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. 发明申请

WO2006019606A2 AUXILIARY TRANSISTOR GATE BIAS CONTROL SYSTEM AND METHOD 审中-公开
标题翻译：辅助晶闸管偏置控制系统及方法
公开(公告)号：WO2006019606A2
公开(公告)日：2006-02-23
申请号：PCT/US2005/024180
申请日：2005-07-11
申请人： POWERWAVE TECHNOLOGIES, INC. , VEITSCHEGGER, William, Kerr
发明人： VEITSCHEGGER, William, Kerr
IPC分类号： H03G3/10
CPC分类号： H03G3/3036 , H03F1/0288 , H03F1/30 , H03F3/602 , H03F2200/198
摘要： A circuit and method for modulating the gate bias voltage of a FET transistor (108) in an RF amplifier is disclosed. This circuit is used to dynamically control the gate bias of the auxiliary transistor (12) in a Doherty amplifier. The gate bias voltage is modulated so that it tracks the input signal amplitude. Dynamically modulating the gate bias of the auxiliary transistor in the Doherty amplifier improves the peak power and linearity, while maintaining good efficiency.
摘要翻译：公开了用于调制RF放大器中FET晶体管（108）的栅极偏置电压的电路和方法。该电路用于动态地控制Doherty放大器中的辅助晶体管（12）的栅极偏置。调制栅极偏置电压，使其跟踪输入信号幅度。在Doherty放大器中动态调制辅助晶体管的栅极偏置可以提高峰值功率和线性度，同时保持良好的效率。

22. 发明申请

WO2003038995A1 BALANCED POWER AMPLIFIER WITH A BYPASS STRUCTURE 审中-公开
标题翻译：具有旁路结构的平衡功率放大器
公开(公告)号：WO2003038995A1
公开(公告)日：2003-05-08
申请号：PCT/US2002/034803
申请日：2002-10-29
申请人： QUALCOMM INCORPORATED
发明人： KLAREN, Jonathan , PERSICO, Charles, J. , WALTER, Scott , CHAN, Paul, L.
IPC分类号： H03F3/72
CPC分类号： H03F3/602 , H03F3/72 , H03F2200/198
摘要： A balanced power amplifier circuit arrangement comprises a driver amplifier stage (22) adapted to receive and amplify a signal. The amplified signal is input to a first coupler (26). The first coupler (26) produces an in-phase signal and an out-of-phase quadrature signal. A first power amplifier (38) receives and amplifies the in-phase signal. A second power amplifier (40) receives and amplifies the out-of-phase signal. A first switch (28) alternately connects an isolated port of the first coupler to ground (32) or a bypass path (36). A second coupler (42) receives and combines the amplified in-phase signal and the amplified out-of-phase signal to produce a combined signal. A second switch (30) alternately connects an isolated port of the second coupler (42) to either ground (34) or the bypass path (36). When the power amplifiers (38, 40) are powered down, the first coupler (26) splits the RF-signal into an in-phase signal and an out-of-phase signal. The power amplifiers (38, 40) appear as reflective impedances to the signal when they are powered down. Each signal reflects off the first and second power amplifiers (38, 40), respectively. The first coupler (26) combines the reflected signals and routes the combined signal through the bypass path (36) to the second coupler (42). The second coupler (42) splits the signal into an in-phase and out-of-phase signal and routes each to the power amplifiers (38, 40). The power amplifiers (38, 40) reflect each signal back to the second coupler (42). The second coupler (42) combines the signals and routes the combined signal to the RF-output port. The circuit arrangement enables the integration of the balanced amplifier and first and second couplers (26, 42) into a single power amplifier package to provide low power bypassing without the need of an external circulator component.
摘要翻译：平衡功率放大器电路装置包括适于接收和放大信号的驱动放大器级（22）。放大的信号被输入到第一耦合器（26）。第一耦合器（26）产生同相信号和异相正交信号。第一功率放大器（38）接收并放大同相信号。第二功率放大器（40）接收并放大异相信号。第一开关（28）将第一耦合器的隔离端口交替地连接到地（32）或旁路路径（36）。第二耦合器（42）接收并组合放大的同相信号和放大的异相信号以产生组合信号。第二开关（30）将第二耦合器（42）的隔离端口交替地连接到接地（34）或旁路路径（36）。当功率放大器（38,40）断电时，第一耦合器（26）将RF信号分为同相信号和异相信号。当功率放大器断电时，功率放大器（38,40）显示为信号的反射阻抗。每个信号分别反射第一和第二功率放大器（38,40）。第一耦合器（26）组合反射信号并将组合的信号通过旁通路径（36）传送到第二耦合器（42）。第二耦合器（42）将信号分离成同相和异相信号，并将每个信号路由到功率放大器（38,40）。功率放大器（38,40）将每个信号反射回第二耦合器（42）。第二耦合器（42）组合信号并将组合信号路由到RF输出端口。该电路装置能够将平衡放大器和第一和第二耦合器（26,42）集成到单个功率放大器封装中，以提供低功率旁路，而不需要外部循环器组件。

23. 发明申请

WO2003015264A1 DISPOSITIF D'AMPLIFICATION D'UN SIGNAL HAUTE FREQUENCE 审中-公开
标题翻译：用于放大高频信号的装置
公开(公告)号：WO2003015264A1
公开(公告)日：2003-02-20
申请号：PCT/FR2002/002685
申请日：2002-07-26
申请人： THALES , LANGLOIS, Michel
发明人： LANGLOIS, Michel
IPC分类号： H03F5/00
CPC分类号： H01J23/033 , H01J25/04 , H03F3/24 , H03F2200/198
摘要： L'invention se rapporte à un dispositif d'amplification d'un signal haute fréquence. L'invention est particulièrement adaptée pour l'émission de signaux radiofréquence utilisés pour la télévision ou la radio en modulation de fréquence. Le dispositif d'amplification d'un signal haute fréquence comporte deux étages d'amplification disposes en série, le premier étage d'amplification étant forme d'un préamplificateur à semi-conducteur (200), le second étage d'amplification étant formé d'un tube (100) électronique refroidi par la circulation d'un fluide, le tube électronique (100) étant dispose à l'intérieur d'une enceinte (401) destinée à le recevoir. Le préamplificateur à semi-conducteur (200) est disposé dans l'enceinte (401) et le préamplificateur (200) est refroidi par la circulation du fluide. Le tube électronique (100) comporte un collecteur (15) nécessitant d'être refroidi par la circulation du fluide, et le fluide circule dans un circuit de refroidissement, circuit dans lequel le collecteur (15) est raccorde en parallèle du préamplificateur (200).
摘要翻译：本发明涉及用于放大高频信号的装置。本发明特别适用于在频率调制中传输用于电视或无线电的射频信号。高频信号放大装置包括串联布置的两个放大级，由半导体前置放大器（200）组成的第一放大级，由流体循环冷却的电子管（100）组成的第二放大级，电子管（100 ）被布置在设计用于其接收的外壳（401）内。半导体前置放大器（200）布置在外壳（401）的内部，前置放大器（200）被流体循环冷却。电子管（100）包括需要通过流体循环冷却的歧管（15），并且流体在冷却回路中流动，其中歧管（15）与前置放大器（200）并联连接。

24. 发明申请

WO0180420A3 AMPLIFIER CIRCUIT 审中-公开
标题翻译：放大器电路
公开(公告)号：WO0180420A3
公开(公告)日：2002-07-04
申请号：PCT/US0111873
申请日：2001-04-11
申请人： RAYTHEON CO
发明人： ALLEY GARY D
IPC分类号： H03F3/60 , H03F1/02 , H03F1/07 , H03F3/213 , H03F3/68
CPC分类号： H03F1/0288 , H03F2200/198
摘要： An RF amplifier includes a peak amplifier signal path, a carrier amplifier signal path and a delay line which equalizes the time delay between the peak and carrier amplifier signal paths to provide an amplifier having a relatively high power added efficiency characteristic.
摘要翻译： RF放大器包括峰值放大器信号路径，载波放大器信号路径和延迟线，其平衡峰值和载波放大器信号路径之间的时间延迟，以提供具有相对高的功率附加效率特性的放大器。

25. 发明申请

WO02009276A1 RF SIGNAL AMPLIFIER UNIT, RF SIGNAL TRANSMISSION DEVICE AND RF SIGNAL TRANSMITTING TERMINAL-ANTENNA 审中-公开
标题翻译：射频信号放大器单元，射频信号发射装置和射频信号发射终端天线
公开(公告)号：WO02009276A1
公开(公告)日：2002-01-31
申请号：PCT/FR2001/002197
申请日：2001-07-09
IPC分类号： H03F3/60 , H03F3/68 , H03F3/72 , H04B1/04
CPC分类号： H03F3/72 , H03F2200/198
摘要： The invention concerns a RF signal amplifier unit receiving a first RF signal (RFin), and comprising means for amplifying (3, 4, 12, 15) said first RF signal to deliver a second amplified RF signal (RF1). Said signal (RF1) must be amplified by a predetermined nominal power (Pout) to be delivered at the unit output. The invention is characterised in that the unit comprises means for measuring (7) the power of the second amplified RF signal (RF1), means for coupling (5, 16) the amplified RF signal towards a first output (S1) of the unit, a control signal (Sc) generated by a central unit (8) for controlling the coupling means on the basis of a comparison between the power of the amplified RF signal and a nominal power value (Pout). The invention also concerns a RF transmitting device designed to be arranged at the focal point of RF signal focusing means comprising said amplifier unit and a RF signal transmitting terminal-antenna. The invention is applicable to moving satellite tracking.
摘要翻译：本发明涉及一种接收第一RF信号（RFin）的RF信号放大器单元，并且包括用于放大（3,4,12,15）所述第一RF信号以递送第二放大RF信号（RF1）的装置。所述信号（RF1）必须被放大预定的标称功率（Pout）以便在单元输出端传送。本发明的特征在于，该单元包括用于测量（7）第二放大RF信号（RF1）的功率的装置，用于将放大的RF信号朝向该单元的第一输出（S1）耦合（5,16）的装置，由中央单元（8）产生的用于根据放大的RF信号的功率与标称功率值（Pout）之间的比较来控制耦合装置的控制信号（Sc）。本发明还涉及被设计为布置在包括所述放大器单元和RF信号发射终端天线的RF信号聚焦装置的焦点处的RF发送装置。本发明适用于移动卫星跟踪。

26. 发明申请

WO01063753A1 AN ANALOG REFLECTIVE PREDISTORTER FOR POWER AMPLIFIERS 审中-公开
标题翻译：用于功率放大器的模拟反射预测器
公开(公告)号：WO01063753A1
公开(公告)日：2001-08-30
申请号：PCT/SE2001/000352
申请日：2001-02-16
IPC分类号： H03F1/32
CPC分类号： H03F1/3241 , H03F2200/198
摘要： A reflective predistorter compensates for phase and amplitude variations imposed on an input signal by one or more non linear transfer characteristics of, for example, a power amplifier operating at or near saturation. The predistorter includes a hybrid having an input terminal, an output terminal and at least two relative phase terminals separated by 90 degrees. A first compensation circuit may be coupled to one of the relative phase terminals and may include a combination of linear and passive non-linear circuit elements. A second compensation circuit, identical to the first compensation circuit may be coupled to an other of the relative phase terminals includes a second combination of linear and passive non-linear circuit elements. The passive non-linear circuit elements may be one or more diodes and if more than one, the diodes are not configured as antiparallel. A first and second bias control circuit may be included for controlling a bias level in the first and second compensation circuit.
摘要翻译：反射预失真器通过例如在或接近饱和的功率放大器的一个或多个非线性传递特性来补偿施加在输入信号上的相位和幅度变化。预失真器包括具有输入端子，输出端子和被隔开90度的至少两个相对相位的混合器。第一补偿电路可以耦合到相对相位端子之一，并且可以包括线性和无源非线性电路元件的组合。与第一补偿电路相同的第二补偿电路可以耦合到相对相位端子中的另一个包括线性和无源非线性电路元件的第二组合。无源非线性电路元件可以是一个或多个二极管，并且如果多于一个，二极管不被配置为反平行。可以包括第一和第二偏置控制电路，用于控制第一和第二补偿电路中的偏置电平。

27. 发明申请

WO01041299A1 METHOD AND APPARATUS FOR IMPROVED FEED FORWARD AMPLIFICATION 审中-公开
标题翻译：改进进料放大的方法和装置
公开(公告)号：WO01041299A1
公开(公告)日：2001-06-07
申请号：PCT/IB2000/001656
申请日：2000-11-10
IPC分类号： H03F1/32
CPC分类号： H03F1/3229 , H03F2200/198
摘要： The quality and efficiency of producing an amplified signal output from a feed-forward amplifier system having reduced distortion and noise is provided. Multiple adjusters are included in the signal cancellation loop of a feed-forward amplifier system so as to more accurately adjust the different frequencies within a frequency band. For example, in a multi-carrier feed-forward amplifier system two or more adjusters are provided in the signal cancellation loop so as to provide more accurate adjustment for the various carriers rather than relying on a single adjuster to adjust for all carriers. According to one variation of the invention, two adjusters are provided in the signal cancellation loop of a two-carrier multi-carrier feed-forward amplifier system. Each of the two adjusters adjusts a respective one of the two carriers. The outputs of the adjusters are combined and input to a delay element in the signal cancellation loop. According to another variation of the invention, the outputs of the adjusters are combined and input to the amplifier in the signal cancellation loop.
摘要翻译：提供了从具有减小的失真和噪声的前馈放大器系统输出的放大信号的质量和效率。多个调节器被包括在前馈放大器系统的信号消除环路中，以便更精确地调整频带内的不同频率。例如，在多载波前馈放大器系统中，在信号消除环路中提供两个或更多个调节器，以便为各种载波提供更准确的调整，而不是依靠单个调节器来调整所有载波。根据本发明的一个变型，在双载波多载波前馈放大器系统的信号消除环路中提供两个调节器。两个调节器中的每一个调节两个载体中的相应一个。调节器的输出被组合并输入到信号消除回路中的延迟元件。根据本发明的另一变型，调节器的输出被组合并在信号消除回路中输入到放大器。

28. 发明申请

WO01003289A1 POWER AMPLIFIER FOR EFFICIENTLY AMPLIFYING LINEARLY MODULATED SIGNALS 审中-公开
标题翻译：功率放大器，用于有效放大线性调制信号
公开(公告)号：WO01003289A1
公开(公告)日：2001-01-11
申请号：PCT/US2000/017654
申请日：2000-06-27
IPC分类号： H03F1/02 , H03F3/28 , H03F3/68
CPC分类号： H03F1/0288 , H03F1/0261 , H03F2200/198
摘要： A power amplifier includes a carrier amplifier path and a peaking amplifier path. The carrier amplifier path includes a carrier amplifier (208), and an impedance transforming network (214). The peaking amplifier path includes a peaking amplifier (210), an impedance transforming network (216), and a phase delay quarter wave element (226). The arrangement forms an inverted Doherty combiner where as the nominal impedance at a summing node (230) increases with increased conduction from the peaking amplifier, the load impedance at the output of the carrier amplifier decreases so as to maintain the carrier amplifier at a saturation point as the input signal (232) increases, and results in a reduction of the number of phase delay elements needed over a conventional Doherty approach. In a preferred embodiment the carrier and peaking amplifiers consist of cascaded stages, and are disposed on a common integrated circuit die (304). The impedance transforming networks and phase delay element are disposed on a common substrate (306), as is an input splitter network (308).
摘要翻译：功率放大器包括载波放大器路径和峰化放大器路径。载波放大器路径包括载波放大器（208）和阻抗变换网络（214）。峰化放大器路径包括峰值放大器（210），阻抗变换网络（216）和相位延迟四分之一波长元件（226）。该布置形成反向Doherty组合器，其中当加法节点（230）处的标称阻抗随着来自峰化放大器的传导增加而增加时，载波放大器的输出处的负载阻抗减小，以便将载波放大器保持在饱和点随着输入信号（232）增加，并且导致相对于常规Doherty方法所需的相位延迟元件的数量的减少。在优选实施例中，载波和峰化放大器由级联级组成，并且被布置在公共集成电路管芯（304）上。阻抗变换网络和相位延迟元件如输入分配器网络（308）一样设置在公共基板（306）上。

29. 发明申请

WO00014869A1 CARRIER REUTILIZATION FOR SYNCHRONOUS DETECTION 审中-公开
标题翻译：携带者进行同步检测
公开(公告)号：WO00014869A1
公开(公告)日：2000-03-16
申请号：PCT/US1999/020385
申请日：1999-09-03
IPC分类号： H03F1/32 , H03F1/26
CPC分类号： H03F1/3229 , H03F2200/198
摘要： Linearity of an RF amplifier (100) is enhanced by a feedforward correction system which utilizes a carrier reutilization synchronous detection system whereby an RF input signal (30) is modulated and utilized, by way of carrier to sideband multiplication, to provide synchronous detection used for system alignment over time, temperature, and input power level.
摘要翻译：通过前馈校正系统增强RF放大器（100）的线性度，该前馈校正系统利用载波再利用同步检测系统，通过载波到边带相乘来对RF输入信号（30）进行调制和利用，以提供用于随着时间，温度和输入功率水平的系统对准。

30. 发明申请

WO8807786A3 EQUAL POWER AMPLIFIER SYSTEM FOR ACTIVE PHASE ARRAY ANTENNA AND METHOD OF ARRANGING SAME 审中-公开
标题翻译：用于主动相阵列天线的等功率放大器系统及其安装方法
公开(公告)号：WO8807786A3
公开(公告)日：1989-01-26
申请号：PCT/US8800478
申请日：1988-02-19
申请人： HUGHES AIRCRAFT CO
发明人： THOMPSON JAMES D
IPC分类号： H01Q3/30 , H01P5/12 , H01Q3/22 , H01Q21/22 , H03F3/60
CPC分类号： H01Q21/22 , H01Q3/22 , H03F3/602 , H03F2200/198 , Y10S343/02
摘要： An equal power amplifier system (100) for amplifying a plurality of signals for transmission by an active phase array antenna (20), and a compact plural level beam-forming network (98) for forming a plurality of such signals, for example on excitation patterns for frequency scanned virtual beams, are disclosed. The amplifier system uses at most only a few sizes of power amplifiers (130, 134) to amplify efficiently numerous signals having significantly different amplitudes. This is accomplished by distributing the task of amplifying signal pairs (Ai, Bi) composed of one large amplitude signal and one small amplitude signal to an equal power amplifying apparatus (130; 230), which includes two hybrid couplers (236, 238) and two equally sized power amplifiers (232, 234). The first hybrid coupler (236) divides the two signals (Ai, Bi) for input into the two power amplifiers. The second hybrid coupler (238) receives the intermediate amplified signals from the power amplifiers and through constructive and destructive interference produces amplified output signals (Ai*, Bi*) corresponding to the input signals. Also disclosed is a method for properly selecting pairs of signals from an amplitude distribution (200; 202) for application to such equal power amplifying apparatuses of the amplifier system in order to operate the power amplifiers therein at or near peak efficiency. The beam-forming network (98) is arranged on two levels to simplify interconnection of the selected pairs of outputs of its line summers (176) for input into the equal power amplifier system. The amplifier system and beam-forming network may be used together, for example, in the transmit antenna system of a geosynchronous satellite (10) or mobile earth station.

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