WO1999056345A1 - Dispositif antenne a bande multiple - Google Patents

Dispositif antenne a bande multiple Download PDF

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Publication number
WO1999056345A1
WO1999056345A1 PCT/SE1999/000658 SE9900658W WO9956345A1 WO 1999056345 A1 WO1999056345 A1 WO 1999056345A1 SE 9900658 W SE9900658 W SE 9900658W WO 9956345 A1 WO9956345 A1 WO 9956345A1
Authority
WO
WIPO (PCT)
Prior art keywords
antenna
frequency
multiple band
antenna elements
antenna device
Prior art date
Application number
PCT/SE1999/000658
Other languages
English (en)
Inventor
Hans Norberg
Original Assignee
Intenna Technology Ab
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 Intenna Technology Ab filed Critical Intenna Technology Ab
Priority to EP99947054A priority Critical patent/EP1129503A1/fr
Priority to AU43002/99A priority patent/AU4300299A/en
Publication of WO1999056345A1 publication Critical patent/WO1999056345A1/fr

Links

Classifications

    • 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
    • H01Q1/12—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
    • H01Q1/242—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use
    • H01Q1/243—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use with built-in antennas
    • 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
    • H01Q5/30—Arrangements for providing operation on different wavebands
    • H01Q5/307—Individual or coupled radiating elements, each element being fed in an unspecified way
    • H01Q5/342—Individual or coupled radiating elements, each element being fed in an unspecified way for different propagation modes
    • H01Q5/357—Individual or coupled radiating elements, each element being fed in an unspecified way for different propagation modes using a single feed point
    • H01Q5/364—Creating multiple current paths
    • H01Q5/371—Branching current paths

Definitions

  • the present invention relates to a multiple band antenna device for covering at least two frequency bands, which comprises a plate element, which is made of a dielectric material and on which a first antenna element intended for transmitting and receiving and a second antenna element intended for transmitting and receiving are formed, said antenna elements being situated beside each another in a main direction but having a common feeding point, which is connectable to an antenna terminal of a portable radio communication unit.
  • FIG. 3A An antenna device of this type is shown in Fig. 3A in International Patent Application WO 97/49141.
  • the antenna device in this figure comprises two parallel meander-shaped antenna elements, which are applied on a flexible plate-shaped carrier.
  • the device is said to function well in the shown flat configuration, but is preferably intended to be formed into a cylindrical configuration.
  • double helical antenna i.e. an antenna with two antenna elements heli- cally wound round a common core
  • a cylindrical antenna with the utilised meander-shaped elements has, in a comparable geometric separation, a lower degree of coupling between the individual elements and that this phenomenon is a great functional advantage in separated or wider frequency bands.
  • an object of the present invention is to provide a multiple band antenna de- vice, which thanks to small dimensions and a high efficiency is suitable for use in pocket telephones and which moreover allows solutions with very wide bands in spite of a very low manufacturing cost .
  • a multiple band antenna device of the type mentioned by way of introduction, which is characterised in that the antenna elements are at least partially shaped into acute angles in zigzag, mutually facing acute angles in the two antenna elements within an arbitrary interval, which comprises at least one such acute angle in each antenna element, being displaced in relation to each other in the main direction, the antenna elements in said interval having different ascent, and the antenna elements being so tuned that the first antenna element has a first resonance maximum at a first frequency fl and that the second antenna element has a first resonance maximum at a second frequency f2 , which is at least twice as high as said first frequency fl, the first antenna element having a second resonance maximum at a third frequency f3, which is lower than said second frequency f2.
  • the second frequency f2 is at least 30% higher than twice said first frequency fl to cover a third frequency band.
  • Such an antenna device could be utilised e.g. for covering in an acceptable man- ner the currently used 900 MHz and 1800 MHz frequency bands in GSM systems as well as a future 2400 MHz frequency band.
  • the second frequency f2 is preferably twice as high as or maximally 10% higher than twice said first frequency fl. It will be appreciated that this is a suitable solution, in particular in the GSM field, since there can be a relatively great frequency dispersion on the 1800 MHz frequency band between different countries, but also within some countries, where efforts are made to obtain an increased capacity with the aid of a somewhat wider frequency band round 1800 MHz.
  • a third antenna element which is connected to the common feeding point and at least partially shaped into acute angles in zigzag, can be formed along the main axis beside the second antenna element, mutually facing acute angles in the second and the third antenna element, within an arbitrary interval which comprises at least one such acute angle in each antenna element, being displaced in relation to each other in the main direction, the antenna elements in said interval having different ascent, and the third antenna element being tuned so as to have a resonance maximum at a fourth frequency f4 , which is higher than said second frequency f2.
  • the multiple band antenna device In the multiple band antenna device according to the invention, at least some of the mutually facing acute angles of two adjacent antenna elements can be tangent to or cut, each from one side, an imaginary line substantially parallel to the main direction.
  • the advantage of such an antenna device is that it makes it possible to reduce the dimensions of the antenna device to an abso- lute minimum, which thanks to the selected zigzag configuration does not give rise to any substantial drawbacks in terms of efficiency.
  • At least one of the antenna elements can have a straight portion extending in the main direction between the feeding point and its zigzagged part.
  • the above-mentioned radiated energy is even more concentrated in the acute angles of the antenna element, as these in turn are concentrated in the end of the antenna due to the straight portion, at which end the radiation is always at its maximum. This results in a maximum efficiency at the sacrifice of somewhat greater dimensions of the antenna device and, if several antenna elements have a straight portion, somewhat greater difficulty in tuning the an- tenna elements due to their increased degree of inter- coupling.
  • the zigzagged part of at least one of the antenna elements has an ascent decreasing with an increasing distance from the feeding point . It will be understood that the object also of this solution is to maximise the efficiency of the antenna device by concentrating the radiated energy.
  • the antenna elements on the plate element are preferably formed on a side which is facing away from a keypad side of a pocket telephone, on which the multiple band antenna device is mounted. Since the antenna elements according to the invention are placed on a plate element and this plate element to a certain extent contributes to conferring a certain directionality to the inventive multiple band antenna device, it will be understood that it is suitable in a pocket telephone, where the antenna device is situated in the proximity of the user's head, to use this directionality to direct the radiated microwave energy away from the user.
  • the plate element of a material with a high dielectric constant ⁇ , preferably a ceramic material with ⁇ > 8.0 C/Vm.
  • Figs 1-3 illustrate three different circuitry configurations which are possible for a multiple band antenna device according to the invention
  • Fig. 4 is a front view of a part of a pocket tele- phone with a multiple band antenna device according to the invention mounted on the same;
  • Fig. 5 is a side view of the pocket telephone which includes the multiple band antenna device.
  • Fig. 1 shows a first embodiment of the inventive antenna device 1. It comprises a rectangular, flat plate element 2, which is made of glass fibre and on which circuitry of copper foil has been formed by etching. (The one skilled in the art will understand that neither the described selection of material nor the technique used to form the circuitry is of any vital importance and that, for instance, the plate element could instead be made of Teflon, that aluminium instead could be used in the circuitry and that screen printing could be used instead of etching.)
  • the circuitry consists of a first antenna ele- ment 3, a second antenna element 4 and a so-called feeding point 5, which consists of a straight piece of copper foil along one short side of the rectangular plate ele- ment 2 and which is intended to be connected to the antenna terminal of a pocket telephone in a manner described below in connection with Fig.
  • the antenna elements 3 and 4 extend along a common main direction a, which is parallel to the long sides of the rectangular plate element 2 in the illustrated example. Both of them are shaped into acute angles in zigzag, which in this case means that they are, so to say, folded with acute angles 3.1, 3.2,..., 4.1, 4.2... in the folding points, the folding points of the two antenna elements 3 and 4 not being located straight opposite each other.
  • the two antenna elements 3 and 4 have different length measured from the feeding point 5. This is due to the fact that the antenna element 3 is intended for a lower frequency band and greater wavelengths than the other, shorter antenna element 4.
  • the frequency bands can, for instance, be a 900 MHz frequency band and a twice as high 1800 MHz frequency band for GSM telephony.
  • GSM fre- quency bands it is important for the higher 1800 MHz frequency band to be covered in a wideband manner to suit mobile telephony standards in different countries, i.e. such that a transmitting and receiving range of e.g. 1710 to 1990 MHz is covered in a satisfactory manner.
  • the an- tenna device 1 fulfils these requirements by the first antenna element 3, for instance, being tuned at a first resonance frequency fl of 900 MHz, which generates a second or a harmonic resonance frequency f3 at about 1800 MHz.
  • the second reso- nance frequency is affected by the adjacent second antenna element 4 and therefore tends to be somewhat below twice the first resonance frequency fl, that is somewhat below 1800 MHz in the described example.
  • the second antenna element 4 is therefore tuned so that it has, also under the action of the first antenna element 3, a first resonance frequency 12 which is somewhat higher, preferably maximally 10% higher, than the resonance frequency f3 of the first antenna element 3 at 1800 MHz, which allows the antenna device to cover a very wide band round the frequency 1800 MHz.
  • FIG. 2 shows a second embodiment of an inventive antenna device 1.
  • This one also includes a rectangular plate element 2, on which circuitry of copper foil has been formed by etching.
  • the circuitry consists of a first antenna element 3, a second antenna element 4, a third antenna element 8 and a common feeding point 5.
  • the antenna elements 3, 4 and 8 extend in a common main direction a, the middle antenna element 4 being tangent to and cutting lines 1 parallel to the main direction a with some of its acute angles 4.1, 4.2,....
  • Fig. 3 shows a third embodiment of the inventive antenna device 1. It comprises a rectangular plate element 2 , on which circuitry made of copper foil has been formed by etching.
  • the circuitry consists of a first an- tenna element 3, a second antenna element 4 and a feeding point 5.
  • the antenna elements 3 and 4 extend in a common main direction a, which is parallel to the long sides of the rectangular plate element 2.
  • the antenna elements 3 and 4 have a part which is shaped into acute angles in zigzag and which has the inventive properties, and between this part and the feeding point 5 straight portions 3' and 4' each extending in the main direction a.
  • the straight portion contributes to a great extent to the concentration of the radiated energy in the zigzagged part of the antenna elements, which is further enhanced by the antenna elements 3 and 4 in the zigzagged part having an ascent decreasing with an increasing distance from the feeding point 5. Since the coupling between the two straight and mutually parallel portions 3' and 4' is more distinct, it is an advantage if they are placed as far away from each other as possible in the shown manner.
  • the zigzagged part as shown in connection with the antenna ele- ment 3 has a varying width or diameter which preferably increases with an increasing distance from the feeding point 5.
  • Figs 4 and 5 show a part of a pocket telephone 7, in which an inventive antenna device 1 is included.
  • the pocket telephone 7 On its front side, the pocket telephone 7 has a keypad 9, which in normal use is turned towards a user.
  • the antenna elements 3 and 4 and their common feeding point 5 are, as shown by the side view in Fig. 5, located on the side of the plate elements 2 of the antenna device facing away from the keypad 9.
  • Fig. 5 illustrates the antenna terminal 6 of the pocket telephone in the form of a soldering point which is connected with the feeding point 5.
  • the antenna device 1 can be designed in many different ways within the scope of the invention and that it does not have to include, as in Figs 4 and 5 where it is indicated by dashed lines, a completely flat plate element 2 or be contained in a casing protruding from a pocket telephone. Thus it may very well comprise a creased or otherwise suitably bent plate element 2 and, of course, also be completely integrated in the actual pocket telephone.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Support Of Aerials (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)
  • Waveguide Aerials (AREA)

Abstract

L'invention concerne un dispositif antenne à bande multiple (1) comprenant un élément plat (2) sur lequel sont formés deux éléments antenne (3, 4) destinés à la transmission et à la réception. Ces deux éléments ont un point d'alimentation commun (5) et ont au moins partiellement une forme en zigzag avec des angles aigüs. Les angles aigus (3.1, 3.2, à, 4.1, 4.2, à) des deux éléments antenne (3, 4) qui se font face mutuellement dans un intervalle arbitraire comportant au moins un tel angle aigu (3.1, 3.2, à, 4.1, 4.2, à) de chaque élément antenne (3, 4), sont déplacés les uns par uns par rapport aux autres et ont différents pas. En outre, les éléments antenne (3, 4) sont accordés de telle façon que le premier élément (3) a un premier maximum de résonance à une première fréquence f1 et que le deuxième élément antenne (4) a un premier maximum de résonance à une seconde fréquence f2 qui est au moins égale à deux fois la fréquence f1. Le premier élément antenne (3) a un deuxième maximum de résonance à une troisième fréquence f3, qui est inférieure à la deuxième fréquence f2.
PCT/SE1999/000658 1998-04-24 1999-04-23 Dispositif antenne a bande multiple WO1999056345A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP99947054A EP1129503A1 (fr) 1998-04-24 1999-04-23 Dispositif antenne a bande multiple
AU43002/99A AU4300299A (en) 1998-04-24 1999-04-23 Multiple band antenna device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE9801447-5 1998-04-24
SE9801447A SE513055C2 (sv) 1998-04-24 1998-04-24 Flerbandsantennanordning

Publications (1)

Publication Number Publication Date
WO1999056345A1 true WO1999056345A1 (fr) 1999-11-04

Family

ID=20411082

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE1999/000658 WO1999056345A1 (fr) 1998-04-24 1999-04-23 Dispositif antenne a bande multiple

Country Status (4)

Country Link
EP (1) EP1129503A1 (fr)
AU (1) AU4300299A (fr)
SE (1) SE513055C2 (fr)
WO (1) WO1999056345A1 (fr)

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001048861A1 (fr) * 1999-12-23 2001-07-05 Allgon Ab Procede et ebauches servant a la fabrication d'antennes
WO2001086753A1 (fr) * 2000-05-05 2001-11-15 Bolta-Werke Gmbh Telephone mobile a antenne plate
EP1363355A2 (fr) * 2002-05-15 2003-11-19 Kosan I & T Co., Ltd. Antenne micropuce à double bande
EP1363356A2 (fr) * 2002-05-15 2003-11-19 Kosan I & T Co., Ltd. Antenne micropuce externe à double bande
WO2004057701A1 (fr) * 2002-12-22 2004-07-08 Fractus S.A. Antenne unipolaire multibande pour dispositif de communications mobile
EP1750323A1 (fr) * 2005-08-05 2007-02-07 Sony Ericsson Mobile Communications AB Dispositif d'antenne multibande pour un dispositif de radiocommunication, et dispositif de radiocommunication avec une telle antenne
US7190319B2 (en) 2001-10-29 2007-03-13 Forster Ian J Wave antenna wireless communication device and method
WO2007071830A1 (fr) * 2005-12-22 2007-06-28 Upm Raflatac Oy Procede d’accord de transpondeur et transpondeur
US7417588B2 (en) 2004-01-30 2008-08-26 Fractus, S.A. Multi-band monopole antennas for mobile network communications devices
US7423592B2 (en) 2004-01-30 2008-09-09 Fractus, S.A. Multi-band monopole antennas for mobile communications devices
WO2009089924A1 (fr) * 2008-01-17 2009-07-23 Sony Ericsson Mobile Communications Ab Antenne monopole large bande
US7746285B2 (en) 2001-10-29 2010-06-29 Ian James Forster Wave antenna wireless communication device and method
US8896493B2 (en) 1999-10-26 2014-11-25 Fractus, S.A. Interlaced multiband antenna arrays
US8941541B2 (en) 1999-09-20 2015-01-27 Fractus, S.A. Multilevel antennae
US9099773B2 (en) 2006-07-18 2015-08-04 Fractus, S.A. Multiple-body-configuration multimedia and smartphone multifunction wireless devices
US9331382B2 (en) 2000-01-19 2016-05-03 Fractus, S.A. Space-filling miniature antennas
US9755314B2 (en) 2001-10-16 2017-09-05 Fractus S.A. Loaded antenna

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1985002719A1 (fr) * 1983-12-05 1985-06-20 Motorola, Inc. Antenne d'emetteur-recepteur a bande double
WO1997049141A1 (fr) * 1996-06-15 1997-12-24 Allgon Ab Dispositif d'antenne a meandres

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1985002719A1 (fr) * 1983-12-05 1985-06-20 Motorola, Inc. Antenne d'emetteur-recepteur a bande double
WO1997049141A1 (fr) * 1996-06-15 1997-12-24 Allgon Ab Dispositif d'antenne a meandres

Cited By (39)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9240632B2 (en) 1999-09-20 2016-01-19 Fractus, S.A. Multilevel antennae
US8941541B2 (en) 1999-09-20 2015-01-27 Fractus, S.A. Multilevel antennae
US8976069B2 (en) 1999-09-20 2015-03-10 Fractus, S.A. Multilevel antennae
US10056682B2 (en) 1999-09-20 2018-08-21 Fractus, S.A. Multilevel antennae
US9761934B2 (en) 1999-09-20 2017-09-12 Fractus, S.A. Multilevel antennae
US9000985B2 (en) 1999-09-20 2015-04-07 Fractus, S.A. Multilevel antennae
US9362617B2 (en) 1999-09-20 2016-06-07 Fractus, S.A. Multilevel antennae
US9054421B2 (en) 1999-09-20 2015-06-09 Fractus, S.A. Multilevel antennae
US9905940B2 (en) 1999-10-26 2018-02-27 Fractus, S.A. Interlaced multiband antenna arrays
US8896493B2 (en) 1999-10-26 2014-11-25 Fractus, S.A. Interlaced multiband antenna arrays
WO2001048861A1 (fr) * 1999-12-23 2001-07-05 Allgon Ab Procede et ebauches servant a la fabrication d'antennes
US9331382B2 (en) 2000-01-19 2016-05-03 Fractus, S.A. Space-filling miniature antennas
US10355346B2 (en) 2000-01-19 2019-07-16 Fractus, S.A. Space-filling miniature antennas
WO2001086753A1 (fr) * 2000-05-05 2001-11-15 Bolta-Werke Gmbh Telephone mobile a antenne plate
US9755314B2 (en) 2001-10-16 2017-09-05 Fractus S.A. Loaded antenna
US7190319B2 (en) 2001-10-29 2007-03-13 Forster Ian J Wave antenna wireless communication device and method
US7746285B2 (en) 2001-10-29 2010-06-29 Ian James Forster Wave antenna wireless communication device and method
US7439928B2 (en) 2001-10-29 2008-10-21 Mineral Lassen Llc Wave antenna wireless communication device and method
EP1363355A2 (fr) * 2002-05-15 2003-11-19 Kosan I & T Co., Ltd. Antenne micropuce à double bande
EP1363355A3 (fr) * 2002-05-15 2004-07-21 Kosan I & T Co., Ltd. Antenne micropuce à double bande
EP1363356A3 (fr) * 2002-05-15 2004-07-21 Kosan I & T Co., Ltd. Antenne micropuce externe à double bande
EP1363356A2 (fr) * 2002-05-15 2003-11-19 Kosan I & T Co., Ltd. Antenne micropuce externe à double bande
WO2004057701A1 (fr) * 2002-12-22 2004-07-08 Fractus S.A. Antenne unipolaire multibande pour dispositif de communications mobile
US7411556B2 (en) 2002-12-22 2008-08-12 Fractus, S.A. Multi-band monopole antenna for a mobile communications device
US7403164B2 (en) 2002-12-22 2008-07-22 Fractus, S.A. Multi-band monopole antenna for a mobile communications device
US7417588B2 (en) 2004-01-30 2008-08-26 Fractus, S.A. Multi-band monopole antennas for mobile network communications devices
US7423592B2 (en) 2004-01-30 2008-09-09 Fractus, S.A. Multi-band monopole antennas for mobile communications devices
WO2007017465A1 (fr) * 2005-08-05 2007-02-15 Sony Ericsson Mobile Communications Ab Dispositif d'antenne à bandes multiples pour terminal de radiocommunications et terminal de radiocommunications comprenant le dispositif d'antenne à bandes multiples
EP1750323A1 (fr) * 2005-08-05 2007-02-07 Sony Ericsson Mobile Communications AB Dispositif d'antenne multibande pour un dispositif de radiocommunication, et dispositif de radiocommunication avec une telle antenne
CN101238612B (zh) * 2005-08-05 2013-02-06 索尼爱立信移动通讯股份有限公司 用于无线电通信终端的多频带天线装置和包括多频带天线装置的无线电通信终端
US7605766B2 (en) 2005-08-05 2009-10-20 Sony Ericsson Mobile Communications Ab Multi-band antenna device for radio communication terminal and radio communication terminal comprising the multi-band antenna device
WO2007071830A1 (fr) * 2005-12-22 2007-06-28 Upm Raflatac Oy Procede d’accord de transpondeur et transpondeur
US9899727B2 (en) 2006-07-18 2018-02-20 Fractus, S.A. Multiple-body-configuration multimedia and smartphone multifunction wireless devices
US9099773B2 (en) 2006-07-18 2015-08-04 Fractus, S.A. Multiple-body-configuration multimedia and smartphone multifunction wireless devices
US10644380B2 (en) 2006-07-18 2020-05-05 Fractus, S.A. Multiple-body-configuration multimedia and smartphone multifunction wireless devices
US11031677B2 (en) 2006-07-18 2021-06-08 Fractus, S.A. Multiple-body-configuration multimedia and smartphone multifunction wireless devices
US11349200B2 (en) 2006-07-18 2022-05-31 Fractus, S.A. Multiple-body-configuration multimedia and smartphone multifunction wireless devices
US11735810B2 (en) 2006-07-18 2023-08-22 Fractus, S.A. Multiple-body-configuration multimedia and smartphone multifunction wireless devices
WO2009089924A1 (fr) * 2008-01-17 2009-07-23 Sony Ericsson Mobile Communications Ab Antenne monopole large bande

Also Published As

Publication number Publication date
EP1129503A1 (fr) 2001-09-05
SE9801447D0 (sv) 1998-04-24
SE513055C2 (sv) 2000-06-26
SE9801447L (sv) 1999-10-25
AU4300299A (en) 1999-11-16

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