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    METHOD AND APPARATUS FOR SECOND ORDER INTERCEPT POINT (IP2) CALIBRATION
    3.
    发明申请
    METHOD AND APPARATUS FOR SECOND ORDER INTERCEPT POINT (IP2) CALIBRATION 审中-公开

    公开(公告)号：US20190285755A1

    公开(公告)日：2019-09-19

    申请号：US16429742

    申请日：2019-06-03

    Applicant: Samsung Electronics Co., Ltd.

    Inventor： Daniel BABITCH ,  Andrea Y. Chen ,  Chung Lau ,  Bhaskar Nallapureddy

    IPC: G01S19/23 ,  G01S19/21

    Abstract: An electronic device, a method, and a chipset for receiving global navigation satellite system (GNSS) signals are provided. The electronic device includes a processor configured to: downconvert, by an input/output (I/O) mixer including a first multiplier and a second multiplier, a modulated radio frequency wave to an intermediate frequency, where the modulated radio frequency wave is input to first inputs of the first multiplier and the second multiplier, and where an in-phase signal and a quadrature phase signal based on a square wave are input to second inputs of the first multiplier and the second multiplier, respectively; filter the downconverted modulated radio frequency wave; and convert the filtered downconverted modulated radio frequency wave to a digital signal.

    Method and apparatus for second order intercept point (IP2) calibration
    4.
    发明授权
    Method and apparatus for second order intercept point (IP2) calibration 有权

    公开(公告)号：US11067702B2

    公开(公告)日：2021-07-20

    申请号：US17018370

    申请日：2020-09-11

    Applicant: Samsung Electronics Co., Ltd.

    Inventor： Daniel Babitch ,  Andrea Y. Chen ,  Chung Lau ,  Bhaskar Nallapureddy

    IPC: G01S19/23 ,  G01S19/21

    Abstract: An electronic device, a method, and a chipset for receiving global navigation satellite system (GNSS) signals are provided. An input/output (I/O) mixer including a first multiplier and a second multiplier downconverts a modulated radio frequency wave to an intermediate frequency. The modulated radio frequency wave is input to first inputs of the first multiplier and the second multiplier, and where an in-phase signal, from a first digital to analog converter (DAC), and a quadrature phase signal, from a second DAC, are input to second inputs of the first multiplier and the second multiplier, respectively. A mixer imbalance between the first mixer and the second mixer is reduced using direct current (DC) bias voltages from the first DAC and the second DAC. The DC bias voltages are determined based on a first and second DAC codes of the first and second DACs. The downconverted modulated radio frequency wave is filtered.

    SYSTEMS AND METHODS FOR DETECTING LOCAL OSCILLATOR LEAKAGE AND IMAGE TONE IN I/Q MIXER BASED TRANSCEIVERS
    6.
    发明申请
    SYSTEMS AND METHODS FOR DETECTING LOCAL OSCILLATOR LEAKAGE AND IMAGE TONE IN I/Q MIXER BASED TRANSCEIVERS 有权

    公开(公告)号：US20210175851A1

    公开(公告)日：2021-06-10

    申请号：US17142058

    申请日：2021-01-05

    Applicant: Samsung Electronics Co., Ltd.

    Inventor： Hariharan Nagarajan ,  Ashutosh Verma ,  Chung Lau ,  Tienyu Chang

    IPC: H03D7/14 ,  H04B1/403 ,  H04B17/10

    Abstract: A detector circuit includes: a squaring circuit configured to receive an output of a power amplifier of a radio transmitter and to produce an output current, the output of the power amplifier including: a desired tone; a local oscillator leakage tone; and an image tone, and the output current of the squaring circuit including: a direct current (DC) component including a function of the desired tone and an alternating current (AC) component; and a DC current absorber electrically connected to an output terminal of the squaring circuit, the DC current absorber being configured to filter out the DC component of the output current of the squaring circuit to produce a filtered output of the squaring circuit, the filtered output including the AC component including functions of the local oscillator leakage tone and the image tone.

    Method and apparatus for second order intercept point (IP2) calibration
    7.
    发明授权
    Method and apparatus for second order intercept point (IP2) calibration 有权

    公开(公告)号：US10775512B2

    公开(公告)日：2020-09-15

    申请号：US16429742

    申请日：2019-06-03

    Applicant: Samsung Electronics Co., Ltd.

    Inventor： Daniel Babitch ,  Andrea Y. Chen ,  Chung Lau ,  Bhaskar Nallapureddy

    IPC: G01S19/23 ,  G01S19/21

    Abstract: An electronic device, a method, and a chipset for receiving global navigation satellite system (GNSS) signals are provided. The electronic device includes a processor configured to: downconvert, by an input/output (I/O) mixer including a first multiplier and a second multiplier, a modulated radio frequency wave to an intermediate frequency, where the modulated radio frequency wave is input to first inputs of the first multiplier and the second multiplier, and where an in-phase signal and a quadrature phase signal based on a square wave are input to second inputs of the first multiplier and the second multiplier, respectively; filter the downconverted modulated radio frequency wave; and convert the filtered downconverted modulated radio frequency wave to a digital signal.

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