专利名称：Method and Apparatus for Frequency
Synthesizing
发明人：Sun Bo,Jifeng Geng申请号：US12961779申请日：20101207
公开号：US20120139592A1公开日：20120607
专利附图：
摘要：Systems and methods for frequency synthesis are disclosed. Exemplary
embodiments of the digital frequency synthesizer can produce a fixed frequency and/or amodulated signal. An exemplary digital frequency synthesizer includes series-coupled
delay cells, a linear feedback shift register, and an accumulator. The series-coupled delaycells generate, from an input clock signal, multiple clock edges corresponding tofractional clock periods. A linear feedback shift register selects clock edges to pass to acombinational logic circuit, based on a sign/enable control signal received from anaccumulator and a clock signal received from the combinational logic circuit's output. Theaccumulator receives a control signal and controls the phase of the synthesizer outputbased upon the received control signal.
申请人：Sun Bo,Jifeng Geng
地址：San Diego CA US,San Diego CA US
国籍：US,US
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