EP0825673A1 - Ebene gedruckte Antenne mit kurzgeschlossenen übereinanderliegenden Elementen - Google Patents

Ebene gedruckte Antenne mit kurzgeschlossenen übereinanderliegenden Elementen Download PDF

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Publication number
EP0825673A1
EP0825673A1 EP97460030A EP97460030A EP0825673A1 EP 0825673 A1 EP0825673 A1 EP 0825673A1 EP 97460030 A EP97460030 A EP 97460030A EP 97460030 A EP97460030 A EP 97460030A EP 0825673 A1 EP0825673 A1 EP 0825673A1
Authority
EP
European Patent Office
Prior art keywords
antenna
conductive elements
conductive
elements
conductive element
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.)
Granted
Application number
EP97460030A
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English (en)
French (fr)
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EP0825673B1 (de
Inventor
Georges Kossiavas
Josiane Cazajous
Albert Papiernik
Philippe Ratajczak
Patrice Brachat
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.)
Gula Consulting LLC
Original Assignee
France Telecom SA
Gula Consulting LLC
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Filing date
Publication date
Application filed by France Telecom SA, Gula Consulting LLC filed Critical France Telecom SA
Publication of EP0825673A1 publication Critical patent/EP0825673A1/de
Application granted granted Critical
Publication of EP0825673B1 publication Critical patent/EP0825673B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • 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
    • H01Q9/0414—Substantially flat resonant element parallel to ground plane, e.g. patch antenna in a stacked or folded configuration
    • 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

Definitions

  • the field of the invention is that of weak electromagnetic antennas dimensions likely to function, depending on their geometry, of a few hundred MHz to a few GHz.
  • the invention relates to a planar printed antenna of low dimensions.
  • Small antennas have many applications, such as example communications with mobiles (the antennas are in this case placed in portable mobile terminals cooperating with radio networks terrestrial or satellite), proximity communications (between computers or interior of a building for example), for identification devices, etc.
  • planar antennas of low dimensions we know in particular, as examples of planar antennas of low dimensions, the quarter wave antenna, the inverted F antenna (or PIFA, for "Planar Inverted F Antenna ", the single-layer Type C antenna and the antenna in H.
  • the invention particularly aims to overcome these various drawbacks of the state of the art.
  • one of the objectives of the present invention is to provide a very small footprint, that is to say very small, planar printed antenna weak compared to the operating wavelength.
  • the invention also aims to provide such an antenna with low dimensions which has a large bandwidth.
  • Another objective of the invention is to provide a dual band antenna of weak dimensions.
  • the general principle of the invention therefore consists in introducing a short circuit between two superimposed conductive elements (or "patches”), at least one of which has a slot.
  • the present invention makes it possible to obtain different antenna structures of very small dimensions (typically 35 mm x 35 mm) which can operate around 2 GHz. It is clear that with even smaller dimensions, they can operate at higher frequencies.
  • At least a second short circuit connects said first element conductor and said ground plane.
  • said first dielectric substrate and / or said second substrate dielectric belong to the group comprising air and other dielectrics.
  • each of said first and second conductive elements has a "C" shape and has a slot defining first and second free ends, and the first free ends of the first and second conductive elements are connected by said first short circuit.
  • This advantageous embodiment of the invention is called type C antenna multi-layer short-circuited.
  • the term multilayer indicates the presence of two elements superimposed conductors.
  • each of said first and second conductive elements has a shape identical to that of a conductive element of a single-layer type C antenna.
  • the short-circuited multilayer type C antenna of the invention is obtained by "folding" the dipole folded around its plane of symmetry. In other words, we goes completely against the technique previously used since we keep the two antenna halves, not just one of the two. According to the invention, these two antenna halves, which are identical and superimposed, constitute the two elements conductors. The metal strip which connects them constitutes the first short circuit between the two conductive elements.
  • Short-circuited multi-layer Type C antenna seems to use the first mode (usually non-radiating) of the folded dipole. Assuming the distribution is maintained of the first mode of the folded dipole, the two antenna halves, now superimposed, have similar current distributions and their radiation are added. The radiation is thus created while decreasing in a ratio 2 the surface of the antenna.
  • the invention therefore relates to a planar antenna of small dimensions comprising in particular two conducting elements (or “patches”) superimposed (parallel to a ground plan) and short-circuits between them.
  • the lower conductive element and the plane of ground can also be short-circuited.
  • the two conductive elements can have one or more slots.
  • FIGS. 2, 3 and 4 each show a perspective side view and from above respectively, of this multi-layer type C antenna short-circuited according to the invention.
  • This antenna comprises a ground plane 1 and two conductive elements superimposed 2, 3 (so-called lower 2 and upper 3 conducting elements). She understands also coaxial power 4.
  • the lower 2 and upper 3 conductive elements are identical. Each has a "C" shape, a 5, 5 'slot made in an initially square shape defining a first 6, 6 'and a second 7, 7' free ends. The first free ends 6, 6 'of the two conductive elements 2, 3 are connected by a short circuit 8.
  • Figure 1 shows a top view of a folded dipole known from the state of the technical.
  • the short-circuited multilayer type C antenna of the invention is obtained by "folding" this dipole folded around its axis of symmetry xx '. These are the two halves antenna, identical and superimposed, which constitute the lower conductive elements 2 and higher 3.
  • the metal strip which connects them constitutes the short circuit 8 between these two conductive elements 2, 3.
  • Short-circuited multi-layer Type C antenna seems to use the first mode (usually non-radiating) of the folded dipole. Assuming the distribution is maintained of the first mode of the folded dipole, the two antenna halves, now superimposed, have similar current distributions and their radiation are added. The radiation is thus created while decreasing in a ratio 2 the surface of the antenna.
  • the antenna is entirely metallic.
  • the antenna has a thickness of 6 mm (h 1 + h 2 ), and a total size of 20 x 20 x 6 mm.
  • the antenna has a thickness of 3 mm (h 1 + h 2 ), and a total size of 13.5 x 13.5 x 6 mm.
  • Figures 6 (a) and 6 (b) each show a radiation pattern of this first example of short-circuited multi-layer type C antenna, for polarization main (fig. 6 (a)) and cross polarization (fig. 6 (b)) respectively.
  • Figure 6 (c) presents a table of correspondence of the references of the contour lines of the figures 6 (a) and 6 (b).
  • Figure 5 compares the dimensions of the antennas according to the different embodiments of the invention with those of conventional antennas.
  • the square 91 of side ⁇ / 12, with ⁇ the operating wavelength of the antenna, corresponds to the dimensions of the superimposed and short-circuited conductive elements of the multilayer type C antenna of the invention.
  • This type C antenna multilayer is, to the knowledge of the depositors, the smallest that has been carried out. Her reduced bandwidth (2.5%) could be increased by optimizing its geometry.
  • the square 93 of side ⁇ / 2 recalls the dimensions of the single conductive element conventional antennas.

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  • Waveguide Aerials (AREA)
  • Details Of Aerials (AREA)
EP97460030A 1996-08-21 1997-08-14 Ebene Antenne mit kurzgeschlossenen übereinanderliegenden Elementen Expired - Lifetime EP0825673B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9610459 1996-08-21
FR9610459A FR2752646B1 (fr) 1996-08-21 1996-08-21 Antenne imprimee plane a elements superposes court-circuites

Publications (2)

Publication Number Publication Date
EP0825673A1 true EP0825673A1 (de) 1998-02-25
EP0825673B1 EP0825673B1 (de) 2010-12-15

Family

ID=9495216

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97460030A Expired - Lifetime EP0825673B1 (de) 1996-08-21 1997-08-14 Ebene Antenne mit kurzgeschlossenen übereinanderliegenden Elementen

Country Status (6)

Country Link
US (1) US5986606A (de)
EP (1) EP0825673B1 (de)
CN (1) CN1174522C (de)
CA (1) CA2213155A1 (de)
DE (1) DE69740078D1 (de)
FR (1) FR2752646B1 (de)

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JP3449484B2 (ja) * 1997-12-01 2003-09-22 株式会社東芝 多周波アンテナ
US6121932A (en) * 1998-11-03 2000-09-19 Motorola, Inc. Microstrip antenna and method of forming same
FI106077B (fi) * 1998-11-04 2000-11-15 Nokia Mobile Phones Ltd Antennikytkentälaite ja -järjestelmä radiotietoliikennelaitteen liittämiseksi ulkoisiin laitteisiin
US6218991B1 (en) 1999-08-27 2001-04-17 Mohamed Sanad Compact planar inverted F antenna
WO2001028035A1 (en) 1999-10-12 2001-04-19 Arc Wireless Solutions, Inc. Compact dual narrow band microstrip antenna
US20010050643A1 (en) * 2000-02-22 2001-12-13 Igor Egorov Small-size broad-band printed antenna with parasitic element
US6268831B1 (en) * 2000-04-04 2001-07-31 Ericsson Inc. Inverted-f antennas with multiple planar radiating elements and wireless communicators incorporating same
US6429819B1 (en) 2001-04-06 2002-08-06 Tyco Electronics Logistics Ag Dual band patch bowtie slot antenna structure
US6680704B2 (en) * 2001-05-03 2004-01-20 Telefonaktiebolaget Lm Ericsson(Publ) Built-in patch antenna
FR2825836B1 (fr) * 2001-06-08 2005-09-23 Centre Nat Rech Scient Antenne resonante omnidirectionnelle
FR2825837B1 (fr) * 2001-06-12 2006-09-08 Cit Alcatel Antenne compacte multibande
US6456243B1 (en) 2001-06-26 2002-09-24 Ethertronics, Inc. Multi frequency magnetic dipole antenna structures and methods of reusing the volume of an antenna
US7203533B1 (en) * 2001-08-15 2007-04-10 Bellsouth Intellectual Property Corp. Multipurpose antenna accessory for protection of portable wireless communication devices
US6573867B1 (en) 2002-02-15 2003-06-03 Ethertronics, Inc. Small embedded multi frequency antenna for portable wireless communications
KR100483043B1 (ko) * 2002-04-11 2005-04-18 삼성전기주식회사 멀티밴드 내장 안테나
US6943730B2 (en) * 2002-04-25 2005-09-13 Ethertronics Inc. Low-profile, multi-frequency, multi-band, capacitively loaded magnetic dipole antenna
US6744410B2 (en) * 2002-05-31 2004-06-01 Ethertronics, Inc. Multi-band, low-profile, capacitively loaded antennas with integrated filters
US20040017318A1 (en) * 2002-07-26 2004-01-29 Amphenol Socapex Antenna of small dimensions
US6995709B2 (en) * 2002-08-19 2006-02-07 Raytheon Company Compact stacked quarter-wave circularly polarized SDS patch antenna
US6859175B2 (en) 2002-12-03 2005-02-22 Ethertronics, Inc. Multiple frequency antennas with reduced space and relative assembly
US6911940B2 (en) * 2002-11-18 2005-06-28 Ethertronics, Inc. Multi-band reconfigurable capacitively loaded magnetic dipole
US7084813B2 (en) * 2002-12-17 2006-08-01 Ethertronics, Inc. Antennas with reduced space and improved performance
US6919857B2 (en) * 2003-01-27 2005-07-19 Ethertronics, Inc. Differential mode capacitively loaded magnetic dipole antenna
US7123209B1 (en) 2003-02-26 2006-10-17 Ethertronics, Inc. Low-profile, multi-frequency, differential antenna structures
US7034769B2 (en) * 2003-11-24 2006-04-25 Sandbridge Technologies, Inc. Modified printed dipole antennas for wireless multi-band communication systems
US7095382B2 (en) * 2003-11-24 2006-08-22 Sandbridge Technologies, Inc. Modified printed dipole antennas for wireless multi-band communications systems
DE602004020867D1 (de) * 2004-05-05 2009-06-10 Tdk Corp Gefaltete flächige Antenne
FI20055420A0 (fi) 2005-07-25 2005-07-25 Lk Products Oy Säädettävä monikaista antenni
FI119009B (fi) 2005-10-03 2008-06-13 Pulse Finland Oy Monikaistainen antennijärjestelmä
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KR100688648B1 (ko) 2005-12-30 2007-03-02 아로 주식회사 단락 스터브를 이용한 이동통신단말기용 다중대역 내장형안테나
US8618990B2 (en) 2011-04-13 2013-12-31 Pulse Finland Oy Wideband antenna and methods
FI20075269A0 (fi) 2007-04-19 2007-04-19 Pulse Finland Oy Menetelmä ja järjestely antennin sovittamiseksi
FI120427B (fi) 2007-08-30 2009-10-15 Pulse Finland Oy Säädettävä monikaista-antenni
FI20096134A0 (fi) 2009-11-03 2009-11-03 Pulse Finland Oy Säädettävä antenni
FI20096251A0 (sv) 2009-11-27 2009-11-27 Pulse Finland Oy MIMO-antenn
US8847833B2 (en) 2009-12-29 2014-09-30 Pulse Finland Oy Loop resonator apparatus and methods for enhanced field control
FI20105158A (fi) 2010-02-18 2011-08-19 Pulse Finland Oy Kuorisäteilijällä varustettu antenni
US9406998B2 (en) 2010-04-21 2016-08-02 Pulse Finland Oy Distributed multiband antenna and methods
WO2012036221A1 (ja) * 2010-09-15 2012-03-22 ソニーケミカル＆インフォメーションデバイス株式会社 アンテナ装置、及び、通信装置
FI20115072A0 (fi) 2011-01-25 2011-01-25 Pulse Finland Oy Moniresonanssiantenni, -antennimoduuli ja radiolaite
US8648752B2 (en) 2011-02-11 2014-02-11 Pulse Finland Oy Chassis-excited antenna apparatus and methods
US9673507B2 (en) 2011-02-11 2017-06-06 Pulse Finland Oy Chassis-excited antenna apparatus and methods
EP2495809B1 (de) * 2011-03-03 2017-06-07 Nxp B.V. Mehrbandantenne
WO2012129901A1 (zh) * 2011-04-01 2012-10-04 深圳光启高等理工研究院 一种天线及具有该天线的mimo天线
CN102760941B (zh) * 2011-04-29 2015-11-18 深圳光启高等理工研究院 一种具有多层基片的超材料射频天线及其制备方法
KR101690259B1 (ko) * 2011-05-27 2016-12-28 삼성전자주식회사 안테나 구조체
US8866689B2 (en) 2011-07-07 2014-10-21 Pulse Finland Oy Multi-band antenna and methods for long term evolution wireless system
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JPS6058704A (ja) * 1983-09-09 1985-04-04 Nippon Telegr & Teleph Corp <Ntt> 複共振形逆ｆアンテナ
FR2552938A1 (fr) * 1983-10-04 1985-04-05 Dassault Electronique Dispositif rayonnant a structure microruban perfectionnee et application a une antenne adaptative
JPS6141205A (ja) * 1984-08-01 1986-02-27 Nippon Telegr & Teleph Corp <Ntt> 広帯域伝送線路アンテナ
DE19512003A1 (de) * 1994-04-01 1995-10-05 France Telecom Antenne für die Ausstrahlung und/oder den Empfang elektromagnetischer Signale, insbesondere Ultrahochfrequenzen, und Vorrichtung, welche eine derartige Antenne verwendet

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Publication number Priority date Publication date Assignee Title
US4162499A (en) * 1977-10-26 1979-07-24 The United States Of America As Represented By The Secretary Of The Army Flush-mounted piggyback microstrip antenna
JPS6058704A (ja) * 1983-09-09 1985-04-04 Nippon Telegr & Teleph Corp <Ntt> 複共振形逆ｆアンテナ
FR2552938A1 (fr) * 1983-10-04 1985-04-05 Dassault Electronique Dispositif rayonnant a structure microruban perfectionnee et application a une antenne adaptative
JPS6141205A (ja) * 1984-08-01 1986-02-27 Nippon Telegr & Teleph Corp <Ntt> 広帯域伝送線路アンテナ
DE19512003A1 (de) * 1994-04-01 1995-10-05 France Telecom Antenne für die Ausstrahlung und/oder den Empfang elektromagnetischer Signale, insbesondere Ultrahochfrequenzen, und Vorrichtung, welche eine derartige Antenne verwendet

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PATENT ABSTRACTS OF JAPAN vol. 9, no. 189 (E - 333) 6 August 1985 (1985-08-06) *

Also Published As

Publication number Publication date
US5986606A (en) 1999-11-16
FR2752646B1 (fr) 1998-11-13
EP0825673B1 (de) 2010-12-15
CN1180947A (zh) 1998-05-06
FR2752646A1 (fr) 1998-02-27
CA2213155A1 (en) 1998-02-21
CN1174522C (zh) 2004-11-03
DE69740078D1 (de) 2011-01-27

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