WO2008020382A3 - Antenna system - Google Patents

Antenna system Download PDF

Info

Publication number
WO2008020382A3
WO2008020382A3 PCT/IB2007/053188 IB2007053188W WO2008020382A3 WO 2008020382 A3 WO2008020382 A3 WO 2008020382A3 IB 2007053188 W IB2007053188 W IB 2007053188W WO 2008020382 A3 WO2008020382 A3 WO 2008020382A3
Authority
WO
WIPO (PCT)
Prior art keywords
antenna
frequency band
antenna system
feeding circuit
resonant frequency
Prior art date
Application number
PCT/IB2007/053188
Other languages
French (fr)
Other versions
WO2008020382A2 (en
Inventor
Anthony Kerselaers
Original Assignee
Nxp Bv
Anthony Kerselaers
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 Nxp Bv, Anthony Kerselaers filed Critical Nxp Bv
Publication of WO2008020382A2 publication Critical patent/WO2008020382A2/en
Publication of WO2008020382A3 publication Critical patent/WO2008020382A3/en

Links

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
    • 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
    • H01Q5/30—Arrangements for providing operation on different wavebands
    • H01Q5/307—Individual or coupled radiating elements, each element being fed in an unspecified way
    • H01Q5/314—Individual or coupled radiating elements, each element being fed in an unspecified way using frequency dependent circuits or components, e.g. trap circuits or capacitors
    • H01Q5/335—Individual 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q7/00—Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop

Landscapes

  • Transmitters (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)

Abstract

The present invention discloses an antenna system for transmitting a RF signal comprising an antenna feeding circuit (10) and a small antenna (20) coupled to the feeding circuit (10). The system has a first resonant frequency inside a first frequency band and at least a second resonant frequency outside said frequency band for the small antenna having a substantial same power radiated in said first frequency band.
PCT/IB2007/053188 2006-08-14 2007-08-10 Antenna system WO2008020382A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP06118848 2006-08-14
EP06118848.8 2006-08-14

Publications (2)

Publication Number Publication Date
WO2008020382A2 WO2008020382A2 (en) 2008-02-21
WO2008020382A3 true WO2008020382A3 (en) 2008-04-24

Family

ID=38963152

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2007/053188 WO2008020382A2 (en) 2006-08-14 2007-08-10 Antenna system

Country Status (1)

Country Link
WO (1) WO2008020382A2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3120413B1 (en) * 2014-03-21 2020-09-30 Wispry, Inc. Tunable antenna systems, devices, and methods

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0795922A1 (en) * 1996-03-11 1997-09-17 Murata Manufacturing Co., Ltd. Matching circuit and antenna apparatus
US20020175878A1 (en) * 2001-04-11 2002-11-28 Toncich Stanley S. Tunable matching circuit
US20070013606A1 (en) * 2005-07-13 2007-01-18 Jabil Circuit Taiwan Limited Coaxial cable free quadri-filar helical antenna structure

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0795922A1 (en) * 1996-03-11 1997-09-17 Murata Manufacturing Co., Ltd. Matching circuit and antenna apparatus
US20020175878A1 (en) * 2001-04-11 2002-11-28 Toncich Stanley S. Tunable matching circuit
US20070013606A1 (en) * 2005-07-13 2007-01-18 Jabil Circuit Taiwan Limited Coaxial cable free quadri-filar helical antenna structure

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
BREED G A: "NOTES ON ELECTRICALLEY SMALL ANTENNAS", RF DESIGN, PRIMEDIA BUSINESS MAGAZINES & MEDIA, OVERLAND PARK, KS, US, vol. 19, no. 3, 1 March 1996 (1996-03-01), pages 64,66, XP000557681, ISSN: 0163-321X *
GREBENNIKOV A V: "A SIMPLIFIED CAD APPROACH TO ANALYZING LUMPED ELEMENTS", RF DESIGN, PRIMEDIA BUSINESS MAGAZINES & MEDIA, OVERLAND PARK, KS, US, vol. 23, no. 6, June 2000 (2000-06-01), pages 22,24,26,28,30,34,36,38, XP000959061, ISSN: 0163-321X *
VON W KRAUTKRAMER AND A RICHTSCHEID: "RESONANZTRANSFORMATOREN MIT DREI REAKTANZEN ALS TRANSFORMIERENDE FILTER", BULLETIN DES SCHWEIZERISCHEN ELEKTROTECHNISCHEN VEREINS, SCHWEIZERISCHER ELEKTROTECHNISCHER VEREIN, ZURICH, CH, vol. 64, no. 23, 10 November 1973 (1973-11-10), pages 1500 - 1509, XP002184530 *

Also Published As

Publication number Publication date
WO2008020382A2 (en) 2008-02-21

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