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公开(公告)号：US08068573B1
公开(公告)日：2011-11-29
申请号：US11740967
申请日：2007-04-27
摘要： The present invention is a phase dithered digital communications system that includes a digital receiver, and uses phase dithering to spread the energy of one or more system clocks to minimize receiver de-sensitization. Phase dithering uses a single frequency for each system clock; however, the energy of each system clock is spread over a range of frequencies by changing the duty-cycle of each clock half-cycle. A non-phase dithered clock drives the sampling clock of a receiver analog-to-digital converter to provide accurate correlation with received information, which may allow use of a higher frequency sampling clock than in frequency dithered designs. Phase dithered clocks and non-phase dithered clocks may have constant frequencies that are related to each other by a ratio of two integers; therefore, the time base used for extracting received data is always correlated and accurate.
摘要翻译： 本发明是一种相位抖动数字通信系统，其包括数字接收机，并且使用相位抖动来扩展一个或多个系统时钟的能量以最小化接收机去敏感。 相位抖动对每个系统时钟使用单个频率; 然而，每个系统时钟的能量通过改变每个时钟半周期的占空比在一个频率范围内扩展。 非相抖动时钟驱动接收器模拟 - 数字转换器的采样时钟，以提供与接收信息的精确相关性，这可能允许使用比在频率抖动设计中更高频率的采样时钟。 相位抖动时钟和非相位抖动时钟可以具有通过两个整数的比率彼此相关的恒定频率; 因此，用于提取接收到的数据的时基总是相关和准确的。
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公开(公告)号：US09178364B1
公开(公告)日：2015-11-03
申请号：US12209814
申请日：2008-09-12
申请人： Nadim Khlat , Alexander Wayne Hietala , Chris Ngo
发明人： Nadim Khlat , Alexander Wayne Hietala , Chris Ngo
IPC分类号： H02J7/00
CPC分类号： H02J7/0065 , H02J7/0013
摘要： The present invention relates to estimating a battery current supplied from a battery to a switching power supply, which provides a regulated output signal to a load, based on a switching power supply current in the switching power supply, and then controlling the regulated output signal to limit the battery current to within an acceptable threshold. The switching power supply current may be provided by one or more switching elements in the switching power supply. The switching elements may be mirrored to provide a mirrored switching power supply current, which is used to estimate the battery current. The estimated battery current may include an estimated average battery current, an estimated instantaneous battery current, or both.
摘要翻译： 本发明涉及基于开关电源中的开关电源电流来估计从电池提供给开关电源的电池电流，开关电源向开关电源提供调节的输出信号，然后将调节的输出信号控制到 将电池电流限制在可接受的阈值内。 开关电源电流可以由开关电源中的一个或多个开关元件提供。 开关元件可以被镜像以提供用于估计电池电流的镜像开关电源电流。 估计的电池电流可以包括估计的平均电池电流，估计的瞬时电池电流，或两者。
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公开(公告)号：US09705537B1
公开(公告)日：2017-07-11
申请号：US12563679
申请日：2009-09-21
申请人： Ruediger Bauder , Nadim Khlat , Todd Gillenwater , Bob Sowell
发明人： Ruediger Bauder , Nadim Khlat , Todd Gillenwater , Bob Sowell
CPC分类号： H04B1/0458 , H04B1/0053 , H04B1/0064 , H04B1/16
摘要： Embodiments of the present disclosure relate to a multi-mode RF system, which is capable of transmitting and receiving RF signals using any of multiple RF communications bands. The multi-mode RF system may integrate RF band specific bandpass filters and low noise amplifiers (LNAs) into a single front-end module, such that each filter and amplifier pair provide selection and gain for at least one RF communications band. Outputs of the LNAs may be combined to provide one or more common signals to a transceiver module, which processes baseband signals associated with the RF communications bands. By integrating the filters and amplifiers into a single module, the filters and amplifiers may be closely coupled to one another, thereby supporting short signal paths between the filters and amplifiers, and having impedances high enough to provide good filter selectivity.
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公开(公告)号：US09420395B1
公开(公告)日：2016-08-16
申请号：US12951302
申请日：2010-11-22
申请人： Nadim Khlat
发明人： Nadim Khlat
IPC分类号： H04W4/00
CPC分类号： H04W4/00 , H04B17/3912 , H04W52/08 , H04W52/12 , H04W52/146 , H04W52/241 , H04W52/52
摘要： A user equipment (UE) antenna tuner control system and method that utilize a base transceiver station (BTS) inner power control loop, and in particular utilize a Node-B inner power control loop, are provided. The UE antenna tuner control system and method of the present disclosure include an antenna impedance matching algorithm and a power amplifier (PA) input drive control that are digitally controlled by the BTS. Therefore, each UE having a digitally controllable antenna tuner unit (ATU) and operating within a network that is controllable by the BTS will have increased power efficiency.
摘要翻译： 提供了一种利用基站收发台（BTS）内部功率控制回路，特别是利用节点B内部功率控制回路的用户设备（UE）天线调谐器控制系统和方法。 本公开的UE天线调谐器控制系统和方法包括由BTS数字控制的天线阻抗匹配算法和功率放大器（PA）输入驱动控制。 因此，具有数字可控天线调谐器单元（ATU）并且可在由BTS控制的网络内运行的每个UE将具有增加的功率效率。
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公开(公告)号：US09020455B1
公开(公告)日：2015-04-28
申请号：US13149306
申请日：2011-05-31
申请人： Nadim Khlat
发明人： Nadim Khlat
CPC分类号： H04B1/18 , H04B1/0458 , H04B2001/0416 , H04W52/30
摘要： A transceiver may include an antenna tuning control system operably associated with an antenna tuner to control the current power levels of the transmission signal and the receive signal. The antenna tuner control system may receive transmit power control (TPC) information, which was transmitted to the transceiver from a base station on the receive signal. The TPC information may be utilized to change the current power level of the transmission signal to a desired transmission power level. In addition, the antenna tuner control system may generate receive power control (RPC) information. The RPC information may be utilized to change the current power level of the receive signal to a desired receive power level. The antenna tuner control system is operable to adjust the pass band in accordance with the TPC information and the RPC information.
摘要翻译： 收发器可以包括可操作地与天线调谐器相关联的天线调谐控制系统，以控制传输信号和接收信号的当前功率电平。 天线调谐器控制系统可以接收从基站在接收信号上发送到收发信机的发射功率控制（TPC）信息。 TPC信息可以用于将传输信号的当前功率电平改变到期望的发射功率电平。 此外，天线调谐器控制系统可以产生接收功率控制（RPC）信息。 RPC信息可以用于将接收信号的当前功率电平改变到期望的接收功率电平。 天线调谐器控制系统可操作以根据TPC信息和RPC信息来调整通带。
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公开(公告)号：US08903333B1
公开(公告)日：2014-12-02
申请号：US13149216
申请日：2011-05-31
申请人： Nadim Khlat
发明人： Nadim Khlat
IPC分类号： H04B1/40
CPC分类号： H04B1/525
摘要： An antenna tuner provides a pass band with a transmission resonant frequency and a receive resonant frequency. In this manner, the pass band of the antenna tuner can simultaneously provide matching at both a transmission frequency and a receive frequency, when both transmission signals and receive signals are received on the same antenna. The antenna tuner includes a first capacitive element that is coupled to series resonate with the antenna and a low-pass pi network.
摘要翻译： 天线调谐器提供具有发射谐振频率和接收谐振频率的通带。 以这种方式，当发送信号和接收信号都在相同的天线上接收时，天线调谐器的通带可以同时提供传输频率和接收频率两者的匹配。 天线调谐器包括耦合到与天线串联谐振的第一电容元件和低通pi网络。
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公开(公告)号：US08760228B2
公开(公告)日：2014-06-24
申请号：US13531719
申请日：2012-06-25
申请人： Nadim Khlat
发明人： Nadim Khlat
IPC分类号： H03F3/68
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。
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公开(公告)号：US08736398B2
公开(公告)日：2014-05-27
申请号：US13197216
申请日：2011-08-03
申请人： Joshua J. Caron , Nadim Khlat
发明人： Joshua J. Caron , Nadim Khlat
IPC分类号： H01P5/12
摘要： Disclosed is a diplexed transmit (TX) filter and RF switch for suppressing third order intermodulation (IM3) products. Included are first and second duplexers each having a receive (RX) port, a TX port, and an RX/TX port. Also included are first and second power splitter/combiners each having first, second, and third terminals. Further included are first, second, and third phase shift networks. The first power splitter/combiner's first terminal is coupled to the first duplexer's TX port and a first switch segment is coupled between the first duplexer's RX/TX port and the first terminal of the second coupler. The first phase shift network is coupled to the second duplexer's TX port and a second switch segment in series with the second phase shift network is coupled between the second duplexer's RX/TX port and second coupler's second terminal. The third phase shift network is coupled to the second duplexer's RX terminal.
摘要翻译： 公开了用于抑制三阶互调（IM3）产品的双工发射（TX）滤波器和RF开关。 包括具有接收（RX）端口，TX端口和RX / TX端口的第一和第二双工器。 还包括第一和第二功率分配器/组合器，每个具有第一，第二和第三端子。 还包括第一，第二和第三相移网络。 第一功率分配器/组合器的第一端子耦合到第一双工器的TX端口，并且第一开关段耦合在第一双工器的RX / TX端口和第二耦合器的第一端子之间。 第一相移网络耦合到第二双工器的TX端口，并且与第二相移网络串联的第二开关段耦合在第二双工器的RX / TX端口和第二耦合器的第二端子之间。 第三相移网络耦合到第二双工器的RX端子。
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9.发明授权Apparatuses and methods for rate conversion and fractional delay calculation using a coefficient look up table 失效使用系数查询表进行速率转换和分数延迟计算的装置和方法公开(公告)号：US08624760B2
公开(公告)日：2014-01-07
申请号：US13423649
申请日：2012-03-19
IPC分类号： H03M7/00
CPC分类号： H03M7/3073 , H03M7/3082 , H04B17/13
摘要： A system and method for performing sample rate conversion and creating fractional delays to a signal is disclosed. The system comprises a filter, a look up table for storing coefficients for sample rate conversion and fractional delays, and control circuitry configured to use an indexing scheme to select one or more coefficients from the look up table for rate conversion and fractional delays. The coefficients stored in the look up table comprise the coefficients required to generate delays in desired increments of a sample rate. In the disclosed method, the one or more coefficients necessary for a desired sample rate and fractional delay are selected from a single look up table and provided to a filter to delay the signal based upon the input sample rate.
摘要翻译： 公开了一种用于对信号进行采样率转换和产生分数延迟的系统和方法。 该系统包括滤波器，用于存储用于采样率转换和分数延迟的系数的查找表以及配置为使用索引方案从查找表中选择一个或多个系数以用于速率转换和分数延迟的控制电路。 存储在查找表中的系数包括以采样率的期望增量产生延迟所需的系数。 在所公开的方法中，从单个查询表中选择所需采样率和分数延迟所需的一个或多个系数，并提供给滤波器以基于输入的采样率来延迟信号。
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公开(公告)号：US08571498B2
公开(公告)日：2013-10-29
申请号：US13188024
申请日：2011-07-21
申请人： Nadim Khlat
发明人： Nadim Khlat
IPC分类号： H04B1/04
CPC分类号： H03F1/0227 , H03F1/0244
摘要： 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.
摘要翻译： 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。
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