专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

21. 发明公开

EP2469706A3 Low noise CMOS transmitter circuit with high range of gain 审中-公开
标题翻译：具有高增益范围的低噪声CMOS传输电路
公开(公告)号：EP2469706A3
公开(公告)日：2012-08-08
申请号：EP12156934.7
申请日：2007-04-24
申请人： Icera Canada ULC
发明人： Bellaouar, Abdellatif , Frechette, Michel J.G.J.P
IPC分类号： H03F3/45 , H03F3/04 , H03G3/20 , H03F1/26 , H03F3/24 , H03G1/04 , H03F3/347
CPC分类号： H03G1/04 , H03F1/26 , H03F3/24 , H03F3/347 , H03F3/45071 , H03F2200/162 , H03F2200/447
摘要： The invention provides a method for controlling signal transmission gain in response to an input control signal comprising: a) receiving the input control signal; b) generating in response to temperature, a temperature compensated control voltage corresponding to the input control signal; c) linearizing the temperature compensated control voltage for generating a gain control voltage; and, d) controlling a gain circuit in sub-threshold in response to the gain control voltage.

22. 发明公开

EP2461479A1 Radio frequency circuit with impedance matching 有权
标题翻译： Funkfrequenzschaltung mit Impedanzanpassung
公开(公告)号：EP2461479A1
公开(公告)日：2012-06-06
申请号：EP10290632.8
申请日：2010-12-01
申请人： NXP B.V.
发明人： Andrei, Christian
IPC分类号： H03F1/56 , H03F1/26 , H03F3/195
CPC分类号： H03F1/565 , H03F1/26 , H03F3/195 , Y10T29/49155
摘要： A radio frequency (RF) circuit (e.g., 100, 200) is configured for impedance matching, such as for mitigating noise. In connection with an example embodiment, an RF circuit (e.g., 100) includes a transceiver (e.g., 200) in a substrate, and a conductive ring-type of material ( e.g ., 242, 244) in the substrate and around at least a portion of the transceiver circuit. An upper conductive ring material (e.g., 160, 260, 262) is over the substrate and separated from the conductive ring-type material by an insulating layer. The upper conductive ring material is configured to generate an inductance that matches input impedance characteristics of the transceiver circuit. In some implementations, the upper conductive ring material connects a gate input pin (e.g., 605) of the circuit with the gate ( e.g ., 630) of an input transistor of an amplifier in the transceiver, and exhibits an impedance that matches the impedance of the input transistor.
摘要翻译：射频（RF）电路（例如，100,200）被配置用于阻抗匹配，例如用于减轻噪声。结合示例性实施例，RF电路（例如，100）在衬底中包括收发器（例如，200）以及衬底中的导电环型材料（例如，242,244），并且至少围绕收发电路的一部分。上导电环材料（例如，160,260,262）在衬底之上并且通过绝缘层与导电环型材料分离。上导电环材料被配置为产生匹配收发器电路的输入阻抗特性的电感。在一些实现中，上导电环材料将电路的栅极输入引脚（例如，605）与收发器中的放大器的输入晶体管的栅极（例如，630）连接，并且具有与阻抗匹配的阻抗的输入晶体管。

23. 发明公开

EP2330735A3 Operational transconductance amplifier 审中-公开
标题翻译： OTA的
公开(公告)号：EP2330735A3
公开(公告)日：2012-04-04
申请号：EP11154277.5
申请日：2009-07-17
申请人： PEREGRINE SEMICONDUCTOR CORPORATION
发明人： Kim, Tae Youn , Englekirk, Robert Mark , Kelly, Dylan J.
IPC分类号： H03F3/45 , H03F1/26
CPC分类号： H03F1/26 , H02M3/07 , H03F3/45183 , H03F3/45237 , H03F3/45475 , H03F3/45659 , H03F2200/453 , H03F2200/456 , H03F2200/474 , H03F2203/45138 , H03F2203/45188 , H03F2203/45366 , H03F2203/45418 , H03F2203/45424 , H03F2203/45471 , H03F2203/45642 , H03H11/245 , H03K17/145
摘要： An integrated operational transconductance amplifier, OTA, having a variable-ratio current mirror differential amplifier section including:
having a differential pair of FETs including a transistor having a source coupled to a source of a second transistor and to an approximate current source, the two forming a differential input pair of FETs for the OTA, the corresponding drains of the input pair forming a pair of differential current branches;
having an output voltage connection Vo coupled to one of the differential current branches; and
having a variable ratio current mirror circuit (113,114,115), including:
having a current sensing circuit (114) conducting current from one of the differential current branches that generates a current control voltage reflective of the quantity of current thus conducted;
having a current mirror reflection circuit (115) that generates a current substantially reflective of the current control voltage in the other differential current branch; and
having a circuit, proportionally controllable by a signal (CMCV) applied to a mirror ratio control node within the OTA, which aids either conducting current of the current sensing circuit, or producing current reflective of the current control voltage, such that
a ratio between current conducted by the current sensing circuit and the current mirror reflection circuit is continuously variable over a range under control of the signal (CMCV) applied to the mirror ratio control node.

24. 发明授权

EP2148433B1 WIDE-RANGE LOW-NOISE AMPLIFIER 有权
标题翻译：低噪声宽范围放大
公开(公告)号：EP2148433B1
公开(公告)日：2011-08-17
申请号：EP08752875.8
申请日：2008-05-16
申请人： Nippon Telegraph and Telephone Corporation
发明人： KAWASHIMA, Munenari , YAMAGUCHI, You , UEHARA, Kazuhiro , NISHIKAWA, Kenjiro
IPC分类号： H03F1/26 , H03F1/34 , H03F3/189 , H03F3/19
CPC分类号： H03F1/34 , H03F1/26 , H03F1/42 , H03F1/56 , H03F3/19 , H03F2200/108 , H03F2200/144 , H03F2200/151 , H03F2200/222 , H03F2200/294 , H03F2200/36 , H03F2200/451
摘要： In a wide-range low-noise amplifier: an input terminal is connected to a base terminal of a first transistor, one end of a first passive element, and one end of a third passive element; an emitter terminal of the first transistor is grounded; a collector terminal of the first transistor is connected an output terminal, a base terminal of the second transistor, one end of a capacitance element, and one end of a second passive element; the other end of the first passive element is connected to the other end of the capacitance element; an emitter terminal of the second transistor is connected to the other end of the third passive element; and a power terminal is connected to a collector terminal of the second transistor and the other end of the second passive element. The amplifier decides an impedance of the third passive element in accordance with an impedance of the first transistor whose emitter size has been decided so as to be appropriate for a desired saturation level of the amplifier, thereby adjusting the input impedance.

25. 发明公开

EP2346169A2 Low-noise high efficiency bias generation circuits and method 审中-公开
标题翻译：低噪声高效率偏置发生电路和方法
公开(公告)号：EP2346169A2
公开(公告)日：2011-07-20
申请号：EP11154275.9
申请日：2009-07-17
申请人： PEREGRINE SEMICONDUCTOR CORPORATION
发明人： Kim, Tae Youn , Englekirk, Robert Mark , Kelly, Dylan J.
IPC分类号： H03K17/00
CPC分类号： H03F1/26 , H02M3/07 , H03F3/45183 , H03F3/45237 , H03F3/45475 , H03F3/45659 , H03F2200/453 , H03F2200/456 , H03F2200/474 , H03F2203/45138 , H03F2203/45188 , H03F2203/45366 , H03F2203/45418 , H03F2203/45424 , H03F2203/45471 , H03F2203/45642 , H03H11/245 , H03K17/145
摘要： A bias generation method or apparatus defined by any one or any practical combination of numerous features that contribute to low noise and/or high efficiency biasing, including: having a charge pump control clock output with a waveform having limited harmonic content or distortion compared to a sine wave; having a ring oscillator to generating a charge pump clock that includes inverters current limited by cascode devices and achieves substantially rail-to-rail output amplitude; having a differential ring oscillator with optional startup and/or phase locking features to produce two phase outputs suitably matched and in adequate phase opposition; having a ring oscillator of less than five stages generating a charge pump clock; capacitively coupling the clock output(s) to some or all of the charge transfer capacitor switches; biasing an FET, which is capacitively coupled to a drive signal, to a bias voltage via an "active bias resistor" circuit that conducts between output terminals only during portions of a waveform appearing between the terminals, and/or wherein the bias voltage is generated by switching a small capacitance at cycles of said waveform. A threshold voltage bias voltage generation circuit may A charge pump for the bias generation may include a regulating feedback loop including an OTA that is also suitable for other uses, the OTA having a ratio-control input that controls a current mirror ratio in a differential amplifier over a continuous range, and optionally has differential outputs including an inverting output produced by a second differential amplifier that optionally includes a variable ratio current mirror controlled by the same ratio-control input. The ratio-control input may therefore control a common mode voltage of the differential outputs of the OTA. A control loop around the OTA may be configured to control the ratio of one or more variable ratio current mirrors, which may particularly control the output common mode voltage, and may control it such that the inverting output level tracks the non-inverting output level to cause the amplifier to function as a high-gain integrator.
摘要翻译：由有助于低噪声和/或高效率偏置的众多特征中的任何一个或任何实际组合定义的偏置生成方法或装置包括：具有电荷泵控制时钟输出，其具有与具有有限谐波含量或失真的波形相比正弦波; 具有用于产生电荷泵时钟的环形振荡器，所述电荷泵时钟包括由共源共栅器件限制的电流的逆变器并且实质上实现轨到轨输出幅度; 具有差分环形振荡器，其具有可选的启动和/或锁相特征以产生适当匹配且处于适当反相的两相输出; 具有产生电荷泵时钟的小于五级的环形振荡器; 将时钟输出电容耦合到一些或全部电荷转移电容器开关; 和/或其中产生偏置电压的偏置电压经由仅在出现在端子之间的波形的部分期间在输出端子之间导通的“有源偏置电阻器”电路来偏置与驱动信号电容耦合的FET到偏置电压通过在所述波形的周期切换小电容。阈值电压偏置电压产生电路可以用于偏置产生的电荷泵可以包括调节反馈环路，该调节反馈环路包括也适用于其他用途的OTA，该OTA具有比率控制输入，该比例控制输入控制差分放大器中的电流镜像比并且可选地具有包括由第二差分放大器产生的反相输出的差分输出，所述第二差分放大器可选地包括由相同比率控制输入控制的可变比率电流镜。比率控制输入因此可以控制OTA的差分输出的共模电压。围绕OTA的控制回路可以被配置为控制一个或多个可变比率电流镜的比率，其可以特别地控制输出共模电压，并且可以控制它以使得反相输出电平跟踪非反相输出电平到使放大器起到高增益积分器的作用。

26. 发明授权

EP1447908B1 POWER AMPLIFIER 有权
标题翻译：功率放大器
公开(公告)号：EP1447908B1
公开(公告)日：2011-03-16
申请号：EP02775506.5
申请日：2002-11-07
申请人： Sony Corporation
发明人： MASUDA, Toshihiko c/o SONY CORPORATION , OHKURI, Kazunobu c/o SONY CORPORATION
IPC分类号： H03F3/217
CPC分类号： H03F1/26 , H03F3/217 , H03F3/2173 , H03F3/3027 , H03F2200/331
摘要： A power amplifier for reducing radiation arising from the edge of an output voltage. The amplifier is provided with a pair of PWM modulation circuits (11, 12) to be supplied with an input signal, a pair of push-pull circuits (15, 16),and drive circuits (13, 14) which supply the output of the PWM modulation circuits (11, 12) as a drive signal to the push-pull circuits (15, 16). A loudspeaker (19) is connected between the output end of the push-pull circuit (15) and the output end of the push-pull circuit (16). The drive circuits (13, 14) are switched every cycle of a pulse modulation signal so that the drive signal to be supplied to the push-pull circuits (15, 16) may not change to a break point of every cycle of the pulse modulation signal.
摘要翻译：一种功率放大器，用于减少由输出电压边缘引起的辐射。该放大器具备供给输入信号的一对PWM调制电路（11,12），一对推挽电路（15,16）和驱动电路（13,14），该一对推挽电路 PWM调制电路（11,12）作为推挽电路（15,16）的驱动信号。扬声器（19）连接在推挽电路（15）的输出端和推挽电路（16）的输出端之间。驱动电路（13,14）在脉冲调制信号的每个周期被切换，使得要提供给推挽电路（15,16）的驱动信号可以不改变为脉冲调制的每个周期的中断点信号。

27. 发明公开

EP1590905A4 SIGNAL PROCESSING SYSTEM WITH BASEBAND NOISE MODULATION AND NOISE FOLD BACK REDUCTION 有权
标题翻译：与基带噪声调制和降噪FOLDBACK信号处理系统
公开(公告)号：EP1590905A4
公开(公告)日：2011-01-12
申请号：EP04704054
申请日：2004-01-21
申请人： CIRRUS LOGIC INC
发明人： PLISCH MARJORIE R , MELANSON JOHN L , HODAPP STEPHEN T , RANGAN GIRI N K
IPC分类号： H03F1/02 , H03F1/26 , H03F3/21 , H03F3/217 , H03F3/38 , H03M3/04 , H04B14/06
CPC分类号： H03M3/34 , H03F1/02 , H03F1/26 , H03F3/211 , H03F3/217 , H03F3/2175 , H03F3/38 , H03F2200/331 , H03M3/50

28. 发明公开

EP2016675A4 CMOS TEMPERATURE COMPENSATED TRANSMITTER CIRCUIT WITH MERGED MIXER AND VARIABLE GAIN AMPLIFIER 有权转让
标题翻译：用旋转CMOS温度补偿的发射器电路倒塌可变增益放大器
公开(公告)号：EP2016675A4
公开(公告)日：2010-08-04
申请号：EP07719624
申请日：2007-04-24
申请人： ICERA CANADA ULC
发明人： BELLAOUAR ABDELLATIF , FRECHETTE MICHEL J G J P
IPC分类号： H03F3/45 , H03F3/04 , H03G3/20 , H04B1/26
CPC分类号： H03G1/04 , H03F1/26 , H03F3/24 , H03F3/347 , H03F3/45071 , H03F2200/162 , H03F2200/447

29. 发明授权

EP2005580B1 A METHOD FOR COMPENSATING SIGNAL DISTORTIONS IN COMPOSITE AMPLIFIERS 有权
标题翻译：方法的信号失真在复合放大器补偿
公开(公告)号：EP2005580B1
公开(公告)日：2010-07-07
申请号：EP06717146.2
申请日：2006-04-10
申请人： Telefonaktiebolaget LM Ericsson (publ)
发明人： FONDÉN, Tony , HELLBERG, Richard , KLINGBERG, Mats , DALIPI, Spendim
IPC分类号： H03F1/32
CPC分类号： H03F1/26 , H03F1/0288 , H03F1/0294 , H03F1/3247 , H03F1/3252 , H03F1/3294 , H03F2200/228 , H03F2200/321 , H03F2200/336 , H03F2200/393 , H03F2200/78
摘要： A method for compensating signal distortions in multiple transmitting branches (3, 5; 43, 45, 46) entering a composite amplifier ( 1; 1'). According to the invention the method comprises the steps of: - providing (S l ) one or more input signals (x) to the composite amplifier. - observing (S2) an output signal (z) from the composite amplifier ( 1; 1') for each provided input signal; - deriving (S5) an error in each output signal (z) by comparing the output signal with an ideal output signal, said error being caused by said signal distortions; - deriving (S 11) the individual contribution from each transmitting branch (3, 5; 43,45,46) to the error by utilising a composite amplifier model, said composite amplifier model comprising information about the contribution from each constituent amplifier (23, 25; 103a,103b,103c) to the output signal for each provided input signal: - compensating the signal distortions in the transmitting branches (3, 5; 43,45,46) accordingly.

30. 发明公开

EP2195926A2 TUNABLE RF FILTER 审中-公开
标题翻译：可调RF滤波器
公开(公告)号：EP2195926A2
公开(公告)日：2010-06-16
申请号：EP08807652.6
申请日：2008-09-15
申请人： NXP B.V.
发明人： BOUHAMAME, Mohamed , LOCOCO, Luca , ROBERT, Sebastien
IPC分类号： H03H11/12 , H03F1/34 , H03F3/50 , H03F3/195
CPC分类号： H03F3/50 , H03F1/26 , H03F1/32 , H03F1/34 , H03F1/56 , H03F3/195 , H03F3/45475 , H03F2200/144 , H03F2200/213 , H03F2200/378 , H03F2200/408 , H03F2200/411 , H03F2200/435 , H03F2200/451 , H03F2203/45136 , H03F2203/45522 , H03F2203/5006 , H03F2203/5021 , H03F2203/5024 , H03F2203/5031 , H03F2203/5036 , H03F2203/5039 , H03G5/14 , H03H11/1213 , H03H11/1291
摘要： A tunable RF filter, comprising: an emitter follower stage (2); and a common emitter stage (4); the common emitter stage (4) providing feedback to the emitter follower stage (2). The common emitter stage (4) may comprise a first transistor (Ti) being the only transistor of the common emitter stage (4); and the emitter follower stage (2) may comprise a second transistor (T2) being the only transistor of the emitter follower stage (2). A further tunable RF filter provides improved linearity, comprising: an emitter follower stage (22); a joint common emitter and emitter follower stage (24); and a gain stage (26); a common emitter output of the joint common emitter and emitter follower stage (24) providing feedback to the emitter follower stage (22), and an emitter follower output of the joint common emitter and emitter follower stage (24) providing an input to the gain stage (26).

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式