EP1145378B1 - Zweiband-übertragungsanordnung und eine antenne für diese anordnung - Google Patents

Zweiband-übertragungsanordnung und eine antenne für diese anordnung Download PDF

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Publication number
EP1145378B1
EP1145378B1 EP00942171.0A EP00942171A EP1145378B1 EP 1145378 B1 EP1145378 B1 EP 1145378B1 EP 00942171 A EP00942171 A EP 00942171A EP 1145378 B1 EP1145378 B1 EP 1145378B1
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EP
European Patent Office
Prior art keywords
antenna
tail
extending
short
patch
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
Application number
EP00942171.0A
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English (en)
French (fr)
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EP1145378A1 (de
Inventor
Pascal Herve
Charles Ngounou Kouam
Jean-Philippe Coupez
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Alcatel Lucent SAS
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Alcatel Lucent SAS
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Publication of EP1145378A1 publication Critical patent/EP1145378A1/de
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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
    • H01Q9/0407—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
    • 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
    • H01Q1/12—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
    • H01Q1/246—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for base stations
    • 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

Definitions

  • the present invention relates generally to radio transmission devices, in particular portable radiotelephones, and more particularly to antennas which are produced according to the microstrip technique to be included in such devices.
  • Such an antenna comprises a patch which is typically formed by etching a metal layer. It is called in English by specialists "microstrip patch antenna” for “microstrip pellet antenna”.
  • the microstrip technique is a planar technique that applies both to the realization of lines transmitting signals and to that of antennas coupling between such lines and radiated waves. It uses ribbons and / or conductive pads formed on the upper surface of a thin dielectric substrate. A conductive layer extends over the lower surface of this substrate and constitutes a ground of the line or antenna. Such a pellet is typically wider than such ribbon and its shapes and dimensions are important features of the antenna.
  • the shape of the substrate is typically that of a rectangular flat sheet of constant thickness and the pellet is also typically rectangular. But this is not an obligation. In particular, it is known that a variation in the thickness of the substrate may widen the bandwidth of such an antenna and that the tablet may take various forms and for example be circular.
  • the electric field lines extend between the ribbon or pellet and the ground layer as they pass through the substrate.
  • This technique is distinguished from various other techniques also using conductive elements on a thin substrate, and in particular that of the coplanar lines in which the electric field is established on the upper surface of the substrate and symmetrically between d firstly a central conductive ribbon and secondly two conductive pads located on either side of this ribbon from which they are respectively separated by two slots.
  • a patch is surrounded by a continuous conductive pad from which it is separated by a slot.
  • Antennas made according to these techniques typically, although not necessarily, resonant structures capable of being the seat of standing waves for coupling with radiated waves in space.
  • each such resonance can be described as being 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 progressive electromagnetic wave at both ends of this path.
  • the latter wave propagates in an electromagnetic line which would be constituted by the mass, the substrate and the pellet and which would define a linear path devoid of width.
  • this path can be rectilinear or curved. It will be referred to hereinafter as the "resonance path".
  • the frequency of the resonance is inversely proportional to the time taken by the traveling wave considered above to travel this path.
  • a first type of resonance can be called a "half wave".
  • the length of the resonance path is typically substantially equal to half a wavelength, that is to say half the wavelength of the progressive wave considered above.
  • the antenna is then called "half-wave".
  • This type of resonance can be defined in a general manner by the presence of an electrical current node at each of the two ends of such a path, the length of which 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 is at least one of the two ends of this path, these ends being located in the regions where the amplitude of the electric field prevailing in the substrate is maximum.
  • a second type of resonance that can be obtained in the context of this same technique can be called "quarter wave". It differs from said half-wave type on the one hand in that the resonance path typically has a length substantially equal to one quarter wave, that is to say one quarter of the wavelength defined above.
  • the resonant structure must include a short circuit at one end of this path, the word short circuit designating a connection connecting the mass and the chip. In addition this short circuit must have an impedance sufficiently small to be able to impose such a resonance.
  • This type of resonance can be defined in a general manner by the presence of an electric field node fixed by such a short circuit in the vicinity of an edge of the chip and by an electrical current node located at the other end of the resonance path. The length of the latter can also be equal to an integer number of half-wavelengths adding to said quarter wavelength.
  • the coupling with the spatially radiated waves is at an edge of the pellet in a region where the magnitude of the electric field across the substrate is sufficiently large.
  • 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 oscillating in a zone of space including the antenna and the immediate vicinity of this one. They depend in particular on the configuration of the pellets, the latter may in particular have slots, possibly radiative. They also depend on the possible presence and localization of short-circuits as well as electrical models representative of these short-circuits when they are imperfect short circuits, that is to say when they are not assimilated, even approximately, to perfect short circuits whose impedances would be zero.
  • the node appearing in the second antenna is also a node for the resonance of the first antenna.
  • a node will be hereinafter referred to as "virtual" because it is located in an area which is situated outside the pellet of this antenna and in which no electric field or magnetic capable of directly recognizing the presence of this node.
  • connection assembly comprising a connection line which is external to this antenna and which terminates with a signaling system.
  • connection assembly comprising a connection line which is external to this antenna and which terminates with a signaling system.
  • the resonances of this antenna also depend on the nature and location of this system. With reference to the case of transmitting antennas the connection assembly is often referred to as a supply line of this antenna.
  • the present invention relates to various types of devices such as mobile telephones, base stations for the latter, automobiles and airplanes or air missiles.
  • devices such as mobile telephones, base stations for the latter, automobiles and airplanes or air missiles.
  • the continuous nature of the lower ground layer of an antenna made using the microstrip technique makes it possible to easily limit the radiation power intercepted by the body of the user of the device.
  • the antenna may be shaped to this profile so as not to reveal additional aerodynamic drag annoying.
  • 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 generally rectangular shape allowing this antenna to present two half-wave resonances whose paths are established along a length and a width of this patch. Moreover, it has a U-shaped curved slot which is entirely internal to this pellet. This slot is radiative and shows an additional resonance mode established in another path. 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 circularly polarized wave through the combination of two modes with the same frequency and crossed linear polarizations.
  • the coupling device has the form of a line which is made according to the microstrip technique but which is also said to be coplanar, because the microstrip extends in the plane of the pellet and penetrates between two notches of the latter.
  • This device is provided with impedance transformation means to adapt it to the different input impedances respectively presented by the line at the different resonance frequencies used as working frequencies.
  • a second known antenna differs from the previous one by the use of a single resonance path. It is described in the patent document US-A-4,771,291 (LO et al ). Its pellet has punctual short circuits and slots extending in line segments inside the pellet. These slots and short circuits make it possible to reduce the difference between two frequencies corresponding to two resonances having said path in common but two mutually different respective modes which are designated by the digits (0,1) and (0,3). that is to say that this common path is occupied by a half wave or three half waves depending on the mode considered. The ratio between these two frequencies can thus be lowered from 3 to 1.8. Punctual short circuits consist of conductors crossing the substrate.
  • This second known antenna has the disadvantage that its manufacture is complicated by the incorporation of short circuits.
  • 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 DIGEST SYMPOSIUM, NEWPORT BEACH, JUNE 18-23, 1995, pp. 2124-2127 Boag et al "Dual Band Cavity-Backed Quarter-wave Patch Antenna
  • a first resonance frequency is defined by the dimensions and characteristics of the substrate and the pellet of this antenna.A resonance of substantially the same type is obtained at a second frequency on the same resonance path thanks to the use of an adaptation system.
  • WO-A-99/38227 discloses a dual-band antenna having a slot and a short-circuit, the origin of the slot and the short-circuit being on different sides of the patch.
  • JP-A-08250917 discloses an antenna structure similar to that of the invention, but being adapted to a single frequency band.
  • the separating slot is located, all along its length except in the vicinity of its origin, or at least a major part of its length, and on both sides, at a distance from the periphery of the upper pellet to the distance of the bottom of this slot at this periphery.
  • the origin of the separating slot is close to said short circuit so as to give the two said resonances two respective resonance paths both extending from this short circuit, one of these two paths being extending only into said body and the other extending into that body and into said tail.
  • the antenna further comprises a coupling system.
  • This system comprises on the one hand a main conductor constituted by a coupling ribbon C1 extending on the upper surface S2 of the substrate.
  • This ribbon is connected to the chip 6 at a connection point 18 which may for example be located on the leading edge 14. The distance from the rear edge 10 at this point constitutes a connection number.
  • This system also comprises a ground conductor constituted by the layer 4. It is part of a connection assembly which connects the resonant structure of the antenna to a signal processing unit T, for example to excite one or several resonances of the antenna from this body in the case where it is a transmitting antenna.
  • the connection assembly typically includes a connecting line which is external to the antenna.
  • This line may in particular be of the coaxial type, of the microstrip type or of the coplanar type.
  • On the figure 1 it has been symbolically represented in the form of two conducting wires C2 and C3 respectively connecting the mass 4 and the ribbon C1 to the two terminals of the signal processing unit T. But it must be understood that this line would in practice be made of preferably in the form of a microstrip line or a coaxial line.
  • the signal processing unit T is adapted to operate at predetermined working frequencies which are at least close to useful resonance frequencies of the antenna, that is to say which are included in passbands centered on these frequencies of frequencies. resonance. It can be composite and then include an element permanently assigned to each of these working frequencies. It can also include a tunable element on the various working frequencies. Said primary resonant frequency constitutes such a useful resonant frequency.
  • the separating slot 17 extends from the rear edge 10,11 of the pellet to a bottom 15 of this slot, at a distance from the lateral edges 14 and 16 and the front edge 12.
  • the body 31 is thus connected to the tail 33 by a tail connection passage 32.
  • This passage has a length W2 extending in the direction DT and a width L2 extending in the direction DL between the leading edge 14 and the bottom 15
  • This body has a width W1 extending along the direction DT.
  • the slot 17 separates the rear edge on the one hand a body base 10 belonging to the body 31 and provided with the short circuit S and on the other hand, a tail base 11 belonging to the tail 33, this tail base having W4 width extending in the transverse direction DT.
  • a vertex 13 of this tail is constituted by the junction zone of this tail with the passage 32.
  • a length of this tail extends along the direction DL of the base 11 at this vertex.
  • a width of this tail is defined at each point of this length and extends along the direction DT.
  • the widths of the body, the passage and the tail of the pellet are uniform and an antenna whose pellet is thus produced can meet the needs generally felt in the field of radiotelephones in that its primary and secondary frequencies can be in a report neighbor of two.
  • the width W4 of the base 11 of the tail 33 is larger than the width W2 of its vertex 13. More preferably, the width of this tail increases from its vertex to its base, passing through several intermediate values between the widths of this summit and this base. More preferably this growth of the width of the tail is a continuous growth, and this tail has for example the shape of a trapezium whose large and the small base are constituted by the base and the top of this tail.
  • the length L3 of the tail 33 is between 50% and 100% of the length L1 of the body 31, the ratio F2 / F1 of the secondary frequency F2 to the primary frequency F1 being between 1.9 and 2, 1.
  • the width W4 of the base 11 of the tail 33 is between 50% and 150% of the width W1 of the body 31.
  • this effective width W3 is preferably between 10% and 70% of the width W4 of this base.
  • the substrate 2 includes in at least a part of its two mutually distinct and superimposed layers, these two layers respectively constituting a lower dielectric layer 21 carrying the mass 4 and an upper dielectric layer 22 carrying the wafer 6.
  • This upper dielectric layer advantageously has a greater relative permittivity and possibly a smaller thickness That of this lower dielectric layer and these two layers extend over the entire area of the substrate.
  • Such a difference between the two layers has the advantage of increasing the radiation efficiency over a long distance. In addition, it facilitates an adjustment of the resonant frequencies.
  • the antenna includes a conductive insert 23 extending in a fraction of the area of the pellet 6 between the two lower dielectric layers 21 and upper 22. This fraction advantageously extends under the passage 32 and in the vicinity of the front edge 12.
  • this same advantage could be obtained using a tongue constituted by a thin copper sheet extending in continuity with the body 31 and projecting from it and the substrate from the front edge 12.
  • a tab can be bent at will on this edge to deviate from the plane of the pellet and closer to the vertical slice plane of the substrate. It is the choice of its inclination that then allows the desired frequency adjustment.
  • the length and the width of the substrate are respectively indicated according to the longitudinal directions DL and transverse DT.
  • the mass of the antenna covers the underside of the substrate.
  • the short circuit S occupies the entire width of the base of the body 31.
  • the primary radiative edge is the front edge 12, which corresponds to a quarter-wave type primary resonance having an electric field node on segment 10.
  • the observed value of the primary frequency nevertheless suggests that the path of this resonance has been somewhat lengthened by the presence of the passage 32 and the tail 33. If the length of the chip was imposed such an elongation would give the primary frequency a value more weak in the presence of the slit 17 than in his absence. In the typical case where it is the value of this primary frequency which is imposed, the presence of this slot makes it possible to reduce the length of the pellet, which is a generally sought advantage. This advantage would remain if this antenna were included in a single-band transmission device that would only use the primary resonance of that antenna.
  • the secondary radiative edge is constituted by the base 11 of the shank 33.
  • the observed value of the secondary frequency suggests that the path of the secondary resonance borrows, from the short circuit S, no only the length of the body 31, but also those of the passage 32 and the tail 33 and that this resonance is essentially a resonance of the half-wave type, the length of its path being however close to three quarters of the wavelength with two nodes of electric field one of which would be imposed by the short circuit S and the other would be close to the top 13 of the tail 33.
  • the primary radiative edge is the base 11 of the tail 33 and the value of the primary frequency indicates that the primary resonance path of the quarter-wave type borrows from short circuit S, not only the length of the body 31, but also those of the passage 32 and the tail 33.
  • the presence of the slot 17 therefore allows to reduce the length of the pellet more strongly than in the first embodiment.
  • the secondary radiative edge is constituted by the front edge 12.
  • the observed value of the secondary frequency suggests that the path of the secondary resonance extends over the length of the body 3 and that this resonance is essentially a resonance of the quarter wave type.
  • the body 31 is provided with a protrusion 34 extending in the plane of the pellet 6, projecting on the leading edge 14, in the vicinity of the front edge 12.
  • Such an outgrowth 34 is also represented at figure 5 for the fourth mode of implementation of the invention, mode in which it is formed projecting on the rear edge 10 in the vicinity of the leading edge 14
  • the short circuit has a fairly large impedance at the primary frequency so that the primary resonance is substantially different from a resonance which could be induced in the antenna in the vicinity of this frequency if this short circuit had no impedance.
  • This impedance is at the same time quite small at this frequency to fix an electric field node of this resonance in the vicinity of the base 10 of the body 31, this node being at least virtual.
  • This arrangement has the disadvantage of complicating the realization of the short circuit. But it has the sometimes major advantage that a suitable choice made according to this invention for the components of such an impedance allows that the resonances of an antenna or its physical characteristics are better adapted to the use of this antenna if the short circuit had no impedance.
  • the impedance of this short circuit has an inductive component L.
  • an inductive component makes it possible to reveal a quarter-wave type resonance having a virtual electric field node located behind the base 10 , that is to say outside the pellet 6. It thus provides an advantage which is to allow to further reduce the length of this pellet when the frequency F1 of the primary resonance is imposed.
  • the impedance of the short-circuit may also have a resistive component R, such a component providing the advantage of making it possible to increase the widths of the bandwidths of the antenna. It can also have a controlled component produced by a diode D provided with a decoupling capacitor connected in parallel and not shown. Such a component provides the advantage of controlling the frequency or bandwidth of a resonance of the antenna. Such components are easily made using at least one discrete component connected between the chip 6 and the mass 4.
  • the substrate 2 includes in at least a part of its area two mutually distinct and superposed layers, these two layers respectively constituting a lower dielectric layer 21 carrying the mass 4. and an upper dielectric layer 22 carrying the wafer 6.
  • This upper dielectric layer advantageously has a greater relative permittivity and possibly a smaller thickness than those of this lower dielectric layer and these two layers extend over the entire surface of the substrate.
  • such difference between the two layers has the advantage of increasing the efficiency of radiation at great distances.
  • it facilitates an adjustment of the resonant frequencies.
  • the antenna includes a conductive insert 23 extending in a fraction of the area of the pellet 6 between the two lower dielectric layers 21 and upper 22. This fraction advantageously extends under the passage 32 and in the vicinity of the front edge 12.
  • this same advantage could be obtained using a tongue constituted by a thin copper sheet extending in continuity with the body 31 and overflowing with the latter and the substrate from the front edge 12.
  • a tab can be bent at will on this edge to deviate from the plane of the pellet and more or less close to the vertical slice plane of the substrate. It is the choice of its inclination that then allows the desired frequency adjustment.
  • the antenna made according to the fourth embodiment of this invention differs from previous antennas in particular by the fact that the origin O of the separating slot 17 and the short circuit S are close to the point common to both rear sides 10 and tail 16, the edges of this separating slot being concave on the side of the body 31 and convex on the side of the tail 33, so as to give the two said resonances two respective resonance paths extending from this short -circuit, one of these two paths extending only in this body and the other extending in this body and in this tail.
  • the antenna coupling tape C1 and the protrusion 34 are connected to the rear edge 10. This antenna has the particular advantage of having a large bandwidth.
  • the front edge 12 and the trailing edge 16 each constitute a primary radiative edge, and the value of the primary frequency indicates that the primary resonance path of the quarter-wave type borrows from short circuit S, not only of the body 31 to the passage 32, but also a length of the tail 33.
  • the leading edge 14, the rear edge of the slot 17 and the rear edge 10 of the pellet each constitutes a secondary radiative edge and the observed value of the secondary frequency suggests that the path of the secondary resonance is contained in the body 31 and that this resonance is of a relatively complex type.
  • This invention also relates to an antenna as previously described.
  • This invention makes it possible to give each of these two frequency bands a sufficient width, not only to avoid a crosstalk between the spectral transmit and receive channels located in this band, but also to make it possible to choose between several possible positions of these channels. in this band.
  • the low frequency band corresponds to the GSM standard and the high frequency band to the DCS standard.
  • the high transmit and receive frequencies can be respectively 1750 and 1840 MHz and the frequencies Low transmit and receive can be 890 and 940 MHz, respectively.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
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Claims (24)

  1. Antenne in Micro-Strip-Technik für eine Dual-Band-Übertragungsvorrichtung, wobei diese Vorrichtung umfasst:
    - ein Signalverarbeitungsorgan (T), welches dazu ausgelegt ist, in der Frequenz in beiden Arbeitsbändern, welche sich jeweils um zwei vorbestimmte Mittenfrequenzen erstrecken, abgestimmt zu werden, um in einem jeden der zwei Bänder ein elektrisches Signal auszugeben und/oder zu empfangen,
    - eine Antennenanschlussanordnung mit elektrischen Leitern (C1, C2, C3, C4) zum Verbinden dieses Verarbeitungsorgan mit dieser Antenne, um das besagte elektrische Signal an abgestrahlte Wellen zu koppeln,
    wobei diese Antenne umfasst:
    - Eine elektrisch leitende Masse (4),
    - einen leitenden Patch (6) mit einem Umfang (10, 12, 14, 16), wobei der besagte Patch eine allgemein rechteckige Form aufweist und der besagte Umfang einen hinteren Rand umfasst;
    - einen an dem besagten hinteren Rand (10) dieses Umfangs hergestellten Kurzschluss (S), und
    - einen Trennschlitz (17), dessen Ausgangspunkt (O) von einer auf dem besagten hinteren Rand (10) dieses Umfangs eingelassenen Öffnung gebildet wird, wobei dieser Schlitz ausgehend von diesem Ausgangspunkt (O) bis in diesen Patch reicht,
    wobei der besagte Kurzschluss und dieser Trennschlitz das Herstellen von zwei Resonanzen in dieser Antenne ermöglichen, wobei eine dieser beiden Resonanzen vom Typ Viertelwelle mit einem von diesem Kurzschluss festgelegten zumindest virtuellen Knoten eines elektrischen Feldes ist, wobei diese Resonanz eine Primärresonanz ist und eine Primärfrequenz (F1) aufweist, welche im Wesentlichen gleich einer der beiden besagten Mittenfrequenzen ist, wobei eine andere der beiden Resonanzen eine Sekundärresonanz bildet und eine Sekundärfrequenz (F2) aufweist, welche im Wesentlichen gleich der anderen dieser beiden Mittenfrequenzen ist,
    wobei die besagten elektrischen Leiter der Anschlussanordnung die besagte Masse und einen Antennenkoppel-Hauptleiter (C1), welcher dem besagten Patch angehört, umfassen, um ein Ankoppeln der besagten Antenne an das besagte Signalverarbeitungsorgan (T) rund um eine jede der besagten zwei Mittenfrequenzen zu ermöglichen,
    wobei sich der besagte Trennschlitz (17) in dem besagten Patch bis zu einem Grund (15) dieses Schlitzes erstreckt, welcher sich in einem Abstand von dem besagten Umfang befindet, welcher klein genug ist, um zu gewährleisten, dass dieser Schlitz diesen Patch teilweise einerseits in Körper (31), welcher den besagten Antennenkoppel-Hauptleiter umfasst und den besagten Kurzschluss aufweist, und andererseits in einen Schwanz (33) ohne diesen Kurzschluss, welcher lediglich über diesen Körper und einen Durchlass (32), der von einem Bereich dieses Patches zwischen diesem Grund und diesem Umfang gebildet wird, elektrisch mit der besagten Anschlussanordnung verbunden ist, trennt.
  2. Antenne nach Anspruch 1, dadurch gekennzeichnet, dass sich der besagte Trennschlitz (17) auf einem wesentlichen Abschnitt seiner Länge und an seinen beiden Seiten in einem Abstand von dem besagten oberen Umfang bis zum Abstand von seinem besagten Grund (15) an diesem Umfang befindet.
  3. Antenne nach Anspruch 1, dadurch gekennzeichnet, dass sich der besagte Trennschlitz (17) über die gesamte Länge und an seinen beiden Seiten, mit Ausnahme in der Nachbarschaft seines besagten Ausgangspunkts (O), in einem Abstand von dem besagten Umfang erstreckt, welcher größer als der Abstand seines besagten Grundes (15) an diesem Umfang ist.
  4. Antenne nach Anspruch 1, dadurch gekennzeichnet, dass der besagte Ausgangspunkt (O) des Trennschlitzes (17) mit dem besagten Kurzschluss (S) benachbart ist, so dass für die beiden Resonanzen zwei entsprechende Resonanzpfade hergestellt werden, welche sich beide ausgehend von dem besagten Kurzschluss erstrecken, wobei sich der eine dieser beiden Pfade lediglich in dem besagten Körper (31) und der andere in diesem Körper und in dem besagten Schwanz (33) erstreckt.
  5. Antenne nach Anspruch 4, dadurch gekennzeichnet, dass die Ränder des besagten Trennschlitzes (17) an der Seite des besagten Körpers (31) konkav und an der Seite des besagten Schwanzes (33) konvex sind.
  6. Antenne nach Anspruch 1, umfassend:
    - Ein dielektrisches Substrat (2) mit zwei sich gegenüberliegenden Hauptflächen, welche sich gemäß den horizontalen Richtungen (DL, DT) dieser Antenne erstrecken, wobei diese beiden Flächen jeweils eine untere Fläche (S1) und eine obere Fläche (S2) bilden,
    - eine untere leitende Schicht, welche sich auf der besagten unteren Fläche erstreckt und die besagte Masse dieser Antenne bildet,
    - eine obere leitende Schicht, welche sich auf einem Bereich der besagten oberen Fläche über der besagten Masse erstreckt, um den besagten Patch (6) zu bilden,
    - den besagten Kurzschluss (S), wobei dieser Kurzschluss den besagten Patch (6) ausgehend von einem Segment des besagten Umfangs dieses Patches elektrisch mit der besagten Masse (4) verbindet.
  7. Antenne nach Anspruch 6, dadurch gekennzeichnet, dass der besagte Patch (6) allgemein eine rechteckige Form aufweist, wobei sein besagter Umfang umfasst:
    - Einen Rand mit dem besagten Kurzschluss (S), welcher einen hinteren Rand (10,11) bildet,
    - einen diesem hinteren Rand gegenüberliegenden Rand, welcher einen vorderen Rand (12) bildet, und
    - zwei seitliche Ränder, welche diesen hinteren Rand mit einem vorderen Rand verbinden und jeweils einen Kopfrand (14) und einen Schwanzrand (16) bilden, wobei sich eine Länge (L4) dieses Patches gemäß einer von einer besagten horizontalen Richtung gebildeten Längsrichtung (DL) zwischen diesem hinteren Rand und dem besagten vorderen Rand (12) erstreckt, wobei sich eine Breite dieses Patches gemäß einer besagten eine Querrichtung (DT) bildende horizontalen Richtung zwischenseinen beiden besagten seitlichen Rändern erstreckt,
  8. Antenne nach Anspruch 6, dadurch gekennzeichnet, dass der besagte Kurzschluss (R, L, D) bei der besagten Primärfrequenz eine Impedanz aufweist, welche groß genug ist, um zu gewährleisten, dass sich die besagte Primärresonanz deutlich von einer Resonanz unterscheidet, welche in der Nachbarschaft dieser Frequenz in die besagte Antenne eingerührt werden könnte, wenn dieser Kurzschluss keine Impedanz hätte, wobei diese Impedanz bei dieser Frequenz gleichzeitig klein genug ist, um einen Knoten eines elektrischen Feldes dieser Resonanz in der Nachbarschaft des Kurzschlusses festzulegen, wobei dieser Knoten zumindest virtuell ist.
  9. Antenne nach Anspruch 8, dadurch gekennzeichnet, dass die besagte Impedanz des Kurzschlusses (R, L, D) eine induktive Komponente (L) aufweist.
  10. Antenne nach Anspruch 8, dadurch gekennzeichnet, dass die besagte Impedanz des Kurzschlusses eine resistive Komponente (R) aufweist.
  11. Antenne nach Anspruch 8, dadurch gekennzeichnet, dass die besagte Impedanz des Kurzschlusses eine gesteuerte Komponente (D) aufweist.
  12. Antenne nach Anspruch 8, dadurch gekennzeichnet, dass der besagte Kurzschluss (R, L, D) mindestens eine diskrete Komponente umfasst, welche zwischen dem besagten Patch (6) und der besagten Masse (4) der Antenne angeschlossen ist.
  13. Antenne nach Anspruch 6, dadurch gekennzeichnet, dass das besagte dielektrische Substrat (2) in mindestens einem Teil seines Bereichs zwei sich voneinander unterscheidende und überlagerte Schichten einschließt, wobei diese beiden Schichten jeweils eine untere dielektrische Schicht (21), welche die besagte Masse (4) trägt, und eine obere dielektrische Schicht (22), welche den besagten Patch (6) trägt, bilden.
  14. Antenne nach Anspruch 13, dadurch gekennzeichnet, dass die besagte obere dielektrische Schicht (22) eine Permittivität aufweist, welche relativ größer als die Permittivität der besagten unteren Schicht (21) ist, wobei sich diese beiden Schichten über den gesamten Bereich des besagten Substrats (2) erstrecken.
  15. Antenne nach Anspruch 13, dadurch gekennzeichnet, dass sie einen leitenden Einsatz (23) umfasst, welche sich auf einem Teil des Bereichs des besagten Patches (6) zwischen der besagten unteren (21) und der besagten oberen (22) dielektrischen Schicht erstreckt, wobei sich dieser Teil mindestens unter dem besagten Durchlass (32) erstreckt.
  16. Antenne nach Anspruch 7, dadurch gekennzeichnet, dass der besagte Körper (31) mit einem Auswuchs (34) versehen ist, welcher sich in der Ebene des besagten Patches (6) in der Nachbarschaft des besagten Durchlasses (32) erstreckt.
  17. Antenne nach Anspruch 7, dadurch gekennzeichnet, dass sich der besagte Trennschlitz (17) ausgehend von dem besagten hinteren Rand (10,11) des besagten Patches zu dem besagten vorderen Rand (12) bis zu einem Grund (1) dieses Schlitzes in Abstand von den besagten zwei seitlichen Rändern und von diesem vorderen Rand erstreckt, wodurch der besagte Körper (31) über einen Durchlass (32) mit einer Länge und einer Breite mit dem besagten Schwanz (33) verbunden ist, wobei sich diese Länge (W2) gemäß der besagten Querrichtung (DT) erstreckt, wobei sich die besagte Breite (L2) gemäß der besagten Längsrichtung (DL) zwischen dem vorderen Rand (14) und dem besagten Grund (15) dieses Schlitzes (17) erstreckt, wobei dieser Schlitz den besagten hinteren Rand einerseits in eine Körperbasis (10), welche dem besagten Körper angehört und den besagten Kurzschluss (S) aufweist, und andererseits in eine Schwanzbasis, welche dem besagten Schwanz angehört, trennt, wobei diese Schwanzbasis eine Breite (W4) aufweist, welche sich gemäß der besagten Querrichtung (DT) erstreckt, wobei ein Gipfel (13) dieses Schwanzes aus dem Fügebereich dieses Schwanzes mit dem besagten Durchlass gebildet wird und eine Breite (W3) aufweist, welche sich gemäß dieser Querrichtung erstreckt, wobei dieser Schwanz eine Länge (L3) aufweist, welche sich gemäß der besagten Längsrichtung (DL) der besagten Schwanzbasis zu diesem Gipfel erstreckt, wobei eine Breite dieses Schwanzes an jedem Punkt dieser Länge definiert wird und sich gemäß der besagten Querrichtung (DT) erstreckt.
  18. Antenne nach Anspruch 17, dadurch gekennzeichnet, dass die besagte Breite (W4) der Basis (11) des Schwanzes (33) größer als die besagte Breite (W2) des Gipfels (13) dieses Schwanzes ist.
  19. Antenne nach Anspruch 18, dadurch gekennzeichnet, dass die besagte Breite des Schwanzes (33) von dem besagten Gipfel (13) bis zu der besagten Basis (11) dieses Schwanzes zunimmt, wobei mehrere Zwischenwerte zwischen den besagten Breiten (W3, W4) dieses Gipfels und dieser Basis durchlaufen werden.
  20. Antenne nach Anspruch 19, dadurch gekennzeichnet, dass die besagte Länge (L3) des Schwanzes (33) zwischen 50 % und 100 % der besagten Länge (L1) des Körpers (31) beträgt, wobei das Verhältnis F2/F1 der besagten Sekundärfrequenz (F2) zu der besagten Primärfrequenz (F1) zwischen 1,9 und 2,1 beträgt.
  21. Antenne nach Anspruch 19, dadurch gekennzeichnet, dass die besagte Breite (W4) der Basis(11) des Schwanzes (33) zwischen 50 % und 150 % der besagten Breite (W1) des Körpers (31) beträgt, wobei der besagte Durchlass (32) und der besagte Gipfel (13) dieses Schwanzes eine Antennenanschlussanordnung dieses Schwanzes bilden, wobei eine kleinere Breite dieser Anordnung eine effektive Schwanzanschlussbreite (W3) bildet, wobei diese effektive Breite zwischen 10 % und 70 % der besagten Breite (W4) dieser Basis beträgt.
  22. Antenne nach Anspruch 7, dadurch gekennzeichnet, dass der besagte Ausgangspunkt des besagten Trennschlitzes (17) und der besagte Kurzschluss (S) mit den beiden besagten hinteren Seiten (10) und dem Schwanz (16) gemeinsamen Punkt benachbart sind, wobei die Ränder des besagten Trennschlitzes (17) an der Seite des besagten Körpers (31) konkav und an der Seite des besagten Schwanzes (33) konvex sind, um für die besagten zwei Resonanzen zwei entsprechende Resonanzpfade zu bilden, welche sich beide ausgehend von diesem Kurzschluss erstrecken, wobei sich einer dieser beiden Pfade lediglich in dem besagten Körper (31) erstreckt und der andere sich in diesem Körper und in dem besagten Schwanz (33) erstreckt.
  23. Dual-Band-Übertragungsvorrichtung, wobei diese Vorrichtung umfasst:
    - Ein Signalverarbeitungsorgan (T), welches dazu ausgelegt ist, in der Frequenz in zwei Arbeitsbändern, welche sich jeweils um zwei vorbestimmte Mittenfrequenzen erstrecken, abgestimmt zu werden, um in einem jeden der zwei Bänder ein elektrisches Signal auszugeben und/oder zu empfangen,
    - eine Antenne (1) gemäß einem der Ansprüche 1 bis 22, und
    - eine Antennenanschlussanordnung mit elektrischen Leitern (C1, C2, C3, C4) zum Verbinden dieses Verarbeitungsorgan mit dieser Antenne, um das besagte elektrische Signal an abgestrahlte Wellen zu koppeln, wobei diese elektrischen Leiter die besagte Masse und einen Antennenkoppel-Hauptleiter (C1), welcher dem besagten Patch angehört, umfasst, um ein Ankoppeln der besagten Antenne an das besagte Signalverarbeitungsorgan (T) rund um eine jede der zwei besagten Mittenfrequenzen zu ermöglichen.
  24. Übertragungsvorrichtung nach Anspruch 23, dadurch gekennzeichnet, dass das besagte Antennenkopplungssystem (C1, 4) eine Leitung vom Typ Mikrostreifen ist, welche umfasst:
    - Einen Streifen, welcher den besagten Antennenkoppel-Hauptleiter (C1) bildet
    und
    - die besagte Masse (4).
EP00942171.0A 1999-11-08 2000-06-08 Zweiband-übertragungsanordnung und eine antenne für diese anordnung Expired - Lifetime EP1145378B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9913976 1999-11-08
FR9913976A FR2800920B1 (fr) 1999-11-08 1999-11-08 Dispositif de transmission bi-bande et antenne pour ce dispositif
PCT/FR2000/001586 WO2001035492A1 (fr) 1999-11-08 2000-06-08 Dispositif de transmission bi-bande et antenne pour ce dispositif

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EP1145378B1 true EP1145378B1 (de) 2013-09-25

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US6545640B1 (en) 2003-04-08
EP1145378A1 (de) 2001-10-17
FR2800920A1 (fr) 2001-05-11
JP4549600B2 (ja) 2010-09-22
FR2800920B1 (fr) 2006-07-21
CN1223048C (zh) 2005-10-12
WO2001035492A1 (fr) 2001-05-17
JP2003514423A (ja) 2003-04-15

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