公开(公告)号：US20100029228A1

公开(公告)日：2010-02-04

申请号：US12520518

申请日：2007-12-20

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

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

IPC: H04B1/04

CPC classification number: H03G3/3047

Abstract: 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.

Abstract translation: 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

Applicant: Tajinder Manku

Inventor： Tajinder Manku

IPC: H03F1/32

CPC classification number: 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

Abstract: 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.

Abstract translation: 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

Applicant: Volodymyr Yavorskyy ,  Tajinder Manku ,  James Wei

Inventor： Volodymyr Yavorskyy ,  Tajinder Manku ,  James Wei

IPC: H03B5/00

CPC classification number: H03B5/04 ,  H03B5/1212 ,  H03B5/1228 ,  H03B5/124 ,  H03B5/1293 ,  H03B2200/0088 ,  H03L7/099

Abstract: 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.

Abstract translation: 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：US07046980B1

公开(公告)日：2006-05-16

申请号：US10070280

申请日：2000-09-01

Applicant: Tajinder Manku ,  Chris Snyder ,  Gareth Weale ,  Lawrence Wong

Inventor： Tajinder Manku ,  Chris Snyder ,  Gareth Weale ,  Lawrence Wong

IPC: H04B1/26

CPC classification number: H04B1/30 ,  H03D3/008 ,  H03D7/163 ,  H03D7/166 ,  H04B1/00 ,  H04B1/0475 ,  H04B2001/0491

Abstract: This patent describes a method and system which overcomes the LO-leakage problem of direct conversion and similar RF transmitters and receivers. To solve this problem a virtual LO™ signal is generated which emulates mixing with a local oscillator (LO) signal. However, 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, so there is no LO component to leak to the output. The invention also does not require sophisticated filters or large capacitors as other designs in the art, so it is fully integratable.

Abstract translation: 该专利描述了克服直接转换和类似RF发射器和接收器的LO泄漏问题的方法和系统。 为了解决这个问题，产生模拟与本地振荡器（LO）信号的混合的虚拟LO（TM）信号。 然而，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（或根本无功率）的信号来构造，因此没有LO分量泄漏到输出端。 本发明也不需要复杂的滤波器或大电容器作为本领域的其他设计，因此它是完全可整合的。

公开(公告)号：US06973297B1

公开(公告)日：2005-12-06

申请号：US10070012

申请日：2000-09-01

Applicant: Tajinder Manku ,  Lawrence Wong ,  Yang Ling

Inventor： Tajinder Manku ,  Lawrence Wong ,  Yang Ling

IPC: H03D3/00 ,  H03D7/16 ,  H04B1/00 ,  H04B1/04 ,  H04B1/30 ,  H04B1/26

CPC classification number: H04B1/30 ,  H03D3/008 ,  H03D7/163 ,  H03D7/166 ,  H04B1/00 ,  H04B1/0475 ,  H04B2001/0491

Abstract: This patent describes a method of removing the LO-leakage and 1/f noise problems associated with direct conversion RF receivers and other demodulators. In order to solve this problem a virtual LO™ signal is generated within the RF signal path 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 LO frequency. Any errors in generating the virtual LO signal are minimized using a closed loop correction scheme.

Abstract translation: 该专利描述了一种去除与直接转换RF接收机和其他解调器相关的LO泄漏和1 / f噪声问题的方法。 为了解决这个问题，在被调谐到输入RF信号的RF信号路径内产生虚拟LO（TM）信号。 虚拟本地振荡器（VLO）信号使用在LO频率下不包含大量功率（或完全没有功率）的信号构成。 使用闭环校正方案来最小化产生虚拟LO信号的任何错误。

公开(公告)号：US20050180528A1

公开(公告)日：2005-08-18

申请号：US10505413

申请日：2003-02-25

Applicant: Tajinder Manku

Inventor： Tajinder Manku

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

CPC classification number: H04B1/28 ,  H03D3/008 ,  H03D7/163 ,  H03D7/166 ,  H04B1/30 ,  H04B2001/0491

Abstract: 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.

Abstract translation: 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

Applicant: Tajinder Manku ,  Stephen Arnold Devison ,  Christopher E. Snyder

Inventor： Tajinder Manku ,  Stephen Arnold Devison ,  Christopher E. Snyder

IPC: H03B100

CPC classification number: H03L7/0995 ,  H03J2200/17 ,  H03L7/18

Abstract: 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.

Abstract translation: 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：US06590438B1

公开(公告)日：2003-07-08

申请号：US10096118

申请日：2002-03-08

Applicant: Tajinder Manku ,  Yang Ling

Inventor： Tajinder Manku ,  Yang Ling

IPC: G11B700

CPC classification number: H03D7/1441 ,  H03D7/1458 ,  H03D7/1491 ,  H03D2200/0025 ,  H03D2200/0084

Abstract: The invention describes improvements to a balanced active demodulator subsystem implemented in Radio Frequency integrated circuit technology that simplify the configuration and set-up of a balanced demodulator section and reduce the labor and time required during manufacture to adjust the demodulation characteristics for optimum performance. The subsystem allows for the selection of various combinations of components during use, during configuration and set-up, or during both phases, and comprises a mixer, a plurality of parallel RF balanced amplifier input stages operationally connected to the mixer, a first set of switches arranged to permit the independent selection and making operable one of the RF balanced amplifier stages, a number of pairs of current sources arranged to provide bias currents for the RF balanced amplifier input stages to reduce the current required to be passed through the balanced demodulator section; and a second set of switches arranged to permit the independent selection and making operable one of said pairs of current sources. The invention provides a balanced demodulator subsystem suitable for use in products in which cost-effectiveness is a critical factor, such as those used in personal communications.

Abstract translation: 本发明描述了在射频集成电路技术中实现的平衡有源解调器子系统的改进，其简化了平衡解调器部分的配置和设置，并减少了制造期间所需的劳动力和时间，以调整解调特性以获得最佳性能。 子系统允许在使用期间，在配置和建立期间或在两个阶段期间选​​择组件的各种组合，并且包括混合器，可操作地连接到混频器的多个并联RF平衡放大器输入级，第一组 开关，其被布置成允许独立选择并使得可操作的RF平衡放大器级中的一个，布置成为RF平衡放大器输入级提供偏置电流的多对电流源，以减少要通过平衡解调器部分的电流 ; 以及第二组开关，其布置成允许独立选择并使得可操作的所述一对电流源中的一个。 本发明提供了一种适用于成本效益是关键因素的产品中的平衡解调器子系统，例如用于个人通信中的那些。

公开(公告)号：US06556025B1

公开(公告)日：2003-04-29

申请号：US09595367

申请日：2000-06-16

Applicant: Arokia Nathan ,  Yong Lu ,  Tajinder Manku

Inventor： Arokia Nathan ,  Yong Lu ,  Tajinder Manku

IPC: G01R2726

CPC classification number: G01R19/2509 ,  G01R27/2605 ,  G01R29/24

Abstract: A method of measuring changes in signal level output of an integrated circuit sensor by providing a direct current (DC) or low frequency (AC) bias to the sensor and placing a floating gate semiconductor device on-chip and coupling the floating gate of the semiconductor device with the sensor. As a result, changes in signal level output of the sensor modulate charge at the gate. The semiconductor device in turn converts the modulated charge at the gate into output signals proportional to the changes in the signal level output. The measurement method provides a resolution in the sub-atto range.

Abstract translation: 一种通过向传感器提供直流（DC）或低频（AC）偏压并且将浮置栅极半导体器件放置在芯片上并耦合半导体的浮置栅极来测量集成电路传感器的信号电平输出的变化的方法 设备与传感器。 结果，传感器的信号电平输出的变化调制门的电荷。 半导体器件又将栅极处的调制电荷转换为与信号电平输出的变化成比例的输出信号。 测量方法提供了分数范围内的分辨率。

公开(公告)号：US06148184A

公开(公告)日：2000-11-14

申请号：US121054

申请日：1998-07-23

Applicant: Tajinder Manku ,  Leonard MacEachern

Inventor： Tajinder Manku ,  Leonard MacEachern

IPC: H03D7/00 ,  H04B1/26 ,  H04B1/30 ,  H04L27/233 ,  H04B1/04

CPC classification number: H04B1/30 ,  H04L27/2332

Abstract: An RF direct down-conversion topology that is insensitive to leakage and device mismatching is presented. According to the system the RF signal is split into two arms with each arm having a mixer. Each mixer has two inputs namely a phase modulated local oscillator signal and the RF information signal. The phase modulated local oscillator signal between each arm differs by a 90 degrees phase shift. The output of the mixers is subtracted and the output of the subtractor is mixed with the phase modulation signal. The output of the third mixer represents the base band. A low pass filter then removes the unwanted signals.

Abstract translation: 提出了一种对泄漏和器件不匹配不敏感的RF直接下变频拓扑。 根据系统，RF信号被分成两个臂，每个臂具有混合器。 每个混频器具有两个输入，即相位调制的本地振荡器信号和RF信息信号。 每个臂之间的相位调制本地振荡器信号相差90度。 减去混频器的输出，减法器的输出与相位调制信号混合。 第三混频器的输出表示基带。 低通滤波器然后去除不需要的信号。