Global Patent Index - EP 1319229 A1

EP 1319229 A1 20030618 - VARIABLE-PITCH HELICAL ANTENNA, AND CORRESPONDING METHOD

Title (en)

VARIABLE-PITCH HELICAL ANTENNA, AND CORRESPONDING METHOD

Title (de)

HELIXANTENNE MIT VERSCHIEDENEN PITCHLÄNGEN, UND ZUGEHÖRIGES HERSTELLUNGSVERFAHREN

Title (fr)

ANTENNE HELICO DALE A PAS VARIABLE, ET PROCEDE CORRESPONDANT

Publication

EP 1319229 A1 20030618 (FR)

Application

EP 01969903 A 20010914

Priority

  • FR 0102873 W 20010914
  • FR 0011830 A 20000915

Abstract (en)

[origin: WO0223673A1] The invention concerns a helical antenna, comprising at least a helix consisting of at least two radiating strands, at least one of said strands consisting of at least two segments, the winding angles of at least two of said segments being different and randomly or pseudo-randomly determined with global optimising means.

IPC 1-7

G11B 20/14

IPC 8 full level

H01Q 21/24 (2006.01); H01Q 1/38 (2006.01); H01Q 11/08 (2006.01)

CPC (source: EP US)

H01Q 11/08 (2013.01 - EP US)

Citation (search report)

See references of WO 0223673A1

Citation (examination)

  • MORISHITA H; TAKAHASHI S; KAMEI T: "Conical beam control of quadrifilar helical antennas", IEE ELECTRONIC LETTERS, vol. 34, no. 20, 1 October 1998 (1998-10-01), Stevenage, GB, pages 1899 - 1901, XP006010409
  • MIMAKI H; NAKANO H: "Double pitch helical antenna", IEEE ANTENNAS AND PROPAGATION SOCIETY INTERNATIONAL SYMPOSIUM, 21 June 1998 (1998-06-21), Atlanta, USA, pages 2320 - 2323, XP010292129
  • EGOROV I; ZHINONG YING: "A non-uniform helical antenna for dual band cellular phones", IEEE ANTENNAS AND PROPAGATION SOCIETY INTERNATIONAL SYMPOSIUM, vol. 2, 16 July 2000 (2000-07-16), Piscataway, USA, pages 652 - 655, XP010514625
  • LOUVIGNÉ J C; SHARAIHA A: "Broadband tapered printed quadrifilar helical antenna", IEE ELECTRONICS LETTERS, vol. 37, no. 15, 19 July 2001 (2001-07-19), STEVENAGE, GB, pages 932 - 933, XP006016948

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

DOCDB simple family (publication)

WO 0223673 A1 20020321; AU 9003201 A 20020326; EP 1319229 A1 20030618; FR 2814285 A1 20020322; JP 2004509536 A 20040325; US 2003184496 A1 20031002; US 6836257 B2 20041228

DOCDB simple family (application)

FR 0102873 W 20010914; AU 9003201 A 20010914; EP 01969903 A 20010914; FR 0011830 A 20000915; JP 2002527611 A 20010914; US 36351803 A 20030303