Title :
An Active Reflectarray with Beamsteering Capabilities
Author :
Cabria, L. ; Garcia, J.A. ; Tazon, A. ; Vassal´lo, J.
Author_Institution :
Dpto. Ing. Comunicaciones, Cantabria Univ., Santander
Abstract :
This paper presents an active reflectarray with the capability of steering the main beam and achieving different amplitude distributions. The amplitude and phase of the scattered field from each reflectarray element is controlled by the use of an IQ modulator. An aperture coupled patch with perpendicular microstrip feeds is employed as radiating element. One of its ports is employed to receive the signal and the other to retransmit it with the phase and gain selected in the amplitude/phase control unit
Keywords :
active antenna arrays; antenna feeds; antenna radiation patterns; beam steering; electromagnetic wave scattering; microstrip antenna arrays; IQ modulator; active reflectarray; amplitude control unit; amplitude distributions; aperture coupled patch; beamsteering capabilities; perpendicular microstrip feeds; phase control unit; radiating element; scattered field; Apertures; Circuits; Feeds; Microstrip antenna arrays; Microstrip antennas; Patch antennas; Phase control; Phased arrays; Scattering; Voltage;
Conference_Titel :
Applied Electromagnetics and Communications, 2005. ICECom 2005. 18th International Conference on
Conference_Location :
Dubrovnik
Print_ISBN :
953-6037-44-0
DOI :
10.1109/ICECOM.2005.204996
