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1. 发明申请

US20090108938A1 CIRCUIT AND METHOD FOR DYNAMIC CURRENT COMPENSATION 有权
标题翻译：用于动态电流补偿的电路和方法
公开(公告)号：US20090108938A1
公开(公告)日：2009-04-30
申请号：US12170866
申请日：2008-07-10
申请人： SHIAU-WEN KAO , MING-CHING KUO , CHIH-HUNG CHEN
发明人： SHIAU-WEN KAO , MING-CHING KUO , CHIH-HUNG CHEN
IPC分类号： H03F1/30 , H03F3/45
CPC分类号： H03F3/45475 , H03F3/45183 , H03F3/45659 , H03F2200/411 , H03F2200/456 , H03F2203/45526 , H03F2203/45528
摘要： An operational amplifier includes a first stage and a second stage, the first stage for receiving two input signals and the second stage being coupled to the first stage, wherein the second stage includes a first part with a first output of the operational amplifier, and a second part with a second output of the operational amplifier. A method includes providing a first current to the first part of the second stage, and providing a second current to the second part of the second stage. The method further includes adjusting the first current based on a current consumption of the first part of the second stage, and adjusting the second current based on a current consumption of the second part of the second stage, wherein the sum of the first current and the second current is substantially constant.
摘要翻译：运算放大器包括第一级和第二级，第一级用于接收两个输入信号，第二级耦合到第一级，其中第二级包括具有运算放大器的第一输出的第一部分和第二部分是运算放大器的第二个输出。一种方法包括向第二级的第一部分提供第一电流，并向第二级的第二部分提供第二电流。该方法还包括基于第二级的第一部分的电流消耗来调整第一电流，并且基于第二级的第二部分的电流消耗来调整第二电流，其中第一电流和第二电流基本上是恒定的。

2. 发明申请

US20090108943A1 LOW NOISE AMPLIFIER 有权
标题翻译：低噪音放大器
公开(公告)号：US20090108943A1
公开(公告)日：2009-04-30
申请号：US12188280
申请日：2008-08-08
申请人： MING-CHING KUO , SHIAU-WEN KAO , CHIH-HUNG CHEN
发明人： MING-CHING KUO , SHIAU-WEN KAO , CHIH-HUNG CHEN
IPC分类号： H03F3/45
CPC分类号： H03F3/45179 , H03F3/19 , H03F2200/294 , H03F2203/45306 , H03F2203/45318
摘要： A low-noise amplifier circuit to convert a single-ended input into a dual-ended output includes an input transconductance stage circuit, including a first MOS transistor coupled in parallel with a second MOS transistor; a current buffer circuit, including a third MOS transistor coupled in parallel with a fourth MOS transistor; each of the first, second, third, and fourth transistors having a body, gate, source, and drain; the input transconductance stage circuit and the current buffer circuit being cascode coupled, forming a cascode amplifier configuration; the single-ended input being at the source of one of the first and second transistors in the input transconductance stage circuit; the dual-ended output being a differential output across the drain of the third transistor and the drain of the fourth transistor; the first and second transistors of the input transconductance stage circuit being cross-coupled, wherein the body of the first transistor is coupled to the source of the second transistor, and the body of the second transistor is coupled to the source of the first transistor; and the third and fourth transistors of the current buffer circuit being cross-coupled, wherein a first capacitance is coupled between the gate of the third transistor and the source of the fourth transistor, and a second capacitance is coupled between the gate of the fourth transistor and the source of the third transistor.
摘要翻译：将单端输入转换为双端输出的低噪声放大器电路包括输入跨导级电路，包括与第二MOS晶体管并联耦合的第一MOS晶体管; 电流缓冲电路，包括与第四MOS晶体管并联耦合的第三MOS晶体管; 第一，第二，第三和第四晶体管中的每一个具有主体，栅极，源极和漏极; 输入跨导级电路和当前缓冲电路被共源共栅耦合，形成共源共栅放大器配置; 单端输入在输入跨导级电路中位于第一和第二晶体管之一的源极处; 所述双端输出是跨越所述第三晶体管的漏极和所述第四晶体管的漏极的差分输出; 输入跨导级电路的第一和第二晶体管交叉耦合，其中第一晶体管的主体耦合到第二晶体管的源极，并且第二晶体管的主体耦合到第一晶体管的源极; 并且当前缓冲电路的第三和第四晶体管是交叉耦合的，其中第一电容耦合在第三晶体管的栅极和第四晶体管的源极之间，第二电容耦合在第四晶体管的栅极之间和第三晶体管的源极。

3. 发明申请

US20090108944A1 LOW-NOISE AMPLIFIER CIRCUIT INCLUDING BAND-STOP FILTER 有权
标题翻译：低噪声放大器电路，包括停止滤波器
公开(公告)号：US20090108944A1
公开(公告)日：2009-04-30
申请号：US12188276
申请日：2008-08-08
申请人： MING-CHING KUO , Hsiao-Wen Kao , Chih-Hung Chen
发明人： MING-CHING KUO , Hsiao-Wen Kao , Chih-Hung Chen
IPC分类号： H03F3/191
CPC分类号： H03F3/193 , H03F1/56 , H03F2200/168 , H03F2200/294 , H03F2200/451 , H03H7/0115 , H03H7/1766 , H03H2007/013
摘要： A low-noise amplifier circuit includes a MOS transistor in a common gate amplifier configuration. A single-ended input is at a source of the MOS transistor. A resonant cavity filter circuit is coupled to a gate of the MOS transistor.
摘要翻译：低噪声放大器电路包括公共栅极放大器配置中的MOS晶体管。单端输入是MOS晶体管的源极。谐振腔滤波器电路耦合到MOS晶体管的栅极。

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