Saeed Abolhassani

An Inductor‐Less Quadrature Digitally Controlled Oscillator (QDCO) Based on Active Transformer Coupling in Standard CMOS Technology

ABSTRACT A wide tuning range 6‐bit digitally programmable quadrature DCO using two coupled active transformers is proposed. The proposed inductor‐less QDCO is constructed by two tail‐less cross‐coupled LC oscillators, loaded by two coupled active transformers, with antiphase coup...