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公开(公告)号：US11196428B1
公开(公告)日：2021-12-07
申请号：US17076200
申请日：2020-10-21
发明人： Yoni Yosef-Hay , Ulrik Wismar
摘要： A Quadrature Voltage Controlled Oscillator (Quad VCO) based on standard digital cells and delay cells, is adapted to generate two high-frequency output signals that are “in quadrature”, so they both oscillate with similar frequency while exhibiting a mutual phase offset of about 90 degrees, and a) the digital cells include a mix of digital circuits used for implementing standard flip-flop circuits and standard logic gates; and b) the delay cells include circuits accepting a logic signal at their input and outputting a time-delayed version of said input signal, with a time delay that may be varied by a control voltage analog signal that determines the cell delay.
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