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。