公开(公告)号：WO2011119460A1

公开(公告)日：2011-09-29

申请号：PCT/US2011/029136

申请日：2011-03-21

Applicant: RF MICRO DEVICES, INC.

Inventor： KHLAT, Nadim

IPC: H04B1/40

CPC classification number: H04B1/406

Abstract: A user equipment (UE) front end (FE) that is adapted for multiband simultaneous transmission and reception is provided. The UE FE includes a first multi-filter device having a transmit (TX) band-pass filter adapted to pass a first TX signal band associated with a first radio access technology type, and a receive (RX) band-pass filter adapted to pass a second RX signal band associated with a second radio access technology type. The UE FE also includes a second multi-filter device having a TX band-pass filter adapted to pass a second TX signal band associated with the second radio access technology type and an RX band-pass filter adapted to pass the first RX signal band associated with the first radio access technology type. The first radio access technology type and the second radio access technology type are preferably long term evolution (LTE) and code division multiple access 2000 (CDMA2000), respectively, or viceversa.

Abstract translation: 提供了适用于多频带同时发送和接收的用户设备（UE）前端（FE）。 UE FE包括具有适于通过与第一无线电接入技术类型相关联的第一TX信号频带的发射（TX）带通滤波器的第一多滤波器装置和适于传递的接收（RX）带通滤波器 与第二无线电接入技术类型相关联的第二RX信号频带。 UE FE还包括具有适于通过与第二无线电接入技术类型相关联的第二TX信号频带的TX带通滤波器的第二多滤波器设备和适于通过相关联的第一RX信号带的RX带通滤波器 具有第一种无线电接入技术类型。 第一无线电接入技术类型和第二无线电接入技术类型优选地分别是长期演进（LTE）和码分多址2000（CDMA2000），或者反之亦然。

公开(公告)号：WO2014152903A2

公开(公告)日：2014-09-25

申请号：PCT/US2014/028178

申请日：2014-03-14

Applicant: RF MICRO DEVICES, INC

Inventor： CHIRON, Jean-Frederic ,  KHLAT, Nadim

IPC: H03F1/02

CPC classification number: H03F1/02 ,  H03F1/0222 ,  H03F3/189 ,  H03F3/20

Abstract: A radio frequency (RF) system includes an RF power amplifier (PA), which uses an envelope tracking power supply voltage to provide an RF transmit signal, which has an RF envelope; and further includes an envelope tracking power supply, which provides the envelope tracking power supply voltage based on a setpoint. RF transceiver circuitry, which includes envelope control circuitry and an RF modulator is disclosed. The envelope control circuitry provides the setpoint, such that the envelope tracking power supply voltage is clipped to form clipped regions and substantially tracks the RF envelope between the clipped regions, wherein a dynamic range of the envelope tracking power supply voltage is limited. The RF modulator provides an RF input signal to the RF PA, which receives and amplifies the RF input signal to provide the RF transmit signal.

Abstract translation: 射频（RF）系统包括RF功率放大器（PA），其使用包络跟踪电源电压来提供具有RF包络的RF发射信号; 并且还包括一个包络跟踪电源，它根据设定点提供包络跟踪电源电压。 公开了包括封装控制电路和RF调制器的RF收发器电路。 包络控制电路提供设定点，使得包络跟踪电源电压被限幅以形成限幅区域，并且基本上跟踪限幅区域之间的RF包络，其中包络跟踪电源电压的动态范围受到限制。 RF调制器向RF PA提供RF输入信号，RF PA接收并放大RF输入信号以提供RF发射信号。

公开(公告)号：WO2013082384A1

公开(公告)日：2013-06-06

申请号：PCT/US2012/067230

申请日：2012-11-30

Applicant: RF MICRO DEVICES, INC.

Inventor： KHLAT, Nadim

IPC: H02M1/10 ,  H03F1/02 ,  H03F3/24 ,  H02M1/14 ,  H04B15/00 ,  H03F1/26 ,  H02M1/00

CPC classification number: G05F1/59 ,  H02M1/10 ,  H02M1/14 ,  H02M2001/0067 ,  H03F1/0227 ,  H03F1/26 ,  H03F3/24 ,  H03F2200/351 ,  H03F2200/451 ,  H03F2200/504 ,  H04B15/005

Abstract: This disclosure relates to radio frequency (RF) power converters and methods of operating the same. In one embodiment, an RF power converter includes an RF switching converter, a low-drop out (LDO) regulation circuit, and an RF filter. The RF filter is coupled to receive a pulsed output voltage from the RF switching converter and a supply voltage from the LDO regulation circuit. The RF filter is operable to alternate between a first RF filter topology and a second RF filter topology. In the first RF filter topology, the RF filter is configured to convert the pulsed output voltage from a switching circuit into the supply voltage. The RF filter in the second RF filter topology is configured to filter the supply voltage from the LDO regulation circuit to reduce a ripple variation in a supply voltage level of the supply voltage. As such, the RF filter provides greater versatility.

Abstract translation: 本公开涉及射频（RF）功率转换器及其操作方法。 在一个实施例中，RF功率转换器包括RF开关转换器，低压降（LDO）调节电路和RF滤波器。 RF滤波器被耦合以接收来自RF开关转换器的脉冲输出电压和来自LDO调节电路的电源电压。 RF滤波器可操作以在第一RF滤波器拓扑和第二RF滤波器拓扑之间交替。 在第一RF滤波器拓扑中，RF滤波器被配置为将来自开关电路的脉冲输出电压转换成电源电压。 第二RF滤波器拓扑中的RF滤波器被配置为对来自LDO调节电路的电源电压进行滤波，以减少电源电压的电源电压电平中的纹波变化。 因此，RF滤波器提供更大的通用性。

公开(公告)号：WO2013063387A2

公开(公告)日：2013-05-02

申请号：PCT/US2012/062110

申请日：2012-10-26

Applicant: RF MICRO DEVICES, INC.

Inventor： KHLAT, Nadim ,  KAY, Michael R. ,  GORISSE, Philippe

IPC: G05F1/46 ,  H03G1/00

CPC classification number: H02M3/156 ,  H02M1/15 ,  H02M2001/0045 ,  H02M2001/0048 ,  H03F1/0216 ,  H03F3/2171 ,  Y02B70/1491

Abstract: A direct current (DC)-DC converter, which includes a parallel amplifier and a switching supply, is disclosed. The switching supply includes switching circuitry, a first inductive element, and a second inductive element. The parallel amplifier has a feedback input and a parallel amplifier output. The switching circuitry has a switching circuitry output. The first inductive element is coupled between the switching circuitry output and the feedback input. The second inductive element is coupled between the feedback input and the parallel amplifier output.

Abstract translation: 公开了一种包括并联放大器和开关电源的直流（DC）-DC转换器。 开关电源包括开关电路，第一电感元件和第二电感元件。 并联放大器具有反馈输入和并行放大器输出。 开关电路具有开关电路输出。 第一电感元件耦合在开关电路输出和反馈输入之间。 第二电感元件耦合在反馈输入端和并行放大器输出端之间。

公开(公告)号：WO2012068260A1

公开(公告)日：2012-05-24

申请号：PCT/US2011/061009

申请日：2011-11-16

Applicant: RF MICRO DEVICES, INC.

Inventor： KHLAT, Nadim ,  PRASAD, Shanthi

IPC: G06F7/556 ,  H03M7/50

CPC classification number: G06F7/556 ,  G06F1/0307 ,  H03F1/0227 ,  H03M7/04

Abstract: A digital log gain to digital linear gain multiplier is disclosed. The digital log gain to digital linear gain multiplier includes a log gain splitter adapted to split a log gain input into an integer log part and a remainder log part. A log scale-to-linear scale converter is adapted to output a linear gain value in response to the integer log part and the remainder log part. A gain multiply circuit is adapted to multiply a digital signal by the linear gain value to output a gain-enhanced digital signal.

Abstract translation: 公开了对数字线性增益乘数的数字对数增益。 对数字线性增益乘数的数字对数增益包括一个对数增益分配器，适用于将日志增益输入分解为整数对数部分和余数对数部分。 对数缩放比例转换器适于响应于整数对数部分和其余日志部分输出线性增益值。 增益乘法电路适于将数字信号乘以线性增益值以输出增益增强数字信号。

公开(公告)号：WO2012027619A4

公开(公告)日：2012-03-01

申请号：PCT/US2011/049243

申请日：2011-08-25

Applicant: RF MICRO DEVICES, INC.

Inventor： KHLAT, Nadim

IPC: H03F3/00

Abstract: Embodiments disclosed in the detailed description relate to a pseudo-envelope follower power management system for managing the power delivered to a linear RF power amplifier. The pseudo-envelope follower power management system may include a switch mode power supply converter and a parallel amplifier cooperatively coupled to provide a linear RF power amplifier supply to the linear RF power amplifier. The pseudo-envelope follower power management system may include a charge pump configured to power the parallel amplifier. The charge pump may generate a plurality of output voltage levels. The charge pump may be either a boost or a boost/buck charge pump. The pseudo-envelope follower power management system may include an offset voltage control circuit configured to provide feedback to the switch mode power supply converter to regulate an offset voltage developed across a coupling device that couples the output of the parallel amplifier to the linear RF power amplifier supply.

公开(公告)号：WO2013063364A1

公开(公告)日：2013-05-02

申请号：PCT/US2012/062070

申请日：2012-10-26

Applicant: RF MICRO DEVICES, INC.

Inventor： KHLAT, Nadim ,  NGO, Christopher, Truong,

IPC: H02M3/156 ,  H03F1/02 ,  H02M1/00

CPC classification number: H03F1/0227 ,  H02M3/156 ,  H03F3/19 ,  H03F2200/108 ,  H03F2200/351

Abstract: This disclosure relates generally to radio frequency (RF) switching converters and RF amplification devices that use RF switching converters. For example, an RF switching converter may include a switching circuit that receives a power source voltage and a switching controller that receives a target average frequency value identifying a target average frequency. The switching circuit is switchable so as to generate a pulsed output voltage from the power source voltage. The switching controller switches the switching circuit such that the pulsed output voltage has an average pulse frequency. The switching controller also detects that the average pulse frequency of the pulsed output voltage during a time period differs from the target average frequency, and reduces a difference between the average pulse frequency and the target average frequency. In this manner, the effects of manufacturing variations and operational variations on the average pulse frequency can be eliminated, or at least diminished.

Abstract translation: 本公开一般涉及使用RF开关转换器的射频（RF）开关转换器和RF放大器件。 例如，RF开关转换器可以包括接收电源电压的开关电路和接收识别目标平均频率的目标平均频率值的开关控制器。 开关电路是可切换的，以便从电源电压产生脉冲输出电压。 开关控制器切换开关电路，使得脉冲输出电压具有平均脉冲频率。 切换控制器还检测在一段时间内脉冲输出电压的平均脉冲频率与目标平均频率不同，并且减小了平均脉冲频率和目标平均频率之间的差。 以这种方式，可以消除或至少减少制造变化和操作变化对平均脉冲频率的影响。

公开(公告)号：WO2012068258A3

公开(公告)日：2012-05-24

申请号：PCT/US2011/061007

申请日：2011-11-16

Applicant: RF MICRO DEVICES, INC.

Inventor： KHLAT, Nadim ,  MYARA, David ,  RAFIN, Jérémie

IPC: G06F7/552

Abstract: Disclosed is a coordinate rotation digital computer (CORDIC) having a maximum value circuit that selects a larger of the first component or the second component. A minimum value circuit selects a minimum operand that is a smaller one of the first component or the second component. Also included are N rotator stages, each corresponding to a unique one of N predetermined vectors, each of the N rotator stages having a first multiply circuit to multiply the maximum operand by a cosine coefficient of a predetermined vector to output a first rotation component, a second multiply circuit for multiplying the minimum operand by a sine coefficient of the predetermined vector to output a second rotation component, and an adder circuit for adding the first rotation component to the second rotation component to output one of N results, and a maximum value circuit for outputting a maximum one of the N results.

公开(公告)号：WO2012027039A1

公开(公告)日：2012-03-01

申请号：PCT/US2011/044857

申请日：2011-07-21

Applicant: RF MICRO DEVICES, INC.

Inventor： KHLAT, Nadim

IPC: H03F1/02

CPC classification number: H03F1/0227 ,  H03F1/0244

Abstract: A power management system for a radio frequency (RF) power amplifier (PA) load is disclosed. The power management system includes a first switching power supply that is adapted to output a relatively constant voltage, an electronic switch for selectively coupling the first switching power supply to the RF PA load, and a second switching power that is adapted to output a dynamic DC voltage to the RF PA load. The power management system further includes a control system that is adapted to close the electronic switch to supply the relatively constant DC voltage in addition to the dynamic DC voltage to the RF PA load in a first mode and to open the electronic switch wherein the relatively constant DC voltage is not supplied to the RF PA load in a second mode.

Abstract translation: 公开了一种用于射频（RF）功率放大器（PA）负载的电源管理系统。 电源管理系统包括适于输出相对恒定电压的第一开关电源，用于将第一开关电源选择性地耦合到RF PA负载的电子开关，以及适于输出动态DC的第二开关电源 电压到RF PA负载。 电力管理系统还包括控制系统，其适于关闭电子开关以在第一模式中向RF PA负载提供除了动态DC电压之外的相对恒定的DC电压，并且打开电子开关，其中相对恒定 在第二模式下，不向RF PA负载提供直流电压。

公开(公告)号：WO2011133542A1

公开(公告)日：2011-10-27

申请号：PCT/US2011/033037

申请日：2011-04-19

Applicant: RF MICRO DEVICES, INC.

Inventor： KHLAT, Nadim ,  KAY, Michael, R.

IPC: H03F1/02 ,  H02M3/07 ,  H03F3/189 ,  H03F3/24

CPC classification number: H03F1/0238 ,  H02M3/07 ,  H03F1/0244 ,  H03F1/025 ,  H03F3/189 ,  H03F3/19 ,  H03F3/21 ,  H03F3/24 ,  H03F2200/102 ,  H03F2200/375 ,  H03F2200/451 ,  H03F2200/555 ,  H03G3/004

Abstract: Embodiments disclosed in the detailed description relate to a pseudo-envelope follower power management system used to manage the power delivered to a linear RF power amplifier.

Abstract translation: 在详细描述中公开的实施例涉及用于管理传送到线性RF功率放大器的功率的伪包络跟随器功率管理系统。