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    Seal ring for reducing noise coupling within a system-on-a-chip (SoC)
    1.
    发明授权
    Seal ring for reducing noise coupling within a system-on-a-chip (SoC) 有权
    用于减少片上系统（SoC）内的噪声耦合的密封环

    公开(公告)号：US07898056B1

    公开(公告)日：2011-03-01

    申请号：US12331373

    申请日：2008-12-09

    申请人： Mansour Keramat ,  Syed S. Islam ,  Mehrdad Heshami

    发明人： Mansour Keramat ,  Syed S. Islam ,  Mehrdad Heshami

    IPC分类号： H01L29/06 ,  H01L23/552

    CPC分类号： H01L23/585 ,  H01L23/564 ,  H01L2924/0002 ,  H01L2924/00

    摘要： Disclosed is a seal-ring architecture that can minimize noise injection from noisy digital circuits to sensitive analog and/or radio frequency (RF) circuits in system-on-a-chip (SoC) applications. In order to improve the isolation, the seal-ring structure contains cuts and ground connections to the segment which is close to the analog circuits. The cuts are such that the architecture is fully compatible with standard design rules and that the mechanical strength of the seal rings is not significantly sacrificed. Some embodiments also include a grounded p-tap ring between the analog circuits and the inner seal ring in order to improve isolation. Some embodiments also include a guard strip between the analog circuits and the digital circuits to minimize the noise injection through the substrate.

    摘要翻译： 公开了一种密封环结构，其可以将系统级芯片（SoC）应用中的噪声数字电路的噪声注入最小化到敏感的模拟和/或射频（RF）电路。 为了改善隔离度，密封圈结构包含与靠近模拟电路的段的切割和接地连接。 切割使得该结构与标准设计规则完全兼容，并且密封环的机械强度不被显着牺牲。 一些实施例还包括在模拟电路和内密封环之间的接地p抽头环，以改善隔离。 一些实施例还包括模拟电路和数字电路之间的保护条，以最小化通过衬底的噪声注入。

    Accurate resistance capacitance (RC) time constant calibration with metal-oxide-metal (MOM) capacitors for precision frequency response of integrated filters
    2.
    发明授权
    Accurate resistance capacitance (RC) time constant calibration with metal-oxide-metal (MOM) capacitors for precision frequency response of integrated filters 失效
    使用金属氧化物金属（MOM）电容器对集成滤波器进行精确频率响应的精确电阻电容（RC）时间常数校准

    公开(公告)号：US08364433B1

    公开(公告)日：2013-01-29

    申请号：US12338792

    申请日：2008-12-18

    申请人： Mansour Keramat ,  Syed S. Islam ,  Mehrdad Heshami

    发明人： Mansour Keramat ,  Syed S. Islam ,  Mehrdad Heshami

    IPC分类号： G01R27/00 ,  G01R35/00

    CPC分类号： H03H11/1291 ,  H03H2210/043

    摘要： A calibration system employed for use with a resistance capacitance (RC) filter having resistors and capacitors with parasitic capacitance associated therewith. The calibration system has a digital calibration circuit receiving a time constant signal and generating, based thereon, a control word of N digital bits. The calibration system includes an analog monitor circuit having monitor capacitance assembly having a particular equivalent resistor and capacitor configuration. The analog monitor circuit generates the time constant signal and includes N switches, where each switch is controlled by one of the N bits of the control word, each switch is configured to connect or disconnect one or more capacitors of the monitor capacitor assembly thereby generating a time constant signal that represents the time constant of the RC integrated filter.

    摘要翻译： 一种校准系统，用于与具有与其相关的寄生电容的电阻和电容器的电阻电容（RC）滤波器。 校准系统具有接收时间常数信号的数字校准电路，并且基于此产生N个数字位的控制字。 校准系统包括具有具有特定等效电阻器和电容器配置的监视电容组件的模拟监视器电路。 模拟监视器电路产生时间常数信号并且包括N个开关，其中每个开关由控制字的N位之一控制，每个开关被配置为连接或断开监视电容器组件的一个或多个电容器，从而产生 时间常数信号，表示RC集成滤波器的时间常数。

    Systems and methods for adjusting ultra-small metal-oxide-metal capacitors
    4.
    发明授权
    Systems and methods for adjusting ultra-small metal-oxide-metal capacitors 失效
    用于调节超小金属氧化物 - 金属电容器的系统和方法

    公开(公告)号：US08614472B1

    公开(公告)日：2013-12-24

    申请号：US13214136

    申请日：2011-08-19

    申请人： Syed S. Islam ,  Mansour Keramat

    发明人： Syed S. Islam ,  Mansour Keramat

    IPC分类号： H01L27/108 ,  H01L29/94

    CPC分类号： H01L23/5223 ,  H01L28/86 ,  H01L2924/0002 ,  H01L2924/00

    摘要： An integrated circuit metal oxide metal (MOM) variable capacitor includes a first plate; one or more pairs of second plates positioned on both sides of the first plate; one or more pairs of control plates positioned on both sides of the first plate and positioned between the pairs of second plates; and a switch coupled to each control plate and a fixed potential.

    摘要翻译： 集成电路金属氧化物金属（MOM）可变电容器包括第一板; 一对或多对定位在第一板两侧的第二板; 一对或多对控制板，其位于所述第一板的两侧并位于所述第二板对之间; 以及耦合到每个控制板和固定电位的开关。