公开(公告)号：US09160309B2

公开(公告)日：2015-10-13

申请号：US14103645

申请日：2013-12-11

Applicant: QUALCOMM Incorporated

Inventor： Gireesh Rajendran ,  Rakesh Kumar ,  Vinod Venugopal Panikkath ,  Ayush Mittal ,  Alok Joshi

IPC: H03B1/04 ,  H03H11/12 ,  G05F1/445 ,  H02M11/00 ,  H03H11/04

CPC classification number: H03H11/1213 ,  G05F1/445 ,  H02M11/00 ,  H03H11/045 ,  H03H2011/0483

Abstract: An area efficient baseband filter is disclosed. In an exemplary embodiment, an apparatus includes a current to voltage (I-V) filter configured to receive an input current signal at an input port and generate a filtered output voltage signal at an output port based on a feedback transconductance. The input current signal comprises an input DC current in addition to a signal current. The apparatus also includes a feedback circuit connected between the output port and the input port, the feedback circuit having at least one transistor configured to couple the input DC current to a signal ground and to provide the feedback transconductance for the I-V filter.

Abstract translation: 公开了一种区域有效的基带滤波器。 在一个示例性实施例中，一种装置包括电流 - 电压（I-V）滤波器，其被配置为在输入端口处接收输入电流信号，并且基于反馈跨导在输出端口处生成经滤波的输出电压信号。 除了信号电流之外，输入电流信号包括输入DC电流。 该装置还包括连接在输出端口和输入端口之间的反馈电路，反馈电路具有至少一个晶体管，其被配置为将输入的DC电流耦合到信号地，并为I-V滤波器提供反馈跨导。

公开(公告)号：US20150162895A1

公开(公告)日：2015-06-11

申请号：US14103645

申请日：2013-12-11

Applicant: QUALCOMM Incorporated

Inventor： Gireesh Rajendran ,  Rakesh Kumar ,  Vinod Venugopal Panikkath ,  Ayush Mittal ,  Alok Joshi

IPC: H03H11/12 ,  H02M11/00 ,  G05F1/445

CPC classification number: H03H11/1213 ,  G05F1/445 ,  H02M11/00 ,  H03H11/045 ,  H03H2011/0483

Abstract: An area efficient baseband filter is disclosed. In an exemplary embodiment, an apparatus includes a current to voltage (I-V) filter configured to receive an input current signal at an input port and generate a filtered output voltage signal at an output port based on a feedback transconductance. The input current signal comprises an input DC current in addition to a signal current. The apparatus also includes a feedback circuit connected between the output port and the input port, the feedback circuit having at least one transistor configured to couple the input DC current to a signal ground and to provide the feedback transconductance for the I-V filter.

Abstract translation: 公开了一种区域有效的基带滤波器。 在一个示例性实施例中，一种装置包括电流 - 电压（I-V）滤波器，其被配置为在输入端口处接收输入电流信号，并且基于反馈跨导在输出端口处生成经滤波的输出电压信号。 除了信号电流之外，输入电流信号包括输入DC电流。 该装置还包括连接在输出端口和输入端口之间的反馈电路，反馈电路具有至少一个晶体管，其被配置为将输入的DC电流耦合到信号地，并为I-V滤波器提供反馈跨导。