公开(公告)号：EP1783898A2

公开(公告)日：2007-05-09

申请号：EP06022702.2

申请日：2006-10-31

申请人： Marvell World Trade Ltd.

发明人： Sutardja, Sehat

IPC分类号： H03F3/45

CPC分类号： H03F3/45183 ,  H03F1/08 ,  H03F3/26 ,  H03F2200/36

摘要： An amplifier circuit includes a first transistor having a control terminal that receives a first amplifier input, a first terminal, and a second. The amplifier circuit includes a transimpedance amplifier having an input that communicates with the first terminal of the first transistor, and an output. The amplifier circuit includes an output amplifier having an input that communicates with the output of the transimpedance amplifier and an output.

摘要翻译： 放大器电路包括具有接收第一放大器输入，第一端子和第二端子的控制端子的第一晶体管。 放大器电路包括跨阻抗放大器和输出，跨阻抗放大器具有与第一晶体管的第一端子通信的输入。 放大器电路包括具有与跨阻放大器的输出端和输出端通信的输入端的输出放大器。

公开(公告)号：EP1614218A1

公开(公告)日：2006-01-11

申请号：EP04723689.8

申请日：2004-03-26

申请人： Koninklijke Philips Electronics N.V.

发明人： SANDULEANU, Mihai, A., T. ,  STIKVOORT, Eduard, F.

IPC分类号： H03F3/45

CPC分类号： H03F1/3211 ,  H03F1/08 ,  H03F3/45183 ,  H03F3/45928 ,  H03F2200/36 ,  H03F2203/45008 ,  H03F2203/45364 ,  H03F2203/45642 ,  H03F2203/45644 ,  H03F2203/45652 ,  H03F2203/45702

摘要： A linear amplifier circuit comprising a first differential amplifier (DA 1) having a differential input terminals (I+, I-) for receiving a binary input signal, and a differential output terminals (O+,O-), a second differential amplifier (DA2) having input terminals coupled to the differential input terminals (I+, I-). The amplifier further comprises, a third differential amplifier (DA3) coupled in cascade to the second differential amplifier (DA2) and having its output cross-coupled to the differential output terminals in a feed­forward connection, and a capacitor (C) coupled to the third differential amplifier (DA3) for determining an increase of a bandwidth of the linear amplifier, a current flowing through the capacitor (C) being proportional with a derivative of the differential input signal (I+, I-).

摘要翻译： 线性放大器电路包括具有用于接收二进制输入信号的差分输入端（I +，I-）和差分输出端（O +，O-）的第一差分放大器（DA1），第二差分放大器（DA2） 具有耦合到差分输入端子（I +，I-）的输入端子。 该放大器进一步包括与第二差分放大器（DA2）级联耦合的第三差分放大器（DA3），其输出端以前馈连接方式交叉耦合到差分输出端，以及电容器（C）耦合到第三差分放大器 差分放大器（DA3），用于确定线性放大器带宽的增加，流过电容器（C）的电流与差分输入信号（I +，I-）的导数成比例。

公开(公告)号：EP1441341A2

公开(公告)日：2004-07-28

申请号：EP04250285.6

申请日：2004-01-20

申请人： STMicroelectronics, Inc.

发明人： Posat, Baris ,  Ozanoglu, Kemal ,  Venca, Alessandro

IPC分类号： G11B20/00 ,  G11B5/00

CPC分类号： G11B20/10009 ,  G11B5/02 ,  G11B5/09 ,  G11B2005/0013 ,  G11B2005/0029 ,  H03F1/42 ,  H03F3/45278 ,  H03F2200/36 ,  H03F2200/432 ,  H03F2203/45318 ,  H03F2203/45544 ,  H03F2203/45594 ,  H03F2203/45648

摘要： An amplifying circuit and method are disclosed for amplifying electrical signals, such as electrical signals generated by the read head of a disk drive. The circuit includes a pair of cross-coupled differential amplifier circuits. Each differential amplifier circuit is asymmetric, including two input transistors of different transistor types. For instance, a first of the two input transistors of each differential amplifier circuit may be a bipolar transistor and a second of the two input transistors may be a field effect transistor. By utilizing asymmetric differential amplifier circuits, a relatively wider operating frequency range is obtained.

公开(公告)号：EP0920125A3

公开(公告)日：2001-10-17

申请号：EP98122440.5

申请日：1998-11-26

申请人： NEC CORPORATION

发明人： Kakuta, Yuji ,  Fukasawa, Yoshiaki ,  Taguchi, Yuichi

IPC分类号： H03F3/26

CPC分类号： H03F1/22 ,  H03F1/42 ,  H03F3/26 ,  H03F2200/36 ,  H03F2200/534 ,  H03F2200/541 ,  H03F2200/63

摘要： A push-pull wideband semiconductor amplifier for use in, for example, a CATV (cable television) system which suppresses deterioration of composite second-order (CSO) distortion in output signals. The push-pull wideband amplifier includes: a divider which divides a signal inputted by way of an input terminal into two signals of differing phase, a first and second amplifying circuit each of which amplifies the signal divided by the divider, and a combiner which combines the two signals amplified by the first and second amplifying circuits into one signal and outputs the result signal. The node between the first amplifying circuit and the second amplifying circuit is an imaginary ground point having a potential of 0 V from the standpoint of an alternating-current signal. A termination circuit is provided between this imaginary ground point and ground and absorbs fluctuation in potential generated at the imaginary ground point. In the event of fluctuation in potential generated at the imaginary ground point, the fluctuation in potential is absorbed by the termination circuit. The standing wave that accompanies fluctuation in potential is therefore not generated, and even-order distortion is suppressed.

摘要翻译： 一种用于例如CATV（有线电视）系统的推挽式宽带半导体放大器，其抑制输出信号中复合二阶（CSO）失真的劣化。 推挽式宽带放大器包括：除法器，其将通过输入端子输入的信号分成两个不同相位的信号;第一和第二放大电路，其每个放大由分频器分频的信号;以及组合器，其组合 由第一和第二放大电路放大的两个信号变成一个信号并输出​​结果信号。 第一放大电路和第二放大电路之间的节点是从交流信号的观点出发具有0V的电位的虚拟接地点。 在该虚拟接地点和地之间设置终端电路，并吸收在虚拟接地点产生的电位波动。 在虚拟接地点产生的电位波动的情况下，电位的波动由终端电路吸收。 因此不产生伴随电位波动的驻波，抑制偶数阶失真。

公开(公告)号：EP1901425B1

公开(公告)日：2018-08-08

申请号：EP06019088.1

申请日：2006-09-12

申请人： Realtek Semiconductor Corp.

发明人： Tu, Chuan Ping

IPC分类号： H03F1/48 ,  H03F3/45

CPC分类号： H03F3/45192 ,  H03F1/483 ,  H03F3/45188 ,  H03F2200/36 ,  H03F2203/45126 ,  H03F2203/45322 ,  H03F2203/45356 ,  H03F2203/45682

摘要： An amplifier with increased bandwidth by current injection and a method thereof. The amplifier includes an input stage (22) for receiving a first input signal, a load stage (24) coupled to the input stage (22) for generating a first output signal, a first current source (M9) coupled to the input stage (22) for allowing a predetermined current to flow, and a second current source (26,28), coupled to the input stage (22), for injecting a first current into the input stage for outputting the first output signal.

公开(公告)号：EP2603973B1

公开(公告)日：2018-07-18

申请号：EP11749133.2

申请日：2011-08-03

申请人： Rohde & Schwarz GmbH & Co. KG

发明人： SCHENK, Lothar

IPC分类号： H03F1/02 ,  H03F1/42 ,  H03F1/56 ,  H03F3/60

CPC分类号： H03F1/0288 ,  H03F1/0261 ,  H03F1/42 ,  H03F1/56 ,  H03F3/602 ,  H03F2200/192 ,  H03F2200/198 ,  H03F2200/204 ,  H03F2200/222 ,  H03F2200/36 ,  H03F2200/387 ,  H03F2200/414 ,  H03F2200/417 ,  H03F2200/423 ,  H03F2200/543

公开(公告)号：EP2983291B1

公开(公告)日：2017-12-06

申请号：EP14290235.2

申请日：2014-08-07

申请人： Ampleon Netherlands B.V.

发明人： Moronval, Xavier ,  Bouny, Jean-Jacques ,  Bouisse, Gerard

IPC分类号： H03F1/02 ,  H03F3/195 ,  H03F1/56 ,  H03F3/24 ,  H01L23/66

CPC分类号： H03F1/0288 ,  H01L23/66 ,  H01L2223/6611 ,  H01L2223/6644 ,  H03F1/565 ,  H03F3/195 ,  H03F3/245 ,  H03F2200/225 ,  H03F2200/36 ,  H03F2200/391 ,  H03F2200/408

摘要： A die is described comprising at least one 3-way Doherty amplifier (100) comprising a main stage (120), a first peak stage (130) and a second peak stage(140). An input network (110) includes a first impedance connected to an input of the first peak stage (130) and providing a -90° phase shift and a second impedance connected to an input of the second peak stage (140) and providing a 90° phase shift. An output network (150) includes a third impedance connected to the output of the first peak stage (130) and providing a 180° phase shift and a fourth impedance connected to the output of the main stage (120) and providing a 90° phase shift.

公开(公告)号：EP3046253A4

公开(公告)日：2017-06-21

申请号：EP13893254

申请日：2013-09-12

申请人： NEC CORP

发明人： TANIMOTO TAKUYA

IPC分类号： H03F1/07 ,  H03F1/02 ,  H03F3/189 ,  H03F3/19 ,  H03F3/24

CPC分类号： H03F1/0288 ,  H03F1/07 ,  H03F3/189 ,  H03F3/19 ,  H03F3/24 ,  H03F3/245 ,  H03F2200/36 ,  H03F2200/423 ,  H03F2200/451

摘要： A Doherty amplifier (10) according to the present invention includes: a distribution unit (11) that distributes input signals; a main amplifier (12) that amplifies a first distributed signal output from the distribution unit (11); a transmission line unit (13) that transmits the first distributed signal amplified by the main amplifier (12); a peak amplifier (14) that amplifies a second distributed signal output from the distribution unit (11); a transmission line unit (15) that transmits the second distributed signal amplified by the peak amplifier (14); a synthesizing unit (16) that synthesizes the first distributed signal and the second distributed signal, and outputs a synthesized signal; and an impedance transformation unit (17) that performs an impedance transformation of the synthesized signal output from the synthesizing unit (16). The impedance transformation unit (17) includes a plurality of »/4 transmission lines connected in series.

摘要翻译： 根据本发明的Doherty放大器（10）包括：分配单元（11），其分配输入信号; 主放大器（12），其放大从所述分配单元（11）输出的第一分配信号; 传输线单元（13），其传输由主放大器（12）放大的第一分配信号; 峰值放大器（14），其放大从所述分配单元（11）输出的第二分配信号; 传输线单元（15），其传输由峰值放大器（14）放大的第二分配信号; 合成单元（16），其合成所述第一分配信号和所述第二分配信号，并输出合成信号; 以及阻抗变换单元（17），其执行从合成单元（16）输出的合成信号的阻抗变换。 阻抗变换单元（17）包括串联连接的多个π/ 4传输线。

公开(公告)号：EP3095186A1

公开(公告)日：2016-11-23

申请号：EP14718197.8

申请日：2014-01-14

申请人： Aselsan Elektronik Sanayi Ve Ticaret Anonim Sirket

发明人： UZUNOGLU, Erkan ,  YILMAZ, Ismail Gokhan

IPC分类号： H03F1/02 ,  H03F1/42 ,  H03F3/24 ,  H03F3/60

CPC分类号： H03F1/0288 ,  H03F1/42 ,  H03F3/24 ,  H03F3/60 ,  H03F2200/36 ,  H03F2200/541

摘要： The present invention relates to RF amplifiers and more specifically to Doherty amplifiers. This amplifier provides a wideband and compact impedance inverting and power combining network (5, 7) to improve the amplifier efficiency when handling a signal with a high peak-to-average ratio.

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。