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An LC VCO whose design includes deliberate circuit mismatches is presented. It is shown that such mismatches can reduce the oscillation start-up time due to a common-mode disturbance simultaneous with the turn-on of the tail current. The use of this technique is applied to a low-power transmitter for an ultra-wideband wireless communication system using the on–off keying modulation scheme. Measurements...
The effect of deliberate circuit mismatches in an LC VCO is investigated and it is shown that such mismatches can significantly reduce the oscillation start-up time. An analysis is presented that shows that the presence of mismatches results in a common-mode disturbance simultaneous with the turn-on of the tail current. The use of this technique is applied to a low-power transmitter for an ultra-wideband...
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