A study of log periodic feeds multiple-beam antenna: Offset parabolic reflector antenna

被引：2
|
作者：
Shi, Lei [1 ]
Sun, Houjun [1 ]
Lu, Xin [1 ]
机构：
[1] Beijing Inst Technol, Dept EE, Beijing 100081, Peoples R China
来源：
2008 GLOBAL SYMPOSIUM ON MILLIMETER WAVES | 2008年
关键词：
D O I：
10.1109/GSMM.2008.4534629
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
The application of an array of circular polarized log periodic dipole antennas (LPDA) as feed array for a multiple-beam antenna to cover 3.5:1 bandwidths is described. Meanwhile, the use of an array of log-periodic antennas for two kinds of arrangement: rectangular grid and hexagonal grid illumination is also presented. In comparison with the rectangular grid, hexagonal grid is more efficient in beam coverage area for synchronous-orbiting communications satellites. Enhanced feed concept is used in the LPDA feed array in order to increase gain in coverage area. Finally, the simulated results for beam contour which is excite by right-hand circular polarized LPDA of both grids and enhanced beam contour over the frequency range of 0.8GH to 2.5GHz are demonstrated.
引用
收藏
页码：303 / 305
页数：3
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