公开(公告)号：US20140300403A1

公开(公告)日：2014-10-09

申请号：US14224553

申请日：2014-03-25

申请人： SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

发明人： Yuki Okamoto ,  Takayuki Ikeda ,  Yoshiyuki Kurokawa ,  Yasuhiko Takemura

IPC分类号： H03K3/356 ,  H03K3/012 ,  H03F3/45

CPC分类号： H03F3/45076 ,  H03F1/223 ,  H03F3/45179 ,  H03F3/45183 ,  H03F3/45237 ,  H03F2203/45394 ,  H03F2203/45518 ,  H03F2203/45674 ,  H03K19/018528

摘要： A level shifter converting a binary signal having a first potential and a second potential into a signal having the first potential and a third potential, and a signal processing circuit using the level shifter are provided. The first potential is higher than the second potential. The second potential is higher than the third potential. The potential difference between the first potential and the third potential may be more than or equal to 3 V and less than 4 V. The level shifter includes a current control circuit which generates a second signal for operating an amplifier circuit for a certain period in accordance with the potential change of the first signal which is input to the amplifier circuit. The output of level shifter is input to a gate of an N-channel transistor whose threshold voltage is lower than 0 V.

摘要翻译： 电平移位器将具有第一电位和第二电位的二进制信号转换为具有第一电位和第三电位的信号，以及使用电平转换器的信号处理电路。 第一个潜力高于第二个潜力。 第二个潜力高于第三个潜力。 第一电位和第三电位之间的电位差可以大于或等于3V且小于4V。电平移位器包括电流控制电路，其产生用于按照一定时间操作放大器电路的第二信号 其中输入到放大器电路的第一信号的电位变化。 电平移位器的输出输入到阈值电压低于0V的N沟道晶体管的栅极。

公开(公告)号：US20140218073A1

公开(公告)日：2014-08-07

申请号：US14160921

申请日：2014-01-22

申请人： STMICROELECTRONICS S.r.I.

发明人： Maurizio ZUFFADA ,  Enrico Stefano TEMPORITI MILANI ,  Antonio FINCATO

IPC分类号： H03K3/012

CPC分类号： H03K3/012 ,  G02F1/0121 ,  H03F3/4508 ,  H03F2203/45318 ,  H03F2203/45394 ,  H03K17/0416 ,  H03K17/10 ,  H03K19/0175

摘要： An electrical-optical modulator may function at high data rates and may be realized in comparably low cost silicon base technology, typically in BJT, BiCMOS or CMOS technologies. The output signal path may include a high transition frequency BJT and by using an active load constituted by a MOS driven by an inverted version of the modulating signal that drives the BJT, the falling edge of the output signal is sped up.

摘要翻译： 电光调制器可以以高数据速率工作，并且可以通过比较低成本的硅基技术实现，通常在BJT，BiCMOS或CMOS技术中。 输出信号路径可以包括高转换频率BJT，并且通过使用由驱动BJT的调制信号的反转版本驱动的MOS构成的有源负载，输出信号的下降沿被加快。

公开(公告)号：US08760196B2

公开(公告)日：2014-06-24

申请号：US13316724

申请日：2011-12-12

申请人： Xin Liu ,  Arvind Bomdica

发明人： Xin Liu ,  Arvind Bomdica

IPC分类号： H03K5/22

CPC分类号： H03F3/45179 ,  H03F3/45632 ,  H03F3/505 ,  H03F2200/78 ,  H03F2203/45394 ,  H03F2203/45418 ,  H03F2203/45478 ,  H03F2203/45562 ,  H03F2203/45648

摘要： A circuit for detecting out-of-band signals is disclosed. In one embodiment, the circuit includes a first differential circuit configured to level shift and positively rectify a differential input signal to produce a first output component of a differential output signal. The detector further includes a second differential circuit configured to level shift and negatively rectify the differential input signal to produce a second output component of the differential output signal. A third differential circuit is configured to level shift and output first and second fixed voltages based on an input reference voltage and a ground voltage. The circuit is configured to provide the differential output signal and the first and second fixed voltages to an indicator circuit configured to assert an indication responsive to detecting that a differential voltage of the differential output signal is greater than a differential voltage of the first and second fixed voltages.

摘要翻译： 公开了一种用于检测带外信号的电路。 在一个实施例中，电路包括第一差分电路，其被配置为对差分输入信号进行电平移位和正整流以产生差分输出信号的第一输出分量。 检测器还包括第二差分电路，其被配置为对差分输入信号进行电平偏移和负整流，以产生差分输出信号的第二输出分量。 第三差分电路被配置为基于输入参考电压和接地电压来电平移位和输出第一和第二固定电压。 电路被配置为将差分输出信号和第一和第二固定电压提供给指示器电路，该指示器电路被配置为响应于检测到差分输出信号的差分电压大于第一和第二固定的差分电压而断言指示 电压。

公开(公告)号：US20140112414A1

公开(公告)日：2014-04-24

申请号：US13907985

申请日：2013-06-03

申请人： MediaTek Singapore Pte. Ltd.

发明人： Chao Lu ,  Sang Won Son

IPC分类号： H04L27/36

CPC分类号： H04L27/368 ,  H03F3/189 ,  H03F3/211 ,  H03F3/24 ,  H03F3/45179 ,  H03F2200/378 ,  H03F2200/541 ,  H03F2203/45332 ,  H03F2203/45394

摘要： A power amplifier includes: a plurality of amplifying stages arranged to generate an output signal at an output terminal according to a phase-modulated signal and a plurality of amplitude-modulated signals, where each amplifying stage is arranged to receive the phase-modulated signal and one of the plurality of amplitude-modulated signals; an inductive circuit coupled between the output terminal and a first reference voltage; a matching circuit coupled between the output terminal and a loading circuit for providing a matching impedance between the output terminal and the loading circuit; and a capacitive circuit coupled to the output terminal for providing an adjustable capacitance to adjust a loading capacitance at the output terminal according to an adjusting signal; wherein the adjusting signal is indicative of a power of the output signal.

摘要翻译： 功率放大器包括：多个放大级，被布置为根据相位调制信号和多个幅度调制信号在输出端产生输出信号，其中每个放大级被布置成接收相位调制信号;以及 多个幅度调制信号中的一个; 耦合在所述输出端子和第一参考电压之间的感应电路; 耦合在所述输出端子和负载电路之间以在所述输出端子和所述负载电路之间提供匹配阻抗的匹配电路; 以及电容电路，其耦合到所述输出端子，用于提供可调电容，以根据调整信号调整所述输出端子处的负载电容; 其中所述调整信号指示所述输出信号的功率。

公开(公告)号：US20140035673A1

公开(公告)日：2014-02-06

申请号：US13828647

申请日：2013-03-14

申请人： RF MICRO DEVICES, INC.

发明人： Jeffery Peter Ortiz ,  Alexander Wayne Hietala

IPC分类号： H03F3/45

CPC分类号： H03F3/45076 ,  H03F1/0261 ,  H03F3/4508 ,  H03F2203/45244 ,  H03F2203/45294 ,  H03F2203/45394 ,  H03F2203/45481 ,  H03F2203/45542 ,  H03F2203/45621 ,  H03F2203/45731

摘要： Differential power amplifier circuitry includes a differential transistor pair, an input transformer, and biasing circuitry. The base contact of each transistor in the differential transistor pair may be coupled to the input transformer through a coupling capacitor. The coupling capacitors may be designed to resonate with the input transformer about a desired frequency range, thereby passing desirable signals to the differential transistor pair while blocking undesirable signals. The biasing circuitry may include a pair of emitter follower transistors, each coupled at the emitter to the base contact of each one of the transistors in the differential transistor pair and adapted to bias the differential transistor pair to maximize efficiency and stability.

摘要翻译： 差分功率放大器电路包括差分晶体管对，输入变压器和偏置电路。 差分晶体管对中的每个晶体管的基极接触可通过耦合电容耦合到输入变压器。 耦合电容器可以被设计为在输入变压器周围以期望的频率范围谐振，从而将期望的信号传递到差分晶体管对，同时阻挡不期望的信号。 偏置电路可以包括一对射极跟随器晶体管，每个射极跟随器晶体管在发射极处耦合到差分晶体管对中的每个晶体管的基极接触，并且适于偏置差分晶体管对以最大化效率和稳定性。

公开(公告)号：US08587348B2

公开(公告)日：2013-11-19

申请号：US13333729

申请日：2011-12-21

申请人： Anton Pelteshki ,  Hock Khor

发明人： Anton Pelteshki ,  Hock Khor

IPC分类号： H03B1/00

CPC分类号： H03K3/01 ,  H03F3/45179 ,  H03F3/45183 ,  H03F2203/45394 ,  H03F2203/45712 ,  H04L25/0266 ,  H04L25/0276 ,  H04L25/0282

摘要： A driver circuit includes a differential input, a differential output, a bias node, a first T-coil having a first node coupled to the negative output node and a second node coupled to a source of supply voltage, a second T-coil having a first node coupled to the positive output node and a second node coupled to the source of supply voltage, a first transistor having a current path coupled between the center tap of the first T-coil and a first intermediate node, a second transistor having a current path coupled between the center tap of the second T-coil and a second intermediate node, a third transistor having a current path coupled between the first intermediate node and ground, and a fourth transistor having a current path coupled between the second intermediate node and ground.

摘要翻译： 驱动器电路包括差分输入，差分输出，偏置节点，具有耦合到负输出节点的第一节点的第一T形线圈和耦合到电源电压源的第二节点，第二T形线圈具有 耦合到正输出节点的第一节点和耦合到电源电压源的第二节点，具有耦合在第一T形线圈的中心抽头和第一中间节点之间的电流通路的第一晶体管，具有电流 耦合在第二T形线圈的中心抽头和第二中间节点之间的路径，具有耦合在第一中间节点和地之间的电流路径的第三晶体管，以及连接在第二中间节点和地之间的电流路径的第四晶体管 。

公开(公告)号：US08538347B1

公开(公告)日：2013-09-17

申请号：US13448971

申请日：2012-04-17

申请人： Ahmad Mirzaei ,  Hooman Darabi

发明人： Ahmad Mirzaei ,  Hooman Darabi

IPC分类号： H04B1/02

CPC分类号： H03G3/3042 ,  H03F1/02 ,  H03F3/193 ,  H03F3/24 ,  H03F3/45179 ,  H03F3/72 ,  H03F2200/111 ,  H03F2203/45384 ,  H03F2203/45394 ,  H03F2203/45731 ,  H03F2203/7209 ,  H04B1/0057 ,  H04B1/006 ,  H04B1/02 ,  H04B1/0458 ,  H04B2001/045

摘要： A transmitter includes a power amplifier driver connected with a first transformer and a second transformer. The first transformer is configured for a high-band mode and the second transformer is configured for a low-band mode. The power amplifier driver drives both the first transformer and the second transformer.

摘要翻译： 发射机包括与第一变压器和第二变压器连接的功率放大器驱动器。 第一变压器配置为高频带模式，第二变压器配置为低频带模式。 功率放大器驱动器驱动第一变压器和第二变压器。

公开(公告)号：US20130147556A1

公开(公告)日：2013-06-13

申请号：US13316737

申请日：2011-12-12

申请人： Xin Liu ,  Arvind Bomdica

发明人： Xin Liu ,  Arvind Bomdica

IPC分类号： H03F3/45

CPC分类号： H03F3/45179 ,  H03F3/45632 ,  H03F3/505 ,  H03F2200/78 ,  H03F2203/45394 ,  H03F2203/45418 ,  H03F2203/45478 ,  H03F2203/45562 ,  H03F2203/45648

摘要： A circuit for detecting out-of-band signals is disclosed. In one embodiment, the circuit includes a first differential circuit configured to level shift and positively rectify a differential input signal to produce a first output component of a differential output signal. The first differential circuit is further configured to generate and provide a common mode voltage of the differential input signal as a second component of the differential output signal. The circuit further includes a second differential circuit configured to level shift and output first and second fixed voltages based on an input reference voltage and a ground voltage. The circuit is configured to provide the differential output signal and the first and second fixed voltages to an indicator circuit configured to assert an indication responsive to detecting that a differential voltage of the differential output signal is greater than a differential voltage of the first and second fixed voltages.

摘要翻译： 公开了一种用于检测带外信号的电路。 在一个实施例中，电路包括第一差分电路，其被配置为对差分输入信号进行电平移位和正整流以产生差分输出信号的第一输出分量。 第一差分电路还被配置为产生并提供差分输入信号的共模电压作为差分输出信号的第二分量。 该电路还包括第二差分电路，其被配置为基于输入参考电压和接地电压来电平移位和输出第一和第二固定电压。 电路被配置为将差分输出信号和第一和第二固定电压提供给指示器电路，该指示器电路被配置为响应于检测到差分输出信号的差分电压大于第一和第二固定的差分电压而断言指示 电压。

公开(公告)号：US20130093516A1

公开(公告)日：2013-04-18

申请号：US13692309

申请日：2012-12-03

申请人： Susanne Paul ,  Marius Goldenberg

发明人： Susanne Paul ,  Marius Goldenberg

IPC分类号： H03F3/45 ,  H03F3/21

CPC分类号： H03F3/45179 ,  H03F1/086 ,  H03F1/565 ,  H03F3/21 ,  H03F3/45237 ,  H03F3/505 ,  H03F2200/411 ,  H03F2200/492 ,  H03F2200/495 ,  H03F2200/69 ,  H03F2203/45394 ,  H03F2203/45612 ,  H03F2203/5042

摘要： A radio frequency (RF) power amplifier includes a low impedance pre-driver driving the input of a common-source output amplifier stage. The preamplifier includes a first transistor that has a first terminal coupled to a preamplifier RF input node, a second terminal coupled to a preamplifier RF output node, and a third terminal coupled to a supply voltage node. A first inductor is coupled between the RF output node and a bias voltage node. A voltage difference between respective first and second voltages on the RF input node and the RF output node that are substantially in phase, determines current through the first transistor.

摘要翻译： 射频（RF）功率放大器包括驱动共源输出放大器级的输入的低阻抗预驱动器。 前置放大器包括第一晶体管，其具有耦合到前置放大器RF输入节点的第一端子，耦合到前置放大器RF输出节点的第二端子和耦合到电源电压节点的第三端子。 第一电感器耦合在RF输出节点和偏置电压节点之间。 基本上同相的RF输入节点和RF输出节点上的相应的第一和第二电压之间的电压差确定通过第一晶体管的电流。

公开(公告)号：US08384480B2

公开(公告)日：2013-02-26

申请号：US13244467

申请日：2011-09-24

申请人： Michimasa Yamaguchi ,  Kenichi Kawakami

发明人： Michimasa Yamaguchi ,  Kenichi Kawakami

IPC分类号： H03F3/45

CPC分类号： H03F3/45179 ,  H03F2203/45318 ,  H03F2203/45394 ,  H03F2203/45396

摘要： A differential amplifier includes first and second current paths, each connected between first and second power supplies (PS) and respectively outputting first and second differential output signals. The first current path includes: first transistor, selectively interconnected between the first PS and a first output terminal, its gate receiving one differential input signal; second transistor, connected between the second PS and the first output terminal, its gate receiving the other differential input signal; and first switch circuit. The second current path includes: third transistor, selectively interconnected between the second PS and a second output terminal, its gate receiving one differential input signal; fourth transistor, connected between the first PS and the second output terminal, its gate receiving the other differential input signal; and second switch circuit. One of the first and second switch circuits is connected to the first PS and the other is connected to the second PS.

摘要翻译： 差分放大器包括第一和第二电流路径，每个电流路径连接在第一和第二电源（PS）之间，并分别输出第一和第二差分输出信号。 第一电流路径包括：第一晶体管，选择性地互连在第一PS和第一输出端之间，其栅极接收一个差分输入信号; 第二晶体管，连接在第二PS和第一输出端之间，其栅极接收另一个差分输入信号; 和第一开关电路。 第二电流路径包括：第三晶体管，选择性地互连在第二PS和第二输出端之间，其栅极接收一个差分输入信号; 第四晶体管，连接在第一PS和第二输出端之间，其栅极接收另一个差分输入信号; 和第二开关电路。 第一和第二开关电路中的一个连接到第一PS，另一个连接到第二PS。