教師資料查詢 | 類別: 專利 | 教師: 施鴻源 Shih, Horng-yuan (瀏覽個人網頁)

標題:Voltage controlled oscillator with anti supply voltage variation and/or process variation
學年97
學期1
專利開始日期2008/11/11
作品名稱Voltage controlled oscillator with anti supply voltage variation and/or process variation
作品名稱(其他語言)
著者Juang, Kai-Cheung; Shih, Horng-yuan; Su, Peng-un
單位淡江大學電機工程學系
著錄名稱、卷期、頁數
描述專利國別美國;United States Patent: 7,449,972;Application number: 11/183,901;國際分類號H03L 5/00
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.
關鍵字
語言英文(美國)
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