发明授权
US08164382B2 Concept, method and apparatus of improved distortion switched-mode amplifier
有权
改进的失真开关模式放大器的概念，方法和装置
- 专利标题： Concept, method and apparatus of improved distortion switched-mode amplifier
- 专利标题（中）： 改进的失真开关模式放大器的概念，方法和装置
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申请号： US13134616申请日： 2011-06-10
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公开(公告)号： US08164382B2公开(公告)日： 2012-04-24
- 发明人: Mykhaylo Teplechuk
- 申请人： Mykhaylo Teplechuk
- 申请人地址： DE Kirchheim/Teck-Nabern
- 专利权人： Dialog Semiconductor GmbH
- 当前专利权人： Dialog Semiconductor GmbH
- 当前专利权人地址： DE Kirchheim/Teck-Nabern
- 代理机构： Saile Ackerman LLC
- 代理商 Stephen B. Ackerman
- 优先权： EP09368026 20090811
- 主分类号： H03F3/38
- IPC分类号： H03F3/38 ; H03F3/217
摘要：
Systems and methods for switched-mode amplifiers having improved harmonic distortion are disclosed. High order in-band filtering is enabled without undue trade-off of distortion due to intermodulation/aliasing. A pre-modulation block is introduced, deployed between a loop filter block and a pulse-width modulation block, performing uniform pulse-width modulation. The pre-modulation block attenuates/removes amplitude dependent high frequency ripples before pulse-width modulation. The pre-modulation block in conjunction with the pulse-width modulation block performs double sampling of the input signals.
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