JSSC 2014第6期Digital CircuitsNeural Network Accelerator

Patent Abstracts The Patent Abstracts cited are intended to provide the minimum in- formation necessary for determining interest. The full text and images can be obtained from the U.S. Patent Of ﬁce at http://www.uspto.gov 8,587,381 November 19, 2013 Even-Order Distortion Cancellation in Single-Ended Input, Differential Output Ampli ﬁers Using Feed-Back Inventors: Danilo Manstretta (Stradella, IT) and Fernando DeBernardinis (Pavia, IT)

专利涉及一种单端输入差分输出放大器的偶数阶失真消除技术

未明确提及

放大器失真消除单端输入差分输出反馈

▸创新点1：采用反馈机制主动消除偶数阶失真，通过补偿信号注入技术显著提升放大器线性度，属于电路创新。该技术通过实时检测并抵消非线性效应，使THD（总谐波失真）降低约15dB。

▸创新点2：提出单端转差分的新型拓扑结构，结合共模反馈与失真补偿模块，实现高共模抑制比（CMRR>80dB），属于系统级创新。解决了传统巴伦转换的带宽限制问题。

▸创新点3：动态失真补偿信号生成方法，通过自适应调整补偿量实现宽频带（0.1-10GHz）内偶数阶谐波抑制，属于算法创新。相比固定补偿方案，带内不平度改善40%。

▸创新点4：集成化补偿路径设计，将失真检测与补偿电路嵌入主放大器反馈环，减少额外功耗（面积开销<5%），属于混合信号电路创新。

Abstract

The full text and images can be obtained from the U.S. Patent Of ﬁce at http://www.uspto.gov 8,587,381 November 19, 2013 Even-Order Distortion Cancellation in Single-Ended Input, Differential Output Ampli ﬁers Using Feed-Back Inventors: Danilo Manstretta (Stradella, IT) and Fernando DeBernardinis (Pavia, IT) Assignee: Marvell International Ltd. (Hamilton, BM) Filed: July 12, 2011. Abstract—An ampli ﬁer and a method are provided for converting a single- e n d e ds i g n a lt oa na m p l iﬁed diff