公开(公告)号：US12113499B2

公开(公告)日：2024-10-08

申请号：US18068837

申请日：2022-12-20

Applicant: QUALCOMM Incorporated

Inventor： Peter Gazzerro ,  Nitz Saputra ,  Ashok Swaminathan ,  Osama Elhadidy ,  Bo Yang

IPC: H03H11/04 ,  H03M1/06 ,  H03M1/66 ,  H04B1/04

CPC classification number: H03H11/0461 ,  H03M1/0626 ,  H03M1/66 ,  H04B1/04

Abstract: Methods and apparatus for filtering a signal using a current-mode filter circuit implementing source degeneration. An example filter circuit generally includes an input node; an output node; a power supply node; a first transistor comprising a drain coupled to the input node; a second transistor comprising a drain coupled to the output node and comprising a gate coupled to a gate of the first transistor; a capacitive element coupled between the drain of the first transistor and the power supply node; a first resistive element coupled between the drain and the gate of the first transistor; a first source degeneration element coupled between a source of the first transistor and the power supply node; and a second source degeneration element coupled between a source of the second transistor and the power supply node.

公开(公告)号：US10305428B1

公开(公告)日：2019-05-28

申请号：US16005458

申请日：2018-06-11

Applicant: QUALCOMM Incorporated

Inventor： Bo Yang

IPC: G06G7/12 ,  H04B1/10 ,  H03D7/14 ,  H04B1/38

CPC classification number: H03D7/1466 ,  H03D7/1441 ,  H03D7/1458 ,  H03D7/165 ,  H03D2200/006 ,  H03D2200/0074 ,  H03D2200/0088 ,  H04B1/38

Abstract: A passive mixer may include an output coupled to a next stage circuit. The output may be coupled to baseband inputs via first switches. The passive mixer may further include a tunable capacitor bank. The tunable capacitor bank may be coupled via second switches to the baseband inputs.