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    SYSTEMS AND METHODS FOR DETECTING LOCAL OSCILLATOR LEAKAGE AND IMAGE TONE IN I/Q MIXER BASED TRANSCEIVERS
    3.
    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.

    Redundancy scheme for flash assisted successive approximation register (SAR) analog-to-digital converter (ADC)
    6.
    发明授权
    Redundancy scheme for flash assisted successive approximation register (SAR) analog-to-digital converter (ADC) 有权
    闪光辅助逐次逼近寄存器（SAR）模数转换器（ADC）的冗余方案

    公开(公告)号：US09425814B1

    公开(公告)日：2016-08-23

    申请号：US15052452

    申请日：2016-02-24

    Applicant: Samsung Electronics Co., Ltd.

    Inventor： Ashutosh Verma

    IPC: H03M1/00 ,  H03M1/46 ,  H03M7/16 ,  H03M1/80 ,  H03M1/06 ,  H03M1/12

    CPC classification number: H03M7/165 ,  H03M1/00 ,  H03M1/0641 ,  H03M1/0695 ,  H03M1/12 ,  H03M1/145 ,  H03M1/365 ,  H03M1/462 ,  H03M1/468 ,  H03M1/804

    Abstract: Apparatuses, systems, and methods for Analog-to-Digital Converters (ADCs) are described. In one aspect, an ADC is described which uses a Flash-assisted ADC and a Successive Approximation Register (SAR) to provide digital approximations of an input analog voltage to a Capacitor Digital-to-Analog Converter (DAC), which generates a voltage from the digital approximations. The two voltages are compared and the comparison value used as the input for the SAR. After successive approximations, a digital combiner generates the digital conversion value from the outputs of the Flash-assisted ADC and the SAR. In one aspect, the bit cycles required for conversion are reduced by using redundancy and recombination.

    Abstract translation: 描述了模数转换器（ADC）的装置，系统和方法。 在一个方面，描述了使用闪光辅助ADC和逐次近似寄存器（SAR）来向电容器数模转换器（DAC）提供输入模拟电压的数字近似的ADC，其产生来自 数字近似。 比较两个电压，将比较值用作SAR的输入。 在逐次逼近之后，数字组合器从闪存辅助ADC和SAR的输出产生数字转换值。 在一个方面，通过使用冗余和复合来减少转换所需的位周期。

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