EP1500163B1 - Passive abstimmbare breitbandantenne - Google Patents

Passive abstimmbare breitbandantenne Download PDF

Info

Publication number
EP1500163B1
EP1500163B1 EP03747473A EP03747473A EP1500163B1 EP 1500163 B1 EP1500163 B1 EP 1500163B1 EP 03747473 A EP03747473 A EP 03747473A EP 03747473 A EP03747473 A EP 03747473A EP 1500163 B1 EP1500163 B1 EP 1500163B1
Authority
EP
European Patent Office
Prior art keywords
inductors
antenna
toroids
antenna according
spaces
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
EP03747473A
Other languages
English (en)
French (fr)
Other versions
EP1500163A2 (de
Inventor
Ronald Craig Davidson
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.)
Cobham Aerospace Communications Dourdan SA
Original Assignee
Chelton Antennas SA
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 Chelton Antennas SA filed Critical Chelton Antennas SA
Publication of EP1500163A2 publication Critical patent/EP1500163A2/de
Application granted granted Critical
Publication of EP1500163B1 publication Critical patent/EP1500163B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • H01Q9/06—Details
    • H01Q9/14—Length of element or elements adjustable
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q11/00—Electrically-long antennas having dimensions more than twice the shortest operating wavelength and consisting of conductive active radiating elements
    • H01Q11/02—Non-resonant antennas, e.g. travelling-wave antenna
    • H01Q11/08—Helical antennas

Definitions

  • the invention relates to a connectable antenna passive broadband.
  • An object of the invention is notably to provide an antenna adapted to operate in a range also range than the 30-512 MHz range.
  • a solution would consist of using at least two antennas of very different lengths, typically an antenna 2.5m tuned to 30MHz and a 15cm antenna tuned at 512MHz, preferably to a single antenna whose radiation pattern could not be satisfying at the same time for these two frequencies.
  • a frequently proposed solution is to use a radiating element consisting of several connected series of inductances and to provide to short-circuit the inductors individually and on demand (see for example US 4,564,843, US 4,656 483, US 4,862,184, US 4,924,238, US 6,169,523), which allows to tune the antenna to different frequencies according to the number of elements short-circuited.
  • An object of the present invention is to provide a an antenna whose selectivity is satisfactory in a very wide range of operating frequencies.
  • an antenna which comprises a radiating element consisting of several series-connected inductors and which includes means to short-circuit the inductors individually and on demand, characterized in that the antenna comprises also means to interrupt the link between any two successive inductances, in that each inductor is designed to delimit a space surrounded by the inductor and in which is circumscribed the magnetic field generated by the passage of a current in the inductance, in that the inductances are arranged so that these spaces are superimposed, and in that the means for shorting the inductances and means to interrupt the links between the inductors include switches arranged near the inductors and connected to control means placed remotely via electrical conductors crossing superimposed spaces.
  • the drivers are passed through a metal tube in the center of these spaces.
  • the inductances are constituted by toroids whose own resonance frequency is chosen to be higher than the highest frequency of operation of the antenna.
  • the present invention therefore makes it possible to the antenna over a wide range of frequencies and make vary its length according to the tuning frequency, so that the selectivity of the antenna is maintained at a high value.
  • the radiating element (1) of the antenna is constituted of toroids (Tn-1), (Tn), ... arranged horizontally.
  • the toroids have any shape (in a circle, in polygon, square, triangle, etc.) provided that the magnetic field generated by the passage of a current in the toroids is circumscribed to an area limited, which greatly reduces the inductance between the different toroids. All of the toroids is crossed by a metal tube (2) to inside which the drivers (3) who are connected by decoupling inductors (5) to switches that include switches such as (b) and (d) which are used to cut the toroids successive and switches such as (a) and (c) which serve to short-circuit the toroids individually.
  • the different toroids have frequencies of individual resonance identical or different but outside the operating band of the antenna.
  • the switches are made in this example and in a manner known in itself by capacitance-transistor couples (6,7) or by pairs of transistors opposite (8,9), depending on whether they are switches (b) and (d), or switches (a) and (c).
  • the invention is not limited to this example of production.

Landscapes

  • Variable-Direction Aerials And Aerial Arrays (AREA)

Claims (6)

  1. Abstimmbare Breitbandantenne, die ein abstrahlendes Element (1) umfaßt, das aus mehreren in Reihe geschalteten Induktivitäten gebildet ist, und die Mittel (a, c) umfaßt, um die Induktivitäten einzeln und steuerbar kurzschließen zu können, dadurch gekennzeichnet, daß die Antenne auch Mittel (b, d) zum Unterbrechen der Verbindung zwischen zwei beliebigen aufeinanderfolgenden Induktivitäten umfaßt, dadurch, daß jede Induktivität dafür konzipiert ist, einen von der Induktivität umschlossenen Raum abzugrenzen, wobei von diesem das vom Durchgang eines Stroms durch die Induktivität erzeugte magnetische Feld eingegrenzt ist, dadurch, daß die Induktivitäten derart angeordnet sind, daß ihre Räume übereinanderliegend sind, und dadurch, daß die Mittel (a, c) zum Kurzschließen der Induktivitäten und die Mittel (b, d) zum Unterbrechen der Verbindungen zwischen den Induktivitäten Schalter umfassen, die in der Nähe der Induktivitäten angeordnet sind und die mittels elektrischer Leiter (3), die die übereinanderliegenden Räume durchlaufen, mit entfernt angeordneten Steuermitteln (4) verbunden sind.
  2. Antenne nach Anspruch 1, die ein metallisches Rohr (2) umfaßt, in dem die Leiter (3) verlaufen.
  3. Antenne nach Anspruch 2, deren metallisches Rohr (2) durch den Mittelpunkt der Räume läuft.
  4. Antenne nach einem der Ansprüche 1 bis 3, deren Induktivitäten durch Toroiden (T) gebildet werden.
  5. Antenne nach Anspruch 4, bei der die Toroiden (T) im Ebenen eine Form haben, die unter den folgenden Formen gewählt ist: Kreis, Polygon, Quadrat, Dreieck.
  6. Antenne nach Anspruch 4 oder 5, bei der die Eigenresonanzfrequenz der Toroiden (T) so gewählt ist, daß sie höher als die höchste Betriebsfrequenz der Antenne ist.
EP03747473A 2002-04-29 2003-04-29 Passive abstimmbare breitbandantenne Expired - Lifetime EP1500163B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR0205349 2002-04-29
FR0205349A FR2839207B1 (fr) 2002-04-29 2002-04-29 Antenne accordable passive a large bande
PCT/FR2003/001341 WO2003094291A2 (fr) 2002-04-29 2003-04-29 Antenne accordable passive a large bande

Publications (2)

Publication Number Publication Date
EP1500163A2 EP1500163A2 (de) 2005-01-26
EP1500163B1 true EP1500163B1 (de) 2005-10-26

Family

ID=28800008

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03747473A Expired - Lifetime EP1500163B1 (de) 2002-04-29 2003-04-29 Passive abstimmbare breitbandantenne

Country Status (6)

Country Link
US (1) US20050200552A1 (de)
EP (1) EP1500163B1 (de)
AU (1) AU2003246871A1 (de)
DE (1) DE60302059T2 (de)
FR (1) FR2839207B1 (de)
WO (1) WO2003094291A2 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10760414B1 (en) * 2019-07-12 2020-09-01 Isodrill, Inc. Data transmission system

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4924238A (en) * 1987-02-06 1990-05-08 George Ploussios Electronically tunable antenna
US6028558A (en) * 1992-12-15 2000-02-22 Van Voorhies; Kurt L. Toroidal antenna
US5870681A (en) * 1995-12-28 1999-02-09 Lucent Technologies, Inc. Self-steering antenna array
FR2759497A1 (fr) * 1997-02-07 1998-08-14 Thomson Csf Antenne a geometrie variable
FR2760900B1 (fr) * 1997-03-17 1999-05-28 Centre Nat Etd Spatiales Antenne pour satellite a defilement
US6337664B1 (en) * 1998-10-21 2002-01-08 Paul E. Mayes Tuning circuit for edge-loaded nested resonant radiators that provides switching among several wide frequency bands
US6169523B1 (en) * 1999-01-13 2001-01-02 George Ploussios Electronically tuned helix radiator choke
US6606075B1 (en) * 2001-06-07 2003-08-12 Luxul Corporation Modular wireless broadband antenna tower
US6664938B2 (en) * 2002-03-01 2003-12-16 Ems Technologies Canada, Ltd. Pentagonal helical antenna array

Also Published As

Publication number Publication date
US20050200552A1 (en) 2005-09-15
AU2003246871A1 (en) 2003-11-17
DE60302059D1 (de) 2005-12-01
WO2003094291A3 (fr) 2004-04-01
WO2003094291A2 (fr) 2003-11-13
EP1500163A2 (de) 2005-01-26
DE60302059T2 (de) 2006-07-20
FR2839207A1 (fr) 2003-10-31
FR2839207B1 (fr) 2004-07-16

Similar Documents

Publication Publication Date Title
EP0021762A1 (de) Elektronisch abgestimmtes Antennensystem
EP1291967B1 (de) Mehrfrequenzantenne
EP1407512B1 (de) Antenne
AU2002354223A1 (en) Dual resonance antenna apparatus
CA2075451A1 (fr) Antenne radioelectrique elementaire miniaturisee
EP1699108B1 (de) Antenne mit schaltbaren strahlenden planar Elementen und Kommunikationsterminal mit denselben
CN110741507B (zh) 一种多频天线及移动终端
EP1500163B1 (de) Passive abstimmbare breitbandantenne
FR2597266A1 (fr) Antenne a large bande
US7129907B2 (en) Broadband tunable antenna and transceiver systems
US9130274B1 (en) Systems and methods for providing distributed load monopole antenna systems
CN206441845U (zh) 一种双带动态可调的太赫兹带通滤波器
CA2462721A1 (en) Antenna system utilizing elevated, resonant, radial wires
EP0241921B1 (de) Antenne mit hohem Wirkungsgrad
EP0446108A1 (de) Dielektrischer Resonator mit Mikrowellenmetallstreifen und mit diesem Resonator ausgerüstete Vorrichtung
US7355494B2 (en) Band-pass filter
WO2009077529A2 (fr) Antenne active tres large bande pour radar passif
EP3008773B1 (de) Verfahren zur radioelektrifizierung eines strassenmöbelobjekts sowie auf diese weise radioelektrifiziertes objekt
JP2009130813A (ja) 地上デジタル放送受信用アンテナ及び地上デジタル放送受信用アンテナ装置
EP1532713B1 (de) Hektometrische wellen ubertragungsantenne
GB2422959A (en) A method of variable tuning for a loop antenna
FR2785472A1 (fr) Filtre dielectrique, en particulier pour systeme de communication mobile
JPH09260902A (ja) スタブ型フィルタ
FR2650441A1 (fr) Antenne radioelectrique a tres large bande et a faible taux d'onde stationnaire
FR2526232A1 (fr) Perfectionnements apportes aux cavites resonnantes du type lignes de transmission

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

17P Request for examination filed

Effective date: 20041102

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL LT LV MK

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): BE DE FR GB

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REF Corresponds to:

Ref document number: 60302059

Country of ref document: DE

Date of ref document: 20051201

Kind code of ref document: P

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 20060213

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

Ref country code: BE

Payment date: 20060403

Year of fee payment: 4

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

Ref country code: FR

Payment date: 20060414

Year of fee payment: 4

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

Ref country code: DE

Payment date: 20060428

Year of fee payment: 4

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

26N No opposition filed

Effective date: 20060727

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20070429

BERE Be: lapsed

Owner name: *CHELTON ANTENNAS

Effective date: 20070430

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

Ref country code: DE

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

Effective date: 20071101

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

Ref country code: BE

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

Effective date: 20070430

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

Ref country code: GB

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

Effective date: 20070429

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: 20070430