EP0520908B1 - Lineare Gruppenantenne - Google Patents

Lineare Gruppenantenne Download PDF

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Publication number
EP0520908B1
EP0520908B1 EP19920401820 EP92401820A EP0520908B1 EP 0520908 B1 EP0520908 B1 EP 0520908B1 EP 19920401820 EP19920401820 EP 19920401820 EP 92401820 A EP92401820 A EP 92401820A EP 0520908 B1 EP0520908 B1 EP 0520908B1
Authority
EP
European Patent Office
Prior art keywords
antenna
carrying
face
les
des
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
EP19920401820
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English (en)
French (fr)
Other versions
EP0520908A1 (de
Inventor
Cyril Mangenot
Gérard Caille
Paul Mongrand
Michel Gomez-Henry
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.)
Alcatel Lucent SAS
Original Assignee
Alcatel CIT SA
Alcatel 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 Alcatel CIT SA, Alcatel SA filed Critical Alcatel CIT SA
Publication of EP0520908A1 publication Critical patent/EP0520908A1/de
Application granted granted Critical
Publication of EP0520908B1 publication Critical patent/EP0520908B1/de
Anticipated expiration legal-status Critical
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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/24—Combinations of antenna units polarised in different directions for transmitting or receiving circularly and elliptically polarised waves or waves linearly polarised in any direction
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/0006—Particular feeding systems
    • H01Q21/0075—Stripline fed arrays
    • H01Q21/0081—Stripline fed arrays using suspended striplines
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/06—Arrays of individually energised antenna units similarly polarised and spaced apart
    • H01Q21/08—Arrays of individually energised antenna units similarly polarised and spaced apart the units being spaced along or adjacent to a rectilinear path

Definitions

  • the invention relates to a linear array antenna with high efficiency.
  • Such an antenna is particularly advantageous in the Synthetic Aperture Radar or SAR) used in particular in the space sector.
  • network lobes appear in the radiation diagram. Their level is greater than that required for the side lobes, which decreases the antenna gain and creates ambiguities.
  • the antenna having a long length, to generate a end lobe in the plane this condition leads to a number of sources prohibitive.
  • the document EP 317 414 A1 describes a planar antenna with microstrip suspended, and self-supporting ground planes with thick radiating slots, without positioning pads. This antenna is intended for ground applications of consumer goods, for example satellite TV reception, and its design aims above all at a low production cost.
  • the object of the linear array antenna of the invention is to meet all of these specifications.
  • the invention proposes, in fact, a linear array antenna composed of a radiating element formed by an alignment of slots annulars excited by at least one distributor element, characterized in that this distributor element is a buried distributor, included in the radiating element, and therefore invisible from the radiating face of said antenna; so as to avoid any stray radiation from said dispatcher.
  • Such an antenna is provided to radiate (or receive) simultaneously in two linear polarizations, or for radiate (or receive) simultaneously with two polarizations circular (right and left).
  • said antenna includes an integrated radome and a distributor floor.
  • said antenna only comprises thin substrates, and therefore of low mass, spaced apart by conductive spacers without mechanical continuity in the plane of the network, so as to avoid differential expansions with substrates.
  • said antenna comprises shields, between polarizations of a sub-network and between adjacent sub-networks, radiant elements and distributors so as to avoid any coupling between them.
  • the antenna is a broadband antenna using resonant discs etched on the distributor stage, resonating at a frequency close to that of annular slots.
  • the antenna is a dual-band antenna using resonant disks engraved on the distributor stage, resonating at a frequency far from that of the annular slots.
  • the antenna according to the invention is a linear array antenna composed of an alignment of annular slots excited by at least one buried distribution element, included in the radiating element, and therefore invisible from the radiating face of said antenna; so as to avoid any stray radiation from said distributor.
  • Such an antenna is intended to radiate (or receive) simultaneously in two linear polarizations; or to radiate (or receive) simultaneously in two circular polarizations (right and left).
  • both half-shells 10 and 15 must be connected to the same potential. This is provided by the first substrate thanks to the metallization of surfaces opposite with the two half-shells and the presence of a large number of metallized holes located on the periphery of the cavities, connecting these two surfaces.
  • These three substrates 25, 32 and 37 are spaced apart by the conductive spacers 41, for example of aluminum, which delimit the cavities of the annular slots and the channels of the distributors.
  • the assembly can be carried out in a single operation by brazing in the oven after depositing a solder preform at the interfaces between the spacers and the copper substrates, or by tinning the spacers.
  • the materials and process used in such realization guarantee very good performances in cost and mass subnets.
  • the spacers of small dimensions and without continuity in the network plan allow the use of materials with low coefficient of expansion, compatible for example with a carbon structural panel ensuring high rigidity to the antenna.
  • the subnets are much shorter, which allows for a antenna with slightly higher ohmic losses.
  • the invention thus makes it possible, in any one of these embodiments to form a space radar antenna with synthesis of aperture comprising a network of 1.33 x 10 m 2 composed of sub-panels of 0.66 x 1 m 2 .
  • the elevation scan requiring a step between the subnets of approximately 0.7 ⁇ at 5.3 GHz, no azimuth scanning not being specified, to avoid an additional distributor stage supplying short radiating elements, bipolar sub-networks of the length of the panel (about 1 m) are therefore best suited.
  • the invention makes it possible to satisfy all of these specifications with sub-networks of 24 annular slots.
  • the antenna therefore performs the functions of radiating element and distributor on one level. Lower and upper spaces are made by aluminum half-shells assembled by screws. The excitation of the two polarizations is achieved by coaxial probes thumbnails placed near the center of the network.
  • the radiation diagrams for the horizontal and vertical polarizations are given in FIGS. 4 and 5.
  • the normal polarization diagrams 60 and 61 in the azimuth planes are very close to those of an equi-amplitude equi-phase opening like the show the indicators at "*" at ⁇ 3.22 ° which correspond to the first nulls of such an opening.
  • the cross polarization diagrams 62 and 63 in the axis are less than 30 dB / max over the entire bandwidth.

Landscapes

  • Variable-Direction Aerials And Aerial Arrays (AREA)
  • Waveguide Aerials (AREA)

Claims (7)

  1. Lineare Gruppenantenne, die aus einer Aneinanderreihung von auf einem Substrat (18, 37, 47) getragenen Ringspalten (21, 39, 49) besteht, die mit Hohlräumen (11) und Erregungselementen (53) für Spalten zusammenarbeiten, die dafür vorgesehen sind, die Antenne gleichzeitig gemäß zweier Polarisationen strahlen zu lassen, wobei die Hohlräume (11) von Zwischenstücken (41) ohne mechanische Kontinuität in der Ebene der Gruppe begrenzt sind, die eine Masseebene (30, 43) und eine gedruckte Schaltungsfolie (13, 32, 47) trennen, die die Erregungselemente (53) und Schaltungen (14, 35, 51, 52) zur Verteilung der Polarisationen vom eingebetteten Typ tragen, dadurch gekennzeichnet, dass die Fläche der gedruckten Schaltungsfolie, die die Erregungselemente trägt, für die strahlende Fläche der Antenne unsichtbar ist und dass die trennenden Zwischenstücke (41) auch Kanäle (16) für die Schaltungen der Verteiler begrenzen, die die Kopplungen zwischen Polarisationen vermeiden.
  2. Antenne nach Anspruch 1, bei welcher das Substrat (47), das die Ringspalte (49) trägt, auch die gedruckte Schaltungsfolie (47) ist, die die Erregungselemente (53) trägt.
  3. Antenne nach Anspruch 1, bei welcher das Substrat (18, 37), das die Ringspalte (21, 39) trägt, von der gedruckten Schaltungsfolie (13, 32) verschieden ist, die die Erregungselemente (53) trägt.
  4. Antenne nach Anspruch 1, bei welcher die gedruckte Schaltungsfolie (13, 32), die die Erregungselemente für die Spalte und die Schaltungen der Verteiler trägt, zwischen zwei Halbschalen (10, 15) aus leitendem Material eingeschlossen ist.
  5. Antenne nach Anspruch 4, bei der jede Halbschale aus einem Substrat (25, 37) mit einer Fläche besteht, auf welcher die Zwischenstücke (41) angebracht sind.
  6. Antenne nach Anspruch 1, bei der die gedruckte Schaltungsfolie (47) eine Fläche (48), die die Ringspalte (49) trägt, und eine entgegengesetzte Fläche (50) aufweist, die die Erregungselemente (53) für die Spalte und die Schaltungen (51, 52) der eingebetteten Verteiler trägt, wobei diese entgegengesetzte Fläche (50) auf eine Schale (45) gelegt ist, die aus einem Substrat (43) besteht, auf welche die Zwischenstücke (46) gelötet sind.
  7. Antenne nach einem der vorhergehenden Ansprüche, bei der mitschwingende Scheiben (65) auf die Fläche der gedruckten Schaltungsfolie geätzt sind, die die Erregungselemente für die Spalte und die Schaltungen der Verteiler trägt.
EP19920401820 1991-06-28 1992-06-26 Lineare Gruppenantenne Expired - Lifetime EP0520908B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9108080A FR2678438B1 (fr) 1991-06-28 1991-06-28 Antenne reseau lineaire.
FR9108080 1991-06-28

Publications (2)

Publication Number Publication Date
EP0520908A1 EP0520908A1 (de) 1992-12-30
EP0520908B1 true EP0520908B1 (de) 2000-03-01

Family

ID=9414474

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19920401820 Expired - Lifetime EP0520908B1 (de) 1991-06-28 1992-06-26 Lineare Gruppenantenne

Country Status (6)

Country Link
EP (1) EP0520908B1 (de)
JP (1) JPH06500909A (de)
CA (1) CA2090323A1 (de)
DE (1) DE69230709T2 (de)
FR (1) FR2678438B1 (de)
WO (1) WO1993000723A1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6930651B2 (en) 2003-04-11 2005-08-16 Kathrein-Werke Kg Reflector for a mobile radio antenna
US7023398B2 (en) 2003-04-11 2006-04-04 Kathrein-Werke Kg Reflector for a mobile radio antenna

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2703516A1 (fr) * 1993-04-02 1994-10-07 Europ Agence Spatiale Antenne à ondes progressives.
SE9603565D0 (sv) * 1996-05-13 1996-09-30 Allgon Ab Flat antenna
DE19712510A1 (de) * 1997-03-25 1999-01-07 Pates Tech Patentverwertung Zweilagiger Breitband-Planarstrahler
SE511064C2 (sv) * 1997-12-12 1999-07-26 Allgon Ab Tvåbandsantenn
US6054953A (en) * 1998-12-10 2000-04-25 Allgon Ab Dual band antenna
US10446928B2 (en) 2017-06-09 2019-10-15 Mitsubishi Electric Corporation Phased array antenna

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0317414B1 (de) * 1987-11-13 1995-04-12 Emmanuel Rammos Flache Antenne mit SSL-Speisenetzwerk, bestehend aus selbsttragenden, mit dicken strahlenden Schlitzen ausgerüsteten Masseflächen ohne Positionierungsstifte
US4929959A (en) * 1988-03-08 1990-05-29 Communications Satellite Corporation Dual-polarized printed circuit antenna having its elements capacitively coupled to feedlines

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6930651B2 (en) 2003-04-11 2005-08-16 Kathrein-Werke Kg Reflector for a mobile radio antenna
US7023398B2 (en) 2003-04-11 2006-04-04 Kathrein-Werke Kg Reflector for a mobile radio antenna

Also Published As

Publication number Publication date
WO1993000723A1 (fr) 1993-01-07
DE69230709D1 (de) 2000-04-06
CA2090323A1 (fr) 1992-12-29
JPH06500909A (ja) 1994-01-27
EP0520908A1 (de) 1992-12-30
FR2678438B1 (fr) 1993-09-03
FR2678438A1 (fr) 1992-12-31
DE69230709T2 (de) 2000-09-28

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