公开(公告)号：US20220021365A1

公开(公告)日：2022-01-20

申请号：US17367667

申请日：2021-07-06

Applicant: QUALCOMM INCORPORATED

Inventor： Marco VIGILANTE ,  Chinmaya MISHRA

IPC: H03H7/06 ,  H03H7/38 ,  H01Q1/50

Abstract: A filter circuit includes a matching network having resistive and capacitive elements, and a transformer in the matching network. The transformer includes a primary side and a secondary side, and has at least one interwinding capacitance coupled from an input on the primary side to a non-inverting output on the secondary side.

公开(公告)号：US20240275348A1

公开(公告)日：2024-08-15

申请号：US18110295

申请日：2023-02-15

Applicant: QUALCOMM Incorporated

Inventor： Marco VIGILANTE ,  Yunliang ZHU

IPC: H03F3/72 ,  H04B1/04

CPC classification number: H03F3/72 ,  H04B1/04 ,  H04B2001/0408

Abstract: A two-stage circuit includes a differential-to-single-ended first stage with a differential pair of transistors. The first stage includes a current mirror including a diode-connected transistor having an RC circuit coupled to a drain of the diode-connected transistor. The current mirror is configured to mirror a power supply noise current conducted by the RC circuit through a first stage output terminal to a gate of an output transistor in a second stage of the two-stage circuit.

公开(公告)号：US20220200557A1

公开(公告)日：2022-06-23

申请号：US17127242

申请日：2020-12-18

Applicant: QUALCOMM INCORPORATED

Inventor： Marco VIGILANTE ,  Chinmaya MISHRA

IPC: H03G3/30 ,  H03H11/30 ,  H03F3/193 ,  H03F3/21

Abstract: An amplifier circuit for a millimeter wave (mmW) communication system includes an amplifier coupled to a matching network, and a variable gain control circuit in the matching network, the variable gain control circuit having an adjustable gain control resistance, the adjustable gain control resistance having adjustable segments and a center node therebetween, the center node coupled to an alternating current (AC) ground.

公开(公告)号：US20210105047A1

公开(公告)日：2021-04-08

申请号：US16595987

申请日：2019-10-08

Applicant: QUALCOMM Incorporated

Inventor： Chinmaya MISHRA ,  Marco VIGILANTE ,  Chirag Dipak PATEL ,  Bhushan Shanti ASURI ,  Rajagopalan RANGARAJAN

IPC: H04B7/0452 ,  H04B1/44 ,  H03F3/217 ,  H03F3/45

Abstract: A transformer-based antenna switching network includes a transformer having a secondary winding that extends between a first terminal and a second terminal. The first terminal couples to ground through a first switch and connects to a first antenna. The second terminal couples to ground through a second switch and connects to a second antenna.

公开(公告)号：US20200321913A1

公开(公告)日：2020-10-08

申请号：US16375765

申请日：2019-04-04

Applicant: QUALCOMM Incorporated

Inventor： Wu-Hsin CHEN ,  Rui XU ,  Marco VIGILANTE ,  Li LIU ,  Xiaotie WU

IPC: H03B5/12

Abstract: In certain aspects, an apparatus includes a transformer including an input inductor and an output inductor, wherein the input inductor is magnetically coupled to the output inductor. The apparatus also includes a transconductance driver configured to drive the input inductor based on an input signal. The apparatus further includes a feedback circuit configured to detect an output voltage swing at the output inductor, generate a regulated voltage at the input inductor, and control the regulated voltage based on the detected output voltage swing.