EP0642189A1 - Antenne für tragbares Funkgerät - Google Patents

Antenne für tragbares Funkgerät Download PDF

Info

Publication number
EP0642189A1
EP0642189A1 EP94401711A EP94401711A EP0642189A1 EP 0642189 A1 EP0642189 A1 EP 0642189A1 EP 94401711 A EP94401711 A EP 94401711A EP 94401711 A EP94401711 A EP 94401711A EP 0642189 A1 EP0642189 A1 EP 0642189A1
Authority
EP
European Patent Office
Prior art keywords
conductor
antenna
edge
antenna according
face
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP94401711A
Other languages
English (en)
French (fr)
Other versions
EP0642189B1 (de
Inventor
Jacques Lourdou
Marc Jarreau
Thierry Jacqueminet
Gérard Legeay
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sagem SA
Original Assignee
SAT (SOCIETE ANONYME DE TELECOMMUNICATIONS) SA
Societe Anonyme de Telecommunications SAT
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 SAT (SOCIETE ANONYME DE TELECOMMUNICATIONS) SA, Societe Anonyme de Telecommunications SAT filed Critical SAT (SOCIETE ANONYME DE TELECOMMUNICATIONS) SA
Publication of EP0642189A1 publication Critical patent/EP0642189A1/de
Application granted granted Critical
Publication of EP0642189B1 publication Critical patent/EP0642189B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • 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
    • 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

Definitions

  • a portable radio device with limited range, it is possible, for example, to consider a mobile radiotelephone terminal such as cellular radiotelephony or proximity radiotelephony.
  • the terminal comprises a box of limited size in which a microphone and an earpiece allow the user to communicate with a remote interlocutor.
  • a radio transceiver circuit connects the microphone and the earpiece to a terminal antenna tuned to the transmit and receive frequencies.
  • the antenna of a radiotelephony terminal is often in the form of a linear conductor connected, at one end, to the transceiver circuit and which projects out of the housing.
  • the antenna can however be retractable to limit its size at rest.
  • This type of antenna has the drawback of substantially increasing the size of the terminal and of requiring, if this is the case, an operation to deploy and fold it back.
  • the present invention aims to provide an antenna for portable radio apparatus, of small size, and requiring no operation.
  • the invention relates to an antenna for portable radio device, comprising a linear conductor arranged to be connected to a radio circuit, characterized in that it comprises a micro-ribbon circuit board carrying, along a edge, a conductive strip constituting, at least partially, the conductor.
  • the micro-ribbon circuit board has a very limited size, which makes it possible to have the antenna in the operating position and, for example, inside the casing of the portable radio device.
  • a conductive link connects the conductor to an opposite edge of the wafer and connection means are provided for connect the end of the conductive link located on the opposite edge to the radio circuit.
  • the conductor extends over one face of the wafer and another conductor is provided which extends in a plane parallel to that of the face considered to cooperate with said conductor.
  • the antenna 1 shown in FIG. 1 is mounted at the end, here upper, of a housing 11 of a mobile radiotelephony terminal and is connected to a radio transmitter-receiver circuit 13.
  • the antenna 1 comprises a section, or plate, of micro-strip circuit (micro-strip), here of rectangular section, consisting of an insulator 2 and, at the edge, of a layer, or strip, of a conductor linear in micro-ribbon 3.
  • micro-strip here of rectangular section, consisting of an insulator 2 and, at the edge, of a layer, or strip, of a conductor linear in micro-ribbon 3.
  • connection of the conductor 3 with the radio circuit 13 is effected by a metallization 4 joining the edge of the plate carrying the conductor 3 to the opposite fixing edge at the end of the housing 11.
  • the plate extends perpendicularly at the transverse end of the housing 11.
  • a connection pad 9, or foot of the antenna 1, allows, by a wire, to connect between the free end of the link 4 to the radio circuit 13.
  • the housing 11 is internally coated with a metallic layer 12 forming a mass and extending, from the base 9 of the antenna 1 to an interruption, over a distance substantially equal to a quarter of the length d operating wave of the antenna 1.
  • This layer 12 serves as a reflector and increases the efficiency of the antenna 1.
  • the housing can be coated with another metallic layer.
  • An insulating coating 10 is also provided, shown in FIG. 1 in a fragmentary manner, covering the housing 11 and which is extended by a solid part 10A forming a radome embedding the antenna 1 and thus protecting it mechanically.
  • the wafer is shown along the edge of the micro-strip circuit, in front view and in rear view.
  • the plate has a front face 21, a rear face 22, here parallel to the front face 21, and two pairs of opposite edges 23, 25 and 24, 26.
  • the edge 25, for attachment to the housing, carries a conductive layer, not shown, forming a ground plane, through which is formed a passage for excitation of the antenna.
  • the plate to fix ideas, can be 45 millimeters long and 20 millimeters wide (height of the antenna). Its thickness, measured perpendicular to the plane of the figures, can be 15 millimeters. Its tuning frequency can be between 100 MHz and a few GHz, for example.
  • the conductor 3 is printed on the face 21, over a certain thickness of the wafer, without reaching the rear face 22, free of any conductor.
  • connection 4 printed along the edge 26 and joining at point A the foot 9 located on the edge 25, here approximately mid-length.
  • the conductor 3 is also extended by a connection 5, opposite the connection 4, printed along the edge 24.
  • conductor 3-5 has a folded whip antenna shape.
  • the width of the conductor 3, in the plane of the figure, has been chosen to be large enough to ensure sufficient efficiency for the antenna 1.
  • the front face of the wafer is quite similar to that of Figure 2, but the ends A and B of the conductor 3-5 can be connected to ground.
  • the rear face 22 of the plate carries another conductor 6, arranged to cooperate with the conductor 3-5.
  • the conductor 6 extends by widening from an excitation end C, at the edge 25, to the opposite edge 23.
  • the excitation end receives an excitation signal from the radio circuit 13 if it transmits, or excites this radio circuit 13 if it is in reception.
  • the conductor 6 When the conductor 6 is excited at C, it in turn excites, by capacitive effect, the conductor 3-5 which then radiates.
  • FIG. 4 represents a substantially T-shaped antenna conductor, the ends of the horizontal bar of which are extended by links along the edges 24 and 26 terminated by ends B and C which can be earthed.
  • the excitation is provided at the foot A of the vertical central bar 4T of the T, on the edge 25.
  • the rear face 22 has no conductor.
  • the front face 21 is substantially similar to that of FIG. 4, while the rear face 22 is practically similar to that of FIG. 3, its conductor 6 being able to be excited by its end D.
  • FIG. 6 represents a saber type antenna, comprising, on the front face 21, conductors along the edges 23, 26 and, partially, 24.
  • the ends B and C of the conductors on these edges can be connected to ground.
  • An excitation link 7 connects one end A, on the edge 25, to, substantially, the junction of the conductors on the edges 23 and 26.
  • the rear face 22 is free of conductor.
  • the front face 21 of the antenna of FIG. 7 is quite similar to that of FIG. 6, without the excitation link 7.
  • the rear face 22 carries another conductor, of end C, of form fairly similar to those Figures 3 and 5.
  • the front face 21 shown in FIG. 8 comprises two conductors 8, 8A coupled, forming a dipole, in the form of adjacent "n" s and arranged symmetrically with respect to an axis of symmetry 1A equidistant from the edges 24 and 26.
  • One, 8 , conductors can be excited by its end B close to the other conductor 8A, the other three ends A, C, D can be grounded.
  • the rear face 22 carries another conductor 8C used to modify the impedance seen by the other two conductors 8, 8A and thus adjust the tuning frequency.
  • FIG. 10 represents a saber type antenna quite similar to that of FIG. 6.
  • a protrusion C of the excitation link close to the excitation end B makes it possible to adapt the antenna, the end A on the edge 26 being grounded.
  • the extension 5 which is capacitively coupled to a conductive pad D printed from the edge formed by the edges 24 and 25.
  • the antenna also of saber type, has substantially the shape of that of FIG. 6. It comprises, as could also all the other embodiments described above, a conductive plate 1C connected to the conductor 3 and extending substantially parallel to the edge 23 along which this conductor 3 extends, perpendicular to the faces 21 and 22. The effect of plate 1C is to increase the bandwidth of antenna 1.
  • Solid conductive elements can also be provided.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Support Of Aerials (AREA)
  • Waveguide Aerials (AREA)
EP19940401711 1993-09-02 1994-07-26 Antenne für tragbares Funkgerät Expired - Lifetime EP0642189B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9310462A FR2709604B1 (fr) 1993-09-02 1993-09-02 Antenne pour appareil radio portatif.
FR9310462 1993-09-02

Publications (2)

Publication Number Publication Date
EP0642189A1 true EP0642189A1 (de) 1995-03-08
EP0642189B1 EP0642189B1 (de) 2003-03-05

Family

ID=9450506

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19940401711 Expired - Lifetime EP0642189B1 (de) 1993-09-02 1994-07-26 Antenne für tragbares Funkgerät

Country Status (3)

Country Link
EP (1) EP0642189B1 (de)
DE (1) DE69432205T2 (de)
FR (1) FR2709604B1 (de)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2727250A1 (fr) * 1994-11-22 1996-05-24 Brachat Patrice Antenne large bande monopole en technologie imprimee uniplanaire et dispositif d'emission et/ou de reception incorporant une telle antenne
WO1996038879A1 (en) * 1995-06-02 1996-12-05 Ericsson Inc. Printed monopole antenna
US5709832A (en) * 1995-06-02 1998-01-20 Ericsson Inc. Method of manufacturing a printed antenna
EP0851533A1 (de) * 1996-12-31 1998-07-01 Nortel Networks Corporation Invertierte E-Typ-Antenne
US5828342A (en) * 1995-06-02 1998-10-27 Ericsson Inc. Multiple band printed monopole antenna
WO1999060662A1 (de) * 1998-05-19 1999-11-25 Robert Bosch Gmbh Antennenanordnung und funkgerät
WO2001008254A1 (en) * 1999-07-22 2001-02-01 Ericsson, Inc. Multiple frequency band branch antennas for wireless communicators
WO2001009976A1 (de) * 1999-07-29 2001-02-08 Siemens Aktiengesellschaft Funkgerät mit einem gehäuse, in das eine hohlform zur aufnahme eines antennenelements integriert ist
WO2001013464A1 (en) * 1999-08-18 2001-02-22 Ericsson, Inc. A dual band bowtie/meander antenna
EP1079463A2 (de) * 1999-08-24 2001-02-28 Rangestar International Corporation Asymmetrische Dipolantennenanordnung
EP1294049A1 (de) * 2001-09-14 2003-03-19 Nokia Corporation Merhrbandantenne mit verbesserter Strahlungseigenschaften

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7183983B2 (en) 2005-04-26 2007-02-27 Nokia Corporation Dual-layer antenna and method

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3984838A (en) * 1975-05-27 1976-10-05 Textron, Inc. Electrically small, double loop low backlobe antenna
WO1985002719A1 (en) * 1983-12-05 1985-06-20 Motorola, Inc. Dual band transceiver antenna
US4849765A (en) * 1988-05-02 1989-07-18 Motorola, Inc. Low-profile, printed circuit board antenna
EP0358529A1 (de) * 1988-09-09 1990-03-14 Bantex Limited Antenne zur Befestigung auf einer nichtleitenden Oberfläche, z.B. auf der Scheibe eines Fahrzeuges
US5138328A (en) * 1991-08-22 1992-08-11 Motorola, Inc. Integral diversity antenna for a laptop computer
EP0531164A1 (de) * 1991-09-04 1993-03-10 Nec Corporation Tragbares Kommunikationsfunkgerät

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3984838A (en) * 1975-05-27 1976-10-05 Textron, Inc. Electrically small, double loop low backlobe antenna
WO1985002719A1 (en) * 1983-12-05 1985-06-20 Motorola, Inc. Dual band transceiver antenna
US4849765A (en) * 1988-05-02 1989-07-18 Motorola, Inc. Low-profile, printed circuit board antenna
EP0358529A1 (de) * 1988-09-09 1990-03-14 Bantex Limited Antenne zur Befestigung auf einer nichtleitenden Oberfläche, z.B. auf der Scheibe eines Fahrzeuges
US5138328A (en) * 1991-08-22 1992-08-11 Motorola, Inc. Integral diversity antenna for a laptop computer
EP0531164A1 (de) * 1991-09-04 1993-03-10 Nec Corporation Tragbares Kommunikationsfunkgerät

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
FUJIMOTO ET AL.: "Small Antennas", 1987, RESEARCH STUDIES PRESS,LETCHFORD,DERTFORTSHIRE,ENGLAND AND JOHN WILEY&SONS, EXETER,GB *

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0714151A1 (de) * 1994-11-22 1996-05-29 France Telecom Breitbandige Monopolantenne in uniplanarer gedruckter Schaltungstechnik und Sende- und/oder Empfangsgerät mit einer derartiger Antenne
FR2727250A1 (fr) * 1994-11-22 1996-05-24 Brachat Patrice Antenne large bande monopole en technologie imprimee uniplanaire et dispositif d'emission et/ou de reception incorporant une telle antenne
US5844525A (en) * 1995-06-02 1998-12-01 Hayes; Gerard James Printed monopole antenna
WO1996038879A1 (en) * 1995-06-02 1996-12-05 Ericsson Inc. Printed monopole antenna
US5709832A (en) * 1995-06-02 1998-01-20 Ericsson Inc. Method of manufacturing a printed antenna
US5828342A (en) * 1995-06-02 1998-10-27 Ericsson Inc. Multiple band printed monopole antenna
US6025805A (en) * 1996-12-31 2000-02-15 Northern Telecom Limited Inverted-E antenna
EP0851533A1 (de) * 1996-12-31 1998-07-01 Nortel Networks Corporation Invertierte E-Typ-Antenne
WO1999060662A1 (de) * 1998-05-19 1999-11-25 Robert Bosch Gmbh Antennenanordnung und funkgerät
US6518922B1 (en) 1998-05-19 2003-02-11 Robert Bosch Gmbh Antenna arrangement and radio device
WO2001008254A1 (en) * 1999-07-22 2001-02-01 Ericsson, Inc. Multiple frequency band branch antennas for wireless communicators
WO2001009976A1 (de) * 1999-07-29 2001-02-08 Siemens Aktiengesellschaft Funkgerät mit einem gehäuse, in das eine hohlform zur aufnahme eines antennenelements integriert ist
WO2001013464A1 (en) * 1999-08-18 2001-02-22 Ericsson, Inc. A dual band bowtie/meander antenna
US6417816B2 (en) 1999-08-18 2002-07-09 Ericsson Inc. Dual band bowtie/meander antenna
EP1079463A2 (de) * 1999-08-24 2001-02-28 Rangestar International Corporation Asymmetrische Dipolantennenanordnung
EP1079463A3 (de) * 1999-08-24 2001-10-10 Rangestar International Corporation Asymmetrische Dipolantennenanordnung
EP1294049A1 (de) * 2001-09-14 2003-03-19 Nokia Corporation Merhrbandantenne mit verbesserter Strahlungseigenschaften
US6552686B2 (en) 2001-09-14 2003-04-22 Nokia Corporation Internal multi-band antenna with improved radiation efficiency

Also Published As

Publication number Publication date
EP0642189B1 (de) 2003-03-05
DE69432205T2 (de) 2004-02-12
FR2709604A1 (fr) 1995-03-10
FR2709604B1 (fr) 1995-10-20
DE69432205D1 (de) 2003-04-10

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