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111. 发明授权

EP1484840B1 Radio frequency variable gain amplifier with linearity insensitive to gain 有权
标题翻译：具有增益较不敏感的线性RF可变增益放大器
公开(公告)号：EP1484840B1
公开(公告)日：2011-03-02
申请号：EP04007357.9
申请日：2004-03-26
申请人： Broadcom Corporation
发明人： Behzad, Arya , Lin, Li
IPC分类号： H03G1/00
CPC分类号： H03F1/223 , H03F1/3205 , H03F3/19 , H03F3/45188 , H03F2200/366 , H03F2200/451 , H03G1/0088 , H03G3/001

112. 发明公开

EP2278706A2 High linearity variable gain amplifier 审中-公开
标题翻译： Verstärkermit variablerVerstärkungund hoherLinearität
公开(公告)号：EP2278706A2
公开(公告)日：2011-01-26
申请号：EP10173281.6
申请日：2003-08-13
申请人： LINEAR TECHNOLOGY CORPORATION
发明人： Seremeta, Dorin
IPC分类号： H03F1/32 , H03F1/22 , H03G3/30 , H03G3/20 , H03F3/343
CPC分类号： H03F3/45103 , H03F1/22 , H03F1/3211 , H03F1/34 , H03F3/211 , H03F3/3432 , H03F3/4508 , H03F3/45197 , H03F2203/45024 , H03F2203/45031 , H03F2203/45056 , H03F2203/45134 , H03F2203/45221 , H03F2203/45244 , H03F2203/45288 , H03F2203/45311 , H03F2203/45352 , H03F2203/45731 , H03G1/0088
摘要： Variable gain amplifiers offering high frequency response with improved linearity and reduced power dissipation are provided. An amplifier is disclosed that is constructed from a one-stage topology with multiple signal paths and compensation networks for improved linearity and stable operation. In this amplifier, improved performance is obtained by replacing single transistor components with enhanced active devices which incorporate local negative feedback. One embodiment of the invention is a transconductance enhancement circuit that improves transconductance and input impedance relative to the prior art. A further development is an enhanced active cascode circuit that provides improved linearity. A high frequency bipolar transistor switch is also disclosed that incorporates lateral PNP transistors as high frequency switches with improved OFF-state to ON-state impedance ratio to realize a variable gain function. These circuits are combined in an amplifier circuit that provides variable gain and high frequency performance, with improved linearity, gain, and input impedance.
摘要翻译：提供了具有提高线性度和降低功耗的高频响应的可变增益放大器。公开了一种放大器（300），其由具有多个信号路径和补偿网络的单级拓扑构成，用于改善线性度和稳定的操作。在该放大器中，通过用增强的有源器件（311,312,313,314）替代单个晶体管元件（其包含局部负反馈）来获得改进的性能。本发明的一个实施例是相对于现有技术改进跨导和输入阻抗的跨导增强电路。

113. 发明公开

EP2197109A1 Integrated programmable gain amplifier circuit and system including said circuit 审中-公开
标题翻译：带增益和progammierbarer系统集成放大器包含放大器
公开(公告)号：EP2197109A1
公开(公告)日：2010-06-16
申请号：EP09179092.3
申请日：2009-12-14
申请人： STMicroelectronics Srl
发明人： Nicollini, Germano , Nagari, Angelo
IPC分类号： H03H11/12 , H03G1/00
CPC分类号： H03G1/0088 , H03F3/45475 , H03F2203/45526 , H03F2203/45594 , H03H11/126 , H03H11/1291
摘要： An integrated programmable gain amplifier circuit (22), for receiving, at input, an analog signal (S MC ), including an operational amplifier (33) and a gain setup network (NRC IN , NRC F ) including resistive elements (R 1 -R 4 , Rf 1 -Rf n ) and selection elements (S 1 -S n ), which may be controlled in order to setup the gain of said amplifier circuit (22), is described.
The gain setup network (NRC IN , NRC F ) further includes capacitive elements (C1-C3, Cf 1 -Cf n ), for defining, together with the resistive elements (R 1 -R 4 ) and the operational amplifier (33), an anti-aliasing filter of the active RC type.
摘要翻译：用于接收，在输入到模拟信号（S MC），包括运算放大器（33）和一个增益setupnetwork（NRC IN，NRC F）包括电阻元件（R 1集成的可编程增益放大器电路（22） - R 4，RF 1射频S）和选择元件（S 1 -S n），其可以以被控制，以设定所述放大电路的增益（22）进行说明。增益setupnetwork（NRC IN，NRC F）还包括：电容元件（C1-C3，CF 1为-CF n）时，为限定，与所述电阻元件（R 1 -R 4）和运算放大器（33）一起，的抗混叠的有源RC类型的过滤器。

114. 发明公开

EP2190115A2 Method and system for variable-gain amplifier 有权转让
标题翻译： Methode und System einesVerstärkersmit variablerVerstärkung
公开(公告)号：EP2190115A2
公开(公告)日：2010-05-26
申请号：EP09176801.0
申请日：2009-11-23
申请人： Linear Technology Corporation
发明人： Striflier, Walter, Andrew
IPC分类号： H03G1/00
CPC分类号： H03G1/0088
摘要： Method for a variable-gain amplifier (VGA). A plurality of attenuator nodes is serially connected via a first set of resistors between adjacent attenuator nodes to form an attenuator ladder and coupled to an AC input of the variable-gain amplifier. Each of the attenuator nodes includes a transistor and an RC circuitry that couples drain, gate, and source terminals of the transistor to a control signal for the attenuator node. The VGA also includes an amplifier that has an output produced based on an input to the amplifier connected to a plurality of coupled terminals, each of which is respectively from one of the plurality of attenuator nodes. The RC circuitry for each attenuator node is configured to pass a control signal to the gate terminal of the transistor of the attenuator node in accordance with a first time scale and permit the gate terminal to float in accordance with a second time scale so as to yield a reduction of distortion contributed by the transistor while the transistor is transitioning between on and off states.
摘要翻译：可变增益放大器（VGA）的方法。多个衰减器节点经由相邻衰减器节点之间的第一组电阻器串联连接以形成衰减器梯形并耦合到可变增益放大器的AC输入端。每个衰减器节点包括晶体管和RC电路，其将晶体管的漏极，栅极和源极端子耦合到衰减器节点的控制信号。 VGA还包括放大器，其具有基于连接到多个耦合端子的放大器的输入产生的输出，每个耦合端子分别来自多个衰减器节点中的一个。用于每个衰减器节点的RC电路被配置为根据第一时间尺度将控制信号传递到衰减器节点的晶体管的栅极端子，并允许栅极端子根据第二时间尺度浮动，以便产生当晶体管在导通和截止状态之间转换时，由晶体管贡献的失真减小。

115. 发明授权

EP1485995B1 FRONT STAGE AMPLIFIER WITH DIFFERENT MODES 有权
标题翻译：不同的模式前级放大器
公开(公告)号：EP1485995B1
公开(公告)日：2010-04-28
申请号：EP03743943.7
申请日：2003-02-17
申请人： NXP B.V.
发明人： KWONG, Kam, C.
IPC分类号： H03F1/32 , H03G3/00
CPC分类号： H03G1/0088 , H03F1/0272 , H03F1/32 , H03F2200/294 , H03F2200/372

116. 发明公开

EP2148436A2 Transmitter architectures for communications systems 有权
标题翻译：通信系统的发射机体系结构
公开(公告)号：EP2148436A2
公开(公告)日：2010-01-27
申请号：EP09173341.0
申请日：2001-03-02
申请人： Qualcomm Incorporated
发明人： Younis, Saed , Simic, Emilija , Wilborn, Thomas , Zhang, Haitao , Filipovic, Daniel , Kaufman, Ralph , Lin, Jian
IPC分类号： H03G3/30
CPC分类号： H03G3/3042 , H03F2203/7239 , H03G1/0088
摘要： Transmitter architectures for a communications system having improved performance over conventional transmitter architectures. The improvements include a combination of the following: faster response time for the control signals, improved linearity, reduced interference, reduced power consumption, lower circuit complexity, and lower costs. For a cellular application, these improvements can lead to increased system capacity, smaller telephone size, increased talk and standby times, and greater acceptance of the product. Circuitry is provided to speed up the response time of a control signal. The control loop for various elements in the transmit signal path are integrated. A gain control mechanism allows for accurate adjustment of the output transmit power level. Control mechanisms are provided to power down the power amplifier, or th e entire transmit signal path, when not needed. The gains of the various elements in the transmit signal path are controlled to reduce transients in the output transmit power, and to also ensure that transients are downward.
摘要翻译：用于通信系统的发射机架构与传统发射器架构相比具有改进的性能。这些改进包括以下几点的结合：控制信号的响应时间更快，线性度更高，干扰更少，功耗更低，电路复杂性更低，成本更低。对于蜂窝应用来说，这些改进可以提高系统容量，缩小电话尺寸，增加通话和待机时间，并提高产品的接受度。提供电路来加速控制信号的响应时间。发射信号路径中各种元件的控制回路是集成的。增益控制机制允许精确调整输出发射功率电平。当不需要时，提供控制机制来关闭功率放大器或整个发射信号路径。控制发射信号路径中各种元件的增益以减少输出发射功率中的瞬变，并且还确保瞬态下降。

117. 发明公开

EP1932234A4 SYSTEM AND METHOD FOR INCREASING ACCURACY OF TRANSMITTER POWER DETECTION OVER A LARGER RANGE OF OUTPUT POWER LEVELS 有权
标题翻译：系统和方法增加发射功率电平的较大面积的发射功率的收养的准确性
公开(公告)号：EP1932234A4
公开(公告)日：2009-12-16
申请号：EP06801904
申请日：2006-08-21
申请人： CISCO TECH INC
发明人： GIATIS PETROS , JOHNSON GERALD B , SIMON JR FRANKLIN D , METSKER COREY
IPC分类号： H03F3/04 , H03F3/45 , H03F3/68
CPC分类号： H03G1/0088 , H03F1/34 , H03F3/211 , H03F3/24 , H03F3/45475 , H03F2200/105 , H03F2200/99

118. 发明公开

EP2122826A1 AMPLIFIER WITH INTEGRATED FILTER 审中-公开
标题翻译：具有集成滤波放大器
公开(公告)号：EP2122826A1
公开(公告)日：2009-11-25
申请号：EP08730295.6
申请日：2008-02-20
申请人： Qualcomm Incorporated
发明人： KIM, Tae Wook , KLEMENS, Guy , BARNETT, Kenneth Charles , SENGUPTA, Susanta , SAHOTA, Gurkanwal Singh
IPC分类号： H03F1/22 , H03F3/45 , H03F3/195 , H03F3/72 , H03G3/20 , H03G3/30 , H03H7/01 , H03H7/09
CPC分类号： H03F1/223 , H03F3/195 , H03F3/45188 , H03F3/45475 , H03F3/72 , H03F2200/168 , H03F2200/294 , H03F2200/451 , H03F2203/45034 , H03F2203/45058 , H03F2203/45138 , H03F2203/45296 , H03F2203/45301 , H03F2203/45316 , H03F2203/45396 , H03F2203/7239 , H03G1/0017 , H03G1/0029 , H03G1/0088 , H03G3/3052 , H03G3/3078
摘要： An amplifier with integrated filter (e.g., an LNA) is described. In one design, the amplifier may include a gain stage, a filter stage, and a buffer stage. The gain stage may provide signal amplification for an input signal. The filter stage may provide filtering for the input signal. The buffer stage may buffer a filtered signal from the filter stage. The amplifier may further include a second filter stage and a second buffer stage. The second filter stage may provide additional filtering for the input signal. The second buffer stage may buffer a second filtered signal from the second filter stage. All of the stages may be stacked and coupled between a supply voltage and circuit ground. The filter stage(s) may implement an elliptical lowpass filter. Each filter stage may include an inductor and a capacitor coupled in parallel and forming a resonator tank to attenuate interfering signals.

119. 发明公开

EP1976113A3 Variable gain amplifier and method for achieving variable gain amplification with high bandwidth and linearity 审中-公开
标题翻译：可变增益放大器，实现可变增益放大器具有高带宽和线性的方法
公开(公告)号：EP1976113A3
公开(公告)日：2009-09-02
申请号：EP07010403.9
申请日：2007-05-24
申请人： Broadcom Corporation
发明人： Kocaman, Namik
IPC分类号： H03G3/30
CPC分类号： H03G3/3084 , H03G1/0088
摘要： A fine granularity, wide-range variable gain amplifier ("VGA") comprises an attenuator, a high gain signal path, a low gain signal path and a gain adjustment control to adjust a gain of the VGA, wherein the gain adjustment control is configured to cause a selective activation of at least a portion of the low gain signal path or the high gain signal path to achieve a desired overall gain.

120. 发明授权

EP1928087B1 Variable gain amplifier circuit 有权
标题翻译：一个可变增益放大器的电路
公开(公告)号：EP1928087B1
公开(公告)日：2009-08-12
申请号：EP07020764.2
申请日：2007-10-24
申请人： Mitsumi Electric Co., Ltd.
发明人： Dobashi, Nagayoshi Mitsumi Electric Co.,Ltd. , Mabuchi, Shigeki Mitsumi Electric Co.,Ltd.
IPC分类号： H03G1/00 , H03F3/45 , H03F3/72
CPC分类号： H03G1/0023 , H03F3/45085 , H03F3/45475 , H03F3/72 , H03F2203/45138 , H03F2203/45506 , H03F2203/45528 , H03F2203/45652 , H03F2203/7231 , H03G1/0088

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