Title :
Gravity Deformation and Gain Loss of 12m Reflector Antenna
Author :
Wang, Wei ; Duan, Baoyan
Author_Institution :
Xidian Univ., Xian
Abstract :
Based on the structural analysis, a gravity deformation model is derived by superposition that described the main reflector distortions over the entire range of elevation angles. The aperture efficiency and gain loss is calculated using Ruze formula. To simulate the gravity deformation, a finite element model of antenna structure is created and input to the ANSYS program. The displacements of the surface panel mounting points are best fitted with a paraboloid. Some comparisons using the results from both methods are presented together with the explanations of the precision of the superposition method.
Keywords :
deformation; finite element analysis; reflector antennas; structural engineering; Ruze formula; antenna structure; finite element model; gravity deformation model; reflector antenna; reflector distortions; size 12 m; structural analysis; Apertures; Deformable models; Finite element methods; Gravity; Loaded antennas; Microwave antennas; Microwave imaging; Radio astronomy; Reflector antennas; Shape; Gain loss; Gravity deformation; Reflector antenna; Superposition method;
Conference_Titel :
Mechatronics and Automation, 2007. ICMA 2007. International Conference on
Conference_Location :
Harbin
Print_ISBN :
978-1-4244-0828-3
Electronic_ISBN :
978-1-4244-0828-3
DOI :
10.1109/ICMA.2007.4303670
