EP 2230723 A1 20100922 - Coupled multiband antennas
Title (en)
Coupled multiband antennas
Title (de)
Gekoppelte Mehrbandantennen
Title (fr)
Antennes multibandes couplées
Publication
Application
Priority
- EP 02807795 A 20020910
- EP 10167660 A 20020910
Abstract (en)
The present invention consists of an antenna comprising at least two radiating structures, said radiating structures taking the form of two arms, said arms being made of or limited by a conductor, superconductor or semiconductor material, said two arms being coupled to each other through a region on first and second superconducting arms such that the combined structure of the coupled two-arms forms a small antenna with a broadband behavior, a multiband behavior or a combination of both effects. According to the present invention, the coupling between the two radiating arms is obtained by means of the shape and spatial arrangement of said two arms, in which at least one portion on each arm is placed in close proximity to each other (for instance, at a distance smaller than a tenth of the longest free-space operating wavelengths) to allow electromagnetic fields in one arm being transferred to the other through said specific close proximity regions Said proximity regions are located at a distance from the feeding port of the antenna (for instance a distance larger than 1/40 of the free-space longest operating wavelength) and specifically exclude said feeding port of the antenna.
IPC 8 full level
H01Q 9/30 (2006.01); H01Q 1/36 (2006.01); H01Q 1/38 (2006.01); H01Q 9/04 (2006.01); H01Q 9/42 (2006.01); H01Q 19/00 (2006.01)
CPC (source: EP)
H01Q 1/36 (2013.01); H01Q 1/38 (2013.01); H01Q 9/0421 (2013.01); H01Q 9/30 (2013.01); H01Q 9/42 (2013.01); H01Q 19/005 (2013.01)
Citation (applicant)
- WO 0122528 A1 20010329 - FRACTUS SA [ES], et al
- WO 0154225 A1 20010726 - FRACTUS SA [ES], et al
- ANGUERA; PUENTE; BORJA; ROMEU: "Miniature Wideband Stacked Microstrip Patch Antenna Based on the Sierpinski Fractal Geometry", IEEE ANTENNAS AND PROPAGATION SOCIETY INTERNATIONAL SYMPOSIUM, July 2000 (2000-07-01)
- NAKANO; IKEDA; SUZUKI; MIMAKI; YAMAUCHI: "Realization of Dual-Frequency and Wide-Band VSWR Performances Using Normal-Mode Helical and Inverted-F Antennas", IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, vol. 46, no. 6, June 1998 (1998-06-01)
- PUENTE; CLARET; SAGUES; ROMEU; L6PEZ; SALVANS: "Multiband Properties of a Fractal Tree Antenna Generated by Electrochemical Deposition", POUS. IEE ELECTRONICS LETTERS, vol. 32, no. 5, December 1996 (1996-12-01), pages 2298 - 2299
Citation (search report)
- [XYI] US 5966097 A 19991012 - FUKASAWA TORU [JP], et al
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- [Y] JP H06334421 A 19941202 - MITSUBISHI HEAVY IND LTD
- [XY] PATENT ABSTRACTS OF JAPAN vol. 005, no. 63 (E - 54) 28 April 1981 (1981-04-28)
- [XY] TAGUCHI Y ET AL: "AERONAUTICAL LOW-PROFILE YAGI-UDA ANTENNAS", ELECTRONICS & COMMUNICATIONS IN JAPAN, PART I - COMMUNICATIONS, WILEY, HOBOKEN, NJ, US LNKD- DOI:10.1002/(SICI)1520-6424(199812)81:12<28::AID-ECJA4>3.0.CO;2-L, vol. 81, no. 12, 1 December 1998 (1998-12-01), pages 28 - 36, XP000782780, ISSN: 8756-6621
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SK TR
DOCDB simple family (publication)
DOCDB simple family (application)
EP 10167660 A 20020910