Multi-phase voltage control oscillator
A voltage-controlled oscillation and multi-phase technology, applied to power oscillators, electrical components, etc., can solve problems such as uniformity influence and difficulty
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[0027] Please refer now figure 2 , which is a schematic circuit diagram of a multi-phase voltage controlled oscillator 200 according to an embodiment of the present invention. In this embodiment, the multi-phase VCO 200 can provide 32 oscillation signals with the same oscillation frequency but different phases, and the oscillation frequency of each oscillation signal can be changed by adjusting a control voltage Vc.
[0028] In this embodiment, the multi-phase VCO 200 includes four ring oscillator units 202 and a phase clamping unit 204 . Each ring oscillator unit 202 also has four differential delay elements 206, and each differential delay element 206 has two input ends 206a, 206b and two output ends 206c, 206d, wherein each differential delay element 206 has a The signal delay time is such that there is a delay between the signal on each input port 206a, 206b and the signal on each output port 206c, 206d. In addition, the signal phase difference between the input termina...
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