EP0489934A1 - Antenne plate - Google Patents

Antenne plate Download PDF

Info

Publication number
EP0489934A1
EP0489934A1 EP91921023A EP91921023A EP0489934A1 EP 0489934 A1 EP0489934 A1 EP 0489934A1 EP 91921023 A EP91921023 A EP 91921023A EP 91921023 A EP91921023 A EP 91921023A EP 0489934 A1 EP0489934 A1 EP 0489934A1
Authority
EP
European Patent Office
Prior art keywords
layer
antenna
radiators
grating
wavelength
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.)
Granted
Application number
EP91921023A
Other languages
German (de)
English (en)
Other versions
EP0489934A4 (en
EP0489934B1 (fr
Inventor
Nikolai Ivanovich Voitovich
Boris Mikhailovich Andronov
Jury Fedorovich Borodin
Vitaly Nikolaevich Voronoi
Boris Zakharovich Katsenelenbaum
Evgenia Nikolaevna Korshunova
Viktor Nikolaevich Kocheshev
Ljudas Iozovich Pangonis
Mikhail Leonidovich Pereyaslavets
Arkady Motelevich Rasin
Nikolai Nikolaevich Repin
Alexei Nikolaevich Sivov
Andrei Dmitrievich Chuprin
Alexandr Dmitrievich Shatrov
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.)
NAUCHNO-ISSLEDOVATELSKY INSTITUT PO IZMERITELNOI TEKHNIKE
Original Assignee
NAUCHNO-ISSLEDOVATELSKY INSTITUT PO IZMERITELNOI TEKHNIKE
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 NAUCHNO-ISSLEDOVATELSKY INSTITUT PO IZMERITELNOI TEKHNIKE filed Critical NAUCHNO-ISSLEDOVATELSKY INSTITUT PO IZMERITELNOI TEKHNIKE
Publication of EP0489934A1 publication Critical patent/EP0489934A1/fr
Publication of EP0489934A4 publication Critical patent/EP0489934A4/de
Application granted granted Critical
Publication of EP0489934B1 publication Critical patent/EP0489934B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • 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
    • H01Q21/061—Two dimensional planar arrays
    • H01Q21/064—Two dimensional planar arrays using horn or slot aerials
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
    • H01Q13/10—Resonant slot antennas
    • H01Q13/18—Resonant slot antennas the slot being backed by, or formed in boundary wall of, a resonant cavity ; Open cavity antennas

Definitions

  • the present invention relates to antenna technology and relates in particular to a surface antenna.
  • An antenna with a high amplification factor is required to receive signals from the satellites in the 12 GHz range.
  • Conventional mirror antennas meet this requirement.
  • the mirror antennas are quite extensive, their operating data deteriorate under the influence of rain, snow and wind.
  • the mast or any other attachment for antenna construction must be quite stiff and therefore quite extensive and heavy.
  • the exterior view of the mirror antenna does not match that of residential and public buildings.
  • the area antennas have a lower mass, the sail area depends to a smaller extent on the weather conditions.
  • the aesthetic correspondence of the area antennas with the exterior view of the residential and public buildings allows the former to be arranged on the walls of the buildings. Since the area antennas allow signal reception from a satellite to be realized through window glass, they can be set up directly in the apartments.
  • a flat antenna grating which consists of a shielding layer in the form of a plate made of conductive material and of a radiation layer arranged above the former, which contains printed cavity emitters and a feed circuit made of conductive material, and an insulating insert between these layers (Marata Takao Ohmaru Kenji "A flat panel antenna with two-layer structure for satellite broadcasting reception ", NHK Lab. Note - 1989 - N 374, p. 1-12).
  • the square-shaped printed radiator has a galvanic contact with strips of the supply circuit.
  • the emitters are at a distance of 0.7 to 0.9 ⁇ , where ⁇ is the wavelength.
  • An antenna based on a cavity resonator which contains a housing with an insulating filler, to which a waveguide is connected.
  • Uniformly distributed rectangular coupling openings are provided on one of the housing walls, which are arranged in relation to a wave field excited within the housing in such a way that half waves of the same polarity (DE, A, 3530647) arise in these coupling openings.
  • the known antenna does not allow a predetermined operating frequency range to be realized, to ensure a sufficiently small side lobe level, and has large dimensions in the direction orthogonal to the radiating antenna opening.
  • a surface antenna for wave reception in the UHF range is known from a geostationary broadcasting satellite (US, A, 4851855) which contains a system of coplanar printed surface radiators which are located between two layers of synthetic resin. One of the surfaces of the radiator system is an antenna opening.
  • the antenna also contains a flat supply circuit, which is formed by strips of conductive material and is arranged between the two layers of synthetic resin, and a plan screen underneath. The system of the emitters and the feed circuit, the feed circuit and the screen are separated from one another by intermediate layers.
  • the intermediate layers are executed in the antenna mentioned in the form of a frame made of metal, synthetic resin or wood.
  • the antenna feed network represents a suspended symmetrical stripline.
  • stripline By using the stripline, veluste can be avoided in the known antenna, which are caused by direct radiation from the conductors of the supply circuit, the radiation due to wave diffraction at T-branches, impedance transformers and from microstrip bends. Heat losses in the stripline dielectric are also reduced.
  • the known antenna also has high heat losses in the inner conductor and the shielding of the stripline due to the large extent of the strip, a large number of binary power dividers, impedance transformers and line bends.
  • a surface antenna in the form of a multilayer structure is known, which is characterized by a shielding layer conductive material, a layer with a strip feed circuit and a radiation layer in the form of a plate with slot radiators is formed, which are electromagnetically coupled to the respective strips of the feed circuit.
  • the layers mentioned are separated from one another by intermediate layers of insulating material.
  • a transition is connected to the shielding layer and the strips of the feed circuit.
  • a galvanic coupling of the conductors of the layers with the supply circuit and the slot radiators is missing (Hirofumi Ishizaki "Sguare Antennas Edge Jinto BS Antenna Market” - JEI, 1990, Vol. 37, N 8, series N 432, pp. 63 to 64).
  • the antenna works as follows in transmission mode.
  • the signal from the transmitter is given to the input of the transition and further fed to the slot radiators via the feed circuit.
  • the slots are excited by the field of an electromagnetic wave that propagates along the stripline.
  • the known antenna also has high heat losses in the stripline and the shielding thereof due to a large expansion of the feed line, a large number of binary power dividers, impedance transformers, line elbows, and a large drop in power along the line, which cannot be reduced.
  • wave losses along the stripline with a good dielectric as filler for the line contribute to heat losses in the conductors - in the strip and the shielding of the line.
  • the invention has for its object to provide a surface antenna with such a design that allows a high directional factor in the receive wave range with a reduction in losses in the feed circuit of the antenna by reducing the number of slot radiators by using resonators with a to ensure partially permeable surface.
  • the surface antenna in the form of a multi-layer structure the shielding layer separated from one another by insulating material layers of conductive material, layer with a strip feed circuit and radiation layer in the form of a plate with slot radiators, which are electromagnetically coupled to the respective strips of the feed circuit are formed and contains a transition connected to the shielding layer and the strips of the supply circuit
  • the invention additionally contains a grating with cavity cells and a layer arranged thereon, which is partially permeable to the reception wave range, the grating surface being made of conductive material and the grating on a Radiation layer plate forming a cavity through each of its cells is arranged, in which at least one slot radiator is arranged, the width and length of each cell exceeding the mean wavelength and the height of which deviates from half the mean wavelength by about 0.02 to 0.07 of the wavelength.
  • the introduction of the resonator grating into the surface antenna allows the number of slot radiators to be significantly reduced while maintaining the directional factor of the surface antenna by transforming the field of the radiator in the field of the natural oscillation of the resonator, thereby eliminating the possibility of secondary diffraction maxima appearing in the directional diagram.
  • the reduction in the number of radiators makes it possible to simplify the supply circuit and to keep the losses in it lower.
  • the partially transparent layer is made in the form of a plate made of conductive material with coupling openings, the grating height having to be below half a medium wavelength.
  • the plate made of conductive material with the coupling openings as a partially permeable layer allows this layer to be produced by stamping.
  • the partially permeable layer prefferably be in the form of an insulating film with electrically insulated metal plates attached to it on both sides, the grating height having to be above half a medium wavelength.
  • the use of the insulating foil with the metal plates allows the semi-permeable layer to be produced using a printing technique.
  • the surface antenna is manufactured in such a way that the width and length of each cell is ⁇ 4 ⁇ , where ⁇ is the wavelength, while the number of slot radiators in each cell is two and they are parallel to a wall of the Cell at intervals lie from this, which each make 1/4 and 3/4 of the length of the wall orthogonal to the slots.
  • the surface antenna is designed in such a way that in each grid cell there are additionally two slot radiators which are parallel to one another and orthogonal to the main slot radiators at intervals which are 1/4 or 3/4 of the length of the Slits are orthogonal wall, the lengths of the strips corresponding to each pair of the orthogonally arranged radiators should differ from one another by 1/4 ⁇ .
  • the antenna contains a shielding layer 1 (FIG. 1), a layer 2 with strips 3 of a feed circuit made of conductive material, a radiation layer 4, which is a conductive plate with a system of slot radiators 5, 6, intermediate layers 7 and 8, a grid 9 with Cavity cells 10, a partially permeable layer 11 with coupling openings 12, a cladding 13, if necessary a coaxial strip or a strip-waveguide transition 14.
  • a shielding layer 1 (FIG. 1)
  • a layer 2 with strips 3 of a feed circuit made of conductive material a radiation layer 4, which is a conductive plate with a system of slot radiators 5, 6, intermediate layers 7 and 8, a grid 9 with Cavity cells 10, a partially permeable layer 11 with coupling openings 12, a cladding 13, if necessary a coaxial strip or a strip-waveguide transition 14.
  • the shielding layer 1 is made of aluminum, copper, silver or other material with high electrical conductivity. To protect the conductive shielding layer 1 from corrosion, its surface can be covered with a 5 to 20 ⁇ m thick dielectric layer.
  • Layer 2 is produced in the form of a three-plate construction, which ensures corrosion protection for the conductors of the supply circuit.
  • the layer 4 is also produced in the form of a three-plate construction, the upper side of the conductive plate with the system of slot radiators 5, 6 being covered with a plastic film after the plate has been soldered or glued to the grid 9.
  • the intermediate layers 7, 8 are made of foam polystyrene or another dielectric with a low dielectric loss factor.
  • the grid 9 and the partially permeable layer 11 are made of a highly conductive material such as aluminum, copper, silver or a material similar in terms of electrical conductivity.
  • the grid 9 is made either of a dielectric with a metal coating applied thereon or of a highly conductive material.
  • the layer 11 is produced in the form of a metal plate which is perforated by round or square openings 12.
  • the layer 11 (FIG. 2) is produced in the form of an insulating film with electrically insulated metal plates 15 attached to its two sides.
  • the conductive plate of layer 4 After assembly of the antenna, the conductive plate of layer 4, the grating 9 and the layer 11 are galvanically contacted with one another over the entire line of contact.
  • the galvanic coupling is achieved either by soldering or gluing using a conductive adhesive.
  • the conductive plate of the layer 4 together with the cells 10 of the grating 9 and the layer 11 forms nxm cavity resonators with a partially permeable surface, where n and m represent the numbers of the resonators in the direction of the axes x and y of a right-angled coordinate system in the plane of the antenna opening.
  • the length and the width of the cells 10 are selected in the order of a few wavelengths depending on the predetermined operating frequency range, for example 4 ⁇ x 4 ⁇ .
  • the height of the grating 9 is chosen from the requirement that the sum of the height of the grating 9 and half the thickness of the layer 11 deviate from the half wavelength by a size which is proportional to the square root of the relative frequency range, for example by a size of 0.02 to 0.07 of the wavelength.
  • the choice of the number nxm of the resonators is realized on the condition of securing a predetermined antenna amplification factor.
  • the surface antenna according to the invention works as follows.
  • the signal from the transmitter (not shown in FIG.) Is applied to the input of the coaxial strip transition 14 (FIG. 1) and is subsequently fed to the slot radiators 5, 6 via the strips 3 of the feed circuit.
  • the slits are excited by the field of the electromagnetic wave that propagates along the stripline. Furthermore, the cavity resonators are excited by the slots, whereupon the electromagnetic energy is emitted through the layer 11.
  • the field structure in the resonator with a partially permeable wall strives asymptotically towards the field structure in the closed resonator with increasing quality.
  • the amplitudes of the higher vibrations are small compared to the amplitude of the fundamental vibration due to the filter properties of the resonator.
  • the antenna forms a directional diagram with a radiation maximum in the normal direction to the opening, while the radiation field has circular polarization.
  • the inventive antenna grating nonetheless has no secondary diffraction maxima.
  • the additional introduction of the grating 9 and the layer 11 converts the antenna in the form of a grating of discrete radiators into an aperture antenna, in the opening of which the field strength is constant in the direction of one coordinate and in the direction of the other within the limits of each resonator after the cosine law changes.
  • the field distribution mentioned in the antenna opening ensures suppression of secondary interference maxima, which would occur at larger distances in the grating.
  • the value of the longitudinal attenuation of the wave in the line decreases.
  • the reduction in the number of circuit elements, the use of the gradual transitions make it possible to achieve a better adaptation in the circuit, which reduces the line losses which are due to multiple wave reflections from the inhomogeneities of the circuit.
  • the reduction the line length in the supply circuit reduces the line losses.
  • the antenna according to the invention has a higher frequency selectivity compared to the known flat antenna grids than the radiation elements of which slots, microstrip lines with bends, dipoles, microstrip emitters, horn radiators are used.
  • the interference with signal reception from the satellite is reduced for a direct television broadcast outside the working frequency band.
  • the proposed antenna offers an advantage in comparison to the mirror antennas currently used for systems for direct television broadcasting in terms of a constructive and aesthetic correspondence with the interior of the apartments, with the exterior view of the residential and public buildings, has a much smaller dimension in Wave beam direction.
  • the plate of the layer 4 has two rows of the two radiators 5 and 6 in each row of orthogonally arranged slots, as shown in FIG. 3 is on.
  • the internal dimensions of the cell 10 of the grid 9 are equal to 95x95 mm.
  • the slots are located in points with the coordinates A (-47.5; 0); B (47.5, 0); C (0; 47.5); D (0; -47.5).
  • the wall height of the grid 9 is 11.7 mm.
  • the layer 11 is 1 mm thick by punching Copper plate with the formation of square openings 12 measuring 7.5x7.5 mm.
  • the hole spacing in the direction of the two coordinates is 11.5 mm.
  • the supply circuit is based on a symmetrical stripline.
  • the width of the strip 3 is 3.8 mm, the thickness 0.018 mm.
  • the height of the stripline is 3 mm.
  • the intermediate layers 7 and 8 are made of foam polystyrene.
  • the dielectric constant of the foam polystyrene is 1.13 and its dielectric loss factor is 5 ⁇ 10 ⁇ 5.
  • the feed circuit is constructed in such a way that the magnetic fluxes in the slot radiators 5, 6 of each row are in phase and are 90 ° out of phase with the flows of the orthogonal row.
  • the signal reaches the antenna through the stripe-coaxial transition 14.
  • Fig. 4 there are graphs showing the measured distribution law for a tangent component of the strength of the electric field E ⁇ illustrate in the antenna aperture.
  • the measurements are at a distance of 4/5 for the antenna aperture on a frequency of 11.7 GHz.
  • the dependency of the antenna gain factor K on the frequency F is given according to the experimentally determined measurement data.
  • the aluminum grating 9 has 4x4 cells 10.
  • the internal dimensions of the cells 10 are equal to 95x95 mm.
  • the wall height of the grid 9 is 11.7 mm.
  • Two systems of the orthogonally arranged slot radiators 5 and 6 are accommodated on the plate of layer 4. Are in every system the slots are arranged in four rows to eight parallel slots of the radiators 5 or 6 in the row.
  • the layer 11 is made of an aluminum sheet 1 mm thick by perforating it to form square openings 12 of dimensions 7.5x7.5 mm.
  • the grid 9, the layer 11 and the conductive plate of the layer 4 together form sixteen cavity resonators with a partially permeable surface.
  • the arrangement of the slots on the surface of each resonator is identical to the arrangement of the slots in the first antenna.
  • the strip line of the feed circuit has the same dimensions in cross section as the line of the first antenna.
  • the signal reaches the antenna through a strip-waveguide transition 14.
  • the antenna cladding 13 is made of foam polystyrene with a density of 0.6 g / cm3.
  • the external dimensions of the antenna (without taking into account the dimensions of the coaxial strip transition) are 400x400x24 mm.
  • the antenna weight is equal to 2.7 kg.
  • the dependence of the amplification factor K of the second antenna on the frequency F is indicated on the basis of the measurement data in FIG. 10.
  • the ellipticity factor at the maximum of the directional diagram in the frequency range from 11.7 to 12.2 GHz is not worse than 1 dB.
  • the invention can be successfully used in systems for satellite and ground connection, in satellite television systems, in particular as an antenna for direct signal reception in satellite television in the 12 GHz range.

Landscapes

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

Abstract

Une antenne plate comporte une structure multicouche composée d'une couche de blindage (1) d'une matière électroconductrice, une couche (2) dotée d'une alimentation en puissance du type à bande ainsi qu'une couche radiante (4) composée d'une plaque dotée d'émetteurs du type à fente (5, 6) connectée de manière électromagnétique aux bandes correspondantes (3) du circuit d'alimentation, toutes les couches étant séparées mutuellement au moyen d'éléments d'espacement diélectriques (7, 8). L'antenne contient une grille (9) de cellules tridimensionnelles (10) et elle porte une couche (11) partiellement transparente à la bande de fréquences des ondes reçues. La surface de la grille (9) se compose d'une matière électroconductrice et ladite grille (9) est située sur la plaque dotée de la couche radiante de manière à former, au moyen de chacune de ces cellules (10), un résonateur tridimensionnel dans lequel se trouve au moins un émetteur du type à fente (5 ou 6). La longueur et la largeur de chaque cellule (10) dépassent la longueur d'onde moyenne (lambda), et sa hauteur diffère de la motié de la longueur d'onde moyenne (lambda) d'une valeur d'approximativement 0,02 à 0,07 de la longueur d'onde (lambda). L'antenne comprend également un adaptateur (14) connecté à la couche de blindage (1) et aux bandes (3) de l'alimentation.
EP91921023A 1990-06-13 1991-06-13 Antenne plate Expired - Lifetime EP0489934B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
SU4857338 1990-06-13
SU4857338 RU2016444C1 (ru) 1990-06-19 1990-06-19 Плоская антенна
PCT/SU1991/000117 WO1991020108A1 (fr) 1990-06-19 1991-06-13 Antenne plate

Publications (3)

Publication Number Publication Date
EP0489934A1 true EP0489934A1 (fr) 1992-06-17
EP0489934A4 EP0489934A4 (en) 1992-08-12
EP0489934B1 EP0489934B1 (fr) 1995-02-15

Family

ID=21531078

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91921023A Expired - Lifetime EP0489934B1 (fr) 1990-06-13 1991-06-13 Antenne plate

Country Status (4)

Country Link
EP (1) EP0489934B1 (fr)
DE (1) DE59104606D1 (fr)
RU (1) RU2016444C1 (fr)
WO (1) WO1991020108A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1199772A2 (fr) * 2000-10-16 2002-04-24 Andrew AG Antenne à réseau plane pour des communications point-à-point
EP1608037A1 (fr) * 2004-06-16 2005-12-21 Delphi Technologies, Inc. Antenne planaire incluant un périmètre d'éléments à couplage parasitaire d'amélioration des caractéristiques de rayonnement

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2449435C1 (ru) * 2011-02-07 2012-04-27 Государственное образовательное учреждение высшего профессионального образования Новгородский государственный университет имени Ярослава Мудрого Плоская решетка антенн дифракционного излучения и делитель мощности, используемый в ней
RU2560809C1 (ru) * 2014-02-12 2015-08-20 Открытое акционерное общество "Научно-производственное объединение "Правдинский радиозавод" Способ защиты от ветровых нагрузок на зеркальные антенны радиолокационных станций кругового обзора
RU2709031C1 (ru) * 2019-03-29 2019-12-13 Акционерное общество "Научно-производственное объединение Измерительной техники" (АО "НПО ИТ") Унифицированный антенный модуль

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2523376A1 (fr) * 1982-03-12 1983-09-16 Labo Electronique Physique Element rayonnant ou recepteur de signaux hyperfrequences a polarisations circulaires gauche et droite et antenne plane comprenant un reseau de tels elements juxtaposes
JPH0720008B2 (ja) * 1986-02-25 1995-03-06 松下電工株式会社 平面アンテナ
JPH01103006A (ja) * 1987-10-15 1989-04-20 Matsushita Electric Works Ltd 平面アンテナ
US4926189A (en) * 1988-05-10 1990-05-15 Communications Satellite Corporation High-gain single- and dual-polarized antennas employing gridded printed-circuit elements
JPH01297905A (ja) * 1988-05-26 1989-12-01 Matsushita Electric Works Ltd 平面アンテナ

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9120108A1 *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1199772A2 (fr) * 2000-10-16 2002-04-24 Andrew AG Antenne à réseau plane pour des communications point-à-point
EP1199772A3 (fr) * 2000-10-16 2003-10-15 Andrew AG Antenne à réseau plane pour des communications point-à-point
EP1608037A1 (fr) * 2004-06-16 2005-12-21 Delphi Technologies, Inc. Antenne planaire incluant un périmètre d'éléments à couplage parasitaire d'amélioration des caractéristiques de rayonnement
US7038624B2 (en) 2004-06-16 2006-05-02 Delphi Technologies, Inc. Patch antenna with parasitically enhanced perimeter

Also Published As

Publication number Publication date
EP0489934A4 (en) 1992-08-12
DE59104606D1 (de) 1995-03-23
EP0489934B1 (fr) 1995-02-15
RU2016444C1 (ru) 1994-07-15
WO1991020108A1 (fr) 1991-12-26

Similar Documents

Publication Publication Date Title
DE60009874T2 (de) V-Schlitz-Antenne für zirkulare Polarisation
EP0502818B1 (fr) Antenne plane
DE4239597C2 (de) Ebene Antenne mit dualer Polarisation
EP0042612B1 (fr) Dispositif de changement de la polarisation d'ondes électromagnétiques
DE2727883C2 (de) Hohlleiterstrahler für links- und rechtsdrehend zirkular polarisierte Mikrowellensignale
DE60127438T2 (de) Hochfrequenz-isolationskarte
DE69934824T2 (de) Sehr kompakte und breitbandige planare logperiodische dipol-gruppenantenne
EP1104587B1 (fr) Radiateur plane a large baude
DE3729750A1 (de) Ebene antenne
DE69839348T2 (de) Zweibandantenne
DE2339156A1 (de) Antenne fuer den betrieb in ersten und zweiten frequenzbereichen
DE102009035359A1 (de) Mikrostreifenleiterarrayantenne
DE102011076209B4 (de) Antenne
DE4010101A1 (de) Flachantenne
DE60035304T2 (de) Monopolantenne
DE2821781A1 (de) Hochfrequenzantenne
DE69833070T2 (de) Gruppenantennen mit grosser Bandbreite
EP2375491B1 (fr) Antenne à ondes de fuite
DE102013201222A1 (de) Antennenvorrichtung
DE1945850A1 (de) Richtantenne
DE19615680A1 (de) Strahlender Wellenleiter und Funkübertragungssystem mit einem solchen Wellenleiter
DE4013934A1 (de) Flacher schlitzgruppenstrahler fuer te-modus-welle
DE60019412T2 (de) Antenne mit vertikaler polarisation
EP0489934B1 (fr) Antenne plate
DE3700886A1 (de) Hohlleiterschlitzantenne fuer doppler-navigatoren

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE FR GB

A4 Supplementary search report drawn up and despatched

Effective date: 19920623

AK Designated contracting states

Kind code of ref document: A4

Designated state(s): DE FR GB

17P Request for examination filed

Effective date: 19930615

17Q First examination report despatched

Effective date: 19940429

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

RIN1 Information on inventor provided before grant (corrected)

Inventor name: PANGONIS, LJUDAS IOZOVICH

Inventor name: KOCHESHEV, VIKTOR NIKOLAEVICH

Inventor name: KORSHUNOVA, EVGENIA NIKOLAEVNA

Inventor name: KATSENELENBAUM, BORIS ZAKHAROVICH

Inventor name: VORONOI, VITALY NIKOLAEVICH

Inventor name: BORODIN,JURY FEDOROVICH

Inventor name: ANDRONOV,BORIS MIKHAILOVICH

Inventor name: VOITOVICH,NIKOLAI IVANOVICH

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR GB

REF Corresponds to:

Ref document number: 59104606

Country of ref document: DE

Date of ref document: 19950323

ET Fr: translation filed
GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19950712

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19960614

Year of fee payment: 6

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19960625

Year of fee payment: 6

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19970613

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19970613

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19980227

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19980821

Year of fee payment: 8

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20000503