公开(公告)号：US20190158048A1

公开(公告)日：2019-05-23

申请号：US16200405

申请日：2018-11-26

Applicant: Qualcomm Incorporated

Inventor： Alaaeldien Mohamed Abdelrazek Medra ,  David Zixiang Yang ,  Kevin Hsi Huai Wang ,  Chen Zhai ,  Francesco Gatta

IPC: H03F9/02 ,  H03F1/56 ,  H03F3/195

CPC classification number: H03F9/02 ,  H03F1/223 ,  H03F1/565 ,  H03F3/195 ,  H03F2200/294

Abstract: An integrated circuit is disclosed for gain-dependent impedance matching and linearity. The integrated circuit includes at least two amplifier branches, an input inductor, and at least two degeneration inductors. Each amplifier branch includes a node, an input transistor, and a cascode stage connected between a drain of the input transistor and the node. Respective nodes of the at least two amplifier branches are connected together and respective gates of the input transistors of the at least two amplifier branches are connected together. The input inductor is connected to the respective gates, and the at least two degeneration inductors are connected between respective sources of the input transistors of the at least two amplifier branches and a ground. The at least two degeneration inductors are configured to establish a magnetic coupling with the input inductor and establish another magnetic coupling between each other.

公开(公告)号：US10700655B2

公开(公告)日：2020-06-30

申请号：US16200405

申请日：2018-11-26

Applicant: Qualcomm Incorporated

Inventor： Alaaeldien Mohamed Abdelrazek Medra ,  David Zixiang Yang ,  Kevin Hsi Huai Wang ,  Chen Zhai ,  Francesco Gatta

IPC: H03F3/04 ,  H03F9/02 ,  H03F3/195 ,  H03F1/56 ,  H03F1/22

Abstract: An integrated circuit is disclosed for gain-dependent impedance matching and linearity. The integrated circuit includes at least two amplifier branches, an input inductor, and at least two degeneration inductors. Each amplifier branch includes a node, an input transistor, and a cascode stage connected between a drain of the input transistor and the node. Respective nodes of the at least two amplifier branches are connected together and respective gates of the input transistors of the at least two amplifier branches are connected together. The input inductor is connected to the respective gates, and the at least two degeneration inductors are connected between respective sources of the input transistors of the at least two amplifier branches and a ground. The at least two degeneration inductors are configured to establish a magnetic coupling with the input inductor and establish another magnetic coupling between each other.

公开(公告)号：US11742839B2

公开(公告)日：2023-08-29

申请号：US17403863

申请日：2021-08-16

Applicant: QUALCOMM Incorporated

Inventor： Chen Zhai ,  Yung-Chung Lo

IPC: H04B1/40 ,  H03F3/24 ,  H03B19/00 ,  H03B19/14 ,  H03B27/00 ,  G06F7/14 ,  H03K3/03 ,  H03K5/12 ,  H03K5/00

CPC classification number: H03K5/00006 ,  H03F3/245 ,  H04B1/40 ,  H03F2200/165 ,  H03F2200/294 ,  H03F2200/451

Abstract: Aspects of the disclosure relate to a local oscillator frequency divider for a receiver or transmitter. In this regard a frequency divider has a first frequency input coupled to a first oscillator frequency output, a second frequency input coupled to a complementary second oscillator frequency output, a first in-phase/quadrature (I/Q) divided frequency output, and a complementary second I/Q divided frequency output. The frequency divider further has a first alternating current (AC) coupling capacitor between the first frequency input and the first oscillator frequency output and a second AC coupling capacitor between the second frequency input and the second oscillator frequency output.