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採用快速傅利葉處理器之類比數位轉換器校正系統「FAST FOURIER TRANSFORMATION-BASED ANALOG-TO-DIGITAL CONVERTER CALIBRATION SYSTEM」

專利國別: 美國  發表日期: 2017-06-28 10:25:05  最後修改: 2017-07-13 11:32:47

項目 內容
本校案號 P99024A
發明人 李順裕、梁明鈞
所屬院 工學院
所屬系所 電機工程學系所
類型 發明
申請號 12/574,772
申請日期 2009-10-07
公告號 US 2010-0103007 A1
公告/公開日期 2010-04-29
證書號 US7,864,089B2
核准日期 2011-01-04
國際分類號 H03M 1/06 (20060101)
專利權期間 2009.10.07~2029.10.07
專利摘要 The present invention discloses an FFT-based ADC calibration system able to solve the problems of capacitor mismatch and finite Op-Amp open loop gain, which result in that the radix of the gain of each stage is not exactly equal to 2. The present invention uses an FFT processor to calculate the real radix of each stage and uses a digital method to generate new digital outputs. As the present invention can compensate the finite gain of Op-Amp, the specification of Op-Amp is not so critical in designing ADC. Therefore, the low-gain Op-Amp can be used to reduce the power consumption of ADC. Further, the FFT-based calibration technology can considerably promote the performance of ADC.
專利權人 國立中正大學