%0 Journal Article
%T Amplitude and Phase Errors Calibration of the Satellite-Borne DBF Transmitting RF Channel<br>星载DBF Tx射频通道幅相误差校正
%A Zhao Hong-mei Wang Hua-li Mu Shan-xiang Zhang Zhong-chuan Li Cheng-guo
%A <br>赵红梅
%A 王华力
%A 牟善祥
%A 张忠传
%A 李成国
%J 电子与信息学报
%D 2008
%I 
%X In order to realize the precise multi-beam forming, a calibration method of the amplitude and phase error among RF channels for the transmitting multi-beam array antenna system onboard satellite is proposed. This method is conducted by receiving the sum of the output signal of all RF transmitting channels, including the temporally multiplexed orthogonal codes injected from the base-band, the calibration factors for all the RF transmitting channels can be simultaneously obtained by temporal correlation of the orthogonal codes and the IDFT parallel processing technology. The calibration factors are normalized for avoiding the effects on the nonlinearity components. Computer simulation shows that the beam pattern after calibration is very close to the ideal beam pattern.
%K Satellite communications
%K Digital beamforming
%K Orthogonal codes
%K Parallel processing
%K Amplitude and phase errors calibration<br>卫星通信
%K 数字波束形成
%K 正交码
%K 并行处理
%K 幅相误差校正
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=1319827C0C74AAE8D654BEA21B7F54D3&jid=EFC0377B03BD8D0EF4BBB548AC5F739A&aid=AEF569A0951B490DFDD86A15B6FC7292&yid=67289AFF6305E306&vid=340AC2BF8E7AB4FD&iid=9CF7A0430CBB2DFD&sid=CB3D341D9E11A799&eid=2388B0C36A6A2DBD&journal_id=1009-5896&journal_name=电子与信息学报&referenced_num=0&reference_num=6