Patent ID: 6653980
Filing Date: 2003-11-25
Classification: H01Q

Abstract:
Antenna for the transmission/reception of radio frequency waves comprising:a structural element (8) that is conducting in the operating frequency band of the antenna, with size equal to at least one quarter of the wave length along the polarization direction of the electromagnetic wave for the minimum frequency of this frequency band, and comprising a cutout forming a cavity (9), a removable exciting element (10) placed in this cavity that acts as an exciter of this cavity (9), a metallization that is electrically conducting at the operating frequency of the antenna, providing metallization between the said exciting element (10) and the said structural element (8), and in that this exciting element (10) comprises:an element (11) made of a material transparent to radio frequency waves filled with a material that is also transparent to radio frequency waves, a conducting strip (12) forming a stub, used for tuning and matching the antenna on the operating frequency band, a cover (13) made of a material transparent to radio frequency waves, containing the exciting element (10) and maintaining continuity of the profile of the structural element (8), a stub power supply line (14).