EP1466384A1 - Dispositif pour la reception et/ou l emission d ondes e lectromagnetiques a diversite de rayonnement - Google Patents
Dispositif pour la reception et/ou l emission d ondes e lectromagnetiques a diversite de rayonnementInfo
- Publication number
- EP1466384A1 EP1466384A1 EP03718817A EP03718817A EP1466384A1 EP 1466384 A1 EP1466384 A1 EP 1466384A1 EP 03718817 A EP03718817 A EP 03718817A EP 03718817 A EP03718817 A EP 03718817A EP 1466384 A1 EP1466384 A1 EP 1466384A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- slot
- antenna
- line
- supply line
- monopoly
- 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
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
- H01Q3/24—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the orientation by switching energy from one active radiating element to another, e.g. for beam switching
-
- 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
- H01Q9/30—Resonant antennas with feed to end of elongated active element, e.g. unipole
- H01Q9/32—Vertical arrangement of element
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
- H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
- H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
-
- 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
-
- 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
- H01Q13/106—Microstrip slot antennas
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/28—Combinations of substantially independent non-interacting antenna units or systems
Definitions
- the present invention relates to a device for the reception and / or emission of electromagnetic waves with diversity of radiation usable in the field of wireless transmissions, in particular in the case of transmissions in closed or semi-closed environments such as networks. domestic wireless, gymnasiums, television studios, theaters or the like but also in wireless communication systems requiring minimal space for the antenna system such as in mobile telephony.
- the signals transmitted by the transmitter reach the receiver along a plurality of distinct paths.
- the phase differences between the different rays having traveled paths of different lengths give rise to an interference pattern capable of causing fading or significant degradation of the signal.
- the location of the fainting changes over time, depending on changes in the environment, such as the presence of new objects or the passage of people. These fading due to multipaths can cause significant degradations both in terms of the quality of the received signal and in terms of system performance.
- This technique consists inter alia in using a pair of antennas with large spatial coverage such as two antennas of the patch or “patch” type associated with a switch.
- the two antennas are spaced apart by a length which must be greater than or equal to ⁇ O / 2 where ⁇ O is the wavelength corresponding to the operating frequency of the antenna.
- ⁇ O is the wavelength corresponding to the operating frequency of the antenna.
- the switch it is possible to select the branch connected to the antenna having the highest signal level by examining the signal received via a control circuit.
- the main drawback of this solution is that it is relatively bulky, since it requires minimum spacing between the radiating antennas to ensure sufficient decorrelation of the channel responses seen through each radiating element.
- the present invention therefore aims to propose a new solution for a device for the reception and / or emission of electromagnetic waves with diversity of radiation having an extremely compact structure while giving radiation patterns having very good complementarity. It also makes it possible to obtain a device for the reception and / or the emission of electromagnetic waves with diversity of radiation having a relatively low manufacturing cost.
- the subject of the present invention is a device for the reception and / or emission of electromagnetic waves with radiation diversity, characterized in that it comprises, on a common substrate, at at least one antenna of the slot type constituted by a closed curve, electromagnetically coupled to a first supply line and an antenna having a radiation parallel to the substrate such as a monopole, a helix operating in transverse mode or the like, positioned inside of the slot type antenna and connected to a second supply line, said first and second supply lines being connected by means of a switching means to means for operating the electromagnetic waves.
- the device for the reception and / or the emission of electromagnetic waves described above uses the fact that the antennas of the slot type constituted by a closed curve called hereinafter antennas of the slot type as well as the antennas of the monopoly or helix type operating in transverse mode present quasi-omnidirectional radiation patterns with minima situated respectively in the plane of the substrate for the slot type antenna and along the axis of the monopoly or of the helix for the other antenna.
- antennas of the slot type constituted by a closed curve called hereinafter antennas of the slot type as well as the antennas of the monopoly or helix type operating in transverse mode present quasi-omnidirectional radiation patterns with minima situated respectively in the plane of the substrate for the slot type antenna and along the axis of the monopoly or of the helix for the other antenna.
- the first supply line is made in microstrip technology or in coplanar technology.
- the second supply line is made using microstrip technology or by a coaxial line.
- connection is formed at the level of the slot type antenna between the external part and the internal part of the slot, this connection being constituted, for example, by a conductive insert having an equal width. about two to three times the width of the line produced in microstrip technology, so as not to disrupt the operation of the exciting microstrip line.
- this connection is made in an electric short-circuit plane for the slot which is therefore the plane of crossing of the excitation microstrip line of the monopole or helix type antenna and of the slot type antenna.
- the slot type antenna is constituted by an annular slot of circular shape or constituted by a closed curve with a perimeter equal to k' ⁇ s where k 'is an integer and ⁇ s the wavelength in the slot at the operating frequency and or by a polygonal slot such as square or rectangular.
- the device for the reception and / or the emission of electromagnetic waves with diversity of radiation can comprise several antennas of slot type nested one inside the other so as to widen the band of operating or enabling multiband applications.
- FIGS. 2 and 3 are respectively a sectional and top view of the first embodiment
- FIGS. 4 and 5 represent in perspective the radiation diagram of the monopoly and the radiation diagram of the slot for a device according to FIGS. 1 to 3,
- FIG. 6 shows a curve giving the parameters S in dB as a function of the frequency between the different "ports" for a device according to Figures 1 to 3
- - Figure 7 is a sectional view of a second embodiment of the present invention
- FIG. 8 is a curve identical to that of FIG. 6 for the second embodiment
- the device for receiving and / or transmitting electromagnetic waves consists essentially of a slot-type antenna 1 formed of a closed curve, more particularly an annular slot, and by a antenna 2 having radiation parallel to the plane of the slot, namely a monopoly in the embodiment shown.
- the monopoly 2 is positioned at the center of the annular slot 1.
- the device of the present invention comprises a substrate made of dielectric material 3, the upper face of which has been metallized.
- the annular slot 1 is produced by de-metallization of the metal layer 4 according to a circle of diameter as a function of the operating wavelength of the device, more particularly the perimeter is equal to k' ⁇ s where ⁇ s is the wavelength in the slot at the operating frequency and k 'an integer.
- a circular opening 5 of diameter D is provided in the center of the annular slot.
- This opening receives in its central part the monopoly 2 which also passes through the substrate 3.
- Under the monopoly 2 is provided, on the underside of the substrate 3, an annular metal patch 5 for fixing.
- the annular slot 1 is excited according to the method described by Knorr, by a microstrip line 6 connected to the "port 1".
- the monopoly 2 is excited by a microstrip line 7.
- a connection is made between the inner disc and the outer ring constituting the annular slot 1.
- This connection is made at using a conductive insert 8 of width w sufficiently wide (width equal to approximately 2 to 3 times the width of the printed excitation line) so as not to disturb the operation of the excitation microstrip line.
- this is produced in an electric short-circuit plane for the slot, which will therefore be the plane of intersection of the excitation line of the monopoly and of the annular slot.
- the annular slot 1 and the monopoly 2 present quasi-omnidirectional and relatively complementary radiation patterns insofar as the minima m are located respectively in the plane of the substrate (in this case according to the 'axis ox) for the annular slot and along the axis of the monopoly (in this case the oz axis) for the latter.
- a switching device well known to those skilled in the art, such as a switch positioned between the supply lines 6 and 7 and the part of signal processing, controlled by a control signal such as signal level, signal-to-noise ratio or similar
- a control signal such as signal level, signal-to-noise ratio or similar
- Symmetric reasoning can be done in the case where the dominant signal arrives along the oz axis, for example in the case of a multi-stage communication.
- the coupling between the annular slot 1 and the monopoly 2 remains reduced taking into account: i) the complementarity of the radiation patterns (the directions of the maxima of one are in the direction of the minima of the other) ii) the orthogonality of the fields emitted by the slot and the monopoly.
- FIG. 6 shows the simulation results of the reflection coefficients at the input of the lines supplying the annular slit (S11) and the monopoly (S22) as well as the coupling coefficient (S21) between the 2 ports 1 and 2.
- S11 annular slit
- S22 monopoly
- S21 coupling coefficient
- the radiation patterns obtained at the monopoly and annular slot access respectively are those represented in FIGS. 4 and 5.
- the antenna system works as desired, or therefore with quasi-omni-directional diagrams, complementary with minima along the oz axis for the monopoly and the ox axis for the annular slot.
- the monopoly is excited by a coaxial line connected at the level of the port 2.
- the excitation of the monopoly is done on the side of the ground plane 9 of the substrate.
- the ground plane 9 is produced on the underside of the substrate 3.
- the antenna formed by the annular slot 1 is formed in this ground plane.
- the supply line formed by a microstrip line 6 is then produced by the upper face of the substrate, the excitation taking place as in the previous embodiment.
- the substrate used is Rogers 4003, of relative permittivity
- FIG. 8 The adaptations to the two ports as well as the insulation between the two ports are shown in Figure 8.
- the curve S21 shows good insulation while the curves S11 and S22 show a good adaptation to the operating frequency of 5.8 GHz.
- Figures 9 and 10 show the radiation diagrams of the device for receiving and / or transmitting electromagnetic waves described above, respectively at the slot and monopoly ports. It can be seen that the excitation by coaxial line of the monopoly which has the advantage of avoiding the crossing between the excitation line of the monopoly and the slot antenna, has better insulation (insulation greater than 22 dB) than in the case of excitation by microstrip line and the monopoly diagram is no longer distorted. This advantage is obtained at the expense of a complexification of the antenna structure, (slot and monopoly access on opposite faces of the substrate and of different types: coaxial line and microstrip line).
- the slot can also be square, rectangular or according to other polygons while remaining within the framework of the definition given above.
- the monopoly or the propeller can be replaced by antennas of the same type which can be placed at the center of the slot antenna and having a radiation parallel to the substrate.
- the feed line of the slot type antenna can be produced by a line in microstrip technology or in coplanar technology.
- the slot-type antenna may be provided with means enabling it to operate in crossed polarizations, such as notches in the case of an annular slot.
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Waveguide Aerials (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
Description
Claims
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0200665 | 2002-01-14 | ||
FR0200665A FR2834836A1 (fr) | 2002-01-14 | 2002-01-14 | Dispositif pour la reception et/ou l'emission d'ondes electromagnetiques a diversite de rayonnement |
FR0201562 | 2002-02-08 | ||
FR0201562A FR2834837A1 (fr) | 2002-01-14 | 2002-02-08 | Dispositif pour la reception et/ou l'emission d'ondes electromagnetiques a diversite de rayonnement |
PCT/FR2003/000065 WO2003061062A1 (fr) | 2002-01-14 | 2003-01-10 | Dispositif pour la reception et/ou l'emission d'ondes electromagnetiques a diversite de rayonnement |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1466384A1 true EP1466384A1 (fr) | 2004-10-13 |
EP1466384B1 EP1466384B1 (fr) | 2005-11-16 |
Family
ID=26213327
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03718817A Expired - Lifetime EP1466384B1 (fr) | 2002-01-14 | 2003-01-10 | Dispositif pour la reception et/ou l emission d ondes e lectromagnetiques a diversite de rayonnement |
Country Status (9)
Country | Link |
---|---|
US (1) | US7088302B2 (fr) |
EP (1) | EP1466384B1 (fr) |
JP (1) | JP4118813B2 (fr) |
KR (1) | KR100982180B1 (fr) |
CN (1) | CN100362694C (fr) |
AU (1) | AU2003222863A1 (fr) |
DE (1) | DE60302331T2 (fr) |
FR (1) | FR2834837A1 (fr) |
WO (1) | WO2003061062A1 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3329548A4 (fr) * | 2015-07-29 | 2018-12-05 | Samsung Electronics Co., Ltd. | Antenne interne de dispositif d'affichage |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2858468A1 (fr) * | 2003-07-30 | 2005-02-04 | Thomson Licensing Sa | Antenne planaire a diversite de rayonnement |
JP4332494B2 (ja) * | 2004-12-22 | 2009-09-16 | アルプス電気株式会社 | アンテナ装置 |
US8723746B1 (en) * | 2009-10-01 | 2014-05-13 | Rockwell Collins, Inc. | Slotted ground plane antenna |
US8749439B2 (en) * | 2012-03-19 | 2014-06-10 | The Mitre Corporation | Ultra-high frequency (UHF)-global positioning system (GPS) integrated antenna system for a handset |
US9570799B2 (en) | 2012-09-07 | 2017-02-14 | Ruckus Wireless, Inc. | Multiband monopole antenna apparatus with ground plane aperture |
CN105051975B (zh) | 2013-03-15 | 2019-04-19 | 艾锐势有限责任公司 | 用于双频带定向天线的低频带反射器 |
US9431712B2 (en) * | 2013-05-22 | 2016-08-30 | Wisconsin Alumni Research Foundation | Electrically-small, low-profile, ultra-wideband antenna |
USD780128S1 (en) * | 2015-09-04 | 2017-02-28 | Lutron Electronics Co., Inc. | Wireless control device |
USD780129S1 (en) * | 2015-09-04 | 2017-02-28 | Lutron Electronics Co., Inc. | Wireless control device |
WO2017075401A1 (fr) * | 2015-10-30 | 2017-05-04 | Lutron Electronics Co., Inc. | Dispositif de communication sans fil à double antenne dans un système de commande de charge |
CN110323558B (zh) * | 2018-03-30 | 2023-08-18 | 普罗斯通信技术(苏州)有限公司 | 一种宽带偶极子 |
CN110504526B (zh) * | 2018-05-18 | 2022-03-04 | 华为技术有限公司 | 天线装置和终端 |
USD906373S1 (en) * | 2018-06-28 | 2020-12-29 | Robot Corporation | Robotic lawnmower having antenna thereon |
CN110212291B (zh) * | 2019-07-17 | 2023-07-28 | 福州大学 | 一种应用于卫星导航终端的方形六臂缝隙螺旋天线 |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
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JPS606127B2 (ja) * | 1977-09-07 | 1985-02-15 | 三菱電機株式会社 | 十字スロツトアンテナ |
US4587524A (en) * | 1984-01-09 | 1986-05-06 | Mcdonnell Douglas Corporation | Reduced height monopole/slot antenna with offset stripline and capacitively loaded slot |
JP2537390B2 (ja) * | 1988-12-23 | 1996-09-25 | 原田工業株式会社 | プレ―ンアンテナ |
FR2648626B1 (fr) * | 1989-06-20 | 1991-08-23 | Alcatel Espace | Element rayonnant diplexant |
FR2651926B1 (fr) * | 1989-09-11 | 1991-12-13 | Alcatel Espace | Antenne plane. |
US5402138A (en) * | 1991-05-30 | 1995-03-28 | Conifer Corporation | Integrated MMDS/MDS antenna and dual band down converter |
US5402136A (en) * | 1991-10-04 | 1995-03-28 | Naohisa Goto | Combined capacitive loaded monopole and notch array with slits for multiple resonance and impedance matching pins |
US5402132A (en) * | 1992-05-29 | 1995-03-28 | Mcdonnell Douglas Corporation | Monopole/crossed slot single antenna direction finding system |
US5300936A (en) * | 1992-09-30 | 1994-04-05 | Loral Aerospace Corp. | Multiple band antenna |
JPH07170118A (ja) * | 1993-07-01 | 1995-07-04 | Commonw Sci & Ind Res Org <Csiro> | 平面アンテナ |
JP2950459B2 (ja) * | 1994-02-09 | 1999-09-20 | エヌ・ティ・ティ移動通信網株式会社 | アンテナ装置 |
JPH07183716A (ja) * | 1993-12-22 | 1995-07-21 | Mitsubishi Electric Corp | ダイバーシティアンテナおよびダイバーシティアンテナを搭載したコードレス電話機 |
KR100355263B1 (ko) * | 1995-09-05 | 2002-12-31 | 가부시끼가이샤 히다치 세이사꾸쇼 | 동축공진형슬롯안테나와그제조방법및휴대무선단말 |
US6160512A (en) * | 1997-10-20 | 2000-12-12 | Nec Corporation | Multi-mode antenna |
-
2002
- 2002-02-08 FR FR0201562A patent/FR2834837A1/fr active Pending
-
2003
- 2003-01-10 WO PCT/FR2003/000065 patent/WO2003061062A1/fr active IP Right Grant
- 2003-01-10 EP EP03718817A patent/EP1466384B1/fr not_active Expired - Lifetime
- 2003-01-10 KR KR1020047010717A patent/KR100982180B1/ko active IP Right Grant
- 2003-01-10 JP JP2003561040A patent/JP4118813B2/ja not_active Expired - Fee Related
- 2003-01-10 AU AU2003222863A patent/AU2003222863A1/en not_active Abandoned
- 2003-01-10 US US10/501,111 patent/US7088302B2/en not_active Expired - Lifetime
- 2003-01-10 DE DE60302331T patent/DE60302331T2/de not_active Expired - Lifetime
- 2003-01-10 CN CNB038022397A patent/CN100362694C/zh not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO03061062A1 * |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3329548A4 (fr) * | 2015-07-29 | 2018-12-05 | Samsung Electronics Co., Ltd. | Antenne interne de dispositif d'affichage |
US10153808B2 (en) | 2015-07-29 | 2018-12-11 | Samsung Electronics Co., Ltd. | Internal antenna of display |
US10574299B2 (en) | 2015-07-29 | 2020-02-25 | Samsung Electronic Co., Ltd. | Internal antenna of display |
Also Published As
Publication number | Publication date |
---|---|
US20050083236A1 (en) | 2005-04-21 |
US7088302B2 (en) | 2006-08-08 |
WO2003061062A1 (fr) | 2003-07-24 |
DE60302331D1 (de) | 2005-12-22 |
FR2834837A1 (fr) | 2003-07-18 |
CN100362694C (zh) | 2008-01-16 |
DE60302331T2 (de) | 2006-07-27 |
CN1615561A (zh) | 2005-05-11 |
AU2003222863A1 (en) | 2003-07-30 |
JP2005537693A (ja) | 2005-12-08 |
EP1466384B1 (fr) | 2005-11-16 |
JP4118813B2 (ja) | 2008-07-16 |
KR20040071300A (ko) | 2004-08-11 |
KR100982180B1 (ko) | 2010-09-14 |
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