公开(公告)号：WO2013003503A3

公开(公告)日：2013-05-02

申请号：PCT/US2012044473

申请日：2012-06-27

Applicant: QUALCOMM INC ,  GUDEM PRASAD SRINIVASA SIVA ,  FERNANDO UDARA C ,  CHANG LI-CHUNG

Inventor： GUDEM PRASAD SRINIVASA SIVA ,  FERNANDO UDARA C ,  CHANG LI-CHUNG

IPC: H04B1/38 ,  H04B1/00

CPC classification number: H04B1/3805 ,  H04B1/005

Abstract: A wireless communication device configured for receiving a multiple carrier signal is described. The wireless communication device includes a primary signal splitting carrier aggregation architecture. The primary signal splitting carrier aggregation architecture includes a primary antenna and a transceiver chip. The primary signal splitting carrier aggregation architecture reuses a first diversity/simultaneous hybrid dual receiver path. The wireless communication device also includes a secondary signal splitting carrier aggregation architecture. The secondary signal splitting carrier aggregation architecture includes a secondary antenna and a receiver chip. The secondary signal splitting carrier aggregation architecture reuses a second diversity/simultaneous hybrid dual receiver path.

Abstract translation: 描述了被配置为接收多载波信号的无线通信设备。 无线通信设备包括主信号分离载波聚合体系结构。 主信号分离载波聚合架构包括主天线和收发芯片。 主信号分离载波聚合架构重新使用第一分集/同步混合双接收机路径。 无线通信设备还包括辅助信号分离载波聚合架构。 次级信号分离载波聚合架构包括辅助天线和接收机芯片。 次信号分离载波聚合架构重新使用第二分集/同步混合双接收机路径。

公开(公告)号：WO2010132870A1

公开(公告)日：2010-11-18

申请号：PCT/US2010/035079

申请日：2010-05-17

Applicant: QUALCOMM Incorporated ,  CHANG, Li-Chung ,  BHAGAT, Maulin P. ,  LEE, Hanil ,  SRIDHARA, Ravi

Inventor： CHANG, Li-Chung ,  BHAGAT, Maulin P. ,  LEE, Hanil ,  SRIDHARA, Ravi

IPC: H03D7/14

CPC classification number: H03D7/1466 ,  H03D7/1458 ,  H03D7/165 ,  H03D2200/0082

Abstract: A receiver with a balanced I/Q transformer is described. In an exemplary design, the receiver includes an LNA that amplifies a received RF signal and provides a single-ended RF signal to the balanced I/Q transformer. The balanced I/Q transformer includes at least one primary coil and first and second secondary coils. The first secondary coil is magnetically coupled to the at least one primary coil and provides a first differential RF signal to a first mixer. The second secondary coil is magnetically coupled to the at least one primary coil and provides a second differential RF signal to a second mixer. The first and second mixers downconvert the first and second differential RF signals with I and Q LO signals, respectively, and provide differential I and Q downconverted signals. The primary and secondary coils may be fabricated on two conductive layers of an integrated circuit.

Abstract translation: 描述了具有平衡I / Q变压器的接收机。 在示例性设计中，接收机包括放大接收到的RF信号并向平衡I / Q变换器提供单端RF信号的LNA。 平衡I / Q变压器包括至少一个初级线圈和第一和第二次级线圈。 第一次级线圈磁耦合到至少一个初级线圈，并向第一混频器提供第一差分RF信号。 第二次级线圈磁耦合到至少一个初级线圈，并将第二差分RF信号提供给第二混频器。 第一和第二混频器分别用I和Q LO信号下变频第一和第二差分RF信号，并提供差分I和Q下变频信号。 初级和次级线圈可以制造在集成电路的两个导电层上。

公开(公告)号：WO2009129330A1

公开(公告)日：2009-10-22

申请号：PCT/US2009/040701

申请日：2009-04-15

Applicant: QUALCOMM INCORPORATED ,  GUDEM, Prasad, S. ,  CABANILLAS, Jose ,  CHANG, Li-Chung ,  LIU, Li

Inventor： GUDEM, Prasad, S. ,  CABANILLAS, Jose ,  CHANG, Li-Chung ,  LIU, Li

IPC: H04B1/10

CPC classification number: H04B1/109 ,  H03F1/3205 ,  H03F1/3211 ,  H03F3/193 ,  H03F3/245

Abstract: A receiver includes a jammer detector configured to detect the presence or the absence of jamming in a communication signal within a gain state. The receiver further includes an amplifier configured to amplify the communication signal in a high linearity receiving mode or a low linearity receiving mode, wherein the high linearity receiving mode corresponds with a lower gain for the gain state in the amplifier relative to that of the low linearity receiving mode. In addition, the receiver includes a processing unit coupled to the jammer detector, the processing unit being configured to control the amplifier to amplify the communication signal in either the high linearity receiving mode or the low linearity receiving mode, based on the output of the jammer detector detecting the presence or the absence of jamming in the communication signal. A method is also provided for processing a communication signal in a receiver.

Abstract translation: 接收机包括干扰检测器，其被配置为检测在增益状态内的通信信号中存在或不存在干扰。 接收器还包括放大器，被配置为以高线性度接收模式或低线性度接收模式放大通信信号，其中高线性度接收模式对应于放大器相对于低线性度的增益状态的较低增益 接收模式。 此外，接收机包括耦合到干扰检测器的处理单元，该处理单元被配置为基于干扰信号的输出来控制放大器以高线性接收模式或低线性接收模式放大通信信号 检测器检测通信信号中是否存在干扰。 还提供了一种用于处理接收机中的通信信号的方法。

公开(公告)号：WO2009088813A3

公开(公告)日：2009-07-16

申请号：PCT/US2008/088382

申请日：2008-12-27

Applicant: QUALCOMM Incorporated ,  CHANG, Li-chung

Inventor： CHANG, Li-chung

IPC: H03F1/32

Abstract: A modified derivative superposition (MDS) low noise amplifier (LNA) includes a main current path and a cancel current path. Third-order distortion in the cancel path is used to cancel third-order distortion in the main path. In one novel aspect, there is a separate source degeneration inductor for each of the two current paths, thereby facilitating tuning of one current path without affecting the other current path. In a second novel aspect, a deboost current path is provided that does not pass through the LNA load. The deboost current allows negative feedback to be increased without generating headroom problems. In a third novel aspect, the cancel current path and/or deboost current path is programmably disabled to reduce power consumption and improve noise figure in operational modes that do not require high linearity.

公开(公告)号：WO2008112800A3

公开(公告)日：2008-09-18

申请号：PCT/US2008/056711

申请日：2008-03-12

Applicant: QUALCOMM INCORPORATED ,  CHANG, Li-Chung ,  GUDEM, Prasad S. ,  CABANILLAS, Jose

Inventor： CHANG, Li-Chung ,  GUDEM, Prasad S. ,  CABANILLAS, Jose

IPC: H04B1/52 ,  H04B1/10

Abstract: This disclosure describes techniques for reducing adverse effects of TX signal leakage in a full-duplex, wireless communication device. The techniques make use of a notch filter to reject TX signal leakage in a signal processed in the RX path of the wireless communication device. The notch filter may be constructed as a complex notch filter using passive resistor and capacitor components to produce a notch frequency that attenuates TX signal leakage components in a desired signal. The notch filter may be applied to a down-converted, baseband signal produced by a passive mixer.

公开(公告)号：WO2013003503A2

公开(公告)日：2013-01-03

申请号：PCT/US2012/044473

申请日：2012-06-27

Applicant: QUALCOMM Incorporated ,  GUDEM, Prasad Srinivasa Siva ,  FERNANDO, Udara C. ,  CHANG, Li-Chung

Inventor： GUDEM, Prasad Srinivasa Siva ,  FERNANDO, Udara C. ,  CHANG, Li-Chung

IPC: H04B1/38 ,  H04B1/00

CPC classification number: H04B1/3805 ,  H04B1/005

Abstract: A wireless communication device configured for receiving a multiple carrier signal is described. The wireless communication device includes a primary signal splitting carrier aggregation architecture. The primary signal splitting carrier aggregation architecture includes a primary antenna and a transceiver chip. The primary signal splitting carrier aggregation architecture reuses a first diversity/simultaneous hybrid dual receiver path. The wireless communication device also includes a secondary signal splitting carrier aggregation architecture. The secondary signal splitting carrier aggregation architecture includes a secondary antenna and a receiver chip. The secondary signal splitting carrier aggregation architecture reuses a second diversity/simultaneous hybrid dual receiver path.

Abstract translation: 描述了配置用于接收多载波信号的无线通信设备。 无线通信设备包括主信号拆分载波聚合架构。 主信号拆分载波聚合架构包括主天线和收发器芯片。 主信号拆分载波聚合体系结构重用第一分集/同时混合双接收机路径。 无线通信设备还包括辅助信号拆分载波聚合架构。 次要信号拆分载波聚合架构包括次要天线和接收器芯片。 次要信号拆分载波聚合体系结构重用第二分集/同时混合双接收机路径。

公开(公告)号：WO2011019850A1

公开(公告)日：2011-02-17

申请号：PCT/US2010/045223

申请日：2010-08-11

Applicant: QUALCOMM INCORPORATED ,  LEE, Hanil ,  CHANG, Li-Chung

Inventor： LEE, Hanil ,  CHANG, Li-Chung

IPC: H03F1/22 ,  H03F1/32 ,  H03F3/72 ,  H03F3/21 ,  H03F3/24 ,  H03F3/45 ,  H03G1/00 ,  H04B1/10

CPC classification number: H03F1/3205 ,  H03F1/223 ,  H03F1/3211 ,  H03F3/211 ,  H03F3/245 ,  H03F3/45179 ,  H03F3/72 ,  H03F2200/294 ,  H03F2200/492 ,  H03F2200/541 ,  H03F2203/45302 ,  H03F2203/45311 ,  H03F2203/45386 ,  H03F2203/45394 ,  H03G1/0029 ,  H04B1/109

Abstract: Amplifiers with improved linearity and noise performance are described. In an exemplary design, an apparatus includes first through sixth transistors. The first transistor (320) receives an input signal and provides an amplified signal. The second transistor (360) receives the amplified signal and provides signal drive for an output signal. The third transistor (310) receives the input signal and provides an intermediate signal. The fourth transistor (340) provides bias for the third transistor (310) in a high linearity mode. The fifth transistor (350) receives the intermediate signal and provides signal drive for the output signal in a low linearity mode. The third (310) and fourth (340) transistors form a deboost path that is enabled in the high linearity mode to improve linearity. The third (310) and fifth (350) transistors form a cascode path that is enabled in the low linearity mode to improve gain and noise performance. The sixth transistor (330) generates distortion component used to cancel distortion component from the first transistor (320)

Abstract translation: 描述了具有改善的线性和噪声性能的放大器。 在示例性设计中，装置包括第一至第六晶体管。 第一晶体管（320）接收输入信号并提供放大信号。 第二晶体管（360）接收放大的信号并为输出信号提供信号驱动。 第三晶体管（310）接收输入信号并提供中间信号。 第四晶体管（340）以高线性模式为第三晶体管（310）提供偏置。 第五晶体管（350）接收中间信号，并以低线性模式为输出信号提供信号驱动。 第三（310）和第四（340）晶体管形成在高线性模式下启用的去桥路径，以提高线性度。 第三（310）和第五（350）晶体管形成在低线性模式下使能的共源共栅路径，以改善增益和噪声性能。 第六晶体管（330）产生用于消除来自第一晶体管（320）的失真分量的失真分量，

公开(公告)号：WO2009088813A2

公开(公告)日：2009-07-16

申请号：PCT/US2008/088382

申请日：2008-12-27

Applicant: QUALCOMM Incorporated ,  CHANG, Li-chung

Inventor： CHANG, Li-chung

IPC: H03F1/32

CPC classification number: H03F1/3205 ,  H03F1/223 ,  H03F1/3252 ,  H03F3/72 ,  H03F2200/492

Abstract: A modified derivative superposition (MDS) low noise amplifier (LNA) includes a main current path and a cancel current path. Third-order distortion in the cancel path is used to cancel third-order distortion in the main path. In one novel aspect, there is a separate source degeneration inductor for each of the two current paths, thereby facilitating tuning of one current path without affecting the other current path. In a second novel aspect, a deboost current path is provided that does not pass through the LNA load. The deboost current allows negative feedback to be increased without generating headroom problems. In a third novel aspect, the cancel current path and/or deboost current path is programmably disabled to reduce power consumption and improve noise figure in operational modes that do not require high linearity.

Abstract translation: 修正导数叠加（MDS）低噪声放大器（LNA）包括主电流路径和消除电流路径。 取消路径中的三阶失真用于消除主路径中的三阶失真。 在一个新颖的方面，对于两个电流路径中的每一个，存在单独的源极退化电感器，从而有助于调谐一个电流路径而不影响另一个电流路径。 在第二个新颖的方面，提供了不穿过LNA负载的去桥电流路径。 去抖动电流允许增加负反馈而不产生余量问题。 在第三个新颖的方面，消除电流路径和/或去桥电流路径可编程地被禁用以降低功耗并改善不需要高线性度的操作模式中的噪声系数。

公开(公告)号：WO2008112800A2

公开(公告)日：2008-09-18

申请号：PCT/US2008056711

申请日：2008-03-12

Applicant: QUALCOMM INC ,  CHANG LI-CHUNG ,  GUDEM PRASAD S ,  CABANILLAS JOSE

Inventor： CHANG LI-CHUNG ,  GUDEM PRASAD S ,  CABANILLAS JOSE

IPC: H04B1/52 ,  H04B1/10

CPC classification number: H04B1/525 ,  H04B1/1036

Abstract: This disclosure describes techniques for reducing adverse effects of TX signal leakage in a full-duplex, wireless communication device. The techniques make use of a notch filter to reject TX signal leakage in a signal processed in the RX path of the wireless communication device. The notch filter may be constructed as a complex notch filter using passive resistor and capacitor components to produce a notch frequency that attenuates TX signal leakage components in a desired signal. The notch filter may be applied to a down-converted, baseband signal produced by a passive mixer.

Abstract translation: 本公开描述了用于减少全双工无线通信设备中的TX信号泄漏的不利影响的技术。 这些技术利用陷波滤波器来抑制在无线通信设备的RX路径中处理的信号中的TX信号泄漏。 陷波滤波器可以被构造为使用无源电阻器和电容器部件的复陷波滤波器，以产生在所需信号中衰减TX信号泄漏分量的陷波频率。 陷波滤波器可以应用于由无源混频器产生的下变频的基带信号。

公开(公告)号：WO2013003820A1

公开(公告)日：2013-01-03

申请号：PCT/US2012/045129

申请日：2012-06-29

Applicant: QUALCOMM Incorporated ,  GUDEM, Prasad Srinivasa Siva ,  KADOUS, Tamer Adel ,  VERMA, Sumit ,  CHANG, Li-Chung

Inventor： GUDEM, Prasad Srinivasa Siva ,  KADOUS, Tamer Adel ,  VERMA, Sumit ,  CHANG, Li-Chung

IPC: H04B1/10 ,  H04B1/52

CPC classification number: H04B1/525 ,  H04B1/109 ,  H04B1/70712

Abstract: A receiver with bypass mode for improved sensitivity is disclosed. An apparatus is provided that includes a non-bypass signal path coupled to a receiver, the non-bypass signal path comprising a filter, a bypass signal path coupled to the receiver, the bypass signal path configure to bypass the filter, and a switch configured to couple an antenna to the non-bypass signal path during time intervals when signals transmitted by a related local transmitter are transmitted with a signal power that exceeds a threshold, and to couple the antenna to the bypass signal path during other time intervals. In another aspect, the switch is configured to couple the antenna to the non-bypass signal path during time intervals when a jamming signal in a selected frequency range is received with a signal power that exceeds a threshold, and to couple the antenna to the bypass signal path during other time intervals.

Abstract translation: 公开了一种具有旁路模式以提高灵敏度的接收机。 提供了一种装置，其包括耦合到接收器的非旁路信号路径，非旁路信号路径包括滤波器，耦合到接收器的旁路信号路径，配置为绕过滤波器的旁路信号路径和配置的开关 在由相关本地发射机发射的信号以超过阈值的信号功率发射的时间间隔内将天线耦合到非旁路信号路径，并且在其它时间间隔期间将天线耦合到旁路信号路径。 在另一方面，所述开关被配置为在以超过阈值的信号功率接收到所选频率范围内的干扰信号的时间间隔期间将天线耦合到非旁路信号路径，并且将天线耦合到旁路 信号路径在其他时间间隔。