公开(公告)号：US09991875B2

公开(公告)日：2018-06-05

申请号：US15352402

申请日：2016-11-15

Applicant: QUALCOMM Incorporated

Inventor： Timothy Donald Gathman ,  Ojas Choksi ,  Aleksandar Miodrag Tasic ,  Sasha Vujcic ,  Chirag Dipak Patel ,  Wu-Hsin Chen ,  Klaas Van Zalinge

IPC: H03F3/19 ,  H04W88/08 ,  H03H11/04 ,  H04L5/00

CPC classification number: H03H11/0427 ,  H03F3/19 ,  H03F2200/294 ,  H03F2200/451 ,  H03H11/126 ,  H03H2011/0483 ,  H03H2011/0488 ,  H04B1/0053 ,  H04B1/1036 ,  H04L5/0041 ,  H04W88/08

Abstract: A reconfigurable filter circuit has a first path including a transimpedance amplifier (TIA). The transimpedance amplifier has an input that receives an input current and an output that outputs a voltage. The reconfigurable filter circuit also includes a switchable feedback path. The switchable feedback path includes a first low-pass filter coupled to an output of the TIA. The switchable feedback path also includes a first switch to couple the feedback path to provide a feedback current to the first path resulting in a bandpass response in the output voltage when the switch is closed and a low-pass response in the output voltage when the switch is open.

公开(公告)号：US10033337B2

公开(公告)日：2018-07-24

申请号：US15287674

申请日：2016-10-06

Applicant: QUALCOMM Incorporated

Inventor： Chirag Dipak Patel ,  Sasha Vujcic ,  Aleksandar Miodrag Tasic ,  Timothy Gathman ,  Wu-Hsin Chen ,  Klaas Van Zalinge

IPC: H03F3/68 ,  H03F3/19 ,  H03H7/06 ,  H03H11/04 ,  H04W88/02

Abstract: A multi-stage low-noise amplifier (LNA) device with a band pass response includes a first LNA in series with a second LNA. The device further includes multiple outputs coupled to the second LNA. Each of the outputs is capable of being active at the same time. The device further includes a high pass filter coupled between the first LNA and the second LNA.