公开(公告)号：WO2020205828A1

公开(公告)日：2020-10-08

申请号：PCT/US2020/025899

申请日：2020-03-31

Applicant: QUALCOMM INCORPORATED

Inventor： CHEN, Wu-Hsin ,  XU, Rui ,  VIGILANTE, Marco ,  LIU, Li ,  WU, Xiaotie

IPC: H03B5/12 ,  H03F1/34

Abstract: In certain aspects, an apparatus includes a transformer including an input inductor and an output inductor, wherein the input inductor is magnetically coupled to the output inductor. The apparatus also includes a transconductance driver configured to drive the input inductor based on an input signal. The apparatus further includes a feedback circuit configured to detect an output voltage swing at the output inductor, generate a regulated voltage at the input inductor, and control the regulated voltage based on the detected output voltage swing.

公开(公告)号：WO2014204706A2

公开(公告)日：2014-12-24

申请号：PCT/US2014/041641

申请日：2014-06-10

Applicant: QUALCOMM INCORPORATED

Inventor： LIU, Li ,  NARATHONG, Chiewcharn

IPC: H04B1/00

CPC classification number: H04W88/06 ,  H04B1/0053 ,  H04B1/403 ,  H04W16/14 ,  H04W72/1215

Abstract: A wireless device supporting concurrent communication with multiple wireless systems of different radio access technologies (RATs) are disclosed. In an exemplary design, an apparatus includes first and second receivers supporting concurrent signal reception from wireless systems of different RATs. The first receiver receives a first downlink signal from a first wireless system of a first RAT. The second receiver receives a second downlink signal from a second wireless system of a second RAT, which is different from the first RAT. The first and second receivers may operate concurrently. The second receiver may be broadband and/or may support carrier aggregation. The apparatus may further include first and second local oscillator (LO) generators to generate LO signals for the first and second receivers, respectively, based on different divider ratios in order to mitigate voltage controlled oscillator (VCO) pulling.

Abstract translation: 公开了一种支持与不同无线电接入技术（RAT）的多个无线系统的并发通信的无线设备。 在示例性设计中，装置包括支持来自不同RAT的无线系统的并发信号接收的第一和第二接收机。 第一接收机从第一RAT的第一无线系统接收第一下行链路信号。 第二接收机从与第一RAT不同的第二RAT的第二无线系统接收第二下行链路信号。 第一和第二接收器可以同时运行。 第二接收机可以是宽带和/或可以支持载波聚合。 该装置还可以包括第一和第二本地振荡器（LO）发生器，以分别基于不同的分频比产生用于第一和第二接收器的LO信号，以便减轻压控振荡器（VCO）拉动。

公开(公告)号：WO2014159083A1

公开(公告)日：2014-10-02

申请号：PCT/US2014/021891

申请日：2014-03-07

Applicant: QUALCOMM INCORPORATED

Inventor： LIU, Li ,  SAMPATH, Praveen-Kumar ,  LEUNG, Lai Kan ,  NARATHONG, Chiewcharn ,  LAU, Soon-Seng ,  HUMNABADKAR, Ketan ,  CHALLA, Raghu Narayan ,  GODBOLE, Devavrata Vasant

IPC: H03B21/01 ,  H04B17/00 ,  H04L7/00

CPC classification number: H04L7/0331 ,  H03B21/01 ,  H03D3/009 ,  H04W52/02 ,  H04W52/0209 ,  Y02D70/1222 ,  Y02D70/1262 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/164

Abstract: Techniques for detecting and correcting phase discontinuity of a local oscillator (LO) signal are disclosed. A wireless device may include an LO generator and a phase detector. The LO generator generates an LO signal used for frequency conversion and is periodically powered on and off. The phase detector detects the phase of the LO signal when the LO generator is powered on. The detected phase of the LO signal is used to identify phase discontinuity of the LO signal. The wireless device may include (i) a single-tone generator that generates a single-tone signal used to detect the phase of the LO signal, (ii) a downconverter that downconverts the single-tone signal with the LO signal and provides a downconverted signal used by the phase detector to detect the phase of LO signal, and (iii) phase corrector that corrects phase discontinuity of the LO signal in the analog domain or digital domain.

Abstract translation: 公开了用于检测和校正本地振荡器（LO）信号的相位不连续性的技术。 无线设备可以包括LO发生器和相位检测器。 LO发生器产生用于频率转换的LO信号，并且周期性地通电和关断。 当LO发生器通电时，相位检测器检测LO信号的相位。 LO信号的检测相位用于识别LO信号的相位不连续性。 无线设备可以包括（i）生成用于检测LO信号的相位的单音信号的单音发生器，（ii）下变频器，其使用LO信号对单音信号进行下变频并提供下变频 信号由相位检测器使用以检测LO信号的相位，以及（iii）相位校正器，用于校正模拟域或数字域中的LO信号的相位不连续性。

公开(公告)号：WO2012048036A2

公开(公告)日：2012-04-12

申请号：PCT/US2011/054974

申请日：2011-10-05

Applicant: QUALCOMM INCORPORATED ,  LIU, Li ,  NARATHONG, Chiewcharn ,  GUDEM, Prasad Srinivasa Siva

Inventor： LIU, Li ,  NARATHONG, Chiewcharn ,  GUDEM, Prasad Srinivasa Siva

IPC: H03D3/24 ,  H03L7/093 ,  H04B1/40 ,  H04B1/00 ,  H04W88/06

CPC classification number: H03L7/1976 ,  H03B5/1212 ,  H03B5/1228 ,  H03B5/1243 ,  H03L7/093 ,  H03L7/099 ,  H03L7/104 ,  H04B1/0057

Abstract: A transceiver for multi-standard operation (usable, for example, to communicate signals both of a first wireless communication standard and of a second wireless communication standard) has a mixer that receives a local oscillator signal generated by a local oscillator. A PLL of the local oscillator involves a VCO, a digitally programmable analog loop filter, a digitally programmable VCO supply voltage circuit, and a digitally programmable VCO varactor bias control circuit. In one aspect, the bandwidth of the analog loop filter is adjusted depending on the communication standard of the signal being communicated. In other aspects, the VCO supply voltage circuit and/or the varactor bias control circuit are configured in different ways to optimize PLL performance depending on the communication standard of the signal being communicated.

Abstract translation: 用于多标准操作的收发器（可用于例如传送第一无线通信标准和第二无线通信标准两者的信号）具有混频器，该混频器接收由 本地振荡器。 本地振荡器的PLL涉及VCO，数字可编程模拟环路滤波器，数字可编程VCO电源电压电路和数字可编程VCO变容二极管偏置控制电路。 在一个方面中，模拟环路滤波器的带宽根据所传送信号的通信标准进行调整。 在其他方面，VCO电源电压电路和/或变容二极管偏置控制电路以不同方式配置，以根据所传送信号的通信标准来优化PLL性能。

公开(公告)号：WO2011153076A2

公开(公告)日：2011-12-08

申请号：PCT/US2011/038241

申请日：2011-05-26

Applicant: QUALCOMM INCORPORATED ,  GUDEM, Prasad S. ,  LAU, Soon-Seng ,  LIU, Li

Inventor： GUDEM, Prasad S. ,  LAU, Soon-Seng ,  LIU, Li

IPC: H04B1/10 ,  H04B1/16 ,  H04B1/52

CPC classification number: H04B1/525 ,  H04B1/109 ,  H04W52/0238 ,  Y02D70/1242 ,  Y02D70/164 ,  Y02D70/40

Abstract: Although the duplexer in a full-duplex transceiver circuit may only be guaranteed by the duplexer manufacturer to have a transmit band rejection from its TX port to its RX port of a certain amount, and may only be guaranteed to have a receive band rejection of another amount, the actual transmit band rejection and the actual receive band rejection of a particular instance of the duplexer may be better than specified. Rather than consuming excess power in the receiver and/or transmitter in order to meet performance requirements assuming the duplexer only performs as well as specified, the duplexer's in-circuit performance is measured as part of a transmitter-to-receiver isolation determination. Transmitter and/or receiver power settings are reduced where possible to take advantage of the measured better-than-specified in-circuit duplexer performance, while still meeting transceiver performance requirements. Power settings are not changed during normal transmit and receive mode operation.

Abstract translation: 虽然全双工收发器电路中的双工器可能只能由双工器制造商保证从其TX端口到其一定数量的RX端口的发射波段抑制，并且只能保证具有另一个的接收频带抑制 数量，双工器的特定实例的实际发射频带抑制和实际接收频带抑制可能优于指定的。 假设双工器仅执行指定，而不是在接收机和/或发射机中消耗多余的功率，以满足性能要求，则双工器的在线性能是作为发射机到接收机隔离确定的一部分进行测量的。 发射机和/或接收机功率设置在可能的情况下可以减少，以便在仍然满足收发器性能要求的同时利用测得的优于指定的在线双工器性能。 在正常的发送和接收模式操作期间，电源设置不会改变。

公开(公告)号：WO2010068503A1

公开(公告)日：2010-06-17

申请号：PCT/US2009/065961

申请日：2009-11-25

Applicant: QUALCOMM Incorporated ,  PANIKKATH, Vinod, V. ,  LIU, Li

Inventor： PANIKKATH, Vinod, V. ,  LIU, Li

IPC: H03L7/08

CPC classification number: H03K5/1565 ,  H03K3/017 ,  H03L7/08

Abstract: A local oscillator (LO) module comprises a local oscillator and a feedback circuit. The local oscillator, biased at a supply voltage, generates a local oscillator signal having a duty cycle. The feedback circuit makes an absolute adjustment of the duty cycle of the local oscillator signal in response to a difference between a first voltage signal, representing a voltage level of the local oscillator signal, and a second voltage signal, representing a voltage level of a portion of the supply voltage corresponding to a desired duty cycle for the local oscillator signal.

Abstract translation: 本地振荡器（LO）模块包括本地振荡器和反馈电路。 以电源电压偏置的本地振荡器产生具有占空比的本地振荡器信号。 响应于表示本地振荡器信号的电压电平的第一电压信号和表示本地振荡器信号的电压电平的第二电压信号之间的差异，反馈电路对本地振荡器信号的占空比进行绝对调整， 的电源电压对应于本地振荡器信号的期望占空比。

公开(公告)号：WO2010062702A2

公开(公告)日：2010-06-03

申请号：PCT/US2009/062867

申请日：2009-10-30

Applicant: QUALCOMM Incorporated ,  KHATRI, Himanshu ,  LIU, Li

Inventor： KHATRI, Himanshu ,  LIU, Li

IPC: H03D7/14

CPC classification number: H03D7/1441 ,  H03D7/1433 ,  H03D7/1466 ,  H03D2200/0043

Abstract: Techniques for designing a single-balanced mixer coupled to a dummy portion with a dummy load to improve noise rejection. In an aspect, a single-ended signal (RF) from a stage preceding the mixer, e.g., a low-noise amplifier (LNA), is coupled to the input of the single-balanced mixer to be mixed with a local oscillator (LO) signal. A dummy portion replicating the topology of the single-balanced mixer is coupled to the single-balanced mixer to improve noise rejection, with the LO signal also provided to the dummy portion. The input of the dummy portion may be coupled, e.g., to a dummy load, which is designed to replicate the loading characteristics of the preceding stage, e.g., the LNA.

Abstract translation: 用于设计耦合到具有虚拟负载的虚拟部分以改善噪声抑制的单平衡混频器的技术 在一个方面，来自混频器之前的级（例如低噪声放大器（LNA））的单端信号（RF）耦合到单平衡混频器的输入端以与本地振荡器（LO ）信号。 复制单平衡混频器的拓扑结构的虚拟部分耦合到单平衡混频器以改善噪声抑制，LO信号也提供给虚拟部分。 虚设部分的输入可以例如耦合到虚设负载，虚设负载被设计为复制前级的负载特性，例如LNA。