EP1515393B1 - Antenne à double bande pour reception en DVB-T - Google Patents

Antenne à double bande pour reception en DVB-T Download PDF

Info

Publication number
EP1515393B1
EP1515393B1 EP04020578A EP04020578A EP1515393B1 EP 1515393 B1 EP1515393 B1 EP 1515393B1 EP 04020578 A EP04020578 A EP 04020578A EP 04020578 A EP04020578 A EP 04020578A EP 1515393 B1 EP1515393 B1 EP 1515393B1
Authority
EP
European Patent Office
Prior art keywords
antenna
standing wave
frequency range
cable
wave trap
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.)
Not-in-force
Application number
EP04020578A
Other languages
German (de)
English (en)
Other versions
EP1515393A1 (fr
Inventor
Wolfgang Wendel
Ralf Epple
Sandhya Schmid
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.)
Hirschmann Electronics GmbH and Co KG
Hirschmann Electronics GmbH
Original Assignee
Hirschmann Electronics GmbH and Co KG
Hirschmann Electronics GmbH
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 Hirschmann Electronics GmbH and Co KG, Hirschmann Electronics GmbH filed Critical Hirschmann Electronics GmbH and Co KG
Publication of EP1515393A1 publication Critical patent/EP1515393A1/fr
Application granted granted Critical
Publication of EP1515393B1 publication Critical patent/EP1515393B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00Details of, or arrangements associated with, antennas
    • H01Q1/44Details of, or arrangements associated with, antennas using equipment having another main function to serve additionally as an antenna, e.g. means for giving an antenna an aesthetic aspect
    • H01Q1/46Electric supply lines or communication lines
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00Details of, or arrangements associated with, antennas
    • H01Q1/52Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00Antenna arrays or systems
    • H01Q21/30Combinations of separate antenna units operating in different wavebands and connected to a common feeder system
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q5/00Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
    • H01Q5/30Arrangements for providing operation on different wavebands
    • H01Q5/307Individual or coupled radiating elements, each element being fed in an unspecified way
    • H01Q5/314Individual or coupled radiating elements, each element being fed in an unspecified way using frequency dependent circuits or components, e.g. trap circuits or capacitors
    • H01Q5/328Individual or coupled radiating elements, each element being fed in an unspecified way using frequency dependent circuits or components, e.g. trap circuits or capacitors between a radiating element and ground
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q5/00Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
    • H01Q5/30Arrangements for providing operation on different wavebands
    • H01Q5/307Individual or coupled radiating elements, each element being fed in an unspecified way
    • H01Q5/314Individual or coupled radiating elements, each element being fed in an unspecified way using frequency dependent circuits or components, e.g. trap circuits or capacitors
    • H01Q5/335Individual or coupled radiating elements, each element being fed in an unspecified way using frequency dependent circuits or components, e.g. trap circuits or capacitors at the feed, e.g. for impedance matching
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q5/00Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
    • H01Q5/40Imbricated or interleaved structures; Combined or electromagnetically coupled arrangements, e.g. comprising two or more non-connected fed radiating elements

Definitions

  • the invention relates to an antenna device for signal reception, in particular for the reception of digital television signals, according to the features of the preamble of patent claim 1.
  • Such an antenna is off US-A-5977920 known.
  • an antenna device for signal reception in particular for the reception of digital television signals known.
  • This antenna device comprises an antenna with an antenna structure that is tuned to the frequency range to be received. At the base of the antenna structure, the received signals are coupled out and fed via a cable to a signal processing device.
  • a standing wave trap which is connected downstream of the base of an antenna in order to effectively suppress the generation of high-frequency power on the outer conductor of the antenna cable.
  • the aforementioned prior art thus provides a single antenna device which is tuned to a predefinable frequency range. Should be with an antenna, as from the DE 102 20 670.8 is known, more frequency ranges are received, a separate antenna or tuned antenna structure is required for each additional frequency range. This increases the construction costs of the entire antenna device.
  • the invention is therefore based on the object to provide an antenna device, in particular an antenna device for the signal reception of digital television signals, with the simple means in addition to the frequency range that can be received with the antenna, at least one further frequency range can be received.
  • the structure of such an antenna device according to the invention has several advantages.
  • the antenna or the antenna structure can be optimally tuned to the reception of a first frequency range.
  • the received signals are fed at the base of the antenna or the antenna structure via a first standing wave block in the antenna cable and fed to the signal processing device.
  • the first standing wave barrier With the first standing wave barrier, the generation of high-frequency power on the antenna cable or the outer conductor of the antenna cable is effectively suppressed.
  • the first standing wave barrier is followed by another standing wave barrier, which causes the antenna cable, in particular the outer conductor of a coaxial cable, to act as an antenna for the at least further frequency range between the two standing wave barriers.
  • the further standing wave blocking is dimensioned such that it acts only selectively in this frequency range to be received and frequency ranges above and / or below this frequency range are not damped thereby.
  • the antenna or the antenna structure is designed to receive signals in the UHF range (frequency range from 470 to 860 megahertz).
  • the standing wave barrier which is connected downstream of the base of the antenna structure, attenuates the UHF band. From this first standing wave blocking another frequency range (eg VHF, 170 to 230 megahertz) is not damped.
  • the antenna cable which is bounded by an at least further standing wave block for VHF, additionally receives VHF on the outer conductor (if the antenna cable is a coaxial cable, for example) and feeds the received signal via the first standing wave barrier, which does not attenuate VHF, into the Inner conductor of the antenna cable.
  • a further frequency range can be received solely by the use of a further standing wave barrier, without structural, structural or additional measures being required on the antenna of the antenna device.
  • the second sheath wave barrier thus causes so that the existing antenna cable acts as another antenna for the wider frequency range.
  • the figure shows an antenna device 1, which has an antenna 2 (or an antenna structure), as for example from the DE 102 20 670.8 is known.
  • the antenna 2 which may also be antennas other than planar surfaces, is tuned to the frequency range to be received, for example UHF in the frequency range of 470 to 860 megahertz.
  • a ground 3 ground plane or the like
  • the signals received from the antenna 2 at the root 4 are fed to a cable (antenna cable such as a coaxial cable having an inner conductor and an outer conductor) , About this cable 5, the received signals to a signal processing device 6 (such as a receiver, TV or the like).
  • the foot point 4 of the antenna 2 is followed by a first standing wave trap 7, which attenuates the frequency range received by the antenna 2 (here, for example, UHF 470 to 860 megahertz).
  • the frequency ranges below and / or above this first frequency range (UHF), however, are not attenuated.
  • a further, second standing wave blocking device 8 is provided between the first standing wave blocking device 7 and the signal processing device 6.
  • This further standing wave blocking device 8 causes a further frequency range (eg VHF 170 to 230 megahertz) to be additionally received via the outer conductor of the cable 5 and the received signal to be transmitted to the inner conductor of the first waveguide barrier 7 which does not attenuate the second frequency range Cable 5 is fed.
  • a further frequency range eg VHF 170 to 230 megahertz
  • VHF frequency range 170 to 230 megahertz
  • the antenna device 1 As shown in the figure, a simple and cost-effective way to be able to receive at least two frequency ranges can be provided without the need for two antennas 2 tuned to these frequency ranges.
  • the antenna cable which is required in any case, acts as an antenna for the at least second frequency range.
  • the aforementioned frequency ranges (UHF, VHF) are exemplary and are intended to illustrate the invention without being limited thereto.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
  • Details Of Aerials (AREA)

Claims (3)

  1. Dispositif à antenne (1) pour la réception d'un signal, notamment pour la réception de signaux de télévision numériques, comprenant une antenne (1) à la base (4) de laquelle sont découplés des signaux dans une première plage de fréquences par le biais d'un dispositif de blocage d'ondes d'enveloppe (7) et sont acheminés à un appareil de traitement de signal (6) par le biais d'un câble coaxial (5) comprenant un conducteur intérieur et un conducteur extérieur, le dispositif de blocage d'ondes d'enveloppe (7) agissant dans la première plage de fréquences, caractérisé en ce qu'est disposé entre le dispositif de blocage d'ondes d'enveloppe (7) et l'appareil de traitement de signal (6) au moins un dispositif de blocage d'ondes d'enveloppe (8) supplémentaire, lequel agit dans une autre plage de fréquences, et le conducteur extérieur du câble coaxial (5) entre le dispositif de blocage d'ondes d'enveloppe (7) et l'au moins un dispositif de blocage d'ondes d'enveloppe (8) supplémentaire fait office d'antenne pour l'au moins une autre plage de fréquences, et en ce que le signal reçu par le conducteur extérieur est injecté dans le conducteur intérieur du câble coaxial (5) par le biais du dispositif de blocage d'ondes d'enveloppe (7).
  2. Dispositif à antenne (1) selon la revendication 1, caractérisé en ce que l'écart (9) entre les au moins deux dispositifs de blocage d'ondes d'enveloppe (7, 8) est égal à environ une longueur d'onde de l'au moins une autre plage de fréquences ou une fréquence centrale ou encore la valeur moyenne de l'autre plage de fréquences.
  3. Dispositif à antenne (1) selon la revendication 1 ou 2, caractérisé en ce que la première plage de fréquences est la gamme UHF (470 à 860 Mégahertz) et l'au moins une autre plage de fréquences est la gamme VHF (170 à 230 Mégahertz).
EP04020578A 2003-09-11 2004-08-31 Antenne à double bande pour reception en DVB-T Not-in-force EP1515393B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10341964A DE10341964A1 (de) 2003-09-11 2003-09-11 Antenne für den DVB-T-Empfang
DE10341964 2003-09-11

Publications (2)

Publication Number Publication Date
EP1515393A1 EP1515393A1 (fr) 2005-03-16
EP1515393B1 true EP1515393B1 (fr) 2007-10-03

Family

ID=34129755

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04020578A Not-in-force EP1515393B1 (fr) 2003-09-11 2004-08-31 Antenne à double bande pour reception en DVB-T

Country Status (4)

Country Link
EP (1) EP1515393B1 (fr)
AT (1) ATE375014T1 (fr)
DE (2) DE10341964A1 (fr)
ES (1) ES2290597T3 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI448000B (zh) * 2009-05-20 2014-08-01 Sony Corp Antenna device

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3429661A1 (de) * 1984-08-11 1986-02-20 Richard Hirschmann Radiotechnisches Werk, 7300 Esslingen Rundfunk-empfangseinrichtung
DE4007824C2 (de) * 1990-03-12 1996-06-20 Lindenmeier Heinz Fahrzeugantenne für Funkdienste mit einem stabförmigen Antennenelement
DE4336355A1 (de) * 1993-10-25 1995-04-27 Hirschmann Richard Gmbh Co Empfangseinrichtung zum Empfang von elektromagnetischen Wellen unterschiedlicher Frequenzen
US5604506A (en) * 1994-12-13 1997-02-18 Trimble Navigation Limited Dual frequency vertical antenna
US5793336A (en) * 1996-06-10 1998-08-11 Antennas America, Inc. Conformal antenna assemblies
FR2758012B1 (fr) * 1996-12-27 1999-05-28 Thomson Csf Antenne double, en particulier pour vehicule
FI113103B (fi) * 1999-11-03 2004-02-27 Co Jot Oy Levyantenni
EP1289061A3 (fr) * 2001-08-24 2004-10-06 Hirschmann Electronics GmbH & Co. KG Système d'antennes

Also Published As

Publication number Publication date
ATE375014T1 (de) 2007-10-15
DE502004005117D1 (de) 2007-11-15
EP1515393A1 (fr) 2005-03-16
ES2290597T3 (es) 2008-02-16
DE10341964A1 (de) 2005-05-12

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