公开(公告)号：US08552816B2

公开(公告)日：2013-10-08

申请号：US12969867

申请日：2010-12-16

申请人： Nadim Khlat

发明人： Nadim Khlat

IPC分类号： H03H7/46 ,  H04B1/44 ,  H04B1/50 ,  H04B7/00 ,  H04M1/00

CPC分类号： H04B1/406

摘要： 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 vice versa.

摘要翻译： 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设备和适于通过的接收（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），反之亦然。

公开(公告)号：US08532595B1

公开(公告)日：2013-09-10

申请号：US12749091

申请日：2010-03-29

申请人： Nadim Khlat ,  Roman Zbigniew Arkiszewski

发明人： Nadim Khlat ,  Roman Zbigniew Arkiszewski

IPC分类号： H04B1/04

CPC分类号： H03F1/0238 ,  H04B7/06 ,  H04W52/42 ,  H04W52/52

摘要： The present disclosure relates to a single switching power supply that may either provide envelope power to a first RF power amplifier during a first operating mode, or simultaneously provide envelope power to the first RF power amplifier and to a second RF power amplifier during a second operating mode. In one embodiment, the single switching power supply and the first and second RF power amplifiers may be used in a multiple-input multiple-output (MIMO) RF communications system. As such, during the first operating mode, the first RF power amplifier may transmit a first RF output signal to a first antenna, and during the second operating mode, the first RF power amplifier may transmit the first RF output signal to the first antenna and the second RF power amplifier may transmit a second RF output signal to a second antenna, which may provide diversity.

摘要翻译： 本公开涉及单个开关电源，其可以在第一操作模式期间向第一RF功率放大器提供包络功率，或者在第二操作期间向第一RF功率放大器和第二RF功率放大器同时提供包络功率 模式。 在一个实施例中，单个开关电源和第一和第二RF功率放大器可以用在多输入多输出（MIMO）RF通信系统中。 因此，在第一操作模式期间，第一RF功率放大器可以将第一RF输出信号发送到第一天线，并且在第二操作模式期间，第一RF功率放大器可以将第一RF输出信号发送到第一天线， 第二RF功率放大器可以将第二RF输出信号发送到可以提供分集的第二天线。

公开(公告)号：US08519788B2

公开(公告)日：2013-08-27

申请号：US13218400

申请日：2011-08-25

申请人： Nadim Khlat

发明人： Nadim Khlat

IPC分类号： H03G3/00

CPC分类号： H02M3/07 ,  H02M3/158 ,  H03F1/0227 ,  H03F3/189 ,  H03F3/24 ,  H03F2200/432

摘要： 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 charge pump 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.

摘要翻译： 在详细描述中公开的实施例涉及一种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。 伪包络跟随器电源管理系统可以包括协作地耦合以向线性RF功率放大器提供线性RF功率放大器电源的开关模式电源转换器和并联放大器。 伪包络跟随器电力管理系统可以包括被配置为对并行放大器供电的电荷泵。 电荷泵可以产生多个输出电压电平。 电荷泵可以是升压电荷泵或升压/降压电荷泵。 伪包络跟随器功率管理系统可以包括偏移电压控制电路，其被配置为向开关模式电源转换器提供反馈以调节跨耦合器件产生的偏移电压，该耦合器件将并联放大器的输出耦合到线性RF功率放大器 供应。

公开(公告)号：US20130162352A1

公开(公告)日：2013-06-27

申请号：US13531719

申请日：2012-06-25

申请人： Nadim Khlat

发明人： Nadim Khlat

IPC分类号： H03F3/21 ,  H03F3/45 ,  H03F3/193

CPC分类号： H03F3/21 ,  H03F1/0227 ,  H03F3/193 ,  H03F3/211 ,  H03F3/45071 ,  H03F2200/459 ,  H03F2200/537

摘要： Embodiments of the present disclosure relate to radio frequency (RF) transmitter circuitry, which includes non-inverting path power amplifier (PA) circuitry, inverting path PA circuitry, and RF transformer circuitry. The non-inverting path PA circuitry provides a non-inverting RF signal and a first power supply (PS) signal to the RF transformer circuitry, such that the first PS signal has a first ripple voltage. The inverting path PA circuitry provides an inverting RF signal and a second PS signal to the RF transformer circuitry, such that the second PS signal has a second ripple voltage. The RF transformer circuitry additively combines the non-inverting RF signal and the inverting RF signal to provide an RF output signal, such that effects of the first ripple voltage and the second ripple voltage are substantially cancelled from the RF output signal.

摘要翻译： 本公开的实施例涉及射频（RF）发射机电路，其包括非反相路径功率放大器（PA）电路，反相路径PA电路和RF变压器电路。 非反相路径PA电路向RF变压器电路提供非反相RF信号和第一电源（PS）信号，使得第一PS信号具有第一纹波电压。 反相路径PA电路向RF变压器电路提供反相RF信号和第二PS信号，使得第二PS信号具有第二纹波电压。 RF变压器电路将非反相RF信号和反相RF信号相加地组合以提供RF输出信号，使得第一纹波电压和第二纹波电压的影响从RF输出信号基本上消除。

公开(公告)号：US08401500B1

公开(公告)日：2013-03-19

申请号：US12706544

申请日：2010-02-16

申请人： Ruediger Bauder ,  Nadim Khlat ,  Edward T. Spears ,  Jean-Frederic Chiron ,  Philippe Gorisse

发明人： Ruediger Bauder ,  Nadim Khlat ,  Edward T. Spears ,  Jean-Frederic Chiron ,  Philippe Gorisse

IPC分类号： H01Q11/12 ,  H04K3/00

CPC分类号： G06F1/26 ,  H04K3/00 ,  H04K2203/30

摘要： The present disclosure relates to an RF power amplifier (PA) power supply that includes a series pass circuit coupled across a direct current (DC)-to-DC converter to receive a power supply input signal, such as provided from a battery, to provide a power supply output signal to at least a first RF PA based on an output setpoint. Control circuitry selects between a switching supply operating mode and a non-switching supply operating mode based on the output setpoint. During the switching supply operating mode, the DC-to-DC converter provides the power supply output signal and during the non-switching supply operating mode, the series pass circuit provides the power supply output signal.

摘要翻译： 本公开涉及一种RF功率放大器（PA）电源，其包括跨直流（DC）至DC转换器耦合的串联传递电路，以接收诸如由电池提供的电源输入信号，以提供 基于输出设定点至少至少第一RF PA的电源输出信号。 控制电路根据输出设定值在开关电源工作模式和非开关电源工作模式之间进行选择。 在开关电源工作模式期间，DC-DC转换器提供电源输出信号，在非开关电源工作模式期间，串联电路提供电源输出信号。

公开(公告)号：US20120313701A1

公开(公告)日：2012-12-13

申请号：US13316229

申请日：2011-12-09

申请人： Nadim Khlat ,  Michael R. Kay ,  Philippe Gorisse

发明人： Nadim Khlat ,  Michael R. Kay ,  Philippe Gorisse

IPC分类号： H03G1/00

CPC分类号： H03F1/025 ,  H02M3/07 ,  H03F1/0244 ,  H03F1/0277 ,  H03F1/42 ,  H03F3/195 ,  H03F3/245 ,  H03F3/3022 ,  H03F3/45475 ,  H03F3/505 ,  H03F3/72 ,  H03F2200/102 ,  H03F2200/204 ,  H03F2200/36 ,  H03F2200/375 ,  H03F2200/451 ,  H03F2200/555 ,  H03F2200/78 ,  H03F2203/45526 ,  H03F2203/45544 ,  H03F2203/45594 ,  H03F2203/45694 ,  H03F2203/45712 ,  H03F2203/45718 ,  H03F2203/7221

摘要： Embodiments disclosed in the detailed description relate to a pseudo-envelope follower power management system including a parallel amplifier and a switch mode power supply converter cooperatively coupled to generate a power supply voltage at a power supply output coupled to a linear RF power amplifier. The parallel amplifier output is in communication with the power amplifier supply output. The parallel amplifier governs operation of the switch mode power supply converter and regulates the power amplifier supply voltage base on a VRAMP signal. The parallel amplifier circuit includes an open loop high frequency compensation assist circuit that generates a high frequency ripple compensation current based on an estimate of the high frequency ripple currents contained in a ripple current of the power inductor. The high frequency ripple compensation current is injected into the parallel amplifier circuit output to cancel out high frequency ripple currents at the power amplifier supply output.

摘要翻译： 在详细描述中公开的实施例涉及一种伪包络跟随器功率管理系统，其包括协同耦合以在耦合到线性RF功率放大器的电源输出处产生电源电压的并联放大器和开关模式电源转换器。 并联放大器输出与功率放大器电源输出通信。 并联放大器控制开关模式电源转换器的工作，并根据VRAMP信号调节功率放大器电源电压。 并联放大器电路包括开环高频补偿辅助电路，其基于包含在功率电感器的纹波电流中的高频纹波电流的估计来产生高频纹波补偿电流。 高频纹波补偿电流注入到并行放大器电路输出端，以消除功率放大器电源输出端的高频纹波电流。

公开(公告)号：US20120306572A1

公开(公告)日：2012-12-06

申请号：US13486012

申请日：2012-06-01

申请人： Alexander Wayne Hietala ,  Nadim Khlat

发明人： Alexander Wayne Hietala ,  Nadim Khlat

IPC分类号： H03G3/20

CPC分类号： H03F1/32 ,  H03F1/0222

摘要： A method for power amplifier (PA) calibration for an envelope tracking system of a wireless device is disclosed. The method involves measuring an output power of a PA that is a part under test (PUT) at a predetermined input power. Another step includes calculating a gain equal to the output power of the PA divided by the predetermined input power. A next step involves calculating a gain correction by subtracting the calculated gain from a desired gain. Other steps include determining an expected supply voltage for the PA at the desired gain using the gain correction applied to a nominal curve of gain versus PA supply voltage, and then storing the expected supply voltage for the PA versus input power in memory.

摘要翻译： 公开了一种用于无线设备的包络跟踪系统的功率放大器（PA）校准方法。 该方法包括以预定输入功率测量作为被测部件（PUT）的PA的输出功率。 另一步骤包括计算等于PA的输出功率除以预定输入功率的增益。 下一步涉及通过从期望的增益中减去所计算的增益来计算增益校正。 其他步骤包括使用增益校正应用于增益对PA电源电压的增益校正来确定期望增益的PA的预期电源电压，然后将PA的预期电源电压与输入功率存储在存储器中。

公开(公告)号：US08189717B2

公开(公告)日：2012-05-29

申请号：US12705836

申请日：2010-02-15

申请人： Nadim Khlat ,  Conor O'Keefe ,  Patrick J. Pratt

发明人： Nadim Khlat ,  Conor O'Keefe ,  Patrick J. Pratt

IPC分类号： H03K9/00 ,  H04L27/00

CPC分类号： H03D7/166 ,  H03D3/002 ,  H03D2200/0078 ,  H03D2200/0082

摘要： A slot-based radio signal at a carrier frequency is received, the radio signal including successive frames, each frame including a set of reception time slots, to producing an input signal. A local oscillator signal is produced, In-phase and Quadrature components having a local oscillator frequency. The input signal is mixed with the local oscillator signal and Intermediate Frequency signal In-phase and Quadrature components are produced. The local oscillator frequency of the local oscillator signal changes relative to the carrier frequency of the input signal multiple times during the reception time slots of each of the frames between two frequency values. One frequency is greater and the other frequency is smaller than the carrier frequency. Frequencies of Intermediate Frequency components are selectively passed within a low Intermediate Frequency range and frequencies outside said low Intermediate Frequency range are rejected so as to produce filtered signal components.

摘要翻译： 接收载波频率的基于时隙的无线电信号，该无线电信号包括连续帧，每帧包括一组接收时隙，以产生输入信号。 产生本地振荡器信号，具有本地振荡器频率的同相和正交分量。 输入信号与本地振荡器信号混合，产生中频信号同相和正交分量。 在两个频率值之间的每个帧的接收时隙期间，本地振荡器信号的本地振荡器频率相对于输入信号的载波频率多次改变。 一个频率较大，另一个频率小于载波频率。 中频分量的频率在低中频范围内选择性地通过，并且拒绝所述低中频范围外的频率，以产生滤波信号分量。

公开(公告)号：US20120121039A1

公开(公告)日：2012-05-17

申请号：US13297490

申请日：2011-11-16

申请人： David Myara ,  Nadim Khlat ,  Jeremie Rafin

发明人： David Myara ,  Nadim Khlat ,  Jeremie Rafin

IPC分类号： H04L25/49 ,  G06F17/16

CPC分类号： G06F7/556 ,  G06F1/0307 ,  H03F1/0227 ,  H03M7/04

摘要： 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.

摘要翻译： 公开了具有选择第一部件或第二部件中较大者的最大值电路的坐标旋转数字计算机（CORDIC）。 最小值电路选择作为第一分量或第二​​分量中较小的一个的最小操作数。 还包括N个旋转器级，每个对应于N个预定向量中的唯一一个，N个旋转器级中的每一个具有第一乘法电路，以将最大操作数乘以预定向量的余弦系数，以输出第一旋转分量， 第二乘法电路，用于将最小操作数乘以预定向量的正弦系数以输出第二旋转分量;以及加法器电路，用于将第一旋转分量与第二旋转分量相加以输出N个结果中的一个，以及最大值电路 用于输出N个结果中的最大值。

公开(公告)号：US08159309B1

公开(公告)日：2012-04-17

申请号：US12822848

申请日：2010-06-24

申请人： Nadim Khlat ,  David Reed

发明人： Nadim Khlat ,  David Reed

IPC分类号： H03C1/02 ,  H03C1/06 ,  H03C3/02 ,  H03C3/08

CPC分类号： H01M10/0525 ,  C07C307/02 ,  C07C311/48 ,  H01M6/164 ,  H01M10/0567 ,  H01M10/0569 ,  H01M2300/0034

摘要： The present disclosure relates to using windowing to reduce the bandwidth of an amplitude modulation (AM) power supply input signal (PSIS), which is fed to an AM power supply to provide envelope power to an RF power amplifier stage via an AM power supply output signal. By reducing the bandwidth, noise levels from the AM power supply may be reduced. However, although the bandwidth of the AM PSIS is reduced, the AM power supply output signal may track the AM of the RF power amplifier stage closely enough to meet linearity requirements and to provide high efficiency. The windowing may be based on dividing a stream of AM input samples into a stream of input windows, from which a stream of output windows is created to provide a stream of windowed AM input samples that are used to provide a windowed AM PSIS to the AM power supply.

摘要翻译： 本公开涉及使用窗口来降低幅度调制（AM）电源输入信号（PSIS）的带宽，其被馈送到AM电源以经由AM电源输出向RF功率放大器级提供包络功率 信号。 通过降低带宽，AM电源的噪声水平可能会降低。 然而，尽管AM PSIS的带宽减小，AM电源输出信号可以跟踪RF功率放大器级的AM足够紧密以满足线性要求并提供高效率。 窗口可以基于将AM输入样本流划分成输入窗口流，从该流输入窗口的流被创建以提供用于向AM提供窗口AM PSIS的窗口AM输入样本流 电源。