專利國別

  美國   

發表日期

2012-06-22 10:05:06

本校案號

P98043A

專利名稱

自動調整提高動態範圍之三角積分調變器架構及方法「SIGMA-DELTA MODULATOR ARCHITECTURE CAPABLE OF AUTOMATICALLY IMPROVING DYNAMIC RANGE METHOD FOR THE SAME」

發明人

李順裕、張榮貴、陳志遠、洪家華

所屬院

工學院

提案單位

電機工程學系暨研究所

類型

發明

專利權人

國立中正大學

申請號

12/431,241

申請日期

2009-04-28

公開號

0

公開日期

2010-07-01

證書號

US 7,800,524 B2

核准日期

2010-09-21

國際分類號

H03M-003/00(2006.01)

專利權期間

2009.04.28~2029.04.28(延長31天至2029.05.29)

專利摘要

The present invention discloses a sigma-delta modulator architecture capable of automatically improving dynamic range and a method for the same. Based on the concept that different dynamic ranges of a sigma-delta modulator can be obtained via adjusting the signal power gain thereof, the present invention provides a novel algorithm to implement an automation program. The present invention finds out several sets of dynamic-range curves to improve the overall dynamic range. Via a high-level sigma-delta modulator architecture, the present invention can calculate the required feedforward coefficients. Furrther, the present invention install in the sigma-delta modulator architecture with four additional components, including a peak detection unit, a comparator unit, a digital coefficient control unit and a switch unit, to dynamically detect the output of the modulator and dynamically modify the feedforward coefficient of the sigma-delta modulator. Thus is extended the dynamic range of the sigma-delta modulator.

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