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    题名: Voltage controlled oscillator with anti supply voltage variation and/or process variation
    作者: Juang, Kai-Cheung;Shih, Horng-yuan;Su, Peng-un
    贡献者: 淡江大學電機工程學系
    日期: 2008-11-11
    上传时间: 2012-03-17 09:48:37 (UTC+8)
    摘要: A voltage controlled oscillator with anti supply voltage variation and/or process variation includes an oscillation circuit for outputting an oscillatory signal; a current source coupled to the oscillation circuit for providing an input current to the oscillation circuit; and a variation compensation circuit for compensating the variations generated by the supply voltage and process. The variation compensation circuit includes a peak detector for generating a peak voltage proportional to the amplitude of the oscillatory signal; a compensating voltage generator for generating a reference voltage according to the process variation so that the oscillation circuit achieves the same working conditions under the process variation; and a comparator for comparing the peak voltage and the reference voltage to generate a control voltage. When the variation compensation circuit includes an amplifier, the supply voltage can be compensated.
    显示于类别:[電機工程學系暨研究所] 專利

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