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    RECONFIGURABLE RADAR TRANSMITTER
    141.
    发明申请
    RECONFIGURABLE RADAR TRANSMITTER 审中-公开

    公开(公告)号：US20190044551A1

    公开(公告)日：2019-02-07

    申请号：US15842589

    申请日：2017-12-14

    Applicant: International Business Machines Corporation

    Inventor： Tolga Dinc ,  Mark A. Ferriss ,  Daniel Joseph Friedman ,  Wooram Lee ,  Bodhisatwa Sadhu ,  Alberto Valdes Garcia

    IPC: H04B1/00 ,  G01S13/76 ,  H03F3/20

    Abstract: Techniques that facilitate reconfigurable transmission of a radar frequency signal are provided. In one example, a system includes a signal generator and a power modulator. The signal generator provides a radar waveform signal from a set of radar waveform signals. The power modulator divides a local oscillator signal associated with a first frequency and a first amplitude into a first local oscillator signal and a second local oscillator signal. The power modulator also generates a radio frequency signal associated with a second frequency and a second amplitude based on the radar waveform signal, the first local oscillator signal and the second local oscillator signal.

    Transformer based shielded oscillator
    142.
    发明授权
    Transformer based shielded oscillator 有权

    公开(公告)号：US10153727B2

    公开(公告)日：2018-12-11

    申请号：US15153043

    申请日：2016-05-12

    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION

    Inventor： Tejasvi Anand ,  Mark A. Ferriss ,  Bodhisatwa Sadhu ,  Alberto Valdes Garcia

    IPC: H03B5/08 ,  H03B5/12 ,  H03B5/18

    Abstract: An oscillator includes a first output node and a second output node. There is a tank circuit coupled between the first output node and the second output node. There is a first transistor having a first node, a second node coupled to a current source, and a control node coupled to the second output node. There is a second transistor having a first node, a second node coupled to the current source, and a control node coupled to the first output node. There is a first inductor coupled in series between the first node of the first transistor and the first output node. There is a second inductor coupled in series between the first node of the second transistor and the second output node.

    BIPOLAR JUNCTION TRANSISTOR BASED SWITCHED CAPACITORS
    146.
    发明申请
    BIPOLAR JUNCTION TRANSISTOR BASED SWITCHED CAPACITORS 审中-公开

    公开(公告)号：US20180048264A1

    公开(公告)日：2018-02-15

    申请号：US15723841

    申请日：2017-10-03

    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION

    Inventor： Alberto Valdes Garcia ,  Bodhisatwa Sadhu ,  Jahnavi Sharma

    IPC: H03B5/12

    CPC classification number: H03B5/1265 ,  H03B5/1206 ,  H03B5/1215 ,  H03B5/1231 ,  H03B2200/0062 ,  H03B2200/009

    Abstract: A switched capacitor is provided. The switched capacitor includes a pair of parallel component stacks. Each stack is connected to a common top node and a common bottom node. Each stack includes a BJT. Each stack further includes a first resistor in series with the BJT and having a first side connected to a collector of the BJT at an intermediate node in a same one of the stacks and a second side connected to the common top node. Each stack also includes a capacitor having a first side connected to the intermediate node and a second side for providing an impedance. Each stack additionally includes a second resistor having a first side connected to a base of the BJT to prevent base-current surge in the BJT and a second side connected to a switch base control signal that selectively turns the BJT on or off.

    MILLIMETER-WAVE COMMUNICATIONS ON A MULTIFUNCTION PLATFORM
    147.
    发明申请
    MILLIMETER-WAVE COMMUNICATIONS ON A MULTIFUNCTION PLATFORM 有权

    公开(公告)号：US20170338563A1

    公开(公告)日：2017-11-23

    申请号：US15158055

    申请日：2016-05-18

    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION

    Inventor： Xiaoxiong Gu ,  Duixian Liu ,  Bodhisatwa Sadhu ,  Alberto Valdes Garcia

    IPC: H01Q9/04 ,  H01Q1/24 ,  H01Q1/48 ,  H04B1/04

    CPC classification number: H01Q9/0407 ,  H01Q1/242 ,  H01Q1/48 ,  H01Q21/08 ,  H04B2001/0408

    Abstract: A millimeter-wave (MMW) communication system may include an antenna array structure operating within a MMW band, having both a first antenna coupling point and a second antenna coupling point, whereby the first and the second location of the antenna coupling points are within a coplanar surface on which the antenna array structure is formed. The system may further include a first MMW transmitter that couples a first data modulated MMW signal to the first antenna coupling point and a second MMW transmitter that couples a second data modulated MMW signal to the second antenna coupling point. Coupling the first data modulated MMW signal to the first antenna coupling point generates a first MMW radio signal transmitted at a first propagation direction and coupling the second data modulated MMW signal to the second antenna coupling point generates a second MMW radio signal transmitted at a second propagation direction.

    Continuously tunable delay line
    149.
    发明授权
    Continuously tunable delay line 有权

    公开(公告)号：US09660625B1

    公开(公告)日：2017-05-23

    申请号：US15145173

    申请日：2016-05-03

    Applicant: International Business Machines Corporation

    Inventor： Wooram Lee ,  Alberto Valdes Garcia

    IPC: H03K5/14 ,  H03F1/02 ,  H03K5/00

    CPC classification number: H03K5/14 ,  H03F1/0277 ,  H03F3/191 ,  H03F3/45098 ,  H03F2203/45662 ,  H03K2005/00019

    Abstract: An apparatus includes a first conductive path comprising a first set of inductive elements connected in series, a second conductive path comprising a second set of inductive elements connected in series, each inductive element of the second set of inductive elements inductively coupled to, and having a mutual capacitance with, a corresponding inductive element of the first set of inductive elements. In some embodiments, the apparatus further includes a first amplifier having an amplifier input and an amplifier output, the amplifier output electrically connected to a proximal end of the first conductive path or the second conductive path. The described apparatus delays a signal according to the gain of the input amplifier. A method that uses the described apparatus is also disclosed herein.

    Removing deterministic phase errors from fractional-N PLLs
    150.
    发明授权
    Removing deterministic phase errors from fractional-N PLLs 有权
    从分数N个PLL中消除确定性相位误差

    公开(公告)号：US09337852B2

    公开(公告)日：2016-05-10

    申请号：US14920440

    申请日：2015-10-22

    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION

    Inventor： Herschel A. Ainspan ,  Mark A. Ferriss ,  Daniel J. Friedman ,  Alexander V. Rylyakov ,  Bodhisatwa Sadhu ,  Alberto Valdes Garcia

    IPC: H03L7/06 ,  H03L7/197 ,  H03L7/081 ,  H03L7/085 ,  H03L7/099

    CPC classification number: H03L7/1974 ,  H03L7/081 ,  H03L7/085 ,  H03L7/093 ,  H03L7/099 ,  H03L7/0992 ,  H03L7/1976 ,  H03L2207/06

    Abstract: Methods and devices for phase adjustment include a phase detector that is configured to compare a reference clock and a feedback clock and to generate two output signals. A difference in time between pulse widths of the two output signals corresponds to a phase difference between the reference clock and the feedback clock. A programmable delay line is configured to delay an earlier output signal in accordance with a predicted deterministic phase error. An oscillator is configured to generate a feedback signal in accordance with the delayed output signal. A divider is configured to divide a frequency of the oscillator output by an integer N. The integer N is varied to achieve an average fractional divide ratio and the predicted deterministic phase error is based on the average divide ratio and an instantaneous divide ratio.

    Abstract translation: 用于相位调整的方法和装置包括相位检测器，其被配置为比较参考时钟和反馈时钟并产生两个输出信号。 两个输出信号的脉冲宽度之间的时间差对应于参考时钟和反馈时钟之间的相位差。 可编程延迟线被配置为根据预测的确定性相位误差来延迟较早的输出信号。 振荡器被配置为根据延迟的输出信号产生反馈信号。 分频器被配置为将振荡器输出的频率除以整数N.整数N被改变以实现平均分数除法比，并且预测的确定性相位误差基于平均分频比和瞬时分频比。

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