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Frequency synthesis is one of the most important and most actively researched subjects in the field of VLSI mixed-signal circuit design. Among the existing techniques in this area, Fractional-N architecture is a widely used one for generating frequencies which are not integer multiple of the input reference frequency. Flying-Adder architecture is an emerging technique which is based on a new concept,...
A Digital-to-frequency converter (DFC) based on the concept of time-average frequency and a flying-adder frequency synthesizer is a novel circuit component that enables many system-level innovations. The clock output of the DFC has unique characteristics in both time and frequency domains. In this paper, a study on the energy distribution of the DFC output for a special case is presented. Mathematical...
The flying adder (FA) architecture is one of the latest developments in the area of on-chip frequency synthesis. It has two operating modes: integer-FA mode and fractional FA mode. In the fractional FA mode, a concept of time-average-frequency is used to synthesize certain frequencies that cannot be easily obtained using traditional methods. The issue of using time-average-frequency to drive digital...
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