Phase Error Calibration Technique for Rotary Traveling Wave Oscillators Koji Tak

Abstract

Phase error calibration technique that is suitable for an RTWO is presented. By introducing non-uniform capaci- tors in the distributed resonator , the phase relationships among multiphase outputs available from the RTWO are adjusted to com- pensate for physical asymmetries. To have a better understanding of the proposed method, we develop a model in which the RTWO is described as injection locked multiple SWOs. The proposed model reveals possible modes of oscillation, their stability, and provi