VOLTAGE CONTROLLED OSCILLATOR USING TUNABLE ACTIVE INDUCTOR

摘要

It is arranged to carry out none blocking capacitor of an oscillator using a voltage controlled oscillator of a turntable active inductor, the DC voltage for being connected to active inductor is reduced by using a p- tail current source. A voltage controlled oscillator using a turntable active inductor includes a pair of of CMOS transistor (M1, M2) and active inversion (L1, L2). In CMOS transistor, one of a CMOS transistor is connected to a sewer of other CMOS transistors and is connected to a p- tail current source (IL). The source of CMOS transistor is connected to ground connection by one second cone. Active inversion is connected to a sewer of each CMOS transistor. Active inversion includes the first CMOS transistor, the second CMOS transistor and a LC accumulators. In the first CMOS transistor, one for the first time current source be connected between a sewer and one. In the second CMOS transistor, a sewer is connected to the door of the first CMOS transistor. LC accumulators are connected between a source of the first CMOS transistor and one of the second CMOS transistor.