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。

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：US09014625B2

公开(公告)日：2015-04-21

申请号：US13482083

申请日：2012-05-29

申请人： Tajinder Manku

发明人： Tajinder Manku

IPC分类号： H04B5/00

CPC分类号： H04B5/0062 ,  G06K19/0723 ,  H04B5/0075 ,  H04B5/0081

摘要： An inductive coupling apparatus for modifying an incoming radio frequency (RF) signal includes an inductive element. A variable impedance circuit includes an output electrically coupled to the inductive element. A band-pass delta sigma modulator is coupled to the variable impedance circuit and digitally controls the output of the variable impedance circuit. The incoming RF signal is modified as the coupled impedance of the inductive element is adjusted in accordance with the output of the variable impedance circuit.

摘要翻译： 用于修改输入射频（RF）信号的电感耦合装置包括电感元件。 可变阻抗电路包括电耦合到电感元件的输出端。 带通ΔΣ调制器耦合到可变阻抗电路并数字地控制可变阻抗电路的输出。 随着可变阻抗电路的输出调整电感元件的耦合阻抗，输入RF信号被修改。

公开(公告)号：US09014624B2

公开(公告)日：2015-04-21

申请号：US13482008

申请日：2012-05-29

申请人： Tajinder Manku

发明人： Tajinder Manku

IPC分类号： H04B5/00

CPC分类号： H04B5/0062 ,  H04B5/0075 ,  H04B5/0081

摘要： An inductive coupling apparatus for modifying an incoming radio frequency (RF) signal includes an inductive element for modifying the incoming RF signal in accordance with a coupled impedance characteristic of the inductive element. A variable impedance circuit includes an output electrically coupled to the inductive element. A low pass delta sigma modulator is coupled to the variable impedance circuit and digitally controls the output of the variable impedance circuit, the coupled impedance of the inductive element being adjusted based on the output of the variable impedance circuit.

摘要翻译： 用于修改输入射频（RF）信号的电感耦合装置包括用于根据电感元件的耦合阻抗特性修改输入RF信号的电感元件。 可变阻抗电路包括电耦合到电感元件的输出端。 低通量ΔΣ调制器耦合到可变阻抗电路并且数字地控制可变阻抗电路的输出，基于可变阻抗电路的输出来调整电感元件的耦合阻抗。

公开(公告)号：US08743746B2

公开(公告)日：2014-06-03

申请号：US13557507

申请日：2012-07-25

申请人： Tajinder Manku ,  Zohaib Moti

发明人： Tajinder Manku ,  Zohaib Moti

IPC分类号： H04B7/005

CPC分类号： H04B1/525

摘要： A radio transceiver including a transmitter and a receiver. A filter coupled to an output of the transmitter, the filter has one or more inductors and one or more capacitors, where the filter is tuned by varying one or more capacitance values of the one or more capacitors in the filter to tune the filter. The one or more capacitors are Barium Strontium Titanate (BST) ceramic integrated capacitors that are each tuned by application of a bias voltage thereto. A filter tuner circuit is configured to apply the bias voltage to the one or more capacitors, where the bias voltage is initially established as a stored initial value, and where the bias voltage is refined by a proportional-integral-derivative (PID) controller configured to optimize a power within the transceiver. This abstract is not to be considered limiting since various implementations may incorporate more, fewer or different elements.

公开(公告)号：US20130300619A1

公开(公告)日：2013-11-14

申请号：US13470472

申请日：2012-05-14

申请人： Tajinder Manku

发明人： Tajinder Manku

IPC分类号： H01Q9/00 ,  H01Q1/50

CPC分类号： G01S13/756 ,  G06K19/0723 ,  G06K19/0726 ,  G06K19/07786

摘要： An antenna apparatus for backscattering an incoming radio frequency (RF) signal includes an antenna for backscattering the incoming RF signal in accordance with a reflection coefficient characteristic of the antenna. A variable impedance circuit includes an output electrically connected to the antenna. A band-pass delta sigma modulator is coupled to the variable impedance circuit and digitally controls the output of the variable impedance circuit, such that the reflection coefficient of the antenna is adjusted based on the digitally controlled output of the variable impedance circuit. In an RFID network, the apparatus and method reduces the effect of DC offset in the reader device and the effects of the reader device's phase noise, while allowing for complex modulations.

摘要翻译： 用于向后向散射输入射频（RF）信号的天线装置包括用于根据天线的反射系数特性来反向散射输入RF信号的天线。 可变阻抗电路包括电连接到天线的输出。 带通ΔΣ调制器耦合到可变阻抗电路，并且数字地控制可变阻抗电路的输出，使得基于可变阻抗电路的数字控制输出来调整天线的反射系数。 在RFID网络中，该装置和方法减少了读取器装置中DC偏移的影响以及读取器装置的相位噪声的影响，同时允许复杂的调制。

公开(公告)号：US20120022968A1

公开(公告)日：2012-01-26

申请号：US12902828

申请日：2010-10-12

申请人： Tajinder Manku

发明人： Tajinder Manku

IPC分类号： H04W12/08 ,  G06F17/30

CPC分类号： H04W12/06 ,  G06Q30/0613 ,  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; and use the validation credentials to validate the wireless communication device with the second access point to obtain access to the network.

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; 并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。

公开(公告)号：US07715814B2

公开(公告)日：2010-05-11

申请号：US11569031

申请日：2005-05-13

申请人： Tajinder Manku ,  Masoud Kahrizi

发明人： Tajinder Manku ,  Masoud Kahrizi

IPC分类号： H04B1/10 ,  H04B1/26

CPC分类号： H04B1/30 ,  H03D7/00 ,  H04B15/06 ,  H04B2215/065

摘要： A method and system for dynamically shifting spurious tones away from the desired frequency in a virtual local oscillator receiver, such that any undesired signal residing at such spurious tones are effectively delineated from the desired signal and removed from the RF input signal. The system detects the presence of potential undesired blocker signals in the RF input signal, and initiates an iterative power comparison and mixer signal adjustment loop. As the virtual local oscillator uses two mixer signals, the frequency of one of the mixer signals is adjusted during the loop until the power of the down-converted signal is minimized to a predetermined level. Minimized power in the down-converted signal is indicative of the absence of the blocker signal, since the presence of a relatively high power signal is indicative of a blocker signal overlapping with a desired signal.

摘要翻译： 一种用于在虚拟本地振荡器接收机中动态地将杂散音调从期望频率移位的方法和系统，使得驻留在这种寄生音调处的任何不需要的信号被有效地从期望的信号中描绘出并从RF输入信号中去除。 该系统检测RF输入信号中存在潜在的不希望的阻塞信号，并启动迭代功率比较和混频信号调节环路。 由于虚拟本地振荡器使用两个混频器信号，所以在环路中调整混频信号之一的频率，直到下变频信号的功率被最小化到预定的电平。 下变频信号中的最小化功率表示不存在阻塞信号，因为相对高功率信号的存在表示阻塞信号与期望信号重叠。

公开(公告)号：US20100060333A1

公开(公告)日：2010-03-11

申请号：US12515562

申请日：2007-12-13

申请人： Tajinder Manku ,  Christopher Snyder

发明人： Tajinder Manku ,  Christopher Snyder

IPC分类号： H03L7/06

CPC分类号： H03K5/135 ,  H03L7/091 ,  H03L7/093 ,  H03L7/099 ,  H03L7/10

摘要： A digital phase lock loop (PLL) circuit having a digital charge pump circuit for providing digital signals corresponding to a difference in phase between an internal clock corresponding to a voltage controlled oscillator, and a reference clock. These digital signals are processed by a digital processing circuit for providing digital control signals. Some of the digital control signals are converted into an analog control signal to provide fine control of the voltage controlled oscillator, while the remaining digital control signals provide coarse control of the voltage controlled oscillator.

摘要翻译： 一种具有数字电荷泵电路的数字锁相环（PLL）电路，用于提供对应于与压控振荡器相对应的内部时钟之间的相位差的数字信号和参考时钟。 这些数字信号由用于提供数字控制信号的数字处理电路处理。 一些数字控制信号被转换成模拟控制信号以提供压控振荡器的精细控制，而剩余的数字控制信号提供压控振荡器的粗略控制。

公开(公告)号：US20080182537A1

公开(公告)日：2008-07-31

申请号：US11626964

申请日：2007-01-25

申请人： Tajinder Manku ,  Abdellatif Bellaouar ,  Alan Holden ,  Hamid R. Safari

发明人： Tajinder Manku ,  Abdellatif Bellaouar ,  Alan Holden ,  Hamid R. Safari

IPC分类号： H04B17/00

CPC分类号： H04B1/12 ,  H03D2200/0045 ,  H04B17/21

摘要： An integrated automatic IIP2 calibration architecture for wireless transceivers is disclosed. The architecture enables a wireless transceiver to generate a test radio frequency (RF) signal having a second order tone with minimal additional circuitry. In particular, the test RF signal is generated using a combination of native transceiver circuits and test adaptor circuits. Native transceiver circuits are those circuits implemented on the transceiver chip for executing native transceiver functions during normal operation, which can be used for generating the test (RF) signal. Test adaptor circuits are added to the transceiver chip, more specifically to the native circuits, for enabling the native circuits to generate the test RF signal in a self-test mode of operation. Circuits for implementing a particular IIP2 minimizing scheme can be included on the transceiver chip for automatic IIP2 calibration during the self-test mode of operation.

摘要翻译： 公开了一种用于无线收发器的综合自动IIP2校准架构。 该架构使得无线收发器能够生成具有最小附加电路的具有二阶音调的测试射频（RF）信号。 特别地，使用本机收发器电路和测试适配器电路的组合产生测试RF信号。 本地收发器电路是在收发器芯片上实现的用于在正常操作期间执行本机收发器功能的那些电路，其可用于产生测试（RF）信号。 测试适配器电路被添加到收发器芯片中，更具体地被添加到本地电路，用于使得本机电路能够以自测试操作模式生成测试RF信号。 用于实现特定的IIP2最小化方案的电路可以在自检操作模式下在收发器芯片中包括在自动IIP2校准中。