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    • 41. 发明授权
    • Track and hold architecture with tunable bandwidth
    • 跟踪和保持具有可调带宽的架构
    • US09013339B2
    • 2015-04-21
    • US13551950
    • 2012-07-18
    • Robert F. PayneMarco Corsi
    • Robert F. PayneMarco Corsi
    • H03M1/00H03M1/08H03M1/12
    • H03M1/08H03M1/1215
    • To date, bandwidth mismatch within time-interleaved (TI) analog-to-digital converters (ADCs) has been largely ignored because compensation for bandwidth mismatch is performed by digital post-processing, namely finite impulse response filters. However, the lag from digital post-processing is prohibitive in high speed systems, indicating a need for blind mismatch compensation. Even with blind bandwidth mismatch estimation, though, adjustment of the filter characteristics of track-and-hold (T/H) circuits within the TI ADCs can be difficult. Here, a T/H circuit architecture is provided that uses variations of the gate voltage of a sampling switch (which varies the “on” resistance of the sampling switch) to change the bandwidth of the T/H circuits so as to precisely match the bandwidths.
    • 到目前为止,时间交织(TI)模数转换器(ADC)中的带宽不匹配已被大大忽略,因为通过数字后处理(即有限脉冲响应滤波器)执行带宽不匹配的补偿。 然而,数字后处理的滞后在高速系统中是禁止的,表明需要盲目错配补偿。 即使使用盲带宽失配估计,TI ADC内的跟踪保持(T / H)电路的滤波特性的调整也是困难的。 这里,提供了使用采样开关的栅极电压的变化(其改变采样开关的“开”电阻)的T / H电路架构,以改变T / H电路的带宽,以便精确匹配 带宽。
    • 43. 发明授权
    • Reduced offset comparator
    • 减少偏移比较器
    • US08513980B2
    • 2013-08-20
    • US13281227
    • 2011-10-25
    • Robert F. PayneBaher S. Haroun
    • Robert F. PayneBaher S. Haroun
    • H03K5/22
    • H03K5/2481
    • An apparatus is provided. The apparatus comprises backend circuitry and pairs of redundant input circuits. Each pair of redundant input circuits is configured to form a differential pair of transistors, and each redundant input circuit includes a multiplexer and a set of transistors. The multiplexer is coupled to the backend circuitry, and each transistor from the set of transistors has a first passive electrode, a second passive electrode, and a control electrode. The first passive electrode of each transistor from the set of transistors is coupled to the multiplexer, and the control electrodes from the set of transistors are coupled together.
    • 提供了一种装置。 该装置包括后端电路和冗余输入电路对。 每对冗余输入电路被配置为形成差分对晶体管,并且每个冗余输入电路包括多路复用器和一组晶体管。 多路复用器耦合到后端电路,并且来自该组晶体管的每个晶体管具有第一无源电极,第二无源电极和控制电极。 来自晶体管组的每个晶体管的第一无源电极耦合到多路复用器,并且来自该组晶体管的控制电极耦合在一起。
    • 45. 发明授权
    • Track and hold architecture with tunable bandwidth
    • 跟踪和保持具有可调带宽的架构
    • US08248282B2
    • 2012-08-21
    • US12857674
    • 2010-08-17
    • Robert F. PayneMarco Corsi
    • Robert F. PayneMarco Corsi
    • H03M1/00
    • H03M1/08H03M1/1215
    • To date, bandwidth mismatch within time-interleaved (TI) analog-to-digital converters (ADCs) has been largely ignored because compensation for bandwidth mismatch is performed by digital post-processing, namely finite impulse response filters. However, the lag from digital post-processing is prohibitive in high speed systems, indicating a need for blind mismatch compensation. Even with blind bandwidth mismatch estimation, though, adjustment of the filter characteristics of track-and-hold (T/H) circuits within the TI ADCs can be difficult. Here, a T/H circuit architecture is provided that uses variations of the gate voltage of a sampling switch (which varies the “on” resistance of the sampling switch) to change the bandwidth of the T/H circuits so as to precisely match the bandwidths.
    • 到目前为止,时间交织(TI)模数转换器(ADC)中的带宽不匹配已被大大忽略,因为通过数字后处理(即有限脉冲响应滤波器)执行带宽不匹配的补偿。 然而,数字后处理的滞后在高速系统中是禁止的,表明需要盲目错配补偿。 即使使用盲带宽失配估计,TI ADC内的跟踪保持(T / H)电路的滤波特性的调整也是困难的。 这里,提供了使用采样开关的栅极电压的变化(其改变采样开关的“开”电阻)的T / H电路架构,以改变T / H电路的带宽,以便精确匹配 带宽。
    • 46. 发明授权
    • Clock buffer
    • 时钟缓冲
    • US07990188B2
    • 2011-08-02
    • US13017436
    • 2011-01-31
    • Robert F. PayneMarco CorsiTien-Ling Hsieh
    • Robert F. PayneMarco CorsiTien-Ling Hsieh
    • H03B1/00
    • H03M1/002H03M1/1245
    • An apparatus is provided. The apparatus comprises a first bipolar junction transistor (BJT) differential pair having a first BJT and a second BJT, a second BJT differential pair having a third BJT and a fourth BJT, a first clamp having a fifth BJT and a sixth BJT, and a second clamp having a seventh BJT and an eighth BJT. The collector and base of the third BJT are respectively coupled to the collector and base of the first BJT, and the collector and base of the fourth BJT are respectively coupled to the collector and base of the second BJT. The bases of first, second, third, and fourth BJTs receive an input clock signal. The emitters of the fifth and sixth BJTs are coupled to the collectors of the first and third BJTs, while the emitters of the seventh and eight BJTs are coupled to the collectors of the second and fourth BJTs. The bases of the fifth and seventh BJT are adapted to receive a low clamping voltage, and the bases of the sixth and eighth BJTs are adapted to receive a high clamping voltage. Additionally, the first and second clamps is coupled to the collectors of the first, second, third, and fourth BJTs.
    • 提供了一种装置。 该装置包括具有第一BJT和第二BJT的第一双极结型晶体管(BJT)差分对,具有第三BJT和第四BJT的第二BJT差分对,具有第五BJT和第六BJT的第一钳位,以及 第二夹具具有第七BJT和第八BJT。 第三BJT的集电极和基极分别耦合到第一BJT的集电极和基极,并且第四BJT的集电极和基极分别耦合到第二BJT的集电极和基极。 第一,第二,第三和第四BJT的基极接收输入时钟信号。 第五和第六BJT的发射器耦合到第一和第三BJT的集电极,而第七和第八BJT的发射极耦合到第二和第四BJT的集电极。 第五和第七BJT的基极适于接收低钳位电压,并且第六和第八BJT的基极适于接收高钳位电压。 另外,第一和第二夹具耦合到第一,第二,第三和第四BJT的收集器。
    • 47. 发明授权
    • Clock buffer
    • US07906995B2
    • 2011-03-15
    • US12393188
    • 2009-02-26
    • Robert F. PayneMarco CorsiTien-Ling Hsieh
    • Robert F. PayneMarco CorsiTien-Ling Hsieh
    • H03B1/00
    • H03M1/002H03M1/1245
    • An apparatus is provided. The apparatus comprises a first bipolar junction transistor (BJT) differential pair having a first BJT and a second BJT, a second BJT differential pair having a third BJT and a fourth BJT, a first clamp having a fifth BJT and a sixth BJT, and a second clamp having a seventh BJT and an eighth BJT. The collector and base of the third BJT are respectively coupled to the collector and base of the first BJT, and the collector and base of the fourth BJT are respectively coupled to the collector and base of the second BJT. The bases of first, second, third, and fourth BJTs receive an input clock signal. The emitters of the fifth and sixth BJTs are coupled to the collectors of the first and third BJTs, while the emitters of the seventh and eight BJTs are coupled to the collectors of the second and fourth BJTs. The bases of the fifth and seventh BJT are adapted to receive a low clamping voltage, and the bases of the sixth and eighth BJTs are adapted to receive a high clamping voltage. Additionally, the first and second clamps is coupled to the collectors of the first, second, third, and fourth BJTs.
    • 48. 发明授权
    • Error correction method and apparatus
    • 纠错方法及装置
    • US07825846B2
    • 2010-11-02
    • US12393207
    • 2009-02-26
    • Robert F. PayneMarco Corsi
    • Robert F. PayneMarco Corsi
    • H03M1/38
    • G05F3/265
    • A switched current source is provided. The switched current source is generally comprised of transistors and resistors, and the source has a high output impedance. Included with the switched current source is an error correction transistor and a resistor that cooperate to feed a current back through a bias transistor to correct an error that generally results from the current gains or β's of transistors within the switched current source. To accomplish this, however, the resistor is selected to have a value that is sufficiently large such that current from the error correction transistor flows back through the bias transistor.
    • 提供开关电流源。 开关电流源通常由晶体管和电阻组成,源极具有高输出阻抗。 与切换的电流源一起包括纠错晶体管和电阻器,其协作以通过偏置晶体管馈送电流以校正通常由开关电流源内的晶体管的电流增益或电流导致的误差。 然而,为了实现这一点,电阻器被选择为具有足够大的值,使得来自误差校正晶体管的电流流过偏置晶体管。