EP1225655A1 - Antenne planaire et dispositif de transmission bi-bande incluant cette antenne - Google Patents
Antenne planaire et dispositif de transmission bi-bande incluant cette antenne Download PDFInfo
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- EP1225655A1 EP1225655A1 EP01403150A EP01403150A EP1225655A1 EP 1225655 A1 EP1225655 A1 EP 1225655A1 EP 01403150 A EP01403150 A EP 01403150A EP 01403150 A EP01403150 A EP 01403150A EP 1225655 A1 EP1225655 A1 EP 1225655A1
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- Prior art keywords
- antenna
- area
- patch
- slot
- periphery
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Classifications
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- 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
- H01Q9/0407—Substantially flat resonant element parallel to ground plane, e.g. patch antenna
- H01Q9/0421—Substantially flat resonant element parallel to ground plane, e.g. patch antenna with a shorting wall or a shorting pin at one end of the element
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- 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
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- 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
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- 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
- H01Q5/314—Individual or coupled radiating elements, each element being fed in an unspecified way using frequency dependent circuits or components, e.g. trap circuits or capacitors
- H01Q5/321—Individual or coupled radiating elements, each element being fed in an unspecified way using frequency dependent circuits or components, e.g. trap circuits or capacitors within a radiating element or between connected radiating elements
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- 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
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- 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
- H01Q9/0407—Substantially flat resonant element parallel to ground plane, e.g. patch antenna
- H01Q9/0442—Substantially flat resonant element parallel to ground plane, e.g. patch antenna with particular tuning means
Definitions
- the present invention relates generally to radio devices transmission, in particular portable radiotelephones, and it concerns more particularly the antennas which are produced according to the technique of microstrips to be included in such devices.
- Such an antenna includes a patch which is typically constituted by etching of a metallic layer. It is called in English by "microstrip patch antenna” specialists for “pellet type antenna microstrip ".
- the microstrip technique is a planar technique that applies to the both for the realization of lines transmitting signals and that of antennas realizing a coupling between such lines and radiated waves.
- She uses conductive tapes and / or pads formed on the upper surface of a thin dielectric substrate.
- a conductive layer extends over the surface bottom of this substrate and constitutes a mass of the line or the antenna.
- Such a patch is typically wider than such a ribbon and its shapes and dimensions are important features of the antenna.
- the form of the substrate is typically that of a flat rectangular sheet of thickness constant and the patch is also typically rectangular. But one varying the thickness of the substrate can widen the bandwidth of such antenna and its patch can take various forms and for example be circular.
- the electric field lines extend between the ribbon or the pellet and the mass layer crossing the substrate.
- the antennas produced according to these techniques typically constitute, although not necessarily, resonant structures capable of being the seat standing waves allowing coupling with radiated waves in space.
- each such resonance can be described as a standing wave formed by the superposition of two progressive waves propagating in two opposite directions on the same path, these two waves resulting from the alternative reflection of the same wave progressive electromagnetic at both ends of this path.
- this last wave propagates in an electromagnetic line which would be constituted by the mass, the substrate and the patch and which would define a linear path devoid of width.
- a such wave has wave surfaces which extend transversely across the entire section offered to them by the antenna so this description simplifies the reality in a sometimes excessive way.
- this path can be straight or curved. He will be hereinafter referred to as the "resonance path”.
- the frequency of resonance is inversely proportional to the time taken by the traveling wave considered above to travel this route.
- a first type of resonance can be called “half wave”.
- the length of the resonance path is typically substantially equal to one half wavelength i.e. half the wavelength of the wave progressive considered above.
- the antenna is then called “half-wave”.
- This guy of resonance can be defined generally by the presence of a electric current node at each of the two ends of such a path including the length can therefore also be equal to said half-wavelength multiplied by an integer other than one. This number is typically odd.
- the coupling with the radiated waves takes place at at least one of the two ends of this path, these ends being located in regions where the amplitude of the electric field prevailing in the substrate is maximum.
- a second type of resonance which can be obtained within the framework of this same technique can be called "quarter wave". It differs from said half-wave type on the one hand by the fact that the resonance path typically has a length substantially equal to a quarter wave, i.e. a quarter of the wavelength defined above.
- the resonant structure must have a short circuit at one end of this path, the word short circuit designating a connection connecting the ground and the patch.
- this short circuit must have an impedance small enough to be able to impose such resonance.
- This type of resonance can be generally defined by the presence of an electric field node fixed by such a short circuit to the near an edge of the patch and by an electric current node located the other end of the resonance path.
- the length of the latter can therefore also be equal to a whole number of half-wavelengths added to said quarter wavelength.
- the coupling with the radiated waves in the space is made on an edge of the patch in a region where the amplitude of the electric field through the substrate is large enough.
- Resonances of other more or less complex types can be established in antennas of this kind, each resonance being characterized by a distribution of electric and magnetic fields which oscillate in an area of space including the antenna and its immediate vicinity. They depend in particular on the configuration of the pellets, the latter possibly in particular present slots, possibly radiative. They depend also of the possible presence and location of short circuits as well as electrical models representative of these short circuits when these are imperfect short circuits, i.e. when they are not similar, even approximately, to perfect short-circuits whose impedances would be zero.
- the present invention finds application in various types of devices such as portable radios, base stations for mobile phones, automobiles and airplanes or air missiles.
- portable radiotelephone the continuous nature of the lower mass layer of an antenna produced using the microstrip technique limits the power of radiation which is intercepted by the body of the user of the device when the latter is operating in transmission.
- the antenna can be conformed to this profile so as not to bring up annoying additional aerodynamic drag.
- a first such known antenna is described in the patent document US-A 4,766,440 (Gegan).
- the patch 10 of this antenna has a shape general rectangular allowing this antenna to present two half wave resonances whose paths are established along a length and a width of this patch. Furthermore it has a curved slit in the shape of U which is entirely internal to this patch. This slit is radiative and brings up an additional mode of resonance established according to a other route. It also allows, by a suitable choice of its shape and its dimensions, to bring the frequencies of the resonance modes to desired values which gives the possibility of emitting a polarized wave circular thanks to the association of two modes having the same frequency and linear polarizations crossed and phase shifted by 90 °.
- the device coupling has the form of a line which is produced according to the technique of microstrips but which is also said to be coplanar, this because the microstrip extends in the plane of the patch and enters between two notches of the latter.
- This device is provided with transformation means impedance to adapt it to the different input impedances respectively presented by the line at the different resonance frequencies used as working frequencies.
- the tablet of this antenna has the shape of a circular disc 10 allowing this antenna to present two half wave resonances.
- the coupling system presents the form of a line 16 constituting a quarter wave transformer and is connecting at an interior point to the area of the patch so as to give the real part of the antenna input impedance values substantially equal for these two resonances.
- Line 16 is made using the technique microstrips.
- Two slits are formed in the conductive layer of this pastille and enter the area thereof from its periphery to delimit between them the ribbon of a terminal segment of this line.
- One of these two slits is continued by an extension which constitutes a slit impedance matching 28.
- a third known dual-frequency antenna differs from the previous ones by the use of a quarter wave resonance. It is described in an article: IEEE ANTENNAS AND PROPAGATION SOCIETY INTERNATIONAL SYMPOSIUM DIGEST, NEWPORT BEACH, JUNE 18-23, 1995, pages 2124-2127 Boag et al "Dual Band Cavity-Backed Quarter-wave Patch Antenna".
- a first resonant frequency is defined by the dimensions and characteristics of the substrate and the patch of this antenna.
- a resonance substantially the same type is obtained at a second frequency on the same resonance path thanks to the use of an adaptation system.
- a flat reactive element may, however, have another shape for perform a coupling according to this invention. It can for example be constituted by an interdigitated capacity integrated in the layout of the separating slot thanks to an adequate cutting of the edges opposite the two areas of the pellet.
- this antenna also includes a short circuit connecting electrically the first conductive ground to earth in the vicinity of the origin of the separating slit.
- the area of the capacitor is between 1% and 25% of that of the pastille.
- the origin of the separating slit is close to the short circuit so as to give the two resonances two resonance paths respective both extending from this short circuit, one of these two paths extending only in the first range and the other extending in this first range and in the second range.
- FIG. 1 represents a perspective view of a device for transmission made according to this invention.
- FIG. 2 represents a top view of an antenna produced according to this invention and analogous to that of the device of FIG. 1.
- FIG. 3 represents a partial view in vertical section of the antenna of Figure 2.
- Figure 4 reproduces the view of Figure 2 to designate different dimensions of the same antenna.
- the antenna further includes a coupling system.
- This system has the form of a microstrip line.
- This line includes on the one hand a main conductor consisting of a C1 coupling strip extending over the upper surface of the substrate.
- This ribbon is connected to the patch 6 at a point connection 18 which can for example be located on the first lateral edge 14. The distance from the rear edge 10 to this point constitutes a dimension of connection L4.
- This line also has a ground conductor constituted by layer 4. In FIG. 1, it is only to simplify the drawing that the substrate 2 is not represented under the ribbon C1 and that this line is shown with a very small length.
- connection set typically comprises a connection line which is external to the antenna.
- This line can in particular be of the coaxial type, of the microstrip type or of the coplanar type.
- Figure 1 it has been symbolically represented under the form of two conductive wires C2 and C3 respectively connecting the ground 4 and the ribbon C1 at the two terminals of the signal processing member T. But it must be understood that this line would in practice be preferably carried out under the shape of a microstrip line or a coaxial line.
- the signal processor T is adapted to operate at predetermined working frequencies which are at least close to frequencies useful of the antenna, i.e. which are included in bandwidths centered on such useful frequencies, these frequencies being those of certain at least antenna resonance modes. It can be composite and then have an element permanently tuned to each of these working frequencies. It can also include a tunable element on the various working frequencies.
- a separating slit 17 enters the area of the patch 6 from a origin 40 separating two segments 10 and 11 from the rear edge thereof. extends to a bottom 15 located at a distance from the lateral edges 14 and 16 and from the front edge 12. It partially separates from each other a first and a second ranges 31 and 33 which are connected beyond this bottom by a passage 32. It comprises for example three straight segments of length neighbors, a first segment extending from the origin 40 towards the edge front 12 approaching the second lateral edge 16, a second segment extending parallel to this front edge towards this lateral edge, and a third segment extending parallel to this first segment up to background 15. The distances from this background to these two edges are respectively less than half the length and width of the patch. A width of this slit is defined at each point of its length. She is by example, although not necessarily, uniform.
- This slot reveals two modes of resonance constituting respectively a primary resonance having a frequency of primary resonance and a secondary resonance having a frequency of secondary resonance.
- the primary resonance extends over the entire patch 6. It is approximately of the quarter wave type, its path of resonance extending from short circuit S to segment 11 of the rear edge. His coupling with radiated waves is mainly done from this segment and the adjacent part of the second lateral edge 16.
- the resonance secondary extends only on the range 31. It is also approximately quarter-wave type, its resonance path extending from short circuit S to front edge 12. Its coupling with radiated waves is mainly done from this edge and from the adjacent part of the first lateral edge 14.
- the first area 31 can have a protrusion 34 extending in the plane of the patch 6, projection on the first lateral edge 14, in the vicinity of the front edge 12. It has Indeed, it was found that such a projection could facilitate the adjustment of the resonant frequencies of the antenna.
- the area of this capacitor is for example rectangular and close to 5% of that of this pastille. It preferably extends to contact or immediate vicinity of the periphery of this patch.
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- Computer Networks & Wireless Communication (AREA)
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- Variable-Direction Aerials And Aerial Arrays (AREA)
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Abstract
Description
- elle doit être bi-fréquence c'est à dire qu'elle doit pouvoir émettre et/ou recevoir efficacement des ondes rayonnées sur deux fréquences séparées par un écart spectral important,
- elle doit pouvoir être raccordée à un organe de traitement de signal à l'aide d'une seule ligne de raccordement pour l'ensemble des fréquences de travail d'un dispositif de transmission sans donner naissance dans cette ligne à un taux d'ondes stationnaires parasites gênant,
- et il ne doit pas être nécessaire pour cela d'utiliser un multiplexeur ou démultiplexeur en fréquence.
- La nécessité de prévoir des moyens de transformation d'impédance complique la réalisation.
- L'ajustement précis des fréquences de résonance à des valeurs souhaitées est difficile à réaliser.
- La réalisation des moyens de transformation d'impédance est délicate.
- L'ajustement précis des fréquences de résonance à des valeurs souhaitées est difficile à réaliser.
- L'écart entre les deux fréquences de résonance est trop petit dans certains cas d'application.
- La nécessité d'utiliser un système d'adaptation complique la réalisation de l'antenne.
- Il peut en être de même de la réalisation du dispositif de couplage de l'antenne sous la forme d'une ligne coaxiale.
- permettre de réaliser simplement une antenne bi-fréquence,
- permettre de choisir plus librement que précédemment le rapport des fréquences centrales de deux bandes de travail d'un dispositif de transmission, et plus particulièrement de réaliser pour ce dispositif une antenne telle que le rapport de deux fréquences de résonance utiles de cette antenne soit compris entre 1,25 et 5 environ et notamment voisin de 2,
- donner à cette antenne une bande passante suffisamment large autour de chacune de ces deux fréquences de résonance pour permettre de situer dans chacune de ces deux bandes une fréquence d'émission et une fréquence de réception de ce dispositif,
- permettre un ajustement facile et précis de ces deux fréquences de résonance,
- permettre d'utiliser un dispositif de couplage unique et facilement adaptable en impédance pour chacune de ces deux fréquences de résonance, et
- limiter les dimensions de cette antenne.
- une masse conductrice
- un substrat diélectrique formé sur cette masse, et
- une pastille formée sur ce substrat. Cette pastille a une aire et une périphérie. Elle présente une fente séparatrice ayant de préférence une origine située sur cette périphérie et un fond situé dans cette aire, ce fond laissant un passage entre lui et cette périphérie. Cette fente pénètre dans cette aire à partir de cette origine et coopère avec cette périphérie pour délimiter dans cette aire une première plage et une deuxième plage, ces deux plages étant conductrices et étant électriquement mutuellement séparées par cette fente et raccordées par ce passage.
- une couche diélectrique formée sur cette pastille, et
- une armature conductrice formée sur cette couche diélectrique.
- Un substrat diélectrique 2 présentant deux surfaces principales mutuellement opposées s'étendant selon des directions horizontales constituant une direction longitudinale DL et une direction transversale DT. Ce substrat peut présenter des formes diverses comme précédemment exposé. Ses deux surfaces principales constituent respectivement une surface inférieure et une surface supérieure.
- Une couche conductrice inférieure s'étendant par exemple sur la totalité de cette surface inférieure et constituant une masse 4 de cette antenne.
- Une couche conductrice supérieure s'étendant sur une aire de cette surface supérieure au-dessus de la masse 4 de manière à constituer une pastille 6. De manière générale cette pastille a une longueur et une largeur s'étendant respectivement selon les directions DL et DT, et sa périphérie peut être considérée comme constituée par quatre bords. L'un de ces bords s'étend de manière générale selon la direction DT et constitue un bord arrière incluant deux segments 10 et 11. Un bord avant 12 est opposé à ce bord arrière. Un premier et un deuxième bords latéraux 14 et 16 s'étendent de manière générale selon la direction DL et joignent ce bord arrière à ce bord avant.
- Enfin un court-circuit raccordant électriquement la pastille 6 à la masse 4 à partir du segment 10 du bord arrière de cette pastille. Dans le mode représenté de mise en oeuvre de cette invention, ce court-circuit est formé par une couche conductrice S s'étendant sur une surface de tranche du substrat 2, surface qui est typiquement plane et constitue alors un plan de court-circuit. Il impose à au moins une résonance de l'antenne de présenter au moins approximativement un noeud de champ électrique au voisinage du segment 10 de manière à être sensiblement du type quart d'onde. Les bords arrière, avant et latéraux et les directions longitudinale et transversale sont définis par la position d'un tel court-circuit dans la mesure où ce court-circuit est suffisamment important, c'est à dire notamment où son impédance est suffisamment basse pour imposer à l'antenne l'existence d'une résonance présentant un tel noeud de champ électrique.
- une couche diélectrique CD formée sur cette pastille, et
- une armature conductrice CA formée sur cette couche diélectrique.
- Lors de la réalisation de l'antenne, il est facile d'ajuster la longueur et la largeur du condensateur, ce qui permet d'ajuster ce couplage et d'agir ainsi sur les paramètres électriques de l'antenne.
- La présence de ce condensateur allonge les longueurs électriques de l'antenne. C'est à dire qu'elle permet de diminuer l'encombrement de l'antenne tout en conservant des valeurs souhaitées pour les fréquences de résonance.
- Elle élargit les bandes passantes des deux résonances sans augmenter sensiblement les taux d'ondes stationnaires.
- La masse de l'antenne recouvre la face inférieure du substrat.
- Le court-circuit S occupe toute la largeur du segment 10 qui constitue un bord arrière de la première plage 31.
- Composition du substrat 2: mousse ayant une permittivité relative de 1,07 et un facteur de dissipation de 0,0002,
- Epaisseur de ce substrat : H1 = 7 mm,
- Composition des couches conductrices : cuivre,
- Epaisseur de ces couches : 17 microns,
- Largeur du conducteur C1 : 5 mm,
- Cote de raccordement : L4 = 10 mm,
- Longueur de la pastille : L1 = 35 mm,
- Largeur de la pastille : W1 = 24 mm,
- Largeur du segment 11: W5 = 16 mm,
- Largeur de la fente 17: 0,75 mm,
- Tracé de cette fente : L5 = 13.mm, W2 = 9 mm, W3 = 8 mm, L2 = 6.mm, W4 = 3 mm,
- Permittivité relative de la couche CD du condensateur CR égale à 2,2,
- Epaisseur de cette couche: H2 = 0,1 mm,
- Longueur de ce condensateur: L3 = 6 mm,
- Largeur de ce condensateur: W6 = 7 mm,
- Impédance d'entrée : 50 ohms,
- Fréquence de résonance primaire : F1 = 965 MHz,
- Fréquence de résonance secondaire : F2 = 1860 MHz,
- Largeurs des bandes passantes autour des fréquences primaire et secondaire : 9,1% et 19% de ces fréquences, respectivement, ces largeurs étant mesurées à - 6 dB.
Claims (9)
- Antenne planaire, cette antenne incluant des couches mutuellement superposées constituant respectivement :une masse conductrice (4),un substrat diélectrique (2) formé sur cette masse, etune pastille (6) formée sur ce substrat, cette pastille ayant une aire et une périphérie (10,12,14,16), cette pastille présentant une fente séparatrice (17) ayant une origine (40) située sur cette périphérie et un fond (15) situé dans cette aire, ce fond laissant un passage (32) entre lui et cette périphérie, cette fente pénétrant dans cette aire à partir de cette origine et coopérant avec cette périphérie pour délimiter dans cette aire une première plage (31) et une deuxième plage (33), ces deux plages étant conductrices et étant électriquement mutuellement séparées par cette fente et raccordées par ce passage, ces plages ayant des aires respectives,
- Antenne selon la revendication 1, cette antenne étant caractérisée par le fait que ledit élément réactif plat est un condensateur (CR) ayant une aire inférieure à chacune des dites aires de la première et de la deuxième plages, cette aire étant intérieure à ladite aire de la pastille (6) et s'étendant de manière continue sur ladite première plage (31), sur ladite fente séparatrice (17) à distance dudit fond (15) et sur ladite deuxième plage (33), ce condensateur étant formé par des dites couches mutuellement superposées coopérant avec ladite pastille (6) et constituant respectivement :une couche diélectrique (CD) formée sur cette pastille, etune armature conductrice (CA) formée sur cette couche diélectrique.
- Antenne selon la revendication 2, cette antenne étant caractérisée par le fait que ladite aire du condensateur (CR) est comprise entre 1% et 25% de ladite aire de la pastille (6).
- Antenne selon la revendication 1, cette antenne étant caractérisée par le fait que ledit élément réactif plat (CR) est situé au voisinage de la dite origine (40) de la fente séparatrice (17).
- Antenne selon la revendication 4, cette antenne étant caractérisée par le fait qu'elle inclut en outre un court circuit (S) raccordant électriquement ladite première plage conductrice (31) à la dite masse (4) au voisinage de la dite origine (40) de la fente séparatrice (17).
- Dispositif de transmission bi-bande, ce dispositif comportant :un organe de traitement de signal (T) adapté à être accordé en fréquence dans deux bandes de travail s'étendant respectivement autour de deux fréquences centrales prédéterminées pour émettre et/ou recevoir un signal électrique dans chacune de ces deux bandes,une antenne (1) incluant une pastille (6) et une masse (4) selon la technique des microrubans, etun ensemble de raccordement d'antenne incluant des conducteurs électriques (C1, 4, C2, C3) raccordant cet organe de traitement à cette antenne pour coupler ledit signal électrique à des ondes rayonnées autour de chacune des deux dites fréquences centrales, certains de ces conducteurs (C1,4) étant raccordés directement à cette antenne,
ce dispositif de transmission étant caractérisé par le fait qu'il inclut en outre un élément réactif (CR) extérieur au dit ensemble de raccordement d'antenne et couplant mutuellement les deux dites plages conductrices (31, 33) de l'antenne. - Dispositif de transmission selon la revendication 6, ladite antenne incluant des couches mutuellement superposées constituant respectivement :ladite masse (4),un substrat diélectrique (2) formé sur cette masse, etladite pastille (6) formée sur ce substrat, cette pastille ayant une aire et une périphérie (10,12,14,16), cette pastille présentant ladite fente séparatrice (17), cette fente ayant une origine (40) située sur cette périphérie et un fond (15) situé dans cette aire, ce fond laissant un passage (32) entre lui et cette périphérie, cette fente pénétrant dans cette aire à partir de cette origine et coopérant avec cette périphérie pour délimiter dans cette aire une première dite plage (31) et une deuxième dite plage (33), ces deux plages étant conductrices et étant électriquement mutuellement séparées par cette fente et raccordées par ce passage, ces plages ayant des aires respectives,
ledit dispositif de transmission étant caractérisé par le fait que ledit élément réactif (CR) est un élément plat s'étendant sensiblement dans le plan de ladite pastille (6). - Dispositif de transmission selon la revendication 7, ce dispositif étant caractérisé par le fait que ledit élément réactif plat est un condensateur (CR), ce condensateur ayant une aire inférieure à chacune des dites aires de la première et de la deuxième plages, cette aire étant intérieure à ladite aire de la pastille (6).et s'étendant de manière continue sur ladite première plage (31), sur ladite fente séparatrice (17) à distance dudit fond (15) et sur ladite deuxième plage (33), ce condensateur étant formé par des dites couches mutuellement superposées coopérant avec ladite pastille (6) et constituant respectivement :une couche diélectrique (CD) formée sur cette pastille, etune armature conductrice (CA) formée sur cette couche diélectrique.
- Dispositif de transmission selon la revendication 7, les dits conducteurs (C1,4) inclus dans l'ensemble de raccordement d'antenne et raccordés directement à l'antenne étant seulement :un ruban (C1) formé dans une même couche conductrice que ladite pastille (6), etune masse formée dans une même couche conductrice (4) que ladite masse de l'antenne de manière à constituer avec ce ruban une ligne du type microruban.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0100139A FR2819346B1 (fr) | 2001-01-05 | 2001-01-05 | Antenne planaire et dispositif de transmission bi-bande incluant cette antenne |
FR0100139 | 2001-01-05 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1225655A1 true EP1225655A1 (fr) | 2002-07-24 |
EP1225655B1 EP1225655B1 (fr) | 2016-03-30 |
Family
ID=8858556
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP01403150.4A Expired - Lifetime EP1225655B1 (fr) | 2001-01-05 | 2001-12-06 | Antenne planaire et dispositif de transmission bi-bande incluant cette antenne |
Country Status (5)
Country | Link |
---|---|
US (1) | US6606062B2 (fr) |
EP (1) | EP1225655B1 (fr) |
JP (1) | JP4249411B2 (fr) |
CN (1) | CN100433451C (fr) |
FR (1) | FR2819346B1 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6621455B2 (en) | 2001-12-18 | 2003-09-16 | Nokia Corp. | Multiband antenna |
Families Citing this family (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2003034544A1 (fr) * | 2001-10-16 | 2003-04-24 | Fractus, S.A. | Antenne multibande |
TW512558B (en) * | 2002-01-16 | 2002-12-01 | Accton Technology Corp | Surface-mountable dual-band monopole antenna for WLAN application |
EP1516388A1 (fr) * | 2002-06-25 | 2005-03-23 | Fractus, S.A. | Antenne multibande pour terminal portable |
TW572384U (en) * | 2002-07-03 | 2004-01-11 | Tatung Co | Printed circuit board antenna capable of receiving signals of different polarized directions |
US7012570B2 (en) * | 2003-05-15 | 2006-03-14 | Mediatek Incorporation | Antenna with printed compensating capacitor |
US7289073B2 (en) * | 2005-08-19 | 2007-10-30 | Gm Global Technology Operations, Inc. | Method for improving the efficiency of transparent thin film antennas and antennas made by such method |
US7233296B2 (en) * | 2005-08-19 | 2007-06-19 | Gm Global Technology Operations, Inc. | Transparent thin film antenna |
CN101005291B (zh) * | 2007-01-19 | 2010-05-19 | 清华大学 | 移动终端双频平面两天线*** |
WO2009124313A1 (fr) * | 2008-04-05 | 2009-10-08 | Sheng Peng | Antenne de radiateur à entaille diélectrique à gain élevé à large bande |
FI20096320A0 (fi) * | 2009-12-14 | 2009-12-14 | Pulse Finland Oy | Monikaistainen antennirakenne |
KR20120099861A (ko) * | 2011-03-02 | 2012-09-12 | 한국전자통신연구원 | 평면형 메타물질을 포함한 마이크로스트립 패치 안테나 및 그 동작 방법 |
CN103474778B (zh) * | 2013-09-13 | 2015-09-09 | 电子科技大学 | 一种双频率接收天线及双频率整流天线 |
EP3291373B1 (fr) | 2015-05-28 | 2019-12-11 | Huawei Technologies Co., Ltd. | Antenne à fente et dispositif électronique |
JP6668197B2 (ja) * | 2016-08-18 | 2020-03-18 | 株式会社東芝 | 無線装置 |
US10193597B1 (en) * | 2018-02-20 | 2019-01-29 | Apple Inc. | Electronic device having slots for handling near-field communications and non-near-field communications |
CN112909522B (zh) * | 2021-01-15 | 2022-06-21 | 西安电子科技大学 | 一种奇偶模融合的小型化宽带窄缝天线 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4972196A (en) * | 1987-09-15 | 1990-11-20 | Board Of Trustees Of The Univ. Of Illinois | Broadband, unidirectional patch antenna |
WO1997002623A1 (fr) * | 1995-07-05 | 1997-01-23 | California Institute Of Technology | Antenne redresseuse a dispersion thermique et double polarisation |
EP0961344A1 (fr) * | 1998-05-28 | 1999-12-01 | Alcatel | Dispositif de radiocommunication et antenne à fente en boucle |
US6002367A (en) * | 1996-05-17 | 1999-12-14 | Allgon Ab | Planar antenna device |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4684952A (en) * | 1982-09-24 | 1987-08-04 | Ball Corporation | Microstrip reflectarray for satellite communication and radar cross-section enhancement or reduction |
US5617103A (en) * | 1995-07-19 | 1997-04-01 | The United States Of America As Represented By The Secretary Of The Army | Ferroelectric phase shifting antenna array |
US5926139A (en) * | 1997-07-02 | 1999-07-20 | Lucent Technologies Inc. | Planar dual frequency band antenna |
US6097345A (en) * | 1998-11-03 | 2000-08-01 | The Ohio State University | Dual band antenna for vehicles |
US6466170B2 (en) * | 2001-03-28 | 2002-10-15 | Motorola, Inc. | Internal multi-band antennas for mobile communications |
US6421018B1 (en) * | 2001-05-31 | 2002-07-16 | Andrew Corporation | Bowtie inductive coupler |
-
2001
- 2001-01-05 FR FR0100139A patent/FR2819346B1/fr not_active Expired - Fee Related
- 2001-12-06 EP EP01403150.4A patent/EP1225655B1/fr not_active Expired - Lifetime
- 2001-12-26 JP JP2001393380A patent/JP4249411B2/ja not_active Expired - Fee Related
-
2002
- 2002-01-04 CN CNB02100921XA patent/CN100433451C/zh not_active Expired - Fee Related
- 2002-01-04 US US10/035,114 patent/US6606062B2/en not_active Expired - Lifetime
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4972196A (en) * | 1987-09-15 | 1990-11-20 | Board Of Trustees Of The Univ. Of Illinois | Broadband, unidirectional patch antenna |
WO1997002623A1 (fr) * | 1995-07-05 | 1997-01-23 | California Institute Of Technology | Antenne redresseuse a dispersion thermique et double polarisation |
US6002367A (en) * | 1996-05-17 | 1999-12-14 | Allgon Ab | Planar antenna device |
EP0961344A1 (fr) * | 1998-05-28 | 1999-12-01 | Alcatel | Dispositif de radiocommunication et antenne à fente en boucle |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6621455B2 (en) | 2001-12-18 | 2003-09-16 | Nokia Corp. | Multiband antenna |
Also Published As
Publication number | Publication date |
---|---|
JP2002271132A (ja) | 2002-09-20 |
CN1363968A (zh) | 2002-08-14 |
JP4249411B2 (ja) | 2009-04-02 |
US20020196191A1 (en) | 2002-12-26 |
CN100433451C (zh) | 2008-11-12 |
FR2819346B1 (fr) | 2004-06-18 |
US6606062B2 (en) | 2003-08-12 |
FR2819346A1 (fr) | 2002-07-12 |
EP1225655B1 (fr) | 2016-03-30 |
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