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公开(公告)号：US20090028217A1
公开(公告)日：2009-01-29
申请号：US11878581
申请日：2007-07-25
CPC分类号： H03B21/025 , H03B19/00 , H03L7/0891 , H03L7/183 , H04B1/7136 , H04B1/71635 , H04B2001/71365
摘要： An ultra-wideband (UWB) frequency synthesizer is provided for use in UWB communication. The UWB frequency synthesizer may include a first section and a second section. The first section may be configured to generate a first plurality of frequencies. The second section may be coupled to the first section and configured to generate a second plurality of frequencies respectively corresponding to individual channels of UWB bandwidth based upon the first plurality of frequencies. Further, the first section is configured to include a voltage-controlled oscillator (VCO) providing a base frequency fvco corresponding to the UWB bandwidth, and to generate the first plurality of frequencies based on a single phase-locked loop (PLL) and a reference frequency provided to the single PLL based on the base frequency fvco.
摘要翻译： 提供超宽带（UWB）频率合成器用于UWB通信。 UWB频率合成器可以包括第一部分和第二部分。 第一部分可以被配置为产生第一多个频率。 第二部分可以耦合到第一部分，并且被配置为基于第一多个频率产生分别对应于UWB带宽的各个信道的第二多个频率。 此外，第一部分被配置为包括提供对应于UWB带宽的基本频率fvco的压控振荡器（VCO），并且基于单个锁相环（PLL）和参考信号产生第一多个频率 基于频率fvco提供给单个PLL的频率。
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2.发明授权Voltage controlled oscillator with anti supply voltage variation and/or process variation 失效具有抗电源电压变化和/或工艺变化的压控振荡器公开(公告)号：US07449972B2
公开(公告)日：2008-11-11
申请号：US11183901
申请日：2005-07-19
申请人： Kai-Cheung Juang , Horng-Yuan Shih , Peng-Un Su
发明人： Kai-Cheung Juang , Horng-Yuan Shih , Peng-Un Su
IPC分类号： H03L5/00
CPC分类号： H03B5/04
摘要： A voltage controlled oscillator with anti supply voltage variation and/or process variation includes an oscillation circuit for outputting an oscillatory signal; a current source coupled to the oscillation circuit for providing an input current to the oscillation circuit; and a variation compensation circuit for compensating the variations generated by the supply voltage and process. The variation compensation circuit includes a peak detector for generating a peak voltage proportional to the amplitude of the oscillatory signal; a compensating voltage generator for generating a reference voltage according to the process variation so that the oscillation circuit achieves the same working conditions under the process variation; and a comparator for comparing the peak voltage and the reference voltage to generate a control voltage. When the variation compensation circuit includes an amplifier, the supply voltage can be compensated.
摘要翻译： 具有抗电压变化和/或过程变化的压控振荡器包括用于输出振荡信号的振荡电路; 耦合到振荡电路的电流源，用于向振荡电路提供输入电流; 以及用于补偿由电源电压和处理产生的变化的变化补偿电路。 该变化补偿电路包括：峰值检测器，用于产生与振荡信号幅度成比例的峰值电压; 补偿电压发生器，用于根据工艺变化产生参考电压，使得振荡电路在工艺变化下达到相同的工作条件; 以及用于比较峰值电压和参考电压以产生控制电压的比较器。 当变差补偿电路包括放大器时，可以补偿电源电压。
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公开(公告)号：US08441313B2
公开(公告)日：2013-05-14
申请号：US13530126
申请日：2012-06-22
IPC分类号： H04B1/10
CPC分类号： H04L25/0278
摘要： A current-mode analog baseband apparatus is provided. The apparatus includes a current-mode low-order filter, a current-mode programmable gain amplifier (PGA) unit and a high-order filter. The input impedance is smaller than the output impedance in the current-mode low-order filter. An input terminal of the current-mode PGA unit is connected to an output terminal of the current-mode low-order filter. An input terminal of the high-order filter is connected to an output terminal of the current-mode PGA unit.
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公开(公告)号：US20120262228A1
公开(公告)日：2012-10-18
申请号：US13530126
申请日：2012-06-22
IPC分类号： H04B15/00
CPC分类号： H04L25/0278
摘要： A current-mode analog baseband apparatus is provided. The apparatus includes a current-mode low-order filter, a current-mode programmable gain amplifier (PGA) unit and a high-order filter. The input impedance is smaller than the output impedance in the current-mode low-order filter. An input terminal of the current-mode PGA unit is connected to an output terminal of the current-mode low-order filter. An input terminal of the high-order filter is connected to an output terminal of the current-mode PGA unit.
摘要翻译： 提供电流模式基带装置。 该装置包括电流模式低阶滤波器，电流模式可编程增益放大器（PGA）单元和高阶滤波器。 输入阻抗小于电流模式低阶滤波器的输出阻抗。 电流模式PGA单元的输入端连接到当前模式低阶滤波器的输出端。 高阶滤波器的输入端连接到电流模式PGA单元的输出端。
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公开(公告)号：US20120019323A1
公开(公告)日：2012-01-26
申请号：US12855713
申请日：2010-08-13
CPC分类号： H03F3/45183 , H03F1/0277 , H03F3/189 , H03F3/193 , H03F3/211 , H03F3/72 , H03F2200/27 , H03F2200/294 , H03F2200/36 , H03F2200/405 , H03F2200/91 , H03F2203/21142 , H03F2203/45394 , H03F2203/45646 , H03F2203/7206 , H03F2203/7236 , H03G3/3078
摘要： A current-mode amplifier including an input stage, a feedback circuit and an output stage is provided. The input stage has an input terminal for receiving an input current of the current-mode amplifier. The input stage generates a corresponding inner current in accordance with the input current and a feedback current. The feedback circuit is connected to the input stage. The feedback circuit generates the corresponding feedback current in accordance with the inner current of the input stage. An input terminal of the output stage is connected to an output terminal of the input stage. An output terminal of the output stage serves as an output terminal of the current-mode amplifier.
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公开(公告)号：US20120019314A1
公开(公告)日：2012-01-26
申请号：US12855716
申请日：2010-08-13
IPC分类号： H04B15/00
CPC分类号： H04L25/0278
摘要： A current-mode analog baseband apparatus is provided. The apparatus includes a current-mode low-order filter, a current-mode programmable gain amplifier (PGA) unit and a high-order filter. The input impedance is smaller than the output impedance in the current-mode low-order filter. An input terminal of the current-mode PGA unit is connected to an output terminal of the current-mode low-order filter. An input terminal of the high-order filter is connected to an output terminal of the current-mode PGA unit.
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公开(公告)号：US20110084863A1
公开(公告)日：2011-04-14
申请号：US12639003
申请日：2009-12-16
申请人： Huan-Ke Chiu , Horng-Yuan Shih , Chiou-Bang Chen , Tzu-Chan Chueh
发明人： Huan-Ke Chiu , Horng-Yuan Shih , Chiou-Bang Chen , Tzu-Chan Chueh
CPC分类号： G04F10/005
摘要： A pipeline time-to-digital converter (TDC) is provided. The pipeline TDC includes a plurality of TDC cells. Each of the TDC cells includes a delay unit, an output unit and a determination unit. The delay unit receives a first clock signal and a first reference signal output from a previous stage TDC cell. The delay unit generates sampling phases in a period between a trigger edge of the first reference signal and a trigger edge of the first clock signal, and samples the first clock signal to obtain sampling values in accordance with the sampling phases. The output unit calculates the sampling values for outputting a conversion value. The determination unit uses and analyses the sampling values and the sampling phases for outputting time residue to a next stage TDC cell.
摘要翻译： 提供流水线时间数字转换器（TDC）。 流水线TDC包括多个TDC单元。 TDC单元中的每一个包括延迟单元，输出单元和确定单元。 延迟单元接收从前一级TDC单元输出的第一时钟信号和第一参考信号。 延迟单元在第一参考信号的触发边沿和第一时钟信号的触发沿之间的周期内产生采样相位，并且对第一时钟信号进行采样以根据采样相位获得采样值。 输出单元计算用于输出转换值的采样值。 确定单元使用并分析用于将时间残差输出到下一级TDC单元的采样值和采样相位。
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公开(公告)号：US07756266B2
公开(公告)日：2010-07-13
申请号：US11266414
申请日：2005-11-03
申请人： Peng-Un Su , Horng-Yuan Shih , Ming-Ching Kuo
发明人： Peng-Un Su , Horng-Yuan Shih , Ming-Ching Kuo
CPC分类号： H03K17/223 , H03K17/161 , H03K2217/0036
摘要： A device for voltage-noise rejection and fast start-up is provided. It comprises a low-pass filter connected to a voltage source, a voltage-controlled switch connected in parallel with the low-pass filter, and an auxiliary start-up element connected to a DC-only voltage output. By using a transistor operating in the triode region and a capacitor with suitable capacitance, it is suitable for integration to form a low-frequency low-pass pole to suppress the noise in the reference current. The auxiliary start-up element overcomes the large turn on time caused by the low frequency low-pass pole. As there is no static current during normal operation, the power consumption for the device is low.
摘要翻译： 提供了一种用于电压噪声抑制和快速启动的设备。 它包括连接到电压源的低通滤波器，与低通滤波器并联连接的压控开关，以及连接到仅DC电压输出的辅助启动元件。 通过使用在三极管区域工作的晶体管和具有合适电容的电容器，适合集成形成低频低通极，以抑制参考电流中的噪声。 辅助启动元件克服了低频低通极引起的大的导通时间。 由于在正常运行期间没有静态电流，器件的功耗较低。
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9.发明申请COHERENT TUNABLE FILTER APPARATUS AND WIRELESS COMMUNICATION FRONT-END CIRCUIT THEREOF 有权相关的TUNABLE滤波器和无线通信前端电路公开(公告)号：US20090170456A1
公开(公告)日：2009-07-02
申请号：US12126941
申请日：2008-05-26
申请人： Chien-Nan Kuo , Horng-Yuan Shih , Yi-Hsin Pang
发明人： Chien-Nan Kuo , Horng-Yuan Shih , Yi-Hsin Pang
IPC分类号： H04B1/18
CPC分类号： H04B1/0053
摘要： A front-end circuit with coherent tunable filters is provided. The circuit includes a first filter, an amplifier, and a second filter. The amplifier is coupled to the first filter, and the second filter is coupled to the amplifier. Furthermore, the amplifier is placed between the first and second filters. The first filter has a first tunable intermediate frequency, and is used to filter a received signal. The amplifier is used to amplify the output of the first filter. The second filter has a second tunable intermediate frequency, and is used to filter the output of the amplifier. The first and second intermediate frequencies have a coherent-tuning relation with each other.
摘要翻译： 提供了具有相干可调谐滤波器的前端电路。 电路包括第一滤波器，放大器和第二滤波器。 放大器耦合到第一滤波器，第二滤波器耦合到放大器。 此外，放大器被放置在第一和第二滤光器之间。 第一滤波器具有第一可调谐中频，并用于对接收信号进行滤波。 放大器用于放大第一个滤波器的输出。 第二个滤波器具有第二个可调谐的中频，用于对放大器的输出进行滤波。 第一和第二中频具有彼此的相干调谐关系。
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10.发明申请Voltage controlled oscillator with anti supply voltage variation and/or process variation 失效具有抗电源电压变化和/或工艺变化的压控振荡器公开(公告)号：US20060158271A1
公开(公告)日：2006-07-20
申请号：US11183901
申请日：2005-07-19
申请人： Kai-Cheung Juang , Horng-Yuan Shih , Peng-Un Su
发明人： Kai-Cheung Juang , Horng-Yuan Shih , Peng-Un Su
IPC分类号： H03B1/00
CPC分类号： H03B5/04
摘要： A voltage controlled oscillator with anti supply voltage variation and/or process variation includes an oscillation circuit for outputting an oscillatory signal; a current source coupled to the oscillation circuit for providing an input current to the oscillation circuit; and a variation compensation circuit for compensating the variations generated by the supply voltage and process. The variation compensation circuit includes a peak detector for generating a peak voltage proportional to the amplitude of the oscillatory signal; a compensating voltage generator for generating a reference voltage according to the process variation so that the oscillation circuit achieves the same working conditions under the process variation; and a comparator for comparing the peak voltage and the reference voltage to generate a control voltage. When the variation compensation circuit includes an amplifier, the supply voltage can be compensated.
摘要翻译： 具有抗电压变化和/或过程变化的压控振荡器包括用于输出振荡信号的振荡电路; 耦合到振荡电路的电流源，用于向振荡电路提供输入电流; 以及用于补偿由电源电压和处理产生的变化的变化补偿电路。 该变化补偿电路包括：峰值检测器，用于产生与振荡信号幅度成比例的峰值电压; 补偿电压发生器，用于根据工艺变化产生参考电压，使得振荡电路在工艺变化下达到相同的工作条件; 以及用于比较峰值电压和参考电压以产生控制电压的比较器。 当变差补偿电路包括放大器时，可以补偿电源电压。
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