OSCILLATOR (QVCO) CONTROLLED BY TRANSFORMER FEEDBACK ORTHOGONAL VOLTAGE FOR DYNAMIC PHASE ERROR CORRECTION AND COMMUNICATION APPARATUS USING THE SAME

摘要

To provide an oscillator (QVCO) controlled by transformer feedback orthogonal voltage.SOLUTION: An embodiment of the present disclosure provides an oscillator (QVCO) controlled by transformer feedback orthogonal voltage that includes a first VCO, a second VCO, and a dynamic phase error correction circuit which includes a plurality of coupling capacitors between the first and second VCOs and in which capacitance of the coupling capacitors changes according to a digital control signal that corrects a phase error of a quadrature phase output local oscillation (LO) signal by the first and second VCOs.SELECTED DRAWING: Figure 2