公开(公告)号：US20110230151A1

公开(公告)日：2011-09-22

申请号：US12959345

申请日：2010-12-02

申请人： Ming-Da Tsai ,  Siu-Chuang Ivan Lu

发明人： Ming-Da Tsai ,  Siu-Chuang Ivan Lu

IPC分类号： H04B1/18

CPC分类号： H04B1/1638 ,  H04B1/0475

摘要： A frequency-selective circuit includes a signal input port, a signal output port, and a frequency response control block. The frequency response control block includes a mixer module and a filter module. The mixer module has a first port electrically connected to a signal path between the signal input port and the signal output port, a second port electrically connected to the filter module, and a local oscillator (LO) port. The mixer module operates according to an LO input received by the LO port. The filter module is electrically connected to the second port of the mixer module.

摘要翻译： 频率选择电路包括信号输入端口，信号输出端口和频率响应控制块。 频率响应控制块包括混频器模块和滤波器模块。 混频器模块具有电连接到信号输入端口和信号输出端口之间的信号路径的第一端口，电连接到滤波器模块的第二端口和本地振荡器（LO）端口。 混频器模块根据LO端口接收到的LO输入进行工作。 过滤器模块电连接到混合器模块的第二端口。

公开(公告)号：US09130642B2

公开(公告)日：2015-09-08

申请号：US12959345

申请日：2010-12-02

申请人： Ming-Da Tsai ,  Siu-Chuang Ivan Lu

发明人： Ming-Da Tsai ,  Siu-Chuang Ivan Lu

IPC分类号： H04B1/26 ,  H04B1/16 ,  H04B1/04

CPC分类号： H04B1/1638 ,  H04B1/0475

摘要： A frequency-selective circuit includes a signal input port, a signal output port, and a frequency response control block. The frequency response control block includes a mixer module and a filter module. The mixer module has a first port electrically connected to a signal path between the signal input port and the signal output port, a second port electrically connected to the filter module, and a local oscillator (LO) port. The mixer module operates according to an LO input received by the LO port. The filter module is electrically connected to the second port of the mixer module.

摘要翻译： 频率选择电路包括信号输入端口，信号输出端口和频率响应控制块。 频率响应控制块包括混频器模块和滤波器模块。 混频器模块具有电连接到信号输入端口和信号输出端口之间的信号路径的第一端口，电连接到滤波器模块的第二端口和本地振荡器（LO）端口。 混频器模块根据LO端口接收到的LO输入进行工作。 过滤器模块电连接到混合器模块的第二端口。

公开(公告)号：US07725092B2

公开(公告)日：2010-05-25

申请号：US11697347

申请日：2007-04-06

申请人： Ming-Da Tsai ,  Yen-Horng Chen

发明人： Ming-Da Tsai ,  Yen-Horng Chen

IPC分类号： H04B15/00 ,  H04B1/26

CPC分类号： H03D7/1441 ,  H03D7/1433 ,  H03D7/1458

摘要： A dynamic current steering mixer. The dynamic current steering mixer comprises a Gilbert cell mixer core, a pair of load devices, a dynamic current steering cell, and a transconductor cell. The Gilbert cell mixer core has first and second nodes, receives a first differential input signal, and provides a differential output signal at the first nodes thereof. The load devices are respectively coupled between the first nodes of the Gilbert cell mixer core and a first fixed voltage. The dynamic current steering cell has third nodes coupled to the second nodes and fourth nodes. The transconductor cell is coupled between the fourth nodes and a second fixed voltage and receives a second differential input signal. The dynamic current steering cell alternately steers current of the transconductor cell to or away from the Gilbert cell mixer core.

摘要翻译： 动态电流转向搅拌机。 动态电流转向混合器包括吉尔伯特单元混频器内核，一对负载装置，动态电流导向单元和跨导电池。 吉尔伯特单元混频器内核具有第一和第二节点，接收第一差分输入信号，并在其第一个节点处提供差分输出信号。 负载设备分别耦合在吉尔伯特单元混频器核心的第一节点和第一固定电压之间。 动态电流导向单元具有耦合到第二节点和第四节点的第三节点。 跨导电池耦合在第四节点和第二固定电压之间并且接收第二差分输入信号。 动态电流导向单元交替地将跨导电池的电流转向或离开吉尔伯特电池混频器核心。

公开(公告)号：US20100033148A1

公开(公告)日：2010-02-11

申请号：US12581154

申请日：2009-10-18

申请人： Ming-Da Tsai

发明人： Ming-Da Tsai

IPC分类号： G05F1/10

CPC分类号： G05F1/56

摘要： A circuit for providing an output voltage substantially equal to a reference voltage includes: a low drop-out (LDO) regulator coupled to the reference voltage for producing the output voltage at an output terminal; a reference current source having a first end and a second end for providing a predetermined reference current; a first transistor having a first terminal coupled to a first supply voltage, a second terminal, and a control terminal coupled to the second terminal of the first transistor; a first switch for selectively coupling the second terminal of the first transistor to the first end of the reference current source according to a first control signal; and a second transistor having a first terminal coupled to the first supply voltage, a control terminal coupled to the control terminal of the first transistor, and a second terminal coupled to the output terminal.

摘要翻译： 用于提供基本上等于参考电压的输出电压的电路包括：耦合到参考电压的低输出（LDO）调节器，用于在输出端产生输出电压; 具有用于提供预定参考电流的第一端和第二端的参考电流源; 第一晶体管，具有耦合到第一电源电压的第一端子，第二端子和耦合到第一晶体管的第二端子的控制端子; 第一开关，用于根据第一控制信号选择性地将第一晶体管的第二端子耦合到参考电流源的第一端; 以及第二晶体管，具有耦合到第一电源电压的第一端子，耦合到第一晶体管的控制端子的控制端子和耦合到输出端子的第二端子。

公开(公告)号：US20090278624A1

公开(公告)日：2009-11-12

申请号：US12411397

申请日：2009-03-26

申请人： Ming-Da Tsai ,  Arun Natarajan

发明人： Ming-Da Tsai ,  Arun Natarajan

IPC分类号： H03H7/00

CPC分类号： H01P1/18

摘要： A reflection-type phase shifter is provided. The reflection-type phase shifter has a coupler, a first reflection load, and a second reflection load. The coupler has an input port for receiving an input signal and an isolated port for outputting an output signal due to a first reflected signal at a through port and a second reflected signal at a coupled port. The first reflection load reflects the first fraction of the input signal to thereby generate the first reflected signal. The second reflection load reflects the second fraction of the input signal to thereby generate the second reflected signal. In addition, at least one of the first and second reflection loads is equivalent to a transmission line.

摘要翻译： 提供反射型移相器。 反射型移相器具有耦合器，第一反射负载和第二反射负载。 耦合器具有用于接收输入信号的输入端口和用于由于通过端口处的第一反射信号和耦合端口处的第二反射信号而输出输出信号的隔离端口。 第一反射负载反映输入信号的第一分数，从而产生第一反射信号。 第二反射负载反映输入信号的第二分数，从而产生第二反射信号。 此外，第一和第二反射负载中的至少一个等效于传输线。

公开(公告)号：US07405626B2

公开(公告)日：2008-07-29

申请号：US11603222

申请日：2006-11-22

申请人： Shih-Chieh Shin ,  Ming-Da Tsai ,  Huei Wang

发明人： Shih-Chieh Shin ,  Ming-Da Tsai ,  Huei Wang

IPC分类号： H03F3/60

CPC分类号： H03F3/605 ,  H03F1/56 ,  H03F3/191 ,  H03F2200/108 ,  H03F2200/387 ,  H03F2200/451 ,  H03F2200/75

摘要： A distributed amplifier is disclosed herein, which includes a signal amplification unit amplifying a RF input signal fed into the RF signal, a first biasing circuit providing a direct current (DC) bias signal, a second biasing circuit providing a DC bias signal, the variable terminal resistance providing an adjustable resistance, a RF signal input terminal provided for input of the RF input signal and a RF signal output terminal for output of a RF output signal. The output RF signal from the distributed amplifier is obtained from a gained version of the input RF signal. Since a load mismatch issue is compensated, a gain flatness issue is considerably improved and thus a gain-adjustable range is increased with respect to the distributed amplifier.

摘要翻译： 本文公开了一种分布式放大器，其包括放大馈入RF信号的RF输入信号的信号放大单元，提供直流（DC）偏置信号的第一偏置电路，提供DC偏置信号的第二偏置电路， 提供可调电阻的端子电阻，提供用于RF输入信号的输入的RF信号输入端和用于输出RF输出信号的RF信号输出端。 来自分布式放大器的输出RF信号从获得的输入RF信号的版本获得。 由于负载失配问题被补偿，因此增益平坦度问题得到显着改善，因此相对于分布式放大器增益可调范围增加。

公开(公告)号：US08441318B2

公开(公告)日：2013-05-14

申请号：US13109000

申请日：2011-05-17

申请人： Ming-Da Tsai ,  Yu-Hsin Lin

发明人： Ming-Da Tsai ,  Yu-Hsin Lin

IPC分类号： H03F3/45

CPC分类号： H03F3/3022 ,  H03F3/45179 ,  H03F3/45242 ,  H03F3/45475 ,  H03F3/72 ,  H03F2200/294 ,  H03F2203/45386 ,  H03F2203/45521 ,  H03F2203/7236 ,  H03G1/0088

摘要： A push-pull low noise amplifier (LNA) includes at least one amplifier block. Each amplifier block includes a bypass stage and at least one gain cell. The bypass stage has a first node and a second node. The gain cell has an input terminal and an output terminal, comprising a loading stage and a driving stage. When the push-pull LNA is in a first gain mode, the loading stage is enabled and the bypassing stage is disabled; and when the push-pull LNA is in a second gain mode, the loading stage is disabled and the bypassing stage is enabled.

摘要翻译： 推挽式低噪声放大器（LNA）包括至少一个放大器块。 每个放大器块包括旁路级和至少一个增益单元。 旁路级具有第一节点和第二节点。 增益单元具有输入端子和输出端子，包括负载级和驱动级。 当推挽LNA处于第一增益模式时，加载阶段被使能，旁路级被禁止; 并且当推挽LNA处于第二增益模式时，加载阶段被禁用并且旁路级被使能。

公开(公告)号：US08143869B2

公开(公告)日：2012-03-27

申请号：US12581154

申请日：2009-10-18

申请人： Ming-Da Tsai

发明人： Ming-Da Tsai

IPC分类号： G05F1/00

CPC分类号： G05F1/56

摘要： A circuit for providing an output voltage substantially equal to a reference voltage includes: a low drop-out (LDO) regulator coupled to the reference voltage for producing the output voltage at an output terminal; a reference current source having a first end and a second end for providing a predetermined reference current; a first transistor having a first terminal coupled to a first supply voltage, a second terminal, and a control terminal coupled to the second terminal of the first transistor; a first switch for selectively coupling the second terminal of the first transistor to the first end of the reference current source according to a first control signal; and a second transistor having a first terminal coupled to the first supply voltage, a control terminal coupled to the control terminal of the first transistor, and a second terminal coupled to the output terminal.

摘要翻译： 用于提供基本上等于参考电压的输出电压的电路包括：耦合到参考电压的低输出（LDO）调节器，用于在输出端产生输出电压; 具有用于提供预定参考电流的第一端和第二端的参考电流源; 第一晶体管，具有耦合到第一电源电压的第一端子，第二端子和耦合到第一晶体管的第二端子的控制端子; 第一开关，用于根据第一控制信号选择性地将第一晶体管的第二端子耦合到参考电流源的第一端; 以及第二晶体管，具有耦合到第一电源电压的第一端子，耦合到第一晶体管的控制端子的控制端子和耦合到输出端子的第二端子。

公开(公告)号：US20100244969A1

公开(公告)日：2010-09-30

申请号：US12413687

申请日：2009-03-30

申请人： Ming-Da Tsai ,  Ling-Wei Ke

发明人： Ming-Da Tsai ,  Ling-Wei Ke

IPC分类号： H03L1/02

CPC分类号： H03L1/023 ,  H03L1/028

摘要： A temperature compensated oscillation circuit capable of providing a stable frequency output over temperature is provided, in which an oscillator with a crystal resonator is arranged to generate an oscillation signal with an output frequency, and a temperature sensor provides a temperature compensation voltage of which a function is linear with respect to an ambient temperature of the oscillator. A first accumulation mode MOS varactor is coupled to the oscillator, and the first accumulation mode MOS varactor adjusts a capacitance thereof in response to the temperature compensation voltage, such that the coupled oscillator has a frequency compensation over temperature for the oscillation signal, wherein the frequency compensation substantially varies as an inverse function of a deviation of the crystal resonator over temperature when the ambient temperature is within a predetermined temperature range.

摘要翻译： 提供能够提供温度稳定的频率输出的温度补偿振荡电路，其中具有晶体谐振器的振荡器被布置成产生具有输出频率的振荡信号，并且温度传感器提供具有功能的温度补偿电压 相对于振荡器的环境温度是线性的。 第一累积模式MOS变容二极管耦合到振荡器，并且第一累积模式MOS变容二极管响应于温度补偿电压来调节其电容，使得耦合振荡器对于振荡信号具有对温度的频率补偿，其中频率 当环境温度在预定温度范围内时，补偿作为晶体谐振器与温度的偏差的反函数基本上变化。

公开(公告)号：US20100195767A1

公开(公告)日：2010-08-05

申请号：US12758149

申请日：2010-04-12

申请人： Ming-Da Tsai ,  Yen-Horng Chen

发明人： Ming-Da Tsai ,  Yen-Horng Chen

IPC分类号： H04L27/14

CPC分类号： H03D7/1441 ,  H03D7/1433 ,  H03D7/1458

摘要： A dynamic current steering mixer. The dynamic current steering mixer comprises a Gilbert cell mixer core, a pair of load devices, a dynamic current steering cell, and a transconductor cell. The Gilbert cell mixer core has first and second nodes, receives a first differential input signal, and provides a differential output signal at the first nodes thereof. The load devices are respectively coupled between the first nodes of the Gilbert cell mixer core and a first fixed voltage. The dynamic current steering cell has third nodes coupled to the second nodes and fourth nodes. The transconductor cell is coupled between the fourth nodes and a second fixed voltage and receives a second differential input signal. The dynamic current steering cell alternately steers current of the transconductor cell to or away from the Gilbert cell mixer core.

摘要翻译： 动态电流转向搅拌机。 动态电流转向混合器包括吉尔伯特单元混频器内核，一对负载装置，动态电流导向单元和跨导电池。 吉尔伯特单元混频器内核具有第一和第二节点，接收第一差分输入信号，并在其第一个节点处提供差分输出信号。 负载设备分别耦合在吉尔伯特单元混频器核心的第一节点和第一固定电压之间。 动态电流导向单元具有耦合到第二节点和第四节点的第三节点。 跨导电池耦合在第四节点和第二固定电压之间并且接收第二差分输入信号。 动态电流导向单元交替地将跨导电池的电流转向或离开吉尔伯特电池混频器核心。