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公开(公告)号：US20190123690A1
公开(公告)日：2019-04-25
申请号：US16221472
申请日：2018-12-15
CPC分类号： H03F1/0277 , H03F1/0266 , H03F1/0272 , H03F1/223 , H03F1/56 , H03F3/19 , H03F3/245 , H03F3/345 , H03F2200/102 , H03F2200/222 , H03F2200/387 , H03F2200/451 , H03F2203/7206
摘要： Disclosed herein are amplification systems that are dynamically biased based on a signal indicative of differential envelope of an input radio-frequency (RF) signal being amplified. The amplification systems include a cascode amplifier configured to amplify the RF signal to generate an output RF signal when one of the transistors of the cascode amplifier is biased by a combination of the input RF signal and a biasing signal while the other transistor of the cascode amplifier is biased by a processed differential envelope signal. The cascode amplifier also receives a combination of a processed differential envelope signal and a supply voltage to generate the output RF signal. The biasing signal can improve or enhance the linearity of amplification systems.
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2.发明申请公开(公告)号：US20200162028A1
公开(公告)日：2020-05-21
申请号：US16660724
申请日：2019-10-22
摘要： Disclosed herein are amplification systems that are dynamically biased based on a signal indicative of an envelope of an input radio-frequency (RF) signal being amplified. The amplification systems include a power converter with an envelope tracker and an RC circuit. The envelope tracker and the RC circuit are configured to generate an envelope-based biasing signal to bias a power amplifier and an envelope-based supply voltage to power the power amplifier.
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公开(公告)号：US20180278214A1
公开(公告)日：2018-09-27
申请号：US15716493
申请日：2017-09-26
发明人： Boshi JIN , Jing-Hwa CHEN , Paul T. DICARLO , Steven Christopher SPRINKLE , Florinel G. BALTEANU , David Scott WHITEFIELD
CPC分类号： H03F1/0288 , H03F3/193 , H03F3/211 , H03F3/245 , H03F3/604 , H03F3/72 , H03F2200/111 , H03F2200/451 , H03F2203/21106 , H03F2203/7209 , H03F2203/7221 , H05K999/99
摘要： A power amplifier can include a carrier amplifier having first and second differential amplification cells with outputs coupled by a primary loop of a carrier transformer, and a peaking amplifier having first and second differential amplification cells with outputs coupled by a primary loop of a peaking transformer. The power amplifier can further include a combiner having a quarter-wave circuit implemented between the secondary loop of the carrier transformer and a secondary loop of the peaking transformer. The quarter-wave circuit can be configured to provide a characteristic impedance, such that the carrier and peaking amplifiers are presented with an impedance that is approximately the same as the characteristic impedance when both of the carrier and peaking amplifiers are turned on, and the carrier amplifier is presented with an impedance that is approximately twice the characteristic impedance when the carrier amplifier is turned on and the peaking amplifier is turned off.
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公开(公告)号：US20170338773A1
公开(公告)日：2017-11-23
申请号：US15596149
申请日：2017-05-16
CPC分类号： H03F1/0277 , H03F1/0266 , H03F1/0272 , H03F1/223 , H03F1/56 , H03F3/19 , H03F3/245 , H03F3/345 , H03F2200/102 , H03F2200/222 , H03F2200/387 , H03F2200/451 , H03F2203/7206
摘要： Disclosed herein are power amplification systems that are dynamically biased based on a signal indicative of an envelope of the signal being amplified. The power amplification systems include a power amplifier configured to amplify an input radio-frequency (RF) signal to generate an output RF signal when biased by a biasing signal. The power amplification systems also include a bias component configured to generate the biasing signal based on an envelope signal indicative of an envelope of the input RF signal. The biasing signal can improve or enhance the linearity of the power amplification systems.
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公开(公告)号：US20160028351A1
公开(公告)日：2016-01-28
申请号：US14806577
申请日：2015-07-22
发明人： Boshi JIN , Jing-Hwa CHEN , Paul T. DICARLO , Steven Christopher SPRINKLE , Florinel G. BALTEANU , David Scott WHITEFIELD
CPC分类号： H03F1/0288 , H03F3/193 , H03F3/211 , H03F3/245 , H03F3/604 , H03F3/72 , H03F2200/111 , H03F2200/451 , H03F2203/21106 , H03F2203/7209 , H03F2203/7221
摘要： Transformer-based Doherty power amplifier (PA). In some embodiments, a Doherty PA can include a carrier amplification path having an output that includes a carrier transformer, and a peaking amplification path having an output that includes a peaking transformer. The Doherty PA can further include a combiner configured to combine the outputs of the carrier and peaking amplification paths into an output node. The combiner can include a quarter-wave circuit implemented between the carrier and peaking transformers.
摘要翻译： 基于变压器的Doherty功率放大器（PA）。 在一些实施例中，Doherty PA可以包括具有包括载波变换器的输出的载波放大路径和具有包括峰值变换器的输出的峰化放大路径。 Doherty PA还可以包括组合器，其被配置为将载波的输出和峰值放大路径组合成输出节点。 组合器可以包括在载波和峰化变压器之间实现的四分之一波形电路。
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