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    Pullable clock oscillator
    2.
    发明授权
    Pullable clock oscillator 有权

    公开(公告)号：US10958213B2

    公开(公告)日：2021-03-23

    申请号：US16870582

    申请日：2020-05-08

    Applicant: Texas Instruments Incorporated

    Inventor： Ben-yong Zhang ,  Seong-Ryong Ryu ,  Ali Kiaei ,  Ting-Ta Yen ,  Kai Yiu Tam

    IPC: H03B5/36 ,  H03B1/04 ,  H03B5/32 ,  H03B1/02 ,  H03L7/099 ,  H03L7/093 ,  H03L7/089

    Abstract: A clock oscillator includes with a pullable BAW oscillator to generate an output signal with a target frequency. The BAW oscillator is based on a BAW resonator and voltage-controlled variable load capacitance, responsive to a capacitance control signal to provide a selectable load capacitance. An oscillator driver (such as a differential negative gm transconductance amplifier), is coupled to the BAW oscillator to provide an oscillation drive signal. The BAW oscillator is responsive to the oscillation drive signal to generate the output signal with a frequency based on the selectable load capacitance. The oscillator driver can include a bandpass filter network with a resonance frequency substantially at the target frequency.

    Pullable clock oscillator
    3.
    发明授权
    Pullable clock oscillator 有权

    公开(公告)号：US10651789B2

    公开(公告)日：2020-05-12

    申请号：US15719540

    申请日：2017-09-28

    Applicant: TEXAS INSTRUMENTS INCORPORATED

    Inventor： Ben-yong Zhang ,  Seong-Ryong Ryu ,  Ali Kiaei ,  Ting-Ta Yen ,  Kai Yiu Tam

    IPC: H03B5/36 ,  H03B1/04 ,  H03B5/32 ,  H03B1/02 ,  H03L7/099 ,  H03L7/093 ,  H03L7/089

    Abstract: A clock oscillator includes with a pullable BAW oscillator to generate an output signal with a target frequency. The BAW oscillator is based on a BAW resonator and voltage-controlled variable load capacitance, responsive to a capacitance control signal to provide a selectable load capacitance. An oscillator driver (such as a differential negative gm transconductance amplifier), is coupled to the BAW oscillator to provide an oscillation drive signal. The BAW oscillator is responsive to the oscillation drive signal to generate the output signal with a frequency based on the selectable load capacitance. The oscillator driver can include a bandpass filter network with a resonance frequency substantially at the target frequency.

    Beating high-Q resonators oscillator
    4.
    发明授权
    Beating high-Q resonators oscillator 有权

    公开(公告)号：US10523225B2

    公开(公告)日：2019-12-31

    申请号：US15690144

    申请日：2017-08-29

    Applicant: TEXAS INSTRUMENTS INCORPORATED

    Inventor： Bichoy Bahr ,  Baher Haroun ,  Ali Kiaei

    IPC: H03L7/24 ,  H03K3/03 ,  H03H9/54 ,  H03K3/013 ,  H03H9/58

    Abstract: For producing a low-power, low-phase noise oscillating signal using a self-injection locking oscillator, examples include: producing, using an oscillator, a signal having a base frequency component, an Mth harmonic component and a Pth harmonic component, in which M and P are selected integers and M>P>1; filtering the signal through one or more bandpass filters including at least two resonators, the filters having Q factor ≥5, the filters configured to pass the Mth and Pth harmonic components; multiplying the filtered Mth and Pth harmonic components together to produce a multiplied signal, and filtering the multiplied signal using a low pass filter to pass a difference between the filtered Mth and Pth harmonic components, the difference including a filtered beat frequency waveform; and injecting the filtered beat frequency waveform into the oscillator to injection lock the signal to the filtered beat frequency waveform.

    LOW-POWER LOW-PHASE-NOISE OSCILLATOR
    5.
    发明申请
    LOW-POWER LOW-PHASE-NOISE OSCILLATOR 审中-公开

    公开(公告)号：US20170085221A1

    公开(公告)日：2017-03-23

    申请号：US15366149

    申请日：2016-12-01

    Applicant: Texas Instruments Incorporated

    Inventor： Seong-Ryong Ryu ,  Ali Kiaei

    IPC: H03B5/32 ,  H03B5/12

    Abstract: The present disclosure describes a low-power, low-phase-noise (LPLPN) oscillator. The LPLPN oscillator includes a resonator load, an amplifier stage, and a loop gain control circuit. The resonator load is structured to resonate at a primary resonant frequency. The amplifier stage is coupled with the resonator load to develop a loop gain that peaks at the primary resonant frequency. The loop gain control circuit is coupled with the amplifier stage, and it is structured to regulate the loop gain for facilitating the amplifier stage to generate an oscillation signal at the primary resonant frequency and suppress a noise signal at a parasitic parallel resonant frequency (PPRF).

    Beating High-Q Resonators Oscillator
    6.
    发明申请
    Beating High-Q Resonators Oscillator 审中-公开

    公开(公告)号：US20190068198A1

    公开(公告)日：2019-02-28

    申请号：US15690144

    申请日：2017-08-29

    Applicant: TEXAS INSTRUMENTS INCORPORATED

    Inventor： Bichoy Bahr ,  Baher Haroun ,  Ali Kiaei

    IPC: H03L1/02 ,  H03K3/03 ,  H03H9/54 ,  H03L7/24

    Abstract: Methods and systems for producing a low-power, low-phase noise oscillating signal using a self-injection locking oscillator. Preferred embodiments include, for example, producing, using an oscillator, a signal having a base frequency component, an Mth harmonic component and a Pth harmonic component, wherein M and P are selected integers and M>P>1; filtering said signal through one or more bandpass filters comprising at least two resonators, said filters having Q factor ≥5, said filters configured to pass said Mth and Pth harmonic components; multiplying said filtered Mth and Pth harmonic components together to produce a multiplied signal, and filtering said multiplied signal using a low pass filter to pass a difference between said filtered Mth and Pth harmonic components, said difference comprising a filtered beat frequency waveform; and injecting said filtered beat frequency waveform into said oscillator to thereby injection lock said signal to said filtered beat frequency waveform.

    High Linearity Phase Interpolator
    7.
    发明申请
    High Linearity Phase Interpolator 审中-公开

    公开(公告)号：US20180131378A1

    公开(公告)日：2018-05-10

    申请号：US15346524

    申请日：2016-11-08

    Applicant: Texas Instruments Incorporated

    Inventor： Baher Haroun ,  Wenting Zhou ,  Kai Yiu Tam ,  Reza Hoshyar ,  Ali Kiaei

    IPC: H03L7/081 ,  H03L7/197

    CPC classification number: H03L7/16 ,  H03K23/00

    Abstract: A high linearity phase interpolator (PI) is disclosed. A phase value parameter indicative of a desired phase difference between an output signal and an input clock signal edge may be provided by control logic. A first capacitor may be charged for a first period of time with a first current that is proportional to the phase value parameter to produce a first voltage on the capacitor that is proportional to the phase value parameter. The first capacitor may be further charged for a second period of time with a second current that has a constant value to form a voltage ramp offset by the first voltage. A reference voltage may be compared to the voltage ramp during the second period of time. The output signal may be asserted at a time when the voltage ramp equals the reference voltage.

    Low-power low-phase-noise oscillator
    9.
    发明授权
    Low-power low-phase-noise oscillator 有权
    低功耗低相位噪声振荡器

    公开(公告)号：US09543891B2

    公开(公告)日：2017-01-10

    申请号：US14682726

    申请日：2015-04-09

    Applicant: Texas Instruments Incorporated

    Inventor： Seong-Ryong Ryu ,  Ali Kiaei

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

    CPC classification number: H03B5/326 ,  H03B5/1212 ,  H03B5/1271 ,  H03B5/1278 ,  H03B5/30 ,  H03B5/36 ,  H03B2200/0082 ,  H03B2200/009

    Abstract: The present disclosure describes a low-power, low-phase-noise (LPLPN) oscillator. The LPLPN oscillator includes a resonator load, an amplifier stage, and a loop gain control circuit. The resonator load is structured to resonate at a primary resonant frequency. The amplifier stage is coupled with the resonator load to develop a loop gain that peaks at the primary resonant frequency. The loop gain control circuit is coupled with the amplifier stage, and it is structured to regulate the loop gain for facilitating the amplifier stage to generate an oscillation signal at the primary resonant frequency and suppress a noise signal at a parasitic parallel resonant frequency (PPRF).

    Abstract translation: 本公开描述了一种低功率，低相位噪声（LPLPN）振荡器。 LPLPN振荡器包括谐振器负载，放大器级和环路增益控制电路。 谐振器负载被构造为在初级谐振频率下谐振。 放大器级与谐振器负载耦合以产生在初级谐振频率处峰值的环路增益。 环路增益控制电路与放大器级耦合，并且其被构造为调节环路增益，以便于放大器级在初级谐振频率处产生振荡信号，并以寄生并联谐振频率（PPRF）抑制噪声信号， 。

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