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1. 发明申请

US20060164168A1 Power amplifier circuit and method thereof 有权
标题翻译：功率放大器电路及其方法
公开(公告)号：US20060164168A1
公开(公告)日：2006-07-27
申请号：US11336261
申请日：2006-01-19
申请人： Jung-Chang Liu , Che-Hung Liao , Sen-You Liu , Did-Min Shih
发明人： Jung-Chang Liu , Che-Hung Liao , Sen-You Liu , Did-Min Shih
IPC分类号： H03F3/04
CPC分类号： H03F3/189 , H03F3/72
摘要： A power amplifier circuit amplifying an input signal to an output signal and a method thereof. The power amplifier circuit comprises a ramp controller, a current source, and a first amplification stage. The ramp controller receives an enable signal to generate a ramp signal. The current source is coupled to the ramp controller, produces a ramp current by the ramp signal. The first amplification stage is coupled to the current source, comprises a first supply voltage input coupled to a fixed supply voltage, and is biased by the ramp current to amplify the input signal such that an envelope of the output signal is a ramp.
摘要翻译：将输入信号放大为输出信号的功率放大器电路及其方法。功率放大器电路包括斜坡控制器，电流源和第一放大级。斜坡控制器接收使能信号以产生斜坡信号。电流源耦合到斜坡控制器，通过斜坡信号产生斜坡电流。第一放大级耦合到电流源，包括耦合到固定电源电压的第一电源电压输入，并被斜坡电流偏置以放大输入信号，使得输出信号的包络是斜坡。

2. 发明授权

US07362179B2 Power amplifier circuit and method thereof 有权
标题翻译：功率放大器电路及其方法
公开(公告)号：US07362179B2
公开(公告)日：2008-04-22
申请号：US11336261
申请日：2006-01-19
申请人： Jung-Chang Liu , Che-Hung Liao , Sen-You Liu , Did-Min Shih
发明人： Jung-Chang Liu , Che-Hung Liao , Sen-You Liu , Did-Min Shih
IPC分类号： H03F3/04
CPC分类号： H03F3/189 , H03F3/72
摘要： A power amplifier circuit amplifying an input signal to an output signal and a method thereof. The power amplifier circuit comprises a ramp controller, a current source, and a first amplification stage. The ramp controller receives an enable signal to generate a ramp signal. The current source is coupled to the ramp controller, produces a ramp current by the ramp signal. The first amplification stage is coupled to the current source, comprises a first supply voltage input coupled to a fixed supply voltage, and is biased by the ramp current to amplify the input signal such that an envelope of the output signal is a ramp.
摘要翻译：放大输入信号到输出信号的功率放大器电路及其方法。功率放大器电路包括斜坡控制器，电流源和第一放大级。斜坡控制器接收使能信号以产生斜坡信号。电流源耦合到斜坡控制器，通过斜坡信号产生斜坡电流。第一放大级耦合到电流源，包括耦合到固定电源电压的第一电源电压输入，并被斜坡电流偏置以放大输入信号，使得输出信号的包络是斜坡。

3. 发明申请

US20070242775A1 HARMONIC-REJECTION MODULATION DEVICE 有权
标题翻译：谐波抑制调制装置
公开(公告)号：US20070242775A1
公开(公告)日：2007-10-18
申请号：US11611256
申请日：2006-12-15
申请人： Nean-Chu Cheng , Ying-Che Tseng , Sen-You Liu , Did-Min Shih
发明人： Nean-Chu Cheng , Ying-Che Tseng , Sen-You Liu , Did-Min Shih
IPC分类号： H04L27/20
CPC分类号： H04L27/20 , H03B27/00 , H03D7/165 , H03D2200/0086 , H04L27/2057 , H04L27/206
摘要： A harmonic-rejection modulation device is provided, which includes a phase splitter, a low pass filter, and a modulator. Based on a square wave, the phase splitter generates a plurality of unfiltered local oscillating signals having phase angles of 0°, 30°, 90°, 120°, 180°, 210°, 270° and 300°, respectively. The low pass filter filters the high frequency components of the unfiltered local oscillating signals to generate a plurality of local oscillating signals having phase angles of 0°, 30°, 90°, 120°, 180°, 210°, 270° and 300°, respectively. The modulator modulates a baseband signal with the local oscillating signals, wherein the third harmonics of the local oscillating signals are eliminated by the modulation process of the modulator. The invention also provides a method of modulating a baseband signal.
摘要翻译：提供了一种谐波抑制调制装置，其包括相分离器，低通滤波器和调制器。基于方波，分相器分别产生具有0°，30°，90°，120°，180°，210°，270°和300°的相位角的多个未滤波的本地振荡信号。低通滤波器对未滤波的本地振荡信号的高频分量进行滤波，以产生具有0°，30°，90°，120°，180°，210°，270°和300°的相位角的多个本地振荡信号，分别。调制器用本地振荡信号调制基带信号，其中通过调制器的调制过程消除本地振荡信号的三次谐波。本发明还提供一种调制基带信号的方法。

4. 发明授权

US07518459B2 Harmonic-rejection modulation device 有权
标题翻译：谐波抑制调制装置
公开(公告)号：US07518459B2
公开(公告)日：2009-04-14
申请号：US11611256
申请日：2006-12-15
申请人： Nean-Chu Cheng , Ying-Che Tseng , Sen-You Liu , Did-Min Shih
发明人： Nean-Chu Cheng , Ying-Che Tseng , Sen-You Liu , Did-Min Shih
IPC分类号： H04L27/20
CPC分类号： H04L27/20 , H03B27/00 , H03D7/165 , H03D2200/0086 , H04L27/2057 , H04L27/206
摘要： A harmonic-rejection modulation device is provided, which includes a phase splitter, a low pass filter, and a modulator. Based on a square wave, the phase splitter generates a plurality of unfiltered local oscillating signals having phase angles of 0°, 30°, 90°, 120°, 180°, 210°, 270° and 300°, respectively. The low pass filter filters the high frequency components of the unfiltered local oscillating signals to generate a plurality of local oscillating signals having phase angles of 0°, 30°, 90°, 120°, 180°, 210°, 270° and 300°, respectively. The modulator modulates a baseband signal with the local oscillating signals, wherein the third harmonics of the local oscillating signals are eliminated by the modulation process of the modulator. The invention also provides a method of modulating a baseband signal.
摘要翻译：提供了一种谐波抑制调制装置，其包括相分离器，低通滤波器和调制器。基于方波，分相器分别产生具有0°，30°，90°，120°，180°，210°，270°和300°的相位角的多个未滤波的本地振荡信号。低通滤波器对未滤波的本地振荡信号的高频分量进行滤波，以产生具有0°，30°，90°，120°，180°，210°，270°和300°的相位角的多个本地振荡信号，分别。调制器用本地振荡信号调制基带信号，其中通过调制器的调制过程消除本地振荡信号的三次谐波。本发明还提供一种调制基带信号的方法。

5. 发明授权

US07492852B1 Fractional frequency divider 有权
标题翻译：分数分频器
公开(公告)号：US07492852B1
公开(公告)日：2009-02-17
申请号：US11868496
申请日：2007-10-07
申请人： Sen-You Liu
发明人： Sen-You Liu
IPC分类号： H03K21/00
CPC分类号： H03K23/68 , H03K23/667
摘要： A divide-by-N/(N+0.5) frequency divider is disclosed. Two pairs of flip-flops are respectively triggered by an input clock and an inverted input clock, and a frequency-dividing selector is used to select one output of the two pairs of flip-flops as frequency-divided output signal. Two latches are respectively triggered by the input clock and the inverted input clock, and a modulus selector is used to select one output of the two latches. A modulus logic circuit determines being in either N frequency-dividing mode or (N+0.5) frequency-dividing mode based on a modulus control signal. A frequency-dividing logic circuit receives output of the modulus logic circuit and an inverted frequency-divided output signal to swallow half the input clock per output cycle in the (N+0.5) frequency-dividing mode, therefore obtaining division resolution of half the input clock.
摘要翻译：公开了N /（N + 0.5）分频器。两对触发器分别由输入时钟和反相输入时钟触发，并且分频选择器用于选择两对触发器的一个输出作为分频输出信号。两个锁存器分别由输入时钟和反相输入时钟触发，并且使用模数选择器来选择两个锁存器的一个输出。模数逻辑电路基于模数控制信号确定处于N分频模式或（N + 0.5）分频模式。分频逻辑电路接收模数逻辑电路的输出和反相分频输出信号，以在（N + 0.5）分频模式中吞吐输入时钟的一半输入周期，从而获得输入的一半的分频分辨率时钟。

6. 发明授权

US07444122B2 Communications system with variable load and related method 有权
标题翻译：具有可变负载和相关方法的通信系统
公开(公告)号：US07444122B2
公开(公告)日：2008-10-28
申请号：US11669161
申请日：2007-01-31
申请人： Pi-An Wu , Sen-You Liu
发明人： Pi-An Wu , Sen-You Liu
IPC分类号： H04B1/04
CPC分类号： H03L7/18 , H03C3/225
摘要： A mobile system has a frequency synthesizer and an amplifier module coupled to the frequency synthesizer. The frequency synthesizer is controlled by frequency division data to generate a tuning signal with a frequency corresponding to a reference signal and the frequency division data. The mobile system provides an input signal based on the frequency of the tuning signal having a frequency spectrum corresponding to the frequency of the tuning signal. The amplifier module has a variable load circuit for providing an equivalent impedance, an amplifier circuit coupled to the variable load circuit for establishing an output signal corresponding to the input signal and the equivalent impedance of the variable load circuit, and a mapping circuit for modifying the equivalent impedance of the variable load circuit based on the frequency division data.
摘要翻译：移动系统具有耦合到频率合成器的频率合成器和放大器模块。频率合成器由分频数据控制，以产生具有对应于参考信号和分频数据的频率的调谐信号。移动系统基于具有与调谐信号的频率对应的频谱的调谐信号的频率来提供输入信号。放大器模块具有用于提供等效阻抗的可变负载电路，耦合到可变负载电路的放大器电路，用于建立对应于可变负载电路的输入信号和等效阻抗的输出信号，以及映射电路，用于修改基于分频数据的可变负载电路的等效阻抗。

7. 发明授权

US07388408B2 Phase-frequency detector capable of reducing dead zone 有权
标题翻译：相位检测器能够减少死区
公开(公告)号：US07388408B2
公开(公告)日：2008-06-17
申请号：US11616031
申请日：2006-12-26
申请人： Sen-You Liu , Pi-An Wu
发明人： Sen-You Liu , Pi-An Wu
IPC分类号： H03D13/00
CPC分类号： H03L7/0891 , H03D13/004
摘要： A phase-frequency detector generates output signals at a first and a second output end based on input signals received at a first and a second input end. The phase-frequency detector includes two latch circuits, two pulse generators, two inverting circuits, two sensing devices, and a reset control circuit. The sensing devices control the pulse generators based on signals received at corresponding first ends of the sensing devices. The inverting circuits generate signals to the first and second output ends of the phase-frequency detector based on signals received at corresponding first ends of the inverting circuits. The reset control circuit generates reset signals based on signals received at the first and second output ends of the phase-frequency detector.
摘要翻译：相位频率检测器基于在第一和第二输入端接收的输入信号在第一和第二输出端产生输出信号。相位频率检测器包括两个锁存电路，两个脉冲发生器，两个反相电路，两个感测装置和复位控制电路。感测装置基于在感测装置的相应第一端处接收的信号来控制脉冲发生器。反相电路基于在反相电路的相应第一端处接收到的信号，向相位 - 频率检测器的第一和第二输出端产生信号。复位控制电路根据在相位频率检测器的第一和第二输出端接收到的信号产生复位信号。

8. 发明申请

US20080012648A1 COMMUNICATIONS SYSTEM WITH VARIABLE LOAD AND RELATED METHOD 有权
标题翻译：具有可变负载的通信系统及相关方法
公开(公告)号：US20080012648A1
公开(公告)日：2008-01-17
申请号：US11669161
申请日：2007-01-31
申请人： Pi-An Wu , Sen-You Liu
发明人： Pi-An Wu , Sen-You Liu
IPC分类号： H03L7/00
CPC分类号： H03L7/18 , H03C3/225
摘要： A mobile system has a frequency synthesizer and an amplifier module coupled to the frequency synthesizer. The frequency synthesizer is controlled by frequency division data to generate a tuning signal with a frequency corresponding to a reference signal and the frequency division data. The mobile system provides an input signal based on the frequency of the tuning signal having a frequency spectrum corresponding to the frequency of the tuning signal. The amplifier module has a variable load circuit for providing an equivalent impedance, an amplifier circuit coupled to the variable load circuit for establishing an output signal corresponding to the input signal and the equivalent impedance of the variable load circuit, and a mapping circuit for modifying the equivalent impedance of the variable load circuit based on the frequency division data.
摘要翻译：移动系统具有耦合到频率合成器的频率合成器和放大器模块。频率合成器由分频数据控制，以产生具有对应于参考信号和分频数据的频率的调谐信号。移动系统基于具有与调谐信号的频率对应的频谱的调谐信号的频率来提供输入信号。放大器模块具有用于提供等效阻抗的可变负载电路，耦合到可变负载电路的放大器电路，用于建立对应于可变负载电路的输入信号和等效阻抗的输出信号，以及映射电路，用于修改基于分频数据的可变负载电路的等效阻抗。

9. 发明申请

US20070268050A1 PHASE-FREQUENCY DETECTOR CAPABLE OF REDUCING DEAD ZONE 有权
标题翻译：相位检测器可以减少死区
公开(公告)号：US20070268050A1
公开(公告)日：2007-11-22
申请号：US11616031
申请日：2006-12-26
申请人： Sen-You Liu , Pi-An Wu
发明人： Sen-You Liu , Pi-An Wu
IPC分类号： H03L7/06
CPC分类号： H03L7/0891 , H03D13/004
摘要： A phase-frequency detector generates output signals at a first and a second output end based on input signals received at a first and a second input end. The phase-frequency detector includes two latch circuits, two pulse generators, two inverting circuits, two sensing devices, and a reset control circuit. The sensing devices control the pulse generators based on signals received at corresponding first ends of the sensing devices. The inverting circuits generate signals to the first and second output ends of the phase-frequency detector based on signals received at corresponding first ends of the inverting circuits. The reset control circuit generates reset signals based on signals received at the first and second output ends of the phase-frequency detector.
摘要翻译：相位频率检测器基于在第一和第二输入端接收的输入信号在第一和第二输出端产生输出信号。相位频率检测器包括两个锁存电路，两个脉冲发生器，两个反相电路，两个感测装置和复位控制电路。感测装置基于在感测装置的相应第一端处接收的信号来控制脉冲发生器。反相电路基于在反相电路的相应第一端处接收到的信号，向相位 - 频率检测器的第一和第二输出端产生信号。复位控制电路根据在相位频率检测器的第一和第二输出端接收到的信号产生复位信号。

10. 发明申请

US20060148421A1 Method and apparatus for frequency adjustment 审中-公开
标题翻译：用于频率调节的方法和装置
公开(公告)号：US20060148421A1
公开(公告)日：2006-07-06
申请号：US11027984
申请日：2005-01-04
申请人： Patrick Huang , Wen-Chang Lee , Sen-You Liu
发明人： Patrick Huang , Wen-Chang Lee , Sen-You Liu
IPC分类号： H04B1/40
CPC分类号： H04B1/40 , H03J7/065 , H03J2200/10
摘要： A method and an apparatus for shifting a resonance frequency in response to an operating frequency are provided. The present invention retrieves a control signal, from a frequency synthesizer, indicative of a difference between the operating frequency and a predetermined frequency, decodes the control signal to generate a tuning signal by looking up a mapping table, and tunes the resonance frequency in response to the tuning signal.
摘要翻译：提供了一种用于响应于工作频率移动谐振频率的方法和装置。本发明从频率合成器检索指示操作频率和预定频率之间的差异的控制信号，通过查找映射表来解码控制信号以产生调谐信号，并且响应于调谐信号。

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