WO2009150609A1 - Antenne en réseau plan en microruban pour télécommunications par satellite, apte à fonctionner à des fréquences de réception et d'émission différentes et avec des polarisations croisées - Google Patents

Antenne en réseau plan en microruban pour télécommunications par satellite, apte à fonctionner à des fréquences de réception et d'émission différentes et avec des polarisations croisées Download PDF

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Publication number
WO2009150609A1
WO2009150609A1 PCT/IB2009/052444 IB2009052444W WO2009150609A1 WO 2009150609 A1 WO2009150609 A1 WO 2009150609A1 IB 2009052444 W IB2009052444 W IB 2009052444W WO 2009150609 A1 WO2009150609 A1 WO 2009150609A1
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WO
WIPO (PCT)
Prior art keywords
radiating elements
antenna
feeding
radiating
elements
Prior art date
Application number
PCT/IB2009/052444
Other languages
English (en)
Inventor
Tindaro Cadili
Carmelo Mollura
Original Assignee
Selex Communications S.P.A.
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 Selex Communications S.P.A. filed Critical Selex Communications S.P.A.
Priority to ES09762136.1T priority Critical patent/ES2552204T3/es
Priority to EP09762136.1A priority patent/EP2304844B1/fr
Publication of WO2009150609A1 publication Critical patent/WO2009150609A1/fr

Links

Classifications

    • 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
    • H01Q9/0428—Substantially flat resonant element parallel to ground plane, e.g. patch antenna radiating a circular polarised wave
    • 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
    • H01Q21/065—Patch antenna array
    • 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

  • Micro-strip planar array antenna for satellite telecommunications adapted to operate at different reception and transmission frequencies and with cross-polarizations
  • the present invention concerns planar antennas, and more specifically a planar array antenna for satellite telecommunications according to the preamble of claim 1.
  • the antennas used for satellite connections must have a high directivity in order to ensure a good quality connection.
  • the directive antenna of the communication apparatus used on board the moving vehicle must ensure that the connection is maintained for the whole time and for every orientation of the vehicle.
  • the antenna must not offer resistance to the motion of the vehicle on which it is installed, and therefore it must have a very small size and a low profile, and it must be able to quickly vary its pointing direction.
  • parabolic antennas which have the best characteristics for respecting the aforementioned radiation needs (directivity), since during the movement of the vehicles they would undergo great stress and it would not be possible to maintain their pointing.
  • the adopted solution is a planar antenna comprising an array of radiating elements with variable phase shift which allow the electronic scanning of the beam on the elevation plane.
  • One exemplary embodiment is a micro-strip planar antenna in printed technology with radiating patch elements.
  • two separate antenna modules are made, one arranged for operating in reception with a first polarization, and one arranged for operating in transmission with a second polarization.
  • EP 0 342 175 discloses a dual-polarized printed circuit array antenna comprising patch radiating elements arranged on two layers, each of which is associated with a radiation polarization. Each layer of radiating elements has a respective feeding distribution layer associated with it, including micro-strip feedlines with which the radiating elements are ca- pacitively coupled. Specifically, the configuration of the antenna patches is such as to allow a circular polarization in a first sense for the radiating elements of a first layer, and a circular polarization in the opposite sense for the radiating elements of the other layer to be obtained.
  • the antenna thus made is adapted to operate in a single transmission band with dual circular polarization thanks to the use of a component outside of the antenna (90° hybrid).
  • the present invention has the purpose of providing a planar array antenna for satellite telecommunications having a greater efficiency in transmission and in reception, compared to known solutions, and a reduced bulk.
  • the present invention is based upon the principle of making a planar array antenna using narrow-band radiating elements, respectively grouped into a set of radiating elements for transmission and a set of radiating elements for reception, intercalated on the same radiation surface, to make an antenna adapted to the most common and typical case of X- band satellite communication.
  • every radiating element would have to be made so as to be adapted to operate over the whole band.
  • the radiating elements are narrow-band elements, for which reason it thus becomes necessary to make two separate antenna modules, one arranged for operating in reception in a first range of frequencies, and one arranged for operating in transmission in a second range of frequencies.
  • the radiating elements in transmission and the radiating elements in reception are mutually affected by being close to each other, and to reduce the coupling problems, different patterns of radiating elements are used, adapted to radiate different polarizations.
  • the radiating elements of the first module are made like square patches with two truncated opposite corners, adapted to radiate a left circular polarization and the radiating elements of the second module are made as circular patches with discontinuities (notches) along the circumference, adapted to radiate a right circular polarization.
  • the electromagnetic currents to the patches are induced by capacitive effect by respective micro-strip circuits through slots made on the ground plane under the patch layer.
  • figure 1 is a plan representation of an antenna according to the invention, comprising a 2x2 array of first radiating elements arranged for transmission, intercalated with a 2x2 array of second radiating elements arranged for reception;
  • figure 2 is a cross-section representation of the antenna according to the invention;
  • figures 3 and 4 show respective embodiments of radiating elements of the antenna;
  • figure 5 is a plan representation of an antenna according to the invention, comprising a 2x8 array of first radiating elements arranged for transmission, intercalated with a 2x8 array of second radiating elements arranged for reception, and respective feeding distribution network.
  • Figure 1 shows a whole module 10, of a planar array antenna, including a transmission module 1OT comprising a 2x2 array of first radiating elements 12T adapted to radiate a left circular polarization, and a reception module 1OR comprising a 2x2 array of second radiating elements 12R adapted to radiate a right circular polarization.
  • a transmission module 1OT comprising a 2x2 array of first radiating elements 12T adapted to radiate a left circular polarization
  • a reception module 1OR comprising a 2x2 array of second radiating elements 12R adapted to radiate a right circular polarization.
  • an X-band antenna is shown, operating in the range of frequencies [7.25 ⁇ 7.75] GHz for reception, and in the range of frequencies [7.9 ⁇ 8.4] GHz for transmission.
  • figure 1 according to a plan view - the intercalated arrangement of the radiating elements 12T, 12R on a radiation surface S of the antenna is shown.
  • the radiating elements 12T, 12R of each module are arranged in a matrix with parallel rows.
  • the parallel rows of the radiating elements of different modules (12T, 12R) are alternated and staggered apart by half a pitch, so that there is a sort of intercalated quincunx arrangement.
  • the multi- layered structure making up the antenna 10 as a whole, including a feeding distribution network F and an array of radiating elements R, is schematically shown in figure
  • the micro-strip distribution network comprises a ground plane 100, a dielectric substrate 110 and conductive tracks 120 arranged according to a predetermined branched configuration for the feeding to a set of radiating elements (12T, 12R) of an antenna module according to a predetermined phase shifting of the signals.
  • the array of radiating elements R in turn comprises a respective ground plane 130 overlapping the distribution network F and separated by it by a dielectric spacer layer 140, a respective dielectric substrate 150 and radiating areas (patches) 160 deposited upon it, possibly protected by an external radome coating layer (not shown) permeable to electromagnetic radiations.
  • the radiating elements 12T used in transmission are preferably made like square areas with a pair of opposite bevelled corners 160', as shown in figure 3, such corners 160' constituting discontinuities adapted to determine a radiation with circular polarization.
  • the radiating elements 12R used in reception are preferably made as circular areas which have a pair of peripheral diametrically opposite incisions 160", as shown in figure 4, the incisions constituting discontinuities adapted to determine a radiation with circular polarization.
  • the 2x2 array arrangement comprises a first pair of diagonally opposite elements (12T or 12R) arranged according to a first orientation and a second pair of diagonally opposite elements (12T or 12R), rotated by 90° with respect to the elements of the first pair.
  • the feeding to the elements 12T, 12R occurs through an elongated slot 200 made on the respective ground plane 130, at which a section of micro-strip line 120 of the feeding network F extends, oriented according to a direction perpendicular to the direction of main ex- tension of the slot 200, so as to induce electromagnetic currents in the corresponding radiating element through the same slot.
  • the slot extends according to a direction angularly misaligned with the discontinuities in shape (bevelled corners, peripheral incisions) of the areas forming the radiating elements, and therefore the radiating elements are asymmetrically shaped with respect to a median axis thereof, coinciding with the direction of the slot extension (or, in equivalent words, with the direction of extension of the section of micro-strip feeding line associated with it), so as to emit electromagnetic radiation according to a circular polarization.
  • any other technique for making a radiating element asymmetrical in order to make it adapted to emit a radiation with circular polarization is applicable to the structure of the radiating elements 12T and 12R used here, providing that the rule of attributing mutually perpendicular polarizations (circular polarizations in opposite senses, perpendicular linear polarizations) to the elements intended for transmission and for reception, is respected.
  • the micro-strip feeding line In proximity of the coupling with the slot 200, the micro-strip feeding line has a widened- section matching stub 220, constituting a portion of open circuit line, adapted to ensure that the energy sent over the feeding line transits mostly over the patch without returning back (reflected wave).
  • an array antenna is schematically shown in plan comprising a 2x8 array of first radiating elements arranged for transmission, intercalated with a 2x8 array of second radiating elements ararnged for reception.
  • the underlying feeding distribution network F and the slots 200 for coupling the feeding network with the radiating elements are also shown.
  • the second row of radiating elements in reception 12R is served by a feeding line 120b also branched so as to feed in phase the elements of the subsets TR1-TR4.
  • the radiating elements distributed along one row are all equiphase, whereas it is possible to control the phase shift between one row and the next through integration of variable phase shifters integrated upstream of the respective feeding lines 120a- 120a', which allow phase differences to be created between one row and the next so that the radiation diagram has a major lobe with pointing different from 0° and strictly connected to the applied phase differences.
  • the use of radiating elements having different shapes allows the isolation between reception and transmission modules to be increased, i.e. the transmitted signal does not interfere with the received one, in the case of simultaneous radiation in the two polarizations.
  • a further advantage is obtained thanks to the successive rotation by 90° of the radiating elements of each module, which allows the radiative performance of the array to be improved in terms of purity of polarization.
  • an antenna thus made can be installed on the roof of a vehicle, so as to allow a satellite radio communication to be made and maintained during the movement of the vehicle.

Landscapes

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

Abstract

L'invention porte sur une antenne en réseau plan en microruban, présentant une surface de rayonnement (S) comprenant des premiers éléments rayonnants (12T) agencés pour fonctionner en émission et des seconds éléments rayonnants (12R) agencés pour fonctionner en réception, ainsi qu'un réseau d'alimentation de signal agencé sur un plan parallèle à la surface de rayonnement (S), comprenant des lignes microrubans (120) couplées de façon capacitive aux éléments mentionnés ci-dessus (12R, 12T). Les premiers et seconds éléments rayonnants (12R, 12T) sont réalisés sur une même surface de rayonnement (S) de l'antenne, selon une configuration intercalée, et sont aptes à fonctionner à des plages de fréquences différentes et à des polarisations perpendiculaires.
PCT/IB2009/052444 2008-06-10 2009-06-09 Antenne en réseau plan en microruban pour télécommunications par satellite, apte à fonctionner à des fréquences de réception et d'émission différentes et avec des polarisations croisées WO2009150609A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
ES09762136.1T ES2552204T3 (es) 2008-06-10 2009-06-09 Antena matricial planar de microcinta para telecomunicaciones por satélite, adaptada para funcionar a diferentes frecuencias de recepción y transmisión y con polarizaciones cruzadas
EP09762136.1A EP2304844B1 (fr) 2008-06-10 2009-06-09 Antenne en réseau plan en microruban pour télécommunications par satellite, apte à fonctionner à des fréquences de réception et d'émission différentes et avec des polarisations croisées

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITTO2008A000447 2008-06-10
ITTO20080447 ITTO20080447A1 (it) 2008-06-10 2008-06-10 Antenna a schiera planare in microstriscia per telecomunicazioni satellitari, atta ad operare a frequenze di ricezione e trasmissione differenti e con polarizzazioni incrociate.

Publications (1)

Publication Number Publication Date
WO2009150609A1 true WO2009150609A1 (fr) 2009-12-17

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2009/052444 WO2009150609A1 (fr) 2008-06-10 2009-06-09 Antenne en réseau plan en microruban pour télécommunications par satellite, apte à fonctionner à des fréquences de réception et d'émission différentes et avec des polarisations croisées

Country Status (4)

Country Link
EP (1) EP2304844B1 (fr)
ES (1) ES2552204T3 (fr)
IT (1) ITTO20080447A1 (fr)
WO (1) WO2009150609A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012167283A2 (fr) * 2011-06-02 2012-12-06 Brigham Young University Alimentation en réseau plan pour communications satellites
US9112262B2 (en) 2011-06-02 2015-08-18 Brigham Young University Planar array feed for satellite communications
WO2016181231A1 (fr) 2015-05-11 2016-11-17 Getsat Communications Ltd. Procédés, circuits, dispositifs, ensembles et systèmes de communication sans fil
EP2784876B1 (fr) * 2011-12-13 2020-05-06 Huawei Technologies Co., Ltd. Dispositif d'antenne, station de base, et système de communication
EP3520174A4 (fr) * 2016-09-29 2020-06-17 Getsat Communications Ltd. Procédés, circuits, dispositifs, ensembles et systèmes pour fournir une antenne active
CN113725629A (zh) * 2021-11-02 2021-11-30 成都雷电微力科技股份有限公司 一种高功率双频双极化瓦式有源相控阵天线

Citations (6)

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Publication number Priority date Publication date Assignee Title
EP0342175A2 (fr) 1988-05-10 1989-11-15 COMSAT Corporation Antenne circuit imprimé à double polarisation dont les éléments, incluant des éléments circuit imprimé en grille, sont couplés capacitivement aux lignes d'alimentation
US5923296A (en) * 1996-09-06 1999-07-13 Raytheon Company Dual polarized microstrip patch antenna array for PCS base stations
WO2002084790A1 (fr) 2001-04-16 2002-10-24 Fractus, S.A. Antenne-reseau double polarisation, double bande
US20060256013A1 (en) 2005-05-13 2006-11-16 Go Networks, Inc Highly isolated circular polarized antenna
WO2006135661A1 (fr) * 2005-06-10 2006-12-21 X-Ether, Inc. Systeme d'antenne de communication par satellite, compact et a faible saillie
US20070216589A1 (en) * 2006-03-16 2007-09-20 Agc Automotive Americas R&D Multiple-layer patch antenna

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0342175A2 (fr) 1988-05-10 1989-11-15 COMSAT Corporation Antenne circuit imprimé à double polarisation dont les éléments, incluant des éléments circuit imprimé en grille, sont couplés capacitivement aux lignes d'alimentation
US5923296A (en) * 1996-09-06 1999-07-13 Raytheon Company Dual polarized microstrip patch antenna array for PCS base stations
WO2002084790A1 (fr) 2001-04-16 2002-10-24 Fractus, S.A. Antenne-reseau double polarisation, double bande
US20060256013A1 (en) 2005-05-13 2006-11-16 Go Networks, Inc Highly isolated circular polarized antenna
WO2006135661A1 (fr) * 2005-06-10 2006-12-21 X-Ether, Inc. Systeme d'antenne de communication par satellite, compact et a faible saillie
US20070216589A1 (en) * 2006-03-16 2007-09-20 Agc Automotive Americas R&D Multiple-layer patch antenna

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
SUMANTYO J T S ET AL: "Dual-band circularly polarized equilateral triangular-patch array antenna for mobile satellite communications", IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, IEEE SERVICE CENTER, PISCATAWAY, NJ, US, vol. 53, no. 11, 1 November 2005 (2005-11-01), pages 3477 - 3485, XP001512744, ISSN: 0018-926X *

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012167283A2 (fr) * 2011-06-02 2012-12-06 Brigham Young University Alimentation en réseau plan pour communications satellites
WO2012167283A3 (fr) * 2011-06-02 2013-01-31 Brigham Young University Alimentation en réseau plan pour communications satellites
US9112270B2 (en) 2011-06-02 2015-08-18 Brigham Young Univeristy Planar array feed for satellite communications
US9112262B2 (en) 2011-06-02 2015-08-18 Brigham Young University Planar array feed for satellite communications
EP2784876B1 (fr) * 2011-12-13 2020-05-06 Huawei Technologies Co., Ltd. Dispositif d'antenne, station de base, et système de communication
WO2016181231A1 (fr) 2015-05-11 2016-11-17 Getsat Communications Ltd. Procédés, circuits, dispositifs, ensembles et systèmes de communication sans fil
CN107851886A (zh) * 2015-05-11 2018-03-27 格赛特通讯有限公司 用于无线通信的方法、电路、设备、组件和系统
EP3295514A4 (fr) * 2015-05-11 2019-01-09 Getsat Communications Ltd. Procédés, circuits, dispositifs, ensembles et systèmes de communication sans fil
EP3520174A4 (fr) * 2016-09-29 2020-06-17 Getsat Communications Ltd. Procédés, circuits, dispositifs, ensembles et systèmes pour fournir une antenne active
CN113725629A (zh) * 2021-11-02 2021-11-30 成都雷电微力科技股份有限公司 一种高功率双频双极化瓦式有源相控阵天线

Also Published As

Publication number Publication date
ES2552204T3 (es) 2015-11-26
EP2304844B1 (fr) 2015-08-12
EP2304844A1 (fr) 2011-04-06
ITTO20080447A1 (it) 2009-12-11

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