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21. 发明授权

US08294520B2 Switchable multiband LNA design 有权
标题翻译：可切换多频段LNA设计
公开(公告)号：US08294520B2
公开(公告)日：2012-10-23
申请号：US12599966
申请日：2008-05-19
申请人： Jonathan Borremans
发明人： Jonathan Borremans
IPC分类号： H03F1/34
CPC分类号： H03F1/223 , H03F1/342 , H03F1/42 , H03F1/56 , H03F3/195 , H03F3/72 , H03F2200/111 , H03F2200/151 , H03F2200/222 , H03F2200/294 , H03F2200/306 , H03F2200/378 , H03F2200/429 , H03F2200/451 , H03F2203/7209
摘要： A low noise amplifying (LNA) circuit comprising an amplifying section (11, 12) and a feedback means (14) arranged for providing input matching from the output to the input. The LNA circuit further comprises at least one frequency band determining inductor (15) having a predetermined resonance frequency for influencing at least one frequency band in which the amplifying section operates. The at least one inductor is directly connected to the output of the circuit and the feedback means (14) provides a feedback connection for the section (s) to the input. In this way, the at least one frequency band in which the amplifying section operates is substantially completely determined by the at least one frequency band determining inductor (15).
摘要翻译：一种低噪声放大（LNA）电路，包括放大部分（11,12）和反馈装置（14），反馈装置（14）用于提供从输出到输入的输入匹配。 LNA电路还包括具有预定谐振频率的至少一个频带确定电感器（15），用于影响放大部分工作的至少一个频带。至少一个电感器直接连接到电路的输出端，并且反馈装置（14）提供用于输入端的部分的反馈连接。以这种方式，放大部分工作的至少一个频带基本上完全由至少一个频带确定电感器（15）确定。

22. 发明授权

US07378911B2 Wideband ultra low noise amplifier 有权
标题翻译：宽带超低噪声放大器
公开(公告)号：US07378911B2
公开(公告)日：2008-05-27
申请号：US11377824
申请日：2006-03-16
申请人： Aly Ismail , Edward Youssoufian
发明人： Aly Ismail , Edward Youssoufian
IPC分类号： H03F3/04
CPC分类号： H03F1/26 , H03F1/223 , H03F1/342 , H03F3/193 , H03F2200/151 , H03F2200/294 , H03F2200/372 , H03F2200/451 , H03F2200/72
摘要： A circuit and method of reducing noise in the circuit comprises a first transistor and an amplifier operatively connected to the first transistor, wherein the amplifier comprises a plurality of transistors and is adapted to amplify an input signal, and wherein the input signal is differentially captured at an output of the first transistor and the amplifier. Preferably, the plurality of transistors comprises a second transistor and a third transistor. Furthermore, a noise level of the first transistor and the third transistor are preferably cancelled. The size of the second transistor may be approximately 1/50Ω. Preferably, a gain on an amplifier stage formed by the second transistor and the third transistor is adapted to be increased. Moreover, an equivalent transconductance of the amplifier is preferably independent of an impedance matching on the amplifier. Preferably, a noise figure level of the circuit is less than approximately 1 dB.
摘要翻译：降低电路噪声的电路和方法包括第一晶体管和可操作地连接到第一晶体管的放大器，其中放大器包括多个晶体管，并且适于放大输入信号，并且其中输入信号在第一晶体管和放大器的输出。优选地，多个晶体管包括第二晶体管和第三晶体管。此外，优选地消除第一晶体管和第三晶体管的噪声电平。第二晶体管的尺寸可以是大约1 / 50Omega。优选地，由第二晶体管和第三晶体管形成的放大器级的增益适于增加。此外，放大器的等效跨导优选地与放大器上的阻抗匹配无关。优选地，电路的噪声系数电平小于约1dB。

23. 发明授权

US5661437A Negative feedback variable gain amplifier circuit 失效
标题翻译：负反馈可变增益放大器电路
公开(公告)号：US5661437A
公开(公告)日：1997-08-26
申请号：US514381
申请日：1995-08-11
申请人： Kenjiro Nishikawa , Tsuneo Tokumitsu
发明人： Kenjiro Nishikawa , Tsuneo Tokumitsu
IPC分类号： H03F1/34 , H03G1/00 , H03G3/30
CPC分类号： H03F1/34 , H03F1/342 , H03G1/007 , H03F2200/151
摘要： A variable gain amplifier circuit in which a feedback circuit that feeds back the output signal of an amplifier from its output terminal to its input terminal is composed of an FET. The gate terminal of the feedback FET is connected to the output terminal of the amplifier through a capacitor, and the source terminal of the feedback FET is connected to the input terminal of the amplifier. The gain of the amplifying circuit is controlled by varying the transconductance of the feedback FET by controlling a bias voltage applied to the gate or drain terminal of the feedback FET. This makes it possible to control the gain independently of the physical dimension of the feedback FET, and at the same time, to prevent the input signal from being transmitted from the input side to the output side through the feedback circuit.
摘要翻译：一种可变增益放大器电路，其中反馈电路将放大器的输出信号从其输出端子反馈到其输入端子由FET组成。反馈FET的栅极端子通过电容器连接到放大器的输出端子，反馈FET的源极端子连接到放大器的输入端子。通过控制施加到反馈FET的栅极或漏极端子的偏置电压来改变反馈FET的跨导来控制放大电路的增益。这使得可以独立于反馈FET的物理尺寸来控制增益，并且同时防止输入信号通过反馈电路从输入侧传输到输出侧。

24. 发明授权

US10506318B2 System and method for signal read-out using source follower feedback 有权
公开(公告)号：US10506318B2
公开(公告)日：2019-12-10
申请号：US16045372
申请日：2018-07-25
申请人： Infineon Technologies AG
发明人： Francesco Polo , Richard Gaggl
IPC分类号： G06G7/12 , H04R1/04 , H03F3/50 , H03F1/14 , H03F3/45 , H04R3/00 , H04R19/04
CPC分类号： H04R1/04 , H03F1/14 , H03F3/45179 , H03F3/45376 , H03F3/45475 , H03F3/505 , H04R3/00 , H04R19/04 , H03F2200/03 , H03F2200/151 , H03F2200/153 , H03F2203/45116 , H03F2203/45384 , H03F2203/45512 , H03F2203/45544 , H03F2203/45594 , H03F2203/5033 , H04R2201/003
摘要： In accordance with an embodiment, a circuit includes an amplifier and a programmable capacitor coupled between an output of the first non-inverting and the input of the first amplifier.

25. 发明申请

US20180132024A1 System and Method for Signal Read-Out Using Source Follower Feedback 审中-公开
公开(公告)号：US20180132024A1
公开(公告)日：2018-05-10
申请号：US15864673
申请日：2018-01-08
申请人： Infineon Technologies AG
发明人： Francesco Polo , Richard Gaggl
IPC分类号： H04R1/04 , H03F1/14 , H03F3/45 , H03F3/50
CPC分类号： H04R1/04 , H03F1/14 , H03F3/45179 , H03F3/505 , H03F2200/03 , H03F2200/151 , H03F2200/153 , H03F2203/45116 , H03F2203/5033 , H04R2201/003
摘要： An embodiment amplifier circuit includes a pair of subcircuits that includes a first subcircuit and a second subcircuit, each of which includes a buffer amplifier and a feedback circuit that includes a feedback capacitor. The amplifier circuit also includes a pair of output terminals. The first subcircuit and the second subcircuit each generate a different output signal of a pair of output signals that includes a first output signal and a second output signal. The amplifier circuit is configured for receiving a positive differential input signal at the first subcircuit, receiving a negative differential input signal at the second subcircuit, and receiving the pair of output signals at the pair of output terminals. The amplifier circuit is also configured for transmitting the first output signal to the feedback circuit of the first subcircuit, and transmitting the second output signal to the feedback circuit of the second subcircuit.

26. 发明申请

US20170245034A1 System and Method for Signal Read-Out Using Source Follower Feedback 有权
公开(公告)号：US20170245034A1
公开(公告)日：2017-08-24
申请号：US15050972
申请日：2016-02-23
申请人： Infineon Technologies AG
发明人： Francesco Polo , Richard Gaggl
IPC分类号： H04R1/04 , H03F3/45
CPC分类号： H04R1/04 , H03F1/14 , H03F3/45179 , H03F3/505 , H03F2200/03 , H03F2200/151 , H03F2200/153 , H03F2203/45116 , H03F2203/5033 , H04R2201/003
摘要： An embodiment amplifier circuit includes a pair of subcircuits that includes a first subcircuit and a second subcircuit, each of which includes a buffer amplifier and a feedback circuit that includes a feedback capacitor. The amplifier circuit also includes a pair of output terminals. The first subcircuit and the second subcircuit each generate a different output signal of a pair of output signals that includes a first output signal and a second output signal. The amplifier circuit is configured for receiving a positive differential input signal at the first subcircuit, receiving a negative differential input signal at the second subcircuit, and receiving the pair of output signals at the pair of output terminals. The amplifier circuit is also configured for transmitting the first output signal to the feedback circuit of the first subcircuit, and transmitting the second output signal to the feedback circuit of the second subcircuit.

27. 发明授权

US09641128B2 High linearity structure for amplifier 有权
公开(公告)号：US09641128B2
公开(公告)日：2017-05-02
申请号：US14812867
申请日：2015-07-29
申请人： QUALCOMM Incorporated
发明人： Chien-Chung Yang , Vijayakumar Dhanasekaran
IPC分类号： H03G3/30 , H03F1/02 , H03F3/185 , H03F3/21 , H03F3/217
CPC分类号： H03F1/0205 , H03F1/0277 , H03F1/305 , H03F1/3205 , H03F3/185 , H03F3/187 , H03F3/211 , H03F3/213 , H03F3/2171 , H03F3/45475 , H03F3/505 , H03F3/72 , H03F2200/03 , H03F2200/129 , H03F2200/151 , H03F2200/156 , H03F2200/159 , H03F2200/18 , H03F2200/294 , H03F2200/411 , H03F2200/414 , H03F2200/417 , H03F2200/69 , H03F2203/21106 , H03F2203/45114 , H03F2203/45138 , H03F2203/45151 , H03F2203/45224 , H03F2203/45521 , H03F2203/45528 , H03F2203/45536 , H03F2203/45594 , H03F2203/45601 , H03F2203/45694 , H03F2203/45698 , H03F2203/45702 , H03F2203/45718 , H03F2203/7221 , H03F2203/7236
摘要： An apparatus includes an input amplifier stage and a switch that has a first terminal at a virtual ground input of the input amplifier stage.

28. 发明申请

US20170077883A1 SELF-REGULATED REFERENCE FOR SWITCHED CAPACITOR CIRCUIT 有权
标题翻译：用于开关电容器电路的自调节参考
公开(公告)号：US20170077883A1
公开(公告)日：2017-03-16
申请号：US15166066
申请日：2016-05-26
申请人： MediaTek Inc.
发明人： Wen-Hua Chang
IPC分类号： H03F3/45 , H03H7/00
CPC分类号： H03F3/45686 , H03F1/083 , H03F1/30 , H03F3/005 , H03F3/45 , H03F3/45273 , H03F2200/151 , H03F2200/153 , H03F2200/159 , H03F2200/42 , H03F2200/75 , H03F2203/45012 , H03F2203/45061 , H03F2203/45156 , H03F2203/45221 , H03F2203/45244 , H03F2203/45514 , H03F2203/45546 , H03F2203/45551 , H03F2203/45616 , H03H7/004
摘要： A switched-capacitor circuit comprising a differential operational amplifier and a feedback circuit is described. In some embodiments, the feedback circuit may be configured to provide a reference voltage that is insensitive to temperature and/or process variations. In some embodiments, the feedback circuit may be configured to mitigate the time delay associated with one or more capacitors of the switched-capacitor circuit. The switched-capacitor circuit may be controlled by a pair of control signals. During a first phase, one or more capacitors may be charged, or discharged, through an input signal. During a second phase, the electric charge of the one or more capacitors may be retained.
摘要翻译：描述了包括差分运算放大器和反馈电路的开关电容器电路。在一些实施例中，反馈电路可以被配置为提供对温度和/或过程变化不敏感的参考电压。在一些实施例中，反馈电路可以被配置为减轻与开关电容器电路的一个或多个电容器相关联的时间延迟。开关电容电路可以由一对控制信号控制。在第一阶段期间，可以通过输入信号对一个或多个电容器进行充电或放电。在第二阶段期间，可以保持一个或多个电容器的电荷。

29. 发明申请

US20170033744A1 HIGH LINEARITY STRUCTURE FOR AMPLIFIER 有权
标题翻译：放大器的高线性结构
公开(公告)号：US20170033744A1
公开(公告)日：2017-02-02
申请号：US14812867
申请日：2015-07-29
申请人： QUALCOMM Incorporated
发明人： Chien-Chung Yang , Vijayakumar Dhanasekaran
IPC分类号： H03F1/02 , H03F3/21 , H03F3/217 , H03F3/185
CPC分类号： H03F1/0205 , H03F1/0277 , H03F1/305 , H03F1/3205 , H03F3/185 , H03F3/187 , H03F3/211 , H03F3/213 , H03F3/2171 , H03F3/45475 , H03F3/505 , H03F3/72 , H03F2200/03 , H03F2200/129 , H03F2200/151 , H03F2200/156 , H03F2200/159 , H03F2200/18 , H03F2200/294 , H03F2200/411 , H03F2200/414 , H03F2200/417 , H03F2200/69 , H03F2203/21106 , H03F2203/45114 , H03F2203/45138 , H03F2203/45151 , H03F2203/45224 , H03F2203/45521 , H03F2203/45528 , H03F2203/45536 , H03F2203/45594 , H03F2203/45601 , H03F2203/45694 , H03F2203/45698 , H03F2203/45702 , H03F2203/45718 , H03F2203/7221 , H03F2203/7236
摘要： An apparatus includes an input amplifier stage and a switch that has a first terminal at a virtual ground input of the input amplifier stage.
摘要翻译：一种装置包括输入放大器级和在输入放大级的虚拟接地输入端具有第一端的开关。

30. 发明申请

US20160182095A1 LOW-IMPEDANCE REFERENCE VOLTAGE GENERATOR 审中-公开
标题翻译：低阻抗基准电压发生器
公开(公告)号：US20160182095A1
公开(公告)日：2016-06-23
申请号：US15056994
申请日：2016-02-29
申请人： Intel Corporation
发明人： Richard Y. Tseng
IPC分类号： H04B1/04 , H03F3/45
CPC分类号： H04B1/04 , G05F1/465 , G05F1/468 , G05F1/565 , G05F1/59 , G05F3/24 , G06F1/26 , H03F3/24 , H03F3/45179 , H03F3/45192 , H03F2200/151 , H03F2203/45114 , H03F2203/45151 , H04B2001/0408
摘要： Described herein is an apparatus and system of a low-impedance reference voltage generator. The apparatus comprises: a voltage-control loop including a first transistor to provide an output voltage; and a current-control loop to sense current through the first transistor, relative to a reference current. The node having the output voltage is a low-impedance node.
摘要翻译：这里描述的是低阻参考电压发生器的装置和系统。该装置包括：电压控制回路，包括提供输出电压的第一晶体管; 以及电流控制环路，用于相对于参考电流感测通过第一晶体管的电流。具有输出电压的节点是低阻抗节点。

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