(19)
(11) EP 1 137 102 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
07.01.2004 Bulletin 2004/02

(43) Date of publication A2:
26.09.2001 Bulletin 2001/39

(21) Application number: 01106761.8

(22) Date of filing: 17.03.2001
(51) International Patent Classification (IPC)7: H01Q 15/00, H01Q 19/195
(84) Designated Contracting States:
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
Designated Extension States:
AL LT LV MK RO SI

(30) Priority: 20.03.2000 US 528605

(71) Applicant: THE BOEING COMPANY
Seattle, Washington 98124-2207 (US)

(72) Inventors:
  • Ramanujam, Parthasarathy
    Redondo Beach, California 90278 (US)
  • Goyette, Guy
    Marina Del Rey, California 90292 (US)
  • Moncada, John J,
    Gardena, California 90247 (US)

(74) Representative: Steil, Christian, Dipl.-Ing. et al
Witte, Weller & Partner, Postfach 10 54 62
70047 Stuttgart
70047 Stuttgart (DE)

   


(54) Frequency variable aperture reflector


(57) A frequency variable aperture reflector (18) for working in a first and second frequency band, wherein the first frequency band is higher than the second frequency, includes a radiating element having an active surface (20) and a frequency selective surface (22). The active surface (20) is a contiguous surface capable of reflecting both the first and second frequency bands. The frequency selective surface (22) surrounds the active surface (20) and only reflects the second frequency band (Fig. 2).






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