EP1540768B1 - Helixförmige breitbandantenne - Google Patents

Helixförmige breitbandantenne Download PDF

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Publication number
EP1540768B1
EP1540768B1 EP03797356A EP03797356A EP1540768B1 EP 1540768 B1 EP1540768 B1 EP 1540768B1 EP 03797356 A EP03797356 A EP 03797356A EP 03797356 A EP03797356 A EP 03797356A EP 1540768 B1 EP1540768 B1 EP 1540768B1
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EP
European Patent Office
Prior art keywords
radiating
parasitic
wires
antenna
strands
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Expired - Lifetime
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EP03797356A
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English (en)
French (fr)
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EP1540768A1 (de
Inventor
Ala Sharaiha
Yoann Letestu
Jean-Christophe Louvigne
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Universite de Rennes 1
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Universite de Rennes 1
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Publication of EP1540768A1 publication Critical patent/EP1540768A1/de
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
    • H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
    • H01Q1/362—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith for broadside radiating helical antennas
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q11/00—Electrically-long antennas having dimensions more than twice the shortest operating wavelength and consisting of conductive active radiating elements
    • H01Q11/02—Non-resonant antennas, e.g. travelling-wave antenna
    • H01Q11/08—Helical antennas

Definitions

  • the field of the invention is that of broadband antennas and hemispherical or quasi-hemispherical radiation pattern. More specifically, the invention relates to helical antennas of this type.
  • the antenna of the invention finds particular applications in the context of mobile satellite communications between fixed users and / or mobiles of any type, for example aeronautical, maritime or terrestrial.
  • satellite communication systems eg INMARSAT, INMARSAT-M, GLOBALSTAR (registered trademarks), .
  • PCS personal communications systems
  • the very different incidences of signals received or emitted require the antennas to have a hemispherical or quasi-hemispherical coverage pattern.
  • the polarization must be circular (left or right) with a ratio of less than 5 dB in the useful band.
  • the invention can find applications in all systems requiring the use of a wide band and a circular polarization.
  • the antennas must in fact have the preceding characteristics either in a very wide bandwidth, of the order of 10% or more, or in two neighboring sub-bands respectively corresponding to the reception and the reception. 'program.
  • a quadrifilar helical antenna is formed of four radiating strands.
  • This antenna called printed quadrifilar helix antenna (HQI)
  • HQI printed quadrifilar helix antenna
  • HQI bilayer antennas These antennas are formed by the concentric "nesting" of two coaxial, electromagnetically coupled, quadrifilar resonant propellers. The assembly functions as two coupled resonant circuits, the coupling of which separates the resonant frequencies. This gives a two-layer resonant quadrifilar helix antenna, according to the technique described in FR - 89 14952 .
  • This technique has the advantage of requiring a single power system, and allowing dual band or wide band operation.
  • the radiating strands are printed on a dielectric substrate of small thickness, and then wound on a cylindrical support that is transparent from the radio point of view.
  • the four strands of the helix are open or short-circuited at one end and electrically connected at the other end.
  • This antenna requires a power supply circuit, which ensures the excitation of the different antenna strands by signals of the same amplitude in phase quadrature.
  • This function can be performed from 3dB -90 ° coupler structures and a hybrid ring.
  • the assembly can be made in printed circuit and placed at the base of the antennas. This gives a simple but bulky power supply.
  • the antenna including its power supply
  • the antenna to be of as small a size and weight as possible, and to have the lowest possible cost.
  • the invention particularly aims to overcome these various disadvantages of the state of the art.
  • an object of the invention is to provide a resonant helical antenna having a wide bandwidth, which can cover, for example, the transmission band and the reception band of a communication system.
  • an object of the invention is to provide such a helical antenna having a large bandwidth (greater than that obtained according to the prior art) in each subband, when two subbands are provided.
  • Another object of the invention is to provide such an antenna whose dimensions, performance and cost are acceptable for portable terminals of terrestrial cellular systems.
  • Another object of the invention is to provide a reduced size antenna while having a broadband operation.
  • An object of the invention is also to provide a relatively simple antenna to manufacture, and therefore low cost.
  • Yet another object of the invention is to provide a technical alternative to the solutions of the prior art.
  • the helical antenna is remarkable in that each of the parasitic strands is connected to the ground.
  • the helical antenna is remarkable in that the radiating strands and the parasitic strands are printed on a substrate.
  • the helical antenna can be made according to a manufacturing method that is simple, effective and at a low cost.
  • the antenna is remarkable in that each of the radiating strands is associated with a parasitic strand of width less than the radiating strand.
  • an inductive behavior corresponding to a radiating strand and in particular to its length
  • an overall capacitive behavior corresponding to the association of a radiating strand and a parasitic strand and depending on the distance between these two strands and the ratio between their width
  • the parasitic strand being preferably of small width.
  • the helical antenna is remarkable in that the ratio between the width of each of the parasitic strands and the width of the associated radiating strand is less than or equal to 0.15.
  • the performance of the antenna is optimal especially in the neighboring bands of 1 GHz.
  • the helical antenna is remarkable in that each of the parasitic strands is positioned relative to the associated radiating strand so as to optimize the coupling between the parasitic strand and the associated radiating strand.
  • a parasitic strand and the associated radiating strand are positioned to optimize the bandwidth, an optimum coupling being, if it exists, depending on the distance separating them.
  • the antenna has a better adaptation.
  • the helical antenna is remarkable in that each of the parasitic strands is further away from the associated radiating strand than from at least one of the other radiating strands.
  • optimization of the coupling between the parasitic strand and the associated radiating strand is often obtained by moving the parasitic strand away from the associated radiating strand; thus, the more the parasitic strand and the associated radiating strand are distant, the wider the radiation band of the antenna.
  • the helical antenna is remarkable in that each of the parasitic strands is parallel to the radiating strand with which it is associated.
  • each of the parasitic strands and associated radiating strands have a capacitive effect.
  • the helical antenna is remarkable in that each of the parasitic strands has substantially the same length as the radiating strand with which it is associated.
  • the antenna is relatively simple to make (and in particular simpler than if the connection to the ground at one end of the parasitic strand was, for example, in the middle of the cylinder).
  • the helical antenna is remarkable in that one of the ends of each of the radiating strands is connected by a conductive connection to one of the ends of the radiating strand to which the parasitic strand is associated.
  • the parasitic strands and the associated radiating strands may be etched on the same side of the substrate, the other side of the substrate then being available for another use (for example, for etching additional strands or another helical antenna ).
  • the helical antenna is remarkable in that one of the ends of each of the radiating strands is connected by coupling to one of the ends of the radiating strand to which the parasitic strand is associated.
  • the helical antenna is remarkable in that the radiating strands are printed on a first face of a substrate and in that the stray strands are printed on a second face of the substrate.
  • the manufacture of the antenna is simplified since the power supply (connected in particular to a radiating strand) and the mass (connected in particular to a parasitic strand) are not necessarily present on the same side of the substrate.
  • Metallic holes allowing the passage of the mass on the side of the power supply are not essential.
  • the helical antenna is remarkable in that at least one parasitic strand and a neighboring radiating strand of the radiating strand to which the parasitic strand is associated overlap.
  • the distance between a parasitic strand and the associated radiating strand is greater than that separating two neighboring radiating strands. This allows in particular to obtain more margin for the adjustment of the coupling between a parasitic strand and the associated radiating strand and thus to find more easily an optimum for improving the bandwidth.
  • the helical antenna is remarkable in that the end of the radiating strands not connected to a parasitic strand is connected to a line of attack of a supply circuit.
  • the helical antenna is remarkable in that at least one of the helices is a quadrifilar helix comprising four strands.
  • the opening of the antenna is very wide, the radiation pattern is almost hemispherical.
  • the helical antenna is remarkable in that the radiating strands forming a helix all have the same dimensions and in that the parasitic strands all have the same dimensions.
  • the strands have the same distribution of current out of phase by 90 °.
  • the helical antenna is remarkable in that at least one of the radiating and / or parasitic strands is formed of at least two segments, the winding angles of at least two of the segments being different and determined randomly or pseudo-randomly using global optimization means.
  • the helical antenna is remarkable in that at least one of the radiating and / or parasitic strands has a variable width, varying regularly and monotonically between a maximum width and a minimum width.
  • the helical antenna is remarkable in that the radiating strands have a length substantially different from a multiple of the wavelength corresponding to the average frequency of the antenna transmission band, divided by 4.
  • Figures 1 and 2 show a conventional quadrilifine helix antenna, as already discussed in the preamble. It comprises four strands 11 1 to 11 4 of length L 2 and width d. These radiating strands are printed on a dielectric substrate 12 of small thickness then wound on a cylindrical support 13 radially transparent, of radius r , circumference c and axial length L1, and ⁇ being the winding angle.
  • the antenna requires a power supply circuit which ensures the excitation of the different strands by signals of the same amplitude and in phase quadrature.
  • This function can be obtained from 3dB -90 ° coupler structures and a hybrid ring, made in a printed circuit and placed at the base of the antennas.
  • FIG. 3 shows an example of a propeller 30 according to the invention, in its expanded form.
  • the HQI antenna 30 thus comprises 4 regularly spaced conducting radiating strands 31 1 to 31 4 , printed on a substrate 32 and having a width equal to Wa.
  • the four strands 31 1 to 31 4 are folded on themselves at one of their end respectively 36 1 to 36 4 , each forming a parasitic strand respectively 34 1 to 34 4 and connected at the other end to the lines of attack of the supply circuit 33.
  • the parasitic strands 34 1 to 34 4 have a width W br less than the width, W a , radiating strands to ensure broadband operation of the antenna.
  • the parasitic strands 34 1 to 34 4 are connected to the ground 35 at the end opposite the end respectively 36 1 to 36 4 .
  • the width, W br , parasitic strands and the width, W a , radiating strands are constant.
  • the antenna 30 is then wound on a cylindrical support, as shown in Figure 4, which has a front view of the antenna wound on its cylindrical support.
  • the antenna band widens as the distance d increases.
  • the parasitic strand is therefore close to the neighboring radiating strand.
  • FIG. 5 shows the measured ROS 52 as a function of the frequency 50 (expressed in GHz in the figure) measured at the input of a radiating strand for the antenna 30 illustrated with reference to FIGS. 3 and 4, the others being charged under 50 ⁇ .
  • the antennas are measured at center frequency F1 equal to 1.5 GHz.
  • the folded-over HQI antenna according to the invention, an adaptation of the HQI antenna of less than -10 dB is obtained over the interval from 1.27 GHz to 1.65 GHz, ie a bandwidth that reaches 26%.
  • the HQI antenna has a significant increase in bandwidth.
  • the folded printed quadrifilar helix antenna which each parasitic strand is connected to ground allows the transmission and / or reception in a wide bandwidth or in two different sub-bands each having a wide bandwidth.
  • the technique of the invention therefore gives a significant increase in the bandwidth.
  • This produces a printed quadrilateral helix antenna operating in a wide bandwidth and / or in two different sub-bands each having a wide bandwidth, and whose height is reduced.
  • the folded quadrifilar helix antenna folded with parasitic strands connected to the ground therefore allows an increase in the bandwidth of the antenna without reducing the lengths of strands.
  • Figure 6 is a Smith chart representing the input impedance 60 of an antenna according to the invention standardized at 50 Ohms.
  • a loop 61 on the curve 60 is derived from the coupling and gives the wide band since present inside a circle 62 corresponding to a ROS less than or equal to 2.
  • FIG. 7a shows an example of a helix 70 according to a variant of the invention, in its developed form.
  • the HQI antenna 70 thus comprises four regularly spaced conductive radiating strands 71 1 to 71 4 printed on a first face of the substrate 72 and of width equal to W a .
  • the four strands 71 1 to 71 4 are connected at one end to the leading lines of the supply circuit 73.
  • Strands 74 1 to 74 4 are printed parallel to the radiating strands on a second face of the substrate 72 opposite the first face.
  • the parasitic strands 74 1 to 74 4 are connected to the ground 75 at one of their end respectively 71 1 to 71 4 .
  • Each of parasitic strands 74 1 to 74 4 is coupled by its end 75 1 to 75 4, respectively, not connected to ground 75, at the end not connected to the supply of strand respectively 71 1 to 71 4 to which it is associated.
  • the parasitic strands 74 1 to 74 4 have a width W br less than or equal to and preferably much lower (in a ratio W br / W a less than 0.15), the width W a , radiating strands in order to guarantee a broadband operation of the antenna.
  • the width, W br, parasitic strands and the width, W a , radiating strands are constant.
  • the distance separating a parasitic strand and the associated radiating strand is not limited by the distance separating two radiating strands.
  • the distance between a parasitic strand and the radiating strand may be greater than the distance separating two radiating strands.
  • the coupling between a parasitic strand and the associated radiating strand and therefore the bandwidth can then be improved. We then have more possibilities in the search for optimum coupling.
  • FIG. 7b illustrates in detail the end 751 of the radiating strand 711 coupled to the parasitic strand 741.
  • each of the parasitic strands and the associated radiating strand overlap on both sides of the substrate 72 over a distance E between 0 and the distance d separating the parasitic strand from the associated radiating strand.
  • the other characteristics of the antenna 70 (winding around a cylindrical support, dimensions of the strands and the antenna, etc.) being similar to that of the antenna 30 of FIGS. 3 and 4, will not be described further. .
  • FIG. 8 shows an example of an antenna 80 according to a variant of the invention according to which radiating strands 81 1 to 81 4 are of variable width.
  • Each of the radiating strands 81 1 to 81 4 is connected at one of its ends to a parasitic strand 84 1 to 84 4 .
  • the width of the parasitic strands is constant and each of the parasitic strands is parallel to a longitudinal median line of the associated radiating strand (illustrated, for example, by the line 87 corresponding to the strand 81 1 ).
  • each of the radiating strands of the antenna 80 has a minimum width W a1 equal to 2 mm and a maximum width W a2 equal to 16 mm.
  • the characteristics of the antenna 80 being similar to those of the antenna 30 illustrated with reference to FIGS. 3 and 4, they will not be described further.
  • the parasitic strands of a helical antenna are coupled and not directly connected to radiating strands of variable width, similar to the strands 81 1 to 81 4 of the antenna 80 (according to a similar coupling to that of the radiating and parasitic strands of the antenna 70).
  • the width of the parasitic strands is variable, the longitudinal median lines of each of the parasitic strands and the associated radiating strand are parallel.
  • the parasitic strands are parallel to one of the sides of the radiating strands.
  • a parasitic strand parallel to an adjacent radiating strand makes it possible, in particular, to move this parasitic strand away from the associated radiating strand while bringing it closer to the adjacent strand, thereby increasing the capacitive effect and the bandwidth of the antenna.
  • the parasitic strands and the radiating strands are connected by a single point of connection.
  • FIG. 9a shows an example of antenna 90 according to another variant of the invention having radiating strands 91 1 to 91 4 forming a broken line.
  • Each of the radiating strands 91 1 to 91 4 is connected at one of its ends to a parasitic strand 94 1 to 94 4 .
  • Each radiating strand 91 1 to 91 4 (or at least some) of the HQI antenna is decomposed into a limited number of segments. According to the mathematical expressions linking the geometrical parameters of a helical antenna, one observes that a modification of the winding angle influences the pitch of the antenna, thus the axial length.
  • the winding angle ⁇ is also a parameter influencing the radiation pattern of an HQI antenna (opening angle at 3dB, ellipticity ratio). Therefore, to choose the different angles ⁇ adequate, a global optimization program such as simulated annealing or the genetic algorithm can be used.
  • the synthesis is performed on the main and crossed polarization radiation diagrams by introducing a template defined by the desired amplitude levels and aperture angles -3dB.
  • this template makes it possible to perfectly control the angles of opening at -3 dB, as well as the rejection of the inverse polarization and therefore the ellipticity ratio.
  • the variables to be optimized are the different winding angles of the strands of the HQI antenna.
  • the algorithm will give the angles ⁇ i optimum.
  • the radiating strands 91 1 and parasite 94 1 and in particular the segments that make up the radiating strand 91 1 are illustrated in more detail with respect to FIG. 9b.
  • the parasitic strand 94 1 is parallel to an inner tangent 97 (i.e. between the radiating strand 91 1 and the associated parasitic strand 94 1 ) of the radiating strand 91 1 .
  • one or more parasitic strands are parallel to an outer tangent (that is to say located on the opposite side to the parasitic strand) of the associated radiating strand (which makes it possible to bring the strand strand closer to a strand adjacent neighbor) or at a median line of the associated radiating strand.
  • one or more parasitic strands form a broken line.
  • each of these parasitic strands has the same number of segments as the associated radiating strand and each of the parasitic strand segments has the same length and is parallel to a corresponding segment on the associated radiating strand (thus, besides a different width, the parasitic strand and the associated radiating strand have the same shape), which makes it possible to position a parasitic strand very close to an adjacent radiating strand.
  • the parasitic strands of a helical antenna are connected by coupling (and not directly) to radiating strands forming a broken line in a manner similar to the coupling connection presented with reference to FIGS. 7a and 7b.
  • the width of the parasitic strands may take any value less than that of an associated radiating strand and preferably of the order of one-eighth that of an associated radiating strand.
  • the invention can be applied to any type of helical antenna, and not only to quadrilateral antennas.
  • the strands do not all have identical dimensions.
  • the antenna is printed flat, then wound on a support to form the antenna.
  • the substrate for receiving the printed elements can be made directly in its final cylindrical form. In this case, the printing of the strands and the feed structure is performed directly on the cylinder.
  • the antenna of the invention also lends itself to the realization of antenna arrays.
  • the technique of the invention is compatible with techniques for reducing the size of the antenna, such as in particular that proposed in the patent application in the patent document.
  • FR-0011830 on behalf of France Telecom (helical antenna with variable pitch) or to increase the bandwidth, for example, according to a technique proposed in the patent document FR-0011843 , on behalf of France Telecom (helical antenna with wide strands variable).
  • the presence of variable pitch and / or the variation of width can be applied on all the strands, or selectively on some of them.

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Claims (14)

  1. Spiralantenne (30, 70, 80, 90) die mindestens eine Spirale aufweist, welche von mindestens zwei abstrahlenden Leitungsgliedern (31, 71, 81, 91) gebildet wird, die jeweils an ein entsprechendes parasitäres Leitungsglied (34, 74, 84, 94) über ein erstes Ende gekoppelt sind, wobei die besagten abstrahlenden Leitungsglieder und die besagten parasitären Leitungsglieder (34, 74, 84, 94) zueinander parallel sind und die gleiche Länge aufweisen,
    dadurch gekennzeichnet, dass die Breite der besagten parasitären Leitungsglieder (34, 74, 84, 94) streng geringer als die Breite der besagten abstrahlenden Leitungsglieder ist sowie dadurch,
    dass der Abstand zwischen einem parasitären Leitungsglied und das abstrahlende Leitungsglied, an welches es gekoppelt ist, größer ist als der Abstand zwischen dem besagten parasitären Leitungsglied und ein benachbartes abstrahlendes Leitungsglied, an das es nicht gekoppelt ist,
    wobei die besagten Abstände senkrecht zu den Achsen der besagten Leitungsglieder gemessen werden.
  2. Spiralantenne nach Anspruch 1, dadurch gekennzeichnet, dass das Verhältnis zwischen der Breite eines jeden der parasitären Leitungsglieder und der Breite des besagten abstrahlenden Leitungsglied, an das es gekoppelt ist, kleiner oder gleich 0,15 ist.
  3. Spiralantenne nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, dass die besagten abstrahlenden Leitungsglieder und die besagten parasitären Leitungsglieder auf ein Substrat (32, 72, 82, 92) aufgedruckt sind.
  4. Spiralantenne nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass jedes der besagten parasitären Leitungsglieder an Masse angeschlossen ist (35, 75, 85, 95).
  5. Spiralantenne nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass jedes der besagten parasitären Leitungsglieder (74) an eines der besagten abstrahlenden Leitungsglieder (31, 71, 81, 91) über eine leitende Verbindung (36, 86, 96) gekoppelt ist.
  6. Spiralantenne nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass jedes der besagten parasitären Leitungsglieder (74) an eines der besagten abstrahlenden Leitungsglieder (31, 71, 81, 91) über eine elektromagnetische Verbindung (36, 86, 96) gekoppelt ist.
  7. Spiralantenne nach den Ansprüchen 3 und 6, dadurch gekennzeichnet, dass die besagten abstrahlenden Leitungsglieder auf einer ersten Fläche eines Substrats aufgedruckt sind und, dass die besagten parasitären Leitungsglieder auf der zweiten Fläche des besagten Substrat aufgedruckt sind.
  8. Spiralantenne nach Anspruch 7, dadurch gekennzeichnet, dass mindestens ein parasitäres Leitungsglied und ein abstrahlendes Leitungsglied, welches mit dem an das besagte parasitäre Leitungsglied gekoppelte abstrahlende Leitungsglied benachbart ist, sich überlappen.
  9. Spiralantenne nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass das zweite Ende der besagten abstrahlenden Leitungsglieder mit einer Vorlaufleitung einer Stromversorgungsschaltung (33, 73, 83, 93) verbunden ist.
  10. Spiralantenne nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, dass mindestens eine der besagten Spiralen eine vieradrige Spirale ist, die vier Leitungsglieder aufweist.
  11. Spiralantenne nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, dass die besagten, eine Spirale bildenden abstrahlenden Leitungsglieder, alle die gleichen Abmessungen aufweisen und, dass die besagten parasitären Leitungsglieder alle die gleichen Abmessungen aufweisen.
  12. Spiralantenne (90) nach einem der Ansprüche 1 bis 11, dadurch gekennzeichnet, dass mindestens eines der besagten abstrahlenden und/oder parasitären Leitungsglieder aus mindestens zwei Segmenten gebildet ist, wobei mindestens zwei dieser Segmente nach unterschiedlichen Winkeln aufgewickelt sind.
  13. Spiralantenne (80) nach einem der Ansprüche 1 bis 12, dadurch gekennzeichnet, dass mindestens eines der besagten abstrahlenden und/oder parasitären Leitungsglieder eine variable Breite aufweist, die gleichmäßig und monoton zwischen einer maximalen Breite und einer minimalen Breite variiert.
  14. Spiralantenne nach einem der Ansprüche 1 bis 13, dadurch gekennzeichnet, dass die besagten abstrahlenden Leitungsglieder eine Länge aufweisen, die merklich von einem Vielfachen der Wellenlänge abweicht, welche der durch 4 geteilten mittleren Frequenz des Sendebandes der besagten Antenne entspricht.
EP03797356A 2002-09-20 2003-09-19 Helixförmige breitbandantenne Expired - Lifetime EP1540768B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR0211696A FR2844923B1 (fr) 2002-09-20 2002-09-20 Antenne helicoidale a large bande
FR0211696 2002-09-20
PCT/FR2003/002774 WO2004027930A1 (fr) 2002-09-20 2003-09-19 Antenne hélicoïdale à large bande

Publications (2)

Publication Number Publication Date
EP1540768A1 EP1540768A1 (de) 2005-06-15
EP1540768B1 true EP1540768B1 (de) 2008-01-16

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US (1) US7525508B2 (de)
EP (1) EP1540768B1 (de)
AT (1) ATE384346T1 (de)
AU (1) AU2003298989A1 (de)
DE (1) DE60318725T2 (de)
FR (1) FR2844923B1 (de)
WO (1) WO2004027930A1 (de)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB0700276D0 (en) * 2007-01-08 2007-02-14 Sarantel Ltd A dielectrically-loaded antenna
FR2916581B1 (fr) * 2007-05-21 2009-08-28 Cnes Epic Antenne de type helice.
US8089421B2 (en) * 2008-01-08 2012-01-03 Sarantel Limited Dielectrically loaded antenna
GB0904307D0 (en) 2009-03-12 2009-04-22 Sarantel Ltd A dielectrically-loaded antenna
US10129929B2 (en) * 2011-07-24 2018-11-13 Ethertronics, Inc. Antennas configured for self-learning algorithms and related methods
US9614293B2 (en) 2012-10-17 2017-04-04 The Mitre Corporation Multi-band helical antenna system
EP3072181B1 (de) * 2013-11-22 2018-06-27 LLC "Topcon Positioning Systems" Kompaktantennensystem mit reduziertem mehrwegeempfang
US10637137B2 (en) * 2015-04-09 2020-04-28 Topcon Positioning Systems, Inc. Broadband helical antenna with cutoff pattern
US10194220B2 (en) * 2017-01-05 2019-01-29 Pulse Finland Oy Antenna apparatus that utilizes a utility line and methods of manufacturing and use
US11183763B2 (en) 2019-12-31 2021-11-23 Atlanta RFtech LLC Low profile dual-band quadrifilar antenna
CN112864594A (zh) * 2021-01-06 2021-05-28 昆山睿翔讯通通信技术有限公司 一种基于sub-6G低频段的毫米波天线
US11437728B1 (en) 2021-03-26 2022-09-06 Atlanta RFtech LLC Multi-band quadrifilar helix slot antenna

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2654554B1 (fr) 1989-11-10 1992-07-31 France Etat Antenne en helice, quadrifilaire, resonnante bicouche.
WO1996034425A1 (en) * 1995-04-26 1996-10-31 Westinghouse Electric Corporation Helical antenna having a parasitic element and a method of using the same
US5838285A (en) * 1995-12-05 1998-11-17 Motorola, Inc. Wide beamwidth antenna system and method for making the same
FR2746547B1 (fr) 1996-03-19 1998-06-19 France Telecom Antenne helice a alimentation large bande integree, et procedes de fabrication correspondants
US5990847A (en) * 1996-04-30 1999-11-23 Qualcomm Incorporated Coupled multi-segment helical antenna
US5986619A (en) * 1996-05-07 1999-11-16 Leo One Ip, L.L.C. Multi-band concentric helical antenna
US6278414B1 (en) * 1996-07-31 2001-08-21 Qualcomm Inc. Bent-segment helical antenna
US6160516A (en) * 1999-10-07 2000-12-12 Motorola, Inc. Dual pattern antenna for portable communications devices
US6229499B1 (en) * 1999-11-05 2001-05-08 Xm Satellite Radio, Inc. Folded helix antenna design
WO2001045208A1 (fr) * 1999-12-15 2001-06-21 Mitsubishi Denki Kabushiki Kaisha Dispositif d'antenne
FR2814286B1 (fr) 2000-09-15 2004-05-28 France Telecom Antenne helice a brins de largeur variable
FR2814285A1 (fr) 2000-09-15 2002-03-22 France Telecom Antenne helicoidale a pas variable, et procede correspondant

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Publication number Publication date
US7525508B2 (en) 2009-04-28
FR2844923B1 (fr) 2006-06-16
ATE384346T1 (de) 2008-02-15
AU2003298989A1 (en) 2004-04-08
DE60318725D1 (de) 2008-03-06
FR2844923A1 (fr) 2004-03-26
WO2004027930A1 (fr) 2004-04-01
DE60318725T2 (de) 2009-01-02
EP1540768A1 (de) 2005-06-15
US20060125712A1 (en) 2006-06-15

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