WO2001003236A1 - Agencement d'antenne et procede - Google Patents

Agencement d'antenne et procede Download PDF

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Publication number
WO2001003236A1
WO2001003236A1 PCT/SE2000/001413 SE0001413W WO0103236A1 WO 2001003236 A1 WO2001003236 A1 WO 2001003236A1 SE 0001413 W SE0001413 W SE 0001413W WO 0103236 A1 WO0103236 A1 WO 0103236A1
Authority
WO
WIPO (PCT)
Prior art keywords
antenna
substrate
arrangement according
antenna arrangement
antenna element
Prior art date
Application number
PCT/SE2000/001413
Other languages
English (en)
Inventor
Tony BJÖRKMAN
Jari Paananen
Original Assignee
Avantego 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
Priority claimed from SE9902564A external-priority patent/SE516245C2/sv
Application filed by Avantego Ab filed Critical Avantego Ab
Priority to AU60417/00A priority Critical patent/AU6041700A/en
Publication of WO2001003236A1 publication Critical patent/WO2001003236A1/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
    • H01Q9/30—Resonant antennas with feed to end of elongated active element, e.g. unipole
    • H01Q9/42—Resonant antennas with feed to end of elongated active element, e.g. unipole with folded element, the folded parts being spaced apart a small fraction of the operating wavelength
    • 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
    • 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
    • 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
    • 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
    • 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
    • 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
    • H01Q9/40—Element having extended radiating surface

Definitions

  • the present invention relates to an antenna arrangement for transmission and/or reception of electromagnetic radiation, and specially to an antenna arrangement for single, dual and/or multi-band frequencies.
  • the invention also concerns a method for manufacturing the antenna arrangement.
  • the wireless forms of communications have become a standard way of communication.
  • means for conducting a wireless communication such as cordless telephones, lap top computers with wireless modems, satellite and cellular telephones.
  • the communication device i.e. the mobile handsets rapidly become smaller and lighter and the globalization demand, multiple communication functions and standards being combined into a single unit, e.g. for communicates in multiple frequency bands.
  • radiotelephone systems there are a variety of different radiotelephone systems in use today. These include different analogue or digital CDMA (Code Division Multiple Access) and TDMA (Time Division Multiple Access) based systems like GSM (Global System for Mobile telecommunication), AMPS (Advanced Mobile Phone System), DAMPS(Digital Advanced Mobile Phone System), PCS (Personal Communication Services), DCS (Digital Communication System) PCN (Personal Communication Networks ), PDC 800 and 1500 and different cordless telephone systems.
  • CDMA Code Division Multiple Access
  • TDMA Time Division Multiple Access
  • GSM Global System for Mobile telecommunication
  • AMPS Advanced Mobile Phone System
  • DAMPS Digital Advanced Mobile Phone System
  • PCS Personal Communication Services
  • DCS Digital Communication System
  • PCN Personal Communication Networks
  • PDC 800 Personal Digital Communication Networks
  • US 5,668,559 concerns an antenna for portable radio devices including a helical antenna coupled at the base to a transmitter/receiver.
  • the pitch of a conductive material helix constituting the helical antenna varies according to the height of the helix. It decreases from the base of the helical antenna towards its top.
  • the antenna comprises a helical antenna and a retractable whip.
  • the helical antenna comprises deposited metal onto a flat and flexible insulative film, whose shape is the developed shape of the final shape required for the helical antenna.
  • the entire antenna is not produced on the one film but on joining together the opposite edges of the film.
  • the film incorporates metal vias and metalized lands around the vias on the side opposite that carrying the pattern to provide electrical continuity.
  • the film is welded to a former of the required shape.
  • a small bulk cylindrical or conical antenna made of a helically wound conductor with a free end and a grounded end is described.
  • the coupling to a power supply or a load circuit is effected along a short length of said conductor near to and terminating on said ground plane, either by direct shunt coupling or by inductive coupling.
  • the grounded end can be provided with a capacitive load.
  • the antennae can be manufactured by sticking a metal strip to a dielectric sheet and rolling the latter to the desired shape, or by printing circuit technique and subsequent winding to said shape, in which they may be kept by clamping, glueing or any other method.
  • WO 98/28814 discloses an antenna operable in two disparate frequency bands, including a first quadrifilar helix having four conductive elements arranged helically to define a cylinder of substantially constant radius, where the first quadrifilar helix is formed of two bifilar helices arranged orthogonally and excited in phase quadrature.
  • a quadrature feed network is connected to the first quadrifilar helix, wherein one end of a coupling element thereof is connected to a first end of each conductive element.
  • the quadrature feed network also includes a first feedpoint for operation of the antenna with circular polarization in a first frequency band and a second feedpoint for operation of the antenna with linear polarization in a second frequency band.
  • the antenna may include a second quadrifilar helix connected to the quadrature feed network and having four conductive elements arranged helically to define a cylinder of substantially constant radius, where the second quadrifilar helix is formed by two bifilar helices arranged orthogonally and excited in phase quadrature.
  • the second quadrifilar helix is wound in opposite sense with respect to the first quadrifilar helix so as to be conductively coupled therewith.
  • US 5,134,422 describes a quadrifilar helical type of antenna, which has at least one radiating cord, helically wound in a rotational shape.
  • the antenna has a circuit for the supply of the radiating cords formed by a strip line type of transmission line which fulfills both the supply distribution function and the function of matching the radiating cords of the antenna.
  • the main objective with the present invention is to overcome the drawbacks inherited from the known antennas, and to provide a non-quadrifilar antenna with enhanced band width while the size and the efficiency are maintained or rather improved.
  • Yet another object of the present invention is to avoid the traditional coil winding and thereby avoid the resulting geometrical and tolerance limitations.
  • the antenna arrangement according to the present invention provides for optimization of impedance match, large bandwidth and high efficiency.
  • the initially described antenna arrangement includes at least one antenna element provided on at least one surface of a substantially flexible substrate.
  • the antenna element is arranged essentially entirely and continuously on the substrate.
  • the antenna element is arranged partly in a diagonal direction of said flexible substrate.
  • said antenna element is arranged partly in a diagonal direction of said flexible substrate having an originating point in a middle section of said substrate.
  • a branching constituting a second antenna element is arranged.
  • the antenna element comprises at least one geometrical shape with varying size.
  • the antenna element may also be curved.
  • the antenna element has at least one signal feeding line on at least one corner section of said substantially flexible substrate.
  • said antenna element is arranged in said diagonal direction at least in one first angel and one second angel relative at least one edge of said substantially flexible substrate.
  • the antenna arrangement comprises a first antenna element having a first length and a second antenna element having a second length.
  • the antenna elements may be arranged on opposites surfaces of the substrate and have feeding points at opposite corners of the substrate.
  • the substrate is deformed and arranged on, inside or embedded in a carrier and advantageously it forms a helix antenna.
  • the carrier may be a casing of the communication apparatus.
  • the antenna arrangement may also cooperate with a whip antenna.
  • the substrate may be arranged with at least one recess.
  • an antenna arrangement for single, dual and/or multi- band frequency including at least one antenna element essentially entirely and continuously arranged on at least one surface of a substantially flexible substrate; the method comprises the steps of: cutting out pieces of substrate in suitable sizes with at least one defined edge; applying metal strip(s) using an appropriate metalization method with respect to said defined edge as reference point; and an additional step of arranging the antenna device comprising the substrate and antenna elements on or inside a carrier for producing a helix antenna, if such an antenna is needed.
  • Fig. 1 is a schematic illustration of a communication device in perspective
  • Fig. 2 is a schematic elevation view of an antenna device according to the present invention
  • Fig. 3 illustrates in a schematic way the antenna device according to fig. 2 wounded on a carrier
  • Figs. 4-9 show additional embodiments of the antenna device according to the invention.
  • the communication device 8 e.g. a mobile station in a cellular communications system such as GSM, is known per se. However, it is arranged with an antenna arrangement 10', preferably arranged inside a cover 9. The antenna arrangement 10 is connected to the transmitting and receiving sections of the communication device according to known technique.
  • the main distinguishing features between the antenna device according to the present invention & and the prior art is that an antenna element is essentially entirely and continuously deposited on a single substrate. Moreover, a number of antenna elements for dual and multi-bands can be arranged on a single substrate.
  • Fig. 2 illustrates the first embodiment according to the present invention.
  • the antenna device 10 comprises a supporting element 11 , preferably a flexible substrate, a first and a second antenna elements 12a, 12b and a feeding line 13.
  • the substrate consists of a suitable dielectric film, which allows folding or winding.
  • the antenna elements 12a and 12b are conductive metallic strips deposited onto the substrate in a suitable metal deposition way, such as silkscreen printing, photolithography or the like.
  • the feeding line 13 is preferably part of the antenna elements or a conductive strip connected to the elements and the transmitter/receiver of the communication device (or other antennas).
  • the antenna according to this embodiment is intended for a dual band application, and therefore it comprises two elements 12a and 12b with different electrical lengths. For a single band antenna only one antenna element is required.
  • the substrate has a rectangular shape.
  • one long edge of the substrate is defined as a main edge and denoted with 15, from which the antenna elements extend; Any edge of the rectangle may however be defined as the main edge.
  • the antenna elements are arranged along the diagonal direction of the substrate, substantially in parallel, having one end connected to the feeding line 13 arranged on one corner section of the substrate at the said main edge and extend towards an opposite corner section.
  • the elements can be arranged on either side of the substrate or extend towards each other from opposite corners (on the same or different faces of the substrate).
  • Fig. 3 illustrates the antenna arrangement 10', e.g. for a mobile telephone device according to fig. 1.
  • the antenna arrangement 10' comprises the antenna device 10 according to fig. 2 wounded on a substantially cylindrical carrier 14, which can be mounted on the telephone 10.
  • the carrier may consist of a plastic cylinder or the like.
  • the antenna device may also be arranged inside the carrier.
  • the substrate may be provided with an adhesive on one surface to simplify the winding.
  • Fig 4 illustrates an antenna device 10 in which the antenna elements 12c, 12d extend in varying directions and have different inclination angles ⁇ , ⁇ , ⁇ ' and ⁇ ' (e.g. with respect to the main edge).
  • the antenna device does not need to be limited to cylindrical carriers and carriers with other cross-sectional shapes, e.g. circular, square, hexagonal etc. can be used, whereby the form of the elements can compensate for the form of the carrier.
  • the antenna may be arranged on, inside or embedded in the casing of the telephone.
  • the substrate can be removed to provide a thin helix (see for example the lower edge of the substrate). It also provides a way for controlling the capacitive coupling of the antenna element.
  • the capacitive coupling may also be controlled through, e.g. different substrate materials, its thickness and the width of the conductive strips.
  • FIG. 5 Another embodiment is illustrated in fig. 5, in which the elements 12e, 12f extend from the center section of the main edge of the substrate 11 in opposite directions.
  • the elements 12e, 12f have different lengths for different frequency bands.
  • the first antenna element 12g is fed from a feeding point 13' not situated on the edge of the substrate 10.
  • the first antenna element 12g branches off into a second element 12h along its length.
  • a further embodiment is illustrated in fig. 7 including two antenna elements 12i and 12j.
  • the first antenna element 12i is arranged as a substantially straight strip but the second antenna element 12j is provided with a curved section, bending over the first antenna element.
  • the antenna elements do not need to be small strips, but can be formed as wider strips with varying shape, as illustrated in figs. 8 and 9.
  • the antenna element 12 according to fig 8 comprises a number of different connected triangular elements with different inclination and sizes for different frequency bands.
  • the antenna element 12' according to fig. 9 has a larger upper section concentrating a larger metal to this section.
  • the antenna arrangement may also be connected to or cooperate with a whip antenna, e.g. arranged adjacent to or in a center section of the helix antenna.
  • the antenna arrangement may also cooperate with a meander antenna.
  • the conductive material in its extension, may have different conductive characteristics.
  • the antenna device according to the invention is simple to manufacture.
  • the process may comprise the following steps:

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Details Of Aerials (AREA)

Abstract

La présente invention concerne un agencement (10) d'antenne non quadrifilaire dans un appareil de communication (8) monofréquence, à deux bandes et/ou multibande. Cet appareil comprend au moins une antenne (12a-12I, 12b-12j) agencée sur au moins une surface d'un substrat (11) sensiblement souple, essentiellement sur ce substrat (11) et de façon continue, et elle présente une forme d'hélice. Cette hélice possède une première et une seconde extrémité, la première extrémité étant une extrémité de l'antenne connectée au niveau d'une partie à une ligne d'alimentation, la seconde partie rayonnant librement.
PCT/SE2000/001413 1999-07-01 2000-07-03 Agencement d'antenne et procede WO2001003236A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU60417/00A AU6041700A (en) 1999-07-01 2000-07-03 Antenna arrangement and method

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
SE9902564A SE516245C2 (sv) 1999-07-01 1999-07-01 Antennanordning för enkel-, dubbel- och/eller flerbandsfrekvenser samt en metod för att framställa en sådan antennanordning
SE9902564-5 1999-07-01
US14533299P 1999-07-23 1999-07-23
US60/145,332 1999-07-23

Publications (1)

Publication Number Publication Date
WO2001003236A1 true WO2001003236A1 (fr) 2001-01-11

Family

ID=26663612

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE2000/001413 WO2001003236A1 (fr) 1999-07-01 2000-07-03 Agencement d'antenne et procede

Country Status (2)

Country Link
AU (1) AU6041700A (fr)
WO (1) WO2001003236A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2821985A1 (fr) * 2001-03-07 2002-09-13 Smarteq Wireless Ab Dispositif de couplage d'antenne
FR2877148A1 (fr) * 2004-10-25 2006-04-28 Univ Rennes I Etablissement Pu Antenne helice imprimee multibande a fente
WO2016007278A1 (fr) * 2014-07-10 2016-01-14 Motorola Solutions, Inc. Système d'antenne multibande
US11251519B2 (en) 2015-11-20 2022-02-15 Shure Acquisition Holdings, Inc. Helical antenna for wireless microphone and method for the same

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3573840A (en) * 1967-12-15 1971-04-06 Onera (Off Nat Aerospatiale) Small bulk helically wound antennae and method for making same
US5134422A (en) * 1987-12-10 1992-07-28 Centre National D'etudes Spatiales Helical type antenna and manufacturing method thereof
US5668559A (en) * 1993-10-14 1997-09-16 Alcatel Mobile Communication France Antenna for portable radio devices
WO1998028814A1 (fr) * 1996-12-24 1998-07-02 Ericsson Inc. Systeme antenne pour satellite double mode/telephone portable cellulaire

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3573840A (en) * 1967-12-15 1971-04-06 Onera (Off Nat Aerospatiale) Small bulk helically wound antennae and method for making same
US5134422A (en) * 1987-12-10 1992-07-28 Centre National D'etudes Spatiales Helical type antenna and manufacturing method thereof
US5668559A (en) * 1993-10-14 1997-09-16 Alcatel Mobile Communication France Antenna for portable radio devices
WO1998028814A1 (fr) * 1996-12-24 1998-07-02 Ericsson Inc. Systeme antenne pour satellite double mode/telephone portable cellulaire

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2821985A1 (fr) * 2001-03-07 2002-09-13 Smarteq Wireless Ab Dispositif de couplage d'antenne
FR2877148A1 (fr) * 2004-10-25 2006-04-28 Univ Rennes I Etablissement Pu Antenne helice imprimee multibande a fente
WO2006045769A1 (fr) * 2004-10-25 2006-05-04 Universite De Rennes 1 Antenne helice imprimee multibande a fente
WO2016007278A1 (fr) * 2014-07-10 2016-01-14 Motorola Solutions, Inc. Système d'antenne multibande
AU2015288275B2 (en) * 2014-07-10 2018-03-01 Motorola Solutions, Inc. Multiband antenna system
US10135139B2 (en) 2014-07-10 2018-11-20 Motorola Solutions, Inc. Multiband antenna system
GB2541852B (en) * 2014-07-10 2021-03-03 Motorola Solutions Inc Multiband antenna system
US11251519B2 (en) 2015-11-20 2022-02-15 Shure Acquisition Holdings, Inc. Helical antenna for wireless microphone and method for the same

Also Published As

Publication number Publication date
AU6041700A (en) 2001-01-22

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