A New CMOS Current Controlled Oscillator with Minimum Phase Noise Based on a Low Parasitic Resistance CCII

In this paper, the authors present a design of a minimum phase noise current controlled oscillator in CMOS technology. Owing to their high degree of controllability, the second generation current conveyer is used as a basic block for their oscillator. Thus, the first step in their design was to improve static and dynamic behavior of second generation current conveyers. They present therefore a design of CMOS class AB second generation current conveyors. The trans-linear implementation in CMOS technology was first studied and then a considerable improvement of the parasitic series resistance on port X is done by presenting a structure of CCII.

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