大孔径全可动射电望远镜换馈系统设计
杨凤辉,汪敏,董亮,施硕彪
Design of feed switching system for large aperture fully movable radio telescope
Fenghui YANG,Min WANG,Liang DONG,Shuobiao SHI
表2
天线辐射特性仿真结果
Table 2
Simulation results of antenna radiation characteristics
频段 频率/GHz
第1副瓣电平/dB
天线
增益/dB
天线
效率
S
2.2
-19.4
57.61
0.68
2.3
-20.4
58.01
0.69
X
7.6
-21.3
68.52
0.69
8.3
-26.3
69.39
0.72
9.0
-24.1
70.44
0.77
C
4.5
-28.2
63.80
0.67
5.7
-28.6
65.84
0.67
6.9
-26.7
67.61
0.69
Ku
12.0
-27.45
72.74
0.75
14.1
-28.14
74.18
0.75
15.5
-28.61
75.13
0.77