Patent ID: 6653982
Filing Date: 2003-11-25
Classification: H01Q

Abstract:
An antenna for mobile satellite communication disposed on a substantially horizontally oriented conductive base surface (1) with substantially linear conductor parts (4) having at least one antenna connection point (5) comprising:a high frequency conducting ring structure (2) formed from the conductor parts (4) having a substantial vertical extension (4a) and a substantial horizontal extension (4b) together with the conductive base surface (1), wherein the conductor parts having substantial vertical extension (4a) and horizontal extension (4b) are connected in series and are disposed substantially in a plane (0) standing perpendicular to the conductive base surface (1), and wherein one of the conductor parts having either a substantial vertical extension (4a) or a horizontal extension (4b) is interrupted to form a first antenna connection point (5); and, at least one impedance (7) coupled to an impedance connection point (6) disposed on a further interruption of said conductor parts (4a), (4b), wherein the positions of said impedance connection point (6), the antenna connection point (5), and said impedance (7) are selected so that, for the plane (0) standing perpendicular to the conductive base surface (1), with waves polarized in this plane, the predetermined antenna gain values are optimized for a predetermined elevation angle (81) of the incident satellite wave (80).