WO2009019183A3 - Antenna diagram switching for improving the properties of a radio link - Google Patents

Antenna diagram switching for improving the properties of a radio link Download PDF

Info

Publication number
WO2009019183A3
WO2009019183A3 PCT/EP2008/060014 EP2008060014W WO2009019183A3 WO 2009019183 A3 WO2009019183 A3 WO 2009019183A3 EP 2008060014 W EP2008060014 W EP 2008060014W WO 2009019183 A3 WO2009019183 A3 WO 2009019183A3
Authority
WO
WIPO (PCT)
Prior art keywords
antenna
switching element
improving
properties
radio link
Prior art date
Application number
PCT/EP2008/060014
Other languages
German (de)
French (fr)
Other versions
WO2009019183A2 (en
Inventor
Guy-Aymar Chakam
Martin Weinberger
Andreas Schaefer
Original Assignee
Continental Automotive Gmbh
Guy-Aymar Chakam
Martin Weinberger
Andreas Schaefer
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 Continental Automotive Gmbh, Guy-Aymar Chakam, Martin Weinberger, Andreas Schaefer filed Critical Continental Automotive Gmbh
Publication of WO2009019183A2 publication Critical patent/WO2009019183A2/en
Publication of WO2009019183A3 publication Critical patent/WO2009019183A3/en

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/27—Adaptation for use in or on movable bodies
    • H01Q1/32—Adaptation for use in or on road or rail vehicles
    • H01Q1/3208—Adaptation for use in or on road or rail vehicles characterised by the application wherein the antenna is used
    • H01Q1/3233—Adaptation for use in or on road or rail vehicles characterised by the application wherein the antenna is used particular used as part of a sensor or in a security system, e.g. for automotive radar, navigation systems
    • H01Q1/3241—Adaptation for use in or on road or rail vehicles characterised by the application wherein the antenna is used particular used as part of a sensor or in a security system, e.g. for automotive radar, navigation systems particular used in keyless entry systems
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
    • 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
    • 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
    • H01Q9/16—Resonant antennas with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole
    • 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
    • H01Q9/30—Resonant antennas with feed to end of elongated active element, e.g. unipole
    • H01Q9/42—Resonant antennas with feed to end of elongated active element, e.g. unipole with folded element, the folded parts being spaced apart a small fraction of the operating wavelength

Abstract

The invention relates to an antenna array comprising an antenna (1) and a switching element (2), one terminal (2a) of which is electrically connected to a first coupling point (7) on the antenna (1) and the other terminal (2b) of which is electrically connected to a first impedance (3). The position of the first coupling point (7) on the antenna (1) as well as the type and magnitude of the first impedance (3) are selected such that the directivity of the antenna array (10) in a first switched state of the switching element (2) is rotated by an angle of more than zero degrees relative to the directivity of the antenna array (10) in a second switched state of the switching element (2), and/or the polarization characteristics (21) of the antenna array (10, 30, 40) in a first switched state of the switching element (2, 38a) are rotated by an angle of more than zero degrees relative to the polarization characteristics of the antenna array (10, 30, 40) in a second switched state of the switching element (2, 38a).
PCT/EP2008/060014 2007-08-09 2008-07-30 Antenna diagram switching for improving the properties of a radio link WO2009019183A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200710037615 DE102007037615A1 (en) 2007-08-09 2007-08-09 Antenna diagram switching to improve the radio connection properties
DE102007037615.6 2007-08-09

Publications (2)

Publication Number Publication Date
WO2009019183A2 WO2009019183A2 (en) 2009-02-12
WO2009019183A3 true WO2009019183A3 (en) 2009-04-09

Family

ID=39929637

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2008/060014 WO2009019183A2 (en) 2007-08-09 2008-07-30 Antenna diagram switching for improving the properties of a radio link

Country Status (2)

Country Link
DE (1) DE102007037615A1 (en)
WO (1) WO2009019183A2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3043965B1 (en) * 2015-11-25 2019-03-22 Continental Automotive France METHOD AND COMMUNICATION DEVICE FOR REMOTELY ACTIVATING A FUNCTION OF A MOTOR VEHICLE

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10012438A1 (en) * 2000-03-15 2001-09-27 Daimler Chrysler Ag Key arrangement for remote radio control of a vehicle function, has antenna of different polarization compared with frame antenna included in key body and connected to frame antenna and electronic circuit
US20050119035A1 (en) * 2002-09-26 2005-06-02 Kentaro Miyano Radio terminal device antenna and radio terminal device
US20050239519A1 (en) * 2003-06-26 2005-10-27 Matsushita Electric Industrial Co., Ltd. Portable wireless machine
WO2006027952A1 (en) * 2004-09-10 2006-03-16 Matsushita Electric Industrial Co., Ltd. Antenna device and mobile wireless apparatus using the same
WO2006064590A1 (en) * 2004-12-16 2006-06-22 Matsushita Electric Industrial Co., Ltd. Polarized wave switching antenna

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10012438A1 (en) * 2000-03-15 2001-09-27 Daimler Chrysler Ag Key arrangement for remote radio control of a vehicle function, has antenna of different polarization compared with frame antenna included in key body and connected to frame antenna and electronic circuit
US20050119035A1 (en) * 2002-09-26 2005-06-02 Kentaro Miyano Radio terminal device antenna and radio terminal device
US20050239519A1 (en) * 2003-06-26 2005-10-27 Matsushita Electric Industrial Co., Ltd. Portable wireless machine
WO2006027952A1 (en) * 2004-09-10 2006-03-16 Matsushita Electric Industrial Co., Ltd. Antenna device and mobile wireless apparatus using the same
WO2006064590A1 (en) * 2004-12-16 2006-06-22 Matsushita Electric Industrial Co., Ltd. Polarized wave switching antenna

Also Published As

Publication number Publication date
WO2009019183A2 (en) 2009-02-12
DE102007037615A1 (en) 2009-02-12

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