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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：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：US08289080B2
公开(公告)日：2012-10-16
申请号：US12855713
申请日：2010-08-13
IPC分类号： H03F3/45
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.
摘要翻译： 提供了包括输入级，反馈电路和输出级的电流模式放大器。 输入级具有用于接收电流模式放大器的输入电流的输入端子。 输入级根据输入电流和反馈电流产生相应的内部电流。 反馈电路连接到输入级。 反馈电路根据输入级的内部电流产生相应的反馈电流。 输出级的输入端连接到输入级的输出端。 输出级的输出端用作电流模式放大器的输出端。
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公开(公告)号：US20090167577A1
公开(公告)日：2009-07-02
申请号：US12124174
申请日：2008-05-21
IPC分类号： H03M1/10
CPC分类号： H03F3/45475 , H03F3/45977 , H03F2203/45048 , H03F2203/45101 , H03F2203/45136 , H03F2203/45212
摘要： A circuit and a method for calibrating the direct-current offset in the signal output from a signal processing unit are disclosed. The calibration circuit includes a 1-bit quantizer, a control logic unit and a digital-to-analog converter. The 1-bit quantizer is coupled to the output end of the signal processing unit for receiving and detecting a direct-current offset component in the output signal so as to obtain quantization information. The control logic unit is coupled to the 1-bit quantizer for sequentially setting one of a plurality of bits of a compensation value and updating the set bit according to the quantization information. The digital-to-analog converter is coupled to the control logic unit for compensating the direct-current offset component in the signal output from the signal processing unit according to the compensation value.
摘要翻译： 公开了一种用于校准从信号处理单元输出的信号中的直流偏移的电路和方法。 校准电路包括1位量化器，控制逻辑单元和数模转换器。 1位量化器耦合到信号处理单元的输出端，用于接收和检测输出信号中的直流偏移分量，以获得量化信息。 控制逻辑单元耦合到1位量化器，用于顺序地设置补偿值的多个位中的一个，并根据量化信息更新置位。 数模转换器耦合到控制逻辑单元，用于根据补偿值补偿从信号处理单元输出的信号中的直流偏移分量。
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公开(公告)号：US08427230B2
公开(公告)日：2013-04-23
申请号：US12855716
申请日：2010-08-13
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.
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：US20120019325A1
公开(公告)日：2012-01-26
申请号：US12855710
申请日：2010-08-13
IPC分类号： H03F1/00
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.
摘要翻译： 提供了包括输入级，反馈电路和输出级的电流模式放大器。 输入级具有用于接收电流模式放大器的输入电流的输入端子。 输入级根据输入电流和反馈电流产生相应的内部电流。 反馈电路连接到输入级。 反馈电路根据输入级的内部电流产生相应的反馈电流。 输出级的输入端连接到输入级的输出端。 输出级的输出端用作电流模式放大器的输出端。
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公开(公告)号：US07629906B2
公开(公告)日：2009-12-08
申请号：US12124174
申请日：2008-05-21
IPC分类号： H03M1/06
CPC分类号： H03F3/45475 , H03F3/45977 , H03F2203/45048 , H03F2203/45101 , H03F2203/45136 , H03F2203/45212
摘要： A circuit and a method for calibrating the direct-current offset in the signal output from a signal processing unit are provided. The calibration circuit includes a 1-bit quantizer, a control logic unit and a digital-to-analog converter. The 1-bit quantizer is coupled to the output end of the signal processing unit for receiving and detecting a direct-current offset component in the output signal so as to obtain quantization information. The control logic unit is coupled to the 1-bit quantizer for sequentially setting one of a plurality of bits of a compensation value and updating the set bit according to the quantization information. The digital-to-analog converter is coupled to the control logic unit for compensating the direct-current offset component in the signal output from the signal processing unit according to the compensation value.
摘要翻译： 提供了用于校准从信号处理单元输出的信号中的直流偏移的电路和方法。 校准电路包括1位量化器，控制逻辑单元和数模转换器。 1位量化器耦合到信号处理单元的输出端，用于接收和检测输出信号中的直流偏移分量，以获得量化信息。 控制逻辑单元耦合到1位量化器，用于顺序地设置补偿值的多个位中的一个，并根据量化信息更新置位。 数模转换器耦合到控制逻辑单元，用于根据补偿值补偿从信号处理单元输出的信号中的直流偏移分量。
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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：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：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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