| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 10700971 | Chinese Astronomy and Astrophysics | 2005 | 10 Pages |
Abstract
The proposed new feed is a dense focal-plane array of microstrip antenna elements, the so called Vivaldi antennas. The electro-magnetic properties of the Vivaldi element and Vivaldi array are briefly introduced, which are essential for this application. The focal-field distributions (FFD) of FAST are simulated by using the software package GRASP8 for different illuminations. The simulation results give important information for the layout design of the array, especially for the weighting system of the Vivaldi array. A preliminary configuration of the array structure is suggested, and the illumination patterns are estimated. Finally, some remarks on the feasibility of applying the Vivaldi array to FAST are made.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Astronomy and Astrophysics
Authors
Gan Heng-qian, Jin Cheng-jin, Zhang Hai-yang, Su Yan,