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:
Jun. 17, 2008
Filed:
Apr. 29, 2005
Applicants:
Bernard Jecko, Rilhac Rancon, FR;
Laure Freytag, Lasserre, FR;
Elisa Pointereau, Limoges, FR;
Inventors:
Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01Q 1/42 (2006.01);
U.S. Cl.
CPC ...
Abstract
A antenna made from a photonic band-gap (PBG) material, includes: a lateral wall () which is made from a PBG material and which completely surrounds a central axis (), the wall being disposed at a distance from the central axis such as to form a central resonant cavity; and at least one radiating element () which is placed inside the cavity. Each radiating element is positioned inside the cavity in order to excite an electromagnetic field parallel to the central axis and the radiating element(s) can excite the modes of the central cavity having a radial resonance more strongly than the other modes of the cavity.