公开(公告)号：US07265629B2

公开(公告)日：2007-09-04

申请号：US11092566

申请日：2005-03-29

申请人： Tajinder Manku

发明人： Tajinder Manku

IPC分类号： H03F3/04

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：US07215931B2

公开(公告)日：2007-05-08

申请号：US10363158

申请日：2002-06-19

申请人： Chris Snyder ,  Tajinder Manku ,  Gareth Weale ,  Lawrence Wong

发明人： Chris Snyder ,  Tajinder Manku ,  Gareth Weale ,  Lawrence Wong

IPC分类号： H04B1/40 ,  H04B1/18 ,  H04B1/16 ,  H04B1/38 ,  H04B1/66

CPC分类号： H03D7/163 ,  H04B1/406

摘要： This patent describes a method and system which overcomes the LO-leakage problem during modulation and demodulation, common to direct conversion and similar RF transmitters and receivers. This problem is solved using a virtual local oscillator (VLO™) signal which emulates mixing with a local oscillators (LO) signal. The VLO signal is constructed using complementary mixing signals that suppress mixing power in the bandwidth of the input signal, and within the bandwidth of the output frequency. Specifically, mixing is done in two or more stages, using time-varying mixing signals φ1 and φ2 which satisfy the following criteria: φ1*φ2 having significant power at the frequency of the LO being emulated, one of φ1 and φ2 having minimal power around the frequency of the output signal y(t), and the other of φ1 and φ2 having minimal power around the center frequency, fRF, of the input signal x(t).

摘要翻译： 该专利描述了克服在调制和解调期间的LO泄漏问题的方法和系统，其直接转换和类似的RF发射器和接收器是共同的。 使用模拟与本地振荡器（LO）信号的混合的虚拟本地振荡器（VLO TM）信号来解决该问题。 使用互补混合信号构成VLO信号，其抑制输入信号的带宽中的混合功率，并且在输出频率的带宽内。 具体地说，使用满足以下标准的时变混合信号phi1和2i2的两个或更多个阶段进行混合：phi <1 / 在正在仿真的LO的频率处具有显着功率的功能，具有在频率附近具有最小功率的一个phi <1>和2 的输出信号y（t），并且具有围绕中心频率f RF的最小功率的另一个phi <1> 1＆lt; 2＆lt; 2＆gt; 的输入信号x（t）。

公开(公告)号：US07164897B2

公开(公告)日：2007-01-16

申请号：US10486830

申请日：2002-08-28

申请人： Tajinder Manku ,  Yang Ling ,  William Kung

发明人： Tajinder Manku ,  Yang Ling ,  William Kung

IPC分类号： H04B1/18

CPC分类号： H04B1/28 ,  H03D7/1433 ,  H03D7/1441 ,  H03D7/1466 ,  H03D7/1483 ,  H03D2200/0025 ,  H03D2200/0043 ,  H03D2200/0084 ,  H03D2200/009

摘要： An inexpensive, high-performance, fully-integrable, multi-standard transceiver with a topology including: an active mixer, followed by a high pass filter, and a passive mixer. The input signal is modulated up, or demodulated down, using a pair of complementary, aperiodic mixing signals. The use of aperiodic mixing signals allows a fully-integrated transceiver to be built. Embodiments of the active mixer include those having electrically-adjustable performance and allowing multiple RF signal inputs. This allows the topology to be employed in multi-band, multi-frequency applications, while still providing high performance.

摘要翻译： 具有拓扑结构的便宜，高性能，完全可集成的多标准收发器，包括：有源混频器，其次是高通滤波器和无源混频器。 输入信号使用一对互补的非周期性混合信号进行调制或解调。 使用非周期混合信号可以建立一个完全集成的收发器。 有源混频器的实施例包括具有电可调节性能并允许多个RF信号输入的那些。 这允许在多频，多频应用中使用拓扑，同时仍然提供高性能。

公开(公告)号：US20060246861A1

公开(公告)日：2006-11-02

申请号：US10541120

申请日：2004-01-08

申请人： Sathwant Dosanjh ,  William Kung ,  Tajinder Manku

发明人： Sathwant Dosanjh ,  William Kung ,  Tajinder Manku

IPC分类号： H03J7/32

CPC分类号： H03B21/00 ,  H03B21/01 ,  H03B27/00 ,  H03D3/007 ,  H03H7/21 ,  H03H2007/0192 ,  H03J2200/17 ,  H03J2200/40 ,  H04B1/30

摘要： The present invention relates generally to communications, and more specifically to a method and apparatus for generating local oscillator signals used for up- and down-conversion of RF (radio frequency) signals. A major problem in the design of modulators and demodulators, if the leakage of local oscillator (LO) signals into the received signal path. The invention presents a number of highly integratable circuits which resolve the LO leakage problem, using regenerative divider circuits acting on oscillator signals which are running at a multiple or fraction of the frequency of the desired LO signal, to generate in-phase (I) and quadrature (Q) mixing signals. Embodiments of these circuits also use harmonic subtraction and polyphase mixers, as well as virtual local oscillator TM (VLO) mixing signals. VLO mixing signals are signal pairs which emulate local oscillator signals by means of complementary mono-tonal and multi-tonal mixing signals.

摘要翻译： 本发明一般涉及通信，更具体地涉及用于产生用于RF（射频）信号的上变频和下变频的本地振荡器信号的方法和装置。 如果本地振荡器（LO）信号泄漏到接收信号路径中，调制器和解调器的设计中的主要问题。 本发明提出了许多高度可积分的电路，其解决了LO泄漏问题，使用作用于振荡器信号的再生分压器电路，该振荡器信号以期望LO信号的频率的多个或几分之一运行，以产生同相（I）和 正交（Q）混频信号。 这些电路的实施例也使用谐波减法和多相混频器，以及虚拟本地振荡器TM（VLO）混频信号。 VLO混合信号是通过互补单声道和多音调混合信号模拟本地振荡器信号的信号对。

公开(公告)号：US20060148438A1

公开(公告)日：2006-07-06

申请号：US10531231

申请日：2003-10-15

申请人： Tajinder Manku

发明人： Tajinder Manku

IPC分类号： H04B1/26

CPC分类号： H04L25/061 ,  H03D7/1433 ,  H03D7/1441 ,  H03D7/1458 ,  H03D7/1466 ,  H03D7/161 ,  H03D2200/0043 ,  H03D2200/0047 ,  H03D2200/0084 ,  H03D2200/009 ,  H04B1/26 ,  H04L25/085

摘要： The present invention relates generally to communications, and more specifically to a method and apparatus for minimizing DC offset and second-order modulation products (IM2 noise) while demodulating RF signals. The principle of the invention can be applied to differential, down-conversion circuits (50) consisting of two differential mixers (54, 56) in series, as follows: a pair of current sources Ia and Ib are used to provide current to positive and negative channels of the first differential mixer (54). Providing current to the amplifying transistors of the first mixer (54) reduces the current drawn through the active mixer switches, reducing the noise generated. The current sources Ia and Ib are trimmed in a complementary manner where Ia=I+Delta1, and Ib=Delta1. The value of ΔI can be determined in a number of manners; for example, it could be established by testing after the circuit has been fabricated, and the value stored on-chip, for future use.

摘要翻译： 本发明一般涉及通信，更具体地涉及一种在解调RF信号的同时最小化DC偏移和二阶调制产物（IM2噪声）的方法和装置。 本发明的原理可以应用于由串联的两个差分混频器（54,56）组成的差分，下变频电路（50），如下所示：使用一对电流源Ia和Ib来提供电流为正和 第一差分混合器（54）的负通道。 向第一混频器（54）的放大晶体管提供电流减少了通过有源混频器开关引起的电流，从而减少了产生的噪声。 电流源Ia和Ib以互补方式修整，其中Ia = I + Delta1，Ib = Delta1。 DeltaI的价值可以通过多种方式确定; 例如，可以通过在电路制造之后进行测试，并将该值存储在芯片上，以备将来使用。

公开(公告)号：US20050226349A1

公开(公告)日：2005-10-13

申请号：US10505414

申请日：2003-02-25

申请人： Tajinder Manku

发明人： Tajinder Manku

IPC分类号： H03D7/16 ,  H04L27/06

CPC分类号： H03D7/16

摘要： There is a need for an inexpensive, high-performance, fully-integrable, multistandard transceiver, which suppresses spurious noise signals. The invention provides a topology that satisfies this need, providing a first mixer for receiving an input signal x(t), and mixing it with a multi-tonal mixing signal φ1 to generate an output signal φ1 x(t), and providing a second mixer for receiving the φ1 x(t) signal, and mixing it with a mono-tonal mixing signal φ2, to generate an output signal φ1 φ2 x(t). The two mixing signals emulate an LO signal because φ1*φ2 has significant power at the frequency of the LO signal being emulated. The topology also includes a power measurement circuit for measuring the power of the output signal φ1 φ2 x(t). This power output signal is used to vary the characteristics of the mono-tonal mixing signal φ2 to reduce the power level of said output signal.

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。 本发明提供了满足这种需求的拓扑结构，提供用于接收输入信号x（t）的第一混频器，并将其与多音调混合信号phi 1混合以产生输出信号phi 1 x（t），并提供 用于接收phi 1 x（t）信号并将其与单声道混合信号phi2混合的第二混频器，以产生输出信号phi 1 phi2 x（t）。 两个混频信号模拟LO信号，因为phi 1 * phi2在被仿真的LO信号的频率处具有显着的功率。 拓扑结构还包括用于测量输出信号phi 1 phi2 x（t）的功率的功率测量电路。 该功率输出信号用于改变单声道混合信号phi 2的特性，以降低所述输出信号的功率电平。

公开(公告)号：US5602487A

公开(公告)日：1997-02-11

申请号：US294602

申请日：1994-08-22

申请人： Tajinder Manku

发明人： Tajinder Manku

IPC分类号： G01R27/26

CPC分类号： G01R27/2605

摘要： A capacitance measuring device comprises a MOS transistor having a source, drain, and gate; a first capacitor C.sub.1 connected between said gate and said drain so that charge is coupled from said drain onto said gate; and a second capacitor C.sub.2 for connection to a source of gate voltage V.sub.G and connected to said gate. One of the first and second capacitors has a known capacitance and the other has an unknown capacitance. A DC voltage is supplied between the source and drain to cause a saturation current to flow therebetween. The ratio .delta.V.sub.G /.delta.V.sub.d for the saturation current, where V.sub.G is the applied gate voltage, and V.sub.d is the drain voltage is determined and the unknown capacitance is derived from the relationship C.sub.1 /C.sub.2 =-.delta.V.sub.G /.delta.V.sub.d.

摘要翻译： 电容测量装置包括具有源极，漏极和栅极的MOS晶体管; 连接在所述栅极和所述漏极之间的第一电容器C1，使得电荷从所述漏极耦合到所述栅极上; 以及用于连接到栅极电压VG源并连接到所述栅极的第二电容器C2。 第一和第二电容器之一具有已知的电容，另一个具有未知的电容。 在源极和漏极之间提供直流电压，以使饱和电流在它们之间流动。 确定饱和电流（其中VG为施加的栅极电压）和Vd为漏极电压的饱和电流的比值ΔGV/ΔVd，并且从C1 / C2 =-ΔGV/ΔDd的关系导出未知电容。

公开(公告)号：US08724736B2

公开(公告)日：2014-05-13

申请号：US13062604

申请日：2009-09-08

申请人： Abdellatif Bellaouar ,  See Taur Lee ,  Sher Jiun Fang ,  Sherif H. K. Embabi ,  Tajinder Manku

发明人： Abdellatif Bellaouar ,  See Taur Lee ,  Sher Jiun Fang ,  Sherif H. K. Embabi ,  Tajinder Manku

IPC分类号： H04L25/49

CPC分类号： H03F3/245 ,  H03F1/0261 ,  H03F1/0277 ,  H03F3/195 ,  H03F3/211 ,  H03F3/45188 ,  H03F3/45659 ,  H03F3/72 ,  H03F2200/372 ,  H03F2200/451 ,  H03F2200/541 ,  H03F2203/21142 ,  H03F2203/21175 ,  H03F2203/21178 ,  H03F2203/45418 ,  H03F2203/45424 ,  H03F2203/45544 ,  H03F2203/45634 ,  H03F2203/45726 ,  H03F2203/7236 ,  H03G3/001

摘要： A transmitter architecture having a single signal path or hardware to cover WCDMA/EDGE/GSM applications, and requires no SAW at the transmitter outputs. The transmitter architecture allows for a transmit convergence feature. A passive mixer with unique driver and furthermore using native devices available from the CMOS process for the mixer cores enables low voltage and low power design, low output noise and high linearity. A digital variable gain amplifier has the capability to cover wide output dynamic range operated from low supply voltage and interfaced digitally with the baseband circuit without DAC. A single transformer is used to combine the outputs from the WCDMA/EDGE and GSM drivers and subsequently convert the differential signal paths into a single-ended signal. RF switches are used to divert the output from the transformer to different bands and applications.

摘要翻译： 具有覆盖WCDMA / EDGE / GSM应用的单个信号路径或硬件的发射机架构，并且在发射机输出端不需要SAW。 发射机架构允许发送收敛功能。 具有独特驱动器的无源混频器，此外还可使用CMOS工艺的混频器内核提供的本机器件，可实现低电压和低功耗设计，低输出噪声和高线性度。 数字可变增益放大器具有覆盖从低电源电压操作的宽输出动态范围并与没有DAC的基带电路数字接口的能力。 单个变压器用于组合来自WCDMA / EDGE和GSM驱动器的输出，随后将差分信号路径转换为单端信号。 RF开关用于将变压器的输出转移到不同的频带和应用。

公开(公告)号：US08707389B2

公开(公告)日：2014-04-22

申请号：US12631397

申请日：2009-12-04

申请人： Tajinder Manku

发明人： Tajinder Manku

IPC分类号： G06F21/00

CPC分类号： H04L67/327 ,  H04L12/5691 ,  H04L45/22 ,  H04L47/14 ,  H04L2012/5624 ,  H04W28/065 ,  H04W28/08 ,  H04W72/1273 ,  H04W76/16 ,  H04W80/00 ,  H04W88/10 ,  H04W88/182

摘要： A method for transmitting data between a client and a server is provided. The method comprising the following steps. The data is segmented into a plurality of data packets, which are scheduled to be transmitted via different ones of a plurality of access points. Each of the plurality of access points is configured to communicate with the client using a different protocol and communicate with the server using a different network path. Each of the plurality of data packets is transmitted between the client and the server via the scheduled access point. A client device and proxy server configured to implement the method are also provided, as is a computer readable medium having stored thereon instructions for implementing the method.

摘要翻译： 提供了一种在客户端和服务器之间传输数据的方法。 该方法包括以下步骤。 数据被分割成多个数据分组，其被调度为经由多个接入点中的不同接入点发送。 多个接入点中的每一个被配置为使用不同的协议与客户端进行通信，并使用不同的网络路径与服务器进行通信。 多个数据分组中的每一个经由调度的接入点在客户机和服务器之间传送。 还提供被配置为实现该方法的客户端设备和代理服务器，以及其上存储有用于实现该方法的指令的计算机可读介质。

公开(公告)号：US08509290B2

公开(公告)日：2013-08-13

申请号：US12520448

申请日：2007-12-21

申请人： Abdellatif Bellaouar ,  Tajinder Manku

发明人： Abdellatif Bellaouar ,  Tajinder Manku

IPC分类号： H04B1/38

CPC分类号： H03G3/3047 ,  H04B2001/0416

摘要： A closed loop power output calibration system for variable power output wireless devices. The wireless device includes a wireless transceiver having a transmit core coupled to a discrete power amplifier. Power detection circuitry formed in the wireless transceiver provides a detected power level of the power amplifier, and a reference power level, both of which are converted to digital signals using existing I and Q signal analog to digital converters in the receiver core. The digital signals are processed to cancel power distortion and temperature effects to provide a resulting power feedback signal. Corrective control signals are generated in response to the power feedback signal relative to a desired power output level. The gain in the transmit core is then adjusted in response to the corrective control signals such that the power amplifier outputs the target output power level.

摘要翻译： 一种用于可变功率输出无线设备的闭环功率输出校准系统。 无线设备包括具有耦合到分立功率放大器的发射芯的无线收发器。 在无线收发器中形成的功率检测电路提供功率放大器的检测功率电平和参考功率电平，两者都使用接收机核心中现有的I和Q信号模数转换器转换成数字信号。 处理数字信号以消除功率失真和温度影响，以提供最终的功率反馈信号。 响应于功率反馈信号相对于期望的功率输出电平产生校正控制信号。 然后响应于校正控制信号调整发送内核中的增益，使得功率放大器输出目标输出功率电平。