公开(公告)号：EP1929639A1

公开(公告)日：2008-06-11

申请号：EP06779558.3

申请日：2006-09-26

申请人： GloNav Limited

发明人： CONTA, Matteo ,  DELLA TORRE, Valentina ,  SVELTO, Francesco ,  CUSMAI, Giuseppe

IPC分类号： H04B1/18 ,  H03F1/00

CPC分类号： H03F1/26 ,  H03F1/22 ,  H03F3/195 ,  H03F2200/111 ,  H03F2200/294 ,  H03F2200/372 ,  H03F2200/42 ,  H03F2200/48 ,  H03F2200/54 ,  H04B1/18 ,  H04B1/3805

摘要： A radio-frequency receiver for, e.g., receiving GPS signals in a cellular telephone has an input, a first gain stage in the form of a linear low noise amplifier with voltage- voltage feedback and a resonant load, and a second gain stage based on a common source input transconductor. Associated with the input and the first gain stage is a filter comprising a notch filter part for rejecting an interfering signal, e.g. a cell phone transmitter signal, and, connected between the parallel resonant circuit and the input, a series capacitance which, in combination with the inductor of the parallel-resonant circuit, forms a series-resonant circuit to provide a low impedance path at a wanted signal frequency.

公开(公告)号：EP0561346A1

公开(公告)日：1993-09-22

申请号：EP93104270.9

申请日：1993-03-16

申请人： MITSUBISHI DENKI KABUSHIKI KAISHA

发明人： Yoshinobu, Sasaki, c/o Mitsubishi Denki K. K.

IPC分类号： H03F1/32 ,  H03F1/02

CPC分类号： H03F1/0266 ,  H03F1/0261 ,  H03F1/301 ,  H03F1/306 ,  H03F1/3205 ,  H03F1/3223 ,  H03F2200/18 ,  H03F2200/192 ,  H03F2200/222 ,  H03F2200/228 ,  H03F2200/255 ,  H03F2200/387 ,  H03F2200/423 ,  H03F2200/48 ,  H03F2200/75

摘要： An amplifier for amplifying a high frequency signal comprises an input matching circuit, an output matching circuit, an FET whose gate and drain are connected to the input matching circuit and the output matching circuit, respectively, and a gate voltage control circuit for controlling a gate voltage in accordance with a power of the high frequency signal, which is connected to a junction node of an output end of the input matching circuit and the gate of the FET. The gate voltage control circuit comprises a diode whose anode is connected to the gate, a capacitor disposed between a cathode of the diode and ground, and a gate bias setting circuit whose output is connected to a junction node of the diode and the capacitor. The gate bias setting circuit outputs a control voltage corresponding to a power of the high frequency signal. As the result, the matching of the output matching circuit is not deviated and a linearity of the output power to the input power is kept in a good state, resulting in an amplifier with high efficiency.

摘要翻译： 用于放大高频信号的放大器包括输入匹配电路，输出匹配电路，其栅极和漏极分别连接到输入匹配电路和输出匹配电路的FET，以及用于控制栅极和栅极的栅极电压控制电路 根据连接到输入匹配电路的输出端和FET的栅极的结点的高频信号的功率来产生电压。 栅极电压控制电路包括二极管，其阳极连接到栅极，电容器设置在二极管的阴极和地之间，以及栅极偏置设置电路，其输出连接到二极管和电容器的结点。 栅极偏压设定电路输出对应于高频信号的功率的控制电压。 结果，输出匹配电路的匹配没有偏差，并且输出功率对输入功率的线性保持在良好的状态，从而导致高效率的放大器。

公开(公告)号：EP0524772A2

公开(公告)日：1993-01-27

申请号：EP92306534.6

申请日：1992-07-16

申请人： Matra Marconi Space UK Limited

发明人： Tondryk, Wieslaw Jan

IPC分类号： H03F1/02 ,  H03F1/32 ,  H03F3/19 ,  H03G1/04 ,  H03G3/20

CPC分类号： H03F3/19 ,  H03F1/0261 ,  H03F1/302 ,  H03F2200/222 ,  H03F2200/387 ,  H03F2200/42 ,  H03F2200/48 ,  H03F2200/534 ,  H03F2200/541 ,  H03F2200/75 ,  H03G1/04

摘要： A microwave power amplifier having application in multiple beam phased antenna array systems and including biasing means connection to the base of a microwave transistor and responsive to radio frequency signals applied to the amplifier to automatically adjust the transistor bias level to maintain constant amplifier gain. The biasing means includes two voltage regulators (1,2) with their outputs capacitively coupled via a fixed resistor (4) of value determined by the characteristics of the transistor, the base of the transistor being connected to the biasing means at the junction of the resistor and the capacitive coupling of one of the regulators. The mode of operation of the power amplifier gives rise to a highly efficient linear system while under effective Class B (non-linear) bias.

摘要翻译： 一种微波功率放大器，其应用于多波束相控天线阵列系统，并且包括连接到微波晶体管的基极的偏置装置，并响应于施加到放大器的射频信号来自动调节晶体管偏置电平以保持恒定的放大器增益。 偏置装置包括两个电压调节器（1,2），其输出通过由晶体管的特性确定的值的固定电阻器（4）电容耦合，晶体管的基极连接到偏置装置 电阻和其中一个稳压器的电容耦合。 在有效的B类（非线性）偏置的情况下，功率放大器的工作模式产生高效的线性系统。

公开(公告)号：EP3065293A1

公开(公告)日：2016-09-07

申请号：EP16154839.1

申请日：2016-02-09

申请人： FUJITSU LIMITED

发明人： SATO, Masaru ,  KURAHASHI, Naoko

IPC分类号： H03F3/60 ,  H03F3/195 ,  H03F1/42 ,  H03F3/72 ,  H03F1/18 ,  H03F3/193

CPC分类号： H03F1/0205 ,  H03F1/0288 ,  H03F1/07 ,  H03F1/18 ,  H03F1/42 ,  H03F1/56 ,  H03F3/193 ,  H03F3/195 ,  H03F3/604 ,  H03F3/607 ,  H03F3/72 ,  H03F2200/27 ,  H03F2200/315 ,  H03F2200/36 ,  H03F2200/42 ,  H03F2200/423 ,  H03F2200/451 ,  H03F2200/48 ,  H03F2200/519 ,  H03F2200/555 ,  H03F2200/75 ,  H03F2203/7227

摘要： A distributed amplifier includes: an input-side transmission line; M amplification circuits; M output-side transmission lines; and a combination circuit configured to combine outputs of the M output-side transmission lines; wherein the input-side transmission line has an input-side serial line formed by connecting in series M×N unit transmission lines each including the same line length, and an input-side terminating resistor, the M amplification circuits each includes N amplifiers and the N amplifiers of the i-th amplification circuit take the input node of the ((k - 1) M + i)-th input-side transmission line to be the input, and the output-side transmission line includes an output-side serial line including N transmission lines each being connected in series between the neighboring outputs of the N amplifiers and each having a line width in which the phase of the output of the amplifier in each stage agrees with one another.

摘要翻译： 分布式放大器包括：输入侧传输线; M放大电路; M输出侧传输线; 以及组合电路，被配置为组合M个输出侧传输线的输出; 其中输入侧传输线具有通过串联连接包括相同线路长度的M×N个单元传输线和输入侧终端电阻而形成的输入侧串行线，M个放大电路各自包括N个放大器和 第N放大电路的N个放大器将（（k-1）M + i）输入侧传输线的输入节点作为输入，输出侧传输线包括输出侧串行 线路，其包括N个传输线，每个传输线串联连接在N个放大器的相邻输出端之间，并且每个传输线具有每个级中的放大器的输出相位彼此一致的线宽度。

公开(公告)号：EP2862273A4

公开(公告)日：2016-04-13

申请号：EP13805010

申请日：2013-06-13

申请人： SKYWORKS SOLUTIONS INC

发明人： CHEN HOWARD E ,  GUO YIFAN ,  HOANG DINHPHUOC VU ,  JANANI MEHRAN ,  KO TIN MYINT ,  LEHTOLA PHILIP JOHN ,  LOBIANCO ANTHONY JAMES ,  MODI HARDIK BHUPENDRA ,  NGUYEN HOANG MONG ,  OZALAS MATTHEW THOMAS ,  PETTY-WEEKS SANDRA LOUISE ,  READ MATTHEW SEAN ,  RIEGE JENS ALBRECHT ,  RIPLEY DAVID STEVEN ,  SHAO HONGXIAO ,  SHEN HONG ,  SUN WEIMIN ,  SUN HSIANG-CHIH ,  WELCH PATRICK LAWRENCE ,  ZAMPARDI PETER J JR ,  ZHANG GUOHAO

IPC分类号： H03F1/30 ,  H01L21/60 ,  H01L23/498 ,  H01L23/552 ,  H01L23/66 ,  H01L27/06 ,  H03F3/189

CPC分类号： H03F1/0205 ,  H01L21/485 ,  H01L21/4853 ,  H01L21/4864 ,  H01L21/565 ,  H01L21/76898 ,  H01L21/78 ,  H01L21/8249 ,  H01L21/8252 ,  H01L22/14 ,  H01L23/3114 ,  H01L23/481 ,  H01L23/49811 ,  H01L23/49827 ,  H01L23/49838 ,  H01L23/49844 ,  H01L23/49861 ,  H01L23/49866 ,  H01L23/49894 ,  H01L23/50 ,  H01L23/522 ,  H01L23/552 ,  H01L23/66 ,  H01L24/45 ,  H01L24/48 ,  H01L24/49 ,  H01L24/85 ,  H01L24/97 ,  H01L27/0605 ,  H01L27/0623 ,  H01L27/092 ,  H01L29/0684 ,  H01L29/0821 ,  H01L29/0826 ,  H01L29/1004 ,  H01L29/20 ,  H01L29/205 ,  H01L29/36 ,  H01L29/66242 ,  H01L29/66863 ,  H01L29/737 ,  H01L29/7371 ,  H01L29/812 ,  H01L29/8605 ,  H01L2223/6611 ,  H01L2223/6616 ,  H01L2223/6644 ,  H01L2223/665 ,  H01L2223/6655 ,  H01L2224/05155 ,  H01L2224/05164 ,  H01L2224/05644 ,  H01L2224/45015 ,  H01L2224/45139 ,  H01L2224/45144 ,  H01L2224/45147 ,  H01L2224/48177 ,  H01L2224/48227 ,  H01L2224/48465 ,  H01L2224/48611 ,  H01L2224/48644 ,  H01L2224/48647 ,  H01L2224/48655 ,  H01L2224/48664 ,  H01L2224/48811 ,  H01L2224/48816 ,  H01L2224/48844 ,  H01L2224/48847 ,  H01L2224/48855 ,  H01L2224/48864 ,  H01L2224/4903 ,  H01L2224/49111 ,  H01L2224/49176 ,  H01L2224/85205 ,  H01L2224/85207 ,  H01L2224/85411 ,  H01L2224/85416 ,  H01L2224/85444 ,  H01L2224/85455 ,  H01L2224/85464 ,  H01L2924/00011 ,  H01L2924/10253 ,  H01L2924/10329 ,  H01L2924/12033 ,  H01L2924/12042 ,  H01L2924/1305 ,  H01L2924/13051 ,  H01L2924/1306 ,  H01L2924/13091 ,  H01L2924/1421 ,  H01L2924/15747 ,  H01L2924/181 ,  H01L2924/19105 ,  H01L2924/19107 ,  H01L2924/3011 ,  H01L2924/30111 ,  H01L2924/3025 ,  H03F1/565 ,  H03F3/187 ,  H03F3/19 ,  H03F3/195 ,  H03F3/21 ,  H03F3/213 ,  H03F3/245 ,  H03F3/347 ,  H03F3/45 ,  H03F3/60 ,  H03F2200/387 ,  H03F2200/451 ,  H03F2200/48 ,  H03F2200/555 ,  H01L2924/00 ,  H01L2924/00014

摘要： A system for biasing a power amplifier module, where the module comprises:a first die (409) including a power amplifier circuit (415) and a passive component (412)having an electrical property that depends on one or more conditions of the first die, anda second die (414) including a bias signal generating circuit (413) that is configured to generate a bias signal based at least in part on measurement of the electrical property of the passive component of the first die.

公开(公告)号：EP2915249A2

公开(公告)日：2015-09-09

申请号：EP13850773.6

申请日：2013-10-30

申请人： Rfaxis, Inc.

发明人： GORBACHOV, Oleksandr

IPC分类号： H03F3/20

CPC分类号： H03F1/0227 ,  H03F1/0238 ,  H03F1/0255 ,  H03F1/0272 ,  H03F1/30 ,  H03F3/19 ,  H03F3/193 ,  H03F3/245 ,  H03F2200/108 ,  H03F2200/126 ,  H03F2200/129 ,  H03F2200/15 ,  H03F2200/18 ,  H03F2200/21 ,  H03F2200/234 ,  H03F2200/393 ,  H03F2200/42 ,  H03F2200/451 ,  H03F2200/459 ,  H03F2200/462 ,  H03F2200/465 ,  H03F2200/48 ,  H03F2200/481 ,  H03F2200/504 ,  H03F2200/75

摘要： A radio frequency (RF) power amplifier circuit with spur cancellation for GSM/GPRS/EDGE transceivers is disclosed. There is a power amplifier with an RF input, an RF output, and a voltage supply input. Additionally, there is an adjustable DC-DC converter with an input connected to a battery, an output connected to the voltage supply input of the power amplifier with a DC supply voltage signal generated thereby. A spur compensator generates an error control signal responsive to spurs in the DC supply voltage signal. The error control signal is applied to the RF input of the power amplifier.

公开(公告)号：EP2124331A1

公开(公告)日：2009-11-25

申请号：EP09160166.6

申请日：2009-05-13

申请人： STMicroelectronics S.r.l.

发明人： Forte, Federico

IPC分类号： H03F1/30 ,  H03G3/34 ,  H03F3/217

CPC分类号： H03F1/305 ,  H03F3/217 ,  H03F2200/03 ,  H03F2200/345 ,  H03F2200/351 ,  H03F2200/48 ,  H04R3/00

摘要： An amplification circuit for driving an audio signal diffuser is disclosed. The amplification circuit comprises a generation circuit of a first pre-charging signal, comprises an amplifier provided with an input terminal for receiving the first pre-charging signal and provided with an output terminal for providing a second pre-charging signal, as a function of the first pre-charging signal, and comprises an decoupling capacitor of the amplifier from the diffuser, wherein the capacitor is connected to the output terminal to be charged by the second pre-charging signal.

摘要翻译： 公开了一种用于驱动音频信号扩散器的放大电路。 放大电路包括第一预充电信号的发生电路，包括具有用于接收第一预充电信号的输入端的放大器，并且具有用于提供第二预充电信号的输出端，作为 第一预充电信号，并且包括放大器与扩散器的去耦电容器，其中电容器连接到输出端子以由第二预充电信号充电。

公开(公告)号：EP1892828A1

公开(公告)日：2008-02-27

申请号：EP07115022.1

申请日：2007-08-27

申请人： Samsung Electronics Co., Ltd.

发明人： Jung, Byeng-Sang, c/o Samsung Electr. Co., Ltd. ,  Kim, Hark-Soo, c/o Samsung Electr. Co., Ltd.

IPC分类号： H03F1/30

CPC分类号： H03F1/305 ,  H03F2200/03 ,  H03F2200/345 ,  H03F2200/351 ,  H03F2200/417 ,  H03F2200/48 ,  H03G3/348

摘要： An audio output apparatus having an audio codec for generating audio signals delivered to a speaker is provided with a device for preventing an audio pop noise caused by the bias voltage output from the audio codec, which includes a capacitor connected between an output end of the audio codec and the speaker, a capacitor charger for smoothly charging the capacitor to a predetermined voltage level, a switch arranged between the junction of the output end of the audio codec and the capacitor and the capacitor charger, and a control unit for controlling the codec, wherein the control unit turns on the switch and drives the capacitor charger before activating the audio codec, and then turns off the switch and terminates the operation of the capacitor charger if a predetermined charging time has elapsed. A method for preventing the audio pop noise caused by a bias voltage output from the audio codec includes smoothly charging the capacitor to have the same voltage level as the bias voltage of the audio codec before activating the audio codec, and activating the audio codec.

摘要翻译： 具有用于产生传递到扬声器的音频信号的音频编解码器的音频输出装置设置有用于防止由音频编解码器输出的偏置电压引起的音频弹出噪声的装置，该装置包括连接在音频的输出端之间的电容器 编解码器和扬声器，用于将电容器平滑地充电到预定电压电平的电容器充电器，布置在音频编解码器的输出端的接头与电容器之间的开关和电容器充电器，以及用于控制编解码器的控制单元， 其中所述控制单元在激活所述音频编解码器之前接通所述开关并驱动所述电容器充电器，然后如果经过预定充电时间，则关闭所述开关并终止所述电容器充电器的操作。 一种用于防止由音频编解码器输出的偏置电压引起的音频弹出噪声的方法包括在激活音频编解码器之前平滑地对电容器充电以使其具有与音频编解码器的偏置电压相同的电压电平，以及激活音频编解码器。

公开(公告)号：EP3411950A1

公开(公告)日：2018-12-12

申请号：EP16702935.4

申请日：2016-02-04

申请人： Fraunhofer Gesellschaft zur Förderung der angewandten Forschung E.V.

发明人： VAN RAAY, Friedbert

IPC分类号： H03F3/24 ,  H03F1/02 ,  H03F1/56 ,  H03F3/195 ,  H03F3/42 ,  H03F3/45 ,  H03F3/60 ,  H03F1/52

CPC分类号： H03F3/211 ,  H01Q23/00 ,  H03F1/523 ,  H03F1/56 ,  H03F1/565 ,  H03F3/195 ,  H03F3/245 ,  H03F3/423 ,  H03F3/45183 ,  H03F3/45475 ,  H03F3/604 ,  H03F3/607 ,  H03F2200/06 ,  H03F2200/108 ,  H03F2200/135 ,  H03F2200/181 ,  H03F2200/222 ,  H03F2200/255 ,  H03F2200/297 ,  H03F2200/301 ,  H03F2200/315 ,  H03F2200/318 ,  H03F2200/387 ,  H03F2200/42 ,  H03F2200/423 ,  H03F2200/451 ,  H03F2200/48 ,  H03F2200/498 ,  H03F2200/75 ,  H03F2203/45138 ,  H03F2203/45148 ,  H03F2203/45151 ,  H03F2203/45156 ,  H03F2203/45166 ,  H03F2203/45202 ,  H03F2203/45208 ,  H03F2203/45224 ,  H03F2203/45258 ,  H03F2203/45338 ,  H03F2203/45458 ,  H03F2203/45488 ,  H03F2203/45496 ,  H03F2203/45528 ,  H03F2203/45544 ,  H03F2203/45594 ,  H03F2203/45631 ,  H03F2203/45696 ,  H03F2203/45702

摘要： A power amplifier includes a two-dimensional matrix of N×M active cells formed by stacking main terminals of multiple active cells in series. The stacks are coupled in parallel to form the two-dimensional matrix. The power amplifier includes a driver structure to coordinate the driving of the active cells so that the effective output power of the two-dimensional matrix is approximately N×M the output power of each of the active cells.

公开(公告)号：EP3407489A1

公开(公告)日：2018-11-28

申请号：EP17202320.2

申请日：2017-11-17

申请人： Tymphany HK Limited

发明人： DE VRIES, Sebastiaan

IPC分类号： H03F3/187 ,  H03F3/45 ,  H04R3/00 ,  H03F3/72 ,  H03F1/56 ,  H03F3/68

CPC分类号： H03F3/45475 ,  H03F1/56 ,  H03F3/187 ,  H03F3/68 ,  H03F2200/03 ,  H03F2200/222 ,  H03F2200/261 ,  H03F2200/42 ,  H03F2200/48 ,  H03F2203/7233 ,  H04R3/00 ,  H04R2420/09

摘要： A switchless pre-amplifier input circuit includes an audio input connector that receives a first audio device operable at a first impedance and a second audio device operable at a second impedance less than the first impedance. A preamplifier circuit outputs a pre-amplified audio signal in response to amplifying a first audio signal generated by the first audio device or a second audio signal generated by the second audio device. The switchless pre-amplifier input circuit further includes a impedance selector circuit that adjusts an impedance at the output to reach the second impedance in response to connecting the second audio device to the audio input connector and to adjust the impedance at the output to reach the first impedance in response to connecting the first audio device to the audio input.