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1. 发明申请

US20110156764A1 METHOD FOR CALIBRATING AND CONTROLLING SIGNAL SLEW RATE, AND OUTPUT STAGE USING THE SAME 有权
标题翻译：用于校准和控制信号频率的方法，以及使用该信号的输出阶段
公开(公告)号：US20110156764A1
公开(公告)日：2011-06-30
申请号：US12971617
申请日：2010-12-17
申请人： Kai-Cheung JUANG , Hsin-Hong HOU , Yung-Pin LEE
发明人： Kai-Cheung JUANG , Hsin-Hong HOU , Yung-Pin LEE
IPC分类号： H03K3/00
CPC分类号： H03K19/00361 , H03K19/018521 , H04L25/0264
摘要： An output stage configured to control a driving voltage thereof is provided. The output stage includes: a first switching current module, coupled to a node for outputting a first current; a second switching current module, coupled to the node for outputting a second current; a switching capacitor module with a capacitance, coupled to the node; a calibrating control circuit, for calibrating the first current, the second current and the capacitance; a time constant calibrating circuit, for generating a reference slew rate, and controlling the calibrating control circuit to selectively calibrate the first current, the second current and the capacitance, such that a ratio of the first current and the capacitance and the ratio of the second current and the capacitance conform to the reference slew rate; and a voltage clamper for setting a high/low voltage range and limiting a amplitude of the driving voltage within the high/low voltage range.
摘要翻译：提供了用于控制其驱动电压的输出级。输出级包括：耦合到节点的第一开关电流模块，用于输出第一电流; 第二开关电流模块，耦合到所述节点，用于输出第二电流; 具有耦合到所述节点的电容的开关电容器模块; 校准控制电路，用于校准第一电流，第二电流和电容; 时间常数校准电路，用于产生参考转换速率，以及控制所述校准控制电路选择性地校准所述第一电流，所述第二电流和所述电容，使得所述第一电流和所述电容的比率以及所述第二电流电流和电容符合参考压摆率; 以及用于设定高/低电压范围并将驱动电压的幅度限制在高/低电压范围内的电压钳位器。

2. 发明申请

US20090167577A1 CIRCUIT AND METHOD FOR CALIBRATING DIRECT CURRENT OFFSET 有权
标题翻译：用于校准直流电流偏差的电路和方法
公开(公告)号：US20090167577A1
公开(公告)日：2009-07-02
申请号：US12124174
申请日：2008-05-21
申请人： Kai-Cheung Juang , Wei-Hsien Chen , Horng-Yuan Shih
发明人： Kai-Cheung Juang , Wei-Hsien Chen , Horng-Yuan Shih
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。

3. 发明授权

US08441313B2 Current-mode analog baseband apparatus 有权
公开(公告)号：US08441313B2
公开(公告)日：2013-05-14
申请号：US13530126
申请日：2012-06-22
申请人： Horng-Yuan Shih , Kai-Cheung Juang , Wei-Hsien Chen
发明人： Horng-Yuan Shih , Kai-Cheung Juang , Wei-Hsien Chen
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.

4. 发明申请

US20120262228A1 CURRENT-MODE ANALOG BASEBAND APPARATUS 有权
标题翻译：电流模式基带设备
公开(公告)号：US20120262228A1
公开(公告)日：2012-10-18
申请号：US13530126
申请日：2012-06-22
申请人： Horng-Yuan Shih , Kai-Cheung Juang , Wei-Hsien Chen , Huan-Ke Chiu
发明人： Horng-Yuan Shih , Kai-Cheung Juang , Wei-Hsien Chen , Huan-Ke Chiu
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。

5. 发明申请

US20120019323A1 CURRENT-MODE AMPLIFIER 有权
公开(公告)号：US20120019323A1
公开(公告)日：2012-01-26
申请号：US12855713
申请日：2010-08-13
申请人： Horng-Yuan Shih , Wei-Hsien Chen , Kai-Cheung Juang
发明人： Horng-Yuan Shih , Wei-Hsien Chen , Kai-Cheung Juang
IPC分类号： H03F3/45 , H03F3/04
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.

6. 发明申请

US20120019314A1 CURRENT-MODE ANALOG BASEBAND APPARATUS 有权
公开(公告)号：US20120019314A1
公开(公告)日：2012-01-26
申请号：US12855716
申请日：2010-08-13
申请人： Horng-Yuan Shih , Kai-Cheung Juang , Wei-Hsien Chen , Huan-Ke Chiu
发明人： Horng-Yuan Shih , Kai-Cheung Juang , Wei-Hsien Chen , Huan-Ke Chiu
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.

7. 发明授权

US07751504B2 Frequency modulation-frequency shift keying demodulator 有权
标题翻译：频率调频 - 频移键控解调器
公开(公告)号：US07751504B2
公开(公告)日：2010-07-06
申请号：US11476736
申请日：2006-06-29
申请人： Kai-Cheung Juang
发明人： Kai-Cheung Juang
IPC分类号： H03D3/00 , H04L27/14
CPC分类号： H04L27/142
摘要： A frequency modulation-frequency shift keying (FM/FSK) demodulator is provided, including a modulation signal input terminal for receiving a first modulation signal; a phase shifter for receiving the first modulation signal and then shifting its phase to output a second modulation signal; a multiplier connected to the modulation signal input terminal and the output of the phase shifter for multiplying the first modulation signal and the second modulation signal together to output a demodulation signal; an adder having at least two input terminals and an output terminal where the first input terminal receives the demodulation signal; a direct current (DC) compensation unit connected to the output terminal of the adder for compensating the DC of the demodulation signal and low-frequency offsets, and a demodulation signal output terminal connected to the output of the adder for outputting the demodulation signal.
摘要翻译：提供了一种频率调制 - 频移键控（FM / FSK）解调器，包括用于接收第一调制信号的调制信号输入端; 移相器，用于接收第一调制信号，然后移相以输出第二调制信号; 连接到调制信号输入端的乘法器和用于将第一调制信号和第二调制信号相乘的移相器的输出一起输出解调信号; 具有至少两个输入端的加法器和第一输入端接收解调信号的输出端; 连接到加法器的输出端的直流（DC）补偿单元，用于补偿解调信号的DC和低频偏移;以及解调信号输出端，连接到加法器的输出端，用于输出解调信号。

8. 发明授权

US07627443B2 Calibration apparatus and method for programmable response frequency selecting elements 有权
标题翻译：可编程响应频率选择元件的校准装置和方法
公开(公告)号：US07627443B2
公开(公告)日：2009-12-01
申请号：US11761365
申请日：2007-06-11
申请人： Kai-Cheung Juang
发明人： Kai-Cheung Juang
IPC分类号： G01R19/00
CPC分类号： H04B17/21 , H03J2200/10
摘要： Disclosed is a calibration apparatus and method for programmable response frequency selecting elements. The calibration apparatus comprises a basic reference source, a programmable counter, a control logic unit, and a frequency to time constant converter. The programmable counter generates plural different frequency signals required by the frequency selecting elements with different frequency responses. The frequency to time constant converter determines a calibrated capacitance through the timing control signals generated by the control logic unit. This invention makes the process, temperature, and power supply variation for frequency selecting elements free. It allows the frequency selecting elements to have a high accurate, stable, and wide range programming of frequency responses. It is suitable for multi-standard applications. It greatly reduces the chip size, and significantly lowers down the cost for the applications.
摘要翻译：公开了一种用于可编程响应频率选择元件的校准装置和方法。校准装置包括基本参考源，可编程计数器，控制逻辑单元和频率与时间常数转换器。可编程计数器产生具有不同频率响应的频率选择元件所需的多个不同频率信号。频率到时间常数转换器通过由控制逻辑单元产生的定时控制信号来确定经校准的电容。本发明使频率选择元件的工艺，温度和电源变化自由。它允许频率选择元件具有高精度，稳定和宽范围的频率响应编程。适用于多标准应用。它大大降低了芯片尺寸，并显着降低了应用的成本。

9. 发明申请

US20070133790A1 RANDOM NUMBER GENERATOR AND METHOD FOR GENERATING RANDOM NUMBER 审中-公开
标题翻译：随机数发生器和产生随机数的方法
公开(公告)号：US20070133790A1
公开(公告)日：2007-06-14
申请号：US11426793
申请日：2006-06-27
申请人： Shao-Chang CHANG , Kai-Cheung JUANG , Wen-Yuan LIU
发明人： Shao-Chang CHANG , Kai-Cheung JUANG , Wen-Yuan LIU
IPC分类号： H04L9/00
CPC分类号： G06F7/588
摘要： A random number circuit includes an oscillator capable of generating a clock signal including a sequence of clocks at a center frequency, the clock signal having a frequency offset from the center frequency, a reset circuitry capable of generating a reset signal indicating a transition from a first state to a second state, an initial value generator capable of generating an initial value, and a counter coupled to at least one of the oscillator, the reset circuitry, and the initial value generator and capable of receiving at least one of the clock signal, the reset signal, and the initial value, the counter capable of generating a random number, the random number being dependent on at least one of the frequency offset, a timing of the transition, and the initial value.
摘要翻译：随机数电路包括：振荡器，其能够产生包括中心频率的时钟序列的时钟信号，所述时钟信号具有与所述中心频率偏移的时钟信号;复位电路，能够产生指示从第一状态到第二状态，能够产生初始值的初始值发生器和耦合到振荡器，复位电路和初始值发生器中的至少一个的计数器，并且能够接收时钟信号中的至少一个，所述复位信号和所述初始值，所述计数器能够产生随机数，所述随机数依赖于所述频率偏移，所述转移的定时和所述初始值中的至少一个。

10. 发明申请

US20060158271A1 Voltage controlled oscillator with anti supply voltage variation and/or process variation 失效
标题翻译：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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