EP2559102A1 - Direktionale linear polarisierte breitbandantenne mit hoher polarisationsreinheit - Google Patents

Direktionale linear polarisierte breitbandantenne mit hoher polarisationsreinheit

Info

Publication number
EP2559102A1
EP2559102A1 EP11715189A EP11715189A EP2559102A1 EP 2559102 A1 EP2559102 A1 EP 2559102A1 EP 11715189 A EP11715189 A EP 11715189A EP 11715189 A EP11715189 A EP 11715189A EP 2559102 A1 EP2559102 A1 EP 2559102A1
Authority
EP
European Patent Office
Prior art keywords
antenna
polarization
center
elements
printed circuit
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
EP11715189A
Other languages
English (en)
French (fr)
Other versions
EP2559102B1 (de
Inventor
Michel Jousset
Gaetan Guevel
Gaelle Samson
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.)
Thales SA
Original Assignee
Thales 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 Thales SA filed Critical Thales SA
Publication of EP2559102A1 publication Critical patent/EP2559102A1/de
Application granted granted Critical
Publication of EP2559102B1 publication Critical patent/EP2559102B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • H01Q11/10—Logperiodic antennas
    • H01Q11/105—Logperiodic antennas using a dielectric support
    • 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
    • H01Q9/16—Resonant antennas with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole
    • H01Q9/26—Resonant antennas with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole with folded element or elements, the folded parts being spaced apart a small fraction of operating wavelength
    • H01Q9/27—Spiral 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
    • H01Q11/10—Logperiodic antennas
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q19/00—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic
    • H01Q19/02—Details
    • H01Q19/021—Means for reducing undesirable effects
    • H01Q19/028—Means for reducing undesirable effects for reducing the cross polarisation
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
    • H01Q5/10—Resonant antennas
    • H01Q5/15—Resonant antennas for operation of centre-fed antennas comprising one or more collinear, substantially straight or elongated active elements

Definitions

  • the present invention relates to a linear polarization antenna, directive, broadband, high polarization purity.
  • the subject of the present invention is a high-purity polarization antenna (a frequency band that may be greater than the decade) of the printed circuit type, this antenna being able to be integrated into a bi-polarization antenna, and allowing, when it is used in a localization system, to improve the localization performance, particularly at non-zero sites.
  • this antenna In the case where this antenna is of the rectilinear polarization type, its theoretical co-polarization is defined with respect to the geometry of the radiating circuit. In practice, real co-polarization differs from theoretical co-polarization. Polarization purity is defined as the difference between the theoretical polarization and the real co-polarization. It can be measured using the "co-polarization level / cross polarization level" ratio in the geometrical definition plane of the antenna. If the antenna is perfect, this ratio is infinite. In practice, what we are looking for is a ratio generally between 15 dB (for a log-periodic antenna) and 20 dB (for a "sinuous" antenna).
  • the antenna according to the invention is a linear polarization antenna, directive, broadband and high purity polarization, at least one pair of radiating elements printed on a face of a circuit printed, the two elements being symmetrical to each other with respect to the center of the antenna and delimited in their angular extension by two virtual lines passing through the center of the antenna, and it is characterized in that it has radiating elements printed on the other side of the support, these elements being identical to those of the first face, and being deduced by a rotation of 180 ° about an axis passing through the center of the antenna and which is the bisector of the angle at the center of said pair of elements, this central angle being that formed by said two virtual lines, this rotation being followed by a translation over a distance equal to the thickness of the printed circuit.
  • Figure 1 is a plan view of an antenna of the prior art
  • Figure 2 is a plan view of an antenna according to the present invention.
  • the present invention is described below with reference to an antenna operating in rectilinear polarization and "sinuous" radiating elements inscribed in a circle, but it is understood that it is not limited to such a type of antenna. antenna, and that it applies to any antenna with linear radiating elements, radiating in linear polarization, wired geometry, which one seeks to improve the purity of polarization, antenna whose co-polarization is supposed to be rectilinear, broad band or no, which can, if necessary, be the basic element for the design of a bipolarization antenna.
  • the antenna type from which the invention is derived is generally that realized using a single-sided printed circuit manufacturing technology.
  • An example of such an antenna 1 of the prior art is shown in Figure 1. It comprises essentially two radiating elements or sinuous branches 2, 3 symmetrical to each other with respect to the geometric center O of the assembly. It is well heard that this antenna could include two other branches.
  • the layout of the radiating elements of a so-called "sinuous" antenna is well known, for example according to US Pat. No. 4,658,262, it will not be described in more detail here. It will be specified only here that the two arms 2, 3 are symmetrical to one another with respect to the center 0. These two arms are delimited in their angular extension a by two virtual lines A, B passing through the center O of the 'antenna.
  • the antenna 4 of the invention is of the double-sided printed circuit type.
  • Figure 2 has been shown as if the printed circuit on which the radiating elements are formed was transparent.
  • the first face which is assumed to be the anterior face, has the same branches 2, 3 as those of FIG. 1.
  • the posterior face of the printed circuit comprises the branches 4,5, whose shapes and dimensions are identical to those of FIGS. branches 2, 3.
  • the location of the branches 4, 5 is deduced from that of the branches 2, 3 by rotation of 180 ° about an axis C passing through the center O and which is the bisector of the angle in the center has branches 2, 3.
  • rotation 180 ° about an axis C passing through the center O and which is the bisector of the angle in the center has branches 2, 3.
  • the outline of the branches 4, 5 is obtained by rotation of the branches 2, 3 around the center O by an angle of value equal to (180 ° +), then by the same translation.
  • the outline of the branches 4, 5 is obtained by rotation of the branches 2, 3 around the center O by an angle of value equal to (180 ° +), then by the same translation.
  • only one of the pairs is considered for rotation.
  • the invention makes it possible to improve the polarization purity of the antenna by more than 10 dB relative to the geometry on a single-sided printed substrate. More generally, it makes it possible to obtain an improvement in the polarization purity of all the geometries of planar wire antennas (log-periodic and other type antennas). Applied to bipolarisation antennas, it improves the coupling between the two radiating elements.

Landscapes

  • Variable-Direction Aerials And Aerial Arrays (AREA)
  • Details Of Aerials (AREA)
  • Waveguide Aerials (AREA)
EP11715189.4A 2010-04-13 2011-04-07 Direktionale linear polarisierte breitbandantenne mit hoher polarisationsreinheit Active EP2559102B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1001549A FR2958804B1 (fr) 2010-04-13 2010-04-13 Antenne a polarisation rectiligne, directive, large bande, a grande purete de polarisation.
PCT/EP2011/055419 WO2011128243A1 (fr) 2010-04-13 2011-04-07 Antenne a polarisation rectiligne, directive, large bande, a grande purete de polarisation

Publications (2)

Publication Number Publication Date
EP2559102A1 true EP2559102A1 (de) 2013-02-20
EP2559102B1 EP2559102B1 (de) 2014-01-22

Family

ID=43513949

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11715189.4A Active EP2559102B1 (de) 2010-04-13 2011-04-07 Direktionale linear polarisierte breitbandantenne mit hoher polarisationsreinheit

Country Status (5)

Country Link
US (1) US8976073B2 (de)
EP (1) EP2559102B1 (de)
ES (1) ES2450125T3 (de)
FR (1) FR2958804B1 (de)
WO (1) WO2011128243A1 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI499127B (zh) 2012-05-11 2015-09-01 Wistron Corp 天線結構
KR101667969B1 (ko) * 2015-12-04 2016-10-20 경남정보대학교 산학협력단 저입력 임피던스 2-암 슬롯 시누어스 안테나

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2454401A1 (de) * 1974-11-16 1976-05-20 Licentia Gmbh Breitbandantenne kleiner abmessungen
US4658262A (en) * 1985-02-19 1987-04-14 Duhamel Raymond H Dual polarized sinuous antennas
US6211839B1 (en) * 1988-08-22 2001-04-03 Trw Inc. Polarized planar log periodic antenna
US5146234A (en) * 1989-09-08 1992-09-08 Ball Corporation Dual polarized spiral antenna
US6731248B2 (en) * 2002-06-27 2004-05-04 Harris Corporation High efficiency printed circuit array of log-periodic dipole arrays
US6922179B2 (en) * 2003-11-17 2005-07-26 Winegard Company Low profile television antenna
US7609220B2 (en) * 2005-05-09 2009-10-27 The Regents Of The University Of California Channelized log-periodic antenna with matched coupling

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2011128243A1 *

Also Published As

Publication number Publication date
FR2958804A1 (fr) 2011-10-14
ES2450125T3 (es) 2014-03-24
EP2559102B1 (de) 2014-01-22
US8976073B2 (en) 2015-03-10
WO2011128243A1 (fr) 2011-10-20
FR2958804B1 (fr) 2012-04-27
US20130207864A1 (en) 2013-08-15

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