公开(公告)号：EP1489739B1

公开(公告)日：2006-12-13

申请号：EP04251144.4

申请日：2004-02-27

申请人： Mitsumi Electric Co., Ltd.

发明人： Omata, Jun-Ichi, Mitsumi Electric Co., Ltd. ,  Yamanaka, Yuji, Mitsumi Electric Co., Ltd. ,  Oda, Tomomi, Mitsumi Electric Co., Ltd.

IPC分类号： H03F3/45 ,  H03F3/72 ,  H03F3/68

CPC分类号： H03F3/3022 ,  H03F3/45183 ,  H03F3/68 ,  H03F3/72 ,  H03F2200/03 ,  H03F2203/45366 ,  H03F2203/45504 ,  H03F2203/45506 ,  H03F2203/7212

公开(公告)号：EP1620943A4

公开(公告)日：2006-08-09

申请号：EP04750107

申请日：2004-04-08

申请人： CREE MICROWAVE LLC

发明人： PENGELLY RAYMOND SYDNEY ,  WOOD SIMON MAURICE

IPC分类号： H03F3/68 ,  H03F1/02 ,  H03F1/07 ,  H03F1/32 ,  H03F3/24 ,  H03F3/60

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

摘要： An RF power amplifier circuit for amplifying an RF signal over a broad range of power with improved efficiency includes a carrier amplifier 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 is disclosed. A plurality of peak amplifiers are connected in parallel with the carrier amplifier with each of the peak amplifiers being biased to sequentially provide an amplified output signal after the carrier amplifier approaches saturation. The input signal is applied through a signal splitter to the carrier amplifier and the plurality of peak amplifiers, and an output for receiving amplified output signals from the carrier amplifier and the plurality of peak amplifiers includes a resistive load R/2. The split input signal is applied through a 90° transformer to the carrier amplifier, and the outputs of the peak amplifiers are applied through 90° transformers to a output load. When operating below saturation, the carrier amplifier delivers power to a load of 2R and the carrier amplifier delivers current to the load, which is one-half the current at maximum power when the amplifier is saturated. In one embodiment with the output having an impedance, Z, the carrier amplifier and each peak amplifier is connected to the output through an output-matching network presenting an output impedance of less than Z to each amplifier and with each output-matching network having selected phase length to reduce reactance of the output impedance.

摘要翻译： 用于以宽的功率范围放大RF信号并具有提高的效率的RF功率放大器电路包括用于在第一功率范围上放大RF信号的载波放大器，并且功率饱和电平低于宽范围功率的最大值 披露。 多个峰值放大器与载波放大器并联连接，每个峰值放大器被偏置以在载波放大器接近饱和之后顺序地提供放大的输出信号。 输入信号通过信号分离器施加到载波放大器和多个峰值放大器，并且用于接收来自载波放大器和多个峰值放大器的放大输出信号的输出包括电阻负载R / 2。 分离输入信号通过90°变压器施加到载波放大器，峰值放大器的输出通过90°变压器施加到输出负载。 当工作在饱和以下时，载波放大器向2R负载提供电源，载波放大器向负载提供电流，当放大器饱和时，该电流为最大功率时的电流的一半。 在输出具有阻抗Z的一个实施例中，载波放大器和每个峰值放大器通过输出匹配网络连接到输出端，输出匹配网络向每个放大器呈现小于Z的输出阻抗，并且每个输出匹配网络已经选择 相位长度以减小输出阻抗的电抗。

公开(公告)号：EP1620325A4

公开(公告)日：2006-08-09

申请号：EP04749959

申请日：2004-04-09

申请人： CREE MICROWAVE LLC

发明人： PENGELLY RAYMOND SYDNEY ,  WOOD SIMON MAURICE

IPC分类号： H03F1/02 ,  H03F3/68 ,  B65D51/16 ,  B65D51/24 ,  H01L20060101 ,  H03F1/07 ,  H03F1/32 ,  H03F3/19 ,  H03F3/24 ,  H03F3/60

CPC分类号： H03F1/0288 ,  H03F1/0277 ,  H03F1/32 ,  H03F3/602 ,  H03F2200/451 ,  H03F2201/3203

摘要： An RF power amplifier circuit for amplifying an RF signal over a broad range of power with improved efficiency includes a carrier amplifier 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 is disclosed. One or more peak amplifiers are connected in parallel with the carrier amplifier with each of the peak amplifiers being biased to sequentially provide an amplified output signal after the carrier amplifier approaches saturation. The input signal is applied through a signal splitter to the carrier amplifier and the plurality of peak amplifiers, and an output for receiving amplified output signals from the carrier amplifier and the plurality of peak amplifiers includes a resistive load R/2. The split input signal is applied through a 90° transformer to the carrier amplifier, and the outputs of the peak amplifiers are applied through 90° transformers to a output load. When operating below saturation, the carrier amplifier delivers power to a load of 2R when the carrier amplifier delivers current to the load, which is one-half the current at maximum power and the amplifier is saturated. The signal splitter can split the input signal power equally among the carrier and one or more peak amplifiers, or the input signal can be split unequally with the carrier amplifier receiving less input power than each of the peak amplifiers and vice versa.

公开(公告)号：EP1569329A4

公开(公告)日：2006-08-02

申请号：EP03813294

申请日：2003-11-26

申请人： DENSO CORP

发明人： MIZUNO KAZUO ,  KIMURA RYU ,  KAGO YOSHIYUKI ,  TANAKA YUKIOMI ,  ENDO KAZUHIKO ,  UDA HISANORI ,  HAYASHI HIROAKI

IPC分类号： H03F3/45 ,  H03D1/10 ,  H03D1/18 ,  H03F3/68

CPC分类号： H03D1/10 ,  H03D1/18

摘要： In an activation signal output circuit having an RF/DC converting circuit for receiving a high frequency power (RF) of a particular frequency to output a DC potential (DC), there is provided a detecting/amplifying part (210) comprising a voltage doubler detector circuit (10) having a detection diode Q1 (Tr34) for detecting a high frequency power; a differential amplifier having a differential pair of transistors (Tr31,Tr32); and a current mirror circuit, wherein the base current of one of the differential pair of transistors (Tr31) is caused to be approximately equal to the DC component of a current flowing through the detection diode Q1 (Tr34), and the sum of currents flowing through the differential pair of transistors (Tr31,Tr32) is caused to be approximately constant by the current mirror circuit. In this way, an activation signal output circuit can be realized which is small-sized and exhibits a high sensitivity and a low power consumption.

公开(公告)号：EP1515434A4

公开(公告)日：2006-03-29

申请号：EP03733370

申请日：2003-06-11

申请人： MITSUBISHI ELECTRIC CORP

发明人： UEDA HIROOMI ,  SHINJO SHINTARO ,  SUEMATSU NORIHARU ,  MORI KAZUTOMI ,  INOUE AKIRA ,  OHTA AKIRA ,  SEKI HIROAKI

IPC分类号： H03F1/30 ,  H03F1/32 ,  H03F3/19 ,  H03F3/68

CPC分类号： H03F1/3223 ,  H03F1/30 ,  H03F3/19 ,  H03F3/68 ,  H03F2200/18

摘要： A high-frequency amplifier comprises a constant voltage drive amplifier (1) using a bipolar transistor (7) the base of which is biased by a constant voltage and which serves as an amplifying element and a constant current driven amplifier (2) using a bipolar transistor (8) the base of which is biased by a constant current. The idle current value of the constant current driven amplifier (2) is set low, and the idle current value of the constant voltage driven amplifier (1) is correspondingly adjusted, thus achieving parallel composition.

公开(公告)号：EP1573908A1

公开(公告)日：2005-09-14

申请号：EP03768732.4

申请日：2003-11-04

申请人： Cree Microwave, Inc.

发明人： PENGELLY, Raymond, S. ,  WOOD, Simon, M. ,  QUINN, John, P.

IPC分类号： H03F3/68

CPC分类号： H03F3/602 ,  H03F1/3205 ,  H03F3/211

摘要： The linearity of a transistor amplifier comprising a plurality of transistors operating parallel is improved by reducing the odd order transconductance derivatives of signals generated by the transistors. The transistors can be provided in groups with each group having a different bias voltage applied thereto or each group of transistors can have a different input signal applied thereto. The groups of transistors can have different physical parameters suchas the width to length ratio of gates in field effect transistors and threshold voltages for the transistors.

公开(公告)号：EP1570572A1

公开(公告)日：2005-09-07

申请号：EP03790018.0

申请日：2003-11-24

申请人： Cree Microwave, Inc.

发明人： PENGELLY, Raymond, Sydney ,  WOOD, Simon, Maurice ,  QUINN, John, Phillip

IPC分类号： H03F3/68

CPC分类号： H03F3/602 ,  H01L23/66 ,  H01L24/48 ,  H01L24/49 ,  H01L25/072 ,  H01L2223/6644 ,  H01L2224/48091 ,  H01L2224/49111 ,  H01L2924/00014 ,  H01L2924/01005 ,  H01L2924/01006 ,  H01L2924/01014 ,  H01L2924/01023 ,  H01L2924/10329 ,  H01L2924/1305 ,  H01L2924/13055 ,  H01L2924/1306 ,  H01L2924/13063 ,  H01L2924/13064 ,  H01L2924/19043 ,  H01L2924/3011 ,  H01L2924/30111 ,  H01L2924/00 ,  H01L2224/45099 ,  H01L2224/05599

摘要： Disclosed are a multi-chip power amplifier comprising a plurality of chips (20-23) with each chip being a transistor amplifier, and a housing (36) in which all of the semiconductor chips are mounted. A plurality of input leads extend into the housing and a plurality of output leads extend from the housing. A plurality of first matching networks (38) couple a semiconductor chip to an input lead and a plurality of second matching networks (40) couple each semiconductor chip to an output lead whereby each chip has its own input lead and output lead. By providing all amplifier chips within a single housing with matching networks within the housing coupling the chips to the input and output leads, manufacturing cost is reduced and the overall package footprint on a mounting substrate is reduced. Further, the close proximity of the chips within the housing reduces phase differences among signals in the semiconductor chips.

公开(公告)号：EP1506615A4

公开(公告)日：2005-08-10

申请号：EP03721932

申请日：2003-04-29

申请人： MOTOROLA INC

发明人： LUZ YUDA ,  CHEN JIANGNAN JASON ,  ZHOU PHILIP

IPC分类号： H03F3/68 ,  H03F3/24 ,  H03F3/60 ,  H04B1/04 ,  H03F3/38

CPC分类号： H03F3/24 ,  H03F1/34 ,  H03F3/602 ,  H04B1/0483 ,  H04B2001/0433

摘要： A base station subsystem (102) includes at least one transmit branch (300) having a forward path (301) that includes a signal processing unit (330) coupled at an input to an input Fourier Transform Matrix (FTM) (320) and at an output to an output FTM (360). The transmit branch further includes two error compensation loops, an inner feedback loop that includes an inner loop feedback circuit (302) and an outer feedback loop that includes an outer loop feedback circuit (303). The inner feedback loop provides error compensation for error introduced by the signal processing section to a signal input to the transmit branch. The outer loop provides error compensation for all residual error introduced into the signal when routed through the transmit branch forward path after error compensation may be performed by the inner feedback loop.

公开(公告)号：EP0954823B1

公开(公告)日：2005-05-18

申请号：EP98951988.9

申请日：1998-09-30

申请人： Mars Incorporated

发明人： ZOLADZ, Edward, M., Jr.

IPC分类号： G06K7/00 ,  H03F3/68 ,  H03G1/00

CPC分类号： H03G3/3084 ,  G07D7/121 ,  H03G1/0023

摘要： An optical sensor system for use in a currency validator is described. The system includes a microcontroller (32), a plurality of light transmitters (A, B, C, D, SL, SR, and CC), a plurality of light receivers (A, B, C, D, SL, SR, and CC) and a variable gain amplifier circuit (46) connected to the receivers (A, B, C, D, SL, SR, and CC) and to the microcontroller (37). The microcontroller (37) controls the gain of the variable gain amplifier circuit (46). The variable gain amplifier circuit (46) includes dual transconductance amplifiers (96, 97) connected together in such a manner to compensate for leakage current over a wide range of temperatures.

公开(公告)号：EP1470636A4

公开(公告)日：2005-05-04

申请号：EP03705926

申请日：2003-01-23

申请人： CREE MICROWAVE INC

发明人： PENGELLY RAYMOND SYDNEY

IPC分类号： H03F3/68 ,  H03F1/02 ,  H03F1/07 ,  H03F1/32 ,  H03F3/24 ,  H03F3/60

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.