【專利核准公告】P99024A-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」(已終止維護)
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專利國別 |
美國 |
發表日期 |
2017-06-28 10:25:05 |
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本校案號 |
P99024A |
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專利名稱 |
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」 |
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發明人 |
李順裕、梁明鈞 |
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所屬院 |
工學院 |
提案單位 |
電機工程學系暨研究所 |
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類型 |
發明 |
專利權人 |
國立中正大學 |
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申請號 |
12/574,772 |
申請日期 |
2009-10-07 |
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公開號 |
0 |
公開日期 |
2010-04-29 |
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證書號 |
US 7,864,089 B2 |
核准日期 |
2011-01-04 |
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國際分類號 |
H03M-001/06(2006.01) |
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專利權期間 |
2009.10.07~2029.10.07 |
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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. |
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圖示 |
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