公开(公告)号：US20060220742A1

公开(公告)日：2006-10-05

申请号：US11092566

申请日：2005-03-29

申请人： Tajinder Manku

发明人： Tajinder Manku

IPC分类号： H03G3/10

CPC分类号： H04W52/52 ,  H03G3/3042 ,  H04B2001/0416

摘要： A system for generating a supply voltage, temperature and process compensated gain control voltage from a digital data word. In particular, the compensated gain voltage control voltage maintains a linear relationship between a change in gain in response to an input gain control voltage for a gain circuit of a transmitter circuit. A monitor circuit senses at least one of the supply voltage, temperature and process parameters, and generates a first set of digital signals corresponding to the sensed parameter. A digital compensator circuit converts the input gain control voltage into a second set of digital signals, and decodes the combined first and second set of digital signals to provide a data word. The data word is converted into an analog voltage representing the compensated gain voltage control voltage. The digital compensator circuit includes a table of compensation values, each accessible by a distinct combination of the first and second set of digital signals.

摘要翻译： 一种用于从数字数据字产生电源电压，温度和工艺补偿的增益控制电压的系统。 特别地，补偿增益电压控制电压响应于发射机电路的增益电路的输入增益控制电压而保持增益变化之间的线性关系。 监视器电路感测电源电压，温度和工艺参数中的至少一个，并产生对应于感测参数的第一组数字信号。 数字补偿器电路将输入增益控制电压转换为第二组数字信号，并对组合的第一和第二组数字信号进行解码以提供数据字。 数据字被转换为表示补偿的增益电压控制电压的模拟电压。 数字补偿器电路包括补偿值表，每一个表可以通过第一组和第二组数字信号的不同组合来访问。

公开(公告)号：US07016662B1

公开(公告)日：2006-03-21

申请号：US10070013

申请日：2000-09-01

申请人： Tajinder Manku ,  Chris Snyder ,  Gareth Weale

发明人： Tajinder Manku ,  Chris Snyder ,  Gareth Weale

IPC分类号： H04B1/26

CPC分类号： H04B1/30 ,  H03D3/008 ,  H03D7/163 ,  H03D7/166 ,  H04B1/00 ,  H04B1/0475 ,  H04B2001/0491

摘要： This patent describes a method and system which overcomes the LO-leakage problem of direct conversion and similar RF transmitters. To solve this problem a virtual LO™ signal is generated within the baseband which is tuned to the incoming RF signal. The virtual local oscillator (VLO) signal is constructed using signals that do not contain a significant amount of power (or no power at all) at the wanted output RF frequency. Any errors is generating the virtual LO signal are minimized using a closed loop correction scheme.

摘要翻译： 该专利描述了克服直接转换和类似RF发射机的LO泄漏问题的方法和系统。 为了解决这个问题，在基带内生成虚拟LO（TM）信号，该信号被调谐到输入的RF信号。 虚拟本地振荡器（VLO）信号使用在所需输出RF频率下不包含大量功率（或无功率）的信号构成。 使用闭环校正方案，产生虚拟LO信号的任何错误被最小化。

公开(公告)号：US06232848B1

公开(公告)日：2001-05-15

申请号：US09213361

申请日：1998-12-17

申请人： Tajinder Manku

发明人： Tajinder Manku

IPC分类号： H03H500

CPC分类号： H03F3/45085 ,  H03D7/1433 ,  H03D7/1441 ,  H03D7/1458 ,  H03D7/1491 ,  H03D2200/0043 ,  H03D2200/0084 ,  H03D2200/0088 ,  H03F1/22 ,  H03F3/191 ,  H03F2200/294 ,  H03F2200/372 ,  H03F2203/45704 ,  H03H7/1775

摘要： An integrated radio frequency (RF) coupling scheme is provided for realizing low voltage RF integrated circuits. According to the invention, on-chip capacitively coupled resonant elements are used to DC isolate circuit block elements which are required to be connected in series and share a common DC current. The coupling scheme according to the present invention may be applied to several commonly used RF integrated circuit topologies such as low noise amplifiers and mixers.

摘要翻译： 提供了一种用于实现低压RF集成电路的集成射频（RF）耦合方案。 根据本发明，使用片上电容耦合谐振元件将要求串联连接并共享公共DC电流的电路块元件直流隔离。 根据本发明的耦合方案可以应用于几种常用的RF集成电路拓扑，例如低噪声放大器和混频器。

公开(公告)号：US08581760B2

公开(公告)日：2013-11-12

申请号：US13251935

申请日：2011-10-03

申请人： Khurram Muhammad ,  Tajinder Manku ,  Semyon Lebedev

发明人： Khurram Muhammad ,  Tajinder Manku ,  Semyon Lebedev

IPC分类号： H03M1/12

CPC分类号： H03M1/201 ,  H03M1/685 ,  H03M1/687 ,  H03M3/30

摘要： A digital-to-analog converter is disclosed. The converter includes a gradient correction module that generates a correction term based on a model of gradient error. The correction term is then applied to the signal path in the digital domain or applied to the output of the digital-to-analog converter in the analog domain. The model used to generate the correction term is based on a vertical gradient error in the array of current source elements, which may be modelled and calibrated using a second-order polynomial. Further, a digital-to-analog converter having a Nyquist DAC and an oversampled DAC is disclosed. When the oversampled DAC is enabled, the resolution of the Nyquist DAC may be increased while slowing the conversion rate.

摘要翻译： 公开了一种数模转换器。 该转换器包括梯度校正模块，该梯度校正模块基于梯度误差的模型产生校正项。 然后将校正项应用于数字域中的信号路径或应用于模拟域中的数模转换器的输出。 用于产生校正项的模型基于当前源元素阵列中的垂直梯度误差，其可以使用二阶多项式来建模和校准。 此外，公开了具有奈奎斯特DAC和过采样DAC的数模转换器。 当使能过采样DAC时，可能会增加奈奎斯特DAC的分辨率，同时降低转换速率。

公开(公告)号：US20120116886A1

公开(公告)日：2012-05-10

申请号：US13104279

申请日：2011-05-10

申请人： Tajinder Manku

发明人： Tajinder Manku

IPC分类号： G06Q30/02

CPC分类号： H04W12/06 ,  G06Q30/0267 ,  H04L63/062 ,  H04L63/18 ,  H04W8/26 ,  H04W12/04 ,  H04W48/20

摘要： A wireless communication device is configured to be able to communicate via both a first access point and a second access point for using the first access point to obtain validation credentials in order to permit use of the second access point to access a network. The wireless communication device comprises a processor; and a non-transitory computer readable medium having stored thereon computer executable instructions. The instructions are operable to: initiate communication with the second access point in order to access a network; obtain an access point identifier from the second access point, the access point identifier for identifying the second access point; transmit the access point identifier to a validation server via the first access point; receive validation credentials from the validation server via the first access point; the validation credentials including at identifier of a third party, the third party sponsoring access to the second access point; use the validation credentials to validate the wireless communication device with the second access point to obtain access to the network; and present advertising information on the wireless communication device, the advertising information pertaining to the third party.

摘要翻译： 无线通信设备被配置为能够经由第一接入点和第二接入点经由第二接入点进行通信，以便使用第一接入点来获得有效凭证，以允许使用第二接入点来接入网络。 无线通信设备包括处理器; 以及其上存储有计算机可执行指令的非暂时性计算机可读介质。 所述指令可操作以：发起与所述第二接入点的通信以便接入网络; 从第二接入点获取接入点标识符，用于识别第二接入点的接入点标识符; 经由第一接入点将接入点标识符发送到验证服务器; 通过第一接入点从验证服务器接收验证凭证; 所述验证凭证包括第三方的标识符，所述第三方支持对所述第二接入点的访问; 使用验证凭证来验证具有第二接入点的无线通信设备以获得对网络的访问; 并且在无线通信设备上呈现关于第三方的广告信息的广告信息。

公开(公告)号：US20100029228A1

公开(公告)日：2010-02-04

申请号：US12520518

申请日：2007-12-20

申请人： Alan Holden ,  Hamid Safiri ,  Michel J.G.J.P. Frechette ,  Sherif H.K. Embabi ,  Abdellatif Bellaouar ,  Stephen Arnold Devison ,  Tajinder Manku

发明人： Alan Holden ,  Hamid Safiri ,  Michel J.G.J.P. Frechette ,  Sherif H.K. Embabi ,  Abdellatif Bellaouar ,  Stephen Arnold Devison ,  Tajinder Manku

IPC分类号： H04B1/04

CPC分类号： H03G3/3047

摘要： A power ramping circuit for use in the transmit path of a radio frequency (RF) circuit. The power ramping circuit includes parallel connected transistors used as logarithmic resistor attenuators for adjusting current to a mixer circuit in the transmit path. The parallel connected transistors can be sized differently, and are sequentially turned off to gradually increase the current provided to the mixer circuit. A ramp control circuit controls the parallel connected transistors in response to either an analog signal or a digital signal.

摘要翻译： 一种用于射频（RF）电路的发射路径的功率斜坡电路。 功率斜坡电路包括并联的晶体管，用作对数电阻衰减器，用于调节到发射路径中的混频器电路的电流。 并联连接的晶体管的尺寸可以不同，并被依次关闭，以逐渐增加提供给混频器电路的电流。 斜坡控制电路响应于模拟信号或数字信号来控制并联的晶体管。

公开(公告)号：US20080007334A1

公开(公告)日：2008-01-10

申请号：US11569021

申请日：2005-05-12

申请人： Tajinder Manku

发明人： Tajinder Manku

IPC分类号： H03F1/32

CPC分类号： H03K5/1252 ,  H03D7/1441 ,  H03D7/1458 ,  H03D7/1491 ,  H03F1/3211 ,  H03F1/3223 ,  H03F3/24 ,  H03F3/45183 ,  H03F2200/372 ,  H03F2200/87 ,  H03F2203/45318 ,  H03F2203/45366 ,  H03F2203/45498 ,  H03F2203/45544 ,  H03K5/02 ,  H04B1/0475 ,  H04B1/123 ,  H04B2001/0441

摘要： A CMOS transconductor for cancelling third-order intermodulation is provided. The transconductor includes a transconductance circuit and a tuneable distortion circuit. The transconductance circuit takes an input voltage and generates an output current having a transconductance element and an IM3 element. The distortion circuit takes the same input voltage and generates a current having an IM3 element of equal amplitude and opposite phase to the IM3 element of the transconductance circuit. A controller circuit tunes the distortion circuit to adjust its IM3 element to substantially equal the amplitude of the IM3 of the transconductance circuit. The distortion and transconductance circuits are arranged to sum their output currents thereby effectively cancelling the IM3 elements, leaving the transconductance relatively unmodified.

摘要翻译： 提供了用于消除三阶互调的CMOS跨导体。 跨导体包括跨导电路和可调谐失真电路。 跨导电路采用输入电压并产生具有跨导元件和IM3元件的输出电流。 失真电路采用相同的输入电压，并产生具有与跨导电路的IM3元件相等幅度和相反相位的IM3元件的电流。 控制器电路调谐失真电路以将其IM3元件调整为基本上等于跨导电路的IM3的振幅。 失真和跨导电路被布置为对其输出电流求和，从而有效地消除IM3元件，从而使跨导相对未被修改。

公开(公告)号：US07167063B2

公开(公告)日：2007-01-23

申请号：US11018846

申请日：2004-12-22

申请人： Volodymyr Yavorskyy ,  Tajinder Manku ,  James Wei

发明人： Volodymyr Yavorskyy ,  Tajinder Manku ,  James Wei

IPC分类号： H03B5/00

CPC分类号： H03B5/04 ,  H03B5/1212 ,  H03B5/1228 ,  H03B5/124 ,  H03B5/1293 ,  H03B2200/0088 ,  H03L7/099

摘要： A low-phase noise voltage control oscillator (VCO) comprising a voltage source for supplying control voltage to the VCO core; a phase lock loop, having an output connected to an input of the voltage source; a VCO core, including an amplifier circuit with noiseless biasing and a tank circuit with noiseless biasing of the varactors; having an output connected to an input of the phase lock loop; and an attenuator, located between the voltage source and the VCO core, for reducing phase noise from the voltage source to the VCO core.

摘要翻译： 一种低相位噪声电压控制振荡器（VCO），包括用于向VCO核心提供控制电压的电压源; 锁相环，具有连接到电压源的输入的输出; VCO核心，包括具有无噪声偏置的放大器电路和具有无阻抗偏置的变容二极管的电路; 具有连接到所述锁相环的输入的输出; 以及位于电压源和VCO核心之间的衰减器，用于减小从电压源到VCO核心的相位噪声。

公开(公告)号：US20050180528A1

公开(公告)日：2005-08-18

申请号：US10505413

申请日：2003-02-25

申请人： Tajinder Manku

发明人： Tajinder Manku

IPC分类号： H03D3/00 ,  H03D7/16 ,  H04B1/04 ,  H04B1/28 ,  H04B1/30 ,  H04L27/06

CPC分类号： H04B1/28 ,  H03D3/008 ,  H03D7/163 ,  H03D7/166 ,  H04B1/30 ,  H04B2001/0491

摘要： There is a need for an inexpensive, high-performance, fully-integrable, multi-standard transceiver, which suppresses spurious noise signals. The invention provides a topology that satisfies this need, using a first signal generator which produces an oscillator signal f1 and a second signal generator which produces a mono-tonal mixing signal φ2, where f1 is a multiple of the frequency of φ2; and a logic circuit for generating a multi-tonal mixing signal φ1, where φ1*φ2 has significant powerat the frequency of said local oscillator signal being emulated, neither of said cp1 nor said φ2 having significant power at the carrier frequency of said input signal x(t) or said LO signal being emulated.

摘要翻译： 需要一种廉价，高性能，完全可集成的多标准收发器，可以抑制杂散噪声信号。 本发明提供一种使用产生振荡器信号f 1的第一信号发生器和产生单声道混合信号phi2的第二信号发生器满足该需要的拓扑，其中f 1是phi 2的频率的倍数 ; 以及用于产生多音调混合信号phi 1的逻辑电路，其中，在所述本地振荡器信号的频率被仿真的情况下，phi 1 * phi2具有显着的功率，所述cp1和所述phi2都不具有在所述 输入信号x（t）或所述LO信号被仿真。

公开(公告)号：US06727764B2

公开(公告)日：2004-04-27

申请号：US10096147

申请日：2002-03-08

申请人： Tajinder Manku ,  Stephen Arnold Devison ,  Christopher E. Snyder

发明人： Tajinder Manku ,  Stephen Arnold Devison ,  Christopher E. Snyder

IPC分类号： H03B100

CPC分类号： H03L7/0995 ,  H03J2200/17 ,  H03L7/18

摘要： The invention provides a system and method of generating a number of inputs to the mixer elements in a direct conversion (homodyne) receiver configuration using Virtual Local Oscillator (VLO) techniques. These generated inputs meet the requirement that they must have a fixed and stable phase-relationship, as well as being correctly related in terms of their power spectra relative to the operating radio (RF), intermediate (IF), and baseband frequencies of the system, and that when applied to the mixer elements they permit the mixer elements to create internally the effect of applying the Local Oscillator signal at a suitable frequency.

摘要翻译： 本发明提供了一种使用虚拟本地振荡器（VLO）技术在直接转换（零差）接收器配置中向混频器元件生成多个输入的系统和方法。 这些产生的输入满足了它们必须具有固定和稳定的相位关系的要求，并且在功率谱相对于系统的操作无线电（RF），中间（IF）和基带频率方面正确地相关 ，并且当应用到混频器元件时，它们允许混频器元件在内部产生以适当频率施加本地振荡器信号的效果。