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

IPC: H03F3/04 ,  H03F1/02 ,  H03F1/30

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.

公开(公告)号：US10211787B2

公开(公告)日：2019-02-19

申请号：US16119832

申请日：2018-08-31

Applicant: NXP USA, Inc.

Inventor： Abdulrhman M. S. Ahmed ,  Mario M. Bokatius ,  Paul R. Hart ,  Joseph Staudinger ,  Richard E. Sweeney

IPC: H03F1/02 ,  H03G1/00 ,  G06F13/42 ,  H03F3/19 ,  H04L7/00 ,  H03F3/189 ,  H04L27/22 ,  H03F3/68 ,  H03F3/60 ,  H03F3/21 ,  G06G7/10

Abstract: Embodiments of circuits for use with an amplifier that includes multiple amplifier paths include a first circuit and a second circuit in parallel with the first circuit. The first circuit includes a first input coupled to a first power divider output, a first output coupled to a first amplifier path of the multiple amplifier paths, and a first adjustable phase shifter and a first attenuator series coupled between the first input and the first output. The second circuit includes a second input coupled to a second power divider output, a second output coupled to a second amplifier path of the multiple amplifier paths, and a second adjustable phase shifter coupled between the second input and the second output.

公开(公告)号：US09979355B2

公开(公告)日：2018-05-22

申请号：US15393473

申请日：2016-12-29

Applicant: NXP USA, Inc.

Inventor： Joseph Staudinger ,  Abdulrhman M. S. Ahmed ,  Paul R. Hart ,  Monte G. Miller ,  Nicholas J. Spence

IPC: H03F3/19 ,  H03F1/02 ,  H03F1/32 ,  H03F3/24

Abstract: An embodiment of an amplifier system includes a modifiable signal adjustment device with an RF signal adjustment circuit coupled between first and second nodes. The RF signal adjustment circuit includes an adjustable phase shifter and an adjustable attenuator coupled in series with each other. The device also includes a memory and a controller circuit. The controller circuit retrieves a phase shift value and an attenuation value from the memory. The controller circuit then controls the adjustable phase shifter to apply a phase shift corresponding to the phase shift value to an input RF signal received at the first node, and controls the adjustable attenuator to apply an attenuation corresponding to the attenuation value to the input RF signal. Applying the phase shift and the attenuation results in an output RF signal at the second node.

公开(公告)号：US20170257091A1

公开(公告)日：2017-09-07

申请号：US15601567

申请日：2017-05-22

Applicant: NXP USA, Inc.

Inventor： Bruce M. Green ,  Enver Krvavac ,  Joseph Staudinger

IPC: H03K17/16 ,  G06F1/32

CPC classification number: H03K17/165 ,  G06F1/3206 ,  H03K17/162

Abstract: An embodiment of a device includes a terminal, an active transistor die electrically coupled to the terminal, a detector configured to sense a signal characteristic on the terminal, and control circuitry electrically coupled to the active transistor die and to the detector, wherein the active transistor die, detector, and control circuitry are coupled to a package. The control circuitry may include a control element and a control device. Based on the signal characteristic, the control circuitry controls which of multiple operating states the device operates. A method for controlling the operating state of the device includes sensing, using the detector, a signal characteristic at the terminal, and determining, using the control device, whether the signal characteristic conforms to a pre-set criteria, and when the signal characteristic does not conform to the pre-set criteria, modifying the state of the control element to alter the operating state of the device.

公开(公告)号：US09755579B1

公开(公告)日：2017-09-05

申请号：US15374803

申请日：2016-12-09

Applicant: NXP USA INC.

Inventor： Abdulrhman M. S. Ahmed ,  Joseph Staudinger

IPC: H04B1/16 ,  H03F1/02 ,  H04L27/22 ,  H04L25/03 ,  H01C1/16 ,  H03F3/193 ,  H03F3/21 ,  H03G1/00

CPC classification number: H03F1/0288 ,  H01C1/16 ,  H03F1/0266 ,  H03F1/3241 ,  H03F1/3282 ,  H03F3/193 ,  H03F3/245 ,  H03F2200/102 ,  H03F2200/18 ,  H03F2200/451 ,  H03G3/3042 ,  H03G2201/106 ,  H04L25/03834 ,  H04L27/22

Abstract: The embodiments described herein include amplifiers configured for use in radio frequency (RF) applications. In accordance with these embodiments, the amplifiers are implemented to generate a shaped envelope signal, and to apply the shaped envelope signal to transistor gate(s) of the amplifier to provide gate bias modulation. So configured, the shaped envelope signal may facilitate high linearity in the amplifier.