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公开(公告)号：US20150091653A1
公开(公告)日：2015-04-02
申请号：US14501453
申请日：2014-09-30
Applicant: RF Micro Devices, Inc.
Inventor： Kevin Wesley Kobayashi , Hamhee Jeon
CPC classification number: H03F1/0288 , H03F1/0233 , H03F1/3247 , H03F1/56 , H03F3/19 , H03F3/193 , H03F2200/102 , H03F2200/105 , H03F2200/192 , H03F2200/204 , H03F2200/36 , H03F2200/451
Abstract: A reconfigurable load modulation amplifier having a carrier amplifier and a peak amplifier that are coupled in parallel is disclosed. The peak amplifier provides additional power amplification when the carrier amplifier is driven into saturation. A quadrature coupler coupled between the carrier amplifier and the peak amplifier is configured to combine power from both the carrier amplifier and the peak amplifier for output through an output load terminal. The reconfigurable load modulation amplifier further includes control circuitry coupled to an isolation port of the quadrature coupler and configured to provide adjustable impedance at the isolation port of the quadrature coupler. As such, impedance at the isolation port of the quadrature coupler is tunable such that at least a carrier or peak amplifier is presented with a quadrature coupler load impedance that ranges from around about half an output load termination impedance to around about twice the output load termination impedance.
Abstract translation: 公开了具有并联耦合的载波放大器和峰值放大器的可重构负载调制放大器。 当载波放大器被驱动到饱和时，峰值放大器提供额外的功率放大。 耦合在载波放大器和峰值放大器之间的正交耦合器被配置为组合来自载波放大器和峰值放大器的功率，用于通过输出负载端子输出。 可重构负载调制放大器还包括耦合到正交耦合器的隔离端口并被配置为在正交耦合器的隔离端口处提供可调阻抗的控制电路。 因此，正交耦合器的隔离端口处的阻抗是可调谐的，使得至少一个载波或峰值放大器呈现正交耦合器负载阻抗，该阻抗的大约约一半的输出负载终端阻抗到大约两倍的输出负载终端 阻抗。
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公开(公告)号：US09391564B2
公开(公告)日：2016-07-12
申请号：US14103089
申请日：2013-12-11
Applicant: RF Micro Devices, Inc.
Inventor： Hamhee Jeon , Kevin Wesley Kobayashi
Abstract: Radio frequency (RF) amplification devices are disclosed that include Doherty amplification circuits and control circuits along with methods of operating the same. In one embodiment, the Doherty amplification circuit includes a quadrature coupler having an isolation port and a tunable impedance load coupled to the isolation port and configured to provide a tunable impedance. The control circuit is configured to tune the tunable impedance of the tunable impedance load at the isolation port dynamically as a function of the RF power of the Doherty amplification circuit. In this manner, the control circuit can provide dynamic load modulation, thereby increasing the power efficiency of the Doherty amplification circuit, particularly at backed-off power levels. The load modulation provided by the control circuit also allows the Doherty amplification circuit to provide broadband amplification in various RF communication bands.
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公开(公告)号：US09780733B2
公开(公告)日：2017-10-03
申请号：US15006905
申请日：2016-01-26
Applicant: RF Micro Devices, Inc.
Inventor： Hamhee Jeon , Kevin Wesley Kobayashi
CPC classification number: H03F1/0288 , H03F1/42 , H03F1/56 , H03F3/19 , H03F3/602 , H03F2200/36 , H03F2200/387 , H03F2200/451 , H03F2203/21139
Abstract: Radio frequency (RF) amplification devices are disclosed that include Doherty amplification circuits and methods of operating the same. In one embodiment, a Doherty amplification circuit includes a main carrier RF amplifier, a peaking RF amplifier, and a periodic quadrature coupler. To provide Doherty amplification, the peaking RF amplifier is configured to be deactivated while an RF signal is below a threshold level and is configured to be activated while the RF signal is above the threshold level. The periodic quadrature coupler is configured to combine a first RF split signal from the main carrier RF amplifier and a second RF split signal from the peaking RF amplifier into the RF signal, such that the RF signal is output from an output port while the peaking RF amplifier is activated. The periodic quadrature coupler allows the Doherty amplification circuit to provide broadband amplification in various RF communication bands.
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公开(公告)号：US20160142023A1
公开(公告)日：2016-05-19
申请号：US15006905
申请日：2016-01-26
Applicant: RF Micro Devices, Inc.
Inventor： Hamhee Jeon , Kevin Wesley Kobayashi
CPC classification number: H03F1/0288 , H03F1/42 , H03F1/56 , H03F3/19 , H03F3/602 , H03F2200/36 , H03F2200/387 , H03F2200/451 , H03F2203/21139
Abstract: Radio frequency (RF) amplification devices are disclosed that include Doherty amplification circuits and methods of operating the same. In one embodiment, a Doherty amplification circuit includes a main carrier RF amplifier, a peaking RF amplifier, and a periodic quadrature coupler. To provide Doherty amplification, the peaking RF amplifier is configured to be deactivated while an RF signal is below a threshold level and is configured to be activated while the RF signal is above the threshold level. The periodic quadrature coupler is configured to combine a first RF split signal from the main carrier RF amplifier and a second RF split signal from the peaking RF amplifier into the RF signal, such that the RF signal is output from an output port while the peaking RF amplifier is activated. The periodic quadrature coupler allows the Doherty amplification circuit to provide broadband amplification in various RF communication bands.
Abstract translation: 公开了包括Doherty放大电路和其操作方法的射频（RF）放大器件。 在一个实施例中，Doherty放大电路包括主载波RF放大器，峰化RF放大器和周期性正交耦合器。 为了提供Doherty放大，峰值RF放大器被配置为在RF信号低于阈值电平时被去激活，并且被配置为在RF信号高于阈值电平时被激活。 周期性正交耦合器被配置为将来自主载波RF放大器的第一RF分离信号和来自峰值RF放大器的第二RF分离信号组合成RF信号，使得RF信号从输出端口输出，而峰值RF 放大器被激活。 周期性正交耦合器允许Doherty放大电路在各种RF通信频带中提供宽带放大。
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Patent Agency Ranking
公开(公告)号：US09484865B2
公开(公告)日：2016-11-01
申请号：US14501453
申请日：2014-09-30
Applicant: RF Micro Devices, Inc.
Inventor： Kevin Wesley Kobayashi , Hamhee Jeon
CPC classification number: H03F1/0288 , H03F1/0233 , H03F1/3247 , H03F1/56 , H03F3/19 , H03F3/193 , H03F2200/102 , H03F2200/105 , H03F2200/192 , H03F2200/204 , H03F2200/36 , H03F2200/451
Abstract: A reconfigurable load modulation amplifier having a carrier amplifier and a peak amplifier that are coupled in parallel is disclosed. The peak amplifier provides additional power amplification when the carrier amplifier is driven into saturation. A quadrature coupler coupled between the carrier amplifier and the peak amplifier is configured to combine power from both the carrier amplifier and the peak amplifier for output through an output load terminal. The reconfigurable load modulation amplifier further includes control circuitry coupled to an isolation port of the quadrature coupler and configured to provide adjustable impedance at the isolation port of the quadrature coupler. As such, impedance at the isolation port of the quadrature coupler is tunable such that at least a carrier or peak amplifier is presented with a quadrature coupler load impedance that ranges from around about half an output load termination impedance to around about twice the output load termination impedance.
Abstract translation: 公开了具有并联耦合的载波放大器和峰值放大器的可重构负载调制放大器。 当载波放大器被驱动到饱和时，峰值放大器提供额外的功率放大。 耦合在载波放大器和峰值放大器之间的正交耦合器被配置为组合来自载波放大器和峰值放大器的功率，用于通过输出负载端子输出。 可重构负载调制放大器还包括耦合到正交耦合器的隔离端口并被配置为在正交耦合器的隔离端口处提供可调阻抗的控制电路。 因此，正交耦合器的隔离端口处的阻抗是可调谐的，使得至少一个载波或峰值放大器呈现正交耦合器负载阻抗，该阻抗的大约约一半的输出负载终端阻抗到大约两倍的输出负载终端 阻抗。
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公开(公告)号：US09431969B2
公开(公告)日：2016-08-30
申请号：US14103089
申请日：2013-12-11
Applicant: RF Micro Devices, Inc.
Inventor： Hamhee Jeon , Kevin Wesley Kobayashi
CPC classification number: H03F1/0288 , H03F3/195
Abstract: Radio frequency (RF) amplification devices are disclosed that include Doherty amplification circuits and control circuits along with methods of operating the same. In one embodiment, the Doherty amplification circuit includes a quadrature coupler having an isolation port and a tunable impedance load coupled to the isolation port and configured to provide a tunable impedance. The control circuit is configured to tune the tunable impedance of the tunable impedance load at the isolation port dynamically as a function of the RF power of the Doherty amplification circuit. In this manner, the control circuit can provide dynamic load modulation, thereby increasing the power efficiency of the Doherty amplification circuit, particularly at backed-off power levels. The load modulation provided by the control circuit also allows the Doherty amplification circuit to provide broadband amplification in various RF communication bands.
Abstract translation: 公开了包括Doherty放大电路和控制电路的射频（RF）放大器件及其操作方法。 在一个实施例中，Doherty放大电路包括正交耦合器，其具有耦合到隔离端口并被配置为提供可调谐阻抗的隔离端口和可调阻抗负载。 控制电路被配置为根据Doherty放大电路的RF功率动态地调节隔离端口处的可调谐阻抗负载的可调谐阻抗。 以这种方式，控制电路可以提供动态负载调制，从而提高了Doherty放大电路的功率效率，特别是在退避功率电平方面。 由控制电路提供的负载调制还允许Doherty放大电路在各种RF通信频带中提供宽带放大。
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公开(公告)号：US09397617B2
公开(公告)日：2016-07-19
申请号：US14314357
申请日：2014-06-25
Applicant: RF Micro Devices, Inc.
Inventor： Hamhee Jeon , Kevin Wesley Kobayashi
CPC classification number: H03F1/0288 , H03F1/42 , H03F1/56 , H03F3/19 , H03F3/602 , H03F2200/36 , H03F2200/387 , H03F2200/451 , H03F2203/21139
Abstract: Radio frequency (RF) amplification devices are disclosed that include Doherty amplification circuits and methods of operating the same. In one embodiment, a Doherty amplification circuit includes a main carrier RF amplifier, a peaking RF amplifier, and a periodic quadrature coupler. To provide Doherty amplification, the peaking RF amplifier is configured to be deactivated while an RF signal is below a threshold level and is configured to be activated while the RF signal is above the threshold level. The periodic quadrature coupler is configured to combine a first RF split signal from the main carrier RF amplifier and a second RF split signal from the peaking RF amplifier into the RF signal, such that the RF signal is output from an output port while the peaking RF amplifier is activated. The periodic quadrature coupler allows the Doherty amplification circuit to provide broadband amplification in various RF communication bands.
Abstract translation: 公开了包括Doherty放大电路和其操作方法的射频（RF）放大器件。 在一个实施例中，Doherty放大电路包括主载波RF放大器，峰化RF放大器和周期性正交耦合器。 为了提供Doherty放大，峰值RF放大器被配置为在RF信号低于阈值电平时被去激活，并且被配置为在RF信号高于阈值电平时被激活。 周期性正交耦合器被配置为将来自主载波RF放大器的第一RF分离信号和来自峰值RF放大器的第二RF分离信号组合成RF信号，使得RF信号从输出端口输出，而峰值RF 放大器被激活。 周期性正交耦合器允许Doherty放大电路在各种RF通信频带中提供宽带放大。
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公开(公告)号：US20140375389A1
公开(公告)日：2014-12-25
申请号：US14314357
申请日：2014-06-25
Applicant: RF Micro Devices, Inc.
Inventor： Hamhee Jeon , Kevin Wesley Kobayashi
CPC classification number: H03F1/0288 , H03F1/42 , H03F1/56 , H03F3/19 , H03F3/602 , H03F2200/36 , H03F2200/387 , H03F2200/451 , H03F2203/21139
Abstract: Radio frequency (RF) amplification devices are disclosed that include Doherty amplification circuits and methods of operating the same. In one embodiment, a Doherty amplification circuit includes a main carrier RF amplifier, a peaking RF amplifier, and a periodic quadrature coupler. To provide Doherty amplification, the peaking RF amplifier is configured to be deactivated while an RF signal is below a threshold level and is configured to be activated while the RF signal is above the threshold level. The periodic quadrature coupler is configured to combine a first RF split signal from the main carrier RF amplifier and a second RF split signal from the peaking RF amplifier into the RF signal, such that the RF signal is output from an output port while the peaking RF amplifier is activated. The periodic quadrature coupler allows the Doherty amplification circuit to provide broadband amplification in various RF communication bands.
Abstract translation: 公开了包括Doherty放大电路和其操作方法的射频（RF）放大器件。 在一个实施例中，Doherty放大电路包括主载波RF放大器，峰化RF放大器和周期性正交耦合器。 为了提供Doherty放大，峰值RF放大器被配置为在RF信号低于阈值电平时被去激活，并且被配置为在RF信号高于阈值电平时被激活。 周期性正交耦合器被配置为将来自主载波RF放大器的第一RF分离信号和来自峰值RF放大器的第二RF分离信号组合成RF信号，使得RF信号从输出端口输出，而峰值RF 放大器被激活。 周期性正交耦合器允许Doherty放大电路在各种RF通信频带中提供宽带放大。
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公开(公告)号：US20140159818A1
公开(公告)日：2014-06-12
申请号：US14103089
申请日：2013-12-11
Applicant: RF Micro Devices, Inc.
Inventor： Hamhee Jeon , Kevin Wesley Kobayashi
CPC classification number: H03F1/0288 , H03F3/195
Abstract: Radio frequency (RF) amplification devices are disclosed that include Doherty amplification circuits and control circuits along with methods of operating the same. In one embodiment, the Doherty amplification circuit includes a quadrature coupler having an isolation port and a tunable impedance load coupled to the isolation port and configured to provide a tunable impedance. The control circuit is configured to tune the tunable impedance of the tunable impedance load at the isolation port dynamically as a function of the RF power of the Doherty amplification circuit. In this manner, the control circuit can provide dynamic load modulation, thereby increasing the power efficiency of the Doherty amplification circuit, particularly at backed-off power levels. The load modulation provided by the control circuit also allows the Doherty amplification circuit to provide broadband amplification in various RF communication bands.
Abstract translation: 公开了包括Doherty放大电路和控制电路的射频（RF）放大器件及其操作方法。 在一个实施例中，Doherty放大电路包括正交耦合器，其具有耦合到隔离端口并被配置为提供可调谐阻抗的隔离端口和可调阻抗负载。 控制电路被配置为根据Doherty放大电路的RF功率动态地调节隔离端口处的可调谐阻抗负载的可调谐阻抗。 以这种方式，控制电路可以提供动态负载调制，从而提高了Doherty放大电路的功率效率，特别是在退避功率电平方面。 由控制电路提供的负载调制还允许Doherty放大电路在各种RF通信频带中提供宽带放大。
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