发明名称 |
Phase calibration method and apparatus |
摘要 |
Disclosed is a phase calibration method for inserting a calibration signal (SC) into main signals (SM1 to SMn) of a plurality of branches in turn, estimating the phase characteristic of an analog circuit to which a respective one of the main signals is input and calibrating the phase of each main signal. The method includes steps of outputting a first combined signal obtained by combining output signals from the analog circuits (62a to 62n) in all branches, outputting a second combined signal obtained by combining the main signals in all branches, extracting the calibration signal by removing the second combined signal from the first combined signal in a calibration signal extracting unit (64), estimating the phase characteristics of the analog circuits, to which the main signals having the inserted calibration signal are input, based upon a change in phase of the calibration signal, and subjecting the main signals to phase adjustment having characteristics that are opposite the phase characteristics. |
申请公布号 |
EP1583174(A3) |
申请公布日期 |
2006.02.15 |
申请号 |
EP20040019714 |
申请日期 |
2004.08.19 |
申请人 |
FUJITSU LIMITED |
发明人 |
KUBO, TOKURO;NAGATANI, KAZUO;HAMADA, HAJIME;ISHIKAWA, HIROYOSHI;FUDABA, NOBUKAZU |
分类号 |
H01Q3/26;H04J1/00;G01S7/00;G01S7/40;H04B1/707;H04B7/08;H04B7/10;H04B17/00;H04L27/26 |
主分类号 |
H01Q3/26 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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