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1.发明授权公开(公告)号：US10742173B2
公开(公告)日：2020-08-11
申请号：US16139671
申请日：2018-09-24
Applicant: NXP USA, Inc.
Inventor： Elie Maalouf , Joseph Staudinger , Don Hayes
Abstract: Power amplifiers, amplifier systems, and related methods are disclosed herein. In one example embodiment, the amplifier system includes a bias controller that enables fast switching between an on state bias voltage and an off state bias voltage for the power amplifier. The bias controller can transition a low impedance switch to an on state to electrically couple a first electrode of a charge holding capacitor to an input of the power amplifier. The charge holding capacitor can be pre charged with the on state bias voltage to quickly provide the on state bias voltage to the power amplifier. The bias controller can also transition the low impedance switch to an off state to couple the input of the power amplifier to the off state bias voltage.
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公开(公告)号：US20200099345A1
公开(公告)日：2020-03-26
申请号：US16139761
申请日：2018-09-24
Applicant: NXP USA, Inc.
Inventor： Elie Maalouf , Joseph Staudinger , Don Hayes
IPC: H03F1/02
Abstract: Power amplifiers, amplifier systems, and related methods are disclosed herein. In one example embodiment, the amplifier system includes a bias controller that automatically sets a bias voltage of a power amplifier device by monitoring a reference device that is in a scaled relationship with the power amplifier device, and integrally is formed with the power amplifier device on a same semiconductor die. The bias controller can compare a voltage at an input to the reference device to a reference voltage, and then adjust a voltage at a control input of the reference device to a stabilized voltage that induces the reference device to drive the voltage at the input to the reference device equal to the reference voltage. Finally, the bias controller can transform, based on the scaled relationship, the stabilized voltage into a bias voltage applied to a control input of the power amplifier device.
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3.发明申请公开(公告)号：US20200099344A1
公开(公告)日：2020-03-26
申请号：US16139671
申请日：2018-09-24
Applicant: NXP USA, Inc.
Inventor： Elie Maalouf , Joseph Staudinger , Don Hayes
Abstract: Power amplifiers, amplifier systems, and related methods are disclosed herein. In one example embodiment, the amplifier system includes a bias controller that enables fast switching between an on state bias voltage and an off state bias voltage for the power amplifier. The bias controller can transition a low impedance switch to an on state to electrically couple a first electrode of a charge holding capacitor to an input of the power amplifier. The charge holding capacitor can be pre charged with the on state bias voltage to quickly provide the on state bias voltage to the power amplifier. The bias controller can also transition the low impedance switch to an off state to couple the input of the power amplifier to the off state bias voltage.
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公开(公告)号：US10608595B1
公开(公告)日：2020-03-31
申请号：US16139761
申请日：2018-09-24
Applicant: NXP USA, Inc.
Inventor： Elie Maalouf , Joseph Staudinger , Don Hayes
Abstract: Power amplifiers, amplifier systems, and related methods are disclosed herein. In one example embodiment, the amplifier system includes a bias controller that automatically sets a bias voltage of a power amplifier device by monitoring a reference device that is in a scaled relationship with the power amplifier device, and integrally is formed with the power amplifier device on a same semiconductor die. The bias controller can compare a voltage at an input to the reference device to a reference voltage, and then adjust a voltage at a control input of the reference device to a stabilized voltage that induces the reference device to drive the voltage at the input to the reference device equal to the reference voltage. Finally, the bias controller can transform, based on the scaled relationship, the stabilized voltage into a bias voltage applied to a control input of the power amplifier device.
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