公开(公告)号：US20140098906A1

公开(公告)日：2014-04-10

申请号：US13646876

申请日：2012-10-08

Applicant: QUALCOMM INCORPORATED

Inventor： Prasad Srinivasa Siva Gudem ,  Vijay K Chellappa ,  Jeremy Darren Dunworth ,  Chiewcharn Narathong

IPC: H04L25/49

CPC classification number: H04B1/0483 ,  H04B1/005 ,  H04B1/406 ,  H04B7/02 ,  H04W52/0209 ,  Y02D70/1242 ,  Y02D70/1262 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/146 ,  Y02D70/164 ,  Y02D70/166 ,  Y02D70/40

Abstract: A method and apparatus for providing total power from one transmit path. The method provides the steps of: selecting a transmit path and closing a first switch, located after a digital to analog converter. A second switch between the two transmit paths is then closed in order to provide for the use of at least one low-pass filter in each transmit path. The signal is then processed through the at least one low pass filter in each transmit path. The signal is then processed through at least one mixer in each transmit path. After the mixer, the signal is then processed through at least one driver amplifier in each transmit path, and one-half of the total power is allocated to each of two transmission paths. A third switch is then closed after the at least one power amplifier in each transmit path to force the half-power from one transmit path into one output.

Abstract translation: 一种用于从一个发送路径提供总功率的方法和装置。 该方法提供了以下步骤：选择发送路径并关闭位于数模转换器之后的第一开关。 然后关闭两个发送路径之间的第二个开关，以便在每个发送路径中提供使用至少一个低通滤波器。 然后通过每个发射路径中的至少一个低通滤波器处理该信号。 然后通过每个发送路径中的至少一个混频器处理信号。 在混频器之后，然后通过每个发送路径中的至少一个驱动器放大器处理信号，并且将总功率的一半分配给两个传输路径中的每一个。 然后在每个发射路径中的至少一个功率放大器之后关闭第三开关，以将来自一个发射路径的半功率强制为一个输出。

公开(公告)号：US20130241754A1

公开(公告)日：2013-09-19

申请号：US13893099

申请日：2013-05-13

Applicant: QUALCOMM INCORPORATED

Inventor： Chiewcharn Narathong ,  Jong Min Park ,  Tsai-Pi Hung

IPC: H03M1/66 ,  H03G11/00

CPC classification number: H03M1/66 ,  H03B5/1215 ,  H03B5/1228 ,  H03B5/1243 ,  H03B5/1265 ,  H03G11/008 ,  H03L7/093 ,  H03L7/099 ,  H03L2207/06 ,  H03M1/664 ,  H03M1/765

Abstract: A circuit includes a digital-to-analog converter with non-uniform resolution for converting a digital signal into an analog signal. The digital-to-analog converter includes high-resolution circuitry, reduced-resolution circuitry coupled to the high-resolution circuitry and a switch coupled to the high-resolution circuitry and to the reduced-resolution circuitry. The switch couples one of the high-resolution circuitry and the reduced-resolution circuitry to an output node. The circuit also includes a decoder coupled to the switch. The decoder receives the digital signal to control the switch.

Abstract translation: 电路包括具有用于将数字信号转换为模拟信号的非均匀分辨率的数模转换器。 数模转换器包括高分辨率电路，耦合到高分辨率电路的低分辨率电路和耦合到高分辨率电路和降低分辨率电路的开关。 该开关将高分辨率电路和降低分辨率电路之一耦合到输出节点。 电路还包括耦合到开关的解码器。 解码器接收数字信号以控制开关。

公开(公告)号：US20230099161A1

公开(公告)日：2023-03-30

申请号：US17448870

申请日：2021-09-24

Applicant: QUALCOMM Incorporated

Inventor： Kyle David Holland ,  Jang Joon Lee ,  Rahul Kodkani ,  Aleksandar Miodrag Tasic ,  Chih-Fan Liao ,  Lai Kan Leung ,  Chiewcharn Narathong

IPC: H03F3/19 ,  H03F1/56

Abstract: An amplifier may include multiple stages, with the multiple stages arranged in a fan-out configuration. The fan-out configuration provides multiple amplified signals at multiple amplifier output nodes, which may be coupled to a shared set of downconverters. The shared downconverters may support processing of only a smaller bandwidth than the largest possible bandwidth of an input RF signal input to the amplifier. For example, the downconverters may support a bandwidth matching a smallest bandwidth of a supported RF signal. For example, when the amplifier is intended to support 5G mmWave RF signals and 5G sub-6 GHz RF signals, the downconverters may each individually support a bandwidth of carriers in the 5G sub-6 GHz RF signals but not individually support the entire bandwidth of a possible 5G mmWave RF signal.

公开(公告)号：US20230089220A1

公开(公告)日：2023-03-23

申请号：US17448499

申请日：2021-09-22

Applicant: QUALCOMM Incorporated

Inventor： Jang Joon Lee ,  Kyle David Holland ,  Jian Kang ,  Aleksandar Miodrag Tasic ,  Chih-Fan Liao ,  Yingying Li ,  Lai Kan Leung ,  Chiewcharn Narathong

IPC: H04B1/16

Abstract: Embodiments of this disclosure may include a receiver with a reconfigurable processing path for different signal conditions. Such a receiver may reconfigure between a mixer-first configuration and an amplifier-first configuration. In the mixer-first configuration, an RF input signal is not passed through an LNA for amplification before processing the RF input signal for downconversion to baseband and eventual extraction of the information in the signal. In the amplifier-first configuration, an RF input signal is passed through an LNA for amplification before processing the RF input signal for downconversion to baseband and eventual extraction of the information in the signal. Reconfiguring the receiver between mixer-first and amplifier-first configurations may be performed based on detection of jammer signals and/or measurement of signal-to-noise ratio (SNR).

公开(公告)号：US10033343B2

公开(公告)日：2018-07-24

申请号：US14231103

申请日：2014-03-31

Applicant: QUALCOMM Incorporated

Inventor： Aleksandar Miodrag Tasic ,  Chiewcharn Narathong ,  Gurkanwal Singh Sahota ,  Shrenik Patel

IPC: H03G3/30 ,  H04B1/00 ,  H04B1/10

Abstract: A device includes a reconfigurable receiver front end having variable gain and variable bandwidth configured to tune to a plurality of communication channels in a communication band, the reconfigurable receiver front end responsive to a signal power level.

公开(公告)号：US09603187B2

公开(公告)日：2017-03-21

申请号：US13677017

申请日：2012-11-14

Applicant: QUALCOMM Incorporated

Inventor： Aleksandar Miodrag Tasic ,  Anosh Bomi Davierwalla ,  Chiewcharn Narathong ,  Klaas van Zalinge

IPC: H04W88/02 ,  H03F3/193 ,  H03F3/68 ,  H04B1/00

CPC classification number: H04W88/02 ,  H03F3/193 ,  H03F3/68 ,  H04B1/0053

Abstract: Omni-band amplifiers support multiple band groups. In an exemplary design, an apparatus (e.g., a wireless device, an integrated circuit, etc.) includes at least one gain transistor and a plurality of cascode transistors for a plurality of band groups. Each band group covers a plurality of bands. The gain transistor(s) receive an input radio frequency (RF) signal. The cascode transistors are coupled to the gain transistor(s) and provide an output RF signal for one of the plurality of band groups. In an exemplary design, the gain transistor(s) include a plurality of gain transistors for the plurality of band groups. One gain transistor and one cascode transistor are enabled to amplify the input RF signal and provide the output RF signal for the selected band group. The gain transistors may be coupled to different taps of a single source degeneration inductor or to different source degeneration inductors.

公开(公告)号：US09344270B2

公开(公告)日：2016-05-17

申请号：US13829232

申请日：2013-03-14

Applicant: QUALCOMM Incorporated

Inventor： Li Liu ,  Praveen-Kumar Sampath ,  Lai Kan Leung ,  Chiewcharn Narathong ,  Soon-Seng Lau ,  Ketan Humnabadkar ,  Raghu Narayan Challa ,  Devavrata Vasant Godbole

IPC: H03D3/24 ,  H04L27/20 ,  H04L7/033 ,  H03B21/01 ,  H04W52/02

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. In one design, a wireless device includes 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 further 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。 在一种设计中，无线设备包括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。 无线设备还可以包括（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 相位检测器用于检测LO信号的相位的下变频信号，以及（iii）校正模拟域或数字域中的LO信号的相位不连续性的相位校正器。

公开(公告)号：US20150333941A1

公开(公告)日：2015-11-19

申请号：US14671939

申请日：2015-03-27

Applicant: QUALCOMM Incorporated

Inventor： Dongling Pan ,  Aleksandar Miodrag Tasic ,  Rajagopalan Rangarajan ,  Lai Kan Leung ,  Chiewcharn Narathong ,  Yiwu Tang

IPC: H04L27/06 ,  H04B7/26 ,  H04B1/10

CPC classification number: H04L27/063 ,  H04B1/005 ,  H04B1/10 ,  H04B7/26

Abstract: A radio frequency (RF) front end having multiple low noise amplifiers modules is disclosed. In an exemplary embodiment, an apparatus includes at least one first stage amplifier configured to amplify received carrier signals to generate at least one first stage carrier group. Each first stage carrier group includes a respective portion of the carrier signals. The apparatus also includes second stage amplifiers configured to amplify the first stage carrier groups. Each second stage amplifier configured to amplify a respective first stage carrier group to generate two second stage output signals that may be output to different demodulation stages where each demodulation stage demodulates a selected carrier signal.

Abstract translation: 公开了具有多个低噪声放大器模块的射频（RF）前端。 在示例性实施例中，装置包括至少一个第一级放大器，其配置成放大接收的载波信号以产生至少一个第一级载波组。 每个第一级载波组包括载波信号的相应部分。 该装置还包括配置成放大第一级载波组的第二级放大器。 每个第二级放大器被配置为放大相应的第一级载波组以产生两个第二级输出信号，其可以被输出到不同的解调级，其中每个解调级解调所选择的载波信号。

公开(公告)号：US09048928B2

公开(公告)日：2015-06-02

申请号：US13675917

申请日：2012-11-13

Applicant: QUALCOMM Incorporated

Inventor： Aleksandar Miodrag Tasic ,  Chiewcharn Narathong

IPC: H04B1/38 ,  H04B1/16 ,  H04B1/18 ,  H04B1/40

CPC classification number: H04B1/40 ,  H04B1/18

Abstract: Expandable transceivers and receivers support operation on multiple frequency bands and multiple carriers. In an exemplary design, an apparatus (e.g., a wireless device, an integrated circuit (IC) chip, or circuit module) includes a low noise amplifier (LNA) and interface circuit. The LNA resides on an IC chip and includes a first/on-chip output and a second/off-chip output. The interface circuit also resides on the IC chip, is coupled to the second output of the LNA, and provides an amplified RF signal outside of the IC chip. The apparatus may further include a buffer, load circuit, and downconverter circuit. The buffer resides on the IC chip, is coupled to the first output of the LNA, and receives a second amplified RF signal from outside of the IC chip. The load circuit is coupled to the first output of the LNA. The downconverter circuit is coupled to the load circuit.

Abstract translation: 可扩展收发器和接收器支持在多个频带和多个载波上进行操作。 在示例性设计中，装置（例如，无线装置，集成电路（IC）芯片或电路模块）包括低噪声放大器（LNA）和接口电路。 LNA驻留在IC芯片上，包括第一/片上输出和第二/片外输出。 接口电路也位于IC芯片上，耦合到LNA的第二输出端，并在IC芯片外部提供放大的RF信号。 该装置还可以包括缓冲器，负载电路和下变频器电路。 缓冲器位于IC芯片上，耦合到LNA的第一输出端，​​并从IC芯片的外部接收第二放大的RF信号。 负载电路耦合到LNA的第一输出端。 下变频器电路耦合到负载电路。

公开(公告)号：US20140295783A1

公开(公告)日：2014-10-02

申请号：US14303552

申请日：2014-06-12

Applicant: QUALCOMM Incorporated

Inventor： Kan Lai Leung ,  Chiewcharn Narathong ,  Jianyun Hu ,  Yunfei Feng

IPC: H04B17/00

CPC classification number: H04B17/21 ,  H03F3/193 ,  H03F3/72 ,  H03F2200/294 ,  H03F2200/451 ,  H04B1/1638 ,  H04B1/30 ,  H04B17/29

Abstract: Receiver circuits that can be reconfigured to generate test signals in a wireless device are disclosed. In an exemplary design, an apparatus includes a mixer and an amplifier. The mixer downconverts an input radio frequency (RF) signal based on a local oscillator (LO) signal in a first mode. The amplifier, which is formed by at least a portion of the mixer, amplifies the LO signal and provides an amplified LO signal in a second mode. In another exemplary design, an apparatus includes an amplifier and an attenuator. The amplifier receives and amplifies an input RF signal in a first mode. The attenuator, which is formed by at least a portion of the amplifier, receives and passes an LO signal in a second mode.