TRANSMITTER PERFORMANCE CALIBRATION SYSTEMS AND METHODS

    公开(公告)号:US20180091241A1

    公开(公告)日:2018-03-29

    申请号:US15276009

    申请日:2016-09-26

    Inventor: Franz Kuttner

    CPC classification number: H04B17/14 H04B1/525 H04B2001/0408 H04L27/152

    Abstract: An apparatus is disclosed that includes a transmit chain, a duplexer, a receive chain and a control circuit. The transmit chain is configured to generate a transmit signal at a transmit frequency. The duplexer is configured to pass the transmit signal to an antenna that generates a transmit leakage current into a received signal. The receive chain is configured to obtain the received signal and measure the leakage current from the transmit chain. The control circuit is configured to determine reduced performance parameters for the transmit chain based on the determined leakage signal, wherein the transmit leakage signal is inversely proportional to the reduced performance parameters.

    Transmitter performance calibration systems and methods

    公开(公告)号:US10122477B2

    公开(公告)日:2018-11-06

    申请号:US15276009

    申请日:2016-09-26

    Inventor: Franz Kuttner

    Abstract: An apparatus is disclosed that includes a transmit chain, a duplexer, a receive chain and a control circuit. The transmit chain is configured to generate a transmit signal at a transmit frequency. The duplexer is configured to pass the transmit signal to an antenna that generates a transmit leakage current into a received signal. The receive chain is configured to obtain the received signal and measure the leakage current from the transmit chain. The control circuit is configured to determine reduced performance parameters for the transmit chain based on the determined leakage signal, wherein the transmit leakage signal is inversely proportional to the reduced performance parameters.

    PAPR reduction for IQ RFDAC
    5.
    发明授权

    公开(公告)号:US09985811B2

    公开(公告)日:2018-05-29

    申请号:US15274721

    申请日:2016-09-23

    CPC classification number: H04L27/08 H04B1/0042 H04B1/04 H04L27/2614

    Abstract: Disclosed herein is an apparatus and methodology for reducing peak-to-average-power ratio (PAPR) for IQ radio frequency digital-to-analog converter (RFDAC). Processing circuitry may be configured to generate a digital signal comprising an in-phase (I) signal component and a quadrature (Q) signal component having a peak-to-average-power-ratio (PAPR). The processing circuitry may determine the I signal component and the Q signal component are higher than a predetermined threshold value, and limit the I signal component and the Q signal component to be less than or equal to the predetermined threshold value. The processing circuitry may rotate the signal components to generate rotated signal components to reduce the PAPR based on the I and Q signal components having less than or equal to the predetermined threshold value, and may generate an output radio frequency (RF) signal based on the rotated signal components.

    DIGITAL TO ANALOG CONVERTER CIRCUITS, APPARATUS AND METHOD FOR GENERATING A HIGH FREQUENCY TRANSMISSION SIGNAL AND METHODS OF DIGITAL TO ANALOG CONVERSION
    10.
    发明申请
    DIGITAL TO ANALOG CONVERTER CIRCUITS, APPARATUS AND METHOD FOR GENERATING A HIGH FREQUENCY TRANSMISSION SIGNAL AND METHODS OF DIGITAL TO ANALOG CONVERSION 有权
    数字到模拟转换器电路,用于产生高频传输信号的装置和方法以及数字到模拟转换的方法

    公开(公告)号:US20160094235A1

    公开(公告)日:2016-03-31

    申请号:US14835031

    申请日:2015-08-25

    CPC classification number: H03M1/662 H03M1/00 H03M1/12 H03M1/74 H03M1/747 H03M3/30

    Abstract: A digital to analog converter circuit includes a plurality of digital to analog converter cells. The digital to analog converter circuit further includes a control circuit configured to control an operation of a digital to analog converter cell of the plurality of digital to analog converter cells based on a first phase component of a digital signal comprising information to be transmitted during a first time interval and based on a second phase component of the digital signal comprising information to be transmitted during a second time interval.

    Abstract translation: 数模转换器电路包括多个数模转换器单元。 数模转换器电路还包括控制电路,其被配置为基于数字信号的第一相位分量来控制多个数模转换器单元中的数模转换器单元的操作,该数字信号包括将在第一 时间间隔,并且基于数字信号的第二相位分量,包括将在第二时间间隔期间发送的信息。

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