发明名称 |
Ring oscillator for calibrating phase error and phase-error calibration method therefor |
摘要 |
A ring oscillator and a phase error calibration method are provided. The ring oscillator may include a first voltage-current converter for controlling and outputting an amount of tail current Itail according to a magnitude of a first control voltage applied in feedback in a PLL circuit; a second voltage-current converter for controlling and outputting an amount of shift current according to a magnitude of a second control voltage applied from a system phase error detector; and differential amplifiers for controlling, for output signals, a delay time of signals based on the applied tail current amount and a shift time of the signals based on the shift current amount. Thus, a phase relation between in-phase and quadrature-phase signals outputted from the ring oscillator may be controlled.
|
申请公布号 |
US2006181357(A1) |
申请公布日期 |
2006.08.17 |
申请号 |
US20060342611 |
申请日期 |
2006.01.31 |
申请人 |
SAMSUNG ELECTRONICS CO., LTD. |
发明人 |
CHAE HYUN-SU;KIM HOON-TAE;LEE JUNG-EUN |
分类号 |
H03K3/03 |
主分类号 |
H03K3/03 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|