公开(公告)号：EP2204903A1

公开(公告)日：2010-07-07

申请号：EP09179655.7

申请日：2009-12-17

申请人： Ubidyne Inc.

发明人： Neumann, Dirk ,  Kenington, Peter

IPC分类号： H03F1/32 ,  H03F3/68 ,  H03F3/24 ,  H04B10/00 ,  H04L27/36

CPC分类号： H03F1/3247 ,  H03F1/3258 ,  H03F1/3294 ,  H03F3/24 ,  H03F3/68 ,  H03F2200/204 ,  H03F2200/207 ,  H03F2200/336 ,  H03F2200/451 ,  H03F2201/3233 ,  H04L27/368

摘要： The present disclosure relates to a radio station (1) providing a digital predistortion (24) to be imposed on a payload signal (15). The digital predistortion (24) is usable as a general predistortion for several transmit paths (70-1, ..., 70-N) of the radio station (1). The radio station (1) provides coupled transmit signals (80-1, ..., 80-N) to be combined within a combiner (100) forming a common feedback signal (155). The common feedback signal (155) is relayed along a common feedback path (150). A digital predistortion update unit (22) is adapted to update the digital predistortion (24) in order to linearise a transfer characteristics of the transmit paths (70-1, ..., 70-N). The disclosure further relates to a method of digitally predistorting a payload signal (15) in order to linearise a transmit characteristics of the transmit paths (70-1, ..., 70-N).

摘要翻译： 本公开涉及提供要施加在有效载荷信号（15）上的数字预失真（24）的无线电站（1）。 数字预失真（24）可用作无线电台（1）的若干发射路径（70-1，...，70-N）的一般预失真。 无线电站（1）提供组合在组合器（100）内的耦合发射信号（80-1，...，80-N），形成公共反馈信号（155）。 公共反馈信号（155）沿着公共反馈路径（150）中继。 数字预失真更新单元（22）适于更新数字预失真（24），以便线性化发送路径（70-1，...，70-N）的传输特性。 本公开还涉及一种数字预失真有效载荷信号（15）以便线性化发射路径（70-1，...，70-N）的发射特性的方法。

公开(公告)号：EP2165414A2

公开(公告)日：2010-03-24

申请号：EP08763150.3

申请日：2008-05-30

申请人： Koninklijke Philips Electronics N.V.

发明人： VAN HELVOORT, Marinus Johannes Adrianus Maria ,  HAANS, Paulus Cornelius Hendrikus Adrianus ,  DE VREEDE, Leo

IPC分类号： H03F3/189 ,  H03F3/68

CPC分类号： H03F3/189 ,  H03F3/68

摘要： It is proposed herein to improve the specifications of a low-noise amplifier (LNA) by integrating itin a chip. In order to cover a range of operating frequencies using a single chip, the integrated-circuit amplifier proposed herein comprises an input port configured to receive a magnetic resonance (MR) signal from a radio-frequency (RF) coil, one or more LNAs configured to amplify the received MR signal, and an output port configured to output the amplified MR signal from the oneor more LNAs. The operating frequencyofthe RF coil depends on the field strength, The matching circuit, if present, needs to be tuned to operate at the operating frequency of the RF coil, and depends on the component values in the loop, thus on loop size. In contrast, the proposed integrated-circuit amplifier is capable of directly connecting to RF coils with different loop sizes, without the need for a matching circuit.

公开(公告)号：EP1932234A4

公开(公告)日：2009-12-16

申请号：EP06801904

申请日：2006-08-21

申请人： CISCO TECH INC

发明人： GIATIS PETROS ,  JOHNSON GERALD B ,  SIMON JR FRANKLIN D ,  METSKER COREY

IPC分类号： H03F3/04 ,  H03F3/45 ,  H03F3/68

CPC分类号： H03G1/0088 ,  H03F1/34 ,  H03F3/211 ,  H03F3/24 ,  H03F3/45475 ,  H03F2200/105 ,  H03F2200/99

公开(公告)号：EP1861920A4

公开(公告)日：2009-12-02

申请号：EP06739337

申请日：2006-03-16

申请人： CREE MICROWAVE INC ,  CREE INC

发明人： PENGELLY RAYMOND S ,  CRESCENZI JAMES E JR ,  WOOD SIMON M ,  DEKKER TOM STEWART

IPC分类号： H03F3/68

CPC分类号： H03F1/0288

公开(公告)号：EP1470636B1

公开(公告)日：2009-08-26

申请号：EP03705926.8

申请日：2003-01-23

申请人： CREE MICROWAVE, LLC

发明人： PENGELLY, Raymond, Sydney

IPC分类号： H03F3/68 ,  H03F1/02

CPC分类号： H03F1/32 ,  H03F1/0277 ,  H03F1/0288 ,  H03F3/602 ,  H03F2201/3203

摘要： An RF power amplifier for amplifying an RF signal over a broad range of power with improved efficiency includes a main amplifier (20) for amplifying an RF signal over a first range of power and with a power saturation level below the maximum of the broad range of power. A plurality of auxiliary amplifiers (21, 22, 23) are connected in parallel with the main amplifier (20) with each of the auxiliary amplifiers (21, 22, 23) being biased to sequentially provide an amplified output signal after the main amplifier (20) approaches saturation. The input signal is applied through a signal splitter (32) to the main amplifier (20) and the plurality of auxiliary amplifiers (21, 22, 23), and an output for receiving amplified output signals from the main amplifier (20) and the plurality of auxiliary amplifiers (21, 22, 23) includes a resistive load R/2. The split input signal is applied through a 90° transformer (30) to the main amplifier (20), and the outputs of the auxiliary amplifiers (21, 22, 23) are applied through 90° transformers (24, 25, 26) to a output load (28). When operating below saturation, the main amplifier (20) delivers power to a load of 2R and the main amplifier (20) delivers current to the load which is one-half the current at maximum power and the amplifier is saturated.

公开(公告)号：EP2063531A1

公开(公告)日：2009-05-27

申请号：EP07807243.6

申请日：2007-09-13

申请人： NEC Corporation

发明人： NOSE, Koichi ,  ISHIZAKI, Haruya ,  MIZUNO, Masayuki

IPC分类号： H03K4/02 ,  H03F3/24 ,  H03F3/68 ,  H03K4/92 ,  H03K5/02

CPC分类号： H03K4/026 ,  H03F1/0294 ,  H03F1/32 ,  H03F3/2171 ,  H03F3/2178 ,  H03F3/245 ,  H03F3/72 ,  H03F2200/384 ,  H03K4/92

摘要： [PROBLEMS] To provide, for example, a pulse input type power amplifying apparatus that can be operated at low voltage and low power, effectively suppressing generation of harmonic component. [MEANS FOR SOLVING THE PROBLEMS] The amplifying apparatus includes at least two amplification circuits, one and other amplification circuits, composed of multiple amplifiers whose output sides are connected to each other, driven at the same frequency. The multiple amplifiers forming the one amplification circuit are configured with a first inverting amplifier M12 inputting and amplifying a reference pulse, and a second inverting amplifier M11 to which an inverted pulse formed by shifting and inverting the phase of the reference pulse is inputted. The other amplification circuit is configured with the first inverting amplifier M14 and the second inverting amplifier M13 to each of which other wide pulse with a width greater than that of the reference pulse is commonly inputted.

摘要翻译： 为了提供例如能够以低电压和低功率工作的脉冲输入型功率放大装置，能有效地抑制谐波分量的产生。 解决问题的手段放大装置包括至少两个放大电路，一个放大电路和另一个放大电路，其输出侧相互连接并以相同频率驱动的多个放大器组成。 形成一个放大电路的多个放大器配置有输入和放大参考脉冲的第一反相放大器M12和输入通过移位和反相参考脉冲的相位形成的反相脉冲的第二反相放大器M11。 另一个放大电路配置有第一反相放大器M14和第二反相放大器M13，其中通常输入宽度大于参考脉冲宽度的其它宽脉冲。

公开(公告)号：EP1912328A4

公开(公告)日：2009-01-07

申请号：EP06782031

申请日：2006-07-31

申请人： MITSUBISHI ELECTRIC CORP

发明人： HORIGUCHI K ,  ISHIZAKA S ,  YAMAUCHI K ,  NAKAYAMA M

IPC分类号： H03F1/07 ,  H03F3/60 ,  H03F3/68

CPC分类号： H03F1/0288

摘要： When an input signal level is small, an electrical length of a phase line (21) and an electrical length of a phase line (23) are set so that impedance viewing an output side from an impedance reference point (11) of an output side of a carrier amplifier (3) is 2R + a (R is a load resistance and a is positive) and an electrical length of a phase line (22) is set to a difference between the electrical length of the phase line (21) and the electrical length of the phase line (23).

公开(公告)号：EP1317063B1

公开(公告)日：2007-12-12

申请号：EP01961218.3

申请日：2001-08-30

申请人： MITSUBISHI DENKI KABUSHIKI KAISHA

发明人： NAKAYAMA, Masatoshi, c/o MITSUBISHI DENKI K K ,  HORIGUCHI, Kenichi, c/o MITSUBISHI DENKI K K ,  IKEDA, Yukio, c/o MITSUBISHI DENKI K K ,  KUNUGI, Satoshi,c/o MITSUBISHI DENKI K K ,  SAKAI, Yuji, c/o MITSUBISHI DENKI K K

IPC分类号： H03F3/68 ,  H03F1/56 ,  H03F3/189 ,  H03F3/60

CPC分类号： H03F3/604 ,  H03F1/3223 ,  H03F1/565

摘要： Provided are a distribution unit (3) for distributing a high-frequency signal inputted via an input terminal (1) into two signals, a main amplification unit (4) connected to one output side of the distribution unit (3), for amplifying a high-frequency signal from the unit (3), an auxiliary amplification unit (5) connected to the other output side of the unit (3), for not operating when the momentary power of a high-frequency signal is small but amplifying a high-frequency signal from the unit (3) when it is large, and a circulator (6) for feeding a high-frequency signal amplified by the unit (5) to the output side of the main amplification unit (4) and a high-frequency signal amplified by the unit (4) to an output terminal (2).

公开(公告)号：EP1667320A4

公开(公告)日：2007-08-01

申请号：EP04773418

申请日：2004-09-17

申请人： NEC CORP

发明人： SHIIKUMA KAZUMI

IPC分类号： H03F1/07 ,  H03F1/02 ,  H03F1/32 ,  H03F3/195 ,  H03F3/60 ,  H03F3/68

CPC分类号： H03F1/32 ,  H03F1/0288 ,  H03F3/195 ,  H03F3/602 ,  H03F2200/255 ,  H03F2200/423

摘要： There are included a carrier amplifier that performs signal amplification at all times; a peak amplifier that operates only at a time of outputting of a high electric power; a combiner that combines and outputs the outputs from the carrier and peak amplifiers; and a distributor that distributes an input signal to the carrier and peak amplifiers. The carrier and peak amplifiers are included in a single package (1) (a single package transistor).

摘要翻译： 包括一个载波放大器，可随时进行信号放大; 仅在输出高电力时才工作的峰值放大器; 组合并输出来自载波和峰值放大器的输出的组合器; 以及将输入信号分配给载波和峰值放大器的分配器。 载波和峰值放大器包含在单个封装（1）（单个封装晶体管）中。

公开(公告)号：EP1425852A4

公开(公告)日：2007-05-23

申请号：EP02768490

申请日：2002-08-12

申请人： HARRIS CORP

发明人： HU ZHIQUN ,  BORODULIN DMITRIY ,  CABRERA GEORGE ,  DITTMER TIMOTHY ,  MONSON GAVIN ,  MOORE PAUL

IPC分类号： H03F3/68 ,  H03F1/30 ,  H03F1/32 ,  H03F3/21

CPC分类号： H03F1/304 ,  H03F3/211

摘要： A power amplifier system is presented for use in amplifying an RF input signal comprising N sub-power amplifiers (PA-1 to PA-N) are connected in parallel with each receiving and amplifying a portion of the RF input signal. A combiner (CB) combines the amplified portions of the RF input signal to provide a combined output signal. Each sub-amplifier (PA-1 to PA-N) includes at least one transistor having an input port that receives a DC bias voltage and an output port, such that when the RF input signal is not present a quiescent current flows through the output port. A controller (M.C.) is operative when the RF signal is not present to check and adjust the magnitude of the quiescent current flowing in each of the sub-amplifier output ports in the sequence of 1 N.