公开(公告)号：US20190028087A1

公开(公告)日：2019-01-24

申请号：US15867206

申请日：2018-01-10

Applicant: QUALCOMM Incorporated

Inventor： Wei ZHUO ,  Timothy Donald GATHMAN ,  Wenbang XU ,  Li-chung CHANG ,  Rui LI ,  Rahul KARMAKER

IPC: H03H11/02

Abstract: A filter circuit may include a first path having a first complex baseband filter. The circuit may further include a second path having a second complex baseband filter. The circuit may further include a combiner coupled to an output of the first complex baseband filter and an output of the second complex baseband filter.

公开(公告)号：US20220263479A1

公开(公告)日：2022-08-18

申请号：US17176543

申请日：2021-02-16

Applicant: QUALCOMM Incorporated

Inventor： Joung Won PARK ,  Wei ZHUO ,  Li-chung CHANG

IPC: H03F3/45 ,  H03F3/19 ,  H03F1/26 ,  H03F1/32

Abstract: Certain aspects of the present disclosure provide methods and apparatus for amplifying an input signal. One example apparatus is a differential amplifier that includes a positive input node, a negative input node, a positive output node, a negative output node, a positive input transistor having a gate coupled to the positive input node and having a drain coupled to the negative output node, a negative input transistor having a gate coupled to the negative input node and having a drain coupled to the positive output node, a first common-gate amplifier having an output coupled to the negative output node, a second common-gate amplifier having an output coupled to the positive output node, a first capacitive element coupled between the negative input node and an input of the first common-gate amplifier, and a second capacitive element coupled between the positive input node and an input of the second common-gate amplifier.