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1. 发明授权

US07424271B2 Multi-mode and multi-band RF transceiver and related communications method 有权
标题翻译：多模和多频RF收发器及相关通讯方式
公开(公告)号：US07424271B2
公开(公告)日：2008-09-09
申请号：US10904895
申请日：2004-12-02
申请人： Did-Min Shih , Jyh-Fong Lin
发明人： Did-Min Shih , Jyh-Fong Lin
IPC分类号： H04B1/40
CPC分类号： H04B1/005 , H01Q1/242 , H04B1/406
摘要： A multimode communications system includes a first communications module, a transmission module, a switch and a second communications module. The first communication module has a frequency modulator for modulating a dividing ratio to adjust an oscillating signal and selectively enabling the oscillating signal to have its frequency change with a variety of contents of a first communications signal by modulating the dividing ratio according to the contents of the first communications signal on a modulating mode or enabling the oscillating signal to have its frequency constant by keeping the dividing ratio unchanged. The switch is to selectively transmit the oscillating signal either to the transmission module when the frequency modulator is operating on the modulating mode or to a receiving end when the frequency modulator is operating on the constant frequency mode.
摘要翻译：多模式通信系统包括第一通信模块，传输模块，交换机和第二通信模块。第一通信模块具有用于调制分频比以调整振荡信号的频率调制器，并且通过根据第一通信模块的内容调制分频比来选择性地使得振荡信号能够利用第一通信信号的各种内容来改变其频率第一通信信号处于调制模式，或者使振荡信号通过保持分频比不变而使其频率恒定。当频率调制器在调制模式下工作时，该开关用于选择性地将振荡信号发送到传输模块，或者当频率调制器在恒定频率模式下工作时，将该振荡信号选择性地发送到传输模块。

2. 发明申请

US20080125060A1 Radio Frequency Transceiver 审中-公开
标题翻译：射频收发器
公开(公告)号：US20080125060A1
公开(公告)日：2008-05-29
申请号：US11428597
申请日：2006-07-05
申请人： Jyh-Fong Lin , Jung-Chang Liu , Peir-Weir Chen , Ying-Che Tseng , Did-Min Shih
发明人： Jyh-Fong Lin , Jung-Chang Liu , Peir-Weir Chen , Ying-Che Tseng , Did-Min Shih
IPC分类号： H04B1/00
CPC分类号： H04B1/0082
摘要： A wireless communication device. The wireless communication device comprises first and second programmable frequency dividers, a mixer, a modulator, a phase detector, and a variable controlled oscillator. The first programmable frequency divider divides the frequency of a reference signal by a factor N to generate a modulating signal. The second programmable frequency divider divides the reference signal by a factor M and outputs a frequency-divided signal. The facts N and M are positive integers. The mixer down-converting a transmission signal according the divided signal and outputs a translation-loop signal. The modulator modulates the modulating signal with baseband signals, and outputs a comparison signal. The phase detector detects a phase difference between the comparison signal and the translation-loop signal. The variable controlled oscillator modifies the transmission signals according to an output of the phase detector.
摘要翻译：无线通信设备。无线通信设备包括第一和第二可编程分频器，混频器，调制器，相位检测器和可变控制振荡器。第一可编程分频器将参考信号的频率除以因子N以产生调制信号。第二可编程分频器将参考信号除以因子M并输出分频信号。事实N和M是正整数。混频器根据分频信号对传输信号进行下变频转换，并输出平移环路信号。调制器用基带信号调制调制信号，并输出比较信号。相位检测器检测比较信号和平移环路信号之间的相位差。可变控制振荡器根据相位检测器的输出修改发送信号。

3. 发明申请

US20050124377A1 MULTI-MODE AND MULTI-BAND RF TRANSCEIVER AND RELATED COMMUNICATIONS METHOD 有权
标题翻译：多模和多频RF收发器及相关通信方法
公开(公告)号：US20050124377A1
公开(公告)日：2005-06-09
申请号：US10904895
申请日：2004-12-02
申请人： Did-Min Shih , Jyh-Fong Lin
发明人： Did-Min Shih , Jyh-Fong Lin
IPC分类号： H01Q1/24 , H04B1/40 , H04B1/04 , H01Q11/12 , H04B1/26
CPC分类号： H04B1/005 , H01Q1/242 , H04B1/406
摘要： A multimode communications system includes a first communications module, a transmission module, a switch and a second communications module. The first communication module has a frequency modulator for modulating a dividing ratio to adjust an oscillating signal and selectively enabling the oscillating signal to have its frequency change with a variety of contents of a first communications signal by modulating the dividing ratio according to the contents of the first communications signal on a modulating mode or enabling the oscillating signal to have its frequency constant by keeping the dividing ratio unchanged. The switch is to selectively transmit the oscillating signal either to the transmission module when the frequency modulator is operating on the modulating mode or to a receiving end when the frequency modulator is operating on the constant frequency mode.
摘要翻译：多模式通信系统包括第一通信模块，传输模块，交换机和第二通信模块。第一通信模块具有用于调制分频比以调整振荡信号的频率调制器，并且通过根据第一通信模块的内容调制分频比来选择性地使得振荡信号能够利用第一通信信号的各种内容来改变其频率第一通信信号处于调制模式，或者使振荡信号通过保持分频比不变而使其频率恒定。当频率调制器在调制模式下工作时，该开关用于选择性地将振荡信号发送到传输模块，或者当频率调制器在恒定频率模式下工作时，将该振荡信号选择性地发送到传输模块。

4. 发明授权

US07088999B2 Personal communication device with transmitted RF power strength indicator 有权
标题翻译：具有发射功率强度指示器的个人通信设备
公开(公告)号：US07088999B2
公开(公告)日：2006-08-08
申请号：US10726510
申请日：2003-12-04
申请人： Did-Min Shih , Chun-Chieh Chen , Bing-Ming Ho
发明人： Did-Min Shih , Chun-Chieh Chen , Bing-Ming Ho
IPC分类号： H04Q7/20
CPC分类号： H04W52/10 , H04B1/3838 , H04B2001/3844 , H04W52/52
摘要： A radio communication system for communication between a first mobile system and a second mobile system. Each mobile system has a transceiver for receiving and emitting radio signal. The second mobile system comprises a received signal strength detecting device, a power controller and an indicating device. The received signal strength detecting device detects a received signal strength of the transceiver in the second mobile system. The power controller outputs a transmitted power strength status and controls transmitted power of the transceiver according to the received signal strength. The indicating device receives the transmitted power strength status and indicates a transmitted RF power strength status of the transceiver in the second mobile.
摘要翻译：一种用于在第一移动系统和第二移动系统之间进行通信的无线电通信系统。每个移动系统具有用于接收和发射无线电信号的收发器。第二移动系统包括接收信号强度检测装置，功率控制器和指示装置。接收信号强度检测装置检测第二移动系统中收发信机的接收信号强度。功率控制器输出发射功率强度状态，并根据接收到的信号强度控制收发器的发射功率。指示装置接收发送的功率强度状态，并指示第二移动台中的收发机的发射的RF功率强度状态。

5. 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。

6. 发明授权

US07058371B2 Mechanism for modulating wireless communication signals 有权
标题翻译：调制无线通信信号的机制
公开(公告)号：US07058371B2
公开(公告)日：2006-06-06
申请号：US10387820
申请日：2003-03-12
申请人： Shaolin Li , Did-Min Shih
发明人： Shaolin Li , Did-Min Shih
IPC分类号： H04B1/04
CPC分类号： H04L27/367
摘要： A modulating mechanism is provided comprising a first storage and a corresponding first DAC, and a second storage and a corresponding second DAC. The first storage stores an adjusted digital representation of a first waveform, while the second storage stores an adjusted digital representation of a second waveform. The adjusted representation of the first waveform is adjusted to compensate for the deviation effects experienced by the first DAC (e.g. amplitude deviation, DC offset, non-linearity, etc.). The adjusted representation of the second waveform is adjusted to compensate for the deviation effects experienced by the second DAC. In effect, the adjusted representations of the first and second waveforms cause the DAC's to exhibit the proper behavior, despite the presence of the deviation effects. By storing and using adjusted digital representations of waveforms in this manner, many benefits can be realized, including for example, eliminating the need for any analog compensation circuits.
摘要翻译：提供了包括第一存储器和对应的第一DAC以及第二存储器和对应的第二DAC的调制机制。第一存储器存储第一波形的经调整的数字表示，而第二存储器存储第二波形的经调整的数字表示。调整第一波形的经调整的表示以补偿第一DAC所经历的偏差影响（例如振幅偏差，DC偏移，非线性等）。调整第二波形的调整后的表示以补偿第二DAC所经历的偏差影响。实际上，尽管存在偏差效应，但是第一和第二波形的经调整的表示使得DAC具有适当的行为。通过以这种方式存储和使用调整后的波形数字表示，可以实现许多益处，例如，不需要任何模拟补偿电路。

7. 发明授权

US07639084B2 Power amplifier with nonlinear compensation, and method thereof 有权
标题翻译：具有非线性补偿功率放大器及其方法
公开(公告)号：US07639084B2
公开(公告)日：2009-12-29
申请号：US11609056
申请日：2006-12-11
申请人： Che-Hung Liao , Jung-Chang Liu , Ying-Che Tseng , Did-Min Shih
发明人： Che-Hung Liao , Jung-Chang Liu , Ying-Che Tseng , Did-Min Shih
IPC分类号： H03F3/04
CPC分类号： H03F1/083 , H03F1/3205 , H03F3/191 , H03F2200/181 , H03F2200/492
摘要： A power amplifier amplifying an input signal is provided, comprising a power amplifier circuit, a bias circuit, and a compensation circuit. The power amplifier circuit has an input impedance responsive to the input signal, and amplifies the input signal to generate an output signal. The bias circuit is coupled to the power amplifier circuit, generates a DC bias signal to the power amplifier so that the power amplifier amplifies the input signal. The compensation circuit is coupled to the power amplifier circuit, provides a compensation impedance responsive to the input signal such that a combination of the input impedance and the compensation impedance is substantially constant regardless of the input signal.
摘要翻译：提供放大输入信号的功率放大器，包括功率放大器电路，偏置电路和补偿电路。功率放大器电路具有响应于输入信号的输入阻抗，并放大输入信号以产生输出信号。偏置电路耦合到功率放大器电路，产生到功率放大器的直流偏置信号，使功率放大器放大输入信号。补偿电路耦合到功率放大器电路，提供响应于输入信号的补偿阻抗，使得输入阻抗和补偿阻抗的组合基本上恒定，而与输入信号无关。

8. 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。

9. 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。

10. 发明申请

US20080136529A1 POWER AMPLIFIER WITH NONLINEAR COMPENSATION, AND METHOD THEREOF 有权
标题翻译：具有非线性补偿的功率放大器及其方法
公开(公告)号：US20080136529A1
公开(公告)日：2008-06-12
申请号：US11609056
申请日：2006-12-11
申请人： Che-Hung Liao , Jung-Chang Liu , Ying-Che Tseng , Did-Min Shih
发明人： Che-Hung Liao , Jung-Chang Liu , Ying-Che Tseng , Did-Min Shih
IPC分类号： H03F3/191
CPC分类号： H03F1/083 , H03F1/3205 , H03F3/191 , H03F2200/181 , H03F2200/492
摘要： A power amplifier amplifying an input signal is provided, comprising a power amplifier circuit, a bias circuit, and a compensation circuit. The power amplifier circuit has an input impedance responsive to the input signal, and amplifies the input signal to generate an output signal. The bias circuit is coupled to the power amplifier circuit, generates a DC bias signal to the power amplifier so that the power amplifier amplifies the input signal. The compensation circuit is coupled to the power amplifier circuit, provides a compensation impedance responsive to the input signal such that a combination of the input impedance and the compensation impedance is substantially constant regardless of the input signal.
摘要翻译：提供放大输入信号的功率放大器，包括功率放大器电路，偏置电路和补偿电路。功率放大器电路具有响应于输入信号的输入阻抗，并放大输入信号以产生输出信号。偏置电路耦合到功率放大器电路，产生到功率放大器的直流偏置信号，使功率放大器放大输入信号。补偿电路耦合到功率放大器电路，提供响应于输入信号的补偿阻抗，使得输入阻抗和补偿阻抗的组合基本上恒定，而与输入信号无关。

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