公开(公告)号：US20240283473A1

公开(公告)日：2024-08-22

申请号：US18521108

申请日：2023-11-28

Applicant: QUALCOMM Incorporated

Inventor： Ibrahim Ramez CHAMAS ,  Hayg-Taniel DABAG ,  Asad Ali NAWAZ ,  Huan WANG ,  Waqas AHMAD ,  Bhushan Shanti ASURI

IPC: H04B1/04 ,  H03F3/24 ,  H04B1/30

CPC classification number: H04B1/0475 ,  H03F3/24 ,  H04B1/30

Abstract: Certain aspects of the present disclosure generally relate to electronic circuits, and more particularly, to wireless transmitters. One example apparatus generally includes: an in-phase direct-current (DC) level shifter; a quadrature DC level shifter; an in-phase voltage-to-current (V2I) converter having an input coupled to an output of the in-phase DC level shifter; a quadrature V2I converter having an input coupled to an output of the quadrature V2I converter; a bias control circuit having inputs coupled to the in-phase V2I converter and the quadrature V2I converter, an output of the bias control circuit being coupled to at least one of the in-phase DC level shifter or the quadrature DC level shifter; an in-phase mixer having an input coupled to an output of the in-phase V2I converter; and a quadrature mixer having an input coupled to an output of the quadrature V2I converter.

公开(公告)号：US20240275378A1

公开(公告)日：2024-08-15

申请号：US18494889

申请日：2023-10-26

Applicant: QUALCOMM INCORPORATED

Inventor： Hayg-Taniel DABAG ,  Ibrahim Ramez CHAMAS ,  Asad Ali NAWAZ ,  Waqas AHMAD

IPC: H03K17/56

CPC classification number: H03K17/56

Abstract: A head switch architecture for a stacked transistor structure including a first head switch located in an active path, the first head switch configured to provide a supply voltage to a first cascode path, and a second head switch located in an inactive path, the second head switch configured to provide a reduced supply voltage to a second cascode path.