公开(公告)号：WO2013071156A1

公开(公告)日：2013-05-16

申请号：PCT/US2012/064513

申请日：2012-11-09

Applicant: QUALCOMM INCORPORATED

Inventor： FERNANDO, Udara C.

IPC: H04L27/38 ,  H03D1/22 ,  H03D3/00 ,  H04B1/10 ,  H04B1/30 ,  H04B1/74

CPC classification number: H04L27/38 ,  H03D1/2245 ,  H03D3/007 ,  H04B1/1027 ,  H04B1/30 ,  H04B1/74

Abstract: Techniques for dynamically selecting a number of downconversion paths used in a variety of receiver, wideband receiver architectures, for example, zero-IF or low-IF. In an exemplary embodiment, a first downconversion path is configured to downconvert a signal derived from an RF signal using a first mixing frequency. A second downconversion path is further configured to downconvert a signal derived from the RF signal using a second mixing frequency distinct from the first mixing frequency. The second downconversion path may be selectively enabled or disabled based on a detected level of an interferer in the frequency spectrum. For example, if the interferer level is less than a predetermined threshold, a fewer number of downconversion paths, for example, one path, may be enabled. If the interferer level is greater than a predetermined threshold, then a greater number of downconversion paths, for example, two or more paths, may be enabled.

Abstract translation: 用于动态选择用于各种接收机宽带接收机架构中的多个下变频路径的技术，例如零中频或低中频。 在示例性实施例中，第一下变频路径被配置为使用第一混频器对从RF信号导出的信号进行下变频。 第二下变频路径还被配置为使用与第一混频器不同的第二混频器对从RF信号导出的信号进行下变频。 可以基于检测到的频谱中的干扰源的水平来选择性地使能或禁用第二下变频路径。 例如，如果干扰源级别小于预定阈值，则可以启用较少数量的下变频路径，例如一条路径。 如果干扰源级别大于预定阈值，则可以启用更多数量的下变频路径，例如两条或更多条路径。

公开(公告)号：WO2013149224A2

公开(公告)日：2013-10-03

申请号：PCT/US2013/034737

申请日：2013-03-30

Applicant: QUALCOMM INCORPORATED

Inventor： FERNANDO, Udara C. ,  SEE, Puay Hoe ,  KRISHNAN, Sudarsan

IPC: H04B17/00

CPC classification number: H04B17/24 ,  H04B17/0085 ,  H04B17/13 ,  H04B17/21

Abstract: A wireless communication device configured for automatic calibration is described. The wireless communication device includes a testing load. The wireless communication device also includes a transceiver chip. The wireless communication device further includes a radio frequency connector switch that couples circuitry on the transceiver chip to one of the testing load, an external load and a radiating element.

Abstract translation: 描述配置用于自动校准的无线通信设备。 无线通信设备包括测试负载。 无线通信设备还包括收发器芯片。 无线通信设备还包括射频连接器开关，该开关将收发器芯片上的电路耦合到测试负载，外部负载和辐射元件中的一个。

公开(公告)号：WO2013152334A1

公开(公告)日：2013-10-10

申请号：PCT/US2013/035526

申请日：2013-04-05

Applicant: QUALCOMM INCORPORATED

Inventor： FERNANDO, Udara C.

IPC: H04B1/10 ,  H04B1/30 ,  H04L5/00 ,  H04L27/38

CPC classification number: H04L5/001 ,  H04B1/1027 ,  H04B1/30 ,  H04B2001/1072 ,  H04L27/3863

Abstract: Techniques for using one or multiple downconverters to receive multiple transmissions sent on multiple carriers are disclosed. In an exemplary design, an apparatus includes first and second downconverters. The first downconverter(750a) downconverts a first radio frequency RF signal when it is selected. The second downconverter (750b) downconverts a second RF signal when it is selected. Each of the first and second RF signals includes multiple transmissions sent on multiple carriers to a wireless device. The first downconverter is selected to perform downconversion for the multipletransmissions when at least one criterion is not met. The first and second downconverters are selected to perform downconversion for the multiple transmissions, based on different mixing frequencies, when the at least one criterion is met. The at least one criterion may relate to imbalance between the multiple carriers, received power of a received RF signal, etc.

Abstract translation: 公开了使用一个或多个下变频器来接收在多个载波上发送的多个传输的技术。 在示例性设计中，装置包括第一和第二下变频器。 第一下变频器（750a）在选择时降频转换第一射频RF信号。 第二下变频器（750b）在选择时下变频第二RF信号。 第一和第二RF信号中的每一个包括在多个载波上发送到无线设备的多个传输。 当不满足至少一个标准时，选择第一个下变频器对多个传输进行下转换。 当满足至少一个标准时，第一和第二下变频器被选择为基于不同的混合频率对多个传输执行下变频。 所述至少一个准则可以涉及多个载波之间的不平衡，接收的RF信号的接收功率等

公开(公告)号：WO2014100048A1

公开(公告)日：2014-06-26

申请号：PCT/US2013/075882

申请日：2013-12-17

Applicant: QUALCOMM INCORPORATED

Inventor： FERNANDO, Udara C. ,  CHANG, Li-Chung ,  CHELLAPPA, Vijay K. ,  BOSSU, Frederic ,  HUMNABADKAR, Ketan ,  SAHOTA, Gurkanwal Singh

IPC: H04B17/00

CPC classification number: H04B17/21

Abstract: Techniques for calibrating a receiver based on a local oscillator (LO) signal from another receiver are disclosed. In an exemplary design, an apparatus (e.g., a wireless device or an integrated circuit) includes first and second local oscillator (LO) generators. The first LO generator generates a first LO signal used by a first receiver for frequency downconversion. The second LO generator generates a second LO signal used by a second receiver for frequency downconversion in a first operating mode. The second LO signal is used to generate a test signal for the first receiver in a second operating mode. The second LO signal may be provided as the test signal or may be amplitude modulated with a modulating signal to generate the test signal. The test signal may be used to calibrate residual sideband (RSB), second order input intercept point (IIP2), receive path gain, etc.

Abstract translation: 公开了基于来自另一接收机的本地振荡器（LO）信号来校准接收机的技术。 在示例性设计中，装置（例如，无线装置或集成电路）包括第一和第二本地振荡器（LO）发生器。 第一LO发生器产生用于频率下变频的第一接收机使用的第一LO信号。 第二LO发生器在第一操作模式中产生由第二接收机用于频率下变频的第二LO信号。 第二LO信号用于在第二操作模式下为第一接收机生成测试信号。 第二LO信号可以作为测试信号提供，或者可以用调制信号进行幅度调制以产生测试信号。 测试信号可用于校准残余边带（RSB），二阶输入截点（IIP2），接收路径增益等。

公开(公告)号：WO2013163474A1

公开(公告)日：2013-10-31

申请号：PCT/US2013/038288

申请日：2013-04-25

Applicant: QUALCOMM INCORPORATED

Inventor： FERNANDO, Udara C. ,  GUDEM, Prasad Srinivasa Siva

IPC: H04B1/00 ,  H04L5/00

CPC classification number: H04B1/005 ,  H04B1/0057 ,  H04L5/001

Abstract: A transceiver for receiving multiple desired signals is described. The transceiver includes a first downconverter that receives a first received signal. The transceiver also includes a second downconverter that receives the first received signal. The transceiver further includes a first adder that receives an output of the first downconverter and a second received signal. The transceiver also includes a second adder that receives an output of the second downconverter.

Abstract translation: 描述了用于接收多个期望信号的收发器。 收发器包括接收第一接收信号的第一下变频器。 收发器还包括接收第一接收信号的第二下变频器。 收发器还包括第一加法器，其接收第一下变频器的输出和第二接收信号。 收发器还包括接收第二下变频器的输出的第二加法器。

公开(公告)号：WO2014120895A1

公开(公告)日：2014-08-07

申请号：PCT/US2014/013794

申请日：2014-01-30

Applicant: QUALCOMM INCORPORATED

Inventor： FERNANDO, Udara C. ,  GUDEM, Prasad Srinivasa Siva

IPC: H04B1/00

CPC classification number: H04W52/0245 ,  H04B1/0007 ,  H04B1/0021 ,  H04B1/0025 ,  H04B1/0028 ,  Y02D70/00 ,  Y02D70/1262 ,  Y02D70/40

Abstract: A wireless device for receiving wireless signals based on channel conditions is described. The wireless device includes a direct sampling path used when operating in a direct sampling mode. The wireless device also includes a zero intermediate frequency path used when operating in a normal sampling mode. The wireless device further includes a first switch coupling a filter module input to an input of the direct sampling path and an input of the zero intermediate frequency path. The wireless device also includes a second coupling a filter module output to an output of the direct sampling path and an output of the zero intermediate frequency path. The first switch and the second switch are configured to switch between the direct sampling path and the zero intermediate frequency path based on a received signal power.

Abstract translation: 描述了一种基于信道条件接收无线信号的无线设备。 无线设备包括当以直接采样模式操作时使用的直接采样路径。 无线设备还包括在正常采样模式下工作时使用的零中频路径。 无线设备还包括将滤波器模块输入耦合到直接采样路径的输入和零中频路径的输入的第一开关。 无线设备还包括第二耦合滤波器模块输出到直接采样路径的输出和零中频路径的输出。 第一开关和第二开关被配置为基于接收信号功率在直接采样路径和零中间路径之间切换。

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。