公开(公告)号：US07710185B2

公开(公告)日：2010-05-04

申请号：US11569021

申请日：2005-05-12

Applicant: Tajinder Manku

Inventor： Tajinder Manku

IPC: G06F7/44 ,  G06G7/16

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：US20100027711A1

公开(公告)日：2010-02-04

申请号：US12520486

申请日：2007-12-14

Applicant: Tajinder Manku ,  Abdellatif Bellaouar

Inventor： Tajinder Manku ,  Abdellatif Bellaouar

IPC: H04L27/00 ,  H03M1/66

CPC classification number: H03M1/68 ,  H03M1/745 ,  H03M3/50 ,  H03M7/3004

Abstract: A digital linear transmitter for digital to analog conversion of a radio frequency signal. The transmitter includes a delta sigma (ΔΣ) digital to analog converter (DAC) and a weighted signal digital to analog converter in the transmit path of a wireless device to reduce reliance on relatively large analog components. The ΔΣ DAC converts the lowest significant bits of the oversampled signal while the weighted signal digital to analog converter converts the highest significant bits of the oversampled signal. The transmitter core includes components for providing an oversampled modulated digital signal which is then subjected to first order filtering of the oversampled signal prior to generating a corresponding analog signal. The apparatus and method reduces analog components and increases digital components in transmitter core architecture of wireless RF devices.

Abstract translation: 一种用于数字到模拟转换射频信号的数字线性发射机。 发射机在无线设备的发射路径中包括Δ西格玛（DeltaSigma）数模转换器（DAC）和加权信号数模转换器，以减少对相对大的模拟组件的依赖。 DeltaSigma DAC转换过采样信号的最低有效位，而加权信号数模转换器转换过采样信号的最高有效位。 发射机核心包括用于提供过采样的调制数字信号的组件，然后在产生相应的模拟信号之前对过采样信号进行一阶滤波。 该装置和方法减少了模拟组件并增加了无线RF设备的发射机核心架构中的数字组件。

公开(公告)号：US20100027596A1

公开(公告)日：2010-02-04

申请号：US12520448

申请日：2007-12-21

Applicant: Abdellatif Bellaouar ,  Tajinder Manku

Inventor： Abdellatif Bellaouar ,  Tajinder Manku

IPC: H04B1/38

CPC classification number: H03G3/3047 ,  H04B2001/0416

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US20070223615A1

公开(公告)日：2007-09-27

申请号：US11387925

申请日：2006-03-24

Applicant: Sathwant Dosanjh ,  Tajinder Manku ,  Alan Holden

Inventor： Sathwant Dosanjh ,  Tajinder Manku ,  Alan Holden

IPC: H04L1/02 ,  H04B1/00

CPC classification number: H04B1/50 ,  H04B1/0057

Abstract: A transceiver interface architecture where the same RF transceiver can be used in wireless devices that support any number of standards, with or without receive diversity implementation. Each input port of the RF transceiver can be shared by a number of input signals, which effectively expands the number of available input ports. Input port sharing can be realized with virtual ports that receive two or more input signals and selectively pass one signal to the physical input port. The use of virtual ports allows for flexible wireless design implementations using the same RF transceiver, and in particular, for receive diversity implementations that inherently require dedicated input ports. The use of low cost and small area virtual ports obviates the need for larger and more costly RF receivers.

Abstract translation: 收发器接口架构，其中相同的RF收发器可以在支持任何数量的标准的无线设备中使用，具有或不具有接收分集实现。 RF收发器的每个输入端口可以由多个输入信号共享，这有效地扩展了可用输入端口的数量。 可以通过接收两个或更多输入信号的虚拟端口实现输入端口共享，并选择性地将一个信号传递到物理输入端口。 虚拟端口的使用允许使用相同的RF收发器的灵活的无线设计实现，并且特别地，用于固有地需要专用输入端口的接收分集实现。 使用低成本和小面积的虚拟端口消除了对更大和更昂贵的RF接收机的需要。

公开(公告)号：US20050134392A1

公开(公告)日：2005-06-23

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: H03B5/04 ,  H03B5/12 ,  H03L7/099 ,  H03L7/00

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：US06867665B2

公开(公告)日：2005-03-15

申请号：US09934339

申请日：2001-08-21

Applicant: Tajinder Manku ,  Bish Ray

Inventor： Tajinder Manku ,  Bish Ray

IPC: H01F10/00 ,  H01F19/04 ,  H01L27/00 ,  H01P1/20 ,  H03H7/07 ,  H03H11/04 ,  H03H7/00

CPC classification number: H03H7/07

Abstract: An integrated RF filter for use at microwave frequencies comprising: an integrated circuit inductor with connected integrated circuit capacitors, arranged as a tank circuit, and an integrated circuit shunt resistor; the inductor, capacitors and resistor being interconnected in a bridge-T filter arrangement.

Abstract translation: 一种用于微波频率的集成RF滤波器，包括：具有连接的集成电路电容器的集成电路电感器，布置为储能电路，以及集成电路分流电阻器; 电感器，电容器和电阻器以桥式T滤波器布置互连。

公开(公告)号：US06639447B2

公开(公告)日：2003-10-28

申请号：US10094324

申请日：2002-03-08

Applicant: Tajinder Manku ,  Javad Khajehpour

Inventor： Tajinder Manku ,  Javad Khajehpour

IPC: G06F744

CPC classification number: H03D7/1441 ,  H03D7/1458 ,  H03D7/1466 ,  H03D2200/0025 ,  H03D2200/0084 ,  H03D2200/0088

Abstract: The invention is implemented in the form of modifications to a Gilbert mixer circuit. The modifications alleviate disadvantages and problems introduced because of low voltage power supply typically found in low-power devices such as portable cellular phones. In addition to improving the linearity performance, the new design also provides good matching between I and Q signals, and decreases the switching noise in the active mixer by reducing the switching current. The invention can be applied to both single stage and dual mixers to give low noise performance and Automatic Gain Control (AGC).

Abstract translation: 本发明以对Gilbert混频器电路的修改的形式实现。 这些修改减轻了由于低功率设备（例如便携式蜂窝电话）中典型地出现的低电压电源而引入的缺点和问题。 除了提高线性性能之外，新设计还提供了I和Q信号之间的良好匹配，并通过降低开关电流来降低有源混频器中的开关噪声。 本发明可以应用于单级和双重混频器，以提供低噪声性能和自动增益控制（AGC）。