发明名称 |
Receiver for wireless communication systems and I/Q signal phase difference correction method therefor |
摘要 |
A receiver includes first switches for applying either differential signals of an oscillator or a data signal of a transmitter to down-converting mixers; a frequency conversion unit for mixing and applying to the down-converting mixers quadrature signals generated from an arbitrary clock signal generator and the oscillator, and having a PPF for changing a phase difference of I/Q signals according to a control voltage externally applied; a phase difference detection part for checking a phase difference between the I/Q signals and generating the control voltage to be applied to the PPF according to the phase difference so as to correct the phase difference; third switches for applying the data signal processed through the down-converting mixers, filters, and amplifiers to A/D converters and applying the I/Q signals having a predetermined frequency to the phase difference detection part; and a control unit for switching the first and third switches.
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申请公布号 |
US7450925(B2) |
申请公布日期 |
2008.11.11 |
申请号 |
US20060337573 |
申请日期 |
2006.01.24 |
申请人 |
SAMSUNG ELECTRONICS CO., LTD. |
发明人 |
CHAE HYUN-SU;KIM HOON-TAE;PARK EUN-CHUL |
分类号 |
H04B1/26 |
主分类号 |
H04B1/26 |
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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