 2017-12-15 2022-01-11 Google Llc Radar attenuation mitigation
CN111316125B (en) * 2017-12-15 2024-03-01 谷歌有限责任公司 Radar attenuation suppression
US11592551B2 (en) 2019-10-31 2023-02-28 Audi Ag Radome for a radar sensor of a motor vehicle and motor vehicle

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Legal Events

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R086 Non-binding declaration of licensing interest
R207 Utility model specification

Effective date: 20030327

R156 Lapse of ip right after 3 years

Effective date: 20060701