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1. 发明申请

US20120208477A1 SYSTEMS AND METHODS FOR A RADIO FREQUENCY TRANSMITTER WITH IMPROVED LINEARITY AND POWER OUT UTILIZING PRE-DISTORTION AND A GAN (GALLIUM NITRIDE) POWER AMPLIFIER DEVICE 有权
标题翻译：具有改进的线性和功率放大的无线电频率发射机的系统和方法和使用GAN（氮化镓）功率放大器装置
公开(公告)号：US20120208477A1
公开(公告)日：2012-08-16
申请号：US13348329
申请日：2012-01-11
申请人： Jayesh NATH , Ying Shen , Frank Matsumoto , Yougming Qin , David C.M. Pham
发明人： Jayesh NATH , Ying Shen , Frank Matsumoto , Yougming Qin , David C.M. Pham
IPC分类号： H04B1/04
CPC分类号： H04B1/0475 , H03F1/3241 , H03F1/3247 , H03F1/345 , H03F3/19 , H03F3/245 , H03F3/60 , H03F2200/204 , H03F2200/207 , H03F2200/423 , H04B2001/0425
摘要： Various embodiments provide for systems and methods for increased linear output power of a transmitter. An exemplary wireless communications system for transmitting an input signal comprises a predistorter module, a GaN power amplifier, a coupler, and an antenna. The predistorter module is configured to detect existing distortion by comparing the input signal to a feedback signal and generate a correction signal. The predistorter may adaptively adjust its operation to minimize the existing distortion due to GaN power amplifier nonlinear characteristics. The result is that the GaN power amplifier may send a power signal of improved linearity to the antenna. The coupler is configured to sample the amplified signal from the GaN power amplifier to generate the feedback signal. The antenna is configured to transmit the amplified signal.
摘要翻译：各种实施例提供了用于增加发射机的线性输出功率的系统和方法。用于传输输入信号的示例性无线通信系统包括预失真器模块，GaN功率放大器，耦合器和天线。预失真器模块被配置为通过将输入信号与反馈信号进行比较来检测现有失真并产生校正信号。预失真器可以自适应地调整其操作，以使由于GaN功率放大器非线性特性导致的现有失真最小化。结果是GaN功率放大器可以向天线发送具有改进的线性度的功率信号。耦合器被配置为对来自GaN功率放大器的放大信号进行采样以产生反馈信号。天线被配置为发送放大的信号。

2. 发明授权

US08139676B2 Wireless communication unit, linearised transmitter circuit and method of linearising therein 有权
标题翻译：无线通信单元，线性化发射机电路及其线性化方法
公开(公告)号：US08139676B2
公开(公告)日：2012-03-20
申请号：US11623842
申请日：2007-01-17
申请人： Moshe Ben-Ayun , Paul H. Gailus , Ovadia Grossman , Mark Rozental
发明人： Moshe Ben-Ayun , Paul H. Gailus , Ovadia Grossman , Mark Rozental
IPC分类号： H04L27/36
CPC分类号： H04L27/364 , H03F1/32 , H03F1/34 , H03F1/345 , H03F3/24 , H03F2200/336 , H03F2200/57 , H04B1/0475 , H04B2001/0433
摘要： A wireless communication unit includes a frequency generation circuit, and a linearised transmitter operably coupled to the frequency generation circuit and having a forward path for routing a signal to be transmitted; and a feedback path, operably coupled to a power amplifier and the forward path for feeding back a portion of the signal to be transmitted. The feedback path and forward path form two loops in quadrature. The frequency generation circuit includes independent phase shift elements arranged to independently phase shift the two loops in quadrature (‘I’ and ‘Q’).
摘要翻译：无线通信单元包括频率产生电路和可操作地耦合到频率发生电路并且具有用于路由要发送的信号的前向路径的线性化发射机; 以及反馈路径，可操作地耦合到功率放大器和前向路径，用于反馈要发射的信号的一部分。反馈路径和正向路径形成正交的两个回路。频率发生电路包括独立的相移元件，其被布置为独立地相位移动正交（'I'和'Q'）中的两个回路。

3. 发明授权

US08103225B2 Multiport amplifiers in communications satellites 有权
标题翻译：通讯卫星中的多端口放大器
公开(公告)号：US08103225B2
公开(公告)日：2012-01-24
申请号：US12160980
申请日：2008-05-02
申请人： Alan David Couchman , Daryl Richard Jones
发明人： Alan David Couchman , Daryl Richard Jones
IPC分类号： H04B7/185 , H04B1/00 , H04B7/00 , H04Q11/12
CPC分类号： H03F3/602 , H03F1/0205 , H03F1/3235 , H03F1/3247 , H03F1/3282 , H03F1/345 , H03F3/68 , H03F2200/105 , H03F2200/192 , H03F2200/204 , H03F2200/451 , H03F2201/3212 , H03F2201/3218
摘要： Feedback loops are used within a Multiport Amplifier (MPA) of a communications satellite to maintain phase and amplitude tracking and hence isolation and combining performance. at Ku and Ka-bands, for which there is increasing interest in MPA applications, and where wavelengths are short and maintenance of phase/amplitude tracking becomes highly challenging. Feedback loops are located at strategic points within the MPA Output Network (ONET) to detect tracking errors and provide compensation. Errors are detected through power measurements at “null points”, with zero power corresponding to accurate tracking. The feedback loops adjust the MPA phase/gains such that the levels at these points are maintained at zero. The scheme operates with a pilot signal for measurement of nulls, injected at one of the MPA inputs.
摘要翻译：在通信卫星的多端口放大器（MPA）中使用反馈回路，以保持相位和幅度跟踪，从而保持隔离和组合性能。在Ku和Ka波段，对于MPA应用越来越感兴趣，波长短，并且相位/幅度跟踪的维护变得非常具有挑战性。反馈回路位于MPA输出网络（ONET）内的战略点，以检测跟踪误差并提供补偿。通过在“零点”处的功率测量检测到错误，零功率对应于精确跟踪。反馈回路调整MPA相位/增益，使得这些点处的电平保持在零。该方案使用用于测量零点的导频信号进行操作，在MPA输入之一处注入。

4. 发明申请

US20110190028A1 Power Amplifier Linearization Feedback Methods and Systems 有权
标题翻译：功率放大器线性化反馈方法和系统
公开(公告)号：US20110190028A1
公开(公告)日：2011-08-04
申请号：US13014655
申请日：2011-01-26
申请人： Wilhelm Steffen Hahn , Wei Chen
发明人： Wilhelm Steffen Hahn , Wei Chen
IPC分类号： H04M1/02 , H03F1/36
CPC分类号： H03F1/345 , H03F1/34 , H03F3/24 , H04B2001/0433
摘要： Linearizers can improve the linearity of power amplifiers by canceling or reducing amplitude of non-linearity components, (e.g., IM3, IM5, IM7, IM9, etc.) generated by the power amplifier. The linearizers can obtain samples of signals output by the power amplifier and process the samples to produce a compensation signal that is applied onto or into a transmission path leading to the power amplifier's input. The compensation signal is generated such that when amplified by the power amplifier, the amplified compensation signal cancels or reduces at least a portion of the non-linearity components produced by the power amplifier. A controller can improve the correction of the non-linearity components by executing one or more calibration algorithms and/or one or more tuning algorithms and adjusting settings of the linearizer based on the results of the algorithm(s).
摘要翻译：线性化器可以通过消除或减小由功率放大器产生的非线性分量（例如，IM3，IM5，IM7，IM9等）的振幅来提高功率放大器的线性度。线性化器可以获得由功率放大器输出的信号的样本，并处理样本以产生施加到通向功率放大器的输入的传输路径上的补偿信号。产生补偿信号，使得当由功率放大器放大时，放大的补偿信号抵消或减少由功率放大器产生的非线性分量的至少一部分。控制器可以通过执行一个或多个校准算法和/或一个或多个调谐算法并基于算法的结果来调整线性化器的设置来改善非线性分量的校正。

5. 发明授权

US06960956B2 Apparatus and methods for monitoring and controlling power amplifier linearity using detected fundamental and harmonic components 有权
标题翻译：使用检测到的基波和谐波分量监测和控制功率放大器线性度的装置和方法
公开(公告)号：US06960956B2
公开(公告)日：2005-11-01
申请号：US09759739
申请日：2001-01-12
申请人： David R. Pehlke , Ronald Meadows
发明人： David R. Pehlke , Ronald Meadows
IPC分类号： H03F1/02 , H03F1/32 , H03F1/34 , H04B1/04 , H04B17/00 , H03C1/62
CPC分类号： H03F1/0272 , H03F1/3247 , H03F1/34 , H03F1/345 , H03F3/24 , H04B1/0475 , H04B2001/0433
摘要： An apparatus for monitoring a power amplifier coupled to a transmission medium includes a detector circuit, coupled to the transmission medium, that generates first and second detector signals corresponding to respective fundamental and harmonic components of a power amplifier output signal produced by the power amplifier. A comparing circuit is coupled to the detector circuit and compares the first and second detector signals. The comparing circuit, responsive to a comparison of the first and second detector signals, may generate a signal that indicates linearity of the power amplifier. In some embodiments, the detector circuit may generate the second detector signal without requiring phase information for the harmonic component. In other embodiments, a control circuit controls linearity of the power amplifier responsive to comparison of the first and second detector signals, for example, by controlling power amplifier bias and/or input signal level based on the comparison. Related methods are also discussed.
摘要翻译：用于监测耦合到传输介质的功率放大器的装置包括耦合到传输介质的检测器电路，其产生对应于由功率放大器产生的功率放大器输出信号的相应基波和谐波分量的第一和第二检测器信号。比较电路耦合到检测器电路并比较第一和第二检测器信号。响应于第一和第二检测器信号的比较的比较电路可以产生指示功率放大器的线性度的信号。在一些实施例中，检测器电路可以产生第二检测器信号，而不需要谐波分量的相位信息。在其他实施例中，控制电路响应于第一和第二检测器信号的比较来控制功率放大器的线性度，例如通过基于比较来控制功率放大器偏置和/或输入信号电平。还讨论了相关方法。

6. 发明授权

US06687312B1 Signal processing system 有权
标题翻译：信号处理系统
公开(公告)号：US06687312B1
公开(公告)日：2004-02-03
申请号：US09462485
申请日：2000-03-08
申请人： Thomas Richard Davies
发明人： Thomas Richard Davies
IPC分类号： H04L2712
CPC分类号： H03F1/345 , H03F1/3247 , H03F2200/57
摘要： A signal processing system including at least one control loop having a forward path and a feedback path. A signal processor produces a representation of the desired downstream output amplitude and phase as a pair of substantially orthogonal signal components. A feedback-path splitter splits a feedback signal into a plurality of substantially orthogonal feedback signal components which are combined with the corresponding substantially orthogonal signal components to create error signals. A plurality of modulators control the amplitude, frequency, and/or phase of the pair of substantially orthogonal signal components on the basis of control signals which are derived from the error signals. The outputs of the plurality of modulating means are then combined into an output signal. A phase-shift controller in the forward path of the control loop derives the control signals from the error signals on the basis of monitored signal values from at least one predetermined point in the signal processing system.
摘要翻译：一种信号处理系统，包括具有正向路径和反馈路径的至少一个控制回路。信号处理器产生期望的下游输出幅度和相位的表示作为一对基本正交的信号分量。反馈路径分路器将反馈信号分离成多个基本上正交的反馈信号分量，其与相应的基本正交的信号分量组合以产生误差信号。多个调制器基于从误差信号导出的控制信号来控制一对基本上正交的信号分量的幅度，频率和/或相位。然后将多个调制装置的输出组合成输出信号。基于来自信号处理系统中的至少一个预定点的监视信号值，控制环路的正向路径中的相移控制器从误差信号中导出控制信号。

7. 发明申请

US20030224749A1 Semiconductor integrated circuit device for communication 有权
标题翻译：半导体集成电路器件进行通讯
公开(公告)号：US20030224749A1
公开(公告)日：2003-12-04
申请号：US10373020
申请日：2003-02-26
发明人： Toshiya Uozumi , Satoshi Tanaka , Masumi Kasahara , Hirotaka Oosawa , Yasuyuki Kimura , Robert Astle Henshaw
IPC分类号： H04B001/26 , H04B007/00
CPC分类号： H03L7/0898 , H03F1/0211 , H03F1/0266 , H03F1/0272 , H03F1/345 , H03F2200/294 , H03F2200/372 , H03G3/3042 , H03G3/3047 , H03L7/099 , H03L7/187 , H04B2001/0416 , H04L27/0008 , H04L27/2017 , H04L27/2071 , H04L27/361 , H04L27/368
摘要： A semiconductor integrated circuit device for communication is provided with a PLL circuit or the like formed therein, the PLL circuit which is capable of realizing the compensation of fluctuation due to temperature change, the inhibition of increase in the chip area and the ensurement of the performance margin, and which controls a VCO having multiple oscillation frequency bands. In the case where automatic calibration is performed by switching a switch to a side of a DC voltage source in the PLL circuit using a VCO having multiple oscillation bands, a tuning voltage (Vtune) of an RFVCO is fixed to a voltage value of a DC voltage source. However, since a temperature characteristic of canceling a VCO oscillation frequency is given to the DC voltage source, it is possible to minimize the influence on the band selection when a calibration table comes to no optimum one.
摘要翻译：用于通信的半导体集成电路器件设置有形成在其中的PLL电路等，PLL电路能够实现由于温度变化引起的波动的补偿，芯片面积的增加的抑制以及性能的确定边缘，并且其控制具有多个振荡频带的VCO。在通过使用具有多个振荡频带的VCO将开关切换到PLL电路中的直流电压源的一侧进行自动校准的情况下，将RFVCO的调谐电压（Vtune）固定为DC的电压值电压源。然而，由于将VCO振荡频率的温度特性赋予DC电压源，所以当校准表达到最佳时，可以最小化对频带选择的影响。

8. 发明授权

US06445249B1 Modification of phase component of error signal to reduce variation of phase component of output signal of power amplifier 失效
标题翻译：修正误差信号的相位分量，以减小功率放大器输出信号的相位分量变化
公开(公告)号：US06445249B1
公开(公告)日：2002-09-03
申请号：US09925556
申请日：2001-08-08
申请人： Andrew Merritt Khan , George Francis Opas
发明人： Andrew Merritt Khan , George Francis Opas
IPC分类号： H03F126
CPC分类号： H03F1/0222 , H03F1/3282 , H03F1/345
摘要： System (100) is coupled with power amplifier (106). Generation component (166) generates error signal (110) based at least in part on an input signal (144) for the system (100). The error signal (110) includes a phase component. The input signal (144) includes an envelope component. Modification component (130) modifies the phase component of the error signal (110) in response to the envelope component of the input signal to reduce variation of a phase component of the power amplifier output signal (194).
摘要翻译：系统（100）与功率放大器（106）耦合。至少部分地基于系统（100）的输入信号（144），生成部件（166）产生误差信号（110）。误差信号（110）包括相位分量。输入信号（144）包括信封分量。修改组件（130）响应于输入信号的包络分量来修改误差信号（110）的相位分量，以减小功率放大器输出信号（194）的相位分量的变化。

9. 发明授权

US06417729B1 Linear power control loop 失效
标题翻译：线性功率控制回路
公开(公告)号：US06417729B1
公开(公告)日：2002-07-09
申请号：US09491538
申请日：2000-01-26
申请人： Normand T. Lemay , Brian T. Brunn , John W. MacConnell , Eric Sadowski , Eric W. Lofstad
发明人： Normand T. Lemay , Brian T. Brunn , John W. MacConnell , Eric Sadowski , Eric W. Lofstad
IPC分类号： H03G320
CPC分类号： G01R21/10 , G01R21/14 , H03B5/04 , H03C1/06 , H03F1/345 , H03F3/45475 , H03G3/004 , H03G3/3042 , H03L1/02 , H03L7/18 , Y10S323/907
摘要： The present invention presents a closed loop system that utilizes a non-linear reference to control a power amplifier's output power in order to obtain a linear transfer function of dB per adjustment step of a reference input. The closed loop system demonstrates that each non-linear stage/step in an automatic gain control system can create a linear closed loop system when using a non-linear reference. The closed loop system of the present invention eliminates the need for a linearization circuit for the system's power detector. The closed loop system may be used with most power amplifiers when linear control in terms of dB vs. adjustment setting of the input reference signal is desired. Output power in terms of dBms can be accurately set in linear steps where power control over a wide dynamic range is desired.
摘要翻译：本发明提出了一种闭环系统，其利用非线性参考来控制功率放大器的输出功率，以便获得参考输入的每个调节步长的dB的线性传递函数。闭环系统表明，当使用非线性参考时，自动增益控制系统中的每个非线性阶段/步骤可以创建线性闭环系统。本发明的闭环系统消除了对系统功率检测器的线性化电路的需要。当对于输入参考信号的调整设置的dB进行线性控制时，闭环系统可以与大多数功率放大器一起使用。以dBms为单位的输出功率可以在需要宽动态范围内的功率控制的线性步骤中精确设置。

10. 发明授权

US06351677B1 Method and device in a telecommunication system 有权
标题翻译：电信系统中的方法和设备
公开(公告)号：US06351677B1
公开(公告)日：2002-02-26
申请号：US09184973
申请日：1998-11-03
申请人： Scott Allen Leyonhjelm , Mark Briffa
发明人： Scott Allen Leyonhjelm , Mark Briffa
IPC分类号： G06F1900
CPC分类号： H03F1/34 , H03C3/08 , H03D7/168 , H03F1/3229 , H03F1/3247 , H03F1/3282 , H03F1/3294 , H03F1/345 , H03F2200/57 , H03F2201/3231 , H04L27/368
摘要： According to the invention, a Cartesian control means (16) comprising a phase rotator (50) and a phase adjuster (52) is provided. With a method and a device according to the invention, a system is provided that is unconditionally stable with respect to non-phase alignment, regardless of input power changes, temperature and component ageing. No certain conditions need to be placed upon the control system to ensure stability, i.e. the system is non-obtrusive and requires no off-line calibration. The inclusion of the phase rotator (50) and phase adjustment techniques into the Cartesian control system makes this possible.
摘要翻译：根据本发明，提供了包括相位旋转器（50）和相位调节器（52）的笛卡尔控制装置（16）。利用根据本发明的方法和装置，提供了无论输入功率变化，温度和组件老化如何，都相对于非相位对准无条件稳定的系统。控制系统不需要放置某些条件以确保稳定性，即系统不引人注目，不需要离线校准。将相位旋转器（50）和相位调整技术纳入笛卡尔控制系统使得这成为可能。

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