EP1956682B1 - Umschaltbare Monopolantenne - Google Patents

Umschaltbare Monopolantenne Download PDF

Info

Publication number
EP1956682B1
EP1956682B1 EP20080002226 EP08002226A EP1956682B1 EP 1956682 B1 EP1956682 B1 EP 1956682B1 EP 20080002226 EP20080002226 EP 20080002226 EP 08002226 A EP08002226 A EP 08002226A EP 1956682 B1 EP1956682 B1 EP 1956682B1
Authority
EP
European Patent Office
Prior art keywords
antenna
frequency band
strands
frequency
electric switch
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.)
Active
Application number
EP20080002226
Other languages
English (en)
French (fr)
Other versions
EP1956682A1 (de
Inventor
José De Oliveira
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Apple Inc
Original Assignee
Apple Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Apple Inc filed Critical Apple Inc
Publication of EP1956682A1 publication Critical patent/EP1956682A1/de
Application granted granted Critical
Publication of EP1956682B1 publication Critical patent/EP1956682B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • 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
    • 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
    • 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
    • H01Q9/06—Details
    • H01Q9/14—Length of element or elements adjustable
    • H01Q9/145—Length of element or elements adjustable by varying the electrical length
    • 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

  • the present invention relates to a switching monopole antenna for use in a mobile telephone apparatus.
  • broadband applications of the type such as DVB-H (Digital Video Brodcast for Handheld) to be used for a broadband antenna to be used in such a way that the radio frequency signals for this type of application can be issued and received by a mobile phone device.
  • DVB-H Digital Video Brodcast for Handheld
  • the frequency ranges used to broadcast this type of application are most often extended frequency ranges which are in low values compared to the frequency ranges used by the mobile telephony devices.
  • the normalized frequency range is between 470 and 860 MHz.
  • These so-called low frequency ranges require the use of antennas of large dimensions (these dimensions are substantially inversely proportional to the resonant wavelength of these antennas) and, consequently, that the mobile telephony devices are relatively large size, which is not desired by users.
  • switching monopoles In order to reduce the size of antennas and therefore mobile telephony devices, it is known to use so-called switching monopoles.
  • the Fig. 1a represents a block diagram of an exemplary embodiment of a switching monopole antenna of the prior art, for example, of the document US Patent 6456249 .
  • a monopole is a set of strands that each correspond to either a radiating element of the antenna, or to a part of a radiating element of the antenna.
  • the antenna ANT1 consists of four radiating elements E1 to E4 which each correspond to a strand.
  • the radiating elements of the antenna ANT1 are arranged end to end so as to form a monopole MO whose total length is determined so that the antenna ANT1 resonates at the lowest frequency F1 of the antenna, frequency belonging to a wide frequency band BAF, when the monopole MO is excited by a radiofrequency signal at the excitation point E located at one of the free ends of the monopole.
  • the radiating elements E1 to E4 are arranged relative to each other so that the physical dimensions of the monopole are reduced.
  • This antenna ANT1 is said to be switched because it comprises N (in this case, N being equal to the number of radiating elements minus one is here three) electrical switches C1 to CN respectively electrically connected in series between two successive radiating elements of the monopole MO.
  • the electrical switches in question are PIN diodes whose polarization is provided by a control signal (also called polarization) delivered by a voltage source.
  • a control signal also called polarization
  • an inductive element is provided in series with the voltage source.
  • the electrical switches C1, C2 and C3 are diodes respectively biased by the voltage sources G1, G2 and G3 via the respective inductive elements L1, L2 and L3.
  • a resistive element Rr ensures the return of the circuit formed by the voltage source and the associated diode and thus determines the polarization current of the latter.
  • An inductive element Lr prevents the antenna ANT1 from being short-circuited from a radiofrequency point of view to ground.
  • a capacitive element C is connected between each electrical switch and the next radiating element of the monopole so that the polarization signal of this electrical switch does not also polarize the next electrical switch and thus disturb the latter.
  • FIG. Fig. 1b A view of the equivalent diagram of the antenna according to this mode of operation is shown in FIG. Fig. 1b . It will be understood that the antenna ANT1 then resonates at the frequency F1.
  • the effective length of the monopole MO is shortened, compared to the operating mode of the Fig. 1b .
  • the element E1 which contributes to the resonance of the antenna due to the high impedance of the electrical switch C1.
  • the antenna ANT1 then resonates at a frequency F2 greater than the frequency F1 because the length of the radiating element E1 is less than the total length of the monopole MO.
  • the antenna ANT1 By controlling the electrical switches C1,..., CN in a coordinated manner (separately or otherwise), it is then possible for the antenna ANT1 to resonate according to several frequencies each included in different parts of the frequency band BAF.
  • the inventor further observed that for each geographical area on which a broadband application is deployed, only a portion of the entire BAF frequency band is reserved for the deployment of this broadband application. Moreover, this part of the BAF frequency band, hereinafter referred to as the BFR reserved frequency band, is never used simultaneously in its entirety by a mobile telephone device that ultimately uses only one transmission channel at a time, to either transmit or receive a radiofrequency signal. This transmission channel is defined on a part of the frequency band reserved BFR.
  • the BFR reserved frequency band may have a width of 20 MHz and each transmission channel may use only one band of frequencies of 8 MHz width.
  • One of the aims of the present invention is to determine a switching monopole antenna which makes it possible to obtain a good quality of the antenna in terms of the precision of the definition of the part of the frequency band in which a frequency is located. desired resonance.
  • the present invention relates to an antenna intended to be used by a mobile telephone apparatus and comprising a set of strands excited by a radiofrequency signal whose geometry is determined so that the antenna resonates at a first resonance frequency since said set of strands is traversed by currents from its excitation point at one of its free ends, two strands of said set of strands being arranged in such a way that they are then traversed by said currents in the same direction and that they are sufficiently close to one another so that they can be electromagnetically coupled and electrically connected to each other by at least one other strand.
  • Said antenna is characterized in that it is provided to be able to resonate according to a second resonance frequency determined by a slot which separates said two strands then electromagnetically coupled by circulation of currents in opposite directions on said two strands.
  • the frequency with which the antenna resonates is determined by the polarization of at least one electrical switch.
  • said or each electrical switch is a diode biased by a voltage source, the anode of said diode being connected to one of said two strands forming said slot and the cathode of said diode being connected to the other of said two strands.
  • the antenna when a plurality of electrical switches is suitably positioned, the antenna resonates at a plurality of resonant frequencies each located in a different frequency band BFRi.
  • the antenna comprising more than one electrical switch comprises at least one capacitive element intended to prevent the bias signal of each electrical switch from disturbing the polarization of another electrical switch.
  • the antenna In the case where the BAF frequency band is wide, for example the DVB-H frequency band ranging from 470 MHz to 860 MHz and the width of each reserved frequency band BFRi is equal to 20 MHz, the antenna then requires 20 electrical switches for complete sampling of the BAF frequency band. This is useful because such an antenna is then able to be used regardless of the frequency band reserved BFRi, that is to say regardless of the geographical area where the mobile phone device will be used and what that is the band of frequencies reserved for the deployment of a broadband application on this geographical zone.
  • the antenna In order to facilitate the implementation of such an antenna and to preserve the autonomy of the mobile telephone apparatus, the antenna must therefore include a limited number of electrical switches that allows partial sampling of the BAF frequency band. .
  • the antenna in order for the antenna to be able to be used regardless of the reserved frequency band BFRi for the deployment of a broadband application over a particular geographical area, the antenna includes a frequency band shifting means for shifting a frequency included in a frequency band determined by the switching of at least one electrical switch.
  • the antenna when the antenna will have to be adapted to communicate with a broadband application using a frequency band BFRn that it is not possible to obtain directly from the switching of one or more electrical switches of the antenna an approximate BFRm frequency band will be determined by switching one or more of these electrical switches and the frequency band BFRm will then be shifted by the frequency band shifting means until the frequency band BFRm covers the frequency band BFRn.
  • the frequency band shifting means is a voltage controlled element that shifts a frequency band by a value between a minimum value and a maximum offset value.
  • the frequency band shifting means is positioned so that a frequency band can be shifted regardless of the electrical switches used to select this band of frequencies.
  • an inductive type element is connected in series with each voltage source between said voltage source and the electrical switch which it polarizes.
  • An antenna according to the present invention comprises a set of strands excited by a radiofrequency signal whose geometry is determined so that the antenna resonates at a first resonance frequency when said set of strands is traversed by currents from its point of contact. excitation at one of its free ends, two strands of said set of strands being arranged in such a way that they are then traversed by said currents in the same direction and that they can be electromagnetically coupled to each other and electrically connected to each other by at least one other strand.
  • the antenna is characterized in that it is provided to be able to resonate according to a second resonance frequency determined by a slot which separates said two strands then electromagnetically coupled by circulation of currents in opposite directions on said two strands.
  • the frequency with which the antenna resonates is determined by the polarization of at least one electrical switch.
  • the Fig. 2a represents the block diagram of a first embodiment of a switching monopole antenna according to the present invention.
  • the antenna ANT2 comprises three radiating elements E1 to E3 which form between them a monopole MO whose total length is determined so that the antenna resonates at the lowest desired frequency F1 of the antenna, said frequency belonging to a band of reserved frequencies BFR1.
  • the radiating elements E1 to E3 are arranged in such a way that the strand B1 (here consisting of the radiating element E1) and the strand B3, part of the radiating element E3, are on the one hand traversed by surface currents. in the same direction when the antenna ANT2 is excited by a radiofrequency signal at the excitation point E and, secondly, sufficiently close to one another so that they can be electromagnetically coupled when these currents flow in opposite directions.
  • the strands B1 and B3 are electrically connected to each other by the other part of the radiating element E3 and the radiating element E2.
  • the antenna ANT2 comprises an electrical switch C1, one terminal of which is connected to the ends electrically connected to each other, by means of capacitors C, of the radiating elements E1 and E2 and the other terminal of which is connected to the free end of the strand B3 of the radiating element E3 of the monopole MO.
  • the electrical switch C1 when closed, bypasses the slot F which is formed between the strands B1 and B3.
  • a capacitor C interconnects the other ends of the radiating elements E2 and E3.
  • the referenced electrical switches are diodes, for example PIN diodes, controlled by polarization by means of appropriate control signals.
  • polarization signal and "control signal” are synonymous thereafter.
  • the electrical switch is here a diode C1 which is biased by a bias signal generated by a voltage source G1 and transmitted via an inductive element L1 connected in series.
  • a resistor Rr determines the value of the bias current and two inductive elements (one R between the free end of the strand B3 and the radiating element E2, the other Lr in series from the element E2 with the resistor Rr) are provided to ensure the return of the bias current to ground.
  • the inductive elements L1, Lr and Lr ' make it possible to avoid grounding, from a radiofrequency point of view, the antenna.
  • the additional inductive element L'r is used here so that the return to ground of the bias currents is as short as possible.
  • the diode C1 When the diode C1 is not biased by the voltage source G1, the diode is not conducting.
  • the equivalent diagram of the antenna ANT2 is then that which is represented at the Fig. 2b . It will be understood that the ANT2 then resonates at the frequency F1 which is determined by the geometry of the monopole MO.
  • antenna ANT2 is the seat of surface currents which are mainly concentrated on the strands B1 and B3, that is to say on the edges of a slot F which is formed by the strands B1 and B3 then in electromagnetic coupling because they are now traversed by surface currents of opposite directions.
  • This slot F is open at one of its ends (in this case, that which is located at the excitation point E of the antenna or that which is opposite to the end formed by the diode C1).
  • the antenna ANT2 then behaves like a slot antenna and resonates at a frequency F2 included in a reserved frequency band BFR2 which is essentially determined by the length of the slot F.
  • the Fig. 3a is a block diagram of a second embodiment of an ANT3 switching monopole antenna according to the present invention. It constitutes an improvement of the antenna of the Fig. 2a .
  • the elements of the Fig. 3a which are identical to the elements of the Fig. 2a , have the same references and are not more described.
  • the antenna ANT3 comprises four radiating elements E1, E1 ', E2 and E3 (the radiating element E1 of the antenna ANT2 shown in FIG. Fig. 2a is here split into two radiating elements E1 and E1 'connected to each other by means of a capacitor C) together forming a monopole MO.
  • the strand B1 is finally split into two strands B1 and B1 '. These strands B1 and B1 'can be electromagnetically coupled with the strand B3 of the radiating element E3.
  • a diode C2 has its anode which is connected to the common point between the strand B1 and the capacitor C connecting the strands B1 and B1 'while its cathode is connected to the strand B3 at a point of its length.
  • the diode C2 is biased by a bias signal generated by a voltage source G2 via an inductive element L2 connected in series with it. It will be understood that the return path to earth of the bias current of the diode C2 is provided by the same inductive elements R, Lr and Rr as for the diode C1.
  • the Fig. 3b is an equivalent diagram of the antenna ANT3 where only the diode C1 is passing and the Fig. 3c is an equivalent diagram of the antenna ANT3 where only the diode C2 is busy.
  • the voltage source G1 polarizes the anode of the diode C1, it becomes conductive. As before, it is the strands B1 and B'1 and the strand B3 which, in electromagnetic coupling, resonate so that the antenna ANT3 behaves then as a slot antenna whose length is that of strand B3.
  • the ANT2 resonates at a frequency F2 belonging to a frequency band reserved BFR2 in a manner identical to what happens for the antenna ANT2.
  • the generator G2 polarizes the anode of the diode C2
  • the latter becomes conductive and it is now the only strands B1 and B3 which are in electromagnetic coupling, the strand B3 only on the length between its end on the outlet side of the slot F and the point of connection of the cathode of the diode C2.
  • the antenna ANT3 then resonates on a given frequency by the now reduced length of the slot F '.
  • the ANT3 resonates at a frequency F3 belonging to a reserved frequency band BFR3 which is essentially determined by the slot F 'formed between the strands B1 and B3 and the passing C2 diode.
  • This slot F ' is open at one of its ends.
  • the frequency F3 is greater than the frequency F2 because the slot F 'has a depth less than the depth of the slot F because of the relative positioning of the diodes C1 and C2.
  • Figs. 2a and 3a represent two embodiments of a switching monopole antenna according to the present invention which are given to illustrate the concept of the invention. However, these examples do not limit the scope of the invention.
  • the Fig. 4 represents a block diagram of a third embodiment of an antenna according to the present invention which comprises, besides the means of the embodiment of the Fig. 3a , a frequency band offset means Va.
  • the embodiment of the Fig. 4 is given in relation to the embodiment of the Fig. 3a .
  • the elements of the Fig. 4 identical to those of the Fig. 3a , have the same references.
  • the frequency band offset means Va consists of a capacitive or inductive element connecting the strand B3 to the strand B3 'resulting from the split in these two strands of the radiating element E3. of the Fig. 3a .
  • the frequency band offset means Va has its impedance value which is voltage controlled by means of a voltage source G.
  • this frequency band offset means Va is a varactor whose capacitive value is determined by the bias voltage applied to its terminals. More precisely, the anode of the varactor Va is connected to the voltage source G via an inductance Lv and its cathode is connected to ground also via an inductance L'v.
  • the varactor Va is connected to strand B3 of monopole MO via a capacitor C provided so that the polarization of the element does not disturb that of strand B3.
  • the means Va makes it possible to shift a frequency band BFRi by a value between a minimum offset value Dmin which corresponds to a minimum voltage value Vmin across the terminals Va, that is to say when the means Va has a a high impedance at its terminals, and a maximum offset value Dmax which corresponds to a maximum voltage value Vmax across the means Va, that is to say when the means Va has a very low impedance at its terminals.
  • the frequency band offset means Va is positioned so that a frequency band BFRi can be shifted regardless of the diodes used to select this frequency band.
  • the frequency band offset means Va is set so that, in the case where only the diode C1 is conducting, the antenna may resonate at the frequency F2 included in the frequency band BFR2 which may be shifted by that the frequency band offset means Va is connected to one of the strands, in this case the strand B3, of the slot F.
  • This shift in the frequency band BFR2 occurs due to the influence of the impedance across the frequency band offset means Va which is controlled by the value of the variable control voltage across it.
  • each switching diode CN so that it connects two strands of the monopole MO that can be electromagnetically coupled rather than putting this diode in series with the monopole as was realized in state of the art, allows a single frequency band shift means Va is used to shift one of the frequency bands BFRi obtained by switching the diodes of the antenna.
  • the Fig. 5 represents a diagram illustrating the shift of a frequency band obtained by switching diodes of the antenna ANT4 of the Fig. 4 according to the present invention.
  • the antenna then resonates at the frequency F2 included in the BFR2 band while it would be desirable for it to resonate at a frequency F4 included in a BFR4 frequency band.
  • the frequency band offset means Va is then powered by a variable voltage which shifts the frequency F2 to the frequency F4.
  • the antenna ANT4 may resonate at the frequency F4 because the difference between the frequencies F2 and F4 is less than the maximum offset value Dmax. In the opposite case, the antenna ANT4 can not resonate at the frequency F4 when this one is obtained by offset of the frequency F2.

Landscapes

  • Variable-Direction Aerials And Aerial Arrays (AREA)
  • Details Of Aerials (AREA)

Claims (8)

  1. Antenne für eine Mobiltelefonie-Vorrichtung, umfassend einen Satz von Drähten (B1, B2, B3), der durch ein Hochfrequenzsignal angeregt wird und dessen Geometrie so festgelegt ist, dass die Antenne an einer ersten Resonanzfrequenz (F1) schwingt, sobald der Satz von Drähten von seinem Anregungspunkt (E) bis zu einem seiner freien Enden von Strömen durchquert wird, wobei zwei Drähte (B1, B3) des Satzes von Drähten so angeordnet sind, dass sie dann von den Strömen in derselben Richtung durchquert werden, wobei sie durch mindestens einen anderen Draht (B2) elektrisch miteinander verbunden sind und elektromagnetisch miteinander gekoppelt sind, dadurch gekennzeichnet, dass die zwei Drähte (B1, B3) elektromagnetisch miteinander gekoppelt sind, wenn sie von Strömen in entgegengesetzter Richtung durchquert werden,
    die Antenne weiterhin mindestens ein Mittel (C1, C2) zum elektrischen Verbinden der zwei Drähte (B1, B3) umfasst, damit zwischen ihnen ein Schlitz gebildet wird,
    die Antenne dann an einer zweiten Resonanzfrequenz (F2) schwingt, die durch die Geometrie des Schlitzes (F) festgelegt ist.
  2. Antenne nach Anspruch 1, dadurch gekennzeichnet, dass jedes Mittel (C1, C2) zum elektrischen Verbinden der zwei Drähte (B1, B3) ein elektrischer Vorspannungsschalter ist, wobei die Frequenz, an welcher die Antenne schwingt, dann durch die Vorspannung mindestens eines elektrischen Schalters festgelegt ist.
  3. Antenne nach Anspruch 2, dadurch gekennzeichnet, dass jeder elektrische Schalter (C1, C2) eine durch eine Spannungsquelle vorgespannte Diode ist, wobei die Anode der Diode mit einem der zwei Drähte (B1), die den Schlitz (F) bilden, verbunden ist, und die Kathode der Diode mit dem anderen der zwei Drähte (B3) verbunden ist.
  4. Antenne nach einem der Ansprüche 2 bis 3, wobei die Antenne mehr als einen elektrischen Schalter umfasst, dadurch gekennzeichnet, dass sie mindestens ein kapazitives Element (C) umfasst, das dazu bestimmt ist, zu vermeiden, dass das Vorspannungssignal jedes elektrischen Schalters die Vorspannung eines anderen elektrischen Schalters stört.
  5. Antenne nach einem der Ansprüche 2 bis 4, dadurch gekennzeichnet, dass sie ein Mittel zum Verschieben eines Frequenzbandes (Va) umfasst, das zum Verschieben einer Frequenz bestimmt ist, die sich in einem Frequenzband befindet, das durch das Schalten von mindestens einem elektrischen Schalter festgelegt ist.
  6. Antenne nach Anspruch 5, dadurch gekennzeichnet, dass das Mittel zum Verschieben eines Frequenzbandes (Va) ein spannungsgesteuertes Element ist, das es ermöglicht, ein Frequenzband um einen Wert zu verschieben, der zwischen einem minimalen Verschiebungswert und einem maximalen Verschiebungswert umfasst ist.
  7. Antenne nach Anspruch 5 oder 6, wobei die Antenne mehr als einen elektrischen Schalter umfasst, dadurch gekennzeichnet, dass das Mittel zum Verschieben eines Frequenzbandes (Va) so angeordnet ist, dass ein Frequenzband verschoben werden kann, und zwar unabhängig von den elektrischen Schaltern, die zur Auswahl dieses Frequenzbandes verwendet werden.
  8. Antenne nach einem der Ansprüche 3 bis 7, wobei ein Element des induktiven Typs (L1, L2) mit jeder Spannungsquelle (G1, G2) zwischen der Spannungsquelle und dem von ihr vorgespannten elektrischen Schalter (C1, C2) seriell geschaltet ist.
EP20080002226 2007-02-09 2008-02-07 Umschaltbare Monopolantenne Active EP1956682B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0700934A FR2912559B1 (fr) 2007-02-09 2007-02-09 Antenne monopole a commutation.

Publications (2)

Publication Number Publication Date
EP1956682A1 EP1956682A1 (de) 2008-08-13
EP1956682B1 true EP1956682B1 (de) 2013-01-09

Family

ID=38268809

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20080002226 Active EP1956682B1 (de) 2007-02-09 2008-02-07 Umschaltbare Monopolantenne

Country Status (2)

Country Link
EP (1) EP1956682B1 (de)
FR (1) FR2912559B1 (de)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2849288A1 (fr) * 2002-12-23 2004-06-25 Socapex Amphenol Une antenne de faible volume, notamment pour radiotelephones portatifs
FI115173B (fi) * 2002-12-31 2005-03-15 Filtronic Lk Oy Taitettavan radiolaitteen antenni
KR100666113B1 (ko) * 2003-12-13 2007-01-09 학교법인 한국정보통신학원 적층구조의 내장형 다중대역 안테나
KR100619695B1 (ko) * 2004-06-23 2006-09-08 엘지전자 주식회사 안테나 및 이를 구비한 휴대용 단말기

Also Published As

Publication number Publication date
FR2912559B1 (fr) 2009-04-03
FR2912559A1 (fr) 2008-08-15
EP1956682A1 (de) 2008-08-13

Similar Documents

Publication Publication Date Title
EP1374340B1 (de) Umschaltbare antenne
EP0604338B1 (de) Wenig Raum beanspruchende, breitbandige Antenne mit zugehörigem Sendeempfänger
FR2511821A1 (fr) Dispositif d'accord de recepteur de television
EP1805848B1 (de) Mehrbandige bedruckte helixförmige schlitzantenne
EP1145378B1 (de) Zweiband-übertragungsanordnung und eine antenne für diese anordnung
EP0667984B1 (de) Monopolantenne mit platten- und stabstrahlern
EP1699108B1 (de) Antenne mit schaltbaren strahlenden planar Elementen und Kommunikationsterminal mit denselben
FR2597266A1 (fr) Antenne a large bande
FR2578123A1 (fr) Reseau d'accouplement entre etages a bande changee comprenant un condensateur couple cote haut
EP1540768B1 (de) Helixförmige breitbandantenne
EP0934608B1 (de) Antennensystem für tragbares funkgerät
EP1956682B1 (de) Umschaltbare Monopolantenne
WO2009077529A2 (fr) Antenne active tres large bande pour radar passif
EP0492022B1 (de) Breitbandige Funkantenne mit kleinem Stehwellenverhältnis
EP0991135A1 (de) Selektive Antenne mit Frequenzumschaltung
EP1548877B1 (de) Multibandantenne mit planaren Strahlerflächen und tragbares Telefon mit einer derartigen Antenne
EP0578561B1 (de) Empfänger mit innerer Ferritantenne
EP2462701B1 (de) Schaltkreis für breitbandsignale
EP1715597B1 (de) Antenne mit planaren strahlenden Flächen mit Umschalt-Schaltkreis
EP1315237A1 (de) RF-Antenne
FR2958805A1 (fr) Antenne planaire compacte
FR2816114A1 (fr) Antenne multibande
FR2889361A1 (fr) Antenne du type a surface(s) rayonnante(s) plane(s) commutable(s) et terminal de communication mobile comportant cette antenne
EP1176663A1 (de) Mehrband-Mobiltelefon mit anpassbarer Antenne
FR2707124A1 (fr) Antenne ferrite pour récepteur portable.

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA MK RS

17P Request for examination filed

Effective date: 20081024

17Q First examination report despatched

Effective date: 20081215

AKX Designation fees paid

Designated state(s): DE ES FR GB IT

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: APPLE INC.

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE ES FR GB IT

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 602008021459

Country of ref document: DE

Effective date: 20130307

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130420

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20131031

26N No opposition filed

Effective date: 20131010

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130109

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20130311

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 602008021459

Country of ref document: DE

Effective date: 20131010

P01 Opt-out of the competence of the unified patent court (upc) registered

Effective date: 20230523

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20231214

Year of fee payment: 17

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20231212

Year of fee payment: 17