The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 04, 2010
Filed:
May. 14, 2008
Ola Forslund, Linköping, SE;
Ola Forslund, Linköping, SE;
SAAB AB, Linköping, SE;
Abstract
An antenna device including a reflectarray with array antenna elements, and an outer feed provided with a waveguide and a widening funnel which in a widened end carries a waveguide aperture for illumination of the reflectarray. The antenna device eliminates or at least reduces a position dependence of an antenna lobe with respect to frequency. Furthermore, the antenna device presents a low monostatic radar cross section and compactness. To this end the antenna device is fed offset and is provided with a device for movement of a phase center of the antenna with a frequency relative to the waveguide aperture of the feed in the vicinity of the waveguide aperture.