| 摘要 |
A voltage-controlled oscillator comprises a first oscillator and a second oscillator. The first oscillator may generate a plurality of intermediate clock signals at a plurality of first nodes, multiply connected to a plurality of first ring shape circuits, in response to a control voltage. The plurality of intermediate clock signals may have a different phase from each other and a same phase difference with each other. The second oscillator may generate a plurality of output clock signals at a plurality of second nodes, multiply connected to a plurality of second ring shape circuits, by changing a voltage level of the intermediate clock signals. The plurality of second ring shape circuits may pass the plurality of first nodes. |
