公开(公告)号：US08432962B2

公开(公告)日：2013-04-30

申请号：US12306324

申请日：2006-07-27

申请人： Henrik Sjöland

发明人： Henrik Sjöland

IPC分类号： H03K7/08 ,  H03F3/38

CPC分类号： H03F3/217 ,  H03F3/189

摘要： The invention concerns a method of amplifying a radio frequency signal, a switched mode power amplifying device and a radio transmission device comprising such a power amplifying device. The switched power amplifying device (10) comprises an envelope signal input (El), an arithmetic combining unit (SUB) between the envelope signal input and a modulating unit (PWM), configured to modulate a modified envelope signal (E′) output by the arithmetic combining unit with a carrier (C) for obtaining a modulated signal, an amplifying unit (PA) connected to the modulating unit providing an output signal (O) and a feedback path connected between the amplifying unit (PA) and the arithmetic combining unit (SUB). The feedback path comprises a low pass filter (LPF) for filtering the output signal (O) and a signal processing unit (DSP) processing the filtered signal (Vf) in order to obtain an estimated radio frequency amplitude (AE) for provision to the arithmetic combining unit.

摘要翻译： 本发明涉及放大射频信号的方法，开关模式功率放大装置和包括这种功率放大装置的无线电传输装置。 开关功率放大装置（10）包括包络信号输入（E1），包络信号输入与调制单元（PWM）之间的算术组合单元（SUB），被配置为调制由 算术组合单元与用于获得调制信号的载波（C），连接到调制单元的放大单元（PA），提供输出信号（O）和连接在放大单元（PA）和算术组合之间的反馈路径 单位（SUB）。 反馈路径包括用于对输出信号（O）进行滤波的低通滤波器（LPF）和处理滤波信号（Vf）的信号处理单元（DSP），以获得估计的射频幅度（AE），以提供给 算术组合单元。

公开(公告)号：US20130033321A1

公开(公告)日：2013-02-07

申请号：US13197022

申请日：2011-08-03

申请人： Jonas Lindstrand ,  Carl Bryant ,  Henrik Sjöland

发明人： Jonas Lindstrand ,  Carl Bryant ,  Henrik Sjöland

IPC分类号： H03F3/45 ,  H03F1/22

CPC分类号： H03F1/523 ,  H03F1/565 ,  H03F3/2171 ,  H03F3/245 ,  H03F3/45188 ,  H03F2200/387 ,  H03F2200/391 ,  H03F2203/45318 ,  H03F2203/45332 ,  H03F2203/45396 ,  H03F2203/45631 ,  H03F2203/45638 ,  H03H7/38

摘要： A power amplifier circuit utilizes a cross-coupled tapped cascade topology together with a technique of applying an RF injection current into a wideband node to provide a single-stage power amplifier with improved PAE, output power, and gain over a wide RF band. The amplifier circuit comprises a cross-coupled cascade transistor unit comprising a pair of cross-coupled cascode transistors, a cross-coupled switching transistor unit comprising a pair of cross-coupled switching transistors, and an RF current generator. RF current generator generates a differential RF injection current, while switching transistor unit amplifies the injection current to generate an amplified injection current at the wideband node of the amplifier circuit and the cascode transistor unit further amplifies the injection current to generate the desired amplified signal at the output of the amplifier circuit. The output signal amplitude generally depends on the differential injection current and the supply voltage VDD applied to the power amplifier circuit.

摘要翻译： 功率放大器电路利用交叉耦合抽头级联拓扑以及将RF注入电流施加到宽带节点中以提供具有改进的PAE，输出功率和宽RF频带上的增益的单级功率放大器的技术。 放大器电路包括交叉耦合级联晶体管单元，其包括一对交叉耦合共源共栅晶体管，包括一对交叉耦合开关晶体管的交叉耦合开关晶体管单元和RF电流发生器。 RF电流发生器产生差分RF注入电流，而开关晶体管单元放大注入电流以在放大器电路的宽带节点处产生放大的注入电流，并且共源共栅晶体管单元进一步放大注入电流以在 输出放大电路。 输出信号幅度通常取决于差分注入电流和施加到功率放大器电路的电源电压VDD。

公开(公告)号：US07957712B2

公开(公告)日：2011-06-07

申请号：US12139813

申请日：2008-06-16

申请人： Henrik Sjöland

发明人： Henrik Sjöland

IPC分类号： H04B1/04

CPC分类号： H03F1/0294 ,  H03F3/217 ,  H03F3/24

摘要： Disclosed herein are methods and apparatus for processing an input information signal having varying amplitude and phase to obtain an amplified output signal having the same amplitude and phase variation. In an exemplary method, an input information signal is decomposed into two pairs of constant-envelope component signals such that the vector sum of the first pair is orthogonal to the vector sum of the second pair, for desired signal amplitudes below a level corresponding to a pre-determined threshold. For desired signal amplitudes above this level, the input information signal is instead decomposed into two pairs of constant-envelope component signals such that the vector sum of the first pair is separated by less than ninety degrees from the vector sum of the second pair. The constant-envelope component signals may be amplified by highly-efficient non-linear amplifier elements and combined to obtain the amplified output signal.

摘要翻译： 本文公开了用于处理具有变化幅度和相位的输入信息信号以获得具有相同幅度和相位变化的放大输出信号的方法和装置。 在示例性方法中，输入信息信号被分解为两对恒定包络分量信号，使得第一对的矢量和正交于第二对的矢量和，对于期望的信号幅度低于对应于 预定阈值。 对于高于该电平的期望信号幅度，输入信息信号被分解为两对恒定包络分量信号，使得第一对的矢量和从第二对的矢量和中分离小于九十度。 恒定包络分量信号可以被高效非线性放大器元件放大并被组合以获得放大的输出信号。