公开(公告)号：US20140218124A1

公开(公告)日：2014-08-07

申请号：US13757666

申请日：2013-02-01

Applicant: QUALCOMM INCORPORATED

Inventor： Yiwu Tang ,  Jianyun Hu ,  Chiewcharn Narathong

IPC: H03L7/16

CPC classification number: H03L7/16 ,  H03B5/1215 ,  H03B5/1243 ,  H03B5/1256 ,  H03B5/1296 ,  H03B2201/0208 ,  H03B2201/0216 ,  H03C3/0925 ,  H03C3/0941 ,  H03C3/0958 ,  H03L7/00 ,  H03L7/07 ,  H03L7/101 ,  H03L7/104 ,  H03L7/187

Abstract: An apparatus for generating an oscillating output signal includes an inductive-capacitive (LC) circuit and a current tuning circuit. The LC circuit includes a primary inductor and a varactor coupled to the primary inductor. A capacitance of the varactor is responsive to a voltage at a control input of the varactor. The current tuning circuit includes a secondary inductor and a current driving circuit coupled to the secondary inductor. The current driving circuit is responsive to a current at a control input of the current driving circuit. An effective inductance of the primary inductor is adjustable via magnetic coupling to the secondary inductor, and a frequency of the oscillating output signal is responsive to the effective inductance of the primary inductor and to the capacitance of the varactor.

Abstract translation: 用于产生振荡输出信号的装置包括电感 - 电容（LC）电路和电流调谐电路。 LC电路包括耦合到初级电感器的初级电感器和变容二极管。 变容二极管的电容响应于变容二极管的控制输入端的电压。 当前调谐电路包括二次电感器和耦合到次级电感器的电流驱动电路。 电流驱动电路响应于电流驱动电路的控制输入处的电流。 初级电感器的有效电感可通过与次级电感器的磁耦合进行调节，振荡输出信号的频率响应于初级电感器的有效电感和变容二极管的电容。

公开(公告)号：US08787864B2

公开(公告)日：2014-07-22

申请号：US13691058

申请日：2012-11-30

Applicant: QUALCOMM Incorporated

Inventor： Lai Kan Leung ,  Gary John Ballantyne ,  Chiewcharn Narathong

IPC: H04B1/26

CPC classification number: H04B1/16 ,  H03D7/1441 ,  H03D7/1458 ,  H03D7/1466 ,  H03D7/1491 ,  H03D7/165 ,  H03D7/18 ,  H03D2200/0041 ,  H03D2200/0045 ,  H03D2200/0088

Abstract: Techniques for performing analog calibration of a receiver to optimize a second-order input intercept point (IIP2). In an aspect, a signal generator modeling an interferer is coupled to an adjustable input of a receiver, e.g., a gate bias voltage of a mixer. For example, the signal generator output may be a single-tone on-off keying (OOK) modulated signal. The mixer mixes the signal down to baseband, wherein an analog correlator correlates the down-converted signal with the known sequence of bits used to perform the OOK modulation. The analog correlation output is then provided to drive the bias voltage in the mixer, e.g., one or more gate voltages of transistors in the differential mixer, to optimize the overall receiver IIP2. Further aspects of the disclosure provide for calibrating receivers having multiple LNA's, and also dual or diversity receivers having multiple receive paths.

Abstract translation: 用于执行接收机的模拟校准以优化二阶输入截距点（IIP2）的技术。 在一方面，对干扰源建模的信号发生器耦合到接收机的可调节输入端，例如混频器的栅极偏置电压。 例如，信号发生器输出可以是单音开关键控（OOK）调制信号。 混频器将信号降低到基带，其中模拟相关器将下变频信号与用于执行OOK调制的已知位的位串相关。 然后提供模拟相关输出以驱动混频器中的偏置电压，例如差分混频器中的晶体管的一个或多个栅极电压，以优化整个接收器IIP2。 本公开的另外方面提供了用于校准具有多个LNA的接收机，以及具有多个接收路径的双重或分集接收机。

公开(公告)号：US12244271B2

公开(公告)日：2025-03-04

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: H03F3/68 ,  H03F1/56 ,  H03F3/19 ,  H03F3/21

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：US20240030952A1

公开(公告)日：2024-01-25

申请号：US18481894

申请日：2023-10-05

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

CPC classification number: H04B1/1638

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：US11658764B2

公开(公告)日：2023-05-23

申请号：US17124368

申请日：2020-12-16

Applicant: QUALCOMM Incorporated

Inventor： Lai Kan Leung ,  Aleksandar Miodrag Tasic ,  Francesco Gatta ,  Chiewcharn Narathong ,  Kyle David Holland

IPC: H04K3/00 ,  H03F3/19 ,  H03M1/12

CPC classification number: H04K3/22 ,  H03F3/19 ,  H03M1/12 ,  H03F2200/294 ,  H03F2200/451

Abstract: The disclosure relates to an apparatus including a receiver configured to process a radio frequency (RF) signal to generate a baseband signal; a radio frequency (RF) jammer detector configured to generate a signal indicative of whether an RF jammer is present at an input of the receiver; and a receiver bias circuit configured to generate a supply voltage for the receiver based on the RF jammer indication signal. In another aspect, the apparatus includes constant gain bias circuit to maintain the gain of the receiver constant in response to changes in the supply voltage. In other aspects, the receiver bias circuit may suspend the generating of the supply voltage based on the RF jammer indication signal if the power level of the target received signal is above a threshold. In other aspects, the receiver bias circuit changes the supply voltage during cyclic prefix (CP) intervals between downlink intervals.

公开(公告)号：US10439858B2

公开(公告)日：2019-10-08

申请号：US15715006

申请日：2017-09-25

Applicant: QUALCOMM Incorporated

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

IPC: H04L27/26 ,  H04L12/761 ,  H04L12/709 ,  H03F1/22 ,  H04B1/00 ,  H03F3/193 ,  H03F3/24 ,  H04L5/00

Abstract: An apparatus includes a low noise amplifier (LNA) multiplexer configured to receive a plurality of radio frequency (RF) signals at a plurality of input terminals and to combine the plurality of RF signals into a combined RF signal that is output at an output terminal. The LNA multiplexer includes a plurality of input signal paths, and each input signal path is coupleable to a respective input terminal of the plurality of input terminals and is configured to receive a respective RF signal of the plurality of RF signals. The apparatus further includes an LNA demultiplexer configured to receive the combined RF signal at an input port coupled to the output terminal and to distribute the combined RF signal to a plurality of output ports, each output port of the plurality of output ports configured to output the combined RF signal to a respective downconverter of a plurality of downconverters.

公开(公告)号：US10177722B2

公开(公告)日：2019-01-08

申请号：US15178529

申请日：2016-06-09

Applicant: QUALCOMM Incorporated

Inventor： Chuan Wang ,  Kevin Hsi Huai Wang ,  Chiewcharn Narathong ,  Mehmet Uzunkol ,  Prakash Thoppay Egambaram

IPC: H03H7/38 ,  H03F3/195 ,  H03F1/56 ,  H04B1/401 ,  H04W88/02

Abstract: A device includes a low-noise amplifier (LNA) and a matching circuit. The matching circuit is coupled to an output of the LNA and switchably coupled to at least one of a first and a second output of the device. The device may further include a power splitter switchably coupled between an output of the matching circuit and the first and/or the second output of the device.

公开(公告)号：US09712226B2

公开(公告)日：2017-07-18

申请号：US14677056

申请日：2015-04-02

Applicant: QUALCOMM Incorporated

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

IPC: H04B1/16 ,  H04B7/08 ,  H04L27/152 ,  H04B1/00

CPC classification number: H04B7/0897 ,  H04B1/0082 ,  H04B1/16 ,  H04L27/152

Abstract: Certain aspects of the present disclosure provide multi-way diversity receivers with multiple synthesizers. Such a multi-way diversity receiver may be implemented in a carrier aggregation (CA) transceiver. One example wireless reception diversity circuit generally includes three or more receive paths for processing received signals and two or more frequency synthesizing circuits configured to generate local oscillating signals to downconvert the received signals. Each of the frequency synthesizing circuits is shared by at most two of the receive paths, and each pair of the frequency synthesizing circuits may generate a pair of local oscillating signals having the same frequency.

公开(公告)号：US09681447B2

公开(公告)日：2017-06-13

申请号：US14636591

申请日：2015-03-03

Applicant: QUALCOMM Incorporated

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

IPC: H04L1/00 ,  H04W72/04 ,  H04L5/00 ,  H04B1/16 ,  H04L27/26 ,  H04B1/38

CPC classification number: H04W72/0453 ,  H04B1/16 ,  H04B1/30 ,  H04B1/38 ,  H04L5/001 ,  H04L5/003 ,  H04L27/2647

Abstract: Certain aspects of the present disclosure provide methods and apparatus for dynamically adjusting a voltage-controlled oscillator (VCO) frequency, a local oscillator (LO) divider ratio, and/or a receive path when adding or discontinuing reception of a component carrier (CC) in a carrier aggregation (CA) scheme. This dynamic adjustment is utilized to avoid (or at least reduce) VCO, LO, and transmit signal coupling issues with multiple component carriers, with minimal (or at least reduced) current consumption by the VCO and the LO divider.

公开(公告)号：US09515749B2

公开(公告)日：2016-12-06

申请号：US14706917

申请日：2015-05-07

Applicant: QUALCOMM Incorporated

Inventor： Lai Kan Leung ,  Kevin Hsi Huai Wang ,  Dongling Pan ,  Chiewcharn Narathong

IPC: H04B1/16 ,  H04B17/21 ,  H04W24/02 ,  H03F1/02 ,  H03F3/19 ,  H03F3/21

CPC classification number: H04B17/21 ,  H03F1/0205 ,  H03F1/0277 ,  H03F3/189 ,  H03F3/19 ,  H03F3/211 ,  H03F3/24 ,  H03F3/62 ,  H03F3/68 ,  H03F3/72 ,  H03F2200/111 ,  H03F2200/294 ,  H03F2200/451 ,  H03F2203/21106 ,  H03F2203/21142 ,  H03F2203/21145 ,  H04W24/02

Abstract: An amplifier module with an output coupler is disclosed. The amplifier module may include a plurality of input terminals and two or more output terminals. Each input terminal may be coupled to an input of an independent amplifier. Outputs from the independent amplifiers may be coupled to the two or more output terminals. The amplifier module may include an output coupler to couple the two or more output terminals together. A signal may be received by a first output terminal and be coupled by the output coupler to a second output terminal. In some embodiments, when the two or more output terminals are coupled together, the independent amplifiers may be made inactive or operated in a minimum gain configuration.

Abstract translation: 公开了具有输出耦合器的放大器模块。 放大器模块可以包括多个输入端子和两个或更多个输出端子。 每个输入端可以耦合到独立放大器的输入。 来自独立放大器的输出可以耦合到两个或更多个输出端子。 放大器模块可以包括输出耦合器以将两个或多个输出端子耦合在一起。 信号可以由第一输出端子接收并且由输出耦合器耦合到第二输出端子。 在一些实施例中，当两个或更多个输出端子耦合在一起时，独立放大器可以被制成无效或以最小增益配置运行。