Reflecting antenna with variable coverage and operating frequencies and satellite comprising such antenna

摘要

Reflecting antenna with coverage and frequency flexibility comprising a deployable reflector (10) according to a deployment and returnable axis having two different reflecting surfaces (R1, R2) geometrically formed so as to cover, respectively, first and second zones different geographical and predetermined forms, the two reflecting surfaces (R1, R2) being fixed back to back on a common support (15), and the antenna also comprising at least two independent sources (S1, S2) arranged in a configuration fixed and connected to different radiofrequency supply chains (2, 3) that define different and predefined operating frequency planes (F1, F2), the reflector (10) comprising a first deployment position according to which the focal point is placed of the first reflective surface (R1) at the phase center (5) of the first source (S1) and a second deployment position according to which the focal point of the second reflecting surface (R2) is placed in the phase center (6) of the second source (S2), the reflector passing from one position to another thanks to a rotation about an axis (22) parallel to the plane of the support (15) and perpendicular to the axis of deployment of the reflector.