公开(公告)号：US20150303878A1

公开(公告)日：2015-10-22

申请号：US14712743

申请日：2015-05-14

Applicant: BROADCOM CORPORATION

Inventor： Tirdad SOWLATI ,  Ehsan ADABI ,  Sayedfarid SHIRINFAR ,  Ahmadreza ROFOUGARAN

IPC: H03F1/02 ,  H03F3/21 ,  H03F3/193

CPC classification number: H03F1/0205 ,  H03F1/0272 ,  H03F3/193 ,  H03F3/195 ,  H03F3/211 ,  H03F3/24 ,  H03F2200/105 ,  H03F2200/405 ,  H03F2200/451 ,  H03F2200/78 ,  H03F2203/21142 ,  H03G3/20

Abstract: An apparatus includes a cascode amplifier. The cascode amplifier includes a first transistor and a second transistor. The cascode amplifier is configured to receive a first bias voltage, a second bias voltage, and a signal. The cascode amplifier is also configured to amplify the signal based at least on the first bias voltage and the second bias voltage. The apparatus also includes a first feedback module and a second feedback module. The first feedback module is configured to adjust the first bias voltage based at least on the amplified signal. The second feedback module is configured to adjust the second bias voltage based at least on a voltage distribution across the first transistor and the second transistor. A system and method for maintaining cascode amplifier performance are also provided.

Abstract translation: 一种装置包括共源共栅放大器。 共源共栅放大器包括第一晶体管和第二晶体管。 共射共栅放大器被配置为接收第一偏置电压，第二偏置电压和信号。 级联放大器还被配置为至少基于第一偏置电压和第二偏置电压来放大信号。 该装置还包括第一反馈模块和第二反馈模块。 第一反馈模块被配置为至少基于放大的信号来调整第一偏置电压。 第二反馈模块被配置为至少基于跨越第一晶体管和第二晶体管的电压分布来调整第二偏置电压。 还提供了用于维持共源共栅放大器性能的系统和方法。

公开(公告)号：US20150248964A1

公开(公告)日：2015-09-03

申请号：US14699944

申请日：2015-04-29

Applicant: BROADCOM CORPORATION

Inventor： Sayedfarid SHIRINFAR ,  Ehsan ADABI FIROUZJAEI ,  Tirdad SOWLATI ,  Ahmadreza ROFOUGARAN

IPC: H01F27/28 ,  H03F3/45 ,  H01F41/02 ,  H03F3/19

CPC classification number: H01F27/2823 ,  H01F27/28 ,  H01F41/02 ,  H01F41/10 ,  H03F3/19 ,  H03F3/195 ,  H03F3/245 ,  H03F3/45076 ,  H03F3/45179 ,  H03F3/68 ,  H03F2200/405 ,  H03F2200/411 ,  H03F2200/451 ,  H03F2200/534 ,  H03F2200/537 ,  H03F2200/541 ,  H03F2203/45172 ,  H03F2203/45228 ,  H03F2203/45394 ,  Y10T29/4902

Abstract: A transformer includes multiple differential ports and first and second transformer windings. The first transformer winding includes a first transformer half-winding coupled to a first differential port of the differential ports. The first transformer winding also includes a second transformer half-winding coupled to a second differential port of the differential ports. An amplifier system that has a transformer is also provided. The amplifier system includes a first and a second stage amplifier. The first stage amplifier includes a first and a second amplifier. The second stage amplifier includes a third and a fourth amplifier. The transformer is coupled between the first stage amplifier and the second stage amplifier, where the transformer has a primary loop and a secondary loop. The primary loop of the transformer may be configured to receive differential signals of the first amplifier. A method for fabricating a transformer is also provided.

Abstract translation: 变压器包括多个差分端口和第一和第二变压器绕组。 第一变压器绕组包括耦合到差分端口的第一差分端口的第一变压器半绕组。 第一变压器绕组还包括耦合到差分端口的第二差分端口的第二变压器半绕组。 还提供了具有变压器的放大器系统。 放大器系统包括第一和第二级放大器。 第一级放大器包括第一和第二放大器。 第二级放大器包括第三和第四放大器。 变压器耦合在第一级放大器和第二级放大器之间，其中变压器具有主回路和次级回路。 变压器的主回路可以被配置为接收第一放大器的差分信号。 还提供了一种用于制造变压器的方法。

公开(公告)号：US20140306755A1

公开(公告)日：2014-10-16

申请号：US13895254

申请日：2013-05-15

Applicant: Broadcom Corporation

Inventor： Sayedfarid SHIRINFAR ,  Ehsan ADABI FIROUZJAEI ,  Tirdad SOWLATI ,  Ahmadreza ROFOUGARAN

IPC: H01F27/28 ,  H01F41/10 ,  H03F3/26

CPC classification number: H01F27/2823 ,  H01F27/28 ,  H01F41/02 ,  H01F41/10 ,  H03F3/19 ,  H03F3/195 ,  H03F3/245 ,  H03F3/45076 ,  H03F3/45179 ,  H03F3/68 ,  H03F2200/405 ,  H03F2200/411 ,  H03F2200/451 ,  H03F2200/534 ,  H03F2200/537 ,  H03F2200/541 ,  H03F2203/45172 ,  H03F2203/45228 ,  H03F2203/45394 ,  Y10T29/4902

Abstract: A transformer has first and second transformer windings including multiple differential ports. Each of the first and second transformer windings include a first transformer half-winding coupled to a first differential port of the differential ports. Each of the first and second transformer windings also include a second transformer half-winding coupled to a second differential port of the differential ports. Each of the first and second transformer windings is divided symmetrically at a common node to form the respective first and second transformer half-windings. The first transformer half-winding is configured to form one half of an inductance in each of the first and second transformer windings. The second transformer half-winding is configured to form another half of the inductance in each of the first and second transformer windings. The common node of the first transformer winding is configured to receive a supply voltage.

Abstract translation: 变压器具有包括多个差分端口的第一和第二变压器绕组。 第一和第二变压器绕组中的每一个包括耦合到差分端口的第一差分端口的第一变压器半绕组。 第一和第二变压器绕组中的每一个还包括耦合到差分端口的第二差分端口的第二变压器半绕组。 第一和第二变压器绕组中的每一个在公共节点处对称分开以形成相应的第一和第二变压器半绕组。 第一变压器半绕组被配置为在第一和第二变压器绕组中的每一个中形成电感的一半。 第二变压器半绕组构造成在第一和第二变压器绕组中的每一个中形成电感的另一半。 第一变压器绕组的公共节点被配置为接收电源电压。