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公开(公告)号：US20160036389A1
公开(公告)日：2016-02-04
申请号：US14803355
申请日：2015-07-20
Applicant: SKYWORKS SOLUTIONS, INC.
Inventor： Florinel G. BALTEANU , Jose Alejandro MACEDO , Peter Harris Robert POPPLEWELL , Jakub F. PINGOT
CPC classification number: H03F1/0216 , H02M3/155 , H02M2001/0045 , H03F1/0222 , H03F1/0227 , H03F1/025 , H03F1/0255 , H03F1/0277 , H03F3/082 , H03F3/195 , H03F3/245 , H03F3/45071 , H03F3/68 , H03F3/72 , H03F2200/102 , H03F2200/111 , H03F2200/429 , H03F2200/504 , H03F2200/511 , H03F2200/555 , H03F2200/78 , H03F2203/7209 , H03F2203/7221 , H03F2203/7236
Abstract: A low frequency loss correction circuit that improves the efficiency of a power amplifier at near-DC low frequencies The low frequency loss correction circuit can include a signal error detection circuit configured to produce an error signal in response to detecting one or more frequency components of a tracking signal below a cutoff frequency that are substantially attenuated through a capacitive path. The low frequency loss correction circuit can include a drive circuit configured to convert the error signal into a low frequency correction signal, and provide the low frequency correction signal to a voltage supply line, the low frequency correction signal including at least some of the one or more frequency components of the tracking signal below a cutoff frequency that are substantially attenuated through the capacitive path.
Abstract translation: 一种低频损失校正电路，其提高近DC直流低频率下的功率放大器的效率低频损耗校正电路可以包括信号误差检测电路，其被配置为响应于检测到的一个或多个频率分量而产生误差信号 跟踪信号低于通过电容路径基本衰减的截止频率。 低频损失校正电路可以包括驱动电路，其被配置为将误差信号转换为低频校正信号，并将低频校正信号提供给电压供应线，该低频校正信号包括至少一个或 跟踪信号的更多频率分量低于通过电容路径基本衰减的截止频率。
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公开(公告)号：US20180159476A1
公开(公告)日：2018-06-07
申请号：US15825036
申请日：2017-11-28
Applicant: SKYWORKS SOLUTIONS, INC.
Inventor： Florinel G. BALTEANU , Jose Alejandro MACEDO , Peter Harris Robert POPPLEWELL , Jakub F. PINGOT
CPC classification number: H03F1/0216 , H02M3/155 , H02M2001/0045 , H03F1/0222 , H03F1/0227 , H03F1/025 , H03F1/0255 , H03F1/0277 , H03F3/082 , H03F3/195 , H03F3/245 , H03F3/45071 , H03F3/68 , H03F3/72 , H03F2200/102 , H03F2200/111 , H03F2200/429 , H03F2200/504 , H03F2200/511 , H03F2200/555 , H03F2200/78 , H03F2203/7209 , H03F2203/7221 , H03F2203/7236
Abstract: Envelope tracking for radio-frequency applications. In some embodiments, a low frequency loss correction circuit can include a signal error detection circuit configured to produce an error signal in response to detecting one or more frequency components of a tracking signal below a cutoff frequency that are substantially attenuated through a capacitive path. The low frequency loss correction circuit can further include a drive circuit configured to convert the error signal into a low frequency correction signal, and provide the low frequency correction signal to a voltage supply line, the low frequency correction signal including at least some of the one or more frequency components of the tracking signal below a cutoff frequency that are substantially attenuated through the capacitive path.
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