发明名称 |
Reconfigurable zonal beam forming system for an antenna on a satellite in orbit and method of optimizing reconfiguration |
摘要 |
A reconfigurable zonal beam forming system for an antenna on a satellite in orbit includes, in cascade, a signal splitter applying signals of equal amplitude to each channel, first variable phase-shifters and amplifiers and a Butler matrix the outputs of which are connected via second variable phase-shifters to the radiating source elements of the antenna. Varying the phase-shifts introduced by the first and second phase-shifters reconfigures the transmitted beam optimally. A preferred variant of the system further includes variable attenuators. A control device is used to apply optimization parameters. A method of optimizing the resulting configuration uses a gradient search algorithm.
|
申请公布号 |
US5929804(A) |
申请公布日期 |
1999.07.27 |
申请号 |
US19970881134 |
申请日期 |
1997.06.24 |
申请人 |
AGENCE SPATIALE EUROPEENE |
发明人 |
JONES, TREVOR HOWAR PRICE;FOLIO, BENEDICTE;YARWOOD, MICHAEL PHILIP;LAMBRECHT, XAVIER JEAN-FRANCOIS |
分类号 |
H01Q1/28;H01Q3/40;H04B7/185;H04B7/204;(IPC1-7):H04B7/185 |
主分类号 |
H01Q1/28 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|