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。

公开(公告)号：US08085754B1

公开(公告)日：2011-12-27

申请号：US13071139

申请日：2011-03-24

申请人： Nadim Khlat ,  David Myara ,  Jeremie Rafin

发明人： Nadim Khlat ,  David Myara ,  Jeremie Rafin

IPC分类号： G06F17/00

CPC分类号： H04B1/7073 ,  H04J3/0685 ,  H04W56/0045

摘要： The present invention relates to synchronization circuitry that is used to synchronize an asynchronous received RF message with a transmitted RF message. In one embodiment of the present invention, the synchronization circuitry includes at least one counter, which is used to associate timing of the asynchronous received RF message with a receive count value, and associate timing of the transmitted RF message with a transmit count value. A time delay between occurrence of the receive count value and the transmit count value provides accurate timing for the start of the transmitted RF message.

公开(公告)号：US20110222443A1

公开(公告)日：2011-09-15

申请号：US13045604

申请日：2011-03-11

申请人： Nadim Khlat

发明人： Nadim Khlat

IPC分类号： H04W88/02 ,  H04W4/00 ,  H03F3/45

CPC分类号： H03F3/24 ,  H03F3/189 ,  H03F3/211 ,  H03F3/68 ,  H03F2200/222 ,  H03F2200/249 ,  H03F2200/318 ,  H03F2200/387 ,  H03F2200/411 ,  H03F2200/451 ,  H03F2200/534 ,  H03F2200/537 ,  H03F2200/541 ,  H03F2200/81

摘要： A front end radio architecture (FERA) is disclosed that includes a power amplifier (PA). The PA includes first and second input terminals and first and second output terminals and a PA die having first and second half amplifier cells, each of which includes an output amplifier stage. The first and second half amplifier cells are coupled to the first and second input terminals. First and second PA transformers each include first, second, and third windings. The first windings are coupled to the output amplifier stages. The second winding of the first PA transformer is coupled to the first output terminal of the PA and also coupled in series with the second winding of the second PA transformer. The third winding of the first PA transformer is coupled in series with the third winding of the second PA transformer, with one end of the second PA transformer being coupled to the second output terminal of the PA.

摘要翻译： 公开了一种包括功率放大器（PA）的前端无线电架构（FERA）。 PA包括第一和第二输入端子以及第一和第二输出端子以及具有第一和第二半放大器单元的PA管芯，每个具有输出放大器级。 第一和第二半放大器单元耦合到第一和第二输入端。 第一和第二PA变压器各自包括第一，第二和第三绕组。 第一绕组耦合到输出放大器级。 第一PA变压器的第二绕组耦合到PA的第一输出端并与第二PA变压器的第二绕组串联耦合。 第一PA变压器的第三绕组与第二PA变压器的第三绕组串联耦合，第二PA变压器的一端耦合到PA的第二输出端。

公开(公告)号：US08020026B1

公开(公告)日：2011-09-13

申请号：US12040115

申请日：2008-02-29

申请人： Nadim Khlat ,  Navid Foroudi

发明人： Nadim Khlat ,  Navid Foroudi

IPC分类号： G06F1/04 ,  G06F1/24 ,  G06F11/00

CPC分类号： G06F1/06 ,  G06F1/08

摘要： The present invention relates to providing a system clock signal that is based on either a first clock signal that is capable of being frequency-corrected or a second clock signal that is not capable of being frequency-corrected, depending on system needs. When the system clock signal is based on the second clock signal, all or part of the circuitry that provides the first clock signal may be disabled or powered-down to reduce power consumption. A multiplexer may be used to select either the first or the second clock signal to provide the system clock signal to system circuitry. The system circuitry may be intolerant of phase-jumps in the system clock signal; therefore, before the multiplexer transitions between the first and the second clock signals, the first clock signal may be phase-adjusted to bring it into phase-alignment with the second clock signal.

摘要翻译： 本发明涉及提供一种系统时钟信号，该系统时钟信号基于能够进行频率校正的第一时钟信号或不能被频率校正的第二时钟信号，这取决于系统需要。 当系统时钟信号基于第二时钟信号时，提供第一时钟信号的电路的全部或部分可被禁用或断电以降低功耗。 可以使用多路复用器来选择第一或第二时钟信号以向系统电路提供系统时钟信号。 系统电路可能不耐受系统时钟信号中的相位跳变; 因此，在多路复用器在第一和第二时钟信号之间转换之前，第一时钟信号可以被相位调整以使其与第二时钟信号相对准。

公开(公告)号：US20110204962A1

公开(公告)日：2011-08-25

申请号：US13013986

申请日：2011-01-26

申请人： Philippe Gorisse ,  Nadim Khlat

发明人： Philippe Gorisse ,  Nadim Khlat

IPC分类号： G05F1/10

CPC分类号： H02M3/07 ,  H02M2003/072

摘要： A charge pump includes an input, an output, and a fixed voltage node; a first capacitor and at least a second capacitor; and a plurality of switches adapted to selectively couple the first capacitor and the at least the second capacitor to the input, the output, and the fixed voltage node. A switch controller is adapted to switch the plurality of switches in response to at least three phase signals to provide fixed gains. A phase generator is adapted to generate the at least three phase signals, wherein at least one of the at least three phase signals has a duty cycle that is different from at least one other of the at least three phase signals. The phase generator is also adapted to adjust the frequency of a clock signal used to generate the at least three phase signals so that a minimum switching frequency is provided.

摘要翻译： 电荷泵包括输入，输出和固定电压节点; 第一电容器和至少第二电容器; 以及多个开关，适于将第一电容器和至少第二电容器选择性地耦合到输入端，输出端和固定电压节点。 开关控制器适于响应于至少三个相位信号切换多个开关以提供固定增益。 相位发生器适于产生至少三个相位信号，其中至少三个相位信号中的至少一个具有不同于至少三个相位信号中的至少另一个的占空比。 相位发生器还适于调整用于产生至少三个相位信号的时钟信号的频率，从而提供最小的开关频率。

公开(公告)号：US07884681B1

公开(公告)日：2011-02-08

申请号：US12112006

申请日：2008-04-30

申请人： Nadim Khlat ,  Ruediger Bauder ,  David Reed ,  Baker P. Scott

发明人： Nadim Khlat ,  Ruediger Bauder ,  David Reed ,  Baker P. Scott

IPC分类号： H03C1/00 ,  H03C1/02 ,  H03C1/06

CPC分类号： H03C1/06 ,  H03C1/36 ,  H03C2200/0083

摘要： Embodiments of the present invention include amplitude-modulated or polar-modulated radio frequency (RF) power amplifier circuitry, in which an envelope power supply input to an RF power amplifier is powered by a pre-distorted amplitude modulation (AM) power supply. The pre-distorted AM power supply receives an AM signal, which is then pre-distorted and amplified to provide an AM power supply signal to the RF power amplifier. The pre-distortion of the AM signal is used to improve the linearity, the efficiency, or both, of the RF power amplifier. The pre-distortion provides a feed-forward system, which may allow use of a reduced bandwidth pre-distorted AM signal to an AM power supply and a reduced bandwidth AM power supply, which may increase efficiency.

摘要翻译： 本发明的实施例包括幅度调制或极调制的射频（RF）功率放大器电路，其中向RF功率放大器输入的包络电源由预失真的幅度调制（AM）电源供电。 预失真的AM电源接收AM信号，然后将其预失真和放大，以向RF功率放大器提供AM电源信号。 AM信号的预失真用于提高RF功率放大器的线性度，效率或两者。 预失真提供前馈系统，其可以允许对AM电源使用减少带宽的预失真AM信号以及降低带宽的AM电源，这可以提高效率。

公开(公告)号：US20090103489A1

公开(公告)日：2009-04-23

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：US07158578B2

公开(公告)日：2007-01-02

申请号：US10451094

申请日：2001-10-08

申请人： Nadim Khlat

发明人： Nadim Khlat

IPC分类号： H04L5/12 ,  H03H7/40

CPC分类号： H04L25/03834

摘要： An IQ modulator and method for modulating a signal in accordance with I and Q symbols using derivative FIR's operating at the symbol rate and programmable multi-accumulators for waveform generator.This provides advantages that reduced complexity is produced compared with traditional FIR's by a factor equal to the quotient of oversampling ratio and derivative order; programmability to Digital Very Low IF mode transmission is possible; the same circuit may perform interpolation for narrow band MA's; and reduced sets of coefficients enable implementation of two sets of coefficients for MA's, allowing fast handover between MA's such as EDGE and IS136.

摘要翻译： 一种IQ调制器和方法，用于根据I和Q符号使用以符号速率操作的导数FIR和用于波形发生器的可编程多累加器来调制信号。 这提供了与传统FIR相比降低复杂度的优点，其等同于过采样比和导数阶的商; 数字极低IF模式传输的可编程性是可能的; 相同的电路可以对窄带MA进行内插; 并且减少的系数集合使得能够实现MA的两组系数，允许MA之间的快速切换，例如EDGE和IS136。

公开(公告)号：US20060284741A1

公开(公告)日：2006-12-21

申请号：US10557431

申请日：2004-06-30

申请人： Nadim Khlat

发明人： Nadim Khlat

IPC分类号： H03M11/00 ,  H03K17/94

CPC分类号： H03M11/22 ,  G06F3/0338 ,  G06F3/045 ,  H01H2221/012 ,  H01H2225/018 ,  H01H2239/012 ,  H03M11/24

摘要： Keypad apparatus for registering signals corresponding to data that a user enters by pressure on keys of an array in a surface extending in two dimensions. The elements of first and second sets of impedance elements (R) are connected in series through respective interconnections and a signal processor applies first and second reference signals across the first and second sets of impedance elements respectively. User pressure on the keys makes or breaks connections through corresponding contact elements between a respective pair of the interconnections, one from the first set of impedance elements and one from the second set of impedance elements, so as to generate first and second output signals (PX1, PY1) that together are a corresponding combination of the first and second reference signals that is unique to the actuated key elements.

摘要翻译： 键盘装置，用于登记与用户通过压力输入的数据相对应的信号，所述数据在二维上延伸的表面中的阵列的键上。 第一组和第二组阻抗元件（R）的元件通过相应的互连串联连接，信号处理器分别跨越第一和第二组阻抗元件施加第一和第二参考信号。 键上的用户压力通过相应的一对互连之间的相应接触元件进行或断开连接，一个来自第一组阻抗元件和一个来自第二组阻抗元件，从而产生第一和第二输出信号（PX 1，PY 1），它们一起是第一和第二参考信号对于被致动的关键元件唯一的相应组合。

公开(公告)号：US20060239380A1

公开(公告)日：2006-10-26

申请号：US11113873

申请日：2005-04-25

申请人： Nadim Khlat ,  Ruediger Bauder

发明人： Nadim Khlat ,  Ruediger Bauder

IPC分类号： H04L25/49

CPC分类号： H04L27/362 ,  H03F1/0205 ,  H03F3/24 ,  H03F2200/102 ,  H03F2200/451 ,  H03G3/3042 ,  H04W52/52

摘要： Power control circuitry is provided for controlling an output power of a transmitter of a mobile terminal operating according to a continuous time transmit scheme such as Wideband Code Division Multiple Access (WCDMA). Transmit circuitry processes a quadrature baseband signal to provide a radio frequency transmit signal. The radio frequency transmit signal is coupled to the power control circuitry via a coupler and processed to provide a feedback amplitude signal. The power control circuitry operates to remove an amplitude modulation component from the feedback signal using a reference amplitude signal generated from the quadrature baseband signal, thereby providing a measured gain signal of the transmit circuitry. Based on the measured gain signal and a target output power, the power control circuitry operates to control a gain of the transmit circuitry such that the output power of the transmit circuitry is within a predetermined range about the target output power.

摘要翻译： 提供功率控制电路，用于控制根据诸如宽带码分多址（WCDMA）的连续时间发射方案工作的移动终端的发射机的输出功率。 发射电路处理正交基带信号以提供射频发射信号。 射频发射信号通过耦合器耦合到功率控制电路并被处理以提供反馈振幅信号。 功率控制电路用于使用从正交基带信号产生的参考振幅信号从反馈信号中去除幅度调制分量，从而提供测量的发射电路的增益信号。 基于所测量的增益信号和目标输出功率，功率控制电路操作以控制发射电路的增益，使得发射电路的输出功率在关于目标输出功率的预定范围内。