公开(公告)号：US20070165748A1

公开(公告)日：2007-07-19

申请号：US10596910

申请日：2004-12-22

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

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

IPC分类号： H03D3/00

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

摘要： A slot-based low Intermediate Frequency (‘IF’) radio receiver comprises an IF local oscillator for producing I and Q IF local oscillator signal components in phase quadrature, I and Q mixer channels for mixing the input signal with the I and Q IF local oscillator signal components to produce I and Q IF signal components. The IF local oscillator includes frequency alternation means for causing the IF local oscillator frequency to alternate a plurality of times during each frame between first and second values, one of which is greater and the other smaller than the desired carrier frequency of the input signal so as to reduce the effect of adjacent and alternate interferers. The phase of the baseband local oscillator is alternated in synchronism with the alternation of the IF local oscillator frequency.

摘要翻译： 基于时隙的低中频（'IF'）无线电接收机包括一个IF本地振荡器，用于产生相位正交I和Q混频器信道中的I和Q IF本地振荡器信号分量，用于将输入信号与I和Q IF本地 振荡器信号分量产生I和Q IF信号分量。 IF本地振荡器包括频率交替装置，用于使得IF本地振荡器频率在第一和第二值之间的每个帧期间交替多次，其中一个值较大，另一个小于输入信号的期望载波频率，以便 以减少相邻和替代干扰源的影响。 基带本机振荡器的相位与IF本地振荡器频率的交替同步交替。

公开(公告)号：US07697632B2

公开(公告)日：2010-04-13

申请号：US10596910

申请日：2004-12-22

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 low Intermediate Frequency (‘IF’) radio receiver comprises an IF local oscillator for producing I and Q IF local oscillator signal components in phase quadrature, and I and Q mixer channels for mixing the input signal with the I and Q IF local oscillator signal components to produce I and Q IF signal components. The IF local oscillator frequency alternates a plurality of times during each frame between first and second values, one of which is greater and the other smaller than the desired carrier frequency of the input signal so as to reduce the effect of adjacent and alternate interferers. The phase of the baseband local oscillator is alternated in synchronism with the alternation of the IF local oscillator frequency.

摘要翻译： 基于时隙的低中频（“IF”）无线电接收机包括用于产生相位正交的I和Q IF本地振荡器信号分量的IF本地振荡器，以及用于将输入信号与I和Q IF混频的I和Q混频器信道 本地振荡器信号分量产生I和Q IF信号分量。 IF本地振荡器频率在第一和第二值之间的每个帧期间交替多次，其中一个值较大，另一个小于输入信号的期望载波频率，以便减少相邻和替代干扰源的影响。 基带本机振荡器的相位与IF本地振荡器频率的交替同步交替。

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：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

IPC分类号： H04B1/10 ,  H04B1/16 ,  H04B1/04

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.

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。

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

IPC分类号： H04B1/18 ,  H04W52/30

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。

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。

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。

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

CPC分类号： H04B1/48 ,  H04B1/109

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。

公开(公告)号：US08624760B2

公开(公告)日：2014-01-07

申请号：US13423649

申请日：2012-03-19

申请人： Christopher Truong Ngo ,  Nadim Khlat

发明人： Christopher Truong Ngo ,  Nadim Khlat

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。