专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明申请

WO2013098639A1 BANDWIDTH-EXTENDED DOHERTY POWER AMPLIFIER 审中-公开
标题翻译： BANDWIDTH扩展DOHERTY功率放大器
公开(公告)号：WO2013098639A1
公开(公告)日：2013-07-04
申请号：PCT/IB2012/002864
申请日：2012-12-12
申请人： ALCATEL LUCENT
发明人： YANG, Yang. J. , LIU, Lintao, A. , GUO, Xianguang , JIN, Kaijie , YANG, Zhengde, A. , ZHONG, Qiu, A.
IPC分类号： H03F1/02
CPC分类号： H03F3/19 , H03F1/0288 , H03F1/07 , H03F1/48 , H03F3/211 , H03F3/68 , H03F2200/36 , H03F2203/21106 , H03F2203/21139
摘要： The present invention provides a new structure of Doherty power amplifier. The present invention reduces use of 1/4 wavelength lines and lowers the Q point of the Doherty power amplifier. The present method extends the DPA bandwidth with a simpler and more convenient design and facilitates the design of a narrowed size.
摘要翻译：本发明提供了Doherty功率放大器的新结构。本发明减少了1/4波长线的使用，降低了Doherty功率放大器的Q点。本方法利用更简单和更方便的设计来扩展DPA带宽，并且有助于缩小尺寸的设计。

2. 发明申请

WO2006127855A3 FAST SETTING, LOW NOISE, LOW OFFSET OPERATIONAL AMPLIFIER AND METHOD 审中-公开
标题翻译：快速设置，低噪声，低偏移运算放大器和方法
公开(公告)号：WO2006127855A3
公开(公告)日：2007-01-25
申请号：PCT/US2006020161
申请日：2006-05-24
申请人： TEXAS INSTRUMENTS INC , ALENIN SERGEY V , SURTIHADI HENRY
发明人： ALENIN SERGEY V , SURTIHADI HENRY
IPC分类号： H03F3/45
CPC分类号： H03F3/45085 , H03F1/48 , H03F2203/45014 , H03F2203/45086 , H03F2203/45248 , H03F2203/45431 , H03F2203/45441 , H03F2203/45632 , H03F2203/45642 , H03F2203/45646 , H03F2203/45652 , H03F2203/45712
摘要： An amplifier (10) includes a first stage (4) including differentially coupled first and second input transistors and a controlled active load circuit. A second stage (8) includes differentially coupled third and fourth input transistors and a load circuit. A first output (2A) of the first stage is coupled to a first input of the second stage, a second output (2B) of the first stage being coupled to a second input of the second stage. A common mode feedback amplifier (12) has an input coupled to receive a common mode signal (3) from the second stage for producing an amplified common mode signal (9) on a control input of the controlled active load circuit to provide fast settling of an output (V out ) of the second stage without substantially increasing amplifier noise.
摘要翻译：放大器（10）包括包括差分耦合的第一和第二输入晶体管和受控有源负载电路的第一级（4）。第二级（8）包括差分耦合的第三和第四输入晶体管和负载电路。第一级的第一输出（2A）耦合到第二级的第一输入，第一级的第二输出（2B）耦合到第二级的第二输入。共模反馈放大器（12）具有耦合以从第二级接收共模信号（3）的输入，用于在受控有源负载电路的控制输入上产生放大的共模信号（9），以提供快速稳定第二级的输出（V OUT输出），而基本上不增加放大器噪声。

3. 发明申请

WO1986005930A1 BROAD BAND SIGNAL AMPLIFIER 审中-公开
标题翻译：宽带信号放大器
公开(公告)号：WO1986005930A1
公开(公告)日：1986-10-09
申请号：PCT/DE1986000142
申请日：1986-03-27
申请人： CREATEC GESELLSCHAFT FÜR ELEKTROTECHNIK MBH , KOSLAR, Manfred
发明人： CREATEC GESELLSCHAFT FÜR ELEKTROTECHNIK MBH
IPC分类号： H03F01/48
CPC分类号： H03F3/3076 , H03F1/48
摘要： A multiple-stage, direct current-coupled signal amplifier with transistors of various types of conductivity, in particular for amplification of the analogue entry signal in an oscilloscope, whereby each of the amplification stages has paired symmetrical transistors of different conductivity type between the supply potentials of different polarity, which receive and process the complete wanted signal in the same phase condition. The respective sequential transistors, which are connected with a supply potential of the same polarity, are also of different conductivity types. The entry phase is designed as an emitter sequence. The successive stages have a cascade circuit, or in other words, they form successive stages in the emitter and base circuits.

4. 发明申请

WO2007048007A2 WIDEBAND CIRCUITS AND METHODS 审中-公开
标题翻译：宽带电路和方法
公开(公告)号：WO2007048007A2
公开(公告)日：2007-04-26
申请号：PCT/US2006041187
申请日：2006-10-20
申请人： WILINX INC , BAGHERI MAHDI , BAGHERI RAHIM , ROSTAMI EDRIS , KOMIJANI ABBAS , MIRZAEI AHMAD , DJAFARI MASOUD
发明人： BAGHERI MAHDI , BAGHERI RAHIM , ROSTAMI EDRIS , KOMIJANI ABBAS , MIRZAEI AHMAD , DJAFARI MASOUD
IPC分类号： H03F3/191
CPC分类号： H03F1/48 , H03F3/191 , H03F3/45179 , H03F3/45475 , H03F2200/168 , H03F2200/36 , H03F2203/45302 , H03F2203/45318 , H03F2203/45342 , H03F2203/45354
摘要： Embodiments of the present invention include circuits and methods with wide bandwidths. In one embodiment, parasitic capacitances of the output of a first stage and the input of a second stage are included in a network. The output of the first stage is coupled to the input of the network, and the input of the second stage is coupled to an intermediate node of the network. In one embodiment, the parasitic capacitance of the second stage is the largest capacitance in the network. In another embodiment, passive networks are coupled to the outputs of a stage, and one or more current injection circuits may be used to extend the bandwidth of the circuit.
摘要翻译：本发明的实施例包括具有宽带宽的电路和方法。在一个实施例中，第一级的输出和第二级的输入的寄生电容包括在网络中。第一级的输出耦合到网络的输入，并且第二级的输入耦合到网络的中间节点。在一个实施例中，第二级的寄生电容是网络中最大的电容。在另一个实施例中，无源网络耦合到级的输出，并且可以使用一个或多个电流注入电路来扩展电路的带宽。

5. 发明申请

WO2007003170A1 SCHALTUNGSANORDNUNG MIT NIEDRIGER TRANSKONDUKTANZ 审中-公开
标题翻译：具有低跨导电路
公开(公告)号：WO2007003170A1
公开(公告)日：2007-01-11
申请号：PCT/DE2006/001132
申请日：2006-06-30
申请人： UNIVERSITÄT MANNHEIM , FISCHER, Peter
发明人： FISCHER, Peter
IPC分类号： H03F3/45 , H03F1/32 , H03F1/48 , G05F3/26
CPC分类号： H03F3/45103 , H03F1/3211 , H03F1/48 , H03F3/4508 , H03F3/45089 , H03F3/45179 , H03F3/45188 , H03F3/45201 , H03F2200/36 , H03F2203/45674
摘要： Die vorliegende Erfindung betrifft eine Schaltungsanordnung mit niedriger Transkondukt anz, die zumindest einen ersten, in Sättigung betriebenen Transistor (1, 2) mit einem Drain- oder Kollektor- Strom und eine mit dem ersten Transistor (I7 2) verbundene' Eingangsschaltung (3, 4) umfasst. Die Eingangsschaltung (3, 4) ist so ausgebildet, dass eine Änderung einer an der Eingangsschaltung (3, 4) anliegenden Eingangs- Spannung eine Änderung der Drain- oder Kollektor- Spannung des ersten Transistors (1, 2) bewirkt, von der ein Ausgangsstrom der Schaltungsanordnung gebildet oder abgeleitet wird. Mit der vorliegenden Schaltungsanordnung lassen sich sehr niedrige Transkonduktanzen in einem weiten Eingangs Spannungsbereich bei geringem Platzbedarf für die Schaltung erreichen.
摘要翻译：本发明涉及一种具有低Transkondukt ANZ，所述至少一个第一，在饱和晶体管操作（1,2）连接到漏极或集电极电流和到所述第一晶体管（I7 2）“输入电路（3,4的电路装置）包括。形成有输入电路（3,4），使得在所述输入电路的变化（3,4）施加的输入电压，在所述第一晶体管的漏极或集电极的电压的变化（1,2）引起的输出电流该电路装置上形成或衍生。本电路装置，在一个宽输入电压范围非常低的跨导可与电路低空间需求来实现。

6. 发明申请

WO1996036106A2 FEEDBACK AMPLIFIER WITH IMPROVED SPEED AND ACCURACY 审中-公开
标题翻译：反馈放大器具有改进的速度和精度
公开(公告)号：WO1996036106A2
公开(公告)日：1996-11-14
申请号：PCT/IB1996000299
申请日：1996-04-10
申请人： PHILIPS ELECTRONICS N.V. , PHILIPS NORDEN AB
发明人： PHILIPS ELECTRONICS N.V. , PHILIPS NORDEN AB , FONDERIE, Maarten, J. , TOY, Edmond
IPC分类号： H03F01/34
CPC分类号： H03F1/48 , H03F3/45071
摘要： A feedback amplifier with improved speed and accuracy when the primary feedback around the amplifier configuration has been interrupted is provided. An additional feedback loop (Q2b) added to the input stage (IS) of the amplifier maintains the circuit response by preventing the interruption of the feedback and the saturation of the circuit components.
摘要翻译：提供了当放大器配置周围的主反馈被中断时，具有改进的速度和精度的反馈放大器。添加到放大器的输入级（IS）的附加反馈回路（Q2b）通过防止反馈的中断和电路部件的饱和来维持电路响应。

7. 发明申请

WO1995022198A1 LOW NOISE WIDE BAND AMPLIFIER 审中-公开
标题翻译：低噪音宽带放大器
公开(公告)号：WO1995022198A1
公开(公告)日：1995-08-17
申请号：PCT/US1995001390
申请日：1995-02-08
申请人： PSC, INC.
发明人： PSC, INC. , COLEMAN, Edward, P.
IPC分类号： H03F01/36
CPC分类号： H03F1/48 , H03F1/083 , H03F3/195 , H03F2200/372 , H03H11/1217 , H03H11/126
摘要： An amplifier circuit provides wide bandwidth low noise performance by minimizing the effect of a pole created by the feedback resistor (424) and the capacitance of the input device, such as a photodiode (10). This is accomplished by shifting the dominant pole to higher frequencies in the amplifier. A first amplifier stage (402) receives a signal from an input device (10) and feedback from a second amplifier stage (403). The first stage (402) is connected to the second stage (403) such that a lower gain stage is employed to eliminate the phase shift that would occur if the amplifier alone were used in open loop form. The output of the lower gain stage is provided to the second gain stage (403) with associated gain setting components (422, 424, 426) such that the dominant pole of the overall amplifier is shifted higher, typically by two decades.
摘要翻译：放大器电路通过最小化由反馈电阻器（424）产生的极点和诸如光电二极管（10）的输入设备的电容的影响来提供宽带宽的低噪声性能。这是通过将主极转移到放大器中的较高频率来实现的。第一放大器级（402）从输入装置（10）接收信号并从第二放大级（403）接收反馈信号。第一级（402）连接到第二级（403），使得采用较低增益级以消除仅在放大器单独使用开环形式时将发生的相移。较低增益级的输出通过相关联的增益设置组件（422,424,426）提供给第二增益级（403），使得整个放大器的主极通常更高，通常为二十年。

8. 发明申请

WO2017034734A1 COMMON-MODE COMPENSATION TECHNIQUE FOR PROGRAMMABLE GAIN AMPLIFIERS 审中-公开
标题翻译：可编程增益放大器的共模补偿技术
公开(公告)号：WO2017034734A1
公开(公告)日：2017-03-02
申请号：PCT/US2016/044064
申请日：2016-07-26
申请人： QUALCOMM INCORPORATED
发明人： KANAGAL RAMESH, Srinidhi Koushik , HUANG, Wenchang , AZIN, Meysam
IPC分类号： H03F3/30 , H03F3/45
CPC分类号： H03G3/3005 , H03F1/0272 , H03F1/48 , H03F3/185 , H03F3/3011 , H03F3/45475 , H03F3/45941 , H03F2200/03 , H03F2200/36 , H03F2203/30031 , H03F2203/45074 , H03F2203/45082 , H03F2203/45418 , H03F2203/45424 , H03F2203/45434 , H03F2203/45512 , H03F2203/45528 , H03F2203/45534 , H03F2203/45536 , H03F2203/45544 , H03G3/001 , H03G5/28
摘要： Certain aspects of the present disclosure provide methods and apparatus for adjusting a bandwidth of an amplifier (e.g., a programmable gain amplifier (PGA)). In certain aspects, the PGA generally includes at least one amplification stage (320) having an input (301) and an output (303), a plurality of compensation capacitors (C c0 , C c1 , C c2 ) and at least one first switch (304, 306) configured to selectively couple at least one capacitor of the plurality of compensation capacitors between the input and the output of the at least one amplification stage. The amplifier includes at least one second switch (308, 310) configured to selectively couple the at least one capacitor to a node (CM sense) such that the at least one capacitor is coupled to only one of the output or the node, where a voltage at the node is a differential mode (DM) reference potential for the amplification stage.
摘要翻译：本公开的某些方面提供了用于调整放大器（例如，可编程增益放大器（PGA））的带宽的方法和装置。在某些方面，PGA通常包括至少一个具有输入（301）和输出（303）的放大级（320），多个补偿电容器（Cc0，Cc1，Cc2）和至少一个第一开关（304， 306），被配置为在所述至少一个放大级的输入和输出之间选择性地耦合所述多个补偿电容器中的至少一个电容器。放大器包括被配置为选择性地将至少一个电容器耦合到节点（CM sense）的至少一个第二开关（308,310），使得至少一个电容器仅耦合到输出或节点中的一个，其中a 节点处的电压是放大级的差分模式（DM）参考电位。

9. 发明申请

WO2003019934A1 ADAPTIVE BANDWIDTH CONTROL IN A KINESCOPE AMPLIFIER 审中-公开
标题翻译：自适应放大器中的自适应带宽控制
公开(公告)号：WO2003019934A1
公开(公告)日：2003-03-06
申请号：PCT/EP2002/009292
申请日：2002-08-20
申请人： THOMSON LICENSING S.A. , KELLER, Anton, Werner
发明人： KELLER, Anton, Werner
IPC分类号： H04N5/14
CPC分类号： H03G1/0023 , H03F1/0266 , H03F1/48 , H03F1/486 , H03F3/19 , H03F3/3069 , H04N5/148
摘要： A method for controlling dissipation in a video amplifier (200) for a display signal (Vin). The method comprises the steps of setting a first current for establishing a first gain bandwidth product in the video amplifier (200). Generating a control signal (CS) in accordance with a slew rate of the display signal (Vin). Modifying the first current responsive to the control signal (CS) such that the video amplifier gain bandwidth product is controlled in accordance with the slew rate of said display signal (Vin).
摘要翻译：一种用于控制用于显示信号（Vin）的视频放大器（200）中的耗散的方法。该方法包括以下步骤：设置用于在视频放大器（200）中建立第一增益带宽乘积的第一电流。根据显示信号（Vin）的转换速率产生控制信号（CS）。响应于控制信号（CS）修改第一电流，使得根据所述显示信号（Vin）的转换速率来控制视频放大器增益带宽乘积。

10. 发明申请

WO1992005632A1 HIGH GAIN BANDPASS FILTER 审中-公开
标题翻译：高增益滤波器
公开(公告)号：WO1992005632A1
公开(公告)日：1992-04-02
申请号：PCT/CA1990000295
申请日：1990-09-17
申请人： CORREPRO (CANADA) INC.
发明人： CORREPRO (CANADA) INC. , MILLEN, Ted, I.
IPC分类号： H03H11/12
CPC分类号： H03H11/1295 , H03F1/48
摘要： The present application relates to an active bandpass amplifier comprising a single stage operational amplifier (2), a bridged "T" network (6) single frequency elimination filter in the negative feedback path of the amplifier and a phase shift correcting capacitor (Cx) associated with the bridged "T" network single frequency elimination filter to effect a phase shift sufficient to maintain an appropriate feedback such that the amplifier is stable. The bridged "T" network single frequency elimination filter in conjunction with the circuit capacities and phase shifts in the integrated circuits introduces a phase shift which would result in the amplifier oscillating when the network is placed in the feedback path and the corrective capacitor effects a corrective phase shift to render the amplifier stable. Such a bandpass amplifier allows high gain and high "Q" and the gain is many times higher than that of a conventional single stage amplifier where gain is typically limited to approximately 5 and the "Q" is limited to about 25. In the present case, this bandpass amplifier is capable of gains of greater than 10 and substantially higher "Q". Such an amplifier is advantageously used in a receiver and in a signalling system. The high gain capability of the receiver is particularly advantageous in a mining environment where the receiver can be used as part of a signalling system.
摘要翻译：本申请涉及一种有源带通放大器，其包括在放大器的负反馈路径中的单级运算放大器（2），桥接“T”网络（6）单消频滤波器和相关的相移校正电容器（Cx）与桥接的“T”网络单频消除滤波器进行相移以足以保持适当的反馈，使得放大器稳定。桥接的“T”型网络单频消除滤波器与集成电路中的电路容量和相移一起引入了相移，当相位放置在反馈路径中时，放大器会产生振荡，校正电容器会产生校正相移使放大器稳定。这样的带通放大器允许高增益和高“Q”，并且增益比常规单级放大器的增益高出许多倍，其中增益通常被限制为大约5，并且“Q”被限制为大约25.在本例中，该带通放大器能够获得大于10的增益并且显着高于“Q”。这种放大器有利地用于接收机和信令系统中。接收机的高增益能力在接收机可以用作信令系统的一部分的采矿环境中特别有利。

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