EP1101253B1 - Antenne a grande largeur de bande - Google Patents

Antenne a grande largeur de bande Download PDF

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Publication number
EP1101253B1
EP1101253B1 EP99952261A EP99952261A EP1101253B1 EP 1101253 B1 EP1101253 B1 EP 1101253B1 EP 99952261 A EP99952261 A EP 99952261A EP 99952261 A EP99952261 A EP 99952261A EP 1101253 B1 EP1101253 B1 EP 1101253B1
Authority
EP
European Patent Office
Prior art keywords
antenna
frequency
antenna elements
conductor surface
counterweight
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
EP99952261A
Other languages
German (de)
English (en)
Other versions
EP1101253A1 (fr
Inventor
Nikolaus Dellantoni
Peter-Ernst Veith
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Publication of EP1101253A1 publication Critical patent/EP1101253A1/fr
Application granted granted Critical
Publication of EP1101253B1 publication Critical patent/EP1101253B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/28—Combinations of substantially independent non-interacting antenna units or systems
    • 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
    • H01Q1/362—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith for broadside radiating helical antennas
    • 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
    • H01Q5/40—Imbricated or interleaved structures; Combined or electromagnetically coupled arrangements, e.g. comprising two or more non-connected fed radiating elements
    • H01Q5/45—Imbricated or interleaved structures; Combined or electromagnetically coupled arrangements, e.g. comprising two or more non-connected fed radiating elements using two or more feeds in association with a common reflecting, diffracting or refracting device

Definitions

  • the present invention relates to an antenna for transmission or receiving signals with at least a first and second antenna element for transmitting or receiving Signals of the same frequency, the antenna elements spirally formed, arranged parallel to each other, each individually with a common conductor surface in Connected in parallel and capacitive across the conductor surface are coupled to a high frequency counterweight.
  • Antennas can be used because of their compact design internal antennas in telecommunications devices, such as for example cordless phones.
  • Spiral antenna elements for the antennas of telecommunications devices are e.g. from DE 196 39 642 A1 known, wherein a retractable antenna device with a helical antenna section is disclosed.
  • DE 42 05 084 A1 is a pair of conductor structures for receiving electromagnetic Waves known in which each element of the pair to form an overall structure of series interconnected Individual elements in a stack Layers built up, and each individual element pair of each Level is formed in the opposite direction of rotation.
  • the individual elements of each level are as spiral planar structures formed. Measures that are easy to detune of the antennas by capacitive influences of the Reduce the environment or the bandwidth of the antennas a single antenna will increase in these Documents not handled.
  • the object of the present invention is therefore a To provide an antenna for sending or receiving signals, the higher bandwidth and better Adaptation to a high-frequency counterweight and a feed line system allows.
  • This task is carried out by an antenna for transmitting or Received signals solved, with at least a first and second antenna element for transmitting or receiving Signals of the same frequency, the antenna elements spirally formed, arranged parallel to each other, each individually with a common conductor surface in Connected in parallel and capacitive across the conductor surface are coupled to a high frequency counterweight.
  • the antenna according to the invention less sensitive to capacitive influences from the environment. Farther can by at the base or feed point of the antenna induced higher and better distributed currents the two or more antenna elements better to the high-frequency counterweight or adapted the feed line system become.
  • the antenna elements are by a capacitive Coupling element coupled to the high-frequency counterweight.
  • the capacitive coupling element can comprise conductor areas, the one on opposite sides of the high frequency counterweight are printed.
  • Figure 1 is a plan view of a preferred embodiment an antenna 1 according to the present invention shown, the three spiral arranged in parallel Has antenna elements 2.
  • the antenna elements 2 are on a high-frequency counterweight 3 coupled from a rectangular conductor surface or from one with circuit boards printed dielectric can exist.
  • the antenna elements 2 comprise spirals made of metal, the Central axes parallel to each other and horizontally or vertically are arranged at the level of the high-frequency counterweight, as can be seen from FIGS. 1 and 2.
  • the three antenna elements 2 are with a high-frequency counterweight 3 printed first conductor surface 4 connected.
  • the first conductor surface 4 is on a side surface of the high-frequency counterweight printed on a corner.
  • the first Conductor surface 4 is connected to an infeed point 7 Feed line 8 connected by the antenna elements 2 receives received signals to a high-frequency module 9 or the antenna elements 2 signals to be emitted by the high-frequency module 9 feeds.
  • the high frequency counterweight printed a third conductor surface 6, which corresponds approximately to the size of the conductor surface 5 and is not below the conductor surface 4, so that a capacitive coupling element consisting of the conductor surface 4 for coupling the antenna elements 2 to the high-frequency counterweight given is.
  • the three antenna elements 2 are connected in parallel, d. H. they are each individually with the first conductor surface 4 and are connected via a common feed point 7 on the first conductor surface 4 the high-frequency module 9 connected.
  • the antenna elements 2 By at the foot of the antenna, d. H. in the first conductor surface 4 induced higher and better distributed currents can the antenna elements 2 very well to the high-frequency counterweight 3 and the approximately 50 ohm impedance of the Feed line 8 can be adjusted. By using 3 parallel antenna elements 2 can have a large useful bandwidth be achieved.
  • FIG. 3 shows the standing wave factor for an antenna with one, two and three spiral antenna elements 2 in the frequency band between 880 and 960 MHz (medium frequency 920 MHz).
  • the first curve A represents the standing wave factor for an antenna with one antenna element
  • the second curve B represents the standing wave factor for an antenna with two antenna elements
  • the third curve C represents the standing wave factor for an antenna with three antenna elements f 01 , f 02 , f 03 the respective beginning of the useful band and those with f e1 , f e2 and f e3 the respective end of the useful band.
  • Curve C shows the standing wave factor of an antenna, the structure of which corresponds to that of antenna 1 in FIG. 1 and in FIG. 2.
  • Curve B has essentially the same structure, but only two parallel spiral antenna elements 2.
  • the antenna of curve A has only one spiral antenna element.
  • the bandwidth is the antenna with a spiral antenna element 6.2% (curve A), the bandwidth of an antenna with two antenna elements about 16% (curve B) and the bandwidth of an antenna with three antenna elements about 24% (curve C).
  • curve A the bandwidth of an antenna with a spiral antenna element 6.2%
  • curve B the bandwidth of an antenna with two antenna elements about 16%
  • curve C the bandwidth of an antenna with three antenna elements about 24%
  • FIGS and 2 are the return loss, the Foot impedance or the standing wave factor of that in FIGS and 2 shown antenna arrangement in the frequency band between 880 MHz and 960 MHz (medium frequency 920 MHz) are shown. How it can be seen that the 3dB useful bandwidth is approximately 820-995 MHz.
  • the foot impedance in the signal band is approximately (60 + ix9) ohms at 880 MHz and (58-ix13) ohms at 960 MHz.
  • the standing wave ratio is about 1: 1.3 at 880 MHz and 1: 1.4 at 960 MHz.
  • the antenna according to the invention is therefore universally suitable for mobile and compact stationary cordless devices, basic and Relay stations of the various telecommunication standards in frequency ranges up to 3 GHz.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Details Of Aerials (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)
  • Support Of Aerials (AREA)

Claims (1)

  1. Antenne (1) pour l'émission resp. la réception de signaux, comprenant au moins un premier et un deuxième élément d'antenne (2) pour l'émission resp. la réception de signaux de même fréquence, les éléments d'antenne (2) étant conçus de forme hélicoïdale, disposés parallèlement les uns aux autres, reliés chacun individuellement en montage parallèle à une surface conductrice (4) commune et couplés de manière capacitive à un contrepoids haute fréquence (3) au moyen de la surface conductrice (4).
EP99952261A 1998-08-07 1999-08-02 Antenne a grande largeur de bande Expired - Lifetime EP1101253B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19835878 1998-08-07
DE19835878A DE19835878A1 (de) 1998-08-07 1998-08-07 Antenne mit großer Bandbreite
PCT/DE1999/002403 WO2000008711A1 (fr) 1998-08-07 1999-08-02 Antenne a grande largeur de bande

Publications (2)

Publication Number Publication Date
EP1101253A1 EP1101253A1 (fr) 2001-05-23
EP1101253B1 true EP1101253B1 (fr) 2002-04-24

Family

ID=7876870

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99952261A Expired - Lifetime EP1101253B1 (fr) 1998-08-07 1999-08-02 Antenne a grande largeur de bande

Country Status (5)

Country Link
US (1) US6404406B2 (fr)
EP (1) EP1101253B1 (fr)
CN (1) CN1312965A (fr)
DE (2) DE19835878A1 (fr)
WO (1) WO2000008711A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100788676B1 (ko) * 2005-12-21 2007-12-26 삼성전자주식회사 안테나 유니트, 안테나 유니트 제어 방법 및 그 안테나유니트를 갖는 모바일 단말기
EP2023436A1 (fr) * 2006-06-30 2009-02-11 Palm, Inc. Terminal mobile avec deux antennes pour réduire l'exposition aux rayonnements radiofréquence de l'utilisateur.

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2583745A (en) * 1948-12-02 1952-01-29 Miller Rody High-frequency antenna
NL279396A (fr) 1961-06-13
GB2050701B (en) 1979-05-08 1983-08-03 Secr Defence Radio antennae structures
US5343214A (en) * 1983-09-23 1994-08-30 The Allen Telecom Group, Inc. Cellular mobile communications antenna
US5041842A (en) * 1990-04-18 1991-08-20 Blaese Herbert R Helical base station antenna with support
AU1346592A (en) * 1991-01-24 1992-08-27 Rdi Electronics, Inc. Broadband antenna
DE4205084A1 (de) * 1992-02-17 1993-09-02 Karl Harms Handels Gmbh & Co K Vorrichtung zum empfangen elektromagnetischer wellen, insbesondere fuer diebstahlsicherungssysteme
US5345248A (en) * 1992-07-22 1994-09-06 Space Systems/Loral, Inc. Staggered helical array antenna
CA2127079C (fr) * 1993-06-30 1998-09-22 Naonobu Yamamoto Antenne a elements d'emission-reception a frequences differentes
US5714959A (en) * 1994-06-09 1998-02-03 Delco Electronics Corporation Glass patch cellular antenna
US5812093A (en) * 1995-09-29 1998-09-22 Motorola, Inc. Antenna assembly for a wireless-communication device
DE19614362C1 (de) * 1996-04-11 1997-07-31 Siemens Ag Antenne für ein Diebstahlschutzsystem eines Kraftfahrzeugs
JP3669117B2 (ja) * 1997-07-23 2005-07-06 松下電器産業株式会社 ヘリカルアンテナ及びその製造方法
US6215451B1 (en) * 1997-11-17 2001-04-10 Allen Telecom Inc. Dual-band glass-mounted antenna
NO993414L (no) * 1998-07-22 2000-01-23 Vistar Telecommunications Inc Integrert antenne
US6243052B1 (en) * 1999-11-16 2001-06-05 Harris Corporation Low profile panel-configured helical phased array antenna with pseudo-monopulse beam-control subsystem

Also Published As

Publication number Publication date
US20010050655A1 (en) 2001-12-13
US6404406B2 (en) 2002-06-11
WO2000008711A1 (fr) 2000-02-17
EP1101253A1 (fr) 2001-05-23
CN1312965A (zh) 2001-09-12
DE59901312D1 (de) 2002-05-29
DE19835878A1 (de) 2000-02-17

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