公开(公告)号：US20130181521A1

公开(公告)日：2013-07-18

申请号：US13876518

申请日：2011-09-29

申请人： Nadim Khlat

发明人： Nadim Khlat

IPC分类号： H02M3/07

CPC分类号： H02M3/07 ,  H02M2001/009 ,  Y10T307/406

摘要： The detailed description described embodiments of highly efficient power management systems configurable to simultaneously generate various output voltage levels for different components, sub-assemblies, and devices of electronic devices, sub-systems, and systems. In particular, the described embodiments include power management systems that substantially reduce or eliminate the need for inductors, large numbers of capacitors, and complex switching techniques to transform an available voltage level from a system power source, such as a battery, to more desirable power supply voltages. Some described embodiments include a charge pump that uses only two flying capacitors to simultaneously generate multiple supply outputs, where each of the multiple supply outputs may provide either the same or a different output voltage level. The described embodiments also include efficient power management systems that flexibly provide highly accurate voltage levels that are substantially insensitive to the voltage level provided by a system power source, such as a battery.

摘要翻译： 详细描述描述了高效率电力管理系统的实施例，其可配置为同时为电子设备，子系统和系统的不同组件，子组件和设备生成各种输出电压电平。 特别地，所描述的实施例包括功率管理系统，其基本上减少或消除对电感器，大量电容器的需要，以及将来自诸如电池的系统电源的可用电压电平转换为更理想电力的复杂开关技术 电源电压。 一些描述的实施例包括仅使用两个飞行电容器同时产生多个电源输出的电荷泵，其中多个电源输出中的每一个可以提供相同或不同的输出电压电平。 所描述的实施例还包括有效的电力管理系统，其灵活地提供对由诸如电池的系统电源提供的电压电平基本上不敏感的高度准确的电压电平。

公开(公告)号：US20130034139A1

公开(公告)日：2013-02-07

申请号：US13367973

申请日：2012-02-07

申请人： Nadim Khlat ,  Karl Francis Horlander

发明人： Nadim Khlat ,  Karl Francis Horlander

IPC分类号： H04B17/00

CPC分类号： H03F1/0227 ,  H03F3/24 ,  H03F2200/411 ,  H03F2200/447 ,  H03F2200/465

摘要： An open loop envelope tracking system calibration technique and circuitry are proposed. A radio frequency power amplifier receives a modulated signal. An envelope tracker power converter generates a modulated power amplifier supply voltage for the radio frequency power amplifier based on a control signal derived from the modulated signal. A first output power and a second output power of the radio frequency power amplifier are measured when the control signal is respectively delayed by a first delay period and a second delay period. A sensitivity of the output power of the radio frequency power amplifier is near a maximum near the first delay period and the second delay period. The first delay period and/or the second delay period are adjusted until the first output power substantially equals the second output power. The first delay period and the second delay period are used to obtain a calibrated fine tuning delay offset.

摘要翻译： 提出了开环包络跟踪系统校准技术和电路。 射频功率放大器接收调制信号。 信封跟踪器功率转换器基于从调制信号导出的控制信号，为射频功率放大器生成调制功率放大器电源电压。 当控制信号分别延迟第一延迟周期和第二延迟周期时，测量射频功率放大器的第一输出功率和第二输出功率。 射频功率放大器的输出功率的灵敏度在第一延迟周期和第二延迟周期附近接近最大值。 第一延迟周期和/或第二延迟周期被调整直到第一输出功率基本上等于第二输出功率。 第一延迟周期和第二延迟周期用于获得经校准的微调延迟偏移。

公开(公告)号：US20130024142A1

公开(公告)日：2013-01-24

申请号：US13552768

申请日：2012-07-19

申请人： Andrew F. Folkmann ,  James M. Retz ,  Nadim Khlat ,  Jean-Frederic Chiron

发明人： Andrew F. Folkmann ,  James M. Retz ,  Nadim Khlat ,  Jean-Frederic Chiron

IPC分类号： G01R19/00 ,  G06F19/00 ,  G01R19/30 ,  G01R21/00

CPC分类号： H03F3/189 ,  H03F1/0222 ,  H03F2200/411

摘要： A method of defining a quasi iso-gain supply voltage function for an envelope tracking system is disclosed. The method includes a step of capturing iso-gain supply voltage values versus power values for a device under test (DUT). Other steps involve locating a minimum iso-gain supply voltage value, and then replacing the iso-gain supply voltage values with the minimum iso-gain supply voltage value for corresponding output power values that are less than an output power value corresponding to the minimum iso-gain supply voltage value. The method further includes a step of generating a look-up table (LUT) of iso-gain supply voltage values as a function of input power for the DUT after the step of replacing the iso-gain supply voltage values with the minimum iso-gain supply voltage value for corresponding output power values that are less than an output power value corresponding to the minimum iso-gain supply voltage value.

摘要翻译： 公开了一种定义用于包络跟踪系统的准等增益电源电压功能的方法。 该方法包括捕获等效增益电源电压值与被测器件（DUT）的功率值的步骤。 其他步骤包括定位最小等电位增益电源电压值，然后用对应于最小等效电流的输出功率值的相应输出功率值的最小等效增益电源电压值替换等增益电源电压值 - 电源电压值。 该方法还包括以下步骤：在以等于最小等效增益替换等增益电源电压值的步骤之后，产生作为DUT的输入功率的函数的等增益电源电压值的查找表（LUT） 对于相应的输出功率值的电源电压值小于对应于最小等
差增益电源电压值的输出功率值。

公开(公告)号：US08334729B1

公开(公告)日：2012-12-18

申请号：US12727530

申请日：2010-03-19

申请人： Nadim Khlat

发明人： Nadim Khlat

IPC分类号： H03H7/38

CPC分类号： H03H7/38 ,  H03H2007/006

摘要： An antenna tuner has a plurality of switch-capacitor branches made up of a micro-electromechanical systems (MEMS) switch in series with a capacitor such that a branch node is formed between the MEMS switch and the capacitor. A plurality of electronic switches is included wherein the branch node of each of the plurality of switch-capacitor branches is coupled to at least one other branch node of the plurality of switch-capacitor branches with a corresponding one of the plurality of electronic switches. A hot switching sequencing method uses a closed one of the plurality MEMS switch along with one or more of the plurality of electronic switches to reduce the voltage potential across another one of the plurality of MEMS switches that is about to undergo a change of state such as from open to closed or vice versa.

摘要翻译： 天线调谐器具有由与电容器串联的微机电系统（MEMS）开关构成的多个开关电容器分支，使得在MEMS开关和电容器之间形成分支节点。 包括多个电子开关，其中多个开关电容器分支中的每一个的分支节点与多个开关电容器分支中的至少一个其他分支节点与多个电子开关中的相应一个耦合。 热切换排序方法使用多个MEMS开关中的闭合的一个以及多个电子开关中的一个或多个，以减少将要经历状态改变的多个MEMS开关中的另一个的电压电势，例如 从开放到关闭，反之亦然。

公开(公告)号：US20120281597A1

公开(公告)日：2012-11-08

申请号：US13460861

申请日：2012-05-01

申请人： Nadim Khlat ,  Alexander Wayne Hietala

发明人： Nadim Khlat ,  Alexander Wayne Hietala

IPC分类号： H04W88/02 ,  H04B7/00

CPC分类号： H04B1/0067 ,  H03F1/02 ,  H03F1/0227 ,  H03F3/24 ,  H03F3/68 ,  H03F3/72 ,  H03F2203/7209 ,  H03F2203/7221 ,  H04B2001/045 ,  H04L5/001

摘要： A front end radio architecture (FERA) with power management is disclosed. The FERA includes a first power amplifier (PA) block having a first-first PA and a first-second PA, and a second PA block having a second-first PA and a second-second PA. First and second modulated switchers are adapted to selectively supply power to the first-first PA and the second-first PA, and to supply power to the first-second PA and the second-second PA, respectively. The first and second modulated switchers have a modulation bandwidth of at least 20 MHz and are both suitable for envelope tracking modulation. A control system is adapted to selectively enable and disable the first-first PA, first-second PA, the second-first PA, and the second-second PA. First and second switches are responsive to control signals to route carriers and received signals between first and second antennas depending upon a selectable mode of operation such as intra-band or inter-band operation.

摘要翻译： 公开了具有电源管理的前端无线电架构（FERA）。 FERA包括具有第一第一PA和第一秒PA的第一功率放大器（PA）块和具有第二第一PA和第二秒PA的第二PA块。 第一和第二调制切换器适于选择性地向第一优先PA和第二第一PA供电，并分别向第一秒PA和第二秒PA供电。 第一和第二调制切换器具有至少20MHz的调制带宽，并且都适用于包络跟踪调制。 控制系统适于选择性地启用和禁用第一优先PA，第一秒PA，第二优先PA和第二秒PA。 第一和第二开关响应于控制信号以根据诸如带内或频带间操作的可选择的操作模式在第一和第二天线之间路由载波和接收信号。

公开(公告)号：US08275330B1

公开(公告)日：2012-09-25

申请号：US12895255

申请日：2010-09-30

申请人： Nadim Khlat ,  Alexander Wayne Hietala

发明人： Nadim Khlat ,  Alexander Wayne Hietala

IPC分类号： H04B1/04

CPC分类号： H04B1/0475

摘要： The present disclosure relates to IQ modulation circuitry that during a data burst mode, modulates an RF carrier signal to provide a modulated RF signal, which is used for transmission of a transmit slot. During the data burst mode, a maximum energy spectrum peak of the modulated RF signal is about coincident with an RF carrier frequency of the RF carrier signal to comply with communications protocols. Further, during an energy-shifted ramp-down mode, which is coincident with ramp-down of the modulated RF signal, the IQ modulation circuitry modulates the RF carrier signal to provide the modulated RF signal. During the energy-shifted ramp-down mode, the maximum energy spectrum peak of the modulated RF signal is shifted away from the RF carrier frequency of the RF carrier signal to mitigate the effects of preparing for receiving an RF receive signal.

摘要翻译： 本公开涉及IQ调制电路，其在数据突发模式期间，调制RF载波信号以提供用于传输发射时隙的调制RF信号。 在数据突发模式期间，调制的RF信号的最大能谱峰值与RF载波信号的RF载波频率大致一致，以符合通信协议。 此外，在与调制的RF信号的斜降一致的能量偏移斜降模式期间，IQ调制电路调制RF载波信号以提供经调制的RF信号。 在能量偏移斜降模式期间，调制的RF信号的最大能谱峰值偏离RF载波信号的RF载波频率，以减轻准备接收RF接收信号的影响。

公开(公告)号：US20120094623A1

公开(公告)日：2012-04-19

申请号：US13171897

申请日：2011-06-29

申请人： Nadim Khlat ,  Marcus Granger-Jones

发明人： Nadim Khlat ,  Marcus Granger-Jones

IPC分类号： H04B1/18

CPC分类号： H04B1/18

摘要： An antenna tuner unit (ATU) that provides broadband tuning is disclosed. The disclosed ATU includes a radio frequency (RF) switch circuit having an N number of switch inputs, wherein N is a natural number equal to 2 or greater. An N number of reactance elements are coupled in series between an RF input and one of the N number of switch inputs. Taps between adjacent pairs of the N number of reactance elements, wherein each of the taps is coupled to a corresponding one of the N number of switch inputs. The ATU further includes a capacitive element for each of the taps, wherein each capacitive element is coupled between a corresponding one of the taps and a voltage node. In at least one embodiment, each of the capacitive elements is made up of a programmable capacitor array.

摘要翻译： 公开了提供宽带调谐的天线调谐器单元（ATU）。 所公开的ATU包括具有N个开关输入的射频（RF）开关电路，其中N是等于2或更大的自然数。 N个电抗元件在RF输入和N个开关输入中的一个之间串联耦合。 在N个电抗元件的相邻对之间的抽头，其中每个抽头耦合到N个开关输入中的对应的一个。 ATU还包括用于每个抽头的电容元件，其中每个电容元件耦合在相应的一个抽头和电压节点之间。 在至少一个实施例中，每个电容元件由可编程电容器阵列组成。

公开(公告)号：US08139540B2

公开(公告)日：2012-03-20

申请号：US11571099

申请日：2004-07-02

申请人： Nadim Khlat ,  David Myara

发明人： Nadim Khlat ,  David Myara

IPC分类号： H04W36/00 ,  H04B7/216

CPC分类号： H04W88/06

摘要： An arrangement and method for discontinuous software FDD monitoring during TDD call allows removal of a conventional external notch filter in a dual mode WCDMA and PCS/DCS handset. The WCDMA RX frame is allowed to have a few slots corrupted by the PCS/DCS transmitter noise during DCS transmission, and a scheme is used to recover the required information by not considering the corrupted slots. Due to the fact that during WCDMA FDD RX monitoring, the processing required is performed in stages, and since the information that is measured during a WCDMA frame is repeated in every frame, the scheme of the invention is based on the idea that if a given slot is corrupted in a WCDMA frame, in the next WCDMA frame the slot will be no more corrupted due to the difference in timing between the PCS/DCS transmitter protocol and the WCDMA timing protocol.

摘要翻译： 在TDD呼叫期间用于不连续软件FDD监视的布置和方法允许在双模WCDMA和PCS / DCS手机中去除传统的外部陷波滤波器。 在DCS传输期间，允许WCDMA RX帧具有被PCS / DCS发射机噪声损坏的几个时隙，并且使用一种方案来通过不考虑损坏的时隙来恢复所需的信息。 由于在WCDMA FDD RX监视期间，所需的处理是分阶段执行的，并且由于在每帧中重复在WCDMA帧期间测量的信息，所以本发明的方案基于以下思想：如果给定 时隙在WCDMA帧中被破坏，在下一个WCDMA帧中，由于PCS / DCS发射机协议和WCDMA定时协议之间的定时差异，该时隙将不再被破坏。

公开(公告)号：US08064863B1

公开(公告)日：2011-11-22

申请号：US12371018

申请日：2009-02-13

申请人： David Reed ,  Nadim Khlat

发明人： David Reed ,  Nadim Khlat

IPC分类号： H04B1/18 ,  H04B1/10

CPC分类号： H04B1/30

摘要： The present invention relates to image rejection calibration in a radio frequency (RF) receiver. In one embodiment, the receiver includes a receiver front-end and an image rejection calibration system. The image rejection calibration system provides a first test signal to an RF input of the receiver front-end, and obtains first measurements of a quadrature output signal output from the receiver front-end while the first test signal is applied to the RF input. The image rejection calibration system then applies a second test signal to the RF input of the receiver front-end that is approximately 90 degrees out-of-phase with the first test signal, and obtains second measurements of the quadrature output signal while the second test signal is applied to the RF input. Based on the first and second measurements, the image rejection calibration system determines an amplitude error and a phase error of the receiver front-end.

摘要翻译： 本发明涉及射频（RF）接收机中的镜像抑制校准。 在一个实施例中，接收机包括接收机前端和镜像抑制校准系统。 图像抑制校准系统向接收机前端的RF输入提供第一测试信号，并且在将第一测试信号施加到RF输入端时获得从接收机前端输出的正交输出信号的第一测量值。 然后，图像抑制校准系统将第二测试信号施加到与第一测试信号相差大约90度的接收器前端的RF输入端，并且在第二测试期间获得正交输出信号的第二测量值 信号被施加到RF输入。 基于第一和第二测量，图像抑制校准系统确定接收机前端的振幅误差和相位误差。

公开(公告)号：US08005441B1

公开(公告)日：2011-08-23

申请号：US12117269

申请日：2008-05-08

申请人： Nadim Khlat ,  David Myara

发明人： Nadim Khlat ,  David Myara

IPC分类号： H04B1/04 ,  H01Q11/12

CPC分类号： H03G3/3042 ,  H04B2001/0416

摘要： The present invention relates to estimating a direct current (DC) offset of a power detection circuit when an estimated instantaneous amplitude of a continuous-transmission amplitude-modulated (AM) radio frequency (RF) signal is below a first threshold. The power detection circuit may be used to estimate an average output power associated with the continuous-transmission AM RF signal. The estimated average output power may be used as part of a feedback system to regulate the average output power. The estimated DC offset of the power detection circuit may be used to improve the estimate of the average output power, particularly over temperature and supply voltage variations. Estimating the DC offset of the power detection circuit when the estimated instantaneous amplitude of the continuous-transmission AM RF signal is below the first threshold may minimize errors in the estimated DC offset.

摘要翻译： 本发明涉及当连续发射幅度调制（AM）射频（RF）信号的估计瞬时幅度低于第一阈值时估计功率检测电路的直流偏移。 功率检测电路可以用于估计与连续发送AM RF信号相关联的平均输出功率。 估计的平均输出功率可以用作反馈系统的一部分，以调节平均输出功率。 功率检测电路的估计的DC偏移可以用于改善平均输出功率的估计，特别是在温度和电源电压变化方面。 当估计的连续发送AM RF信号的瞬时幅度低于第一阈值时，估计功率检测电路的DC偏移可以使估计的DC偏移中的误差最小化。