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    • 3. 发明公开
    • High-efficiency duel-state power amplifier
    • Hochleistungs-双Leistungsverstärker
    • EP2169825A1
    • 2010-03-31
    • EP08290905.2
    • 2008-09-24
    • Alcatel Lucent
    • Grebennikov, Andrei
    • H03F3/60
    • H03F3/602H03F3/72
    • A dual-state power amplifier of the Laterally Diffused Metal-Oxide Semiconductor LDMOS type comprising four amplifiers (PA1-PA4) and adapted to operate either with only one amplifier (PA1) or with all the four amplifiers (PA1-PA4). The present power amplifier provides higher efficiency and higher linearity for base station power amplifiers simultaneously at maximum and backoff output power levels. To this end, the present power amplifier comprises two quarter-wavelength λ/4 transmission line (TL23, TL24) with characteristic impedance Zo each coupling outlets of the amplifiers (PA1, PA2; PA3, PA4) to the ground (GND) via distinct switches (SW1; SW2). The two transmission lines (TL23, TL24) and the two switches (SW1, SW2) replace four transmission lines (TL31, TL32, TL43, TL44) of the known power amplifier ( Fig. 1 ).
    • 包括四个放大器(PA1-PA4)并且适于仅与一个放大器(PA1)或所有四个放大器(PA1-PA4)一起操作的双向扩散金属氧化物半导体LDMOS型双态功率放大器。 本功率放大器在最大和回退输出功率电平下同时为基站功率放大器提供更高的效率和更高的线性度。 为此,本功率放大器包括两个四分之一波长的»/ 4传输线(TL23,TL24),其特征阻抗Zo通过不同的放大器(PA1,PA2,PA3,PA4)到地(GND)的每个耦合出口 开关(SW1; SW2)。 两条传输线(TL23,TL24)和两个开关(SW1,SW2)代替已知功率放大器(图1)的四条传输线(TL31,TL32,TL43,TL44)。
    • 5. 发明公开
    • Power amplifier for mobile telecommunications
    • 移动电信的功率放大器
    • EP2403135A1
    • 2012-01-04
    • EP10290342.4
    • 2010-06-24
    • Alcatel Lucent
    • Grebennikov, Andrei
    • H03F1/02H03F1/07
    • H03F1/0288
    • A four-stage Doherty power amplifier includes a carrier amplifier (6), and first, second and third peaking amplifiers (14, 20, 24), the outputs of the amplifiers being coupled through an impedance network to an output node (10), wherein the carrier amplifier (6) is coupled to the output node through a first impedance inverting quarter wave transmission line stub (8), the first peaking amplifier (14) is coupled to the output node through second and third impedance inverting quarter wave transmission line stubs (16, 18) in order to provide a resultant non-inverting impedance between the first peaking amplifier and the output node (10), the second peaking amplifier (20) is coupled to a node between the second and third stubs (16, 18), and the third peaking amplifier (26) is directly coupled to the output node. The output node is connected to an output load (R L ) via an impedance transforming quarter wave transmission line stub (12).
    • 四级Doherty功率放大器包括载波放大器(6)以及第一,第二和第三峰化放大器(14,20,24),放大器的输出通过阻抗网络耦合到输出节点(10),其中, 其中,所述载波放大器(6)通过第一阻抗反转四分之一波长传输线接线柱(8)耦合到所述输出节点,所述第一峰化放大器(14)通过第二和第三阻抗反转四分之一波长传输线 (16,18),以便在第一峰值放大器和输出节点(10)之间提供合成的非反相阻抗,第二峰值放大器(20)耦合到第二和第三短截线(16,18)之间的节点, 18),并且第三峰值放大器(26)直接耦合到输出节点。 输出节点通过阻抗变换四分之一波长传输线端(12)连接到输出负载(RL)。
    • 6. 发明公开
    • Power amplifier linearization using RF feedback
    • StromverstärkerlinearisierungungUnter Verwendung von Hochfrequenz-Feedback
    • EP2161832A1
    • 2010-03-10
    • EP08290846.8
    • 2008-09-09
    • Alcatel Lucent
    • Grebennikov, AndreiPivit, Florian
    • H03F1/34
    • H03F1/345
    • A power amplifier adapted to operate with simultaneous high efficiency and high linearity by using a RF feedback path to create an input predistortion signal. This power amplifier mainly includes a main amplifier (MA21), two splitters (SP21, SP31), one combiner (CO21), one subtracter (SU21), two phase shifters (PH21, PH31), one attenuator (AT21) and one error amplifier (EA21). The splitters, subtracter and combiner are designed in the form of 90-degree or quadrature hybrid couplers. A quadrature hybrid can be implemented with any lumped or transmission-line elements and has an important advantage compared to the in-phase splitter that at equal values of reflection coefficients from loads connected to the in phase and 90° phase shift terminals, the reflection wave is lacking at the main input terminal and, consequently, the input voltage standing wave ratio of a quadrature hybrid does not depend on the equal load mismatch level.
    • 一种功率放大器,其适用于通过使用RF反馈路径同时实现高效率和高线性度来产生输入预失真信号。 该功率放大器主要包括主放大器(MA21),两个分离器(SP21,SP31),一个组合器(CO21),一个减法器(SU21),两个移相器(PH21,PH31),一个衰减器(AT21)和一个误差放大器 (EA21)。 分离器,减法器和组合器设计为90度或正交混合耦合器的形式。 正交混合可以用任何集中或传输线路元件实现,并且与同相分离器相比具有重要的优点,在相同的相位和90°相移端子的负载的反射系数的相等值,反射波 在主输入端子不足,因此正交混合的输入电压驻波比不依赖于相等的负载失配电平。
    • 9. 发明公开
    • Doherty amplifier
    • 多尔蒂Verstärker
    • EP2634916A1
    • 2013-09-04
    • EP12360011.6
    • 2012-02-29
    • Alcatel Lucent
    • Grebennikov, AndreiWong, James N.H.
    • H03F1/02H03F1/48H03F1/56
    • H03F1/0288H03F1/486H03F1/56H03F2200/36H03F2200/387H03F2200/39
    • A Doherty amplifier (10) is operable to receive an input signal (Pin) and to provide an amplified output signal (Pout) at an amplifier output (95). The Doherty amplifier (10) comprises: first (30) and second (40) amplifier stages, each amplifier stage being switchable between an amplifying and a non-amplifying state, each amplifier stage being arranged in parallel to receive the input signal (Pin) and, in the amplifying state, to provide a respective amplified signal at a respective amplifier stage output; and an output network (50) comprising first (80) and second (90) impedance transformers, each impedance transformer being coupled at a first side with a respective amplifier stage output and being coupled together in parallel at a second side with the amplifier output (95). By using an alternative, parallel architecture, the impedance transformation ratio experienced by an amplified signal under different operating conditions is significantly reduced compared to that of a traditional architecture which uses a single, series, impedance transformer which combines and transforms the amplified signals from both amplifier stages (30, 40).
    • Doherty放大器(10)可操作以接收输入信号(Pin)并且在放大器输出(95)处提供放大的输出信号(Pout)。 多赫蒂放大器(10)包括:第一(30)和第二(40)放大器级,每个放大器级可在放大和非放大状态之间切换,每个放大器级并联布置以接收输入信号(Pin) 并且在放大状态下,在相应的放大级输出端提供相应的放大信号; 以及包括第一(80)和第二(90)阻抗变换器的输出网络(50),每个阻抗变换器在第一侧与相应的放大器级输出耦合,并且在第二侧与放大器输出 95)。 通过使用另一种并行架构,与使用单个串联阻抗变换器的传统架构相比,在不同工作条件下由放大信号所经历的阻抗变换比显着降低,该变压器组合并变换来自两个放大器的放大信号 阶段(30,40)。
    • 10. 发明公开
    • Combined multi-path high-efficiency power amplifier
    • Kombinierter Mehrpfad-Leistungsverstärkermit hohem Wirkungsgrad
    • EP2169823A1
    • 2010-03-31
    • EP08290904.5
    • 2008-09-24
    • Alcatel Lucent
    • Grebennikov, Andrei
    • H03F1/02H03F3/60
    • H03F1/0277H03F3/602H03F2200/192H03F2200/198H03F2200/204H03F2200/451
    • A power amplifier structure having, between a main input (RFin) and a main output (RFout), a circuit architecture comprising a first quadrature hybrid (HDI) of which a first terminal (I1) is connected to the main input and a second quadrature hybrid (HDO) of which a first terminal (O1) is connected to the main output. The circuit architecture of the power amplifier structure comprises a balanced pair of high power paths (HP1A, HP1B): a first high power path (HP1A) comprising a first high power amplifier structure with a power input coupled to a second terminal (I2) of the first quadrature hybrid (HDI) and a power output coupled to a second terminal (02) of the second quadrature hybrid (HDO), and a second high power path (HP1B) comprising a second high power amplifier structure with a power input coupled to a third terminal (I3) of the first quadrature hybrid (HDI) and a power output coupled to a third terminal (03) of the second quadrature hybrid (HDO). The circuit architecture of the power amplifier structure also comprises a low power amplifying path constituted by a low power amplifier (LP1) having an input connected to a fourth terminal (I4) of the first quadrature hybrid (HDI) and an output connected to a fourth terminal (04) of the second quadrature hybrid (HDO). In order to provide multiple peak efficiencies at different backoff powers, the internal circuit architecture of the first high power path (HP1A) as well as the internal circuit architecture of the second high power path (HP1B) are both identical to the circuit architecture of the power amplifier structure.
    • 一种在主输入(RFin)和主输出(RFout)之间具有包括第一正交混合(HDI)的电路架构的功率放大器结构,其中第一端子(I1)连接到主输入端,第二正交 混合(HDO),其第一端子(O1)连接到主输出端。 所述功率放大器结构的电路架构包括平衡的一对高功率路径(HP1A,HP1B):第一高功率路径(HP1A),其包括第一高功率放大器结构,其中功率输入耦合到第二端(I2) 第一正交混合(HDI)和耦合到第二正交混合(HDO)的第二终端(02)的功率输出,以及包括第二高功率放大器结构的第二高功率路径(HP1B),其中功率输入耦合到 所述第一正交混合(HDI)的第三终端(I3)和耦合到所述第二正交混合(HDO)的第三终端(03)的功率输出。 功率放大器结构的电路结构还包括由具有连接到第一正交混合(HDI)的第四端子(I4)的输入端的低功率放大器(LP1)和连接到第四正交混合电路 第二正交混合(HDO)的终端(04)。 为了在不同的退避功率下提供多个峰值效率,第一个高功率路径(HP1A)的内部电路架构以及第二个高功率路径(HP1B)的内部电路架构都与 功率放大器结构。