Title :
Microstrip reflectarray antennas for use in satellite communications
Author :
Oraizi, H. ; Keyghobad, K.
Author_Institution :
Iran Univ. of Sci. & Technol., Tehran, Iran
Abstract :
The reflectarray antenna is an n×n microstrip patch element planar array, which reflects the incident fields radiating from a feed antenna. Each patch element introduces a phase change to the scattered fields. In this paper, at first it is determined the phases, which should be created by patches for radiation in a desired direction. These phases are implemented by varying both the size of patches and the length of attached stubs. Finally, the shapes of open-ended microstrip stubs are optimized to improve the bandwidth characteristics of antenna.
Keywords :
antenna feeds; antenna radiation patterns; directive antennas; microstrip antenna arrays; planar antenna arrays; reflector antennas; satellite communication; 3 GHz; antenna radiation; bandwidth characteristics; directive antenna; feed antenna; microstrip patch element planar array; microstrip reflectarray antennas; moment method solution; open-ended microstrip stubs; optimum transmission line; patch element; phase change; satellite communications; scattered fields; spectral domain electric field integral equation;
Conference_Titel :
Antennas and Propagation, 2003. (ICAP 2003). Twelfth International Conference on (Conf. Publ. No. 491)
Print_ISBN :
0-85296-752-7
DOI :
10.1049/cp:20030084
