EP0642189B1 - Antenne pour appareil radio portatif - Google Patents
Antenne pour appareil radio portatif Download PDFInfo
- Publication number
- EP0642189B1 EP0642189B1 EP19940401711 EP94401711A EP0642189B1 EP 0642189 B1 EP0642189 B1 EP 0642189B1 EP 19940401711 EP19940401711 EP 19940401711 EP 94401711 A EP94401711 A EP 94401711A EP 0642189 B1 EP0642189 B1 EP 0642189B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- antenna
- conductor
- edge
- face
- board
- 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.)
- Expired - Lifetime
Links
Images
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, for example, consider a mobile radio terminal such as the cellular radiotelephony or proximity radiotelephony.
- the terminal includes a box of limited size in which a microphone and earphone allow user to communicate with a remote contact.
- a radio transceiver circuit connects the microphone and earpiece to a terminal antenna tuned to transmit and receive frequencies.
- the antenna of a radiotelephony terminal is often present under shape of a linear conductor connected at one end to the circuit transceiver and which protrudes out of the housing.
- the antenna can however be retractable to limit the size at rest.
- This type of antenna has the drawback of significantly increasing the size of the terminal and to require, if this is the case, a maneuver to deploy and fold it back.
- the present invention aims to provide an antenna for radio apparatus portable, compact, and requiring no maneuver.
- the invention relates to an antenna for a portable radio device. according to claim 1.
- the micro-ribbon circuit board has a very limited space requirement, which allows to have the antenna in the operating position and, by example, inside the case of the portable radio device.
- the antenna 1 shown in Figure 1 is mounted at the end, here upper, of a housing 11 of a mobile radiotelephony terminal and is connected to a radio transceiver circuit 13.
- the antenna 1 comprises a section, or plate, of micro-ribbon circuit (micro-strip), here of rectangular section, consisting of an insulator 2 and, in border, of a layer, or strip, of a linear conductor in microstrip 3.
- micro-strip micro-ribbon circuit
- connection of the conductor 3 with the radio circuit 13 is carried out by metallization 4 joining the edge of the plate carrying the conductor 3 at the opposite fixing edge at the end of the housing 11.
- the plate extends perpendicular to 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 foot 9 of antenna 1 until an interruption, over a substantially equal distance at a quarter of the operating wavelength of antenna 1.
- This layer 12 serves as a reflector and increases the efficiency of antenna 1. Beyond of this interruption, the case can be coated with another layer metallic.
- An insulating coating 10 is also provided, shown in FIG. 1 of fragmentary, covering the housing 11 and which is extended by a massive part 10A forming a radome drowning the antenna 1 and protecting it so mechanically.
- the plate is shown along the edge of the micro-strip circuit, in front and rear view.
- the brochure includes 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.
- Edge 25, for fixing to the housing, carries a conductive layer, not shown, forming a plane of mass, through which a passage is provided for the excitation of the antenna.
- the plate to fix ideas, can be 45 millimeters long and 20 millimeters wide (antenna height). Its thickness, measured perpendicular to the plane of the figures, can be 15 millimeters.
- Her tuning frequency can be between 100 MHz and a few GHz, for example.
- the conductor 3 is printed on the face 21, on a certain thickness of the insert, without reaching the rear face 22, free of all driver.
- the conductor 3 continues with the link 4 printed along the edge 26 and joining at point A foot 9 located on edge 25, here approximately at mid-length.
- the conductor 3 is also extended by a connection 5, opposite at connection 4, printed along edge 24.
- conductor 3-5 has an antenna shape whip folded.
- the width of the conductor 3, in the plane of the figure, has been chosen large enough to ensure sufficient efficiency for antenna 1.
- the front face of the plate is quite similar to that of Figure 2, but ends A and B of conductor 3-5 can be connected to ground.
- the rear face 22 of the wafer carries another conductor 6, arranged to cooperate with conductor 3-5.
- Conductor 6 extends and widens from one end C excitation, at edge 25, to opposite edge 23.
- the excitation end receives a radio circuit 13 excitation signal 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 excites at in turn, by capacitive effect, the driver 3-5 which then radiates.
- FIG. 4 represents a substantially T-shaped antenna conductor, whose ends of the horizontal bar are extended by links the along edges 24 and 26 terminated by ends B and C which can be grounded.
- Excitement is provided at foot A of the central bar vertical 4T of the T, on the edge 25.
- the rear face 22 has no driver.
- the front face 21 is substantially similar to that of the Figure 4, while the rear face 22 is practically similar to that of Figure 3, its conductor 6 can be excited by its end D.
- FIG. 6 represents a saber type antenna, comprising, on the face before 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 the mass.
- 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 face rear 22 is free of driver.
- the front face 21 of the antenna of FIG. 7 is quite similar to that of Figure 6, without the excitation link 7.
- the rear face 22 carries another conductor, of end C, of a shape fairly similar to those of FIGS. 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" and arranged symmetrically about an axis of symmetry 1A equidistant from the edges 24 and 26.
- One, 8, of the conductors can be excited by its end B next to the other conductor 8A, the other three ends A, C, D that 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 frequency of agreement.
- Figure 10 shows a saber type antenna quite similar to that in Figure 6.
- An outgrowth C of the excitation bond 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 printed conductive pad D from the edge formed by edges 24 and 25.
- the antenna also of saber type, has substantially the shape of that of the figure 6. It includes, as could all other forms of previously described embodiment, a conductive plate 1C connected to the conductor 3 and extending substantially parallel to edge 23 along from which this conductor 3 extends, perpendicular to the faces 21 and 22.
- the plate 1C has the effect of increasing the bandwidth of the antenna 1.
- Provision may be made to remove dielectric material in order to modify the radiation characteristics of the antenna. Provision may also be made massive conductive elements.
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Support Of Aerials (AREA)
- Waveguide Aerials (AREA)
Description
- la figure 1 représente schématiquement l'antenne de l'invention, montée sur un boítier de terminal mobile de radiotéléphonie ;
- les figures 2 à 10 représentent les faces avant et arrière de diverses formes de réalisation de l'antenne de l'invention et
- la figure 11 représente la face avant et le côté gauche d'une autre forme de réalisation de l'antenne.
Claims (5)
- Antenne pour appareil radio-portatif comportant un conducteur linéaire (3) agencé pour être relié à un circuit radio (13), caractérisée par le fait qu'elle comporte une plaquette de circuit micro-ruban portant une bande conductrice, constituant au moins partiellement ledit conducteur (3), qui s'étend sur une première face (21) de la plaquette et le long d'un premier (23) de ses bords opposé à un second (25) de ses bords, portant un plan de masse et adjacent à ladite première face (21), et un autre conducteur (6) s'étend sur une seconde face (22) de la plaquette, parallèle à ladite première face (21) dudit conducteur (3), pour être excité et exciter par effet capacitif ledit conducteur (3).
- Antenne selon la revendication 1, dans laquelle une liaison conductrice (4, 4T) relie le conducteur (3) audit second bord (25) de la plaquette.
- Antenne selon la revendication 2, dans laquelle il est prévu des moyens de raccordement (9) pour relier au circuit radio (13) l'extrémité de la liaison conductrice (4) située sur ledit second bord (25).
- Antenne selon l'une des revendications 1 à 3, dans laquelle ledit conducteur (3) se prolonge (4) le long d'un troisième (26) des bords de la plaquette.
- Antenne selon l'une des revendications 1 à 4, dans laquelle il est prévu une couche conductrice (12) pour constituer un plan réflecteur s'étendant, depuis un pied (9) de l'antenne, sur une distance sensiblement égale au quart de la longueur d'onde de fonctionnement de l'antenne.
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 EP0642189A1 (fr) | 1995-03-08 |
EP0642189B1 true EP0642189B1 (fr) | 2003-03-05 |
Family
ID=9450506
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19940401711 Expired - Lifetime EP0642189B1 (fr) | 1993-09-02 | 1994-07-26 | Antenne pour appareil radio portatif |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0642189B1 (fr) |
DE (1) | DE69432205T2 (fr) |
FR (1) | FR2709604B1 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7183983B2 (en) | 2005-04-26 | 2007-02-27 | Nokia Corporation | Dual-layer antenna and method |
Families Citing this family (11)
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 |
CN1191635A (zh) * | 1995-06-02 | 1998-08-26 | 艾利森公司 | 多频带印刷单极天线 |
US5709832A (en) * | 1995-06-02 | 1998-01-20 | Ericsson Inc. | Method of manufacturing a printed antenna |
JPH11506280A (ja) * | 1995-06-02 | 1999-06-02 | エリクソン インコーポレイテッド | プリント単極アンテナ |
GB9627091D0 (en) * | 1996-12-31 | 1997-02-19 | Northern Telecom Ltd | An inverted E antenna |
DE19822371B4 (de) * | 1998-05-19 | 2018-03-08 | Ipcom Gmbh & Co. Kg | Antennenanordnung und Funkgerät |
US6239765B1 (en) * | 1999-02-27 | 2001-05-29 | Rangestar Wireless, Inc. | Asymmetric dipole antenna assembly |
US6198442B1 (en) * | 1999-07-22 | 2001-03-06 | Ericsson Inc. | Multiple frequency band branch antennas for wireless communicators |
WO2001009976A1 (fr) * | 1999-07-29 | 2001-02-08 | Siemens Aktiengesellschaft | Appareil radio avec boitier comportant un corps creux destine a accueillir un element d'antenne |
CN1378712A (zh) | 1999-08-18 | 2002-11-06 | 艾利森公司 | 一种双频段蝴蝶结/曲折天线 |
US6552686B2 (en) * | 2001-09-14 | 2003-04-22 | Nokia Corporation | Internal multi-band antenna with improved radiation efficiency |
Family Cites Families (6)
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 |
US4571595A (en) * | 1983-12-05 | 1986-02-18 | Motorola, Inc. | Dual band transceiver antenna |
US4849765A (en) * | 1988-05-02 | 1989-07-18 | Motorola, Inc. | Low-profile, printed circuit board antenna |
GB8821171D0 (en) * | 1988-09-09 | 1988-10-12 | Bantex Ltd | Antenna |
US5138328A (en) * | 1991-08-22 | 1992-08-11 | Motorola, Inc. | Integral diversity antenna for a laptop computer |
JP2705392B2 (ja) * | 1991-09-04 | 1998-01-28 | 日本電気株式会社 | 携帯無線機 |
-
1993
- 1993-09-02 FR FR9310462A patent/FR2709604B1/fr not_active Expired - Lifetime
-
1994
- 1994-07-26 DE DE1994632205 patent/DE69432205T2/de not_active Expired - Lifetime
- 1994-07-26 EP EP19940401711 patent/EP0642189B1/fr not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7183983B2 (en) | 2005-04-26 | 2007-02-27 | Nokia Corporation | Dual-layer antenna and method |
Also Published As
Publication number | Publication date |
---|---|
FR2709604B1 (fr) | 1995-10-20 |
EP0642189A1 (fr) | 1995-03-08 |
DE69432205D1 (de) | 2003-04-10 |
FR2709604A1 (fr) | 1995-03-10 |
DE69432205T2 (de) | 2004-02-12 |
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