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公开(公告)号：US20130294295A1
公开(公告)日：2013-11-07
申请号：US13872093
申请日：2013-04-27
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Nagarajan Viswanathan , Visvesvaraya Pentakota , Robert Clair Keller , Thomas Neu , Francesco Dantoni
IPC: H04L5/14
CPC classification number: H04L5/1461 , H04B1/525
Abstract: Apparatus and methods disclosed herein implement an RF receive-band filter at a receive chain input of a wireless base station with a co-located transmitter and receiver. The RF receive-band filter includes an adaptive filter component to perform filtering operations on samples of a digital baseband or intermediate frequency signal x(n) from a transmit chain associated with the wireless base station. An adaptive filter transfer function is determined in real time such that samples of the baseband transmit signal x(n) are transformed into a cancellation baseband signal z(n). The digital cancelation baseband signal z(n) is then digital-to-analog converted and the resulting analog baseband signal z(t) is up-converted to obtain a subtractive RF cancelation signal c(t). C(t) is summed with a desirable received signal RF component r(t) and an undesirable transmitter leakage RF signal component l(t) appearing at the input to the base station receiver. C(t) cancels l(t), leaving r(t) to be processed by the receiver section of the base station.
Abstract translation: 本文公开的装置和方法在具有共位发射器和接收器的无线基站的接收链输入端实现RF接收带滤波器。 RF接收带滤波器包括自适应滤波器组件，用于对与无线基站相关联的发射链进行数字基带或中频信号x（n）的采样执行滤波操作。 实时地确定自适应滤波器传递函数，使得基带发送信号x（n）的采样被变换为消除基带信号z（n）。 然后对数字消除基带信号z（n）进行数模转换，并将所得到的模拟基带信号z（t）上变频以获得减法RF消除信号c（t）。 C（t）与期望的接收信号RF分量r（t）和出现在基站接收机的输入处的不期望的发射机泄漏RF信号分量l（t）相加。 C（t）取消l（t），使r（t）由基站的接收机部分处理。
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Patent Agency Ranking
公开(公告)号：US11329687B2
公开(公告)日：2022-05-10
申请号：US16983719
申请日：2020-08-03
Applicant: TEXAS INSTRUMENTS INCORPORATED
Abstract: A system includes: a host processor; a transceiver coupled to the host processor; and a power amplifier coupled to an output of the transceiver. The transceiver includes a transmit chain with digital pre-distortion (DPD) logic configured to: perform DPD correction operations on transmit data received by the transmit chain; and output corrected transmit data based on the performed DPD correction operations, wherein the output corrected transmit data is provided to the power amplifier.
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公开(公告)号：US11356125B2
公开(公告)日：2022-06-07
申请号：US16953947
申请日：2020-11-20
Applicant: Texas Instruments Incorporated
Inventor： Jawaharlal Tangudu , Yeswanth Guntupalli , Kalyan Gudipati , Robert Clair Keller , Wenjing Lu , Jaiganesh Balakrishnan , Harsh Garg , Bragadeesh S , Raju Kharataram Chaudhari , Francesco Dantoni
Abstract: An integrated circuit comprises an input, a digital step attenuator, an analog-to-digital converter, a first output, a second output, a first bandwidth filter, a first band attack detector, a first band decay detector, a second bandwidth filter, a second band attack detector, a second band decay detector, and an automatic gain control. The ADC is configured to output a digital signal including a first and a second frequency range. The first and second bandwidth filters are configured to extract respective digital signals comprising the first and second frequency ranges. The band attack and decay detectors are configured to detect band peaks or decays thereof such that the DSA and External AMP may be controlled by means of the AGC based on the detected band peaks or decays, and ADC attack and ADC decay.
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公开(公告)号：US20210159924A1
公开(公告)日：2021-05-27
申请号：US16953947
申请日：2020-11-20
Applicant: Texas Instruments Incorporated
Inventor： Jawaharlal Tangudu , Yeswanth Guntupalli , Kalyan Gudipati , Robert Clair Keller , Wenjing Lu , Jaiganesh Balakrishnan , Harsh Garg , Bragadeesh S , Raju Kharataram Chaudhari , Francesco Dantoni
Abstract: An integrated circuit comprises an input, a digital step attenuator, an analog-to-digital converter, a first output, a second output, a first bandwidth filter, a first band attack detector, a first band decay detector, a second bandwidth filter, a second band attack detector, a second band decay detector, and an automatic gain control. The ADC is configured to output a digital signal including a first and a second frequency range. The first and second bandwidth filters are configured to extract respective digital signals comprising the first and second frequency ranges. The band attack and decay detectors are configured to detect band peaks or decays thereof such that the DSA and External AMP may be controlled by means of the AGC based on the detected band peaks or decays, and ADC attack and ADC decay.
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公开(公告)号：US20170347490A1
公开(公告)日：2017-11-30
申请号：US15162888
申请日：2016-05-24
Inventor： Matthew David Romig , Robert Clair Keller , Ming Li , Yiqi Tang
CPC classification number: H05K7/20418 , H01Q1/02 , H01Q1/2283 , H01Q21/061 , H05K1/0204 , H05K7/20509 , H05K13/00 , H05K2201/066
Abstract: A heat dissipating antenna comprised of a low-attenuating heat spreader bonded to a high frequency antenna or antenna array.An integrated circuit with a wireless integrated circuit chip, and a heat dissipating antenna coupled to the wireless integrated circuit chip. A method of forming a heat dissipating antenna.
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公开(公告)号：US09001712B2
公开(公告)日：2015-04-07
申请号：US13872093
申请日：2013-04-27
Applicant: Texas Instruments Incorporated
Inventor： Nagarajan Viswanathan , Visvesvaraya Pentakota , Robert Clair Keller , Thomas Neu , Francesco Dantoni
CPC classification number: H04L5/1461 , H04B1/525
Abstract: Apparatus and methods disclosed herein implement an RF receive-band filter at a receive chain input of a wireless base station with a co-located transmitter and receiver. The RF receive-band filter includes an adaptive filter component to perform filtering operations on samples of a digital baseband or intermediate frequency signal x(n) from a transmit chain associated with the wireless base station. An adaptive filter transfer function is determined in real time such that samples of the baseband transmit signal x(n) are transformed into a cancellation baseband signal z(n). The digital cancelation baseband signal z(n) is then digital-to-analog converted and the resulting analog baseband signal z(t) is up-converted to obtain a subtractive RF cancelation signal c(t). C(t) is summed with a desirable received signal RF component r(t) and an undesirable transmitter leakage RF signal component l(t) appearing at the input to the base station receiver. C(t) cancels l(t), leaving r(t) to be processed by the receiver section of the base station.
Abstract translation: 本文公开的装置和方法在具有共位发射器和接收器的无线基站的接收链输入端实现RF接收带滤波器。 RF接收带滤波器包括自适应滤波器组件，用于对与无线基站相关联的发射链进行数字基带或中频信号x（n）的采样执行滤波操作。 实时地确定自适应滤波器传递函数，使得基带发送信号x（n）的采样被变换为消除基带信号z（n）。 然后对数字消除基带信号z（n）进行数模转换，并将所得到的模拟基带信号z（t）上变频以获得减法RF消除信号c（t）。 C（t）与期望的接收信号RF分量r（t）和出现在基站接收机的输入处的不期望的发射机泄漏RF信号分量l（t）相加。 C（t）取消l（t），使r（t）由基站的接收机部分处理。
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