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    DIFFERENTIAL ELECTRICAL BALANCE DUPLEXERS
    4.
    发明公开
    DIFFERENTIAL ELECTRICAL BALANCE DUPLEXERS 审中-公开

    公开(公告)号：US20240072839A1

    公开(公告)日：2024-02-29

    申请号：US17823292

    申请日：2022-08-30

    Applicant: Texas Instruments Incorporated

    Inventor： Sachin Kalia ,  Tolga Dinc ,  Swaminathan Sankaran ,  Sasank Garikapati

    IPC: H04B1/525 ,  H04B1/00 ,  H03H7/46 ,  H04L5/14

    CPC classification number: H04B1/525 ,  H04B1/0057 ,  H03H7/463 ,  H04L5/14

    Abstract: Electrical balance duplexers (EBDs). An example EBD includes a differential TX port coupled to a first coil, a differential RX port coupled to a second coil, a differential ANT port coupled to a third coil, and a differential BAL port coupled to a fourth coil. In some cases, the first and second coils are arranged such that magnetic flux cancellation is achieved between the two, thus isolating the TX port from the RX port. In some cases, DC isolation exists between the coils. During operation, the first coil may electromagnetically couple with the third coil and the fourth coil, and the second coil may electromagnetically couple with the third coil and the fourth coil. In some example cases, the first and second coils are each in their own metallization layer, and the third and fourth coils are in the same layer.

    Microelectromechanical system resonator-based oscillator
    6.
    发明授权
    Microelectromechanical system resonator-based oscillator 有权

    公开(公告)号：US11228280B1

    公开(公告)日：2022-01-18

    申请号：US17164588

    申请日：2021-02-01

    Applicant: TEXAS INSTRUMENTS INCORPORATED

    Inventor： Bichoy Bahr ,  Sachin Kalia ,  Swaminathan Sankaran

    IPC: H03B5/36 ,  H03B5/04 ,  H03B5/30 ,  H03B5/12

    Abstract: A device includes a MEMS resonator and oscillator circuit coupled to the MEMS resonator. The circuit includes a first transistor having a first control terminal and first and second current terminals, and a second transistor having a second control terminal and third and fourth current terminals. The circuit includes a resonator coupling network configured to inductively couple MEMS resonator terminals to the first and third current terminals, and to couple the first and third current terminals. The circuit includes a control terminal coupling network configured to couple the first and second control terminals, and to reduce a voltage swing at the first and second control terminals relative to a voltage swing at the first and third current terminals. The circuit includes a second terminal coupling network configured to couple the second and fourth current terminals. A second terminal coupling network resonant frequency is approximately that of MEMS resonator.

    Re-configurable single transformer quadrature voltage controlled oscillator
    7.
    发明授权
    Re-configurable single transformer quadrature voltage controlled oscillator 有权
    可重构单变压器正交压控振荡器

    公开(公告)号：US09490747B1

    公开(公告)日：2016-11-08

    申请号：US14986604

    申请日：2015-12-31

    Applicant: Texas Instruments Incorporated

    Inventor： Sachin Kalia ,  Bradley A. Kramer ,  Swaminathan Sankaran

    IPC: H03B27/00 ,  H03B5/12

    CPC classification number: H03B27/00 ,  H03B5/1212 ,  H03B5/1215 ,  H03B5/1228 ,  H03B5/1296 ,  H03B2200/0078

    Abstract: A quadrature voltage controlled oscillator (QVCO). The QVCO includes a first node for providing a first quadrature signal, a second node for providing a second quadrature signal, a third node for providing a third quadrature signal, and a fourth node for providing a fourth quadrature signal. The QVCO further includes a first coil connected between the first node and the second node and a second coil connected between the third node and the fourth node. The first coil and second coil are positively magnetically coupled.

    Abstract translation: 正交压控振荡器（QVCO）。 QVCO包括用于提供第一正交信号的第一节点，用于提供第二正交信号的第二节点，用于提供第三正交信号的第三节点和用于提供第四正交信号的第四节点。 QVCO还包括连接在第一节点和第二节点之间的第一线圈和连接在第三节点和第四节点之间的第二线圈。 第一线圈和第二线圈被正磁耦合。

    Broadband frequency multiplier with harmonic suppression
    8.
    发明授权
    Broadband frequency multiplier with harmonic suppression 有权

    公开(公告)号：US12132488B2

    公开(公告)日：2024-10-29

    申请号：US18148845

    申请日：2022-12-30

    Applicant: Texas Instruments Incorporated

    Inventor： Tolga Dinc ,  Sachin Kalia ,  Swaminathan Sankaran

    IPC: G06F1/08 ,  H03H7/01 ,  H03K5/00

    CPC classification number: H03K5/00006 ,  G06F1/08 ,  H03H7/0115 ,  H03H7/0161

    Abstract: Described embodiments include a circuit having a quadrature phase generator circuit having differential generator inputs, in-phase differential generator outputs and quadrature-phase differential generator outputs. A first frequency multiplier circuit has first differential multiplier inputs and a first multiplier output, wherein the first differential multiplier inputs are coupled to the in-phase differential generator outputs. A second frequency multiplier circuit has second differential multiplier inputs and a second multiplier output. The second multiplier differential inputs are coupled to the quadrature-phase differential generator outputs. A transformer includes a primary inductor and a secondary inductor, wherein the primary inductor is coupled between the first and second multiplier outputs, and the second inductor is coupled between an output voltage terminal and a ground terminal.

    SINGLE STAGE FREQUENCY MULTIPLIER USING DIFFERENT TYPES OF SIGNAL MIXING MODES
    10.
    发明申请
    SINGLE STAGE FREQUENCY MULTIPLIER USING DIFFERENT TYPES OF SIGNAL MIXING MODES 有权

    公开(公告)号：US20220352853A1

    公开(公告)日：2022-11-03

    申请号：US17694953

    申请日：2022-03-15

    Applicant: TEXAS INSTRUMENTS INCORPORATED

    Inventor： Sachin Kalia ,  Tolga Dinc ,  Swaminathan Sankaran

    IPC: H03D7/14 ,  H03D7/16 ,  H03D7/12

    Abstract: A frequency multiplier includes an input section having inputs to receive an input signal having an input frequency, a mixer section, and an output section magnetically coupled to the input section and generating an output signal in response to the input signal. The mixer section may be coupled to the input section by a common mode node forming a path for a common mode current to flow to the mixer section and be magnetically coupled to the common mode node. The input section may generate a signal current, and the mixer section may be magnetically coupled to the input section and be directly capacitively coupled to the input section through a capacitor in a signal current path. The mixer section may have differential inputs capacitively coupled to the input section and also be coupled to the input section through a current path. A current helper section may be coupled to the current path.

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