EP0605338B1 - Streifenleitungsantenne mit zwei Polarisationen und entsprechende Vorrichtung zum Senden/Empfangen - Google Patents

Streifenleitungsantenne mit zwei Polarisationen und entsprechende Vorrichtung zum Senden/Empfangen Download PDF

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Publication number
EP0605338B1
EP0605338B1 EP19930460038 EP93460038A EP0605338B1 EP 0605338 B1 EP0605338 B1 EP 0605338B1 EP 19930460038 EP19930460038 EP 19930460038 EP 93460038 A EP93460038 A EP 93460038A EP 0605338 B1 EP0605338 B1 EP 0605338B1
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EP
European Patent Office
Prior art keywords
slot
hand
resonance
axis
radiation element
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
EP19930460038
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English (en)
French (fr)
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EP0605338A1 (de
Inventor
Jean-Marc Baracco
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.)
Orange SA
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France Telecom SA
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Publication date
Application filed by France Telecom SA filed Critical France Telecom SA
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Anticipated expiration legal-status Critical
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04—Resonant antennas
    • H01Q9/0407—Substantially flat resonant element parallel to ground plane, e.g. patch antenna
    • H01Q9/0414—Substantially flat resonant element parallel to ground plane, e.g. patch antenna in a stacked or folded configuration
    • 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
    • H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04—Resonant antennas
    • H01Q9/0407—Substantially flat resonant element parallel to ground plane, e.g. patch antenna
    • H01Q9/045—Substantially flat resonant element parallel to ground plane, e.g. patch antenna with particular feeding means
    • H01Q9/0457—Substantially flat resonant element parallel to ground plane, e.g. patch antenna with particular feeding means electromagnetically coupled to the feed line

Definitions

  • the field of the invention is that of antennas produced in technology printed and working in frequency reuse by polarization diversity.
  • the invention relates to a double plated antenna polarization, of the type comprising two radiating elements both participating the generation of two microwave waves with distinct linear polarizations, each radiating element being supplied, through at least two cut slots in a ground plane, by two power supplies each corresponding to one of the two separate polarizations.
  • This type of antenna is of great interest for the creation of networks electronically controlled antennas.
  • the invention has many applications, such as for example the creation of antennas to be carried on a satellite. Indeed, in this case, frequency reuse significantly reduces congestion spectral of the antennas used.
  • a known solution of double polarized plated antenna allowing obtaining a large bandwidth, consists in supplying a radiating element, through two coupling slots cut in a ground plane, by two lines each corresponding to one of the two polarizations.
  • This antenna therefore comprises two separate transmission channels, each track being associated with a supply line and a slot.
  • the supply lines are either of the microstrip type, or of the triplate type.
  • the radiating element resonates on the one hand along a first resonance axis perpendicular to the axis of the first slot, and on the other hand along a second resonance axis perpendicular to the axis of the second slot.
  • the intersection of the first and second resonance axes is done at a right angle and defines a center of resonance.
  • This second known antenna also has many disadvantages, and in particular a deflection of the beam, a cross polarization and a coupling between the two ways.
  • each slot Due to the longitudinal offset of each slot, the resonance center of the slots is not aligned with the center of the radiating element. This creates, for the resonator, a phase difference between the two elements constituting this resonator (namely the slot and the radiating element), and therefore a deflection of the beam.
  • each slot causes the appearance of currents which are generators of cross polarization.
  • the invention particularly aims to overcome these various drawbacks of the state of the art.
  • an objective of the invention is to provide a plated antenna to double polarization, of the type comprising at least one radiating element participating in the generation of two distinctly polarized microwave waves, each element radiating being fed, through at least two slots cut in a plane of ground, by two power supplies each corresponding to one of the two polarizations separate, this antenna having a wide bandwidth.
  • the invention also aims to provide such an antenna which allows to greatly reduce the coupling and the level of cross-polarization, and eliminate beam deflection, while maintaining a wide band busy.
  • said first slot being on the one hand centered transversely to said first resonance axis and on the other hand centered longitudinally with respect to said resonance center
  • said second and third slots being on the one hand centered transversely with respect to said second resonance axis and on the other hand placed at equal distance from said resonance center
  • the symmetry of the slits with respect to their resonance axis respective also greatly reduces the coupling between the two channels corresponding to the two polarizations, namely on the one hand the first channel comprising the first supply line and the first slot, and on the other hand the second channel comprising the second supply line and the second and third slots. Indeed, this symmetry eliminates two by two the capacitive couplings between the first slot directed along the second axis of resonance, and the second and third slits directed along the first axis of resonance.
  • the radiating elements both participate in the generation of two distinctly polarized microwave waves, and it is possible to decrease the size of the first slit and increase the frequency decoupling between the two tracks.
  • said resonance center is located on a line of a part perpendicular to the plane or planes containing the said radiating element (s) and on the other hand passing through the center of the said radiating element (s).
  • the length of said first slot is less the length of said second and third slots.
  • said second and third slots are distant from said first slot.
  • This distance of the slots from each other allows also improve the decoupling between the two channels.
  • said slots are shaped substantially rectangular and said radiating elements are substantially shaped square.
  • the invention also relates to a transmission / reception device comprising at least one antenna according to the invention.
  • This device can include several antennas, in particular in the form of networks.
  • the invention therefore relates to a double polarized plated antenna.
  • Figures 1 and 2 respectively show a top view and a view in section of a preferred embodiment of an antenna according to the invention.
  • the first supply line 13 cooperates with the first slot 15.
  • the second supply line 14 comprises two arms 14 A , 14 B , each arm of this second supply line cooperating with one of the second and third slot (namely the first arm, referenced 14 A , with the second slot 16 and the second arm, referenced 14 B , with the third slot 17).
  • the second and third slots 16, 17 are of the same length L2 and parallel to each other.
  • the second axis of resonance 118 is identical to the axis 117 of the first slot 15, and the first axis resonance 116 is identical to the axis 119 of the second and third slots.
  • the intersection of the first and second resonance axes 116, 118 is done at a right angle and defines a center of resonance 120.
  • the first slot 15 is perpendicular to the second and third slots 16, 17, and is placed equidistant from each of the second and third slots 16, 17.
  • the axis 117 of this first slot 15 passes through the center of each of the second and third slots 16, 17.
  • the slots are rectangular and the length L1 of the first slot 15 is less than the length L2 of each of the second and third slots 16, 17.
  • the first and second radiating elements 11, 12 are shaped substantially square. For each of these two elements, we define a center geometric (121 and 122 respectively).
  • the center 121 of the first radiating element 11, the center 122 of the second radiating element 12 and the resonance center 120 of the slots 15, 16, 17 are aligned on a straight line 123 perpendicular to the planes containing the first and second radiating elements 11, 12.
  • the first slot 15 is superimposed with the central area of each of the first and second radiating elements 11, 12.
  • the second and third slots 16, 17 are superimposed with the peripheral zones of the first and second elements radiating 11, 12, these zones being situated on either side of the central zone and distant from it.
  • the first and second supply lines 13, 14 are for example triplate lines. It can also be microstrip lines.
  • Figure 3 presents a logic diagram summarizing the principle of operation of an antenna according to the invention.
  • Such an antenna includes two transmission channels.
  • the antenna emits two waves 31, 32 of the same frequency but with polarizations separate, each polarization corresponding to one of the two transmission.
  • the two separate polarizations are polarizations linear.
  • the first route of transmission is represented by arrows in line full, the second transmission path being represented by dotted arrows.
  • the information of the first transmission channel is provided by the first supply line 33.
  • This first supply line 33 supplies, through the first slot 34, on the one hand the first radiating element 35 and on the other hand the second radiating element 36. These two radiating elements 35, 36 participate in the generation of the first wave 31 having the first polarization.
  • the information of the second transmission channel is provided by the second supply line 37.
  • This second supply line supplies, through the second and third slots 38, 39, on the one hand the first radiating element 35 and on the other hand the second radiating element 36.
  • These two radiating elements 35, 36 participate in the generation of the second wave 32 having the second polarization.
  • Figure 4 shows the decoupling variation curve (in dB) between the two transmission channels as a function of frequency (in GHz).
  • This decoupling is less than -35 dB over the entire bandwidth 41 of two transmission channels, ie between 1.4 GHz and 1.7 GHz approximately.
  • the bandwidth of each transmission path is defined as the set of wave frequencies for which the Stationary Wave Ratio (ROS) is less than 2.
  • This very large decoupling value is due to the topological arrangement coupling slots. Indeed, this symmetrical arrangement eliminates two by two the capacitive couplings between the first slot on the one hand, and the second and third slots on the other hand.
  • Figures 5 and 6 each show the ratio variation curve standing wave (ROS) as a function of frequency, respectively for the first and second transmission path.
  • ROS ratio variation curve standing wave
  • Each of these two curves makes it possible to calculate the passband [f 1 , f 2 ] of a transmission channel, the passband being equal to the frequency band for which the ROS is less than 2.
  • This passband can also s '' expressed as a percentage, obtained by dividing the width (f 2 - f 1 ) of the pass band by the center frequency (f 3 ) of this pass band.
  • the antenna according to the invention has a large bandwidth on each of the two transmission channels.
  • Figure 7 presents the diagram in copolarization of the second channel of transmission of the antenna presented in FIGS. 1 and 2, for an equal frequency at 1.43 GHz.
  • This copolarization diagram includes a plurality of curves represented in a coordinate system whose axes correspond substantially to the axes of resonance of the slots (axes referenced 116, 118 in FIG. 1).
  • Each curve corresponds to a distinct level of field radiated by the antenna.
  • the different possible levels are shown on the table in the figure 9 which indicates the correspondence between the curve references and the values associated radiated field level.
  • the inventors have also shown that the antenna according to the invention avoids the depointing also for all the others bandwidth frequencies.
  • Figure 8 shows the second polarization diagram of the second antenna transmission path shown in Figures 1 and 2, for a frequency equal to 1.43 GHz.
  • This cross-polarized diagram includes, like the diagram in copolarization presented in relation to FIG. 7, a plurality of curves of levels.
  • the preferred embodiment of an antenna according to the invention comprises two radiating elements.
  • the invention is not limited to this single case but relates to also the case where the antenna only comprises a radiating element.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Waveguide Aerials (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)

Claims (9)

  1. Aufgedruckte Antenne mit doppelter Polarisierung, mit mindestens einem Strahlungselement (11, 12), welches zwei Hyperfrequenzwellen mit verschiedenen linearen Polarisierungen erzeugt, wobei das (die) Strahlungselement(e) (11, 12) durch mindestens zwei in einer Massenebene (18) ausgeschnittene Schlitze (15, 16, 17) gespeist wird (werden), über eine erste (13) und eine zweite (14) Speiseleitung, die jeweils einer der verschiedenen Polarisierungen entsprechen, dadurch gekennzeichnet, daß das (die) Strahlungselement(e) (11, 12) jeweils folgendermaßen gespeist wird (werden):
    einerseits durch die erste Speiseleitung (13) durch einen ersten Schlitz (15) und
    andererseits durch die zweite Speiseleitung (14) durch einen zweiten (16) sowie einen dritten (17) Schlitz, wobei diese Schlitze jeweils die gleiche Länge (L2) haben und parallel zueinander sind,
    wobei das (die) Strahlungselement(e) folgendermaßen zur Resonanz kommt (kommen):
    einerseits gemäß einer ersten Resonanzachse (116), die senkrecht zur Achse (117) des ersten Schlitzes (15) steht, und
    andererseits gemäß einer zweiten Resonanzachse (118), die jeweils senkrecht zur Achse (119) des zweiten (16) bzw. dritten (17) Schlitzes steht,
    wobei die erste (116) und die zweite (118) Resonanzachse sich im rechten Winkel schneiden und dabei ein Resonanzzentrum (120) definieren, und dadurch, daß der erste Schlitz (15) einerseits quer zur ersten Resonanzachse (116) und andererseits längs zum Resonanzzentrum (120) zentriert ist und, daß der jeweils zweite (16) und dritte (17) Schlitz einerseits quer zur zweiten Resonanzachse (118) zentriert sind und andererseits in gleichem Abstand zum Resonanzzentrum (120) liegen.
  2. Antenne gemäß Anspruch 1,
    dadurch gekennzeichnet, daß sie ein erstes (11) und ein zweites (12) Strahlungselement umfaßt, wobei das zweite Strahlungselement (12) in einer Ebene liegt, die in etwa parallel zur Ebene des ersten Strahlungselementes (11) liegt, und dadurch, daßdas erste (11) und das zweite (12) Strahlungselement folgendermaßen gespeist werden:
    einerseits über die erste Speiseleitung (13) durch den ersten Schlitz und
    andererseits durch die zweite Speiseleitung (14) durch den zweiten (16) und dritten (17) Schlitz,
    wobei das erste (11) und das zweite (12) Strahlungselement einerseits gemäß der ersten Resonanzachse (116) und andererseits gemäß der zweiten Resonanzachse (118) zur Resonanz kommen.
  3. Antenne gemäß einem der Ansprüche 1 und 2,
    dadurch gekennzeichnet, daß das Resonanzzentrum (120) sich auf einer Geraden (123) befindet, die einerseits senkrecht zur Ebene bzw. zu den Ebenen der Strahlungselemente (11, 12) steht und die andererseits durch den Mittelpunkt (121, 122) des (der) Strahlungselemente(s) (11, 12) verläuft.
  4. Antenne gemäß einem der Ansprüche 1 bis 3,
    dadurch gekennzeichnet, daß die Länge (L1) des ersten Schlitzes (15) kleiner ist als die Länge (L2) des zweiten (16) bzw. des dritten (17) Schlitzes.
  5. Antenne gemäß einem der Ansprüche 1 bis 4,
    dadurch gekennzeichnet, daß der zweite (16) und der dritte (17) Schlitz weit vom ersten Schlitz (15) entfernt sind.
  6. Antenne gemäß einem der Ansprüche 1 bis 5,
    dadurch gekennzeichnet, daß die erste (13) und die zweite (14) Speiseleitung zu der Gruppe gehören, die folgendes umfaßt:
    die Mikroband-Leitungen;
    die dreifach aufgedruckten Leitungen.
  7. Antenne gemäß einem der Ansprüche 1 bis 6,
    dadurch gekennzeichnet, daß die Schlitze (15, 16, 17) in etwa eine rechteckige Form aufweisen.
  8. Antenne gemäß einem der Ansprüche 1 bis 7,
    dadurch gekennzeichnet, daß das (die) Strahlungselement(e) (11, 12) in etwa die Form eines Vierecks aufweist (aufweisen).
  9. Emfpang-/Sendevorrichtung mit mindestens einer Antenne gemäß einem der Ansprüche 1 bis 8.
EP19930460038 1992-12-29 1993-12-20 Streifenleitungsantenne mit zwei Polarisationen und entsprechende Vorrichtung zum Senden/Empfangen Expired - Lifetime EP0605338B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9216048 1992-12-29
FR9216048A FR2700067B1 (fr) 1992-12-29 1992-12-29 Antenne plaquée à double polarisation et dispositif d'émission/réception correspondant.

Publications (2)

Publication Number Publication Date
EP0605338A1 EP0605338A1 (de) 1994-07-06
EP0605338B1 true EP0605338B1 (de) 1999-02-24

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Application Number Title Priority Date Filing Date
EP19930460038 Expired - Lifetime EP0605338B1 (de) 1992-12-29 1993-12-20 Streifenleitungsantenne mit zwei Polarisationen und entsprechende Vorrichtung zum Senden/Empfangen

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EP (1) EP0605338B1 (de)
DE (1) DE69323612T2 (de)
FR (1) FR2700067B1 (de)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07249926A (ja) * 1994-03-09 1995-09-26 Matsushita Electric Works Ltd 平面アンテナ
IT1284996B1 (it) * 1996-09-30 1998-05-28 Italtel Spa Antenna a microstriscia con controllo della direzione dell'asse di massima irradiazione
CA2237648A1 (en) * 1997-07-29 1999-01-29 Noel Mcdonald Dual polarisation patch antenna
DE10114012B4 (de) * 2000-05-11 2011-02-24 Amtran Technology Co., Ltd., Chung Ho Chipantenne
FR2827430A1 (fr) * 2001-07-11 2003-01-17 France Telecom Antenne a couplage reactif comportant deux elements rayonnants
FR2828014B1 (fr) * 2001-07-27 2003-10-31 D Phy Espace Dev De Produits H Antenne
CN102959801A (zh) * 2011-04-19 2013-03-06 华为技术有限公司 一种微带天线
US20140118203A1 (en) * 2012-11-01 2014-05-01 John R. Sanford Coax coupled slot antenna
EP3582326B1 (de) * 2018-06-15 2021-10-06 Nokia Solutions and Networks Oy Antennenkopplung
GB201902620D0 (en) * 2019-02-27 2019-04-10 Secr Defence Dual polarised planar antenna, base station and method of manufacture
CN113519090B (zh) * 2019-03-14 2022-12-27 华为技术有限公司 用于天线元件的馈电方法和馈电结构
CN114597644B (zh) * 2022-03-25 2024-03-29 常熟市泓博通讯技术股份有限公司 28GHz毫米波双极化天线及其阵列

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4903033A (en) * 1988-04-01 1990-02-20 Ford Aerospace Corporation Planar dual polarization antenna
FR2666691B2 (fr) * 1990-07-11 1994-03-04 Ct Reg Innovat Transfert Tech Antenne microonde.
FR2668305B1 (fr) * 1990-10-18 1992-12-04 Alcatel Espace Dispositif d'alimentation d'un element rayonnant fonctionnant en double polarisation.

Also Published As

Publication number Publication date
FR2700067A1 (fr) 1994-07-01
DE69323612D1 (de) 1999-04-01
FR2700067B1 (fr) 1995-03-17
EP0605338A1 (de) 1994-07-06
DE69323612T2 (de) 1999-10-21

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