公开(公告)号：US07078972B2

公开(公告)日：2006-07-18

申请号：US10709197

申请日：2004-04-20

申请人： Ying-Yao Lin ,  Chao-Cheng Lee ,  Tung-Ming Su

发明人： Ying-Yao Lin ,  Chao-Cheng Lee ,  Tung-Ming Su

IPC分类号： H03F3/45

CPC分类号： H03F3/45085 ,  H03F2203/45566 ,  H03F2203/45702 ,  H03G1/0023 ,  H03G7/06

摘要： A linear decibel-scale variable gain amplifier includes an amplifying stage for generating an output voltage according to a differential input voltage, and a gain-controlling stage for outputting a gain-controlling voltage to the amplifying stage according to a first controlling voltage and a second controlling voltage. A voltage gain of the linear decibel-scale variable gain amplifier is inversely proportional to a simple exponential function, and the value of the simple exponential function is determined by the difference between the first controlling voltage and the second controlling voltage. The value of the voltage gain is unaffected by changes of the thermal voltage.

摘要翻译： 线性分贝尺度可变增益放大器包括用于根据差分输入电压产生输出电压的放大级，以及用于根据第一控制电压向放大级输出增益控制电压的增益控制级，第二 控制电压。 线性分贝尺度可变增益放大器的电压增益与简单的指数函数成反比，简单指数函数的值由第一控制电压和第二控制电压之间的差确定。 电压增益的值不受热电压变化的影响。

公开(公告)号：US07075368B2

公开(公告)日：2006-07-11

申请号：US10709198

申请日：2004-04-20

申请人： Ying-Yao Lin ,  Tung-Ming Su ,  Chao-Cheng Lee

发明人： Ying-Yao Lin ,  Tung-Ming Su ,  Chao-Cheng Lee

IPC分类号： H03F3/45

CPC分类号： H03G7/001 ,  H03F3/45085 ,  H03F2203/45652 ,  H03F2203/45702 ,  H03G1/0023 ,  H03G7/06

摘要： A variable gain amplifier having a linear decibel-scale gain comprises an amplifying stage for generating an output voltage according to a differential input voltage, and a gain-controlling stage for outputting a gain-controlling voltage to the amplifying stage according to a first controlling voltage and a second controlling voltage. A voltage gain of the variable gain amplifier is inversely proportional to a simple exponential function, and the value of the simple exponential function is determined by the difference between the first controlling voltage and the second controlling voltage.

摘要翻译： 具有线性分贝尺度增益的可变增益放大器包括用于根据差分输入电压产生输出电压的放大级，以及用于根据第一控制电压向放大级输出增益控制电压的增益控制级 和第二控制电压。 可变增益放大器的电压增益与简单的指数函数成反比，简单指数函数的值由第一控制电压和第二控制电压之间的差确定。

公开(公告)号：US20050017807A1

公开(公告)日：2005-01-27

申请号：US10708202

申请日：2004-02-16

申请人： Ying-Yao Lin ,  Tung-Ming Su

发明人： Ying-Yao Lin ,  Tung-Ming Su

IPC分类号： H03F3/45 ,  H03G1/00

CPC分类号： H03F3/45 ,  H03G1/0023

摘要： A linear-in-decibel variable gain amplifier used for receiving an input voltage and generating an output voltage according to a first controlling voltage and a second controlling voltage. A voltage gain, that is, the ratio between the output voltage and the input voltage, has a denominator that is a pure exponential function, and the value of the pure exponential function is determined by the first controlling voltage and second controlling voltage.

摘要翻译： 用于接收输入电压并根据第一控制电压和第二控制电压产生输出电压的线性分贝可变增益放大器。 电压增益，即输出电压与输入电压之比，具有纯指数函数的分母，纯指数函数的值由第一控制电压和第二控制电压决定。

公开(公告)号：US07091786B2

公开(公告)日：2006-08-15

申请号：US10708202

申请日：2004-02-16

申请人： Ying-Yao Lin ,  Tung-Ming Su

发明人： Ying-Yao Lin ,  Tung-Ming Su

IPC分类号： H03F3/45

CPC分类号： H03F3/45 ,  H03G1/0023

摘要： A linear-in-decibel variable gain amplifier used for receiving an input voltage and generating an output voltage according to a first controlling voltage and a second controlling voltage. A voltage gain, that is, the ratio between the output voltage and the input voltage, has a denominator that is a pure exponential function, and the value of the pure exponential function is determined by the first controlling voltage and second controlling voltage.

摘要翻译： 用于接收输入电压并根据第一控制电压和第二控制电压产生输出电压的线性分贝可变增益放大器。 电压增益，即输出电压与输入电压之比，具有纯指数函数的分母，纯指数函数的值由第一控制电压和第二控制电压决定。

公开(公告)号：US20050046479A1

公开(公告)日：2005-03-03

申请号：US10709198

申请日：2004-04-20

申请人： Ying-Yao Lin ,  Tung-Ming Su ,  Chao-Cheng Lee

发明人： Ying-Yao Lin ,  Tung-Ming Su ,  Chao-Cheng Lee

IPC分类号： H03F3/45 ,  H03G1/00 ,  H03G7/00 ,  H03G7/06

CPC分类号： H03G7/001 ,  H03F3/45085 ,  H03F2203/45652 ,  H03F2203/45702 ,  H03G1/0023 ,  H03G7/06

摘要： A variable gain amplifier having a linear decibel-scale gain comprises an amplifying stage for generating an output voltage according to a differential input voltage, and a gain-controlling stage for outputting a gain-controlling voltage to the amplifying stage according to a first controlling voltage and a second controlling voltage. A voltage gain of the variable gain amplifier is inversely proportional to a simple exponential function, and the value of the simple exponential function is determined by the difference between the first controlling voltage and the second controlling voltage.

摘要翻译： 具有线性分贝尺度增益的可变增益放大器包括用于根据差分输入电压产生输出电压的放大级，以及用于根据第一控制电压向放大级输出增益控制电压的增益控制级 和第二控制电压。 可变增益放大器的电压增益与简单的指数函数成反比，简单指数函数的值由第一控制电压和第二控制电压之间的差确定。

公开(公告)号：US20050001937A1

公开(公告)日：2005-01-06

申请号：US10708060

申请日：2004-02-06

申请人： Liang-Hui Lee ,  Dsun-Chie Twu ,  Tung-Ming Su

发明人： Liang-Hui Lee ,  Dsun-Chie Twu ,  Tung-Ming Su

IPC分类号： H03D7/16 ,  H04N5/50

CPC分类号： H03D7/165

摘要： A television (TV) tuner includes a first mixer for mixing a received RF signal with a first local oscillator signal to produce an intermediate frequency signal, a second mixer for mixing the intermediate frequency signal with a second local oscillator signal for producing an in-phase baseband output signal, a third mixer for mixing the intermediate frequency signal with a third local oscillator signal for producing a quadrature-phase baseband output signal, the third local oscillator signal being the second local oscillator signal phase delayed, and a single phase locked loop (PLL) coupled to the first mixer and the second mixer unit for generating the first local oscillator signal and the second local oscillator signal according to a selected channel in the received RF signal.

摘要翻译： 电视（TV）调谐器包括：第一混频器，用于将接收到的RF信号与第一本地振荡器信号混合以产生中频信号;第二混频器，用于将中频信号与第二本地振荡器信号混频以产生同相 基带输出信号，第三混频器，用于将中频信号与用于产生正交相位基带输出信号的第三本地振荡器信号混合，作为第二本地振荡器信号相位的第三本地振荡器信号被延迟，以及单个锁相环（ PLL），其耦合到第一混频器和第二混频器单元，用于根据所接收的RF信号中的选定信道产生第一本地振荡器信号和第二本机振荡器信号。

公开(公告)号：US07538615B2

公开(公告)日：2009-05-26

申请号：US11980708

申请日：2007-10-31

申请人： Tung-Ming Su ,  Chun Che Lin

发明人： Tung-Ming Su ,  Chun Che Lin

IPC分类号： H03F3/45

CPC分类号： H03F3/45179 ,  H03F1/3211 ,  H03F1/483 ,  H03F2200/36 ,  H03F2203/45018 ,  H03F2203/45134 ,  H03F2203/45288 ,  H03F2203/45296 ,  H03F2203/45318 ,  H03F2203/45528 ,  H03F2203/45722

摘要： The present invention relates to a differential feedback amplifier circuit with cross coupled capacitors. Wherein, the first and second input terminals of a source follower are respectively coupled to the first and second output terminals of a differential amplifier, and a resistor is respectively coupled between the first output terminal of the source follower and the first input terminal of the differential amplifier and between the second output terminal of the source follower and the second input terminal of the differential amplifier in order to form a feedback loop. In addition, a capacitor is respectively coupled between the first end current source gate of the source follower and the second input terminal of the source follower and between the second end current source gate of the source follower and the first input terminal of the source follower, so as to improve the circuit gain and bandwidth.

摘要翻译： 本发明涉及一种具有交叉耦合电容器的差分反馈放大器电路。 其中，源极跟随器的第一和第二输入端分别耦合到差分放大器的第一和第二输出端子，并且电阻器分别耦合在源极跟随器的第一输出端子和差分放大器的第一输入端子之间 放大器和源极跟随器的第二输出端子和差分放大器的第二输入端之间，以形成反馈回路。 此外，电容器分别耦合在源极跟随器的第一端电流源极和源极跟随器的第二输入端之间以及源极跟随器的第二端部电流源极和源极跟随器的第一输入端之间， 从而提高电路的增益和带宽。

公开(公告)号：US07202916B2

公开(公告)日：2007-04-10

申请号：US10707438

申请日：2003-12-15

申请人： Tung-Ming Su ,  Dsun-Chie Twu ,  Liang-Hui Lee

发明人： Tung-Ming Su ,  Dsun-Chie Twu ,  Liang-Hui Lee

IPC分类号： H04N5/50

CPC分类号： H03D7/165

摘要： A television (TV) tuner includes a first mixer having an input terminal coupled to a received RF signal for producing an intermediate frequency signal, a notch filter having an input terminal coupled to the intermediate frequency signal for removing a first range of signals centered at a first center frequency in the intermediate frequency signal, a band-pass filter having an input terminal coupled to the intermediate frequency signal for passing a second range of signals centered at a second center frequency in the intermediate frequency signal, and a second mixer having inputs coupled to a filtered intermediate frequency signal for producing a first output signal. The filtered intermediate frequency signal is received from an output of the notch filter and the band-pass filter.

摘要翻译： 电视（TV）调谐器包括具有耦合到接收的RF信号的输入端用于产生中频信号的第一混频器，陷波滤波器具有耦合到中频信号的输入端，用于去除以 中频频率信号中的第一中心频率，带通滤波器，其具有耦合到中频信号的输入端，用于通过以中间频率信号为中心的第二中心频率的第二范围的信号;以及第二混频器，其输入耦合 到用于产生第一输出信号的滤波后的中频信号。 滤波后的中频信号从陷波滤波器和带通滤波器的输出接收。

公开(公告)号：US20080238548A1

公开(公告)日：2008-10-02

申请号：US11980708

申请日：2007-10-31

申请人： Tung-Ming Su ,  Chun Che Lin

发明人： Tung-Ming Su ,  Chun Che Lin

IPC分类号： H03F3/45

CPC分类号： H03F3/45179 ,  H03F1/3211 ,  H03F1/483 ,  H03F2200/36 ,  H03F2203/45018 ,  H03F2203/45134 ,  H03F2203/45288 ,  H03F2203/45296 ,  H03F2203/45318 ,  H03F2203/45528 ,  H03F2203/45722

摘要： The present invention relates to a differential feedback amplifier circuit with cross coupled capacitors. Wherein, the first and second input terminals of a source follower are respectively coupled to the first and second output terminals of a differential amplifier, and a resistor is respectively coupled between the first output terminal of the source follower and the first input terminal of the differential amplifier and between the second output terminal of the source follower and the second input terminal of the differential amplifier in order to form a feedback loop. In addition, a capacitor is respectively coupled between the first end current source gate of the source follower and the second input terminal of the source follower and between the second end current source gate of the source follower and the first input terminal of the source follower, so as to improve the circuit gain and bandwidth.

摘要翻译： 本发明涉及一种具有交叉耦合电容器的差分反馈放大器电路。 其中，源极跟随器的第一和第二输入端分别耦合到差分放大器的第一和第二输出端子，并且电阻器分别耦合在源极跟随器的第一输出端子和差分放大器的第一输入端子之间 放大器和源极跟随器的第二输出端子和差分放大器的第二输入端之间，以形成反馈回路。 此外，电容器分别耦合在源极跟随器的第一端电流源极和源极跟随器的第二输入端之间以及源极跟随器的第二端部电流源极和源极跟随器的第一输入端之间， 从而提高电路的增益和带宽。

公开(公告)号：US07180553B2

公开(公告)日：2007-02-20

申请号：US10707520

申请日：2003-12-19

申请人： Tung-Ming Su

发明人： Tung-Ming Su

IPC分类号： H04N5/44

CPC分类号： H03D7/165

摘要： A television receiver includes a digital TV preamp for amplifying a received RF signal within a first frequency range, a satellite TV preamp for amplifying the received RF signal within a second frequency range, a first mixer having inputs coupled to the output of either the digital or satellite TV preamp according to a mode selection signal, a digital TV band-pass filter for filtering the output of the first mixer centered at a first center frequency being selectively coupled to the output of the first mixer according to the mode selection signal, a satellite TV band-pass filter for filtering the output of the first mixer centered at a second center frequency being selectively coupled to the output of the first mixer according to the mode selection signal, and a second mixer stage having inputs coupled to the output of the digital TV filter stage and the satellite TV filter stage.

摘要翻译： 电视接收机包括用于放大在第一频率范围内的接收的RF信号的数字电视前置放大器，用于在第二频率范围内放大所接收的RF信号的卫星TV前置放大器，具有耦合到数字或 卫星电视前置放大器，根据模式选择信号的数字TV带通滤波器，用于根据模式选择信号对以第一中心频率为中心的第一混频器的输出进行滤波，选择性地耦合到第一混频器的输出;卫星 TV频带滤波器，用于根据模式选择信号对以第二中心频率为中心的第一混频器的输出进行滤波，选择性地耦合到第一混频器的输出;以及第二混频器级，具有耦合到数字 电视滤镜舞台和卫星电视滤镜舞台。